1. An air tightness detector with an alarm prompt function comprises a detection cylinder (1), an equipment seat (2), an air pump (3), a sealing cover (4), a sliding baffle (10) and an alarm (27), and is characterized in that;

the detection barrel (1) is fixedly connected to the upper surface of the equipment base (2), the air pump (3) is fixedly connected to one side of the upper surface of the equipment base (2), the sealing cover (4) is movably clamped at the top end of the detection barrel (1), the sliding baffle (10) is connected to the inside of the detection barrel (1) in a sliding mode, and the alarm (27) is arranged at the top of the sealing cover (4);

the upper surface of the equipment base (2) is fixedly connected with an air guide tube (6), one end of the air guide tube (6) is fixedly connected with an air pump (3), the other end of the air guide tube (6) is fixedly connected with a detection barrel (1), the top end of a sealing cover (4) is fixedly connected with a fixed tube (21), the bottom end of the fixed tube (21) extends into the detection barrel (1), the top end of the fixed tube (21) is fixedly connected with a fixed block (26), a storage battery is arranged in the fixed block (26), the bottom of the fixed block (26) is fixedly connected with an electric connection insertion tube (32), the bottom end of the electric connection insertion tube (32) extends into the fixed tube (21), a piston (28) is slidably connected in the fixed tube (21), a U-shaped electric connection rod (33) is fixedly connected to the upper surface of the piston (28), and the U-shaped electric connection rod (33) is movably inserted in the bottom end of the electric connection insertion tube (, the alarm (27) is electrically communicated with the storage battery through a U-shaped electric connecting rod (33) and an electric connecting insertion tube (32).

2. The airtightness detector with the alarm prompting function according to claim 1, characterized in that: circular recess (11) have been seted up to the interior bottom of a detection section of thick bamboo (1), the surface of a detection section of thick bamboo (1) and the top fixedly connected with first communicating pipe (7) that is located circular recess (11), the side fixedly connected with second communicating pipe (8) of circular recess (11), first communicating pipe (7) and second communicating pipe (8) respectively with air duct (6) fixed connection, the equal fixedly connected with control flap (9) of surface of first communicating pipe (7), second communicating pipe (8) and air duct (6).

3. The airtightness detector with the alarm prompting function according to claim 1, characterized in that: the lower surface of the sliding baffle (10) is fixedly connected with a rubber sealing plate (12), the upper surface of the sliding baffle (10) is provided with a cross groove (13), the inside of the cross groove (13) is slidably connected with a clamping stop lever (15), and a stop strip (17) is fixedly connected to the bottom end of one side, opposite to the clamping stop lever (15).

4. The airtightness detector with the alarm prompting function according to claim 3, characterized in that: the inner portion of the cross groove (13) is fixedly connected with a cross rod (14), the bottom end of the clamping stop rod (15) is fixedly connected with a sliding block (18), the sliding block (18) is movably sleeved on the outer surface of the cross rod (14), and the outer surfaces of four end portions of the cross rod (14) are movably sleeved with second springs (16).

5. The airtightness detector with the alarm prompting function according to claim 1, characterized in that: the lower surface middle part fixedly connected with toper stopper (23) of sealed lid (4), toper stopper (23) activity is pegged graft inside the top of detecting a section of thick bamboo (1), the both sides of sealed lid (4) are all rotated and are connected with connecting rod (24), the outer fixed surface of detecting a section of thick bamboo (1) is connected with fixed subassembly (5), connecting rod (24) slip joint is in the inside of fixed subassembly (5).

6. The airtightness detector with the alarm prompting function according to claim 5, characterized in that: the fixing assembly (5) comprises a fixing seat (501), a clamping rod (502), a pulling handle (503), a blocking ring (504) and a first spring (505), the clamping rod (502) is movably inserted into the side face of the fixing seat (501), the pulling handle (503) is fixedly connected to the end portion of the clamping rod (502), the blocking ring (504) is fixedly sleeved on the outer surface of the clamping rod (502), and the first spring (505) is movably sleeved on the outer surface of the clamping rod (502) and close to one end of the pulling handle (503).

7. The airtightness detector with the alarm prompting function according to claim 6, characterized in that: the utility model discloses a sealing structure, including fixing base (501), connecting rod (24), draw-in groove (19), the bottom of connecting rod (24) is rotated and is connected with fixture block (25), the both sides fixedly connected with connecting block (22) of sealed lid (4), connecting rod (24) are rotated and are connected in the inside of connecting block (22), the internal thread groove has been seted up at the top of fixing base (501), the external thread groove with internal thread groove looks adaptation is seted up to the surface of connecting rod (24), draw-in groove (19) have been seted up to the bottom in internal thread groove, the bottom of connecting rod (24) is rotated and is connected with fixture block (25), fixture block (25) activity joint is in the inside of draw-in groove (19).

8. The airtightness detector with the alarm prompting function according to claim 7, characterized in that: spacing groove (20) have been seted up to the inside of fixing base (501), keep off the equal activity joint in the inside of spacing groove (20) of ring (504) and first spring (505), kelly (502) run through spacing groove (20) and extend to the inside of draw-in groove (19), kelly (502) and fixture block (25) activity joint.

9. The airtightness detector with the alarm prompting function according to claim 1, characterized in that: the inner top of the fixed pipe (21) is fixedly connected with a fixed sleeve (30), a third spring (31) is movably clamped in the fixed sleeve (30), the upper surface of the piston (28) is fixedly connected with a sliding insertion rod (29), and the top end of the sliding insertion rod (29) is movably inserted in the bottom end of the fixed sleeve (30).

Background

The air tightness detector is a device for detecting the air tightness of an instrument or a container, the traditional method for detecting the air tightness is a method of soaking water or oil and visually observing bubbles, the device is simple, the result is visual, but the detection precision and efficiency are low, the influence of human factors is large, automatic quantitative leak detection cannot be realized, and meanwhile, the workpiece is wet and rusty.

Through retrieval, the prior patent with publication number CN212363580U discloses an air tightness detector, which relates to the technical field of air tightness detection of bagged food and comprises a barrel body and a barrel cover, wherein a stabilizing column is fixed on the lower side of the barrel cover, a pressing plate is horizontally fixed at one end of the stabilizing column, which is far away from the barrel cover, and the pressing plate on the cover can press the bagged food floating on the surface into water, so that workers can observe the rising condition of bubbles in the water to detect the air tightness of the bagged food;

however, the device has certain disadvantages in use, the detected object needs to be put into water for detection, if bubbles are attached to the surface of the detected object, the experiment is interfered, the detection result is not convenient to be perceived intuitively, and once the sealing performance of the detected object is defective, water can directly enter the detected object, and simultaneously damages the detected object, and simultaneously, when the device carries out air tightness detection on the object with larger volume, a large amount of water is needed to be consumed for carrying out detection operation, and accurate data of the airtightness performance of the detected object cannot be obtained, the pressure holding time and the pressure holding amount of the detected object cannot be accurately known, and for some detected objects with heavy mass, the taking and placing are troublesome during detection, so that the air tightness detector with the alarm prompting function needs to be provided to solve the problems.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention discloses an air tightness detector with an alarm prompt function, which aims to solve the problems in the background art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: an air tightness detector with an alarm prompt function comprises a detection cylinder, an equipment seat, an air pump, a sealing cover, a sliding baffle and an alarm;

the detection cylinder is fixedly connected to the upper surface of the equipment seat, the air pump is fixedly connected to one side of the upper surface of the equipment seat, the sealing cover is movably clamped at the top end of the detection cylinder, the sliding baffle is connected inside the detection cylinder in a sliding mode, and the alarm is arranged at the top of the sealing cover;

the last fixed surface of equipment seat is connected with the air duct, the one end and the air pump fixed connection of air duct, the other end and the detection section of thick bamboo fixed connection of air duct, the fixed pipe of top fixedly connected with of sealed lid, the bottom of fixed pipe extends to the inside of detecting a section of thick bamboo, the top fixedly connected with fixed block of fixed pipe, the inside of fixed block is equipped with the battery, the bottom fixedly connected with of fixed block connects the electric pin, the bottom that connects the electric pin extends to the inside of fixed pipe, the inside sliding connection of fixed pipe has the piston, the last fixed surface of piston connects the electric pole in the U-shaped, the U-shaped connects the electric pole activity and pegs graft inside the bottom that connects the electric pin, the alarm connects the electric pole through the U-shaped and connects the electric pin and be.

Preferably, circular recess has been seted up to the interior bottom of detecting a section of thick bamboo, the surface of detecting a section of thick bamboo just is located the first communicating pipe of top fixedly connected with of circular recess, the side fixedly connected with second communicating pipe of circular recess, first communicating pipe and second communicating pipe respectively with air duct fixed connection, the equal fixedly connected with control flap of surface of first communicating pipe, second communicating pipe and air duct.

Preferably, the lower surface of the sliding baffle is fixedly connected with a rubber sealing plate, the upper surface of the sliding baffle is provided with a cross groove, the inside of the cross groove is slidably connected with a clamping stop lever, and the bottom end of one side, opposite to the clamping stop lever, is fixedly connected with a stop strip.

Preferably, the inside of the cross groove is fixedly connected with a cross rod, the bottom end of the clamping stop rod is fixedly connected with a sliding block, the sliding block is movably sleeved on the outer surface of the cross rod, and the outer surfaces of the four end parts of the cross rod are movably sleeved with second springs.

Preferably, the middle part of the lower surface of the sealing cover is fixedly connected with a conical plug, the conical plug is movably inserted into the top end of the detection cylinder, the two sides of the sealing cover are rotatably connected with connecting rods, the outer surface of the detection cylinder is fixedly connected with a fixing component, and the connecting rods are slidably clamped in the fixing component.

Preferably, the fixed subassembly includes fixing base, kelly, pulling handle, fender ring and first spring, the kelly activity is pegged graft in the side of fixing base, pulling handle fixed connection is at the tip of kelly, the fixed cover of fender ring is connected at the surface of kelly, first spring activity cup joints the surface of kelly and is close to the one end of pulling handle.

Preferably, both sides fixedly connected with connecting block of sealed lid, the connecting rod rotates to be connected in the inside of connecting block, the internal thread groove has been seted up at the top of fixing base, the surface of connecting rod set up with the external thread groove of internal thread groove looks adaptation, the draw-in groove has been seted up to the bottom of internal thread groove, the bottom of connecting rod rotates and is connected with the fixture block, fixture block activity joint is in the inside of draw-in groove.

Preferably, a limiting groove is formed in the fixing seat, the baffle ring and the first spring are movably clamped in the limiting groove, the clamping rod penetrates through the limiting groove and extends to the clamping groove, and the clamping rod is movably clamped with the clamping block.

Preferably, the inner top of the fixed pipe is fixedly connected with a fixed sleeve, the inner part of the fixed sleeve is movably clamped with a third spring, the upper surface of the piston is fixedly connected with a sliding inserted bar, and the top end of the sliding inserted bar is movably inserted in the bottom end of the fixed sleeve.

The invention discloses an air tightness detector with an alarm prompt function, which has the following beneficial effects:

1. the air tightness detector with the alarm prompting function is characterized in that an object to be detected is placed inside a detection cylinder, then the air pump inflates the detection cylinder, so that a piston moves upwards, a third spring is compressed, meanwhile, a U-shaped electric connecting rod moves upwards along with the piston, when the U-shaped electric connecting rod is inserted into the electric connection insertion tube, the alarm is in circuit communication with a storage battery through the U-shaped electric connecting rod, an indicator light of the alarm is turned on, then a control valve on the outer surface of the air pump and an air guide tube is closed, the indicator light of the alarm is in a normally-on state, if the object to be detected leaks, the air pressure inside the detection cylinder is high, compressed air can enter the object to be detected, the air pressure inside the detection cylinder is reduced, the piston can slide downwards inside a fixing tube, and the U-shaped electric connecting rod moves downwards from the electric connection insertion tube, at the moment, the indicator light of the alarm is turned off, so that the air tightness of the detected object can be intuitively known.

2. This gas tightness detector with warning prompt facility, after using, open through the control flap with first communicating pipe and second communicating pipe surface, the air at top enters into inside circular recess through first communicating pipe and second communicating pipe emission downwards in the detection section of thick bamboo this moment, then take off sealed lid from the top of detecting the section of thick bamboo, then close the control flap of first communicating pipe surface, then open the control flap of air duct surface, and aerify to circular recess inside through starting the air pump, make sliding baffle take detected object and inside the upwards slip at the detection section of thick bamboo, conveniently will be detected the ejecting detection section of thick bamboo of object, conveniently get and put.

3. This gas tightness detector with warning prompt facility, when sealed lid activity joint to the upper surface of detection cylinder, insert the internal thread inslot portion of fixing base upper surface with two sets of connecting rods, and make the bottom of fixture block enter into the draw-in groove inside, will stimulate the outside pulling of handle this moment, then press down the connecting rod and twist, the external thread groove of connecting rod surface matches threaded connection together with the internal thread groove of fixing base this moment, fixture block lapse to draw-in groove bottom simultaneously, then loosen the pulling handle, the surface at the fixture block is pegged graft in the card pole activity this moment, the toper stopper is hugged closely with the detection cylinder and is pegged graft together this moment, avoid at the in-process of using, along with detection cylinder internal pressure increase, the sealed lid takes place by the condition of flicking out.

4. This gas tightness detector with warning prompt facility, outwards promote along the cross recess through four group's centre gripping pin, the slider slides at the surface of cross rod this moment, make the second spring compressed, place between four group's centre gripping pin this moment again by the detected object, and make the detected object be in the upper surface of blend stop, loosen four group's centre gripping pin this moment, make four group's centre gripping pin remove to the middle part under the effect of second spring, carry out the centre gripping to the detected object, make the whole unsettled state that is in of detected object, avoid being detected object and sliding baffle's upper surface to contact, prevent that the gas leakage point department of detected object from appearing in the condition that the lower surface was sheltered from by sliding baffle, improve the accuracy of detection.

Drawings

FIG. 1 is a front view of the main body of the present invention;

FIG. 2 is a side view of the main body of the present invention;

FIG. 3 is a sectional view showing the internal structure of the detecting cylinder according to the present invention;

FIG. 4 is an exploded view of the outer surface structure of the sliding blind of the present invention;

FIG. 5 is a schematic view of a fixing assembly according to the present invention;

FIG. 6 is a schematic view of the outer surface configuration of the sealing cap of the present invention;

FIG. 7 is a sectional view showing the inner structure of the fixing tube according to the present invention;

fig. 8 is a circuit diagram of the connection between the alarm and the electric connecting rod.

In the figure: 1. a detection cylinder; 2. an equipment base; 3. an air pump; 4. a sealing cover; 5. a fixing assembly; 501. a fixed seat; 502. a clamping rod; 503. pulling the handle; 504. a baffle ring; 505. a first spring; 6. an air duct; 7. a first communication pipe; 8. a second communicating pipe; 9. a control valve; 10. a sliding baffle; 11. a circular groove; 12. a rubber sealing plate; 13. a cross groove; 14. a cross bar; 15. clamping the stop lever; 16. a second spring; 17. blocking strips; 18. a slider; 19. a card slot; 20. a limiting groove; 21. a fixed tube; 22. connecting blocks; 23. a conical plug; 24. a connecting rod; 25. a clamping block; 26. a fixed block; 27. an alarm; 28. a piston; 29. a sliding insertion rod; 30. fixing the sleeve; 31. a third spring; 32. connecting a power plug tube; 33. and the U-shaped electric connecting rod.

Detailed Description

The embodiment of the invention discloses an air tightness detector with an alarm prompt function, which is shown in fig. 1 to 8, and in order to make the purposes, technical schemes and advantages of the embodiment of the invention clearer, the technical schemes in the embodiment of the invention are clearly and completely described below by combining the drawings in the invention and by means of the embodiment.

The first embodiment,

As shown in fig. 1-8, an air tightness detector with alarm prompting function comprises a detection cylinder 1, an equipment seat 2, an air pump 3, a sealing cover 4, a sliding baffle 10 and an alarm 27, wherein the detection cylinder 1 is fixedly connected to the upper surface of the equipment seat 2, the air pump 3 is fixedly connected to one side of the upper surface of the equipment seat 2, the sealing cover 4 is movably clamped at the top end of the detection cylinder 1, the sliding baffle 10 is slidably connected to the inside of the detection cylinder 1, the alarm 27 is arranged at the top of the sealing cover 4, the upper surface of the equipment seat 2 is fixedly connected with an air duct 6, one end of the air duct 6 is fixedly connected with the air pump 3, the other end of the air duct 6 is fixedly connected with the detection cylinder 1, the top end of the sealing cover 4 is fixedly connected with a fixed tube 21, the bottom end of the fixed tube 21 extends to the inside of the detection cylinder 1, the top end of the fixed tube 21 is fixedly connected with a fixed block 26, and a storage battery is arranged inside the fixed block 26, the bottom of the fixed block 26 is fixedly connected with an electric connection insertion tube 32, the bottom end of the electric connection insertion tube 32 extends to the inside of the fixed tube 21, the inside of the fixed tube 21 is connected with a piston 28 in a sliding mode, the upper surface of the piston 28 is fixedly connected with a U-shaped electric connection rod 33, the U-shaped electric connection rod 33 is movably inserted into the bottom end of the electric connection insertion tube 32, the alarm 27 is electrically communicated with a storage battery through the U-shaped electric connection rod 33 and the electric connection insertion tube 32, the inner bottom of the detection cylinder 1 is provided with a circular groove 11, the outer surface of the detection cylinder 1 is fixedly connected with a first communicating tube 7 above the circular groove 11, the side surface of the circular groove 11 is fixedly connected with a second communicating tube 8, the first communicating tube 7 and the second communicating tube 8 are respectively and fixedly connected with an air guide tube 6, the outer surfaces of the first communicating tube 7, the second communicating tube 8 and the air guide tube 6 are respectively and fixedly connected with a control valve 9, and the inner top of the fixed tube 21 is fixedly connected with a fixed sleeve 30, a third spring 31 is movably clamped in the fixed sleeve 30, the upper surface of the piston 28 is fixedly connected with a sliding inserted rod 29, and the top end of the sliding inserted rod 29 is movably inserted in the bottom end of the fixed sleeve 30;

the air tightness detector with the alarm prompt function has the advantages of simple operation, strong practicability and obvious detection effect, three groups of control valves 9 are in a closed state in an initial state, the sliding baffle 10 is positioned in the detection barrel 1, the vertical height of the sliding baffle 10 is positioned below the first communication pipe 7, the piston 28 is positioned in the middle position in the fixed pipe 21 under the action of the third spring 31, and the electric connection insertion pipe 32 and the U-shaped electric connection rod 33 are in a separated state;

when the device is used, firstly, the sealing cover 4 is taken down, then an object to be detected is placed on the upper surface of the sliding baffle plate 10 and is clamped and fixed through the four groups of clamping stop rods 15, so that the lower surface of the object to be detected is abutted against the upper surface of the stop strip 17, then, the sliding baffle plate 10 slides downwards in the detection cylinder 1 under the action of gravity by opening the control valves 9 on the outer surfaces of the first communicating pipe 7 and the second communicating pipe 8, air at the bottom in the detection cylinder 1 is extruded outwards through the second communicating pipe 8 and is discharged towards the top in the detection cylinder 1 through the first communicating pipe 7, finally, the air pressure in the detection cylinder 1 is kept consistent with the outside, at the moment, the upper surface of the sliding baffle plate 10 is contacted with the upper surface of the edge opening of the circular groove 11, at the moment, the sealing cover 4 is closed, and the conical plug 23 is movably clamped in the top end of the detection cylinder 1, at the moment, two groups of connecting rods 24 are inserted into the fixing assembly 5 for fixing, the sealing cover 4 and the detection cylinder 1 are kept movably clamped together, the interior of the detection cylinder 1 is in a sealing state, then the control valve 9 on the outer surface of the second communicating pipe 8 is closed, then the control valve 9 on the outer surface of the air guide pipe 6 is opened, then the air pump 3 is started, at the moment, the air pump 3 fills air into the first communicating pipe 7 through the air guide pipe 6, so that the air enters the interior of the detection cylinder 1, at the moment, the air pressure in the interior of the detection cylinder 1 and on the upper surface of the sliding baffle plate 10 is increased, at the moment, the piston 28 moves upwards under the action of the air pressure, so that the sliding insertion rod 29 moves towards the interior of the fixing sleeve 30, the third spring 31 is compressed, at the same time, the air pressure in the interior of the fixing pipe 21 and above the piston 28 is increased, at the moment, the U-shaped connecting rod 33 moves upwards along with the piston 28, when the U-shaped electric connecting rod 33 is inserted into the electric connecting cannula 32, the alarm 27 is in circuit communication with the storage battery through the U-shaped electric connecting rod 33 at the moment, the indicator light of the alarm 27 is turned on, the control valve 9 on the outer surface of the air pump 3 and the air guide tube 6 is rapidly closed at the moment, the control valve 9 on the outer surface of the first communication tube 7 is closed at the same time, the indicator light of the alarm 27 is in a normally-on state at the moment, the detected object is observed for a period of time, timing is started from the time of closing the air pump 3 through a timing device, if the detected object has an air leakage condition, the air pressure in the detection cylinder 1 is higher at the moment, the compressed air can enter the detected object, so that the air pressure in the detection cylinder 1 is reduced, the piston 28 can slide downwards in the fixing tube 21 at the moment, and the U-shaped electric connecting rod 33 can move downwards from the inside of the electric connecting cannula 32, at the moment, the indicator light of the alarm 27 is turned off, the timing is stopped immediately at the moment, the situation that the detected object leaks air is shown, and meanwhile, the pressure maintaining time of the detected object can be reflected according to the display time of the timer.

Example II,

As shown in fig. 1-8, the air tightness detector with alarm function comprises a detection cylinder 1, an equipment base 2 and an air pump 3, the device comprises a sealing cover 4, a sliding baffle 10 and an alarm 27, wherein a detection barrel 1 is fixedly connected to the upper surface of an equipment seat 2, an air pump 3 is fixedly connected to one side of the upper surface of the equipment seat 2, the sealing cover 4 is movably clamped at the top end of the detection barrel 1, the sliding baffle 10 is slidably connected inside the detection barrel 1, the alarm 27 is arranged at the top of the sealing cover 4, a cross groove 13 is formed in the upper surface of the sliding baffle 10, a clamping stop lever 15 is slidably connected inside the cross groove 13, a stop strip 17 is fixedly connected to the bottom end of one side, opposite to the clamping stop lever 15, of the cross groove 13, a cross rod 14 is fixedly connected inside the cross groove 13, a sliding block 18 is fixedly connected to the bottom end of the clamping stop lever 15, the sliding block 18 is movably sleeved on the outer surface of the cross rod 14, and second springs 16 are movably sleeved on the outer surfaces of four end parts of the cross rod 14;

in the operation process of the first embodiment, when a detection object is placed on the upper surface of the sliding baffle 10, the four groups of clamping stop levers 15 are pushed outwards along the cross groove 13, at this time, the sliding block 18 slides on the outer surface of the cross lever 14, so that the second spring 16 is compressed, at this time, the detection object is placed between the four groups of clamping stop levers 15, and the detection object is placed on the upper surface of the stop strip 17, at this time, the four groups of clamping stop levers 15 are released, so that the four groups of clamping stop levers 15 move towards the middle under the action of the second spring 16, the detection object is clamped, the whole detection object is in a suspended state, the detection object is prevented from contacting with the upper surface of the sliding baffle 10, the air leakage point of the detection object is prevented from being shielded by the sliding baffle 10 on the lower surface, and the detection accuracy is improved.

Example III,

1-8, an air tightness detector with alarm prompt function, comprising a detection cylinder 1, an equipment seat 2, an air pump 3, a sealing cover 4, a sliding baffle 10 and an alarm 27, wherein the detection cylinder 1 is fixedly connected on the upper surface of the equipment seat 2, the air pump 3 is fixedly connected on one side of the upper surface of the equipment seat 2, the sealing cover 4 is movably clamped on the top end of the detection cylinder 1, the sliding baffle 10 is slidably connected inside the detection cylinder 1, the alarm 27 is arranged on the top of the sealing cover 4, a conical plug 23 is fixedly connected in the middle of the lower surface of the sealing cover 4, the conical plug 23 is movably inserted inside the top end of the detection cylinder 1, connecting rods 24 are rotatably connected on both sides of the sealing cover 4, a fixing component 5 is fixedly connected on the outer surface of the detection cylinder 1, the connecting rods 24 are slidably clamped inside the fixing component 5, the fixing component 5 comprises a fixing seat 501, a clamping rod 502 and a pulling handle 503, A stop ring 504 and a first spring 505, the clamping rod 502 is movably inserted into the side of the fixing seat 501, the pulling handle 503 is fixedly connected to the end of the clamping rod 502, the stop ring 504 is fixedly sleeved on the outer surface of the clamping rod 502, the first spring 505 is movably sleeved on the outer surface of the clamping rod 502 and is close to one end of the pulling handle 503, two sides of the sealing cover 4 are fixedly connected with the connecting block 22, the connecting rod 24 is rotatably connected to the inside of the connecting block 22, the top of the fixing seat 501 is provided with an internal thread groove, the outer surface of the connecting rod 24 is provided with an external thread groove matched with the internal thread groove, the bottom of the internal thread groove is provided with a clamping groove 19, the bottom end of the connecting rod 24 is rotatably connected with a clamping block 25, the clamping block 25 is movably clamped inside the clamping groove 19, the inside of the fixing seat 501 is provided with a limiting groove 20, the stop ring 504 and the first spring 505 are movably clamped inside the limiting groove 20, and the clamping rod 502 penetrates through the limiting groove 20 and extends to the inside of the clamping groove 19, the clamping rod 502 is movably clamped with the clamping block 25;

in the operation process of the first embodiment, when the sealing cap 4 is movably clamped to the upper surface of the detection cylinder 1, the tapered plug 23 is inserted into the top end of the detection cylinder 1, then two operators insert the two sets of connecting rods 24 into the internal thread grooves on the upper surface of the fixing seat 501 respectively, and make the bottom end of the clamping block 25 enter the top portion of the clamping groove 19, at this time, the pulling handle 503 is pulled outwards, so that the pulling handle 503 drives the clamping rod 502 to move outwards, so that the retaining ring 504 slides in the limiting groove 20, the first spring 505 is compressed, at the same time, the end portion of the clamping rod 502 is moved out from the inside of the clamping groove 19, then the connecting rod 24 is pressed downwards and screwed, at this time, the external thread groove on the outer surface of the connecting rod 24 is matched with the internal thread grooves of the fixing seat 501, and the clamping block 25 and the connecting rod 24 rotate relatively, at this time, the clamping block 25 slides downwards to the bottom of the clamping groove 19, then the pulling handle 503 is released, at this time, under the action of the first spring 505, the clamping rod 502 moves towards the inside of the fixing seat 501 and is movably inserted on the outer surface of the clamping block 25 to fix the connecting rod 24, at this time, the conical plug 23 is tightly attached and inserted with the detection cylinder 1, and the situation that the sealing cover 4 is flicked along with the increase of the internal pressure of the detection cylinder 1 in the using process is avoided.

Example four,

As shown in fig. 1-8, an air tightness detector with alarm prompting function comprises a detection cylinder 1, an equipment seat 2, an air pump 3, a sealing cover 4, a sliding baffle 10 and an alarm 27, wherein the detection cylinder 1 is fixedly connected with the upper surface of the equipment seat 2, the air pump 3 is fixedly connected with one side of the upper surface of the equipment seat 2, the sealing cover 4 is movably clamped at the top end of the detection cylinder 1, the sliding baffle 10 is slidably connected with the inside of the detection cylinder 1, the alarm 27 is arranged at the top of the sealing cover 4, a circular groove 11 is arranged at the inner bottom of the detection cylinder 1, a first communicating pipe 7 is fixedly connected with the outer surface of the detection cylinder 1 and positioned above the circular groove 11, a second communicating pipe 8 is fixedly connected with the side surface of the circular groove 11, the first communicating pipe 7 and the second communicating pipe 8 are respectively fixedly connected with an air duct 6, the outer surfaces of the first communicating pipe 7, the second communicating pipe 8 and the air duct 6 are all fixedly connected with a control valve 9, the lower surface of the sliding baffle 10 is fixedly connected with a rubber sealing plate 12;

after the device is used, the air duct 6 and the control valve 9 on the outer surface of the first communicating pipe 7 are still in a closed state, the control valve 9 on the outer surface of the first communicating pipe 7 and the second communicating pipe 8 is opened, the air pressure inside the detection cylinder 1 and above the sliding baffle 10 is higher than the downward pressure below the sliding baffle 10, the air on the top inside the detection cylinder 1 is discharged downwards through the first communicating pipe 7 and the second communicating pipe 8 and enters the circular groove 11, so that the air pressure on the top inside the detection cylinder 1 is reduced, the piston 28 slides downwards under the action of the third spring 31, the pulling handle 503 is pulled outwards, the connecting rod 24 is screwed out upwards, the sealing cover 4 is taken down from the upper part of the detection cylinder 1, the control valve 9 on the outer surface of the first communicating pipe 7 is closed, and the control valve 9 on the outer surface of the air duct 6 is opened, and through starting the air pump 3, the air pump 3 inflates to the inside of the circular groove 11 through the second communicating pipe 8 at this moment, so that the air pressure inside the circular groove 11 is increased, the sliding baffle 10 drives the detected object to slide upwards inside the detection cylinder 1, the air pump 3 is closed when the sliding baffle 10 slides to a position close to the first communicating pipe 7, the air guide pipe 6 and the control valve 9 on the outer surface of the second communicating pipe 8 are closed, at this moment, the second spring 16 is compressed by pushing the four groups of clamping stop levers 15 outwards, and then the detected object is taken down.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.