1. The pneumatic pipe clamp valve comprises a valve body (1) and is characterized in that an air cylinder (4) and a lubricating and pressurizing assembly (5) connected with the air conveying end of the air cylinder (4) are fixed at the top end of the valve body (1), limiting pipes (2) are welded on two sides of the valve body (1) respectively, a pipe clamp rubber pipe (6) penetrating through the valve body (1) is attached to the inner portions of the limiting pipes (2), a sealing and locking assembly (3) is clamped between the inner wall of the end portion of each limiting pipe (2) and the outer wall of the end portion of each pipe clamp rubber pipe (6), and the sealing and locking assembly (3) is connected with the air conveying end of the lubricating and pressurizing assembly (5);

the sealing and locking assembly (3) comprises a locking ring (31) which is sleeved on the pipe clamp rubber pipe (6) and connected with the gas transmission end of the lubricating and pressurizing assembly (5), and a pushing ring (33) and a sealing ring (32) which are sequentially clamped in the locking ring (31), when the piston rod of the air cylinder moves, the lubricating and pressurizing assembly (5) inputs redundant waste gas in the air cylinder (4) into the locking ring (31) so as to drive the pushing ring (33) to tightly press the sealing ring (32) on the outer surface of the pipe clamp rubber pipe (6).

2. A pneumatic pinch valve according to claim 1, wherein the lubrication pressurizing assembly (5) comprises an oil cylinder (51) connected to the gas inlet of the cylinder (4), and a lubrication seat (54) connected to the gas inlet of the oil cylinder (51), and the lubrication seat (54) is fitted over the piston rod of the cylinder (4) and fixed in the gap formed between the cylinder (4) and the top surface of the valve body (1).

3. A pneumatic pinch valve according to claim 2, wherein a quartz light-transmitting window (52) is embedded in the outer circumference of the oil cylinder (51).

4. A pneumatic pinch valve according to claim 3, wherein the lubrication port of the lubrication seat (54) is connected to a high pressure relief valve (53), and the high pressure relief valve (53) is connected to the two locking rings (31) through a hose.

5. A pneumatic pinch valve according to claim 1, wherein an L-shaped retaining ring (311) and a squeeze ring (312) are secured to the inner cavity of each locking ring (31) in sequence from the end proximal to the other locking ring (31) to the end distal from the other locking ring (31).

6. A pneumatic pipe clamping valve according to claim 5, wherein a boss (313) is fixed to the outer circumference of one end of each locking ring (31) away from the other locking ring (31), and a gap for inserting the pipe clamping rubber pipe (6) is formed between each boss (313) and the inner wall of the limiting pipe (2) on the same side.

7. A pneumatic pinch valve according to claim 1, characterized in that the piston rod at the bottom end of the cylinder (4) extends through the top end of the valve body (1) and is connected to the diaphragm (41), the piston rod at the bottom end of the cylinder (4) extends through the top end of the valve body (1) and is connected to the stabilizing member (7), and the stabilizing member (7) comprises a lifting ring (71) sleeved on the piston rod at the bottom end of the cylinder (4) and extending through one end of the top end of the valve body (1), and a spring (74) coaxially arranged with the lifting ring (71) and located between the lifting ring (71) and the diaphragm (41).

8. A pneumatic pinch valve according to claim 7, wherein a sliding ring (72) is fixed to a top surface of the lifting ring (71), the sliding ring (72) is coaxially disposed with the lifting ring (71), and a plurality of balls (73) are embedded in an inner circumferential surface of the sliding ring (72), and the plurality of balls (73) are disposed one by one at equal intervals around a central axis of a radial plane of the sliding ring (72).

9. A pneumatic pinch valve according to claim 8, wherein the inner circumferential surface of the lifting ring (71) is connected to the outer circumferential surface of the cylinder (4) at the end adjacent to the diaphragm (41) by a thread pair (711).

10. A pneumatic pinch valve according to claim 1, wherein the bottom end of the cylinder (4) is fixed to the top end of the valve body (1) by a support member (8), the support member (8) comprises a support base (82) fixed to the bottom end surface of the cylinder (4), and support rods (81) fixed to the two ends of the support base (82), and the bottom end of each support rod (81) is fixed to the top end surface of the valve body (1).

Background

The pneumatic pipe clamp valve is suitable for conveying ore pulp, abrasive and dry and wet dust slurry in micro-particle shape, and is a control device for conveying slurry and chemical media in low-pressure pipelines at home and abroad.

According to the utility model provides a pneumatic tube presss from both sides valve that patent document with application number CN201621101405.5 provided, this product includes valve body and pipe clamp rubber tube, inside the valve body was arranged in to the pipe clamp rubber tube, its characterized in that, the inside equipartition of pipe clamp rubber tube has back the shape wire, and wire both ends are passed through the wire and are connected total controlling device, are equipped with the alarm on the total controlling device. The utility model discloses a pneumatic tube presss from both sides valve is according to the wire fracture whether the wearing and tearing condition of judging pipe clamp rubber tube, has avoided the error between artificial subjective judgement wearing and tearing condition and the actual wearing and tearing condition, has improved its utilization ratio under the circumstances of guaranteeing pipe clamp rubber tube sealing performance.

However, the pneumatic tube pinch valve has drawbacks, for example, although the tube pinch valve can avoid errors between human subjective wear and actual wear, redundant waste gas in the cylinder of the conventional pneumatic tube pinch valve cannot be effectively used, and the conventional pneumatic tube pinch valve is prone to shake due to the unsmooth feeling of the movement of the cylinder piston rod when pressing the rubber tube, thereby easily causing air leakage.

Disclosure of Invention

The invention mainly provides a pneumatic pipe clamp valve for solving the technical problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a pneumatic tube presss from both sides valve, including the valve body, the valve body top is fixed with the cylinder, and with the lubricated pressure components that cylinder gas transmission end is connected, the valve body both sides are equipped with the spacing pipe that welds on self, and are in spacing intraduct and with the sealed locking Assembly that lubricated pressure components gas transmission end is connected, spacing intraduct pastes and is equipped with the pipe clamp rubber tube that runs through the valve body, sealed locking Assembly locates on the pipe clamp rubber tube and with the locking ring that lubricated pressure components gas transmission end is connected including locating the cover, be equipped with in proper order in the clearance that locking ring and pipe clamp rubber tube formed and promote ring and sealing ring, when the activity of cylinder piston rod, lubricated pressure components with unnecessary waste gas input to the locking ring in the cylinder to it compresses tightly the sealing ring at pipe clamp rubber tube surface to drive and promote the ring.

Furthermore, the lubricating and pressurizing assembly comprises an oil cylinder connected with the air delivery port of the air cylinder and a lubricating seat connected with the oil delivery end of the oil cylinder, and the lubricating seat is sleeved on the piston rod of the air cylinder and fixed in a gap formed between the air cylinder and the top end surface of the valve body.

Furthermore, a quartz light-transmitting window is embedded in the outer peripheral surface of the oil cylinder.

Furthermore, the gas transmission port of the lubricating seat is connected with a high-pressure gas release valve, and the high-pressure gas release valve is connected with the two locking rings through a hose.

Furthermore, an L-shaped limiting ring and a squeezing ring are sequentially fixed on the inner cavity of each locking ring from one end close to the other locking ring to one end far away from the other locking ring.

Furthermore, bosses are fixed on the outer peripheral surface of one end of each locking ring, which is far away from the other locking ring, and gaps for inserting the pipe clamp rubber pipe are arranged between each boss and the inner wall of the limiting pipe on the same side.

Furthermore, the piston rod at the bottom end of the air cylinder penetrates through the shell at the top end of the valve body and extends to the interior of the valve body to be connected with the diaphragm, one end, penetrating through the shell at the top end of the valve body, of the piston rod at the bottom end of the air cylinder is connected with the stabilizing assembly, the stabilizing assembly comprises a lifting ring and a spring, the lifting ring is sleeved on the lifting ring and located at one end, penetrating through the shell at the top end of the valve body, of the piston rod at the bottom end of the air cylinder, and the spring is coaxially arranged with the lifting ring and located between the lifting ring and the diaphragm.

Furthermore, the top surface of lift ring is fixed with the slip ring, the slip ring with the coaxial setting of lift ring, just the slip ring inner ring surface embedding has a plurality of balls, and is a plurality of the ball encircles the radial planar axis of slip ring sets up equidistance one by one.

Furthermore, the surface of the inner ring of the lifting ring is connected with the outer peripheral surface of one end, close to the diaphragm, of the air cylinder through a thread pair.

Furthermore, the bottom end of the air cylinder is fixed at the top end of the valve body through a supporting assembly, the supporting assembly comprises a supporting seat fixed on the surface of the bottom end of the air cylinder and supporting rods fixed at two ends of the supporting seat, and the bottom end of each supporting rod is fixed on the surface of the top end of the valve body.

Compared with the prior art, the invention has the beneficial effects that:

firstly, the invention can lubricate the piston rod of the cylinder by utilizing the redundant waste gas of the cylinder, thereby improving the working efficiency of the pipe clamp valve, and specifically comprises the following steps: the cylinder exports inside its unnecessary waste gas to the inside back of oil section of thick bamboo, and the oil section of thick bamboo pressurizes to its inside to make things convenient for lubricating oil to spout to lubricated seat along with the change of storage environment atmospheric pressure in with pressurization, because lubricated seat cover is located on the piston rod of the cylinder, thereby lubricate gliding piston rod of the cylinder, prevent to produce dry friction between piston rod of the cylinder and the valve body top.

Secondly, the invention can utilize the redundant waste gas of the cylinder to clamp the pipe clamp rubber pipe, thereby improving the working efficiency of the pipe clamp valve, and specifically comprises the following steps: when the lubricating and pressurizing assembly inputs redundant waste gas in the cylinder into a gap formed between the surface of the inner cavity of the locking ring and the pushing ring, the lubricating and pressurizing assembly pushes the locking ring along with the expansion of high-pressure gas in the gap, and the locking ring is abutted to the sealing ring, so that the gap between the sealing ring and the outer peripheral surface of the pipe clamp rubber pipe is reduced, and the sealing ring is pushed to press the outer peripheral surface of the pipe clamp rubber pipe.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a cross-sectional view of the seal-locking assembly of the present invention;

FIG. 5 is a schematic structural view of the valve body of the present invention;

FIG. 6 is an enlarged view of the structure in area A of FIG. 3;

FIG. 7 is an enlarged view of the structure of region B in FIG. 3;

fig. 8 is an enlarged view of the structure of region a in fig. 4.

In the figure: 1. a valve body; 2. a limiting pipe; 3. a seal locking assembly; 31. locking a ring; 311. An L-shaped limiting ring; 312. an extrusion ring; 313. a boss; 32. a seal ring; 33. a push ring; 4. a cylinder; 41. a membrane; 5. lubricating the pressurized assembly; 51. an oil cylinder; 52. a quartz light-transmitting window; 53. a high pressure bleed valve; 54. a lubrication seat; 6. pipe clamp rubber pipes; 7. a stabilizing assembly; 71. A lifting ring; 711. a thread pair; 72. a slip ring; 73. a ball bearing; 74. a spring; 8. a support assembly; 81. a support bar; 82. and (4) supporting the base.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In an embodiment, referring to fig. 1-4, in a preferred embodiment of the present invention, a pneumatic tube pinch valve includes a valve body 1, a cylinder 4 is fixed at a top end of the valve body 1, and a lubrication pressurizing assembly 5 connected to a gas delivery end of the cylinder 4, a limiting tube 2 is welded to each of two sides of the valve body 1, a tube clamp rubber tube 6 penetrating through the valve body 1 is attached to an inside of the limiting tube 2, a sealing and locking assembly 3 is clamped between an inner wall of an end of the limiting tube 2 and an outer wall of an end of the tube clamp rubber tube 6, and the sealing and locking assembly 3 is connected to the gas delivery end of the lubrication pressurizing assembly 5;

the sealing and locking assembly 3 comprises a locking ring 31 which is sleeved on the pipe clamp rubber pipe 6 and is connected with the gas transmission end of the lubricating and pressurizing assembly 5, and a pushing ring 33 and a sealing ring 32 which are sequentially clamped in the locking ring 31, when the cylinder piston rod moves, the lubricating and pressurizing assembly 5 inputs redundant waste gas in the cylinder 4 into the locking ring 31 so as to drive the pushing ring 33 to tightly press the sealing ring 32 on the outer surface of the pipe clamp rubber pipe 6.

In the present embodiment, when the lubricating and pressurizing assembly 5 inputs the excess exhaust gas in the cylinder 4 into the gap formed between the inner cavity surface of the locking ring 31 and the pushing ring 33, the locking ring 31 is pushed along with the expansion of the high-pressure gas in the gap, the gap between the sealing ring 32 and the outer peripheral surface of the pipe clamp rubber tube 6 is reduced due to the contact between the locking ring 31 and the sealing ring 32, the sealing ring 32 is pushed to press against the outer peripheral surface of the pipe clamp rubber tube 6, the gap between the pipe clamp rubber tube 6 and the valve body 1 is reduced, and the sealing effect of the valve body 1 on the pipe clamp rubber tube 6 is improved;

further, no filter element may be disposed between the air outlet of the lubrication pressurizing assembly 5 and the locking ring 31 in the sealing and locking assembly 3, so that the wet high-pressure air with the lubricating oil in the lubrication pressurizing assembly 5 enters the gap formed between the inner cavity surface of the locking ring 31 and the push ring 33, and lubricates the push ring 33 sliding in the locking ring 31.

In particular, referring to fig. 2, 3 and 5, in another preferred embodiment of the present invention, the lubricating pressurizing assembly 5 includes an oil cylinder 51 connected to the gas transmission port of the cylinder 4, and a lubricating seat 54 connected with the oil delivery end of the oil cylinder 51, wherein the lubricating seat 54 is sleeved on the piston rod of the cylinder 4 and fixed in a gap formed between the cylinder 4 and the top end surface of the valve body 1, a quartz light-transmitting window 52 is embedded in the peripheral surface of the oil cylinder 51, a high-pressure air release valve 53 is connected with an air transmission port of the lubricating seat 54, the high-pressure air release valve 53 is connected with the two locking rings 31 through a hose, the bottom end of the cylinder 4 is fixed at the top end of the valve body 1 through a support assembly 8, the support assembly 8 includes a support seat 82 fixed to a bottom end surface of the cylinder 4, and the supporting rods 81 are fixed at two ends of the supporting seat 82, and the bottom end of each supporting rod 81 is fixed on the top surface of the valve body 1.

It should be noted that, in this embodiment, the cylinder 4 outputs the redundant waste gas inside the cylinder 4 to the oil cylinder 51, and at this time, the oil cylinder 51 pressurizes the inside of the cylinder, so that the lubricating oil is conveniently pressurized and sprayed into the lubricating seat 54 along with the change of the air pressure of the storage environment, and as the lubricating seat 54 is sleeved on the piston rod of the cylinder 4, the piston rod of the sliding cylinder 4 is lubricated, and dry friction between the piston rod of the cylinder 4 and the top end of the valve body 1 is prevented, and as the bottom end of the cylinder 4 is fixed on the top end of the valve body 1 through the supporting rod 81 and the supporting seat 82 in the supporting assembly 8, a gap formed between the supporting seat 82 and the top end of the valve body 1 is utilized, so that the oil pipe of the lubricating seat 54 is conveniently extended;

furthermore, since the quartz light-transmitting window 52 is embedded in the outer peripheral surface of the oil cylinder 51, the transparent quartz light-transmitting window 52 embedded in the oil cylinder 51 is utilized to observe the interior of the oil cylinder 51, thereby facilitating the addition of lubricating oil into the oil cylinder 51 by a user;

specifically, please refer to fig. 2, 3, 4 and 7 again, in another preferred embodiment of the present invention, an L-shaped limiting ring 311 and a pressing ring 312 are sequentially fixed in an inner cavity of each of the locking rings 31 from one end close to another locking ring 31 to one end far away from another locking ring 31, a boss 313 is fixed on an outer circumferential surface of one end of each of the locking rings 31 far away from another locking ring 31, and a gap for inserting the pipe clamp rubber pipe 6 is provided between each boss 313 and the inner wall of the limiting pipe 2 on the same side;

it should be noted that, in the present embodiment, when the sealing ring 32 is extruded by the pushing ring 33, the sealing ring 32 slides on the inclined surface of the extruding ring 312 in the locking ring 31 through the pushing ring, so that the sealing ring 32 is continuously extruded by the inclined surface of the extruding ring 312 and is pressed against the outer circumferential surface of the pipe clamping rubber tube 6, and a gap for inserting the pipe clamping rubber tube 6 is formed between the upper boss 313 of the sealing ring 32 and the inner wall of the limiting tube 2 on the same side, so as to facilitate the installation of the pipe clamping rubber tube 6;

further, the inclination of the extrusion ring 312 is 30 ° to 45 °, which facilitates the sliding of the sealing ring 32 on the steep inclined surface of the extrusion ring 312.

Specifically, referring to fig. 3 and 8, in another preferred embodiment of the present invention, a bottom end piston rod of the cylinder 4 penetrates through a top end housing of the valve body 1 and extends to the inside of the valve body 1 to be connected to the diaphragm 41, one end of the bottom end piston rod of the cylinder 4 penetrates through a top end housing of the valve body 1 to be connected to the stabilizing assembly 7, the stabilizing assembly 7 includes a lifting ring 71 sleeved on one end of the bottom end piston rod of the cylinder 4 penetrating through the top end housing of the valve body 1, and a spring 74 coaxially disposed with the lifting ring 71 and located between the lifting ring 71 and the diaphragm 41, a sliding ring 72 is fixed on a top end surface of the lifting ring 71, the sliding ring 72 and the lifting ring 71 are coaxially disposed, a plurality of balls 73 are embedded in an inner ring surface of the sliding ring 72, the plurality of balls 73 are equidistantly disposed one by one around a central axis of a radial plane of the sliding ring 72, and a screw pair 711 is disposed between an inner ring surface of the lifting ring 71 and an outer circumferential surface of one end of the cylinder 4 close to the diaphragm 41 Connecting;

it should be noted that, in this embodiment, when the piston rod at the bottom end of the cylinder 4 drives the diaphragm 41 thereon to compress the pipe clamp rubber hose 6, the spring 74 is disposed between the diaphragm 41 and the lifting ring 71 sleeved on the piston rod at the bottom end of the cylinder 4, so that the energy stored by the spring 74 is utilized to absorb the vibration generated by the diaphragm 41, thereby improving the stability of the diaphragm 41 when compressing the pipe clamp rubber hose 6, and the inner surface of the sliding ring 72 at the top end of the lifting ring 71 is embedded with a plurality of balls 73 abutting against the outer peripheral surface of the piston rod at the bottom end of the cylinder 4, so that when the lifting ring 71 slides on the piston rod at the bottom end of the cylinder 4, the sliding ring 72 rolls on the piston rod at the bottom end of the cylinder 4 through the balls 73 therein, thereby preventing dry friction from being generated between the piston rod at the bottom end of the cylinder 4 and the sliding ring 72 and the lifting ring 71;

further, since the elevating ring 71 is connected to the outer peripheral surface of the cylinder 4 near one end of the diaphragm 41 by the screw pair 711, the elevating ring 71 is locked to the outer peripheral surface of the cylinder 4 near one end of the diaphragm 41 by the screw pair 711, and another spring 74 is additionally installed between the elevating ring 71 and the inner wall of the valve body 1, so that the vibration generated from the diaphragm 41 is absorbed by the plurality of springs 74.

The specific operation mode of the invention is as follows:

when the pneumatic pipe clamp valve is used, a piston rod at the bottom end of the air cylinder 4 at the top end of the valve body 1 drives the membrane 41 on the air cylinder to press the pipe clamp rubber tube 6 tightly, so that the pipe clamp rubber tube 6 is extruded and deformed and tightened, and materials flowing in the pipe clamp rubber tube 6 are cut off, in the process, redundant waste gas in the air cylinder 4 is output into the oil cylinder 51 by the air cylinder 4, the oil cylinder 51 pressurizes the interior of the oil cylinder at the moment, so that lubricating oil is conveniently pressurized and sprayed into the lubricating seat 54 along with the change of the air pressure of a storage environment, and the sliding piston rod of the air cylinder 4 is lubricated because the lubricating seat 54 is sleeved on the piston rod of the air cylinder 4, so that dry friction between the piston rod of the air cylinder 4 and the top end of the valve body 1 is prevented;

when the lubricating and pressurizing assembly 5 inputs the redundant waste gas in the cylinder 4 into the gap formed between the surface of the inner cavity of the locking ring 31 and the pushing ring 33, the locking ring 31 is pushed along with the expansion of the high-pressure gas in the gap, and the gap between the sealing ring 32 and the outer peripheral surface of the pipe clamp rubber pipe 6 is reduced because the locking ring 31 is abutted against the sealing ring 32, so that the sealing ring 32 is pushed to press the outer peripheral surface of the pipe clamp rubber pipe 6.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.