1. The utility model provides a memory alloy pipeline valve, its characterized in that, including first pipeline (1), second pipeline (2), third pipeline (3) and shunt tubes (301), be provided with second pipeline (2) before first pipeline (1), the front end of second pipeline (2) is provided with third pipeline (3), the side fixedly connected with shunt tubes (301) of third pipeline (3), the inside of third pipeline (3) is provided with fixed column (14), the fixed surface of third pipeline (3) is provided with kelly (18), the front end of third pipeline (3) is provided with pull ring (19), the fixed surface of pull ring (19) is connected with stay cord (20), intercommunication groove (21) that are used for placing stay cord (20) are all seted up to the upper and lower both sides of third pipeline (3).

2. The memory alloy pipeline valve according to claim 1, wherein a disc (4) is fixedly arranged inside the second pipeline (2), an opening (30) for placing a cover plate (25) is formed in the surface of the second pipeline (2), and butt-joint rods (26) penetrate through the inside of the second pipeline (2) and the inside of the cover plate (25); a sealing gasket (31) is fixedly arranged on the periphery of the cover plate (25), a handle (32) is fixedly connected to the surface of the cover plate (25), a tension spring (27) is fixedly arranged between the butt joint rod (26) and the second pipeline (2), a traction rope (29) is fixedly connected between the butt joint rod (26) and the adjacent butt joint rod (26), and convex blocks (28) are fixedly arranged on the upper side and the lower side of the second pipeline (2); through holes (401) are formed in the surface of the disc (4), and the through holes (401) are symmetrically distributed on the front side and the rear side of the disc (4).

3. A marmem pipe valve according to claim 2, characterized in that the inside of said disc (4) is movably mounted with a heat pipe (5), and a marmem spring (6) is fixedly connected between the surface of the heat pipe (5) and the disc (4).

4. The memory alloy pipeline valve according to claim 3, wherein the central axes of the disk (4), the heat pipe (5) and the memory alloy spring (6) are on the same straight line, the heat pipe (5) and the disk (4) are in sliding connection, the surface of the heat pipe (5) is provided with grooves (12) for placing the ball (11), and the grooves (12) are distributed in a centrosymmetric manner inside the heat pipe (5).

5. A memory alloy pipeline valve according to claim 4, wherein the heat conducting pipe (5) and the disc (4) form an elastic structure through the memory alloy spring (6), a valve plate (7) is fixedly installed at the front end of the heat conducting pipe (5), and the front end of the valve plate (7) is in a truncated cone shape.

6. The memory alloy pipeline valve according to claim 5, wherein the inner thread of the valve plate (7) is provided with a stud (8), the front end of the stud (8) is movably provided with a square rod (9), the side surface of the square rod (9) is fixedly provided with a rubber rod (10), the rear end of the square rod (9) is sequentially fixed with a fixed block (22), a pull rod (23) and a rotating handle (24), and the front end of the rubber rod (10) is fixedly connected with a ball body (11).

7. The memory alloy pipeline valve according to claim 6, wherein a dredging rod (13) is fixedly arranged on the surface of the stud (8), the diameter of a ball block at the front end of the dredging rod (13) is larger than that of a cylinder at the tail end of the dredging rod (13), and the dredging rod (13) and the through hole (401) in the disc (4) correspond to each other.

8. The memory alloy pipeline valve according to claim 1, wherein a cross rod (15) is fixedly connected to the front end of the fixed column (14), a baffle (16) is fixedly arranged on the side surface of the cross rod (15), and a pressure spring (17) is fixedly connected between the baffle (16) and the third pipeline (3).

9. The memory alloy pipeline valve according to claim 8, wherein the baffle (16) forms an elastic structure with the third pipeline (3) through a pressure spring (17), the fixing column (14), the cross rod (15) and the baffle (16) are of an integrated structure, and the fixing column (14), the cross rod (15) and the baffle (16) form a telescopic structure with the third pipeline (3) through a heat pipe (5).

Background

Pipeline valve is essential equipment among the industrial production, and mainly used ends to the fluidics, mainly comprises valve plate hand wheel and disk seat etc. rotates the valve plate through hand wheel rotation valve rod drive valve plate to realize opening and closing of pipeline, some pipeline valves still have some problems when using:

the existing valve is single in use mode, generally only can be used as a one-way valve or a two-way valve, is inconvenient to rapidly switch between the two valves, is poor in adjustability, and is inconvenient to protect the valve when the water pressure is large in the use process, so that the water pipe is easily broken.

Disclosure of Invention

The invention provides a memory alloy pipeline valve aiming at the technical problems in the prior art, and aims to solve the problems that some of the prior pipeline valves mentioned above are single in use mode and inconvenient to automatically release pressure when water pressure is too high.

The technical scheme for solving the technical problems is as follows: the utility model provides a memory alloy pipeline valve, includes first pipeline, second pipeline, third pipeline and shunt tubes, be provided with the second pipeline before the first pipeline, the front end of second pipeline is provided with the third pipeline, the side fixedly connected with shunt tubes of third pipeline, the inside of third pipeline is provided with the fixed column, the fixed surface of third pipeline is provided with the kelly, the front end of third pipeline is provided with the pull ring, the fixed surface of pull ring is connected with the stay cord, the intercommunication groove that is used for placing the stay cord is all offered to the upper and lower both sides of third pipeline.

The invention has the beneficial effects that:

1) the memory alloy pipeline valve has a better effect, the memory alloy pipeline valve is improved on the basis of the prior art, the memory alloy spring on the device is utilized to ensure that the device can adapt to different water temperature conditions to be used as different valves when in use, the memory alloy pipeline valve can be used as a one-way valve when the water temperature is not enough to influence the memory alloy, water flow can only enter from the right side of the device, and water flow can enter from the left side of the device and can also enter from the right side of the device when the water temperature is enough to influence the memory alloy spring in the device, so that the defect that the using modes of the prior pipeline valves are single is overcome, and the memory alloy pipeline valve has the advantage of higher adjustability;

2) when the memory alloy pipeline valve is used, the heat conduction pipe can abut against the baffle through the linkage structure on the device when the water pressure is too high, so that the baffle moves towards the left side of the device, water flow can be shunted, the situation that the pipeline is broken due to the too high water pressure is avoided, the use safety of the device is improved, the defect that the existing device is poor in safety when the device is used is overcome, the safe water inlet and outlet of a water pipe are ensured, the cover plate can be quickly disassembled and assembled in the use process of the device, and therefore impurities in the device are fully cleaned;

3) this memory alloy pipeline valve is when using, can strike the inner wall of heat pipe through inside rubber pole and spheroid, can also dredge the work to the inside of device through dredging the pole simultaneously when rivers strike the valve plate, avoids the inside circumstances such as jam that appear of device, has solved the defect that can not carry out automatic mediation when using of some current valves, has the better advantage of result of use.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, a disc is fixedly arranged inside the second pipeline, an opening for placing a cover plate is formed in the surface of the second pipeline, and butt-joint rods penetrate through the inside of the second pipeline and the inside of the cover plate; the periphery of the cover plate is fixedly provided with a sealing gasket, the surface of the cover plate is fixedly connected with a handle, a tension spring is fixedly arranged between each butt joint rod and the corresponding second pipeline, a traction rope is fixedly connected between each butt joint rod and the corresponding adjacent butt joint rod, and the upper side and the lower side of each second pipeline are fixedly provided with a lug; the surface of the disc is provided with through holes which are symmetrically distributed on the front side and the rear side of the disc.

The beneficial effect who adopts above-mentioned further scheme is that, can make the heat pipe can slide on the disc through the middle part of disc, can remove the block through extension spring and butt joint pole on the device apron to the apron to make the device can clear up inside the second pipeline.

Furthermore, a heat conduction pipe is movably mounted inside the disc, and a memory alloy spring is fixedly connected between the surface of the heat conduction pipe and the disc.

Adopt the beneficial effect of above-mentioned further scheme to be, can make rivers get into the inside back of heat pipe influence memory alloy spring through the memory alloy spring on the heat pipe for the spring can shorten.

Further, the axis of disc, heat pipe and memory alloy spring is on same straight line, for sliding connection between heat pipe and the disc, and the surface of heat pipe is offered and is used for placing spheroidal recess, and the recess is central symmetry form distribution on the inside of heat pipe.

The beneficial effect who adopts above-mentioned further scheme is that, can make the heat pipe wholly vibrate through the recess cooperation spheroid on the device to drive the disc vibration.

Furthermore, the heat conduction pipe forms elastic structure through between memory alloy spring and the disc, and the front end fixed mounting of heat conduction pipe has the valve plate, the shape of valve plate front end is the round platform form.

Adopt above-mentioned further scheme's beneficial effect be, valve plate through the valve plate cooperation memory alloy spring of device front end for water pressure opens the valve plate when too big.

Further, the inside screw thread of valve plate installs the double-screw bolt, and the front end movable mounting of double-screw bolt has square pole, and the side of square pole is fixed and is provided with the rubber pole, and the rear end of square pole is fixed with fixed block, pull rod and turning handle in proper order, the front end fixedly connected with spheroid of rubber pole.

The beneficial effect who adopts above-mentioned further scheme is, utilizes rubber pole and toughness for the rubber pole can strike the recess through the spheroid when rotating, thereby produces the vibration, makes the impurity on the disc can be shaken off.

Furthermore, a dredging rod is fixedly arranged on the surface of the stud, the diameter of the ball block at the front end of the dredging rod is larger than that of the cylinder at the tail end of the dredging rod, and the dredging rod and the through hole in the disc correspond to each other.

The beneficial effect who adopts above-mentioned further scheme is that, when water pressure changes, the reciprocating motion of dredging rod can dredge the through-hole on the disc, has promoted the result of use of device.

Furthermore, the front end fixedly connected with horizontal pole of fixed column, the fixed baffle that is provided with in side of horizontal pole, fixedly connected with pressure spring between baffle and the third pipeline.

The beneficial effect who adopts above-mentioned further scheme is that, can be through the pressure spring on the baffle for the baffle can remove left after the pressurized, thereby reaches the shunt tubes.

Further, the baffle passes through to constitute elastic construction between pressure spring and the third pipeline, and fixed column, horizontal pole and baffle formula structure as an organic whole, and fixed column, horizontal pole and baffle pass through to constitute extending structure between heat pipe and the third pipeline.

The beneficial effect who adopts above-mentioned further scheme is, utilizes the extending structure between baffle and the third pipeline for can open the baffle automatically when water pressure is too big, make the shunt tubes open, avoid the pipeline to break because of the too big emergence of water pressure.

A grabbing method of a memory alloy pipeline valve comprises the following steps:

s1: fixing a first pipeline, a second pipeline and a third pipeline, feeding water from the first pipeline, discharging water from the third pipeline and a flow dividing pipe, completing preparation work before the device is used, cleaning residues in the previous use, pulling a traction rope to enable a butt joint rod to move outwards under the action of a convex block, so that a tension spring is stretched until the front end of the butt joint rod is separated from the inside of a cover plate, completing clamping removal work on the cover plate, and removing the whole cover plate through a handle, thereby cleaning impurities in the second pipeline and completing the preparation work;

s2: after the stud is installed, the heat conduction pipe is blocked through the stud, so that the valve plate is only influenced by water pressure and not influenced by temperature, water flow is guaranteed not to flow into the heat conduction pipe, after the water pressure between the first pipeline and the second pipeline reaches a certain degree, the valve plate moves leftwards, the memory alloy spring is compressed, and the water flow enters the second pipeline and the third pipeline;

s3: after the stud is removed, water flow can flow into the heat conduction pipe, so that the device can transfer heat to the memory alloy spring on the outer side of the heat conduction pipe through the heat conduction pipe, the memory alloy spring contracts after being heated, the device can be influenced by temperature, the whole opening and closing of the valve is controlled, the valve can be used as a one-way valve when used under the condition that the temperature of water does not influence the memory alloy spring, and the valve can be used as a two-way valve when used under the condition that the temperature of water can influence the memory alloy spring;

s4: when the dredging device is used, the stud can be installed to enable the stud to rotate to drive the square rod, the rubber rod and the ball body to synchronously rotate, the rubber rod is made of rubber, so that the ball body can knock grooves in the inner wall of the heat conduction pipe when the rubber rod rotates, a vibration effect is generated, the impurities on the disc are preliminarily cleaned, the dredging rod moves towards the left side when the valve plate is jacked up by water pressure, and the front end of the dredging rod corresponds to the through hole, so that the impurities on the inner wall of the through hole can be dredged by the ball block at the front end of the dredging rod;

s5: when water pressure is great, in order to protect pipeline everywhere, can drive fixed column and dredge the pole through the removal of double-screw bolt and heat pipe and remove to the left side, when fixed column and dredge the pole and remove to the left side, can drive the fixed column and remove, the fixed column is opened the opening of third pipeline and shunt tubes support gradually this moment for rivers can flow from the front and back both sides of third pipeline, reach the effect of reposition of redundant personnel.

In summary, the following steps: the memory alloy pipeline valve has a better effect, the memory alloy pipeline valve is improved on the basis of the prior art, the memory alloy spring on the device is utilized to ensure that the device can adapt to different water temperature conditions to be used as different valves when in use, the memory alloy pipeline valve can be used as a one-way valve when the water temperature is not enough to influence the memory alloy, water flow can only enter from the right side of the device, and water flow can enter from the left side of the device and can also enter from the right side of the device when the water temperature is enough to influence the memory alloy spring in the device, so that the defect that the using modes of the prior pipeline valves are single is overcome, and the memory alloy pipeline valve has the advantage of higher adjustability; when the memory alloy pipeline valve is used, the heat conduction pipe can abut against the baffle through the linkage structure on the device when the water pressure is too high, so that the baffle moves towards the left side of the device, water flow can be shunted, the situation that the pipeline is broken due to the too high water pressure is avoided, the use safety of the device is improved, the defect that the existing device is poor in safety when the device is used is overcome, the safe water inlet and outlet of a water pipe are ensured, the cover plate can be quickly disassembled and assembled in the use process of the device, and therefore impurities in the device are fully cleaned; this memory alloy pipeline valve is when using, can strike the inner wall of heat pipe through inside rubber pole and spheroid, can also dredge the work to the inside of device through dredging the pole simultaneously when rivers strike the valve plate, avoids the inside circumstances such as jam that appear of device, has solved the defect that can not carry out automatic mediation when using of some current valves, has the better advantage of result of use.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is a schematic view of a second conduit and valve plate connection according to the present invention;

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

FIG. 4 is a schematic view of the connection structure of the heat pipe and the disk of the present invention;

FIG. 5 is a schematic diagram of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is a side cross-sectional structural view of a heat transfer tube according to the present invention;

FIG. 7 is a schematic view of the connection structure of the heat pipe and the valve plate according to the present invention;

FIG. 8 is a schematic view of a third pipe and clamping rod connection according to the present invention;

FIG. 9 is a side cross-sectional structural view of a square bar of the present invention;

FIG. 10 is a schematic view of the connection structure of the square rod and the fixing block of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the device comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline, a fourth pipeline, a sixth pipeline, a fourth pipeline, a fifth pipeline, a fourth pipeline, a pipeline.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Some pipeline valves, usually one-way valves or two-way valves, cannot switch two valves under different water temperature conditions, are poor in adjustability and single in use mode, cannot limit the functions of internal parts of components well in the use process, and are low in application range;

meanwhile, some existing valves are poor in safety and cannot automatically relieve pressure when water pressure is too high, so that pipelines are prone to breaking, the existing valves are difficult to dredge the interior, impurities in the device cannot be sufficiently cleaned, and the memory alloy pipeline valve is provided for solving the problems.

The present invention provides the following preferred embodiments

As shown in fig. 1-3 and 8, a memory alloy pipeline valve comprises a first pipeline 1, a second pipeline 2, a third pipeline 3 and a shunt pipe 301, wherein the second pipeline 2 is arranged in front of the first pipeline 1, the third pipeline 3 is arranged at the front end of the second pipeline 2, the shunt pipe 301 is fixedly connected to the side surface of the third pipeline 3, a fixed column 14 is arranged inside the third pipeline 3, a clamping rod 18 is fixedly arranged on the surface of the third pipeline 3, a pull ring 19 is arranged at the front end of the third pipeline 3, a pull rope 20 is fixedly connected to the surface of the pull ring 19, and communication grooves 21 for placing the pull rope 20 are formed in the upper side and the lower side of the third pipeline 3; a disc 4 is fixedly arranged in the second pipeline 2, an opening 30 for placing a cover plate 25 is formed in the surface of the second pipeline 2, and butt-joint rods 26 penetrate through the inside of the second pipeline 2 and the inside of the cover plate 25; a sealing gasket 31 is fixedly arranged around the cover plate 25, a handle 32 is fixedly connected to the surface of the cover plate 25, a tension spring 27 is fixedly arranged between the butt joint rod 26 and the second pipeline 2, a traction rope 29 is fixedly connected between the butt joint rod 26 and the adjacent butt joint rod 26, and a convex block 28 is fixedly arranged on each of the upper side and the lower side of the second pipeline 2; through-hole 401 has been seted up on the surface of disc 4, through-hole 401 symmetric distribution is both sides around disc 4, can dredge work through the cooperation of the through-hole 401 of both sides around the device mediation pole 13, can come to carry out the pressure release to the inside fluid of device through shunt tubes 301 simultaneously, avoid the too big pipeline that leads to of pressure to break, can be through placing pull ring 19 on the surface of kelly 18 simultaneously for the device can adapt to great water pressure and use.

In this embodiment, as shown in fig. 4-6, in order to further promote the convenience of the use of pipeline valve, the inside movable mounting of disc 4 has heat pipe 5, fixedly connected with memory alloy spring 6 between the surface of heat pipe 5 and disc 4, the axis of heat pipe 5 and memory alloy spring 6 is on the same straight line, be sliding connection between heat pipe 5 and disc 4, recess 12 that is used for placing spheroid 11 is seted up on the surface of heat pipe 5, recess 12 is central symmetry form distribution on the inside of heat pipe 5, can come to outwards transmit the heat through heat pipe 5 on the device, the practical convenience of device has been promoted.

In this embodiment, as shown in fig. 1-4 and fig. 9-10, in order to further improve the adjustability of the pipeline valve, the heat conducting pipe 5 forms an elastic structure through the memory alloy spring 6 and the disc 4, the front end of the heat conducting pipe 5 is fixedly installed with the valve plate 7, the front end of the valve plate 7 is in a truncated cone shape, the internal thread of the valve plate 7 is installed with the stud 8, the front end of the stud 8 is movably installed with the square rod 9, the lateral surface of the square rod 9 is fixedly provided with the rubber rod 10, the rear end of the square rod 9 is sequentially fixed with the fixing block 22, the pull rod 23 and the rotating handle 24, the front end of the rubber rod 10 is fixedly connected with the ball 11, the use mode can be adjusted by installing the stud 8 or detaching the stud 8, the function of the memory alloy spring 6 can be limited, and the valve can be opened and closed according to the temperature by utilizing the memory alloy spring 6.

In this embodiment, as shown in fig. 4-5 and 7, in order to further improve the blockage dredging effect on the pipeline valve, a dredging rod 13 is fixedly arranged on the surface of the stud 8, the diameter of a ball block at the front end of the dredging rod 13 is larger than the diameter of a cylinder at the tail end of the dredging rod 13, the dredging rod 13 and the through hole 401 on the disk 4 correspond to each other, and when the water pressure inside the pipeline changes, the impurities inside the through hole 401 can be dredged by the back-and-forth movement of the dredging rod 13.

In this embodiment, as shown in fig. 1-2, in order to further improve the safety of the use of the pipeline valve, the front end of the fixed column 14 is fixedly connected with a cross bar 15, the side surface of the cross bar 15 is fixedly provided with a baffle 16, and a pressure spring 17 is fixedly connected between the baffle 16 and the third pipeline 3; baffle 16 passes through to constitute elastic construction between pressure spring 17 and the third pipeline 3, and fixed column 14, horizontal pole 15 and 16 formula structures as an organic whole of baffle, fixed column 14, horizontal pole 15 and baffle 16 pass through to constitute extending structure between heat pipe 5 and the third pipeline 3, can utilize extending structure on the device to open and close shunt 301, have promoted the practicality of device.

The specific working process of the invention is as follows:

(1) spliced pipeline

Come to fix first pipeline 1, second pipeline 2 and third pipeline 3 through the ring flange, intake by first pipeline 1, third pipeline 3 and shunt tubes 301 go out water, the preparation before the completion device uses, the residue when using before is cleared up, pulling haulage rope 29, make butt joint pole 26 outside under the effect of lug 28 remove, thereby make extension spring 27 stretched, break away from the inside of apron 25 until the front end of butt joint pole 26, the completion is to the release block work of apron 25, come to wholly demolish apron 25 through handle 32, thereby clear up the impurity of second pipeline 2 inside, accomplish the preparation work.

(2) Mounting stud 8

After the installation double-screw bolt 8, can block up heat pipe 5 through double-screw bolt 8 for valve plate 7 only receives hydraulic influence, does not receive the influence of temperature, guarantees that rivers can not flow into the inside of heat pipe 5, and after water pressure between first pipeline 1 and second pipeline 2 reached certain degree, valve plate 7 moved left, and memory alloy spring 6 is compressed, makes rivers get into the inside of second pipeline 2 and third pipeline 3.

(3) Removing the stud 8

Demolish behind the double-screw bolt 8, rivers can flow into the inside of heat pipe 5, make the device can pass through on heat pipe 5 transmits the memory alloy spring 6 in the heat pipe 5 outside with the heat, memory alloy spring 6 contracts after being heated, make the device can receive the influence of temperature, thereby the holistic opening of control valve is closed, when using under the condition that can not influence memory alloy spring 6 to the temperature, this valve uses as the check valve, when using under the condition that the temperature can influence memory alloy spring 6, this valve can regard as the two-way valve to use.

(4) Cleaning the through hole 401 on the surface of the disc 4

When using, can be through installation double-screw bolt 8, make double-screw bolt 8 rotate and drive square pole 9, rubber pole 10 and spheroid 11 rotate in step, because rubber pole 10 is the rubber material, consequently can make spheroid 11 strike each other recess 12 on the heat pipe 5 inner wall when rubber pole 10 rotates, thereby produce the vibration effect, impurity to disc 4 carries out preliminary cleaning work, when water pressure pushes up valve plate 7, dredge 13 removes to the left side, because correspond each other between dredge 13's front end and the through-hole 401, consequently can come to dredge the inner wall impurity of through-hole 401 through the ball piece of dredge 13 front end.

(5) When the water pressure is higher, the flow is divided

When water pressure is great, in order to protect pipeline everywhere, can drive fixed column 14 and dredge rod 13 to the left side removal through the removal of double-screw bolt 8 and heat pipe 5, when fixed column 14 and dredge rod 13 removed to the left side, can drive fixed column 14 and remove, fixed column 14 opens the opening of third pipeline 3 and shunt tubes 301 support gradually this moment for rivers can flow from the front and back both sides of third pipeline 3, reach the effect of reposition of redundant personnel.

In summary, the following steps: the invention has the advantages that the device is improved on the basis of the prior art, the memory alloy spring 6 on the device is utilized to ensure that the device can adapt to different water temperature conditions to be used as different valves when in use, the device can be used as a one-way valve when the water temperature is not enough to influence the memory alloy, water flow can only enter from the right side of the device, and the water flow can enter from the left side of the device and also can enter from the right side of the device when the water temperature is enough to influence the memory alloy spring 6 in the device, so that the defect that the use modes of some existing pipeline valves are single is overcome, and the device has the advantage of higher adjustability.

When the memory alloy pipeline valve is used, the heat conducting pipe 5 is abutted against the baffle 16 through a linkage structure on the device when the water pressure is too high, the baffle 16 moves towards the left side of the device, so that water flow can be shunted, the situation that the pipeline is broken due to the too high water pressure is avoided, the use safety of the device is improved, the defect that the existing device is poor in safety when used is overcome, the safe water inlet and outlet of a water pipe are ensured, the cover plate 25 can be quickly disassembled and assembled when the device is used, and therefore impurities in the device are fully cleaned;

this memory alloy pipeline valve is when using, can strike the inner wall of heat pipe 5 through inside rubber pole 10 and spheroid 11, can also dredge the work to the inside of device through dredging rod 13 simultaneously when rivers strike valve plate 7, avoids the inside circumstances such as jam that appear of device, has solved the defect that current some valves can not carry out automatic mediation when using, has the better advantage of result of use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.