CN218187216U

CN218187216U - Rack valve and instrument table

Info

Publication number: CN218187216U
Application number: CN202222134194.7U
Authority: CN
Inventors: 吕冰; 周元胜; 曾伟红; 黄学华
Original assignee: Guangzhou Ajax Medical Equipment Co Ltd
Current assignee: Guangzhou Ajax Medical Equipment Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-01-03
Anticipated expiration: 2032-08-12

Abstract

The application belongs to the technical field of dental medical instruments, and more particularly relates to a hanger valve and an instrument table. The hanger valve comprises a valve body, a diaphragm, a push rod and a deflector rod assembly, wherein the valve body is provided with an accommodating cavity, one end of the valve body is provided with an air inlet connecting pipe and an air outlet connecting pipe which are respectively communicated with the accommodating cavity, and the other end of the valve body is provided with a through hole communicated with the accommodating cavity; the membrane is arranged in the accommodating cavity; the push rod penetrates through the through hole, moves along the axial direction when being subjected to external force and pushes the diaphragm against the air outlet of the air inlet connecting pipe; after the external force is removed, the membrane can be separated from the air outlet of the air inlet connecting pipe under the action of the air in the air inlet connecting pipe; the deflector rod component is arranged on the shell; when the airflow passage is disconnected, the distance between one end of the accommodating cavity communicated with the through hole and the diaphragm is smaller than or equal to 0.7mm. The diaphragm can not turn over in a large angle in the process of repeated reciprocating motion, and the blocking effect of the diaphragm on the air outlet of the air inlet connecting pipe is ensured.

Description

Hanger valve and instrument table

Technical Field

The application belongs to the technical field of dental medical instruments, and more particularly relates to a hanger valve and an instrument table.

Background

Generally, an instrument table for dentistry places a pneumatic handpiece through a hanger seat, and a hanger valve is arranged on the hanger seat to control the on-off of an air passage of the pneumatic handpiece.

At present, some rack valves are provided with an air inlet connecting pipe, an air outlet connecting pipe and a push rod penetrating through the rack valves, the air inlet connecting pipe and the air outlet connecting pipe are respectively communicated with a cavity inside the rack valve, and air is always introduced into the air inlet connecting pipe. A diaphragm is arranged in the inner cavity of the hanger valve and can move in the cavity along the height direction of the cavity, and when the pneumatic mobile phone is not placed on the hanger seat, the push rod presses the diaphragm to enable the diaphragm to move towards the direction of the air inlet connecting pipe and block an air outlet of the air inlet connecting pipe; when the pneumatic mobile phone is placed on the hanging frame seat, the push rod releases the pressing on the diaphragm, and at the moment, the diaphragm moves towards the direction of the air outlet far away from the air inlet connecting pipe under the action of the gas pressure in the air inlet connecting pipe and opens the air outlet of the air inlet connecting pipe.

However, the pneumatic mobile phone has a high use frequency, and the diaphragm is likely to turn over at a large angle in the process of repeated reciprocating motion, so that the diaphragm cannot reliably block the air outlet of the air inlet connecting pipe.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a stores pylon valve and apparatus platform to solve the diaphragm that exists among the correlation technique and take place great angle's upset easily at the in-process of reciprocating motion many times, lead to the unable reliable shutoff of diaphragm to admit air the problem of the gas outlet of takeover.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in one aspect, there is provided a hanger valve comprising:

the valve body is provided with an accommodating cavity, one end of the valve body is provided with an air inlet connecting pipe and an air outlet connecting pipe which are respectively communicated with the accommodating cavity, the air inlet connecting pipe, the accommodating cavity and the air outlet connecting pipe are sequentially communicated to form an air flow passage, and the other end of the valve body is provided with a through hole communicated with the accommodating cavity;

the membrane is arranged in the accommodating cavity;

the push rod penetrates through the through hole, moves along the axial direction when being subjected to external force and pushes the diaphragm against the air outlet of the air inlet connecting pipe so as to cut off the air flow passage; after the push rod withdraws the external force, the membrane can be separated from the air outlet of the air inlet connecting pipe under the action of the air in the air inlet connecting pipe so as to communicate the air flow passage;

the deflector rod assembly is arranged on the valve body and used for applying external force to the push rod so as to enable the push rod to move along the axial direction of the through hole;

when the airflow passage is disconnected, the distance between one end of the accommodating cavity, which is communicated with the through hole, and the diaphragm is smaller than or equal to 0.7mm.

In one embodiment, the valve body comprises a shell and a cover body covering the shell, the air inlet connecting pipe and the air outlet connecting pipe are respectively arranged on the shell, and the through hole is formed in the cover body.

In one embodiment, the membrane is an elastic membrane, a supporting portion is convexly arranged on the bottom wall of the accommodating cavity on the shell, the supporting portion is provided with a channel for communicating the air inlet connecting pipe with the air outlet connecting pipe, and the supporting portion is used for supporting the edge position of one surface, facing the air inlet connecting pipe, of the membrane.

In one embodiment, a gap for forming an exhaust passage is formed between the through hole and the push rod, the air outlet connecting pipe is communicated with the exhaust passage when the diaphragm blocks an air outlet of the air inlet connecting pipe, and the diaphragm is pressed against one end of the through hole facing the accommodating cavity under the action of air in the air inlet connecting pipe to block the exhaust passage after the external force on the push rod is removed.

In one embodiment, the cover body is provided with a butting part at the outer side of the through hole, one surface of the membrane facing the air inlet connecting pipe abuts against the supporting part, one surface of the membrane facing the through hole abuts against the butting part, the butting part abuts against the edge position of the membrane, and the butting part is provided with a flow passage for air flow to flow through.

In one embodiment, a plurality of limiting parts are convexly arranged on the side wall of the housing at intervals, and each limiting part is abutted against the outer peripheral surface of the diaphragm.

In one embodiment, the shifting lever assembly comprises a shifting lever and an elastic element connected between the shifting lever and the shell, the shifting lever is provided with a shaft body, the shell is provided with two connecting portions arranged at intervals, each connecting portion is provided with a hole position for the corresponding end portion of the shaft body to extend into, and at least one connecting portion is provided with a guide surface for guiding the end portion of the shaft body into the hole position.

In one embodiment, an annular protrusion is convexly arranged on the end face of one end of the shell, which is far away from the air inlet connecting pipe, and an annular groove for the annular protrusion to extend into is arranged on the cover body.

In one embodiment, the shell, the air inlet connecting pipe and the air outlet connecting pipe are formed into a whole through injection molding, and the annular bulge and the annular groove are fixed through welding.

On the other hand, an instrument table is provided, which comprises a hanging frame seat for placing a pneumatic mobile phone and a hanging frame valve provided by any embodiment, wherein the hanging frame valve is arranged on the hanging frame seat, and when the pneumatic mobile phone is placed on the hanging frame seat, the pneumatic mobile phone presses against the deflector rod assembly to cancel the external force applied to the push rod so as to communicate the airflow channel; when the pneumatic mobile phone is separated from the hanging frame seat, the deflector rod component applies external force to the push rod to disconnect the airflow channel.

The stores pylon valve and apparatus platform that any above-mentioned embodiment of this application provided have following beneficial effect at least: when external force is applied to the push rod, the membrane can be pressed against the air outlet of the air inlet connecting pipe through axial movement, and after the external force on the push rod is removed, the membrane can be pushed open by air in the air inlet connecting pipe, so that the membrane is separated from the air outlet of the air inlet connecting pipe. Namely, the diaphragm can reciprocate in the accommodating cavity under the action of gas pressure in the push rod and the air inlet connecting pipe. When the airflow passage is disconnected, the distance between one end of the accommodating cavity communicated with the through hole and the diaphragm is smaller than or equal to 0.7mm, namely, the accommodating cavity can limit the overturning angle of the diaphragm in the moving process, so that the diaphragm cannot overturn at a large angle in the moving process. Even though the diaphragm takes place the upset of less angle at the in-process of motion, after propping up with the holding chamber towards the one end of admitting air and taking over or the holding chamber one end towards the through-hole, the wall in holding chamber can promote the diaphragm and can return the upset to initial condition in the past. Therefore, the membrane cannot turn over at a large angle in the process of repeated reciprocating motion, and the blocking effect of the membrane on the air outlet of the air inlet connecting pipe is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a rack valve provided in an embodiment of the present application;

FIG. 2 is an exploded view of the pylon valve of FIG. 1;

FIG. 3 is a schematic view of a hanger valve provided in an embodiment of the present application when a diaphragm opens an air outlet of an air inlet connection;

fig. 4 is a schematic view of a hanger valve provided in an embodiment of the present application when a diaphragm blocks an air outlet of an air inlet connection pipe;

fig. 5 is a schematic structural diagram of a housing provided in an embodiment of the present application;

fig. 6 is a schematic view of a cover body facing a receiving cavity according to an embodiment of the present disclosure.

Wherein, in the drawings, the reference numerals are mainly as follows:

1. a valve body; 11. a housing; 111. an air inlet connecting pipe; 112. an air outlet connecting pipe; 113. a support portion; 1131. a channel; 114. a limiting part; 115. a connecting portion; 1151. hole site; 1152. a guide surface; 116. an annular projection; 12. a cover body; 121. a through hole; 122. an exhaust passage; 123. an abutting portion; 1231. a flow channel; 124. an annular groove; 13. an accommodating cavity;

2. a membrane;

3. a push rod;

4. a deflector rod assembly; 41. a deflector rod; 411. a shaft body; 42. an elastic member.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As described in the background art, in the prior art, the diaphragm is prone to be turned over at a large angle in the process of multiple reciprocating motions, so that the diaphragm cannot reliably block the air outlet of the air inlet connection pipe.

In order to solve the above problem, an embodiment of the present invention provides a hanger valve, referring to fig. 1 to 4, including a valve body 1, a diaphragm 2, a push rod 3, and a lever assembly 4. The valve body 1 is provided with a containing cavity 13, one end of the valve body 1 is provided with an air inlet connecting pipe 111 and an air outlet connecting pipe 112 which are respectively communicated with the containing cavity 13, the air inlet connecting pipe 111, the containing cavity 13 and the air outlet connecting pipe 112 are sequentially communicated to form an air flow passage, and the other end of the valve body 1 is provided with a through hole 121 communicated with the containing cavity 13. The membrane 2 is disposed in the accommodating cavity 13. The push rod 3 penetrates through the through hole 121, and the push rod 3 moves along the axial direction when being subjected to external force and presses the membrane 2 against the air outlet of the air inlet connecting pipe 111, so that the air flow passage is disconnected. After the push rod 3 is removed by external force, the diaphragm 2 can be separated from the air outlet of the air inlet connecting pipe 111 under the action of air in the air inlet connecting pipe 111, so that the air flow passage is communicated. The deflector rod assembly 4 is mounted on the valve body 1, and the deflector rod assembly 4 is used for applying external force to the push rod 3 so as to enable the push rod 3 to move along the axial direction of the through hole 121. When the airflow path is cut off, the distance between one end of the accommodating cavity 13 communicated with the through hole 121 and the diaphragm 2 is less than or equal to 0.7mm.

In this application embodiment, when the push rod 3 is subjected to an external force, the axial movement can press the diaphragm 2 against the air outlet of the air inlet connection pipe 111, and when the external force on the push rod 3 is removed, the air in the air inlet connection pipe 111 can push the diaphragm 2 open so that the diaphragm 2 is separated from the air outlet of the air inlet connection pipe 111. That is, the diaphragm 2 can reciprocate in the accommodating chamber 13 under the action of the gas pressure in the push rod 3 and the gas inlet connection pipe 111. When the airflow passage is disconnected, the distance between one end of the accommodating cavity 13 communicated with the through hole 121 and the membrane 2 is less than or equal to 0.7mm, and the accommodating cavity 13 can limit the turning angle of the membrane 2 in the movement process, so that the membrane 2 cannot be turned over at a large angle in the movement process. Even if the diaphragm 2 is turned over at a small angle in the moving process, after the diaphragm 2 abuts against one end of the accommodating cavity 13 facing the air inlet connecting pipe 111 or one end of the accommodating cavity 13 facing the through hole 121, the wall surface of the accommodating cavity 13 can push the diaphragm 2 to turn back to the initial state. Therefore, the diaphragm 2 does not turn over at a large angle in the process of repeated reciprocating motion, and the blocking effect of the diaphragm 2 on the air outlet of the air inlet connecting pipe 111 is ensured.

In addition, the stores pylon valve that this embodiment provided's volume is less, can directly pass through the fastener fastening on the mount seat, does not need the installation of purpose-made mounting supplementary stores pylon valve, is favorable to installing the stores pylon valve on the mount seat. In some existing rack valves, the valve core reciprocates in the accommodating chamber 13 to control the communication state of the airflow passage, and a sealing ring is sleeved on the valve core to seal a gap between the valve core and the accommodating chamber 13. On one hand, the assembly precision requirement of the valve core is high, and on the other hand, the friction force between the valve core and the valve body 1 is large, and the shifting rod assembly 4 can enable the valve core to move only by applying large external force to the valve core, so that a worker can enable the shifting rod assembly 4 to cancel the external force applied to the valve core only by using a pneumatic mobile phone to support and press the shifting rod assembly 4 with large acting force. On one hand, the hanger valve provided by the embodiment only needs to put the diaphragm 2 into the accommodating cavity 13 of the valve body 1, the assembly precision requirement of the diaphragm 2 is low, and the hanger valve is convenient to assemble; on the other hand, the frictional force between diaphragm 2 and the valve body 1 is less, and push rod 3 only needs to exert less external force to diaphragm 2 and can promote the motion of diaphragm 2, and the staff only needs to use pneumatic cell-phone to support with less effort and presses driving lever subassembly 4 and can make driving lever subassembly 4 cancel the external force of exerting on push rod 3, has improved the use of stores pylon valve and has experienced.

It is worth mentioning that the air inlet connecting pipe 111 is used for connecting an external air source, the air outlet connecting pipe 112 is used for connecting a triple diaphragm valve of the instrument desk, when the pneumatic mobile phone is pressed against the shift lever assembly 4 of the hanger valve, the shift lever assembly 4 cancels external force applied on the push rod 3, the pressure of air in the air inlet connecting pipe 111 pushes the diaphragm 2 to drive the push rod 3 to move towards the direction far away from the air inlet connecting pipe 111, at the moment, air provided by the external air source can flow into the triple diaphragm valve through the air flow passage, and the triple diaphragm valve cuts off the air circuit of the pneumatic mobile phone when receiving the air provided by the external air source. When the air-powered mobile phone opens the deflector rod assembly 4 of the hanger valve, the deflector rod assembly 4 applies external force to the push rod 3, at the moment, one end of the push rod 3, facing the air inlet connecting pipe 111, extends out of the through hole 121 and pushes the diaphragm 2 to move towards the air inlet connecting pipe 111 and plug the air outlet end of the air inlet connecting pipe 111, the air flow path is in a disconnected state, air provided by an external air source cannot enter the triple diaphragm valve, the air path of the air-powered mobile phone is in a connected state, and when a worker steps on a pedal, the air-powered mobile phone can normally work.

Illustratively, the air inlet connecting pipe 111 and the air outlet connecting pipe 112 are arranged on the valve body 1 in parallel and at a spacing, and in a possible implementation mode, the axis of the push rod 3, the center of the membrane 2 and the axis of the air inlet connecting pipe 111 are positioned on the same straight line. The shape of the membrane 2 may be circular, rectangular or other suitable shapes, which are not limited herein.

For example, when the air flow path is broken, the distance between the end of the accommodating chamber 13 communicating with the through hole 121 and the diaphragm 2 may be 0.5mm. Further, when the airflow path is disconnected, the distance between the end of the accommodating cavity 13 communicated with the through hole 121 and the diaphragm 2 may be set to 0.1mm, and the distance is set to 0.1mm, which is shorter than 0.5mm, so that the diaphragm 2 is not turned over by a large angle in the moving process. In addition, when the push rod 3 pushes the diaphragm 2 to move towards the direction close to the air inlet connection pipe 111, the contact part of the diaphragm 2 and the push rod 3 can generate elastic deformation, and after the diaphragm 2 abuts against the air outlet of the air inlet connection pipe 111, the diaphragm 2 resets under the action of self elastic force. Set up the one end that holds chamber 13 and through-hole 121 intercommunication and the distance between diaphragm 2 for 0.1mm compare in 0.5mm, the space that diaphragm 2 warp is littleer, can reset more soon after diaphragm 2 offsets with the gas outlet of admitting air takeover 111, is favorable to improving the sensitivity of stores pylon valve.

In an embodiment, referring to fig. 1 to 4, as a specific implementation of the rack valve provided in the embodiment of the present application, the valve body 1 includes a housing 11 and a cover 12 covering the housing 11, the air inlet pipe 111 and the air outlet pipe 112 are respectively disposed on the housing 11, and the through hole 121 is disposed on the cover 12.

The cover 12 may be fixed to the housing 11 by an appropriate method such as adhesion, fastening, or snap-fit connection, which is not limited herein. Fig. 2 shows that the cover 12 is provided with a cylinder body communicated with the accommodating cavity 13, and a through hole 121 on the cover 12 is defined by the inner wall of the cylinder body.

This structure can prescribe a limit to the holding chamber 13 of valve body 1 through casing 11 and lid 12, and the assembly of the rack valve of being convenient for is specific, sets up diaphragm 2 in casing 11, covers lid 12 and establishes on casing 11 and fix with casing 11 and can accomplish the assembly of diaphragm 2.

In an embodiment, referring to fig. 1 to 5, as an embodiment of the hanger valve provided in the present application, the membrane 2 is an elastic membrane, a supporting portion 113 is protruded from a bottom wall of the housing 11 located in the accommodating cavity 13, the supporting portion 113 has a channel 1131 communicating the air inlet pipe 111 and the air outlet pipe 112, and the supporting portion 113 is used for supporting an edge position of a side of the membrane 2 facing the air inlet pipe 111.

Wherein, diaphragm 2 can use elastic material to make, can take place elastic deformation when diaphragm 2 receives external force, and after external force disappeared, diaphragm 2 resumes initial shape under self elasticity effect.

In a possible implementation manner, the supporting portion 113 may be a protruding rib protruding from the bottom wall of the accommodating cavity 13, and the shape of the protruding rib may match with the shape of the membrane 2, for example, when the shape of the membrane 2 is circular, the protruding rib is disposed in an arc shape at the bottom of the accommodating cavity 13. The two ends of the rib have a space therebetween, and the space can be used as a channel 1131 for connecting the air inlet connecting pipe 111 and the air outlet connecting pipe 112. In another possible implementation manner, the supporting portion 113 includes a plurality of protrusions, the plurality of protrusions are arranged at intervals on the bottom wall of the accommodating cavity 13, and the intervals between adjacent protrusions are used as channels 1131 for connecting the air inlet connecting pipe 111 and the air outlet connecting pipe 112.

It should be noted that when the supporting portion 113 abuts against the diaphragm 2 and the push rod 3 presses the diaphragm 2 under the action of external force, the position of the diaphragm 2 facing the push rod 3 may extend toward the air inlet pipe 111 and block the air outlet of the air inlet pipe 111. When the external force on the push rod 3 is removed, the diaphragm 2 recovers the original shape under the action of the gas pressure in the gas inlet connection pipe 111 and the self elastic force, and the diaphragm 2 moves in the direction away from the gas inlet connection pipe 111 under the action of the gas pressure in the gas inlet connection pipe 111 after recovering the original shape.

In this embodiment, the housing 11 supports the diaphragm 2 through the supporting portion 113, and the diaphragm 2 extends into an arc shape toward the air inlet connection pipe 111 and blocks the air outlet of the air inlet connection pipe 111, which is beneficial to improving the blocking effect of the diaphragm 2 on the air outlet of the air inlet connection pipe 111. In addition, after the external force on the push rod 3 is removed and the diaphragm 2 recovers the original shape, the supporting portion 113 can increase the contact area between the diaphragm 2 and the gas introduced into the gas inlet connection pipe 111, so that the gas introduced into the gas inlet connection pipe 111 can more easily push the diaphragm 2 to move.

In a more specific embodiment, referring to fig. 2 to 6, as an embodiment of the hanger valve provided in the embodiment of the present application, a gap for forming the exhaust passage 122 is provided between the through hole 121 and the push rod 3. When the membrane 2 seals the air outlet of the air inlet connecting pipe 111, the air outlet connecting pipe 112 is communicated with the air outlet passage 122. After the external force on the push rod 3 is removed, the diaphragm 2 is pressed against one end of the through hole 121 facing the accommodating cavity 13 under the action of the gas in the gas inlet connecting pipe 111 to seal the gas outlet passage 122.

In one possible implementation, the cross-sectional shape of the through-hole 121 is the same as the cross-sectional shape of the push rod 3, and the cross-sectional area of the through-hole 121 is larger than the cross-sectional area of the push rod 3, so that a gap as the exhaust passage 122 is formed between the through-hole 121 and the push rod 3.

In another possible implementation, the cross-sectional shape of the push rod 3 is different from the cross-sectional shape of the through hole 121, and a gap as the exhaust passage 122 has been formed between the through hole 121 and the push rod 3. For example, as shown in fig. 2, the cross-sectional shape of the through hole 121 is substantially triangular, the cross-sectional shape of the plunger 3 is circular, and after the plunger 3 is inserted into the through hole 121, the exhaust passage 122 is formed at each corner position of the through hole 121. In other embodiments, the cross-sectional shape of the push rod 3 may be set to be circular, the cross-sectional shape of the through hole 121 may be set to be oval, or the cross-sectional shape of the push rod 3 may be set to be polygonal, the cross-sectional shape of the through hole 121 may be set to be circular, etc., without being limited thereto.

Illustratively, when the air outlet of air inlet adapter 111 is sealed, diaphragm 2 has a gap with cover 12, so that air outlet adapter 112 is communicated with air outlet passage 122.

This structure, after external force on push rod 3 cancels, diaphragm 2 is with through-hole 121 towards the one end shutoff of holding chamber 13, avoids the gas in the air current path to reveal from exhaust passage 122, guarantees the reliable operation with the trigeminy diaphragm valve that takeover 112 links to each other of giving vent to anger. After the diaphragm 2 blocks the air outlet of the air inlet connecting pipe 111, the air in the air outlet connecting pipe 112 and the pipeline connecting the air outlet connecting pipe 112 and the triple diaphragm valve can be discharged from the exhaust channel 1131, so that the influence of the part of air on the triple diaphragm valve is avoided. In addition, when the through hole 121 is different from the push rod 3 in shape, the through hole 121 can also play a guiding role for the push rod 3, and the push rod 3 is prevented from shaking in the reciprocating motion process.

In a further specific embodiment, referring to fig. 3 to fig. 6, as a specific implementation of the hanger valve provided in the embodiment of the present application, the cover 12 is provided with an abutting portion 123 at an outer side of the through hole 121, one surface of the diaphragm 2 facing the air inlet connection pipe 111 abuts against the supporting portion 113, one surface of the diaphragm 2 facing the through hole 121 abuts against the abutting portion 123, the abutting portion 123 abuts against an edge position of the diaphragm 2, and the abutting portion 123 is provided with a flow passage 1231 for flowing an air flow.

For example, when the shape of the diaphragm 2 is circular, the abutting portion 123 may be an annular boss provided on the cover 12, the circular boss abutting against an edge position of the diaphragm 2. It can be understood that when the supporting portion 113 and the abutting portion 123 respectively abut against the diaphragm 2, the diaphragm 2 does not move relative to the housing 11, and at this time, the diaphragm 2 closes the air outlet of the air inlet connecting pipe 111 or opens the air outlet of the air inlet connecting pipe 111 through its elastic deformation. Where the number of flow passages 1231 on the abutment 123 is non-limiting, for example, as shown in fig. 6, the number of flow passages 1231 may be set to seven, and seven flow passages 1231 are arranged in an annular array on the abutment 123.

In this embodiment, the diaphragm 2 does not move relative to the housing 11 in the process of plugging or opening the air outlet of the air inlet connection pipe 111, so that the diaphragm 2 is prevented from tilting in the process of moving, and the plugging effect of the diaphragm 2 on the air outlet of the air inlet connection pipe 111 and the through hole 121 is ensured. Specifically, the diaphragm 2 may extend toward the air inlet connection tube 111 under the action of the push rod 3 and block the air outlet of the air inlet connection tube 111. When the external force on the push rod 3 is removed, the diaphragm 2 can extend towards the through hole 121 under the action of the gas pressure in the air inlet connecting pipe 111 and block the exhaust passage. The abutting portion 123 is provided with a flow passage 1231, and when the diaphragm 2 blocks the outlet of the inlet connection pipe 111, the gas in the outlet connection pipe 112 can flow out of the exhaust passage 122 through the flow passage 1231.

In an embodiment, referring to fig. 2 and 5, as a specific implementation of the hanger valve provided in the embodiment of the present application, a plurality of limiting portions 114 are convexly disposed on the side wall of the housing 11 located in the accommodating cavity 13 at intervals, and each limiting portion 114 abuts against the outer peripheral surface of the diaphragm 2.

As an example, a stopper rib may be used as the stopper portion 114, and when the shape of the diaphragm 2 is a circle, a plurality of stopper ribs may be arranged in an annular array on the housing 11.

In this embodiment, the housing 11 abuts against the outer peripheral surface of the diaphragm 2 through the plurality of limiting portions 114, so that the housing 11 can limit the moving direction of the diaphragm 2 and prevent the diaphragm 2 from shifting during the reciprocating movement. In addition, the friction between the diaphragm 2 and the shell 11 is small, so that a worker does not need to use a pneumatic mobile phone to press the deflector rod assembly 4 with large acting force, and the use experience of the hanger valve is improved.

In an embodiment, please refer to fig. 2 and 5, as a specific implementation manner of the hanger valve provided in the embodiment of the present application, the lever assembly 4 includes a lever 41 and an elastic member 42 connected between the lever 41 and the housing 11, a shaft 411 is disposed on the lever 41, two connection portions 115 are disposed on the housing 11 at an interval, each connection portion 115 is provided with a hole 1151 into which a corresponding end of the shaft 411 extends, and at least one connection portion 115 is provided with a guide surface 1152 for guiding an end of the shaft 411 to the hole 1151.

Specifically, the position of the shift lever 41 near the first end is hinged to the housing 11, and when the pneumatic handpiece presses against the second end of the shift lever 41, the first end of the shift lever 41 rotates in a direction away from the push rod 3, so as to release the external force applied to the push rod 3. The elastic element 42 is used for driving the first end of the shift lever 41 to rotate towards the direction close to the push rod 3, when the pneumatic mobile phone is separated from the second end of the shift lever 41, the first end of the shift lever 41 pushes the push rod 3 to move towards the accommodating cavity 13 under the elastic force of the elastic element 42, and the push rod 3 presses the diaphragm 2 so that the diaphragm 2 blocks the air outlet of the air inlet connection pipe 111. As the elastic member 42, a torsion spring may be used, and the torsion spring is sleeved on the shaft 411, and one end of the torsion spring is connected to the housing 11, and the other end of the torsion spring is connected to the shift lever 41.

Illustratively, two connecting portion 115 are located the relative both sides of diaphragm 2 respectively, and the axis body 411 on the driving lever 41 includes the big diameter section and the little diameter section of coaxial setting, and the position department of being connected at big diameter section and little diameter section forms the step portion, and the hole site 1151 rotates in being used for stretching into connecting portion 115's hole site 1151 relatively in the little diameter section, and step portion on the axis body 411 offsets with connecting portion 115. The guide surface may be provided on each of the two connecting portions 115, or on only one of the connecting portions 115.

In this embodiment, the shift lever 41 is configured to rotate relative to the housing 11 under the action of the pneumatic handpiece and the elastic force of the elastic member 42, and is configured to apply or cancel the external force applied to the push rod 3. The guide surface facilitates the end of the shaft body 411 to extend into the hole 1151 of the connecting portion 115 during the assembly process of the hanger valve, thereby improving the assembly efficiency of the hanger valve.

In an embodiment, referring to fig. 2 to fig. 6, as a specific implementation of the hanger valve provided in the embodiment of the present application, an annular protrusion 116 is protruded from an end surface of the housing 11 away from the air inlet pipe 111, and an annular groove 124 into which the annular protrusion 116 extends is formed on the cover 12. Wherein, the annular protrusion 116 is located at the edge position of the accommodating cavity 13, and can be disposed on the housing 11 through a one-step molding process.

In other embodiments, the annular protrusion 116 may be disposed on the cover 12, and correspondingly, an annular groove 124 into which the annular protrusion 116 extends is formed on the housing 11.

In this embodiment, the annular protrusion 116 and the annular groove 124 can realize mutual positioning between the housing 11 and the cover 12, prevent the cover 12 from moving relative to the housing 11, and improve the alignment accuracy and the assembly efficiency between the housing 11 and the cover 12.

In a specific embodiment, as a specific implementation of the pylon valve provided in the embodiment of the present application, the housing 11, the air inlet pipe 111, and the air outlet pipe 112 are formed as a single piece by injection molding, and the annular protrusion 116 and the annular groove 124 are fixed by welding. Illustratively, the annular protrusion 116 and the annular groove 124 may be secured by ultrasonic welding.

In the existing pylon valve, the air inlet connecting pipe 111, the air outlet connecting pipe 112 and the housing 11 are separate components, the air inlet connecting pipe 111 and the air outlet connecting pipe 112 are respectively fixed on the housing 11 in a threaded connection manner, after the housing 11 is respectively connected with the air inlet connecting pipe 111 and the air outlet connecting pipe 112, sealant needs to be arranged at the connection position, and the pylon valve is slow in assembly efficiency. The pylon valve provided by the embodiment does not need to be provided with the air inlet connecting pipe 111 and the air outlet connecting pipe 112 separately, so that the assembly efficiency of the pylon valve is improved. In addition, after the injection molding of the shell 11, no burr or residual scraps or the like are formed in the accommodating cavity 13, so that the membrane 2 is prevented from being scratched by the burr or the residual scraps or the like, and the service life of the hanger valve is ensured. The annular protrusion 116 and the annular groove 124 are fixed in a welding mode, so that the reliability of connection between the shell 11 and the cover 12 is guaranteed, meanwhile, the process of connection between the shell 11 and the cover 12 is fast, and the assembly efficiency of the hanger valve is further improved.

The embodiment of the application also provides an instrument table, which comprises a hanging frame seat for placing the pneumatic mobile phone and a hanging frame valve provided by any embodiment, wherein the hanging frame valve is arranged on the hanging frame seat, and when the pneumatic mobile phone is placed on the hanging frame seat, the pneumatic mobile phone is pressed against the deflector rod assembly 4 to cancel the external force applied to the push rod 3 so as to communicate the airflow channel; when the pneumatic mobile phone is separated from the hanging frame seat, the deflector rod component 4 applies external force to the push rod 3 to break the airflow channel. This structure adopts the apparatus platform of above-mentioned stores pylon valve, because the difference between the thickness of the height of holding chamber 13 and diaphragm 2 is less than or equal to 0.7mm, the upset of great angle can not take place for diaphragm 2 in the stores pylon valve at the in-process of motion, has guaranteed the shutoff effect of diaphragm 2 to the gas outlet of intake adapter 111. When the use frequency of the pneumatic mobile phone is high, the instrument table adopting the hanger valve can still reliably control the on-off of the air channel of the pneumatic mobile phone.

The present application is intended to cover various modifications, equivalent arrangements, and adaptations, which may be made within the spirit and scope of the present application.

Claims

1. A hanger valve, comprising:

the valve comprises a valve body with an accommodating cavity, wherein one end of the valve body is provided with an air inlet connecting pipe and an air outlet connecting pipe which are respectively communicated with the accommodating cavity, the air inlet connecting pipe, the accommodating cavity and the air outlet connecting pipe are sequentially communicated to form an air flow passage, and the other end of the valve body is provided with a through hole communicated with the accommodating cavity;

the membrane is arranged in the accommodating cavity;

the push rod penetrates through the through hole, moves along the axial direction when being subjected to external force and enables the diaphragm to be pressed against the air outlet of the air inlet connecting pipe so as to cut off the air flow passage; after the external force is removed by the push rod, the diaphragm can be separated from the air outlet of the air inlet connecting pipe under the action of air in the air inlet connecting pipe, so that the air flow passage is communicated;

2. A hanger valve according to claim 1 wherein said valve body comprises a housing and a cover covering said housing, said inlet and outlet nozzles being disposed on said housing, respectively, said through-hole being disposed in said cover.

3. A hanger valve according to claim 2 wherein said diaphragm is a flexible membrane, and a support portion is provided on the bottom wall of said housing in said receiving chamber, said support portion having a passage for communicating said inlet nozzle with said outlet nozzle, said support portion being adapted to support an edge of a face of said diaphragm facing said inlet nozzle.

4. A hanger valve according to claim 3 wherein a gap is provided between said through hole and said push rod for forming an exhaust passage, said air outlet pipe is in communication with said exhaust passage when said diaphragm blocks the air outlet of said air inlet pipe, and said diaphragm is pressed against an end of said through hole facing said receiving chamber by the gas in said air inlet pipe to block said exhaust passage when the external force on said push rod is removed.

5. A hanger valve according to claim 4 wherein said cover is provided with an abutment portion at an outer side of said through hole, a surface of said diaphragm facing said inlet pipe abuts against said support portion, a surface of said diaphragm facing said through hole abuts against said abutment portion, and said abutment portion abuts against an edge of said diaphragm, and said abutment portion is provided with a flow passage through which an air flow passes.

6. A hanger valve according to claim 2 wherein the side wall of the housing in the receiving chamber is provided with a plurality of spaced raised limiting portions, each of which abuts the peripheral surface of the diaphragm.

7. A hanger valve according to any one of claims 2 to 6 wherein said lever assembly includes a lever and an elastomeric member connected between said lever and said housing, said lever having a shaft, said housing having two spaced apart connection portions, each of said connection portions having an aperture into which a respective end of said shaft extends, at least one of said connection portions having a guide surface for guiding an end of said shaft into said aperture.

8. A hanger valve according to any one of claims 2 to 6 wherein an annular projection is provided on the end face of the housing remote from the inlet nozzle, and an annular groove is provided in the lid into which the annular projection extends.

9. Hanger valve according to claim 8, wherein the housing, the inlet connector and the outlet connector are formed in one piece by injection moulding, the annular projection being fixed to the annular groove by welding.

10. An instrument table, comprising a hanger seat for placing a pneumatic handpiece and a hanger valve according to any one of claims 1 to 9, said hanger valve being mounted on said hanger seat, said pneumatic handpiece, when placed on said hanger seat, pressing against said toggle assembly to cancel the external force applied to said push rod and thereby cause said air flow path to communicate; when the pneumatic mobile phone is separated from the hanger seat, the deflector rod component applies external force to the push rod to disconnect the airflow channel.