Low pressure balanced bidirectional valve

Abstract

The present application relates to a kind of low pressure balance bidirectional valves, including shell and valve core, valve core is arranged in shell, one end of shell is equipped with screw cap, the other end of shell is equipped with locking sleeve, first through-hole and second through-hole are equipped on valve core, first rubber pad is equipped on one side of valve core, second rubber pad is equipped on the other side of valve core;The advantages of the present application are: when the left side of shell is higher than the right side of shell, the pressure difference opens second rubber pad and realizes left and right pressure balance, when the right side of shell is higher than the left side of shell, the pressure difference opens first rubber pad and realizes left and right pressure balance, so that the whole low pressure balance bidirectional valve can adapt to different external air pressure change, second, because first rubber pad and second rubber pad will be blocked first through-hole and second through-hole respectively, rain and moisture are blocked by first rubber pad and second rubber pad respectively, to realize rainproof, moisture-proof, to solve the problem that rainproof, moisture-proof function and low pressure difference air pressure balance function in falling connector are mutually contradictory.

Description

Technical Field

[0001] This invention relates to a low-pressure balanced bidirectional valve. Background Technology

[0002] Drop-out connectors are commonly used electrical interfaces. To adapt to the requirements of the usage environment, drop-out connectors have functions such as rainproof and moisture-proof. That is, through the sealing ring and other structures, the mating surface is formed into a sealed cavity to ensure that the signal transmission is not affected by the external environment.

[0003] During use or testing, the detachable connector is often exposed to a high-pressure gas environment. Since the mating surface is a sealed cavity under atmospheric pressure, the pressure difference between the inside and outside can increase the separation force, potentially leading to failure to separate properly in extreme cases. After testing, the detachable connector returns to atmospheric pressure. If the mating surface has achieved pressure equilibrium with the high-pressure environment, depressurization of the mating surface is necessary to achieve connector separation. Therefore, existing detachable connectors cannot simultaneously meet the requirements of rain and moisture protection while adapting to changes in external air pressure; these two aspects are contradictory. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the detached connector in the prior art cannot achieve air pressure balance on both sides. It proposes a low-pressure balanced two-way valve, which can block and open both sides of the air intake channel through the first rubber pad and the second rubber pad. It can not only achieve the functions of rainproof and moistureproof, but also achieve the balance of air pressure on the left and right sides.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a low-pressure balanced bidirectional valve, comprising a housing and a valve core, wherein the valve core is disposed within the housing, a nut is provided at one end of the housing, a locking sleeve is provided at the other end of the housing, a top sleeve is provided inside the locking sleeve, and a spring is provided between the top sleeve and the housing, the valve core is provided with a first through hole and a second through hole, a first rubber pad is provided on one side of the valve core to block the first through hole, one end of the first rubber pad is fixedly connected to the valve core, and the other end of the first rubber pad is tightly fitted to the valve core, a second rubber pad is provided on the other side of the valve core to block the second through hole, one end of the second rubber pad is fixedly connected to the valve core, and the other end of the second rubber pad is tightly fitted to the valve core, and a third through hole is provided on the locking sleeve, the top sleeve, the housing, and the nut, wherein when the air pressure on the left side of the housing is higher than the air pressure on the right side, the air pressure difference pushes open the second rubber pad to achieve left and right air pressure balance, and when the air pressure on the right side of the housing is higher than the air pressure on the left side, the air pressure difference pushes open the first rubber pad to achieve left and right air pressure balance.

[0006] Preferably, the valve core is provided with a threaded through hole, the first rubber pad is provided with an interference fit first screw, the first screw is fixedly connected to one end of the threaded through hole, and the second rubber pad is provided with an interference fit second screw, the second screw is fixedly connected to the other end of the threaded through hole.

[0007] Preferably, the outer wall of the locking sleeve is provided with a steel ball, and the outer wall of the top sleeve is provided with an arc portion, through which the steel ball is pushed out of the locking sleeve.

[0008] Preferably, the inner wall of the locking sleeve is provided with a step that abuts against the top sleeve.

[0009] Preferably, the outer wall of the locking sleeve is provided with a boss, and the boss and the locking sleeve are an integral structure.

[0010] Preferably, a first sealing ring is provided on the outer wall of the valve core.

[0011] Preferably, a second sealing ring is provided on the outer side wall of the housing.

[0012] Preferably, the nut includes a connecting section connected to the housing and an abutting section abutting against the end of the housing, wherein the connecting section and the abutting section are integrally formed.

[0013] Preferably, the housing has a threaded hole, and the outer wall of the connecting section has an external thread that mates with the threaded hole.

[0014] Preferably, the abutting section has a chamfer.

[0015] In summary, the advantages of this invention are as follows: By using a first rubber pad and a second rubber pad on both sides of the valve core to seal the first and second through holes respectively, and because one end of the first rubber pad is fixedly connected to the valve core and the other end of the first rubber pad is tightly fitted to the valve core, when the air pressure on the left side of the housing is higher than the air pressure on the right side, the air pressure difference pushes open the second rubber pad to achieve left and right air pressure balance. When the air pressure on the right side of the housing is higher than the air pressure on the left side, the air pressure difference pushes open the first rubber pad to achieve left and right air pressure balance. Therefore, the entire low-pressure balanced bidirectional valve can adapt to different external air pressure changes. Secondly, when the air pressure on both sides is balanced, because the first rubber pad and the second rubber pad will seal the first and second through holes respectively, rainwater and moisture are blocked by the first rubber pad and the second rubber pad respectively, thereby achieving rainproof and moistureproof functions. This solves the problem of the contradiction between the rainproof and moistureproof functions and the low-pressure difference air pressure balance function in the detachable connector. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a low-pressure balanced bidirectional valve according to the present invention;

[0018] Figure 2 This is a schematic diagram of the valve core structure in this invention;

[0019] Figure 3 This is a schematic diagram of the structure of the first rubber pad in this invention;

[0020] Figure 4 This is a schematic diagram of the nut structure in this invention;

[0021] Figure 5 This is a schematic diagram of the second rubber pad in this invention when it is opened;

[0022] Figure 6 This is a schematic diagram of the first rubber pad in this invention when it is opened;

[0023] Figure 7 This is a schematic diagram showing the initial installation of a low-pressure balanced bidirectional valve and a connecting sleeve according to the present invention;

[0024] Figure 8 This is a schematic diagram of the installation process of a low-pressure balanced bidirectional valve and a connecting sleeve according to the present invention;

[0025] Figure 9 This is a schematic diagram of the structure of a low-pressure balanced bidirectional valve of the present invention installed in a connecting sleeve.

[0026] Figure label:

[0027] 1. Housing, 2. Valve core, 21. First through hole, 22. Second through hole, 23. First rubber pad, 24. Second rubber pad, 25. Threaded through hole, 26. First screw, 27. Second screw, 3. Nut, 31. Connecting section, 32. Abutting section, 33. Chamfer, 4. Locking sleeve, 41. Steel ball, 42. Step, 43. Boss, 5. Top sleeve, 51. Arc part, 6. Spring, 7. Third through hole, 8. First sealing ring, 9. Second sealing ring, 10. Connecting sleeve. Detailed Implementation

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, a low-pressure balanced bidirectional valve includes a housing 1 and a valve core 2. The valve core 2 is disposed inside the housing 1. One end of the housing 1 is provided with a nut 3, and the other end of the housing 1 is provided with a locking sleeve 4. A top sleeve 5 is provided inside the locking sleeve 4. A spring 6 is provided between the top sleeve 5 and the housing 1. The valve core 2 is provided with a first through hole 21 and a second through hole 22. A first rubber gasket 23 is provided on one side of the valve core 2 to block the first through hole 21. One end of the first rubber gasket 23 is fixedly connected to the valve core 2, and the other end of the first rubber gasket 23 is tightly fitted to the valve core 2. The other side of the valve core 2 is provided with... A second rubber pad 24 is provided to block the second through hole 22. One end of the second rubber pad 24 is fixedly connected to the valve core 2, and the other end of the second rubber pad 24 is tightly fitted to the valve core 2. In this embodiment, both the first rubber pad 23 and the second rubber pad 24 are made of hard rubber and have a semi-circular structure. The locking sleeve 4, the top sleeve 5, the housing 1 and the nut 3 are all provided with a third through hole 7. When the air pressure on the left side of the housing 1 is higher than the air pressure on the right side, the air pressure difference pushes open the second rubber pad 24 to achieve left and right air pressure balance. When the air pressure on the right side of the housing 1 is higher than the air pressure on the left side, the air pressure difference pushes open the first rubber pad 23 to achieve left and right air pressure balance.

[0029] By sealing the first through hole 21 and the second through hole 22 with the first rubber pad 23 and the second rubber pad 24 respectively provided on both sides of the valve core 2, since one end of the first rubber pad 23 is fixedly connected to the valve core 2 and the other end of the first rubber pad 23 is tightly fitted to the valve core 2, and one end of the second rubber pad 24 is fixedly connected to the valve core 2 and the other end of the second rubber pad 24 is tightly fitted to the valve core 2, when the air pressure on the left side of the housing 1 is higher than the air pressure on the right side, the air pressure difference pushes open the second rubber pad 24 to achieve left and right air pressure balance. When the pressure on the left side is higher than the pressure on the right side, the pressure difference opens the first rubber pad 23 to achieve pressure balance between the left and right sides. This allows the entire low-pressure balance bidirectional valve to adapt to different external pressure changes. Secondly, when the pressure on both sides is balanced, the first rubber pad 23 and the second rubber pad 24 will block the first through hole 21 and the second through hole 22 respectively, so that rainwater and moisture are blocked by the first rubber pad 23 and the second rubber pad 24 respectively, thereby achieving rainproof and moistureproof, thus solving the problem of the contradiction between the rainproof and moistureproof functions and the low-pressure difference pressure balance function in the detachable connector.

[0030] The valve core 2 is provided with a threaded through hole 25. The first rubber pad 23 is provided with an interference fit first screw 26, which is fixedly connected to one end of the threaded through hole 25. The second rubber pad 24 is provided with an interference fit second screw 27, which is fixedly connected to the other end of the threaded through hole 25. The compression amount of the first rubber pad 23 and the second rubber pad 24 can be adjusted by the first screw 26 and the second screw 27 respectively, so as to achieve sealing under low pressure environment and also to seal the threaded through hole 25.

[0031] The outer wall of the locking sleeve 4 is provided with a steel ball 41, and the outer wall of the top sleeve 5 is provided with an arc portion 51. The steel ball 41 is pushed out of the locking sleeve 4 through the arc portion 51. The arc portion 51 makes the top sleeve 5 have a small diameter section and a large diameter section. During installation, if... Figure 8 As shown, use a finger or other rod-shaped object to pass through the third through hole 7 of the locking sleeve 4 and apply a rightward force to the top sleeve 5, overcoming the spring force of the spring 6, pushing the top sleeve 5 to the right. This force also acts as the installation force for the low-pressure balanced two-way valve. Under this force, the low-pressure balanced two-way valve enters the connecting sleeve 10. At this point, the small-diameter section of the top sleeve 5 is located at the position of the steel ball 41. The radial constraint of the steel ball 41 disappears, and it is squeezed into the locking sleeve 4 by the inner wall of the connecting sleeve 10, no longer protruding from the outer circle of the locking sleeve 4. When the two-way valve is installed in place, the steel ball 41 is located at the position of the annular groove in the connecting sleeve 10. At this point, the force is removed, and the top sleeve 5 returns to the left position under the action of the spring 6. The large-diameter section of the top sleeve 5 reaches the position of the steel ball 41, pushing the steel ball 41 into the annular groove, thus locking the low-pressure balanced two-way valve. Installation is complete as shown. Figure 9 As shown, this makes the entire low-pressure balanced two-way valve easy and quick to install, requiring no other tools and can be completed in one step.

[0032] The inner wall of the locking sleeve 4 has a step 42 that abuts against the top sleeve 5. The step 42 increases the contact area with the fixed sleeve and provides a certain limiting function for the top sleeve 5, ensuring the reset of the fixed sleeve. The outer wall of the locking sleeve 4 has a boss 43, which is an integral structure with the locking sleeve 4. The boss 43 provides a certain limiting function during installation, ensuring the reliability of the entire low-pressure balanced bidirectional valve installation. The outer wall of the valve core 2 has a first sealing ring 8, which ensures the sealing performance between the valve core 2 and the housing 1. In this embodiment, the first sealing ring 8 can also be installed on the inner wall of the housing 1, or on the inner wall of the housing 1 and the outer wall of the valve core 2, to meet different sealing requirements. The outer wall of the housing 1 has a second sealing ring 9, which ensures the sealing performance between the housing 1 and the connecting sleeve 10 after installation.

[0033] The nut 3 includes a connecting section 31 connected to the housing 1 and an abutting section 32 abutting against the end of the housing 1. The connecting section 31 and the abutting section 32 are integrally formed, enabling dual axial and radial fixation of the nut 3 to the housing 1, improving the connection quality between the nut 3 and the housing 1. Integrating the connecting section 31 and the abutting section 32 simplifies the installation process, increases the overall installation strength of the nut 3, and facilitates its processing. The housing 1 has a threaded hole, and the outer wall of the connecting section 31 has an external thread that mates with the threaded hole, enabling rapid installation and fixation of the nut 3. The threaded connection also improves the fixing quality of the nut 3. The abutting section 32 has a chamfer 33, which reduces stress concentration and facilitates the rapid installation of the entire low-pressure balanced bidirectional valve within the connecting sleeve 10. In this embodiment, the chamfer 33 can be a straight chamfer 33 or a circular arc chamfer 33.

[0034] like Figure 1 As shown, in the initial state, spring 6 pushes top sleeve 5 to the left. At this time, the large-diameter section of top sleeve 5 is located at the position of steel ball 41, pushing steel ball 41 out of the outer circle of locking sleeve 4; the installation process is as follows. Figure 7 As shown, the outer diameter of the two-way valve is less than the inner diameter of the connecting sleeve 10, the protrusion height of the steel ball 41 is less than the radius of the annular groove inside the connecting sleeve 10. During installation, as follows... Figure 8 As shown, use a finger or other rod-shaped object to pass through the third through hole 7 of the locking sleeve 4 and apply a rightward force to the top sleeve 5, overcoming the spring force of the spring 6, pushing the top sleeve 5 to the right. This force also acts as the installation force for the low-pressure balanced two-way valve. Under this force, the low-pressure balanced two-way valve enters the connecting sleeve 10. At this point, the small-diameter section of the top sleeve 5 is located at the position of the steel ball 41. The radial constraint of the steel ball 41 disappears, and it is squeezed into the locking sleeve 4 by the inner wall of the connecting sleeve 10, no longer protruding from the outer circle of the locking sleeve 4. When the two-way valve is installed in place, the steel ball 41 is located at the position of the annular groove in the connecting sleeve 10. At this point, the force is removed, and the top sleeve 5 returns to the left position under the action of the spring 6. The large-diameter section of the top sleeve 5 reaches the position of the steel ball 41, pushing the steel ball 41 into the annular groove, thus locking the low-pressure balanced two-way valve. Installation is complete as shown. Figure 9 As shown. When disassembly is required, simply push down the top sleeve 5 with your finger while simultaneously hooking the locking sleeve 4 inside and applying force to the left to remove it; or you can use the connecting mechanism of the detachable plug to lock it with the locking sleeve 4 and remove the low-pressure balanced two-way valve.

[0035] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A low-pressure balanced bidirectional valve, characterized in that: The device includes a housing and a valve core. The valve core is disposed within the housing. One end of the housing is provided with a nut, and the other end of the housing is provided with a locking sleeve. A top sleeve is provided inside the locking sleeve, and a spring is provided between the top sleeve and the housing. The valve core has a first through hole and a second through hole. One side of the valve core is provided with a first rubber pad that blocks the first through hole. One end of the first rubber pad is fixedly connected to the valve core, and the other end of the first rubber pad is tightly fitted to the valve core. The other side of the valve core is provided with a second rubber pad that blocks the second through hole. One end of the second rubber pad is fixedly connected to the valve core, and the other end of the second rubber pad is tightly fitted to the valve core. The locking sleeve, the top sleeve, the housing, and the nut are all provided with a third through hole. When the air pressure on the left side of the housing is higher than the air pressure on the right side, the air pressure difference pushes open the second rubber pad to achieve left and right air pressure balance. When the air pressure on the right side of the housing is higher than the air pressure on the left side, the air pressure difference pushes open the first rubber pad to achieve left and right air pressure balance. The low-pressure balanced bidirectional valve is installed in an external connecting sleeve. A steel ball is provided on the outer wall of the locking sleeve, and an arc portion is provided on the outer wall of the top sleeve. The steel ball is pushed out of the locking sleeve through the arc portion to lock the low-pressure balanced bidirectional valve with the connecting sleeve. An annular groove that mates with the steel ball is provided in the connecting sleeve, and a boss is provided on the outer wall of the locking sleeve. The inner wall of the locking sleeve is provided with a step that abuts against the top sleeve. A through hole is defined on the inner side of the step. The diameter of the third through hole on the locking sleeve is smaller than the diameter of the through hole defined on the inner side of the step, and the diameter of the third through hole on the top sleeve is smaller than the diameter of the through hole defined on the inner side of the step.

2. The low-pressure balanced bidirectional valve according to claim 1, characterized in that: The valve core is provided with a threaded through hole, and the first rubber pad is provided with an interference fit first screw, which is fixedly connected to one end of the threaded through hole. The second rubber pad is provided with an interference fit second screw, which is fixedly connected to the other end of the threaded through hole.

3. The low-pressure balanced bidirectional valve according to claim 1, characterized in that: The boss and locking sleeve are an integral structure.

4. A low-pressure balanced bidirectional valve according to claim 1, characterized in that: A first sealing ring is provided on the outer wall of the valve core.

5. A low-pressure balanced bidirectional valve according to claim 1, characterized in that: A second sealing ring is provided on the outer wall of the housing.

6. A low-pressure balanced bidirectional valve according to claim 1, characterized in that: The nut includes a connecting section connected to the shell and an abutting section that abuts against the end of the shell, wherein the connecting section and the abutting section are integrally formed.

7. A low-pressure balanced bidirectional valve according to claim 6, characterized in that: The housing has a threaded hole, and the outer wall of the connecting section has an external thread that mates with the threaded hole.

8. A low-pressure balanced bidirectional valve according to claim 6, characterized in that: The abutment section is chamfered.

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