Direct insertion type pressure reducing valve with electromagnetic cut-off function

Abstract

The invention discloses a direct insertion type pressure reducing valve with an electromagnetic cut-off function, and relates to the technical field of pressure reducing valves, the direct insertion type pressure reducing valve comprises a valve body and an air inlet pipeline located in the valve body, a movable blocking piece is arranged in the air inlet pipeline, an air outlet hole with the diameter smaller than that of the air inlet pipeline is formed in the air outlet end of the air inlet pipeline, and the diameter of the blocking piece is larger than that of the air outlet hole; the blocking piece is provided with a blocking position and a ventilation position, the blocking piece is attached to the air outlet hole when the blocking piece is located at the blocking position, the blocking piece is away from the air outlet hole when the blocking piece is located at the ventilation position, a driving structure is arranged on the outer side of the valve body, and the driving end of the driving structure is located in the air inlet pipeline and abuts against the blocking piece. A communication module is arranged in the driving structure, the valve body can be remotely controlled to be switched on and switched off through the driving structure, in this way, the valve body can be switched off or switched on in time when a user is not around the valve body, and safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure reducing valves, and particularly relates to a direct-insert type pressure reducing valve with an electromagnetic cut-off function. Background Art

[0002] The direct-insert type gas pressure reducing valve stably reduces the high-pressure gas (such as natural gas, liquefied petroleum gas, etc.) from the upstream pipe network or storage tank to the safe pressure range required by downstream equipment, and plays an important role in the supporting of household gas appliances for reducing the output pressure and stabilizing the output pressure. It has the advantages of simple structure, stable pressure, light weight, convenient adjustment and installation, etc. However, due to its simple structure, the current direct-insert type pressure reducing valve does not have a remotely actuated drive structure to control the on and off of the direct-insert type pressure reducing valve, resulting in safety accidents if the user cannot manually cut off the direct-insert type pressure reducing valve in time. Summary of the Invention

[0003] In order to overcome the situation that the direct-insert type pressure reducing valve cannot be remotely controlled for on and off, the present invention aims to provide a direct-insert type pressure reducing valve with an electromagnetic cut-off function.

[0004] To achieve the above object, the present invention provides the following technical solution: A direct-insert type pressure reducing valve with an electromagnetic cut-off function, including a valve body and an intake pipe located inside the valve body. A movable blocking member is provided inside the intake pipe. An air outlet hole with a diameter smaller than that of the intake pipe is formed at the outlet end of the intake pipe. The diameter of the blocking member is larger than the diameter of the air outlet hole. The blocking member has a blocking position and a ventilation position. When the blocking member is in the blocking position, the blocking member fits on the air outlet hole. When the blocking member is in the ventilation position, the blocking member is away from the air outlet hole. A drive structure is provided on the outer side of the valve body. The drive end of the drive structure is located inside the intake pipe. The drive end of the drive structure abuts against the blocking member. A communication module is provided inside the drive structure.

[0005] As a further solution of the present invention: A sealing gasket is provided between the intake pipe and the air outlet hole. The side of the sealing gasket close to the blocking member is provided with an arc shape matching the blocking member.

[0006] As a further solution of the present invention: A limiting member is provided inside the intake pipe. The space between the limiting member and the sealing gasket forms a moving space for the blocking member to move.

[0007] As a further solution of the present invention: There is a pressure reducing cavity inside the valve body. The end of the air outlet hole is communicated with the pressure reducing cavity. An air outlet pipe is provided on the outer side of the valve body. The intake end of the air outlet pipe is communicated with the pressure reducing cavity.

[0008] As a further aspect of the present invention: A sealing member is provided inside the pressure reduction chamber. The sealing member is rotatably connected to the pressure reduction chamber. The end of the sealing member is located at the gas outlet end of the air outlet hole. The sealing member has an open position and a cut-off position. When the sealing member is in the open position, the sealing member releases the sealing of the air outlet hole. When the sealing member is in the cut-off position, the sealing member seals the gas outlet end of the air outlet hole. An elastic structure is provided inside the pressure reduction chamber, and the elastic structure is used to keep the sealing member in the cut-off position.

[0009] As a further aspect of the present invention: The elastic structure includes a metal spring piece located in the pressure reduction chamber. A connecting rod is provided on the metal spring piece. One end of the connecting rod is in contact with the sealing member. A return spring is provided in the pressure reduction chamber, and one end of the return spring abuts against the metal spring piece.

[0010] As a further aspect of the present invention: A moving member is provided on the valve body. A threaded hole is provided at a position corresponding to the moving member on the valve body. The moving member moves relatively by being threadedly connected to the threaded hole. The return spring is located in the threaded hole, and the end of the return spring away from the metal spring piece abuts against the moving member.

[0011] As a further aspect of the present invention: An opening is provided at one end of the sealing member away from the air outlet hole. One end of the connecting rod away from the metal spring piece passes through the opening and forms a limiting portion, and the limiting portion abuts against the sealing member.

[0012] As a further aspect of the present invention: A limiting plate for controlling the deformation of the metal spring piece is provided on one side of the metal spring piece.

[0013] As a further aspect of the present invention: The limiting member is a spring.

[0014] Compared with the prior art, the beneficial effects of the present technical solution are as follows: The on-off of the valve body can be remotely controlled through the driving structure, so that even if the user is not around the valve body, the valve body can be cut off or turned on in time, improving safety; At the same time, the movable blocking member can rely on the driving of high-pressure gas to cut off the gas outlet pipe, avoiding gas leakage, so that it can be automatically cut off when the user does not control the driving structure to cut off, further improving safety.

[0015] The additional aspects and advantages of the present invention will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the pressure reduction chamber of the present invention; Figure 3 is a schematic diagram of the explosion effect of the elastic structure of the present invention; Figure 4 is a front view schematic diagram of the overall structure of the present invention; Figure 5 is along the Figure 4 sectional view taken along line A-A in the present invention; Figure 6 is a rear view schematic diagram of the lower half of the valve body of the present invention; Figure 7 is along the Figure 6 sectional view taken along line B-B in the present invention; The corresponding reference numerals in the drawings are explained as follows: 1. Valve body; 11. Driving structure; 12. Air outlet pipe; 2. Air inlet pipe; 21. Air outlet hole; 22. Sealing gasket; 23. Limiting member; 24. Activity space; 3. Blocking member; 4. Pressure reduction chamber; 41. Sealing member; 411. Opening; 42. Elastic structure; 421. Metal elastic sheet; 422. Connecting rod; 423. Return spring; 424. Limiting plate; 43. Moving member; 431. Threaded hole. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1-7, A direct-insert pressure reducing valve with electromagnetic cut-off function, comprising a valve body 1 and an intake pipe 2 located inside the valve body 1. A movable blocking member 3 is provided inside the intake pipe 2. An air outlet hole 21 with a diameter smaller than that of the intake pipe 2 is formed at the outlet end of the intake pipe 2. The diameter of the blocking member 3 is larger than the diameter of the air outlet hole 21. The blocking member 3 has a sealing position and a ventilation position. When the blocking member 3 is in the sealing position, the blocking member 3 fits on the air outlet hole 21. When the blocking member 3 is in the ventilation position, the blocking member 3 is away from the air outlet hole 21. A driving structure 11 is provided on the outer side of the valve body 1. The driving end of the driving structure 11 is located inside the intake pipe 2 and abuts against the blocking member 3. A communication module is arranged inside the driving structure 11. The on-off of the valve body can be remotely controlled through the driving structure, so that even if the user is not around the valve body, the valve body can be cut off or conducted in time, improving safety. At the same time, the movable blocking member can rely on the drive of high-pressure gas to cut off the outlet pipe, preventing gas leakage. In this way, it can be automatically cut off when the user does not control the driving structure to cut off, further improving safety.

[0020] In some embodiments: A sealing gasket 22 is provided between the intake pipe 2 and the air outlet hole 21. The side of the sealing gasket 22 close to the blocking member 3 is arc-shaped and matched with the blocking member 3. The blocking member 3 will be driven by the gas in the intake pipe 2 to make the blocking member 3 fit on the sealing gasket 22, so as to block the sealing gasket 22 and prevent gas from passing through the sealing gasket 22 into the air outlet hole 21. When using gas, the driving structure 11 can be started. After the driving structure 11 is started, the driving end will press the blocking member 3 against the inner wall of the intake pipe 2, making the blocking member 3 unable to move, so that gas can normally pass through the sealing gasket 22 into the air outlet hole 21, preventing the blocking member 3 from fitting on the sealing gasket 22. The driving structure 11 can be in the form of electromagnetic drive, such as electromagnetic valves or electric push rods that can be purchased on the market.

[0021] Furthermore: In order to prevent the blocking member 3 from moving away from the driving end of the driving structure 11 due to the drive of gas, a limiting member 23 is provided inside the intake pipe 2. The space between the limiting member 23 and the sealing gasket 22 forms a movable space 24 for the blocking member 3 to move. The movable space 24 can ensure that the driving structure 11 can contact and press the blocking member 3 after being started. At the same time, the blocking member 3 can be in a spherical or polygonal shape that is convenient for movement. In this embodiment, it is preferably spherical.

[0022] In some embodiments: The gas pressure in the intake pipe 2 is relatively high, which is not conducive to subsequent gas transmission. Therefore, there is a pressure reduction chamber 4 inside the valve body 1. The end of the air outlet hole 21 is communicated with the pressure reduction chamber 4. An air outlet pipe 12 is provided outside the valve body 1. The intake end of the air outlet pipe 12 is communicated with the pressure reduction chamber 4. The pressure reduction chamber 4 can convert the gas with high pressure into gas with lower pressure, and then convey the converted gas away from the pressure reduction chamber 4 through the air outlet pipe 12, so that the converted gas can be used.

[0023] The specific pressure reduction process is as follows: A blocking member 41 is provided inside the pressure reduction chamber 4. The blocking member 41 is rotatably connected to the pressure reduction chamber 4. The end of the blocking member 41 is located at the air outlet end of the air outlet hole 21. The blocking member 41 has an open position and a cut-off position. When the blocking member 41 is in the open position, the blocking member 41 releases the blockage of the air outlet hole 21. When the blocking member 41 is in the cut-off position, the blocking member 41 blocks the air outlet end of the air outlet hole 21. An elastic structure 42 is provided inside the pressure reduction chamber 4. The elastic structure 42 is used to keep the blocking member 41 in the cut-off position. When the gas pressure is relatively high, the gas will push the blocking member 41 to the open position, so that the gas can flow into the pressure reduction chamber 4. When there is too much high-pressure gas in the pressure reduction chamber 4, it will push the elastic structure 42. After the elastic structure 42 is pushed, it will drive the blocking member 41 to flip. When the blocking member 41 flips, it will move from the open position to the cut-off position, so that the subsequent high-pressure gas cannot continue to enter the pressure reduction chamber 4. The high-pressure gas in the pressure reduction chamber 4 will also be converted into low-pressure gas due to the work of pushing the elastic structure 42, thus completing the conversion from high pressure to low pressure.

[0024] More specifically: The elastic structure 42 includes a metal shrapnel 421 located in the pressure relief chamber 4. The metal shrapnel 421 forms a sealed space with the inner wall of the pressure relief chamber 4 to prevent high-pressure gas from being transported out without doing work. A connecting rod 422 is provided on the metal shrapnel 421. One end of the connecting rod 422 is in contact with the plugging member 41. When the metal shrapnel 421 is squeezed and deformed by high-pressure gas, the metal shrapnel 421 will drive the connecting rod 422 to move. When the connecting rod 422 moves, it will drive the plugging member 41 to start flipping, so that the plugging member 41 moves from the open position to the cut-off position. A return spring 423 is provided in the pressure relief chamber 4. One end of the return spring 423 abuts against the metal shrapnel 421. Because the return spring 423 abuts against the metal shrapnel 421, when the high-pressure gas inside the pressure relief chamber 4 becomes less, the elastic force of the return spring 423 can push the metal shrapnel 421 downward, causing a downward concave deformation in a part of the metal shrapnel 421. When the metal shrapnel 421 deforms, it will drive the connecting rod 422 to move together. At this time, the movement of the connecting rod 422 drives the plugging member 41 to move from the cut-off position to the open position, allowing the high-pressure gas in the air outlet 21 to enter the pressure relief chamber 4. Moreover, while the return spring 423 deforms the metal shrapnel 421, the high-pressure gas in the air outlet 21 also pushes the plugging member 41 upward, enabling the plugging member 41 to move to the open position. By applying forces to the plugging member 41 in different directions in this way, the plugging member 41 can effectively move from the cut-off position to the open position, ensuring that the plugging member 41 can reciprocate between the cut-off position and the open position.

[0025] To control the elastic force of the return spring 423, a moving member 43 is provided on the valve body 1. A threaded hole 431 is provided at the position corresponding to the moving member 43 on the valve body 1. The moving member 43 moves relatively by being threadedly connected to the threaded hole 431. The return spring 423 is located in the threaded hole 431. The end of the return spring 423 away from the metal shrapnel 421 abuts against the moving member 43. The moving member 43 can move by being threadedly connected to the threaded hole 431. When the moving member 43 moves, it compresses the return spring 423 to enhance the elastic force of the return spring 423. And because the moving member 43 moves through threaded connection, the elastic force of the return spring 423 cannot act on the moving member 43 and can only act on the metal shrapnel 421 to ensure the deformation of the metal shrapnel 421.

[0026] In some embodiments: In order to ensure the convenience of disassembly and maintenance of the overall structure, an opening 411 is provided at one end of the plugging member 41 away from the air outlet 21. One end of the connecting rod 422 away from the metal elastic sheet 421 penetrates through the opening 411 and forms a limiting portion, and the limiting portion abuts against the plugging member 41. The connecting rod 422 can drive the plugging member 41 to move only through the limiting portion. When it is necessary to separate the connecting rod 422 from the plugging member 41, it is necessary to move the connecting rod 422 and the plugging member 41 relatively away in a parallel direction to release the abutment between the limiting portion and the plugging member 41, thereby reducing the difficulty of disassembly.

[0027] In some embodiments: In order to prevent the metal elastic sheet 421 from being deformed without limit, a limiting plate 424 for controlling the deformation of the metal elastic sheet 421 is provided on one side of the metal elastic sheet 421. The limiting plate 424 can enable the metal elastic sheet 421 to be deformed only in a limited manner, avoiding the situation where the metal elastic sheet 421 cannot be restored after deformation.

[0028] In some embodiments: The limiting member 23 is a spring. The spring limiting member 23 can move in the intake pipe 2 without being restricted by the diameter of the intake pipe 2, so that the size of the movable space 24 can be adjusted as needed.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A plug-in pressure reducing valve with electromagnetic cut-off function, characterized in that, It includes a valve body (1) and an intake pipe (2) located inside the valve body (1). An activatable blocking member (3) is provided inside the intake pipe (2). An air outlet hole (21) with a diameter smaller than that of the intake pipe (2) is formed at the air outlet end of the intake pipe (2). The diameter of the blocking member (3) is larger than the diameter of the air outlet hole (21). The blocking member (3) has a sealing position and a ventilation position. When the blocking member (3) is in the sealing position, the blocking member (3) fits on the air outlet hole (21). When the blocking member (3) is in the ventilation position, the blocking member (3) is away from the air outlet hole (21). A driving structure (11) is provided on the outer side of the valve body (1). The driving end of the driving structure (11) is located inside the intake pipe (2). The driving end of the driving structure (11) abuts against the blocking member (3). A communication module is provided inside the driving structure (11).

2. The direct-insert pressure reducing valve with electromagnetic cut-off function according to claim 1, characterized in that, A sealing gasket (22) is provided between the intake pipe (2) and the air outlet hole (21). The side of the sealing gasket (22) close to the blocking member (3) is arc-shaped and is matched with the blocking member (3).

3. The direct-insert pressure reducing valve with electromagnetic cut-off function according to claim 2, characterized in that, A limiting member (23) is provided inside the intake pipe (2). The space between the limiting member (23) and the sealing gasket (22) forms a moving space (24) for the blocking member (3) to move.

4. The direct plug-in pressure reducing valve with electromagnetic cut-off function according to claim 1, characterized in that, There is a decompression chamber (4) inside the valve body (1). The end of the air outlet hole (21) is communicated with the decompression chamber (4). An air outlet pipe (12) is provided on the outer side of the valve body (1). The intake end of the air outlet pipe (12) is communicated with the decompression chamber (4).

5. The direct-insert pressure reducing valve with electromagnetic cut-off function according to claim 4, characterized in that, A blocking member (41) is provided inside the decompression chamber (4). The blocking member (41) is rotatably connected to the decompression chamber (4). The end of the blocking member (41) is located at the air outlet end of the air outlet hole (21). The blocking member (41) has an open position and a cut-off position. When the blocking member (41) is in the open position, the blocking member (41) releases the blockage of the air outlet hole (21). When the blocking member (41) is in the cut-off position, the blocking member (41) blocks the air outlet end of the air outlet hole (21). An elastic structure (42) is provided inside the decompression chamber (4). The elastic structure (42) is used to keep the blocking member (41) in the cut-off position.

6. The direct plug-in pressure reducing valve with electromagnetic cut-off function according to claim 5, characterized in that, The elastic structure (42) includes a metal spring sheet (421) located in the decompression chamber (4). A connecting rod (422) is provided on the metal spring sheet (421). One end of the connecting rod (422) is in contact with the blocking member (41). A return spring (423) is provided in the decompression chamber (4). One end of the return spring (423) abuts against the metal spring sheet (421).

7. The direct-insert pressure reducing valve with electromagnetic cut-off function according to claim 6, characterized in that, A moving member (43) is provided on the valve body (1). A threaded hole (431) is provided at the position of the valve body (1) corresponding to the moving member (43). The moving member (43) moves relatively by being threadedly connected to the threaded hole (431). The return spring (423) is located in the threaded hole (431). The end of the return spring (423) away from the metal spring sheet (421) abuts against the moving member (43).

8. The direct plug-in pressure reducing valve with electromagnetic cut-off function according to claim 6, characterized in that, One end of the plugging member (41) away from the air outlet (21) is provided with an opening (411). One end of the connecting rod (422) away from the metal elastic sheet (421) penetrates through the opening (411) and forms a limiting portion, and the limiting portion abuts against the plugging member (41).

9. The direct-insert pressure reducing valve with electromagnetic cut-off function according to claim 6, characterized in that, One side of the metal elastic sheet (421) is provided with a limiting plate (424) for controlling the deformation of the metal elastic sheet (421).

10. The direct plug-in pressure reducing valve with electromagnetic cut-off function according to claim 3, characterized in that, The limiting member (23) is a spring.

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