External pressure guiding type gas pressure regulator

Abstract

The utility model relates to the technical field of gas pressure regulators, in particular to an external pressure guiding type gas pressure regulator which comprises a pressure regulator body, a gas inlet pipe and a gas outlet pipe are arranged on the pressure regulator body in a communicated mode, an upper cavity and a lower cavity are formed in the pressure regulator body, the gas inlet pipe is communicated with the upper cavity, and the gas outlet pipe is communicated with the lower cavity. A sealing groove is formed in the inner top wall of the lower cavity, a ventilation opening is formed in the groove bottom of the sealing groove, a supporting shell is fixedly arranged on the pressure regulator body, a supporting opening is formed between the supporting shell and the upper cavity, a supporting rod is slidably arranged in the supporting opening, and one end of the supporting rod penetrates through the ventilation opening and extends into the sealing groove. A sealing block is fixedly arranged at the end, close to the pressure regulator body, of the supporting rod, the sealing block communicates with the sealing groove, a pressure stabilizing mechanism is arranged in the supporting shell and used for stabilizing the pressure in the upper cavity, and through the technical scheme, the problem that in the prior art, pressure regulation of the gas pressure regulator is inconvenient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pressure regulators, in particular to an external pressure-guided gas pressure regulator. Background Art

[0002] Gas pressure regulator, commonly known as pressure reducing valve, also called gas pressure regulating valve, is a device that automatically changes the gas flow through the regulating valve to maintain the outlet gas at a specified pressure. Generally divided into direct-acting and indirect-acting types, a pressure regulator is a special valve on a gas pipeline that can maintain a stable downstream pressure regardless of changes in gas flow and upstream pressure. The pressure regulator should be able to reduce the upstream pressure to a stable downstream pressure and, in the event of a regulator failure, limit the downstream pressure to a safe range. For example, utility model patent publication number CN207906539U discloses an externally-guided gas pressure regulator, including a main pressure regulating valve and a relief valve. The main pressure regulating valve includes a valve body, an air inlet, and an air outlet. The air outlet end of the main pressure regulating valve is provided with a high-pressure needle valve, which is provided with a first valve switch. The externally-guided gas pressure regulator transmits high-pressure gas through the air guide pipe to the upper chamber of the pressure regulator via the high-pressure needle valve. The main pressure regulating valve and the relief valve are provided separately, making the pressure regulator easy to detect and adjust, and providing simple flow control and good safety.

[0003] However, the above-mentioned prior art is not convenient for adjusting the pressure during operation, and when the gas pressure is too high, it is not convenient to maintain the gas pressure within a value lower than the gas pressure, and cannot meet actual work requirements. Utility Model Content

[0004] The utility model provides an external pressure-guided gas pressure regulator, which solves the problem in the prior art that it is inconvenient to perform pressure regulation on the gas pressure regulator.

[0005] The vent pipe is connected with the air inlet of the air inlet pipe, and the vent pipe is connected with the air outlet pipe of the air outlet pipe, and the vent pipe is connected with the air outlet pipe of the air outlet pipe.

[0006] Preferably, the pressure stabilizing mechanism includes a support disk and a drive ring, the support disk is slidably arranged in the support shell, wherein the support rod is fixedly connected to the support disk, the drive ring is arranged in the support shell, a support spring is fixedly arranged between the drive ring and the support disk, and a position adjustment mechanism is arranged between the drive ring and the support shell for adjusting the position of the drive ring.

[0007] Furthermore, the position adjustment mechanism includes an adjustment port and a threaded rod. The support plate is provided with a plurality of adjustment ports. The support shell is provided with a plurality of threaded rods rotatably arranged. The threaded rods pass through the adjustment port and pass through the drive ring through threaded engagement. The support shell is fixedly provided with a drive shell. A synchronous rotation mechanism is provided in the drive shell for controlling the synchronous rotation of the plurality of threaded rods.

[0008] Furthermore, the synchronous rotation mechanism includes a first gear and a second gear, a plurality of the first gears are rotatably arranged in the drive housing, the first gear is fixedly connected to the threaded rod, the second gear is rotatably arranged in the drive housing, the second gear is meshed with the first gear, a drive port is opened on the inner top wall of the drive housing, a drive column is provided in the drive port, a limiting mechanism is provided between the drive column and the second gear, a handwheel is provided at one end of the drive column away from the drive housing, a drive spring is mounted on the drive column, and both ends of the drive spring are in contact with the drive housing and the handwheel respectively.

[0009] Furthermore, the limiting mechanism includes a limiting through groove, a limiting groove and a limiting block. A limiting opening is opened on the second gear, and a limiting through groove is opened on the side wall of the limiting opening. The driving column extends into the limiting opening, and a limiting block is fixedly provided on the side wall of the driving column. The limiting block extends into the limiting through groove and is slidably connected to the side wall of the limiting through groove. A plurality of limiting grooves are opened on the side wall of the driving opening, and the limiting groove passes through the side wall of the driving opening close to the second gear.

[0010] On the basis of the above solution, a filter groove is provided on the inner wall of the air inlet pipe, and a filter plate is fixedly provided in the filter groove.

[0011] On the basis of the above solution, the pressure regulating mechanism includes an electric push rod and a positioning ring. The positioning ring is slidably arranged in the support shell, and a plurality of the electric push rods are fixedly arranged between the positioning ring and the inner bottom wall of the support shell.

[0012] The working principle and beneficial effects of the utility model are as follows:

[0013] 1. In the present invention, by setting up the pressure stabilizing mechanism, after the gas enters the upper cavity through the intake pipe, when the pressure is met, the pressure of the gas can drive the support rod and the sealing block to move downward to open the air vent and the sealing groove, thereby maintaining a stable pressure. When the pressure needs to be adjusted, the driving column can be driven to rotate by rotating the hand wheel. At the same time, the second gear is driven to rotate by the cooperation between the limit block and the limit groove, and then the driving ring is driven to move by the meshing of the second gear and the first gear. At this time, the support spring is compressed, thereby increasing the elastic force, so that the gas pressure in the upper cavity can be adjusted.

[0014] 2. In the present invention, the limiting mechanism allows the drive column to move under the elastic force of the drive spring after the handwheel is released, so that the limiting block extends into the limiting groove. The limiting block and the limiting groove cooperate to limit the position of the drive column, thereby preventing the drive ring from shifting.

[0015] 3. In the present invention, by setting up a pressure regulating mechanism, when the gas pressure is too high, the electric push rod can drive the positioning ring to move, thereby limiting the range of movement of the support plate through the positioning ring, thereby limiting the pressure;

[0016] 4. In the present invention, the arrangement of the pressure regulator body, the supporting shell and the sealing block facilitates the pressure regulating mechanism and the pressure stabilizing mechanism to restrict the movement of the sealing block, thereby solving the problem in the prior art of the inconvenience of pressure regulation of the gas pressure regulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the utility model from another perspective;

[0021] Figure 4 This is a schematic diagram of the structure of the voltage regulating mechanism and the voltage stabilizing mechanism of the utility model.

[0022] In the figure: 1. Voltage regulator body; 2. Air inlet pipe; 3. Air outlet pipe; 4. Upper cavity; 5. Lower cavity; 6. Support shell; 7. Support rod; 8. Sealing block; 9. Support plate; 10. Drive ring; 11. Support spring; 12. Threaded rod; 13. Drive shell; 14. First gear; 15. Second gear; 16. Drive column; 17. Handwheel; 18. Drive spring; 19. Limit block; 20. Limit groove; 21. Filter plate; 22. Electric push rod; 23. Positioning ring. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 4 As shown, this embodiment proposes an external pressure-guided gas pressure regulator, including a pressure regulator body 1, an air inlet pipe 2 and an air outlet pipe 3 are connected to the pressure regulator body 1, an upper cavity 4 and a lower cavity 5 are provided in the pressure regulator body 1, the air inlet pipe 2 is connected to the upper cavity 4, and the air outlet pipe 3 is connected to the lower cavity 5, a sealing groove is provided on the inner top wall of the lower cavity 5, and an air vent is provided at the bottom of the sealing groove, a support shell 6 is fixedly provided on the pressure regulator body 1, a support port is provided between the support shell 6 and the upper cavity 4, a support rod 7 is slidably provided in the support port, one end of the support rod 7 passes through the air vent and extends into the sealing groove, a sealing block 8 is fixedly provided on the end of the support rod 7 near the pressure regulator body 1, and the sealing block 8 is connected to the sealing groove, a pressure stabilizing mechanism is provided in the support shell 6 for stabilizing the pressure in the upper cavity 4, and a pressure regulating mechanism is also provided in the support shell 6 for regulating the pressure in the upper cavity 4.

[0025] Reference Figure 1-Figure 4The pressure stabilizing mechanism includes a support plate 9 and a drive ring 10. The support plate 9 is slidably arranged in the support shell 6, wherein the support rod 7 is fixedly connected to the support plate 9, and the drive ring 10 is arranged in the support shell 6. A support spring 11 is fixedly arranged between the drive ring 10 and the support plate 9. A position adjustment mechanism is provided between the drive ring 10 and the support shell 6 for adjusting the position of the drive ring 10. The position adjustment mechanism includes an adjustment port and a threaded rod 12. A plurality of adjustment ports are opened on the support plate 9. A plurality of threaded rods 12 are rotatably arranged in the support shell 6. The threaded rod 12 passes through the adjustment port and passes through the drive ring 10 through threaded cooperation. A drive shell 13 is fixedly provided on the support shell 6, and a synchronous The rotation mechanism is used to control the synchronous rotation of multiple threaded rods 12. The synchronous rotation mechanism includes a first gear 14 and a second gear 15. Multiple first gears 14 are rotatably arranged in the drive housing 13. The first gear 14 is fixedly connected to the threaded rod 12. A second gear 15 is rotatably arranged in the drive housing 13. The second gear 15 is engaged with the first gear 14. A driving port is opened on the inner top wall of the drive housing 13, and a driving column 16 is provided in the driving port. A limiting mechanism is provided between the driving column 16 and the second gear 15. A handwheel 17 is provided at the end of the driving column 16 away from the driving housing 13. A driving spring 18 is mounted on the driving column 16, and the two ends of the driving spring 18 are respectively in contact with the drive housing 13 and the handwheel 17.

[0026] Specifically, after the gas enters the upper cavity 4 through the air inlet pipe 2, when the pressure is met, the pressure of the gas can drive the support rod 7 and the sealing block 8 to move downward to open the air vent and the sealing groove, thereby maintaining the pressure stable. Later, when the pressure needs to be adjusted, the driving column 16 can be driven to rotate by rotating the handwheel 17, and at the same time, the second gear 15 is driven to rotate by the cooperation between the limit block 19 and the limit groove, and then the drive ring 10 is driven to move by the engagement of the second gear 15 with the first gear 14. At this time, the support spring 11 is compressed, thereby increasing the elastic force, so that the gas pressure in the upper cavity 4 can be adjusted.

[0027] Reference Figure 2 and Figure 3 The limiting mechanism includes a limiting through groove, a limiting groove 20 and a limiting block 19. A limiting opening is opened on the second gear 15, and a limiting through groove is opened on the side wall of the limiting opening. The driving column 16 extends into the limiting opening, and a limiting block 19 is fixedly provided on the side wall of the driving column 16. The limiting block 19 extends into the limiting through groove and is slidably connected with the side wall of the limiting through groove. A plurality of limiting grooves 20 are opened on the side wall of the driving opening, and the limiting groove 20 passes through the side wall of the driving opening close to the second gear 15.

[0028] Specifically, after releasing the handwheel 17, the driving column 16 can be driven to move under the elastic force of the driving spring 18, so that the limit block 19 extends into the limit groove 20. At the same time, the limit block 19 and the limit groove 20 cooperate to limit the driving column 16, thereby avoiding position displacement of the driving ring 10.

[0029] Reference Figure 1-Figure 3 A filter tank is provided on the inner wall of the air inlet pipe 2, and a filter plate 21 is fixedly provided in the filter tank. The gas can be filtered by the filter plate 21, thereby preventing the impurities contained in the gas from affecting the service life of the voltage regulator body 1.

[0030] Reference Figure 3 and Figure 4 The pressure regulating mechanism includes an electric push rod 22 and a positioning ring 23. The positioning ring 23 is slidably arranged in the support shell 6. A plurality of electric push rods 22 are fixedly arranged between the positioning ring 23 and the inner bottom wall of the support shell 6.

[0031] Specifically, when the gas pressure is too high, the electric push rod 22 can drive the positioning ring 23 to move, thereby limiting the range of movement of the support plate 9 through the positioning ring 23, thereby limiting the pressure.

[0032] In this embodiment, when in use, after the gas enters the upper cavity 4 through the intake pipe 2, when the pressure is met, the pressure of the gas can drive the support rod 7 and the sealing block 8 to move downward to open the air vent and the sealing groove, thereby maintaining a stable pressure. When the pressure needs to be adjusted, the driving column 16 can be rotated by rotating the hand wheel 17, and the second gear 15 can be rotated by the cooperation of the limit block 19 and the limit groove, and then the drive ring 10 can be moved by the engagement of the second gear 15 with the first gear 14. At this time, the support spring 11 is compressed, and then The elastic force is increased, so that the gas pressure in the upper cavity 4 can be adjusted. After that, the operator releases the handwheel 17 and can drive the driving column 16 to move under the elastic force of the driving spring 18, so that the limit block 19 extends into the limit groove 20. At the same time, the limit block 19 and the limit groove 20 cooperate to limit the driving column 16, thereby avoiding the position displacement of the driving ring 10. When the gas pressure is too high, the positioning ring 23 can be driven to move by the work of the electric push rod 22, and the range of movement of the support plate 9 can be limited by the positioning ring 23, thereby limiting the pressure.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An external pressure-guided gas pressure regulator, characterized in that: The invention comprises a voltage regulator body (1), wherein an air inlet pipe (2) and an air outlet pipe (3) are connected to the voltage regulator body (1), an upper cavity (4) and a lower cavity (5) are provided in the voltage regulator body (1), the air inlet pipe (2) is connected to the upper cavity (4), the air outlet pipe (3) is connected to the lower cavity (5), a sealing groove is provided on the inner top wall of the lower cavity (5), an air vent is provided at the bottom of the sealing groove, a support shell (6) is fixedly provided on the voltage regulator body (1), a support port is provided between the support shell (6) and the upper cavity (4), a support rod (7) is slidably provided in the support port, one end of the support rod (7) passes through the air vent and extends into the sealing groove, and the support A sealing block (8) is fixedly provided at one end of the rod (7) close to the regulator body (1), and the sealing block (8) is communicated with the sealing groove. A pressure stabilizing mechanism is provided in the support shell (6) for stabilizing the pressure in the upper cavity (4). A pressure regulating mechanism is also provided in the support shell (6) for regulating the pressure in the upper cavity (4). The pressure stabilizing mechanism includes a support disk (9) and a drive ring (10). The support disk (9) is slidably provided in the support shell (6), wherein the support rod (7) is fixedly connected to the support disk (9), the drive ring (10) is provided in the support shell (6), and a fixed ring is provided between the drive ring (10) and the support disk (9). A support spring (11) is provided between the drive ring (10) and the support shell (6), and a position adjustment mechanism is provided for adjusting the position of the drive ring (10). The position adjustment mechanism includes an adjustment port and a threaded rod (12). A plurality of the adjustment ports are provided on the support disk (9). A plurality of the threaded rods (12) are rotatably provided in the support shell (6). The threaded rods (12) pass through the adjustment ports and pass through the drive ring (10) through threaded engagement. A drive shell (13) is fixedly provided on the support shell (6). A synchronous rotation mechanism is provided in the drive shell (13) for controlling the synchronous rotation of the plurality of threaded rods (12). The synchronous rotation mechanism includes a first gear A plurality of first gears (14) are rotatably provided in the drive housing (13), the first gears (14) are fixedly connected to the threaded rod (12), the second gear (15) is rotatably provided in the drive housing (13), the second gear (15) is meshed with the first gear (14), a drive port is provided on the inner top wall of the drive housing (13), a drive column (16) is provided in the drive port, a limiting mechanism is provided between the drive column (16) and the second gear (15), a hand wheel (17) is provided at one end of the drive column (16) away from the drive housing (13), and a drive spring (18) is sleeved on the drive column (16),The two ends of the driving spring (18) are in contact with the driving housing (13) and the hand wheel (17) respectively.

2. The external pressure-guided gas pressure regulator according to claim 1, characterized in that: The limiting mechanism includes a limiting through groove, a limiting groove (20) and a limiting block (19); a limiting opening is provided on the second gear (15); a limiting through groove is provided on the side wall of the limiting opening; the driving column (16) extends into the limiting opening; a limiting block (19) is fixedly provided on the side wall of the driving column (16); the limiting block (19) extends into the limiting through groove and is slidably connected to the side wall of the limiting through groove; a plurality of limiting grooves (20) are provided on the side wall of the driving opening; the limiting grooves (20) pass through the side wall of the driving opening close to the second gear (15).

3. The external pressure-guided gas pressure regulator according to claim 2, characterized in that: A filter groove is provided on the inner wall of the air inlet pipe (2), and a filter plate (21) is fixedly arranged in the filter groove.

4. The external pressure-guided gas pressure regulator according to claim 3, characterized in that: The pressure regulating mechanism comprises an electric push rod (22) and a positioning ring (23), wherein the positioning ring (23) is slidably arranged in the support shell (6), and a plurality of the electric push rods (22) are fixedly arranged between the positioning ring (23) and the inner bottom wall of the support shell (6).

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