Pneumatic pressure reducing valve with air leakage protection function

Abstract

The utility model relates to the technical field of pressure reducing valves, and discloses a pneumatic pressure reducing valve with an air leakage protection function, which comprises a pneumatic pressure reducing valve body, a connecting pipe is arranged at the lower end of the pneumatic pressure reducing valve body, and a valve core is arranged in the connecting pipe. Through the arrangement of the pressure sensor, the pressing plate, the spring and the inner push plate, gas at the left end and the right end can enter the connecting pipe through the through hole, the inner push plate moves upwards under pressure, the spring is compressed accordingly, and the rebound force of the spring can act on the pressure sensor through the pressing plate. The pressure sensor can detect the air pressure; by arranging the double-shaft motor, the screw rod, the moving plate, the L-shaped connecting rod, the sealing plug and the annular baffle, the double-shaft motor can drive the screw rod to rotate, the moving plate can drive the L-shaped connecting rod and the sealing plug to move towards the inner side, the sealing plug can abut against the annular baffle, the sealing effect can be achieved, and gas leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure reducing valves, in particular to a pneumatic pressure reducing valve with a gas leakage protection function. Background Art

[0002] The pressure reducing valve controls the opening of the opening and closing parts in the valve body to adjust the flow of the medium, reduce the pressure of the medium, and at the same time adjusts the opening of the opening and closing parts with the help of the pressure behind the valve to keep the pressure behind the valve within a certain range. The characteristic of this valve is that it can keep the outlet pressure value within a certain range when the inlet pressure is constantly changing.

[0003] Some pneumatic pressure reducing valves currently on the market only have the function of reducing pressure, but do not have the function of gas leakage protection. When the valve core is damaged and gas leakage occurs, personnel cannot discover it in time, thus posing certain safety hazards. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a pneumatic pressure reducing valve with a leakage protection function. By arranging a pressure sensor, a pressure plate, a spring, and an inner push plate, the air pressure at the left and right ends of the connecting pipe can be detected. By arranging a dual-axis motor, a screw, a movable plate, an L-shaped connecting rod, a sealing plug, and an annular baffle, the left and right ends of the valve core can be closed when the valve core is damaged and leaks, thereby avoiding gas leakage, thereby solving the above-mentioned technical problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic pressure reducing valve with a leakage protection function, comprising a pneumatic pressure reducing valve body, the lower end of the pneumatic pressure reducing valve body is a connecting pipe, a valve core is installed inside the connecting pipe, a mounting box 1 is fixedly arranged on both sides of the upper end surface of the connecting pipe, a mounting box 2 is fixedly arranged on the lower end surface of the connecting pipe, a pressure sensor is fixedly arranged on the top of the mounting box 1, a pressure plate is fixedly arranged on the lower end surface of the pressure sensor, a spring is fixedly arranged on the lower end surface of the pressing plate, and the spring An inner push plate is fixedly provided at the other end, and a through hole is provided on the upper end surface of the connecting tube, and the through hole is communicated with the interior of the installation box one; a dual-axis motor is fixedly provided at the bottom of the interior of the installation box two, and a screw is fixedly provided at the output end of the dual-axis motor, and a movable plate is sleeved on the outer side of the screw, and clearance grooves are provided on the left and right sides of the bottom of the interior of the connecting tube, and an L-shaped connecting rod is fixedly provided on the upper end surface of the movable plate, and a sealing plug is fixedly provided on the other end of the L-shaped connecting rod through the clearance groove, and annular baffles are fixedly provided on the left and right sides of the interior of the connecting tube.

[0008] Preferably, three springs are provided.

[0009] Through the above technical solution, the arrangement of three springs can play a role in smoothly connecting the inner push plate and the pressure plate.

[0010] Preferably, a threaded hole is opened on the right side of the movable plate, and the movable plate is threadedly connected to the screw rod through the threaded hole.

[0011] Through the above technical solution, the movable plate can be driven to move inward when the screw rotates.

[0012] Preferably, partitions are fixedly provided on both left and right sides of the interior of the second installation box.

[0013] Through the above technical solution, the setting of the partition can play a barrier role.

[0014] Preferably, a rotating disk is fixedly provided on the other end of the screw rod, and the rotating disk is located outside the second installation box.

[0015] Through the above technical solution, the setting of the rotating disk makes it convenient for personnel to manually rotate the screw.

[0016] Preferably, a mounting groove is provided on the outer side of the inner push plate, and a sealing ring is provided inside the mounting groove.

[0017] Through the above technical solution, the installation groove is provided to facilitate the installation of the sealing ring.

[0018] Preferably, a pressure gauge is installed on the front of the installation box 1.

[0019] Through the above technical solution, the setting of the pressure gauge makes it easy for personnel to observe the air pressure of the connecting pipes at the left and right ends.

[0020] Compared with the prior art, the utility model provides a pneumatic pressure reducing valve with air leakage protection function, which has the following beneficial effects:

[0021] 1. The utility model is provided with a pressure sensor, a pressure plate, a spring, and an inner push plate. The gas at the left and right ends can enter the interior of the connecting pipe through the through hole. The inner push plate moves upward under pressure, and the spring is compressed. The spring rebound force can act on the pressure sensor through the pressure plate, and the pressure sensor can detect the air pressure.

[0022] 2. The utility model is provided with a double-axis motor, a screw, a movable plate, an L-shaped connecting rod, a sealing plug and an annular baffle. When the gas pressure is too low, the double-axis motor is automatically started, the double-axis motor drives the screw to rotate, and the movable plate can drive the L-shaped connecting rod and the sealing plug to move inward, so that the sealing plug can resist the annular baffle, thereby playing a sealing role and avoiding gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of a cross-sectional structure of a mounting box of the utility model;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of two parts of the installation box of the utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the movable plate of the utility model;

[0027] Figure 5 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0028] Among them: 1. Pneumatic pressure reducing valve body; 2. Valve core; 3. Connecting pipe; 4. Installation box 1; 5. Installation box 2; 6. Pressure sensor; 7. Pressure plate; 8. Spring; 9. Push plate; 10. Through hole; 11. Installation groove; 12. Sealing ring; 13. Dual-axis motor; 14. Partition; 15. Screw; 16. Moving plate; 17. Threaded hole; 18. Rotating disk; 19. Make way groove; 20. L-shaped connecting rod; 21. Sealing plug; 22. Annular baffle; 23. Pressure gauge. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] like Figure 1-4As shown, the utility model provides a pneumatic pressure reducing valve with a leakage protection function, including a pneumatic pressure reducing valve body 1, a connecting pipe 3 at the lower end of the pneumatic pressure reducing valve body 1, a valve core 2 is installed inside the connecting pipe 3, a mounting box 1 4 is fixedly arranged on both sides of the upper end surface of the connecting pipe 3, a mounting box 2 5 is fixedly arranged on the lower end surface of the connecting pipe 3, a pressure sensor 6 is fixedly arranged on the top of the mounting box 1 4, a pressure plate 7 is fixedly arranged on the lower end surface of the pressure sensor 6, three springs 8 are fixedly arranged on the lower end surface of the pressing plate 7, and an inner push plate 9 is fixedly arranged on the other end of the spring 8 A through hole 10 is provided on the upper end surface of the connecting tube 3, and the through hole 10 is communicated with the interior of the mounting box 1 4; a dual-axis motor 13 is fixedly provided at the bottom of the interior of the mounting box 2 5, a screw 15 is fixedly provided at the output end of the dual-axis motor 13, and a movable plate 16 is sleeved on the outer side of the screw 15, and a clearance groove 19 is provided on both sides of the bottom of the interior of the connecting tube 3, and an L-shaped connecting rod 20 is fixedly provided on the upper end surface of the movable plate 16, and a sealing plug 21 is fixedly provided on the other end of the L-shaped connecting rod 20 through the clearance groove 19, and an annular baffle 22 is fixedly provided on both sides of the interior of the connecting tube 3.

[0032] Specifically, there are three springs 8 in total. The advantage is that the arrangement of the three springs 8 can play a role in smoothly connecting the inner push plate 9 and the pressure plate 7.

[0033] Specifically, a threaded hole 17 is provided on the right side of the movable plate 16, and the movable plate 16 is threadedly connected to the screw rod 15 through the threaded hole 17. The advantage is that when the screw rod 15 rotates, the movable plate 16 can be driven to move inward.

[0034] Specifically, partitions 14 are fixedly arranged on both the left and right sides of the interior of the second installation box 5. The advantage is that the arrangement of the partitions 14 can play a role in blocking the connecting pipes 3 on the left and right sides.

[0035] Embodiment 2:

[0036] like Figure 1 , Figure 3 , Figure 5 As shown, as an improvement to the previous embodiment. Specifically, a rotating disk 18 is fixedly provided at the other end of the screw rod 15, and the rotating disk 18 is located outside the installation box 2 5. The advantage is that after the valve core 2 is repaired, the rotating disk 18 can be manually rotated, and the rotating disk 18 can drive the screw rod 15 to rotate, and the moving plate 16 can drive the sealing plug 21 to return to its original position through the L-shaped connecting rod 20, so that the connecting pipe 3 can restore the flow of gas.

[0037] Specifically, a mounting groove 11 is provided on the outer side of the inner push plate 9, and a sealing ring 12 is provided inside the mounting groove 11. The advantage is that the opening of the mounting groove 11 facilitates the setting of the sealing ring 12, and the setting of the sealing ring 12 can play a sealing role.

[0038] Specifically, a pressure gauge 23 is installed on the front of the installation box 1 4. The advantage is that the setting of the pressure gauge 23 is convenient for personnel to observe the air pressure of the connecting pipes 3 at the left and right ends.

[0039] When in use, the model of the pressure sensor 6 is CYYZ11; the gas inside the connecting pipe 3 can enter the interior of the installation box 4 through the through hole 10, and the inner push plate 9 moves upward under the pressure, so that the spring 8 is compressed, and the rebound force of the spring 8 acts on the pressure sensor 6 through the pressure plate 7, so that the pressure sensor 6 can detect the pressure; when the valve core 2 is damaged and leaks, the pressure inside the connecting pipe 3 will decrease. At this time, the pressure sensor 6 senses that the pressure change is too large, so that the dual-axis motor 13 can be automatically started, and the output end of the dual-axis motor 13 can drive the screw rods 15 on the left and right sides to rotate, and the moving plate 16 is acted upon by the screw rod 15 thread to drive the L-shaped connecting rod 20 and the sealing plug 21 to move inward, so that the sealing plug 21 can resist the annular baffle 22, so as to play a sealing role on the left and right sides of the valve core 2 to avoid gas leakage; after the personnel have repaired the valve core 2, the rotating disks 18 on both sides can be rotated to restore the sealing plug 21 to its original position, thereby restoring the circulation of the gas.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic pressure reducing valve with a leakage protection function, comprising a pneumatic pressure reducing valve body (1), characterized in that: The lower end of the pneumatic pressure reducing valve body (1) is a connecting pipe (3), a valve core (2) is installed inside the connecting pipe (3), a mounting box (4) is fixedly provided on both sides of the upper end surface of the connecting pipe (3), a mounting box (5) is fixedly provided on the lower end surface of the connecting pipe (3), a pressure sensor (6) is fixedly provided on the top of the mounting box (4), a pressure plate (7) is fixedly provided on the lower end surface of the pressure sensor (6), a spring (8) is fixedly provided on the lower end surface of the pressure plate (7), an inner push plate (9) is fixedly provided on the other end of the spring (8), a through hole (10) is opened on the upper end surface of the connecting pipe (3), and the The through hole (10) is communicated with the interior of the first installation box (4); a double-axis motor (13) is fixedly arranged at the bottom of the interior of the second installation box (5); a screw rod (15) is fixedly arranged at the output end of the double-axis motor (13); a movable plate (16) is sleeved on the outer side of the screw rod (15); a clearance groove (19) is provided on both the left and right sides of the bottom of the interior of the connecting tube (3); an L-shaped connecting rod (20) is fixedly arranged on the upper end surface of the movable plate (16); a sealing plug (21) is fixedly arranged at the other end of the L-shaped connecting rod (20) through the clearance groove (19); and an annular baffle (22) is fixedly arranged on both the left and right sides of the interior of the connecting tube (3).

2. The pneumatic pressure reducing valve with air leakage protection function according to claim 1, characterized in that: A total of three springs (8) are provided.

3. The pneumatic pressure reducing valve with air leakage protection function according to claim 1, characterized in that: A threaded hole (17) is provided on the right side of the movable plate (16), and the movable plate (16) is threadedly connected to the screw rod (15) through the threaded hole (17).

4. The pneumatic pressure reducing valve with air leakage protection function according to claim 1, characterized in that: Partition plates (14) are fixedly arranged on both left and right sides of the interior of the second installation box (5).

5. The pneumatic pressure reducing valve with air leakage protection function according to claim 1, characterized in that: A rotating disk (18) is fixedly disposed at the other end of the screw rod (15), and the rotating disk (18) is located outside the second installation box (5).

6. The pneumatic pressure reducing valve with air leakage protection function according to claim 1, characterized in that: The outer side of the inner push plate (9) is provided with a mounting groove (11), and the interior of the mounting groove (11) is provided with a sealing ring (12).

7. The pneumatic pressure reducing valve with air leakage protection function according to claim 1, characterized in that: A pressure gauge (23) is installed on the front of the installation box 1 (4).

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