Gas pressure regulator with pressure relief function

Abstract

The utility model relates to the technical field of gas pressure regulators, in particular to a gas pressure regulator with a pressure relief function, which comprises a valve body, a sealing plate and a partition plate are sequentially arranged inside the valve body from top to bottom, a gas inlet pipe is arranged in the middle of the outer wall of the valve body, a pressure relief box is connected with the inside of the valve body through a connecting pipe, and an exhaust pipe is arranged at the right end of the pressure relief box. The adjusting rod is sequentially provided with a sealing ring, a rubber ring and a limiting plate from top to bottom, a valve element is arranged at the bottom of the adjusting rod, and a baffle is arranged in the middle in the pressure relief box. According to the gas pressure regulator with the pressure relief function, the pressure relief box is connected with the valve body through a connecting pipe, the valve body is internally provided with an adjusting rod with a screwing handle, the adjusting rod is in threaded connection with a screw hole, a valve element is matched with the bottom of the adjusting rod in an inserted connection mode through a sleeve column, and under cooperation of a first spring, preliminary pressure relief and discharge are conducted; and under the cooperation of a second spring, secondary pressure relief and discharge cooperation is carried out, the pressure relief stability is improved, and overall combination and installation are convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pressure regulators, in particular to a gas pressure regulator with a pressure relief function. Background Technique

[0002] The gas pressure regulating valve is a device for direct rod type and lever type differential pressure feedback control pressure regulation. The gas in the gas cylinder is in a liquid state, and the pressure is too high, so it must be reduced in pressure before it is suitable for leading to the stove for combustion;

[0003] The utility model with the publication number of CN221780536U discloses a gas pressure regulator, which includes a protection box and a pressure regulator body. A pair of clamping plates are symmetrically arranged left and right in the protection box. A support plate is arranged between the pair of clamping plates. The left and right ends of the support plate penetrate through the pair of clamping plates and are fixedly connected to the left and right inner walls of the protection box. A screw rod is arranged below the support plate. Threaded sections are symmetrically arranged on the screw rod. The two ends of the screw rod are rotatably connected to the left and right inner walls of the protection box. The pair of clamping plates are in threaded connection with the screw rod through internally arranged threaded holes. One end of the screw rod extends outside the protection box and is fixedly sleeved with a rotary handle. The pressure regulator body is arranged on the support plate and between the pair of clamping plates;

[0004] In the above technical solution, the screw rod with symmetric threaded sections is rotated to make the clamping plates move towards each other, so as to clamp the pressure regulator body on the support plate, thereby preventing the pressure regulator body from being damaged. Moreover, the position between the pair of clamping plates is adjustable, so that pressure regulator bodies of different specifications and sizes can be used, and the applicability is wider; however, the pressure relief function of the gas pressure regulator becomes loose after long-term use, affecting the continuous pressure relief cooperation, and the pressure relief structure is single, which cannot reduce the influence of high-pressure impact damage and affects the adjustment cooperation. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gas pressure regulator with a pressure relief function to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gas pressure regulator with a pressure relief function, comprising a valve body. In the middle of the top of the valve body, there is an adjusting rod that can rotate and adjust up and down. Inside the valve body, a sealing plate and a partition plate are successively arranged from top to bottom. In the middle of the outer wall of the valve body, there is an air inlet pipe. At the bottom of the outer wall of the valve body, near the right side, there is a pressure relief box. The pressure relief box is connected to the inside of the valve body through a connecting pipe. At the right end of the pressure relief box, there is an exhaust pipe. At the top of the adjusting rod, there is a knob. From top to bottom, the adjusting rod is successively provided with a sealing ring, a rubber ring and a limiting plate. At the bottom of the adjusting rod, there is a valve core. At the top of the valve core, there is a sleeve column. At the corresponding position of the top of the sleeve column and the adjusting rod, there is a slot. On the outer wall of the sleeve column, there is a first spring. In the middle of the pressure relief box, there is a baffle plate. At the right end of the baffle plate, there is a support frame. On the right side of the baffle plate, there is a clamping slot. In the clamping slot, there is a movable plate. Between the movable plate and the support frame, there are several second springs. At the top of the pressure relief box, there is an annular groove. In the annular groove, there is a sealing cover.

[0008] Furthermore, the partition plate and the valve body are of an integrally formed structure. In the middle of the partition plate, there is a conical hole, and the inner diameter of the conical hole is adapted to the outer diameter of the valve core.

[0009] In the present utility model, the valve core is tightly inserted and matched with the conical hole, increasing the sealing performance with the partition plate and realizing the initial cut-off cooperation of the valve body.

[0010] Specifically, the sealing plate is fixedly welded to the valve body. In the middle of the sealing plate, there is a sliding hole, and the inner diameter of the sliding hole is adapted to the outer diameter of the rubber ring. The rubber ring is slidably connected to the adjusting rod.

[0011] In the present utility model, with the cooperation of the rubber ring, the sealing performance between the adjusting rod and the sealing plate is increased, reducing the influence of air leakage.

[0012] It should be noted that there is a threaded hole at the top of the valve body. The top of the adjusting rod is threadedly connected to the threaded hole. The top of the adjusting rod and the knob are fixedly connected by screws. The sealing ring is adhesively fixed to the adjusting rod. The outer diameter of the sealing ring is adapted to the inner diameter of the valve body.

[0013] In the present utility model, the top of the adjusting rod is connected and matched with the threaded hole. Under the rotational cooperation of the knob, the position of the adjusting rod moving up and down in the valve body is realized. The sealing ring further increases the sealing performance between the adjusting rod and the valve body, reducing the influence of air leakage.

[0014] Furthermore, the air inlet pipe is fixedly welded to the valve body. One end of the connecting pipe is fixedly welded to the valve body, and the other end of the connecting pipe is fixedly welded to the pressure relief box. The exhaust pipe is fixedly welded to the pressure relief box.

[0015] In the present utility model, the fixed welding increases the stability of the combination. The air inlet pipe is helpful for the connection and cooperation with the external output pipeline. With the cooperation of the exhaust pipe, it is helpful for the connection and cooperation with the external gas use pipeline.

[0016] It is worth adding that the width of the inner wall of the annular groove is adapted to the width of the outer wall of the sealing cover. Perforations are provided at the four corners of the upper surface of the sealing cover, and fastening bolts are provided in the perforations. Thread grooves are provided in the annular groove corresponding to the perforations. A rubber pad is provided at the bottom of the sealing cover, and the width of the outer wall of the rubber pad is adapted to the width of the inner wall of the pressure relief box.

[0017] In the present utility model, with the cooperation of the rubber pad, the sealing performance between the sealing cover and the pressure relief box is enhanced. The fastening bolts pass through the perforations and are threadedly connected to the thread grooves, realizing the sealing stability between the sealing cover and the pressure relief box.

[0018] Furthermore, the outer wall of the baffle is fixedly welded to the inner wall of the pressure relief box, the support frame is fixedly welded to the baffle. A through groove is provided at the bottom of the card slot, and the width of the inner wall of the card slot is adapted to the width of the outer wall of the movable plate. The bottom of the movable plate is rotatably connected to the baffle. A plurality of exhaust grooves are provided at the top of the baffle. The second springs are evenly distributed. One end of the second spring is fixedly bonded to the movable plate, and the other end is fixedly bonded to the support frame.

[0019] In the present utility model, the baffle is provided with a rotatable movable plate, and with the cooperation of a plurality of exhaust grooves, the internal gas is guided and discharged. With the cooperation of a plurality of second springs, it is helpful for secondary pressure relief and gas discharge.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1. In the present utility model, the pressure relief box is connected to the valve body through a connecting pipe. The valve body is provided with an adjusting rod with a knob, which is threadedly connected to a threaded hole. The valve core is inserted and matched with the bottom of the adjusting rod through a sleeve column. With the cooperation of the first spring, preliminary pressure relief and discharge are carried out. When the adjusting rod is rotated to the top of the valve body, the sealing pressure of the valve core is large. According to the size of the pressure to be released, the adjusting rod moves downward, and the pressure of the valve core decreases. The baffle with a movable plate in the pressure relief box, with the cooperation of the second spring, carries out secondary pressure relief and discharge, increasing the stability of pressure relief, and the overall combination and installation are convenient.

[0022] 2. In the present utility model, a rubber ring is provided to increase the sealing performance between the adjusting rod and the valve body. With the cooperation of the sealing ring, the airtightness is further enhanced. The sealing cover, with the cooperation of the rubber pad, increases the sealing performance with the pressure relief box. The fastening bolts facilitate the disassembly of the sealing cover. The movable plate is provided with exhaust grooves, which helps to guide the gas to be discharged and relieved to be discharged from the top of the movable plate, thus facilitating pressure relief and discharge. The intake pipe is convenient for connection with the gas pipeline, and the exhaust pipe is convenient for combined connection with the appliances to be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 This is a schematic cross-sectional structure diagram of the valve body and the adjusting rod of the present utility model;

[0025] Figure 3 This is a schematic cross-sectional structure diagram of the valve body of the present utility model;

[0026] Figure 4 This is a schematic structure diagram of the adjusting rod of the present utility model;

[0027] Figure 5 This is a schematic combined structure diagram of the pressure relief box and the sealing cover of the present utility model;

[0028] Figure 6 This is a schematic frame structure diagram of the pressure relief box of the present utility model;

[0029] Figure 7 This is a schematic overall cross-sectional structure diagram of the present utility model.

[0030] The meanings of the respective reference numerals in the figure are as follows:

[0031] 1. Valve body; 10. Partition plate; 11. Sealing plate; 12. Screw hole;

[0032] 2. Adjusting rod; 20. Knob; 21. Sealing ring; 22. Valve core; 220. Sleeve column; 221. Slot; 23. First spring; 24. Limiting plate; 25. Rubber ring;

[0033] 3. Pressure relief box; 30. Annular groove; 300. Threaded groove; 31. Sealing cover; 310. Rubber pad; 311. Perforation; 312. Tightening bolt; 32. Baffle plate; 320. Support frame; 321. Card slot; 322. Through groove; 33. Movable plate; 330. Second spring; 331. Exhaust groove;

[0034] 4. Inlet pipe;

[0035] 5. Outlet pipe. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0037] Please refer to Figures 1-7 , this embodiment provides a technical solution:

[0038] A gas pressure regulator with a pressure relief function, including a valve body 1. An adjusting rod 2 that can rotate and adjust up and down is provided in the middle of the top of the valve body 1. A sealing plate 11 and a partition plate 10 are successively arranged in the valve body 1 from top to bottom. The partition plate 10 and the valve body 1 are integrally formed. A conical hole is opened in the middle of the partition plate 10, and the inner diameter of the conical hole is adapted to the outer diameter of the valve core 22.

[0039] In the present utility model, the valve core 22 is closely inserted and matched with the conical hole, increasing the sealing performance with the partition plate 10 and realizing the initial shut-off cooperation of the valve body 1.

[0040] Furthermore, the sealing plate 11 is fixedly welded to the valve body 1. A sliding hole is opened in the middle of the sealing plate 11, and the inner diameter of the sliding hole is adapted to the outer diameter of the rubber ring 25. The rubber ring 25 is slidably connected to the adjusting rod 2.

[0041] In the present utility model, with the cooperation of the rubber ring 25, the sealing performance between the adjusting rod 2 and the sealing plate 11 is increased, reducing the influence of air leakage.

[0042] Specifically, a knob 20 is provided at the top of the adjusting rod 2. The adjusting rod 2 is successively provided with a sealing ring 21, a rubber ring 25 and a limiting plate 24 from top to bottom. A valve core 22 is provided at the bottom of the adjusting rod 2. A sleeve column 220 is provided at the top of the valve core 22. A slot 221 is opened at the corresponding position of the top of the sleeve column 220 and the adjusting rod 2. A first spring 23 is provided on the outer wall of the sleeve column 220.

[0043] It should be noted that a threaded hole 12 is opened at the top of the valve body 1. The top of the adjusting rod 2 is threadedly connected to the threaded hole 12. The top of the adjusting rod 2 and the knob 20 are fixedly connected by screws. The sealing ring 21 is fixedly bonded to the adjusting rod 2, and the outer diameter of the sealing ring 21 is adapted to the inner diameter of the valve body 1.

[0044] In the present utility model, the top of the adjusting rod 2 is connected and matched with the threaded hole 12. With the rotation of the knob 20, the position of the adjusting rod 2 moving up and down in the valve body 1 is realized. The sealing ring 21 further increases the sealing performance between the adjusting rod 2 and the valve body 1, reducing the influence of air leakage.

[0045] Furthermore, an air inlet pipe 4 is provided in the middle of the outer wall of the valve body 1. A pressure relief box 3 is provided near the right side at the bottom of the outer wall of the valve body 1. The pressure relief box 3 is connected to the inside of the valve body 1 through a connecting pipe. An exhaust pipe 5 is provided at the right end of the pressure relief box 3. The air inlet pipe 4 is fixedly welded to the valve body 1. One end of the connecting pipe is fixedly welded to the valve body 1, and the other end of the connecting pipe is fixedly welded to the pressure relief box 3. The exhaust pipe 5 is fixedly welded to the pressure relief box 3.

[0046] In the present utility model, the fixed welding increases the stability of the combination. The air inlet pipe 4 helps the connection and cooperation with the external output pipeline. With the cooperation of the exhaust pipe 5, it helps the connection and cooperation with the external gas use pipeline.

[0047] Specifically, a baffle 32 is provided in the middle inside the pressure relief box 3. A support frame 320 is provided at the right end of the baffle 32. A card slot 321 is provided on the right side of the baffle 32. A movable plate 33 is provided in the card slot 321. A number of second springs 330 are provided between the movable plate 33 and the support frame 320. An annular groove 30 is provided at the top of the pressure relief box 3. A sealing cover 31 is provided in the annular groove 30.

[0048] It is worth adding that the width of the inner wall of the annular groove 30 is adapted to the width of the outer wall of the sealing cover 31. Through holes 311 are provided near the four corners of the upper surface of the sealing cover 31. Fastening bolts 312 are provided in the through holes 311. Thread grooves 300 are provided at the positions corresponding to the through holes 311 in the annular groove 30. A rubber pad 310 is provided at the bottom of the sealing cover 31. The width of the outer wall of the rubber pad 310 is adapted to the width of the inner wall of the pressure relief box 3.

[0049] In the present utility model, with the cooperation of the rubber pad 310, the sealing performance between the sealing cover 31 and the pressure relief box 3 is enhanced. The fastening bolt 312 passes through the through hole 311 and is threadedly connected to the thread groove 300, realizing the sealing stability between the sealing cover 31 and the pressure relief box 3.

[0050] Furthermore, the outer wall of the baffle 32 is fixedly welded to the inner wall of the pressure relief box 3, the support frame 320 is fixedly welded to the baffle 32. A through groove 322 is provided at the bottom of the card slot 321. The width of the inner wall of the card slot 321 is adapted to the width of the outer wall of the movable plate 33. The bottom of the movable plate 33 is rotatably connected to the baffle 32. A number of exhaust grooves 331 are provided at the top of the baffle 32. The second springs 330 are evenly distributed. One end of the second spring 330 is fixedly bonded to the movable plate 33, and the other end is fixedly bonded to the support frame 320.

[0051] In the present utility model, the baffle 32 is provided with a rotatable and openable movable plate 33. With the cooperation of a number of exhaust grooves 331, the internal gas is guided and discharged. With the cooperation of a number of second springs 330, it is helpful to carry out secondary pressure relief and gas discharge cooperation.

[0052] When the gas pressure regulator with a pressure relief function of this embodiment is in use, the user first connects the pressure relief box 3 and the valve body 1 through a connecting pipe. The top of the adjusting rod 2 with a turning handle 20 is threadedly connected to the screw hole 12. The sealing ring 21 is located in the inner space of the valve body 1 on the sealing plate 11. The rubber ring 25 is tightly inserted and fitted with the sliding hole on the sealing plate 11. The valve core 22 is inserted and fitted with the conical hole on the partition plate 10, and the sleeve column 220 on the valve core 22 is inserted and fitted with the bottom of the adjusting rod 2. The bottom of the first spring 23 is adhesively fixed to the valve core 22, and the top of the first spring 23 is adhesively fixed to the bottom of the limiting plate 24. Then, the baffle 32 with a support frame 320 is fixedly combined with the pressure relief box 3. The movable plate 33 with an exhaust groove 331 is rotatably connected in the clamping groove 321, and one end of the second spring 330 is adhesively fixed to the movable plate 33, and the other end of the second spring 330 is adhesively fixed to the support frame 320;

[0053] It is fixedly connected to the gas output pipe in cooperation with the intake pipe 4, and the exhaust pipe 5 is connected to the gas use pipeline. When gas pressure relief and discharge are required, manually rotate the turning handle 20 to lower the adjusting rod 2. With the cooperation of the first spring 23, the pressure between the top of the valve core 22 and the partition plate 10 decreases, and preliminary pressure relief and discharge are carried out. The gas enters the pressure relief box 3 through the valve body 1. Under the cooperation and guidance of the exhaust groove 331, the gas is discharged from the top of the movable plate 33, squeezing the movable plate 33. With the cooperation of the second spring 330, the gas is further pressure-relieved and discharged, and finally discharged for use through the exhaust pipe 5. The double-layer pressure relief cooperation reduces the relaxation caused by long-term extrusion, affects the sealing fit, and reduces the impact damage to the valve body 1. The overall combined installation is convenient and easy for the user to operate.

Claims

1. A gas pressure regulator with a pressure relief function, comprising a valve body (1), wherein an adjusting rod (2) that can be rotated and adjusted up and down is provided at the middle of the top of the valve body (1), and it is characterized in that: Inside the valve body (1), a sealing plate (11) and a partition plate (10) are successively arranged from top to bottom. In the middle of the outer wall of the valve body (1), an air inlet pipe (4) is provided. At the bottom of the outer wall of the valve body (1) near the right side, a pressure relief box (3) is provided. The pressure relief box (3) is connected to the inside of the valve body (1) through a connecting pipe. At the right end of the pressure relief box (3), an exhaust pipe (5) is provided. At the top of the adjusting rod (2), a turning handle (20) is provided. From top to bottom, the adjusting rod (2) is successively provided with a sealing ring (21), a rubber ring (25) and a limiting plate (24). At the bottom of the adjusting rod (2), a valve core (22) is provided. At the top of the valve core (22), a sleeve column (220) is provided. At the corresponding position of the top of the sleeve column (220) and the adjusting rod (2), a slot (221) is opened. On the outer wall of the sleeve column (220), a first spring (23) is provided. In the middle of the pressure relief box (3), a baffle plate (32) is provided. At the right end of the baffle plate (32), a support frame (320) is provided. On the right side of the baffle plate (32), a clamping slot (321) is opened. In the clamping slot (321), a movable plate (33) is provided. Between the movable plate (33) and the support frame (320), several second springs (330) are provided. At the top of the pressure relief box (3), an annular groove (30) is opened. In the annular groove (30), a sealing cover (31) is provided.

2. The gas pressure regulator with a pressure relief function according to claim 1, characterized in that: The partition plate (10) and the valve body (1) are of an integrally formed structure. In the middle of the partition plate (10), a conical hole is opened, and the inner diameter of the conical hole is adapted to the outer diameter of the valve core (22).

3. The gas pressure regulator with a pressure relief function according to claim 1, characterized in that: The sealing plate (11) is fixedly welded to the valve body (1). In the middle of the sealing plate (11), a sliding hole is opened, and the inner diameter of the sliding hole is adapted to the outer diameter of the rubber ring (25). The rubber ring (25) is slidably connected to the adjusting rod (2).

4. The gas pressure regulator with a pressure relief function according to claim 1, characterized in that: At the top of the valve body (1), a screw hole (12) is opened. The top of the adjusting rod (2) is threadedly connected to the screw hole (12). The top of the adjusting rod (2) and the turning handle (20) are fixedly connected by screws. The sealing ring (21) is fixedly bonded to the adjusting rod (2). The outer diameter of the sealing ring (21) is adapted to the inner diameter of the valve body (1).

5. The gas pressure regulator with a pressure relief function according to claim 1, characterized in that: The air inlet pipe (4) is fixedly welded to the valve body (1). One end of the connecting pipe is fixedly welded to the valve body (1), and the other end of the connecting pipe is fixedly welded to the pressure relief box (3). The exhaust pipe (5) is fixedly welded to the pressure relief box (3).

6. The gas pressure regulator with a pressure relief function according to claim 1, characterized in that: The width of the inner wall of the annular groove (30) is adapted to the width of the outer wall of the sealing cover (31). Near the four corners of the upper surface of the sealing cover (31), through holes (311) are opened. In the through holes (311), fastening bolts (312) are provided. At the positions corresponding to the through holes (311) in the annular groove (30), screw grooves (300) are opened. At the bottom of the sealing cover (31), a rubber gasket (310) is provided. The width of the outer wall of the rubber gasket (310) is adapted to the width of the inner wall of the pressure relief box (3).

7. The gas pressure regulator with a pressure relief function according to claim 1, characterized in that: The outer wall of the baffle plate (32) is fixedly welded to the inner wall of the pressure relief box (3). The support frame (320) is fixedly welded to the baffle plate (32). A through groove (322) is formed at the bottom of the card slot (321). The width of the inner wall of the card slot (321) is adapted to the width of the outer wall of the movable plate (33). The bottom of the movable plate (33) is rotatably connected to the baffle plate (32). A plurality of exhaust grooves (331) are formed at the top of the baffle plate (32). The second springs (330) are arranged at equal intervals. One end of the second spring (330) is fixedly adhered to the movable plate (33), and the other end is fixedly adhered to the support frame (320).

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