High-pressure gas pressure reducing valve

Abstract

The utility model relates to the technical field of pressure reducing valves, in particular to a high-pressure gas pressure reducing valve which is characterized in that an adjusting rod is arranged on a pressing plate; a plurality of limiting holes are formed in the upper surface of the pressure reducing valve body; the pressure reducing valve has the beneficial effects that in the initial state, the sealing gasket fixedly connected to the lower sliding block makes contact with a pipe opening located in an inner cavity of the pressure reducing valve body, the adjusting rod is rotated to rotate along the threaded hole formed in the pressing plate, and then the pressing plate and the connecting rod can move along the connecting hole; the connecting rod moves up and down along the connecting hole to change the tightness degree of the spring between the two connecting plates, the pressure of the spring on the contact rod and the sliding block is changed, the initial pressure of high-pressure gas entering the pressure relief pipe is changed, and then the pressure relief threshold value of the pressure relief valve body on the high-pressure gas is changed so as to adapt to different high-pressure air pressure devices. And actual use by workers is facilitated, adjustment by workers is facilitated, and the device can adapt to work in different scenes and is high in practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pressure reducing valve, concretely to a high pressure gas pressure reducing valve. BACKGROUND

[0002] The pressure reducing valve is a valve that reduces the inlet pressure to a desired outlet pressure by adjusting and relies on the energy of the medium itself to automatically maintain the outlet pressure stable. From the viewpoint of fluid mechanics, the pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and kinetic energy of the fluid are changed to cause different pressure losses, thereby achieving the purpose of pressure reduction.

[0003] In the prior art, the high pressure gas pressure reducing valve is usually used in high pressure equipment, and the high pressure gas pressure reducing valve can avoid the damage caused by the direct inflow of high pressure gas into the high pressure equipment.

[0004] However, the existing high pressure gas pressure reducing valve can not be adjusted in the working process, and the minimum pressure required by different equipment for work is not the same. The high pressure gas cannot be adjusted after passing through the pressure reducing valve, so that the pressure reducing valve is difficult to adapt to different scenes, and different pressure reducing valves need to be replaced for different equipment, which has low practicability. TECHNICAL CONTENT

[0005] The utility model aims at providing a high pressure gas pressure reducing valve to solve the problems in the background art.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme: a high pressure gas pressure reducing valve, the high pressure gas pressure reducing valve includes: a pressure plate, an adjusting rod is arranged on the pressure plate, a connecting rod is arranged at the bottom of the pressure plate;

[0007] A pressure reducing valve body, a plurality of limiting holes are arranged on the upper surface of the pressure reducing valve body, and a sliding groove is arranged in the pressure reducing valve body.

[0008] Preferably, the lower end of the adjusting rod is rotatably connected with the mounting plate, the adjusting rod is threadedly connected with the threaded hole arranged on the pressure plate, the bottom surface of the pressure plate is fixedly connected with a fixed rod, and the fixed rod is fixedly connected with the indicating plate.

[0009] Preferably, the connecting rod is fixedly connected with the pressure plate, the connecting rod is fixedly connected with the connecting plate by penetrating the connecting hole arranged on the mounting cylinder, the connecting rod can slide along the connecting hole, and the connecting hole is in a circular groove structure.

[0010] Preferably, a sliding block is arranged in the sliding groove, a plurality of contact rods are fixedly connected with the sliding block, a sealing gasket is fixedly connected with the bottom of the sliding block, and the sealing gasket is in contact with the pipe opening at one end of the pressure relief pipe.

[0011] Preferably, the connecting plate has a circular plate structure and is disposed in the inner cavity of the mounting cylinder. The connecting plate can slide in the inner cavity of the mounting cylinder. The connecting plate is fixedly connected to the spring, and the other end of the spring is fixedly connected to the connecting plate.

[0012] Preferably, the other end of the contact rod passes through the limiting hole opened on the pressure reducing valve body and contacts the end face of the connecting plate fixedly connected to one end of the spring. The contact rod can slide along the limiting hole opened on the pressure reducing valve body, and a connecting pipe is fixedly connected to the pressure reducing valve body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The high-pressure gas pressure reducing valve proposed in this utility model has a sealing gasket fixedly connected to the slider in the initial state, which contacts the pipe opening located in the inner cavity of the pressure reducing valve body. By rotating the adjusting rod, which rotates along the threaded hole in the pressure plate, the pressure plate and the connecting rod can be moved along the connecting hole. The up and down movement of the connecting rod along the connecting hole can change the tension of the spring between the two connecting plates, thereby changing the pressure of the spring on the contact rod and the slider, changing the initial pressure of the high-pressure gas entering the pressure relief pipe, and thus changing the pressure relief threshold of the pressure reducing valve body for high-pressure gas. This allows it to adapt to different high-pressure gas equipment, making it convenient for operators to use and adjust. The device can adapt to different working scenarios and is highly practical. By unscrewing and removing the bolts on the mounting plate, and rotating the mounting cylinder one by one along the threaded hole in the pressure reducing valve body, the mounting plate and mounting cylinder can be removed, allowing operators to maintain it without disassembling the entire pressure reducing valve body, which is convenient for operators to maintain later. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a partial structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 5 This is a partial schematic diagram of the structure of this utility model;

[0020] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0021] Figure 7 This is a schematic diagram of part of the structure of this utility model;

[0022] Figure 8 For Figure 7 Amplification structure schematic view at C.

[0023] In the figure: 1, the pressing plate; 2, the pressure reducing valve body; 3, the adjusting rod; 4, the fixed rod; 5, the connecting rod; 6, the limiting hole; 7, the connecting pipe; 8, the pressure relief pipe; 9, the sliding groove; 10, the sliding block; 11, the sealing gasket; 12, the contact rod; 13, the mounting plate; 14, the indicating plate; 15, the mounting cylinder; 16, the connecting hole; 17, the connecting plate;

[0024] 18, spring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme of the utility model to carry out clearly, completely describe, and the advantage is more clear and distinct, the following combining with the figure to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, instead of all the embodiments, only to explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without doing the creative work, belong to the scope of the protection of the utility model.

[0026] Embodiment one

[0027] Please refer to Figures 1-8 The utility model provides a technical scheme: a high pressure gas pressure reducing valve, the high pressure gas pressure reducing valve includes: the pressing plate 1 is provided with the adjusting rod 3 on the pressing plate 1, and the pressing plate 1 bottom is provided with the connecting rod 5;Pressure reducing valve body 2, the upper surface of pressure reducing valve body 2 is provided with a plurality of limiting holes 6, and the pressure reducing valve body 2 is provided with a sliding groove 9 in;

[0028] Specific use, staff will install the cylinder 15 lower end with the threaded hole opened on the upper surface of pressure reducing valve body 2 alignment installation, rotates the installation cylinder 15 to make it along the threaded hole opened on the upper surface of pressure reducing valve body 2 rotation, installs the cylinder 15 on the pressure reducing valve body 2, the hole opened on the mounting plate 13 is aligned with the threaded hole opened on the upper surface of pressure reducing valve body 2, and the bolt is threaded connection with the threaded hole opened on the upper surface of pressure reducing valve body 2 by penetrating the hole opened on the mounting plate 13, and the mounting plate 13 is fixed on the pressure reducing valve body 2.

[0029] Embodiment two

[0030] On the basis of embodiment one, in order to facilitate the staff to use the setting has the adjusting rod 3, adjusting rod 3 lower end and mounting plate 13 rotationally connected, adjusting rod 3 and the threaded hole of the upper opening of the pressing plate 1 is screwed, the bottom surface of the pressing plate 1 is fixedly connected with the fixed rod 4, the fixed rod 4 is fixedly connected with the indicating plate 14, rotating the adjusting rod 3, the screw thread on the adjusting rod 3 is rotated along the threaded hole of the upper opening of the pressing plate 1, the connecting rod 5 is fixedly connected with the pressing plate 1, the connecting rod 5 is fixedly connected with the connecting plate 17 through the connecting hole 16 of the upper opening of the mounting cylinder 15, the connecting rod 5 can slide along the connecting hole 16, the connecting hole 16 is circular groove structure, the pressing plate 1 and the connecting rod 5 move up and down along the connecting hole 16 of the upper opening of the mounting cylinder 15, the fixed rod 4 and the indicating plate 14 move with it, the connecting plate 17 is circular plate structure, the connecting plate 17 is arranged in the inner cavity of the mounting cylinder 15, the connecting plate 17 can slide in the inner cavity of the mounting cylinder 15, the connecting plate 17 is fixedly connected with the spring 18, the other end of the spring 18 is fixedly connected with the connecting plate 17, the connecting rod 5 moves up and down along the connecting hole 16 of the upper opening of the mounting cylinder 15, which can make the spring 18 between the two connecting plates 17 contract or elongate, change the pressure of the spring 18 on the upper surface of the contact rod 12, the sliding groove 9 is provided with a sliding block 10, the sliding block 10 is fixedly connected with a plurality of contact rods 12, the bottom of the sliding block 10 is fixedly connected with a sealing gasket 11, the sealing gasket 11 is in contact with the pipe opening of one end of the pressure relief pipe 8, the high pressure gas enters the inner cavity of the pressure relief valve body 2 through the connecting pipe 7, when the pressure in the inner cavity of the pressure relief valve body 2 is too large, the pressure will push the sliding block 10 and the sealing gasket 11 to move upwards along the sliding groove 9, and the pipe opening of the pressure relief pipe 8 in the inner cavity of the pressure relief valve body 2 will leak out, realizing the pressure relief in the inner cavity of the pressure relief valve body 2, when the pressure meets the mark, the spring 18 relaxes, the movable contact rod 12 moves downwards along the limiting hole 6, the sliding block 10 and the sealing gasket 11 move downwards along the sliding groove 9, the sealing gasket 11 is in contact with the pipe opening of the pressure relief pipe 8, and the pressure relief pipe 8 is blocked, realizing the control of the pressure, the above-mentioned cooperation, the screw thread on the adjusting rod 3 is rotated along the threaded hole of the upper opening of the pressing plate 1, the pressing plate 1 and the connecting rod 5 move along the connecting hole 16 of the upper opening of the mounting cylinder 15, the connecting rod 5 moves up and down along the connecting hole 16 of the upper opening of the mounting cylinder 15, which can make the spring 18 between the two connecting plates 17 elongate and contract, change the pressure of the spring 18 on the upper surface of the contact rod 12, and then change the pressure relief threshold of the pressure relief valve body 2 to high pressure gas, which is convenient for the staff to use.

[0031] Embodiment three

[0032] On the basis of embodiment two, a contact rod 12 is arranged for facilitating the staff to maintain later, the other end of the contact rod 12 penetrates the limiting hole 6 arranged on the pressure relief valve body 2 and contacts the end surface of the connecting plate 17 fixedly connected with one end of the spring 18, the contact rod 12 can slide along the limiting hole 6 arranged on the pressure relief valve body 2, the connecting pipe 7 is fixedly connected to the pressure relief valve body 2, the spring 18 needs to be replaced after a long time of use because of the decrease of elasticity, the staff twists and removes the bolt on the mounting plate 13, twists the mounting cylinder 15 one by one to make it rotate along the threaded hole arranged on the pressure relief valve body 2, the mounting plate 13 and the mounting cylinder 15 can be removed and replaced, without disassembling the pressure relief valve body 2, to facilitate the staff to maintain later.

[0033] In actual use, the sealing gasket 11 fixedly connected to the sliding block 10 contacts the pipe opening in the inner cavity of the pressure relief valve body 2 in the initial state, the adjusting rod 3 is rotated to make it rotate along the threaded hole arranged on the pressure plate 1, the pressure plate 1 and the connecting rod 5 can be moved along the connecting hole 16, the connecting rod 5 can be moved up and down along the connecting hole 16 to change the tightness of the spring 18 between the two connecting plates 17, change the pressure of the spring 18 on the contact rod 12 and the sliding block 10, change the initial pressure of the high-pressure gas entering the pressure relief pipe 8, and then change the pressure relief threshold of the pressure relief valve body 2 to the high-pressure gas, so as to adapt to different high-pressure gas equipment, facilitate the staff to use in practice, facilitate the staff to adjust, so that the device can adapt to work in different scenes, high practicability, the bolt on the mounting plate 13 is twisted and removed, the mounting cylinder 15 is rotated one by one to make it rotate along the threaded hole arranged on the pressure relief valve body 2, the mounting plate 13 and the mounting cylinder 15 are removed, the staff can maintain them, without disassembling the whole pressure relief valve body 2, to facilitate the staff to maintain later.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-pressure gas pressure-reducing valve characterized by comprising: The high-pressure gas pressure reducing valve comprises a pressing plate (1) provided with an adjusting rod (3) and a connecting rod (5) at the bottom of the pressing plate (1); A pressure reducing valve body (2) is provided with a plurality of limiting holes (6) on the upper surface, and a sliding groove (9) is formed in the pressure reducing valve body (2); The lower end of the adjusting rod (3) is rotatably connected with the mounting plate (13), the adjusting rod (3) is threadedly connected with the threaded hole formed in the pressing plate (1), the bottom surface of the pressing plate (1) is fixedly connected with a fixing rod (4), the fixing rod (4) is fixedly connected with an indicating plate (14), the connecting rod (5) is fixedly connected with the pressing plate (1), the connecting rod (5) penetrates through the connecting hole (16) formed in the mounting cylinder (15) and is fixedly connected with the connecting plate (17), the connecting rod (5) can slide along the connecting hole (16), the connecting hole (16) is in a circular groove structure, the connecting plate (17) is in a circular plate structure, the connecting plate (17) is arranged in the inner cavity of the mounting cylinder (15) and can slide in the inner cavity of the mounting cylinder (15), the connecting plate (17) is fixedly connected with the spring (18), and the other end of the spring (18) is fixedly connected with the connecting plate (17).

2. A high-pressure gas pressure-reducing valve according to claim 1, characterized by: The sliding groove (9) is provided with a sliding block (10), the sliding block (10) is fixedly connected with a plurality of contact rods (12), the bottom of the sliding block (10) is fixedly connected with a sealing gasket (11), and the sealing gasket (11) is in contact with the pipe opening at one end of the pressure relief pipe (8).

3. A high-pressure gas pressure-reducing valve according to claim 2, characterized by: The other end of the contact rod (12) penetrates through the limiting hole (6) formed in the pressure reducing valve body (2) and is in contact with the end surface of the connecting plate (17) fixedly connected with one end of the spring (18), the contact rod (12) can slide along the limiting hole (6) formed in the pressure reducing valve body (2), and the pressure reducing valve body (2) is fixedly connected with a connecting pipe (7).

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