Pressure reducing valve of valve instrument gas filter

Abstract

The utility model relates to the technical field of valve instruments, and provides a valve instrument gas filter pressure reducing valve which comprises a valve body, conducting pipes are arranged on the two sides of the valve body respectively, a supporting sleeve is arranged at the bottom end of the valve body, a supporting block is arranged on the inner top wall of the valve body, a filter element is arranged in the supporting sleeve, and the valve instrument gas filter pressure reducing valve is arranged in the supporting sleeve. The filter element can be driven to move downwards by pressing down the valve rod, so that the conducting pipes on the two sides are conducted, gas can flow through the conducting pipes, the filter element is arranged in the valve body, the filter element is arranged in the valve body, the filter element is arranged in the valve body, and the filter element is arranged in the valve body. The filter element and the valve rod can be conveniently connected and fixed through the fixing assembly, the filter element can be taken down from the bottom of the valve rod to be replaced by removing the sealing cover plate from the bottom of the supporting sleeve and adjusting the fixing assembly, and the problem that a filter element in an existing pressure reducing valve is inconvenient to replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve instruments, and specifically, to a valve instrument air filter pressure reducing valve. Background Art

[0002] A pressure reducing valve, also known as a safety valve, is a valve that adjusts the inlet pressure to a preset outlet pressure through the adjustment of its own mechanical components and relies on the energy of the medium itself to automatically maintain the stability of the outlet pressure.

[0003] After retrieval, a valve instrument air filter pressure reducing valve and system described in the patent with the publication number CN215928593U includes a filter pressure reducing valve. The filter pressure reducing valve includes a valve body. A regulating valve rod is arranged at the upper end of the valve body. A diaphragm is arranged inside the valve body. The bottom end of the regulating valve rod contacts the top of the diaphragm. A valve rod is connected to the inner side of the top of the diaphragm. An exhaust pipe is connected to the top end of the diaphragm. A filter element is sleeved on the valve rod. A sliding rod is sleeved at the bottom end of the valve rod. For this valve instrument air filter pressure reducing valve and system, by adding a filter element on the valve rod of the traditional pressure reducing valve, the filtering effect of the system can be further increased, and the fluctuation of the valve operation on the system can also be reduced. By adopting the bypass design method, the flexibility of the system can be effectively improved. When one of the circuits fails, repair operations can be carried out without shutting down the machine.

[0004] However, the above filter pressure reducing valve still has the following problems: The valve instrument air filter pressure reducing valve and system can further increase the filtering effect of the system by adding a filter element on the valve rod of the valve. However, after a long time of filtration, a large amount of filtered impurities adhere to one side of the filter element, resulting in a decrease in the gas passing rate, thereby affecting the normal use of the valve. It is inconvenient to replace the filter element in this pressure reducing valve, thus affecting the normal use of the pressure reducing valve. Summary of the Utility Model

[0005] The utility model provides a valve instrument air filter pressure reducing valve, which solves the problem in the prior art that it is inconvenient to replace the filter element, thereby reducing the overall service life of the pressure reducing valve.

[0006] The technical solution of the utility model is as follows: A valve instrument air filter pressure reducing valve includes a valve body. Conducting pipes are arranged on both sides of the valve body. A support sleeve is arranged at the bottom end of the valve body. A support block is arranged on the inner top wall of the valve body. A filter element is arranged inside the support sleeve. A valve rod is arranged at the top end of the valve body. A fixing component for installing the filter element is arranged at the bottom of the valve rod passing through the support block. A support component for resetting the valve rod is arranged at the top end of the valve body.

[0007] Preferably, the fixing component includes a fixing frame fixedly connected to the bottom end of the valve stem. Both sides of the bottom end of the fixing frame are fixedly connected with connecting sleeves. Installation holes are respectively formed on both sides of the middle part of the filter element. The bottom ends of the connecting sleeves are respectively slidably connected inside the installation holes. The bottom end of the filter element is slidably connected with a fixing plate. Locking rods are rotatably connected to both sides of the fixing plate. The tops of the locking rods are respectively threadedly connected inside the connecting sleeves.

[0008] Preferably, the supporting component includes a closed sleeve fixedly connected to the top end of the valve body. A limiting sleeve is fixedly connected to the inner top wall of the closed sleeve. The valve stem is vertically slidably connected inside the limiting sleeve. A limiting ring is fixedly connected to the middle part of the valve stem and located at the bottom of the limiting sleeve. A first spring is fixedly connected to the bottom end of the limiting ring. The bottom of the first spring is fixedly connected to the top end of the valve body.

[0009] Preferably, limiting grooves are vertically formed on both sides of the inner wall of the limiting sleeve. Limiting blocks are fixedly connected to both sides of the valve stem. The limiting blocks are respectively slidably connected inside the limiting grooves.

[0010] Preferably, a sealing ring is fixedly connected to the bottom end of the supporting sleeve. A closed cover plate is slidably connected to the bottom end of the sealing ring. Fixing bolts are rotatably connected to the four corners of the closed cover plate. The tops of the fixing bolts are respectively threadedly connected to the four corners of the bottom end of the supporting sleeve.

[0011] Preferably, second springs are fixedly connected to both sides of the top end of the closed cover plate. The tops of the second springs are respectively slidably connected to the bottom end of the fixing plate.

[0012] Preferably, a sealing sleeve is fixedly connected to the middle part of the supporting block. The bottom end of the valve stem is slidably connected inside the sealing sleeve.

[0013] Preferably, connecting plates are fixedly connected to one side of each conduction pipe.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In the present utility model, by pressing down the valve stem, the filter element can be driven to move downward, so that the two conduction pipes are conducted, enabling gas to flow through the conduction pipes. Through the fixing component, the filter element can be conveniently connected and fixed to the valve stem. By removing the closed cover plate from the bottom of the supporting sleeve and adjusting the fixing component, the filter element can be removed from the bottom of the valve stem for replacement, solving the problem that the filter element inside the existing pressure reducing valve is inconvenient to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further elaborates the present utility model in detail in conjunction with the drawings and specific embodiments.

[0017] Figure 1Schematic diagram of the structure of a valve instrument air filter pressure reducing valve proposed by the present utility model;

[0018] Figure 2 Schematic diagram of the cross-sectional structure in the middle proposed by the present utility model;

[0019] Figure 3 Schematic diagram of the structure of the fixing component proposed by the present utility model;

[0020] Figure 4 Schematic diagram of the structure of the support component proposed by the present utility model;

[0021] In the figure: 1, valve body; 2, conduction pipe; 3, connecting plate; 4, support sleeve; 5, closed cover plate; 6, support component; 61, closed sleeve; 62, limit sleeve; 63, limit ring; 64, first spring; 65, limit groove; 66, limit block; 7, valve stem; 8, fixing component; 81, fixing frame; 82, connecting sleeve; 83, fixing plate; 84, locking rod; 85, mounting hole; 9, filter element; 10, sealing sleeve; 11, support block; 12, second spring; 13, sealing ring; 14, fixing bolt. Specific implementation manners

[0022] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0023] Please refer to Figure 1 With Figure 2, the present utility model provides a technical solution for a valve instrument air filter pressure reducing valve: A valve instrument air filter pressure reducing valve includes a valve body 1. On both sides of the valve body 1, conduction pipes 2 are provided. On one side of each conduction pipe 2, a connecting plate 3 is fixedly connected. At the bottom end of the valve body 1, a support sleeve 4 is provided. On the inner top wall of the valve body 1, a support block 11 is provided. Inside the support sleeve 4, a filter element 9 is provided. At the top end of the valve body 1, a valve rod 7 is provided. In the middle of the support block 11, a sealing sleeve 10 is fixedly connected. The bottom of the valve rod 7 is slidably connected inside the sealing sleeve 10. Through the sealing sleeve 10, the gap between the valve rod 7 and the support block 11 can be sealed to prevent the pressure inside the valve body 1 from changing. At the bottom of the valve rod 7, a fixing component 8 for installing the filter element 9 is provided through the support block 11. At the top end of the valve body 1, a support component 6 for resetting the valve rod 7 is provided. At the bottom end of the support sleeve 4, a sealing ring 13 is fixedly connected. The bottom end of the sealing ring 13 is slidably connected with a closing cover plate 5. At the four corners of the closing cover plate 5, fixing bolts 14 are rotatably connected. The tops of the fixing bolts 14 are threadedly connected to the four corners at the bottom end of the support sleeve 4. On both sides of the top end of the closing cover plate 5, second springs 12 are fixedly connected. The tops of the second springs 12 are slidably connected with the bottom end of a fixing plate 83. Through the closing cover plate 5, the bottom of the support sleeve 4 can be closed.

[0024] Please refer to Figure 3 , the fixing component 8 includes a fixing frame 81 fixedly connected to the bottom end of the valve rod 7. On both sides of the bottom end of the fixing frame 81, connecting sleeves 82 are fixedly connected. On both sides of the middle of the filter element 9, installation holes 85 are provided. The bottom ends of the connecting sleeves 82 are respectively slidably connected inside the installation holes 85. The bottom end of the filter element 9 is slidably connected with a fixing plate 83. On both sides of the fixing plate 83, locking rods 84 are rotatably connected. The tops of the locking rods 84 are threadedly connected inside the connecting sleeves 82. By reversely rotating the locking rods 84 for reverse thread transmission with the connecting sleeves 82, the locking rods 84 can be taken out from the inside of the installation holes 85, releasing the fixation of the filter element 9, and the filter element 9 can be taken out from inside the fixing frame 81 for replacement, and then the replaced filter element 9 can be fixed by the locking rods 84.

[0025] Please refer to Figure 4, the support component 6 includes a closed sleeve 61 fixedly connected to the top end of the valve body 1. The inner top wall of the closed sleeve 61 is fixedly connected with a limit sleeve 62. The valve stem 7 is vertically slidably connected inside the limit sleeve 62. In the middle of the valve stem 7 and at the bottom of the limit sleeve 62, a limit ring 63 is fixedly connected. The bottom end of the limit ring 63 is fixedly connected with a first spring 64. The bottom of the first spring 64 is fixedly connected to the top end of the valve body 1. On both sides of the inner wall of the limit sleeve 62, limit grooves 65 are vertically opened. On both sides of the valve stem 7, limit blocks 66 are fixedly connected. The limit blocks 66 are respectively slidably connected inside the limit grooves 65. By the upward push of the first spring 64 on the limit ring 63, the valve stem 7 and the filter element 9 can be driven to reset. And by the sliding of the limit blocks 66 inside the limit grooves 65, the relative rotation between the valve stem 7 and the valve body 1 can be prevented.

[0026] The working principle and usage process of the present utility model are as follows: By pressing down the valve stem 7, the fixed frame 81 is driven to separate from the support block 11, so that the inside of the valve body 1 is communicated with the conduction pipes 2 on both sides. By the upward push of the first spring 64 on the limit ring 63, the valve stem 7 and the filter element 9 can be driven to reset. And by the sliding of the limit blocks 66 inside the limit grooves 65, the relative rotation between the valve stem 7 and the valve body 1 can be prevented. And by removing the fixing bolt 14 from the bottom of the support sleeve 4, the closed cover plate 5 can be removed from the bottom of the support sleeve 4. Then, by reversely rotating the locking rod 84 for reverse thread transmission with the connecting sleeve 82, the locking rod 84 can be taken out from the inside of the mounting hole 85, releasing the fixation of the filter element 9. The filter element 9 can be taken out from the inside of the fixed frame 81 for replacement. Then, the replaced filter element 9 is fixed by the locking rod 84. Then, the closed cover plate 5 is installed at the bottom of the support sleeve 4 for sealing.

[0027] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A valve instrument air filter pressure reducing valve, comprising a valve body (1), characterized in that: A guide tube (2) is provided on both sides of the valve body (1); a support sleeve (4) is provided at the bottom end of the valve body (1); a support block (11) is provided on the inner top wall of the valve body (1); a filter element (9) is provided inside the support sleeve (4); a valve stem (7) is provided at the top end of the valve body (1); a fixing component (8) capable of mounting the filter element (9) is provided at the bottom of the valve stem (7) through the support block (11); and a support component (6) capable of resetting the valve stem (7) is provided at the top end of the valve body (1).

2. The valve instrument air filter pressure reducing valve according to claim 1, characterized in that: The fixing assembly (8) comprises a fixing frame (81) fixedly connected to the bottom end of the valve stem (7), and connecting sleeves (82) are fixedly connected to both sides of the bottom end of the fixing frame (81), and mounting holes (85) are opened on both sides of the middle part of the filter element (9), and the bottom ends of the connecting sleeves (82) are respectively slidably connected to the inside of the mounting holes (85), and the bottom end of the filter element (9) is slidably connected to a fixing plate (83), and locking rods (84) are rotatably connected to both sides of the fixing plate (83), and the top of the locking rods (84) are threadedly connected to the inside of the connecting sleeve (82).

3. The valve instrument air filter pressure reducing valve according to claim 1, characterized in that: The support assembly (6) comprises a sealing sleeve (61) fixedly connected to the top end of the valve body (1); the inner top wall of the sealing sleeve (61) is fixedly connected to a limiting sleeve (62); the valve stem (7) is vertically slidably connected to the inside of the limiting sleeve (62); a limiting ring (63) is fixedly connected to the middle of the valve stem (7) and located at the bottom of the limiting sleeve (62); the bottom end of the limiting ring (63) is fixedly connected to a first spring (64); and the bottom of the first spring (64) is fixedly connected to the top end of the valve body (1).

4. The valve instrument air filter pressure reducing valve according to claim 3, characterized in that: Limiting grooves (65) are vertically provided on both sides of the inner wall of the limiting sleeve (62), and limiting blocks (66) are fixedly connected to both sides of the valve stem (7), and the limiting blocks (66) are slidably connected to the inside of the limiting grooves (65).

5. The valve instrument air filter pressure reducing valve according to claim 1, characterized in that: The bottom end of the support sleeve (4) is fixedly connected to a sealing ring (13), the bottom end of the sealing ring (13) is slidably connected to a closed cover plate (5), the four corners of the closed cover plate (5) are rotatably connected to fixing bolts (14), and the tops of the fixing bolts (14) are threadedly connected to the four corners of the bottom end of the support sleeve (4).

6. The valve instrument air filter pressure reducing valve according to claim 5, characterized in that: Second springs (12) are fixedly connected to both sides of the top end of the closing cover plate (5), and the top ends of the second springs (12) are slidably connected to the bottom ends of the fixing plates (83).

7. The valve instrument air filter pressure reducing valve according to claim 1, characterized in that: A sealing sleeve (10) is fixedly connected to the middle of the support block (11), and a bottom of the valve stem (7) is slidably connected to the inside of the sealing sleeve (10).

8. The valve instrument air filter pressure reducing valve according to claim 1, characterized in that: One side of the conducting tube (2) is fixedly connected to a connecting plate (3).

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