A double-sealed piston flow and pressure regulating valve

Abstract

The present invention discloses a double-sealed piston type flow and pressure regulating valve, comprising a valve body, wherein two ends of the valve body are respectively provided with a liquid inlet and a liquid outlet, an upper arc-shaped guide plate is symmetrically arranged on the top of the inner wall of the valve body, a fixed base is fixedly arranged at the center of the bottom of the inner wall of the valve body, lower arc-shaped guide plates are arranged on both sides of the fixed base, an opening is arranged between the upper arc-shaped guide plate and the lower arc-shaped guide plate, and an adjusting sealing device is arranged on the opening, the adjusting sealing device comprises a connecting tube, a threaded hole is arranged on the connecting tube, a threaded rod is penetrated through the threaded hole, a sealing block is connected to the bottom end of the threaded rod through a bearing sleeve, the sealing block is matched with the opening, and a fixing plate is fixedly arranged in the connecting tube, and the beneficial effects are as follows: such a device has a simple structure and is easy to use, and the water pressure can be adjusted from both sides respectively, and the sealing effect is good. If any one of them has a problem, the other one can still work.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a double-sealed piston type flow and pressure regulating valve. Background Art

[0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. A valve is a control component in a pipeline fluid delivery system. A valve can be used to control the flow of various types of fluids, such as air, water, steam, various corrosive media, mud, oil, etc. It is used to change the cross-section of the passage and the direction of medium flow, and has functions such as diversion, cutoff, throttling, check, diversion, or overflow pressure relief. Valves used for fluid control come in a wide variety of varieties and specifications, from the simplest stop valve to various valves used in extremely complex automatic control systems.

[0003] The current flow and pressure regulating valves often experience unstable operation, noise, vibration, cavitation, and serious damage to the sealing position during operation. In addition, the existing flow and pressure regulating valves all adopt a single sealing structure, which means that once there is a problem with the sealing structure, the valve will inevitably be unusable, thus affecting people's lives and production.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a double-sealed piston flow and pressure regulating valve to overcome the above-mentioned technical problems existing in the existing related art.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A double-sealed piston flow and pressure regulating valve, comprising a valve body, wherein two ends of the valve body are respectively provided with a liquid inlet and a liquid outlet, an upper arc-shaped guide plate is symmetrically arranged on the top of the inner wall of the valve body, a fixed base is fixedly arranged at the center of the bottom of the inner wall of the valve body, lower arc-shaped guide plates are arranged on both sides of the fixed base, an opening is arranged between the upper arc-shaped guide plate and the lower arc-shaped guide plate, and an adjusting sealing device is arranged on the opening, the adjusting sealing device comprises a connecting cylinder, a threaded hole is arranged on the connecting cylinder, a threaded rod is penetrated in the threaded hole, a sealing block is connected to the bottom end of the threaded rod through a bearing sleeve, the sealing block is matched with the opening, a fixing plate is fixed in the connecting cylinder, a through hole through which the threaded rod penetrates is arranged at the center of the fixing plate, a sealing cavity matching the sealing block is formed below the fixing plate, two guide holes are symmetrically arranged on the fixing plate, and guide rods penetrating the guide holes are symmetrically arranged on the sealing block.

[0008] Furthermore, a pressure sensor is provided in the valve body between the regulating sealing devices, and a pressure gauge is connected to the pressure sensor.

[0009] Furthermore, arc-shaped plates are provided on both sides of the outer wall of the fixed base.

[0010] Furthermore, a rotating handle is fixedly provided on the top of the threaded rod, and an anti-slip thread is provided on the rotating handle.

[0011] Furthermore, a positioning ring is provided in the opening.

[0012] Furthermore, the sealing block comprises a fixed bottom plate, an elastic pad is provided on the fixed bottom plate, and an upper fixed plate is provided on the elastic pad.

[0013] Furthermore, a mounting plate 1 and a mounting plate 2 are respectively provided at both ends of the liquid inlet and the liquid outlet.

[0014] The present invention provides a double-sealed piston flow regulating and pressure regulating valve, which has the following beneficial effects:

[0015] (1) An upper arc guide plate is symmetrically arranged on the top of the inner wall of the valve body, a fixed base is fixedly arranged at the center of the bottom of the inner wall of the valve body, lower arc guide plates are arranged on both sides of the fixed base, an opening is arranged between the upper arc guide plate and the lower arc guide plate, and an adjustment sealing device is arranged on the opening, the adjustment sealing device includes a connecting tube, a threaded hole is opened on the connecting tube, a threaded rod is passed through the threaded hole, a sealing block is connected to the bottom end of the threaded rod through a bearing sleeve, the sealing block matches the opening, a fixing plate is fixedly arranged in the connecting tube, a through hole through which the threaded rod passes is arranged at the center of the fixing plate, a sealing cavity matching the sealing block is formed below the fixing plate, and a through hole through which the threaded rod passes is arranged on the fixing plate Two guide holes are provided, and guide rods penetrating the guide holes are symmetrically arranged on the sealing block. When in use, the threaded rods at either end of the liquid inlet and the liquid outlet can be rotated as needed, and the sealing block can seal the opening by utilizing the effect of the threaded holes and the rotation of the inner ring of the bearing sleeve. The guide rods and the guide holes can effectively prevent the sealing block from rotating, and the descending sealing block will contact the positioning ring. The elastic pad can provide a certain prestress to buffer the water pressure. Such a device has a simple structure and is easy to use. The water pressure can be adjusted from both sides respectively, and the sealing effect is good. If any one of them has a problem, the other can still work.

[0016] (2) A pressure sensor is provided in the valve body between the regulating sealing devices, and a pressure gauge is connected to the pressure sensor to facilitate detection of the pressure in the valve body.

[0017] (3) Curved plates are provided on both sides of the outer wall of the fixed base to guide the water flow.

[0018] (4) A rotating handle is fixedly provided at the top of the threaded rod, and the rotating handle is provided with anti-slip threads to facilitate the rotation of the threaded rod.

[0019] (5) A positioning ring is provided in the opening to facilitate the positioning of the sealing block.

[0020] (6) The sealing block includes a fixed bottom plate, on which an elastic pad is provided, and on which an upper fixed plate is provided, so as to reduce the water pressure on the sealing block and improve the sealing performance.

[0021] (7) A mounting plate 1 and a mounting plate 2 are respectively provided at both ends of the liquid inlet and the liquid outlet to facilitate the installation and fixation of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 2 is a front view of a double-sealed piston-type flow and pressure regulating valve according to an embodiment of the present invention;

[0024] Figure 2 2 is a schematic structural diagram of a double-sealed piston-type flow and pressure regulating valve according to an embodiment of the present invention;

[0025] Figure 3 A structural schematic diagram of a regulating seal device in a double-sealed piston-type flow and pressure regulating valve according to an embodiment of the present invention;

[0026] Figure 4 The present invention is a schematic structural diagram of a sealing block in a double-sealed piston type flow and pressure regulating valve according to an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Valve body; 2. Liquid inlet; 3. Liquid outlet; 4. Upper arc guide plate; 5. Fixed base; 6. Lower arc guide plate; 7. Opening; 8. Adjustment sealing device; 9. Connecting tube; 10. Threaded hole; 11. Threaded rod; 12. Bearing sleeve; 13. Sealing block; 14. Fixed plate; 15. Through hole; 16. Sealing cavity; 17. Guide hole; 18. Guide rod; 19. Pressure sensor; 20. Pressure gauge; 21. Arc plate; 22. Turning handle; 23. Positioning ring; 24. Fixed bottom plate; 25. Elastic pad; 26. Fixed plate; 27. Mounting plate 1; 28. Mounting plate 2. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 belong to the scope of protection of the present invention.

[0030] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0031] Embodiment 1:

[0032] See also Figure 1-4 A double-sealed piston-type flow regulating and pressure regulating valve according to an embodiment of the present invention comprises a valve body 1, wherein two ends of the valve body 1 are respectively provided with a liquid inlet 2 and a liquid outlet 3, an upper arc-shaped guide plate 4 is symmetrically arranged on the top of the inner wall of the valve body 1, a fixed base 5 is fixedly arranged at the center of the bottom of the inner wall of the valve body 1, lower arc-shaped guide plates 6 are arranged on both sides of the fixed base 5, an opening 7 is arranged between the upper arc-shaped guide plate 4 and the lower arc-shaped guide plate 6, and an adjusting sealing device 8 is arranged on the opening 7, and the adjusting sealing device 8 comprises a connecting tube 9, and the connecting tube 9 has a A threaded hole 10 is provided, a threaded rod 11 is passed through the threaded hole 10, a sealing block 13 is connected to the bottom end of the threaded rod 11 through a bearing sleeve 12, the sealing block 13 matches the opening 7, a fixing plate 14 is fixedly provided in the connecting tube 9, a through hole 15 through which the threaded rod 11 passes is provided at the center of the fixing plate 14, a sealing cavity 16 matching the sealing block 13 is formed below the fixing plate 14, two guide holes 17 are symmetrically provided on the fixing plate 14, and guide rods 18 passing through the guide holes 17 are symmetrically provided on the sealing block 13.

[0033] According to the above scheme of the present invention, an upper arc guide plate 4 is symmetrically provided on the top of the inner wall of the valve body 1, a fixed base 5 is fixedly provided at the center of the bottom of the inner wall of the valve body 1, lower arc guide plates 6 are provided on both sides of the fixed base 5, an opening 7 is provided between the upper arc guide plate 4 and the lower arc guide plate 6, and an adjusting sealing device 8 is provided on the opening 7, and the adjusting sealing device 8 includes a connecting tube 9, a threaded hole 10 is provided on the connecting tube 9, a threaded rod 11 is penetrated in the threaded hole 10, and a sealing block 13 is connected to the bottom end of the threaded rod 11 through a bearing sleeve 12, and the sealing block 13 matches the opening 7, a fixing plate 14 is fixedly provided in the connecting tube 9, a through hole 15 through which the threaded rod 11 penetrates is provided at the center of the fixing plate 14, and a through hole 15 which is formed below the fixing plate 14 and is connected to the fixing plate 14. The sealing block 13 matches the sealing cavity 16, and two guide holes 17 are symmetrically provided on the fixing plate 14. The sealing block 13 is symmetrically provided with guide rods 18 that penetrate the guide holes 17. When in use, the threaded rod 11 at any end of the liquid inlet 2 and the liquid outlet 3 can be rotated as needed. The sealing block 13 can seal the opening 7 by utilizing the effect of the threaded hole 10 and the rotation of the inner ring of the bearing sleeve 12. The sealing block 13 can be effectively prevented from rotating by utilizing the effect of the guide rod 18 and the guide hole 17. The descending sealing block 13 will contact the positioning ring 23. The elastic pad 25 can provide a certain prestress to buffer the water pressure. Such a device has a simple structure and is easy to use. The water pressure can be adjusted from both sides respectively, and the sealing effect is good. If any one of them has a problem, the other can still work.

[0034] Embodiment 2:

[0035] like Figure 1-4 As shown, a pressure sensor 19 is provided between the regulating sealing device 8 in the valve body 1, and a pressure gauge 20 is connected to the pressure sensor 19 to facilitate the detection of the pressure in the valve body 1; arc-shaped plates 21 are provided on both sides of the outer wall of the fixed base 5 to guide the water flow; a rotating handle 22 is fixedly provided on the top of the threaded rod 11, and the rotating handle 22 is provided with anti-slip threads to facilitate the rotation of the threaded rod 11; a positioning ring 23 is provided in the opening 7 to facilitate the limiting of the sealing block 13; the sealing block 13 includes a fixed bottom plate 24, an elastic pad 25 is provided on the fixed bottom plate 24, and an upper fixed plate 26 is provided on the elastic pad 25 to reduce the water pressure it is subjected to and increase the sealing performance; the two ends of the liquid inlet 2 and the liquid outlet 3 are respectively provided with a mounting plate 1 27 and a mounting plate 2 28 to facilitate the installation and fixation of the valve body 1.

[0036] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0037] In actual application, when in use, the threaded rod 11 at any end of the liquid inlet 2 and the liquid outlet 3 can be rotated as needed, and the threaded hole 10 is used to cooperate with the rotation of the inner ring of the bearing sleeve 12, so that the sealing block 13 can seal the opening 7, and the guide rod 18 and the guide hole 17 are used to effectively prevent the sealing block 13 from rotating. The descending sealing block 13 will contact the positioning ring 23, and the elastic pad 25 is used to provide a certain prestress to buffer the water pressure. Such a device has a simple structure and is easy to use. The water pressure can be adjusted from both sides respectively, and the sealing effect is good. If any one of them has a problem, the other can still work.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sealed piston flow and pressure regulating valve, characterized in that: The valve body (1) comprises a valve body (1), wherein two ends of the valve body (1) are respectively provided with a liquid inlet (2) and a liquid outlet (3), an upper arc-shaped guide plate (4) is symmetrically provided at the top of the inner wall of the valve body (1), a fixed base (5) is fixedly provided at the center of the bottom of the inner wall of the valve body (1), lower arc-shaped guide plates (6) are provided on both sides of the fixed base (5), an opening (7) is provided between the upper arc-shaped guide plate (4) and the lower arc-shaped guide plate (6), and an adjusting sealing device (8) is provided on the opening (7), and the adjusting sealing device (8) comprises a connecting tube (9), and a threaded hole (10) is provided on the connecting tube (9), and the threaded hole (10) is provided on the connecting tube (9). A threaded rod (11) is provided in the hole (10) and penetrates therein. The bottom end of the threaded rod (11) is connected to a sealing block (13) via a bearing sleeve (12). The sealing block (13) matches the opening (7). A fixing plate (14) is fixed in the connecting tube (9). A through hole (15) through which the threaded rod (11) penetrates is provided at the center of the fixing plate (14). A sealing cavity (16) matching the sealing block (13) is formed below the fixing plate (14). Two guide holes (17) are symmetrically provided on the fixing plate (14). Guide rods (18) penetrating the guide holes (17) are symmetrically provided on the sealing block (13). Both sides of the outer wall of the fixed base (5) are provided with arc-shaped plates (21); a positioning ring (23) is provided in the opening (7); the sealing block (13) comprises a fixed bottom plate (24), an elastic pad (25) is provided on the fixed bottom plate (24), and an upper fixed plate (26) is provided on the elastic pad (25); both sides of the outer wall of the fixed base (5) are provided with arc-shaped plates (21) to guide the water flow; When in use, the threaded rod (11) at any one end of the liquid inlet (2) and the liquid outlet (3) is rotated, and the sealing block (13) is sealed against the opening (7) by utilizing the function of the threaded hole (10) and the function of the inner ring of the bearing sleeve (12) rotating. The sealing block (13) is prevented from rotating by utilizing the function of the guide rod (18) and the guide hole (17). The descending sealing block (13) will abut against the positioning ring (23). The elastic pad (25) is used to provide prestress, thereby buffering the water pressure.

2. A double-sealed piston flow and pressure regulating valve according to claim 1, characterized in that: A pressure sensor (19) is provided in the valve body (1) between the regulating sealing device (8), and a pressure gauge (20) is connected to the pressure sensor (19).

3. A double-sealed piston flow and pressure regulating valve according to claim 1, characterized in that: A rotating handle (22) is fixedly provided on the top of the threaded rod (11), and an anti-slip thread is provided on the rotating handle (22).

4. A double-sealed piston flow and pressure regulating valve according to claim 1, characterized in that: A mounting plate 1 (27) and a mounting plate 2 (28) are respectively provided at both ends of the liquid inlet (2) and the liquid outlet (3).

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