Extra-high pressure self-sealing regulating valve

Abstract

The utility model discloses an extra-high pressure self-sealing regulating valve, which relates to the technical field of valves, and comprises a valve body, a connecting pipe is arranged below the valve body, a valve rod is arranged at the inner top end of the valve body at the position of the connecting pipe, a valve clack is fixed at the bottom of the valve rod, and the valve clack is inserted between sealing pieces in the connecting pipe. A discharging pipe is arranged at the bottom, located between the sealing pieces, of the connecting pipe, a filtering tank is arranged below the discharging pipe, a sealing flange is arranged between the discharging pipe and the filtering tank, and when the valve rod drives the valve clack to be inserted into the position between the sealing pieces and close flow, particles can be pressed into the discharging pipe, so that the particles are discharged out of the discharging pipe. At the moment, some fluid and particles can enter the filtering tank through the discharging pipe and are adsorbed by the adsorption material, located between the annular baffle and the filtering net plate, of the filtering tank after penetrating through the filtering net plate, and the problem that the sealing performance is affected due to the fact that the fluid and the particles are blocked at the position between the bottom of the valve rod and the sealing piece is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an ultra-high pressure self-sealing regulating valve. Background Art

[0002] The ultra-high pressure self-sealing regulating valve is a key device used in high-pressure fluid systems. It is used to automatically adjust the opening of the valve to maintain a stable flow of the medium in the pipeline and protect downstream equipment from the invasion of high-pressure fluid. Its working principle is based on the measurement and calculation of fluid mechanics. By measuring and calculating the flow and pressure of the medium in the pipeline, the flow and pressure of the medium can be controlled.

[0003] The UHV self-sealing regulating valve has a self-sealing function. When the valve is closed, there is a tiny gap between the valve disc and the valve seat, forming a sealing sleeve with a certain elasticity. When the medium passes through the valve, a high-pressure area is formed between the valve disc and the valve seat. The pressure in the high-pressure area is transmitted to the valve body through the valve disc and the sealing sleeve at its front end, thereby achieving sealing.

[0004] In the process of implementing the solution, the inventors found that the following problems in the prior art have not been well solved: during the use of the ultra-high pressure self-sealing regulating valve, if the fluid contains impurities or particulate matter, when the valve disc is driven down by the valve stem and inserted between the seals, the particulate matter may be blocked at the bottom of the valve disc and between the seals due to the downward pressure of the valve plate, resulting in the inability to align the valve plate and the seal, causing a loose seal. It is often necessary to disassemble the valve body and then clean the particulate matter that is blocked and blocked inside due to the squeezing of the valve disc. The operation is cumbersome and affects the normal operation of the valve body. Utility Model Content

[0005] The main purpose of the utility model is to provide an ultra-high pressure self-sealing regulating valve, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An ultra-high pressure self-sealing regulating valve comprises a valve body, a connecting pipe is arranged below the valve body, a valve stem is arranged at the internal top end of the valve body located at the connecting pipe position, a valve disc is fixed at the bottom of the valve stem, the valve disc is inserted between the sealing parts inside the connecting pipe, a discharge pipe is arranged at the bottom of the connecting pipe located between the sealing parts, a filter tank is arranged below the discharge pipe, a sealing flange is arranged between the discharge pipe and the filter tank, the discharge pipe and the filter tank are detachably connected via the sealing flange, an annular baffle is welded to the internal bottom end of the filter tank, a filter plate is arranged inside the annular baffle, a traction rod is fixed to the bottom of the traction rod, a bottom plate is fixed to the bottom of the conical plate, a sealing rubber is arranged on the top of the bottom plate, and an annular plugging plate is welded to the internal top end of the discharge pipe.

[0008] Preferably, the outer diameter of the conical plate is smaller than the inner diameter of the annular plugging plate, the outer diameter of the bottom plate matches the outer diameter of the annular plugging plate, and the top of the sealing rubber contacts the bottom of the annular plugging plate.

[0009] Preferably, the inner diameter of the filter tank is larger than the inner diameter of the discharge pipe, and the outer diameter of the bottom plate is smaller than the inner diameter of the filter tank.

[0010] Preferably, the outer wall of the filter plate is threadedly connected to the inner wall of the annular baffle.

[0011] Preferably, the position between the bottom end of the filter tank and the annular baffle and the filter plate is filled with particulate adsorbent.

[0012] Preferably, the conical plate is located above the filter plate, and the two are in a non-contacting state.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When the valve stem drives the valve disc to be inserted between the seals and close the flow, the particles will be pressed down to the inside of the discharge pipe. At this time, some fluid and particles will enter the inside of the filter tank through the discharge pipe, and after passing through the filter plate, they will be adsorbed by the adsorbent filled between the annular baffle and the filter plate of the filter tank, avoiding clogging at the bottom of the valve stem and between the seals, which may affect the sealing performance.

[0015] 2. When the valve stem drives the valve disc to rise and flow occurs, the valve disc will drive the conical plate and the bottom plate to rise through the traction rod. The bottom plate will contact and seal with the bottom of the annular plugging plate in the discharge pipe through the sealing rubber. When the fluid in the connecting pipe passes through the position of the discharge pipe, it will not excessively enter the interior of the filter tank.

[0016] 3. When it is necessary to clean the particulate matter, directly dismantle the sealing flange between the discharge pipe and the filter tank so that the filter tank can be separated from the discharge pipe. At this time, the valve stem is blocked between the seals in the connecting pipe, and there will be no fluid leakage. After the filter tank is disassembled, it can be separated from the annular baffle by rotating the filter plate. Finally, the adsorbent inside it can be replaced to achieve a stronger adsorption effect of particulate matter when it is used next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of the ultra-high pressure self-sealing regulating valve of the utility model;

[0018] Figure 2 It is a schematic cross-sectional structure diagram of a partial valve body and a discharge pipe of the ultra-high pressure self-sealing regulating valve of the utility model;

[0019] Figure 3 It is a schematic cross-sectional view of a partial valve body, a discharge pipe and a filter tank of the ultra-high pressure self-sealing regulating valve of the utility model;

[0020] Figure 4 It is a schematic diagram of the enlarged structure of point A of the ultra-high pressure self-sealing regulating valve of the utility model;

[0021] Figure 5 It is a schematic diagram of the enlarged structure of point B of the ultra-high pressure self-sealing regulating valve of the utility model.

[0022] In the figure: 1. valve body; 11. connecting pipe; 12. sealing member; 13. valve stem; 14. valve disc; 15. traction rod; 16. conical plate; 17. bottom plate; 18. sealing rubber; 2. discharge pipe; 21. annular plugging plate; 3. sealing flange; 4. filter tank; 41. annular baffle; 42. filter screen plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-4As shown, the UHV self-sealing regulating valve comprises a valve body 1, a connecting pipe 11 is arranged below the valve body 1, a valve stem 13 is arranged at the inner top end of the valve body 1 located at the position of the connecting pipe 11, a valve disc 14 is fixed to the bottom of the valve stem 13, the valve disc 14 is inserted between the sealing members 12 inside the connecting pipe 11, a discharge pipe 2 is arranged at the bottom of the connecting pipe 11 located between the sealing members 12, a filter tank 4 is arranged below the discharge pipe 2, a sealing flange 3 is arranged between the discharge pipe 2 and the filter tank 4, the discharge pipe 2 and the filter tank 4 are detachably connected via the sealing flange 3, an annular baffle 41 is welded to the inner bottom end of the filter tank 4, a filter screen plate 42 is arranged inside the annular baffle 41, a traction rod 15 is fixed to the bottom of the valve disc 14, a conical plate 16 is fixed to the bottom of the traction rod 15, a bottom plate 17 is fixed to the bottom of the conical plate 16, a sealing rubber 18 is arranged on the top of the bottom plate 17, and an annular plugging plate 21 is welded to the inner top end of the discharge pipe 2.

[0025] Specifically, the outer diameter of the conical plate 16 is smaller than the inner diameter of the annular plugging plate 21, the outer diameter of the bottom plate 17 matches the outer diameter of the annular plugging plate 21, and the top of the sealing rubber 18 contacts the bottom of the annular plugging plate 21, ensuring that when the valve flap 14 rises, the fluid flowing into the connecting pipe 11 will not excessively enter the interior of the discharge pipe 2 and the filter tank 4.

[0026] Specifically, the outer wall of the filter plate 42 is threadedly connected to the inner wall of the annular baffle 41, so that the adsorbent can be taken out and replaced easily after disassembly.

[0027] Specifically, the position between the bottom end of the filter tank 4 and the annular baffle 41 and the filter screen plate 42 is filled with particulate adsorbent. The material of the adsorbent is selected according to different fluids and flowing objects, and is no longer limited in this application.

[0028] Specifically, the inner diameter of the filter tank 4 is larger than the inner diameter of the discharge pipe 2, the outer diameter of the bottom plate 17 is smaller than the inner diameter of the filter tank 4, the conical plate 16 is located above the filter plate 42, and the two are in a non-contacting state. When the valve flap 14 drops between the seals 12, some fluid and particulate matter pressed downward can pass through the gap between the inner wall of the filter tank 4 and the bottom plate 17, and the mesh holes of the filter plate 42 and be adsorbed by the adsorbent.

[0029] Working principle: When the valve stem 13 drives the valve disc 14 to be inserted between the seals 12 and close the flow, the particles will be pressed down into the inside of the discharge pipe 2. At this time, some fluid and particles will enter the inside of the filter tank 4 through the discharge pipe 2, and after passing through the filter screen plate 42, the particles will be adsorbed by the adsorbent filled between the annular baffle 41 and the filter screen plate 42 of the filter tank 4, avoiding the problem of blocking the bottom of the valve stem 13 and the position between the seals 12, which will affect the sealing performance. When the valve stem 13 drives the valve disc 14 to rise and flow, the valve disc 14 will drive the conical plate 16 and the bottom plate 17 to rise through the traction rod 15, and the bottom plate 17 will be connected to the discharge pipe 2 through the sealing rubber 18. The bottom of the annular plugging plate 21 in the material pipe 2 is in contact and sealed. When the fluid in the connecting pipe 11 passes through the position of the discharge pipe 2, it will not excessively enter the interior of the filter tank 4. When it is necessary to clean the particulate matter, the sealing flange 3 between the discharge pipe 2 and the filter tank 4 is directly disassembled, so that the filter tank 4 can be separated from the discharge pipe 2. At this time, the valve stem 13 is blocked between the seals 12 in the connecting pipe 11, and there will be no fluid leakage. After the filter tank 4 is disassembled, it can be separated from the annular baffle 41 by rotating the filter plate 42. Finally, the adsorbent inside it can be replaced to achieve a strong adsorption effect of particulate matter when it is used next time.

[0030] The components for regulating the lifting of the valve stem 13 are already known in the prior art and will not be described in detail in this application.

[0031] The circuits, electronic components and control modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to software and methods.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An ultra-high pressure self-sealing regulating valve, comprising a valve body (1), characterized in that: A connecting pipe (11) is arranged below the valve body (1); a valve stem (13) is arranged at the top end of the valve body (1) located at the connecting pipe (11); a valve flap (14) is fixed at the bottom of the valve stem (13); the valve flap (14) is inserted between the sealing members (12) inside the connecting pipe (11); a discharge pipe (2) is arranged at the bottom of the connecting pipe (11) located between the sealing members (12); a filter tank (4) is arranged below the discharge pipe (2); a sealing flange (3) is arranged between the discharge pipe (2) and the filter tank (4); The pipe (2) and the filter tank (4) are detachably connected via a sealing flange (3); an annular baffle (41) is welded to the inner bottom end of the filter tank (4); a filter screen plate (42) is arranged inside the annular baffle (41); a traction rod (15) is fixed to the bottom of the valve flap (14); a conical plate (16) is fixed to the bottom of the traction rod (15); a bottom plate (17) is fixed to the bottom of the conical plate (16); a sealing rubber (18) is arranged on the top of the bottom plate (17); and an annular plugging plate (21) is welded to the inner top end of the discharge pipe (2).

2. The ultra-high pressure self-sealing regulating valve according to claim 1, characterized in that: The outer diameter of the conical plate (16) is smaller than the inner diameter of the annular plugging plate (21), the outer diameter of the bottom plate (17) matches the outer diameter of the annular plugging plate (21), and the top of the sealing rubber (18) contacts the bottom of the annular plugging plate (21).

3. The ultra-high pressure self-sealing regulating valve according to claim 1, characterized in that: The inner diameter of the filter tank (4) is larger than the inner diameter of the discharge pipe (2), and the outer diameter of the bottom plate (17) is smaller than the inner diameter of the filter tank (4).

4. The ultra-high pressure self-sealing regulating valve according to claim 1, characterized in that: The outer wall of the filter plate (42) is threadedly connected to the inner wall of the annular baffle (41).

5. The ultra-high pressure self-sealing regulating valve according to claim 1, characterized in that: The position between the bottom end of the filter tank (4) and the annular baffle (41) and the filter screen plate (42) is filled with particulate matter adsorbent.

6. The ultra-high pressure self-sealing regulating valve according to claim 1, characterized in that: The conical plate (16) is located above the filter plate (42), and the two are in a non-contact state.

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