An adaptive dynamic pressure regulating spool assembly

Abstract

The utility model discloses a kind of self-adapting dynamic pressure regulating valve core assemblies, including the fixed connection of valve seat and valve body, fixed screw rod is passed through on this valve body, the inside of this valve body is equipped with pressure regulating valve stem and adjusting cylinder and self-adapting dynamic pressure regulating spring, the outer surface of the valve body is equipped with outlet hole;Protective assembly, including with the fixed ring of valve body by gluing fixed, with the fixed ring of outer sleeve by screwing connection;Pressure regulating load assembly, including the connecting column of being passed through valve body and being connected with adjusting cylinder, with the fixed connection of mobile plate one end of connecting column, with the welding connection of limiting block of mobile plate, the steady ring of being set in the outside of valve body;Through the design of pressure regulating load assembly, self-adapting dynamic pressure load spring plays the role of increasing load, reduce the load that self-adapting dynamic pressure regulating spring inside valve body receives, avoid its fatigue damage to reduce elastic coefficient.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to an adaptive dynamic pressure regulating valve core assembly. Background Technology

[0002] The valve core assembly is the core functional component of a valve. Different types of valves have different structures for their valve core assemblies. Relief valves use an on / off valve structure, and the valve core assembly includes the valve body, valve core (stem), pressure regulating spring, and locking nut. When the relief valve is in a stationary position and the fluid pressure is less than the spring's set value, the relief outlet is closed under the spring's pressure regulating force. Conversely, when the fluid pressure exceeds the spring's set value, the valve core (stem) moves and the pressure regulating spring is contracted, opening the relief outlet. The overflow fluid passes through the relief outlet, completing the valve core opening and pressure relief. This provides adaptive dynamic pressure regulation, automatically opening to relieve pressure when the pressure is too high.

[0003] The relief valve has only one pressure regulating spring inside. During long-term use, the pressure regulating spring is subjected to alternating loads or exceeds the rated load, which may lead to spring fatigue, a decrease in the elastic coefficient, and a deviation of the set pressure from the initial set value. With only one pressure regulating spring, the load it can withstand is limited, which is a defect. In addition, the pressure regulating spring is located inside the valve body, and the adjustment range is limited. It is also necessary to manually adjust the preload of the pressure regulating spring to change the set pressure. This process is cumbersome and does not facilitate the replacement of the pressure regulating spring with degraded performance, which is also a drawback.

[0004] When existing relief valves use pressure regulating springs for adaptive dynamic pressure regulation, there is a problem that the pressure regulating spring located inside the valve body has limited load capacity and there is no pressure regulation design that increases the load. To address this, this application proposes an adaptive dynamic pressure regulating valve core assembly. Utility Model Content

[0005] The purpose of this invention is to provide an adaptive dynamic pressure regulating valve core assembly to solve the problem of pressure regulating design without added load on the overflow valve mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adaptive dynamic pressure regulating valve core assembly, comprising...

[0007] A valve seat and valve body are fixedly connected. A fixed screw passes through the valve body. The valve body is equipped with a pressure regulating valve stem, an regulating cylinder, and an adaptive dynamic pressure regulating spring. An outlet hole is opened on the outer surface of the valve body.

[0008] The protective assembly includes a fixed ring that is glued to the valve body and an outer sleeve that is threadedly connected to the fixed ring;

[0009] The pressure regulating load assembly includes a connecting column that passes through the valve body and is connected to the regulating cylinder, a movable plate that is fixedly connected to one end of the connecting column, a limiting block that is welded to the movable plate, a stabilizing ring that is sleeved on the outside of the valve body, and an adaptive dynamic pressure load spring that is installed between the stabilizing ring and the limiting block.

[0010] Preferably, the valve body has a sealing cylinder inside, which divides the internal space of the valve body into a fluid chamber B and a pressure regulating chamber C, and the pressure regulating valve stem is located in the fluid chamber B.

[0011] Preferably, a sealing rubber ring is fitted on the outer surface of the sealing cylinder, the outer diameter of the sealing cylinder is the same as the outer diameter of the sealing rubber ring, and a concave annular groove is formed on the outer surface of the sealing cylinder, with the sealing rubber ring engaging with the annular groove.

[0012] Preferably, the surface of the stabilizing ring is welded with symmetrically distributed limiting posts, the surface of the limiting block is provided with a concave first spring groove, and one end of the adaptive dynamic pressure load spring is sleeved on the outside of the limiting post and the other end is embedded in the first spring groove.

[0013] Preferably, the movable plate is arc-shaped, and the valve body surface is provided with a groove for the connecting column to slide.

[0014] Preferably, the fixing ring is a stepped ring, the bottom end of the outer sleeve is connected to the fixing ring by a thread, the outer sleeve is a hollow structure and the top end is sealed, and a pressing cylinder is fixed on the inner surface of the sealed end of the outer sleeve.

[0015] Preferably, a limiting cylinder is fixed on the surface of the adjusting cylinder, a recessed second spring groove is provided on one end of the fixing screw, and one end of the adaptive dynamic pressure adjusting spring is sleeved on the outside of the limiting cylinder and the other end is embedded in the second spring groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, the adaptive dynamic pressure load spring, through the design of the pressure regulating load component, plays the role of increasing the load, reducing the load on the adaptive dynamic pressure regulating spring inside the valve body, and avoiding fatigue damage to prevent it from reducing the elastic coefficient.

[0018] 2. In this utility model, the adaptive dynamic pressure load spring is designed externally, which makes it easy to replace externally when its performance deteriorates. In addition, the adaptive dynamic pressure load spring can also be replaced with different spring forces to achieve the purpose of changing the preload of the pressure regulating spring.

[0019] 3. In this utility model, the outer sleeve is designed to protect the valve body from impacts and corrosion by external dust, oil and other media. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 For the present utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0022] Figure 3 This is a cross-sectional view of the valve body of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the stable ring of this utility model;

[0024] Figure 5 This is a bottom view of the outer sleeve structure of this utility model;

[0025] In the diagram: 2. Outer sleeve; 3. Fixed ring; 4. Stabilizing ring; 5. Adaptive dynamic pressure load spring; 6. Moving plate; 7. Limiting block; 8. Connecting column; 9. Sealing cylinder; 11. Valve seat; 12. Valve body; 13. Fixed screw; 14. Outlet hole; 15. Pressure regulating valve stem; 16. Adjusting cylinder; 17. Adaptive dynamic pressure regulating spring; 21. Compacting cylinder; 41. Limiting column; 91. Sealing rubber ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 5This utility model provides a technical solution: an adaptive dynamic pressure regulating valve core assembly, including a valve seat 11 and a valve body 12 fixedly connected. A fixing screw 13 passes through the valve body 12. The valve body 12 is provided with a pressure regulating valve rod 15, an adjusting cylinder 16, and an adaptive dynamic pressure regulating spring 17. An outlet hole 14 is opened on the outer surface of the valve body 12. Fluid flows through the valve seat 11 and enters the valve body 12. When the fluid pressure exceeds the spring setting value, the pressure regulating valve rod 15 moves and the adaptive dynamic pressure regulating spring 17 contracts, and the fluid passes through the outlet hole 14 to achieve the purpose of pressure relief. The valve core assembly of the overflow valve of this application has the function of adaptive dynamic pressure regulation, which can adjust the pressure relief according to the pressure magnitude. The protective component includes a fixing ring 3 fixed to the valve body 12 by adhesive, and an outer sleeve 2 connected to the fixing ring 3 by threaded engagement. The outer sleeve 2 is sleeved on the outside of the valve body 12 to protect the valve body 12. The outer sleeve 2 is made of stainless steel to prevent the valve body 12 from being bumped and corroded by external dust, oil and other media. The pressure regulating load assembly includes a connecting column 8 that passes through the valve body 12 and is connected to the regulating cylinder 16, a movable plate 6 fixedly connected to one end of the connecting column 8, a limiting block 7 welded to the movable plate 6, a stabilizing ring 4 sleeved on the outside of the valve body 12, and an adaptive dynamic pressure load spring 5 installed between the stabilizing ring 4 and the limiting block 7. The movable plate 6, the limiting block 7, the connecting column 8, and the regulating cylinder 16 form an integral structure. When the pressure regulating valve stem 15 moves, the above integral structure moves accordingly, and the adaptive dynamic pressure load spring 5 is compressed. The symmetrically distributed adaptive dynamic pressure load springs 5 ​​on the outside of the valve body 12 increase the load and reduce the load on the adaptive dynamic pressure regulating spring 17 inside the valve body 12, preventing fatigue damage and thus reducing the elastic coefficient. In addition, the adaptive dynamic pressure load spring 5 is externally designed, making it easy to replace when its performance deteriorates. Finally, the number of adaptive dynamic pressure load springs 5 ​​can be increased according to the actual situation, thereby changing the preload of the pressure regulating spring.

[0028] In this embodiment, a sealing cylinder 9 is provided inside the valve body 12. The sealing cylinder 9 divides the internal space of the valve body 12 into a fluid chamber B and a pressure regulating chamber C. The pressure regulating valve stem 15 is located in the fluid chamber B. A sealing rubber ring 91 is fitted on the outer surface of the sealing cylinder 9. The outer diameter of the sealing cylinder 9 is the same as the outer diameter of the sealing rubber ring 91. A concave annular groove is formed on the outer surface of the sealing cylinder 9. The sealing rubber ring 91 cooperates with the annular groove. The sealing cylinder 9 and the sealing rubber ring 91 play a sealing role to prevent overflowing fluid from entering the pressure regulating chamber C.

[0029] In this embodiment, symmetrically distributed limiting posts 41 are welded to the surface of the stabilizing ring 4, and a concave first spring groove is opened on the surface of the limiting block 7. One end of the adaptive dynamic pressure load spring 5 is sleeved on the outside of the limiting post 41 and the other end is embedded in the first spring groove. The limiting post 41 limits the adaptive dynamic pressure load spring 5 to prevent the adaptive dynamic pressure load spring 5 from tilting.

[0030] In this embodiment, the movable plate 6 is arc-shaped, and the surface of the valve body 12 is provided with a sliding groove for the connecting column 8 to slide. The connecting column 8 is slidably connected to the valve body 12, and the connecting column 8 can move in the same direction as the adjusting cylinder 16 inside the valve body 12.

[0031] In this embodiment, the fixed ring 3 is a stepped ring shape, and the bottom end of the outer sleeve 2 is connected to the fixed ring 3 by threaded connection. The outer sleeve 2 has a hollow structure and the top end is sealed. A pressing cylinder 21 is fixed on the inner surface of the sealed end of the outer sleeve 2. The pressing cylinder 21 presses the fixing screw 13 to prevent the fixing screw 13 from loosening. The outer sleeve 2 is sleeved on the outside of the valve body 12 to protect the valve body 12 and prevent the valve body 12 from being bumped and corroded by external dust, oil and other media.

[0032] In this embodiment, a limiting cylinder is fixed on the surface of the adjusting cylinder 16, and a recessed second spring groove is provided on one end of the fixing screw 13. One end of the adaptive dynamic pressure adjusting spring 17 is sleeved on the outside of the limiting cylinder and the other end is embedded in the second spring groove. A nut is provided on the outside of the fixing screw 13. The adaptive dynamic pressure adjusting spring 17 with reduced elasticity can be replaced by manually disassembling the fixing screw 13.

[0033] Working principle and usage process of this utility model:

[0034] When the valve core assembly of this application is used as a relief valve, when fluid overflow occurs, the fluid flows through the valve seat 11 and enters the valve body 12. When the fluid pressure exceeds the spring setting value, the pressure regulating valve rod 15 moves and the adaptive dynamic pressure regulating spring 17 contracts, and the fluid passes through the outlet hole 14 to complete the purpose of pressure relief. The valve core assembly of the relief valve of this application has the function of adaptive dynamic pressure regulation, which can adjust the pressure relief according to the pressure magnitude.

[0035] The movable plate 6, the limiting block 7, the connecting column 8, and the adjusting cylinder 16 form an integral structure. When the pressure regulating valve rod 15 moves, the above integral structure moves accordingly, and the adaptive dynamic pressure load spring 5 is compressed.

[0036] The adaptive dynamic pressure load springs 5, which are symmetrically distributed on the outside of the valve body 12, increase the load and reduce the load on the adaptive dynamic pressure regulating spring 17 inside the valve body 12, so as to avoid fatigue damage and reduce the elastic coefficient.

[0037] In addition, the adaptive dynamic pressure load spring 5 is an external design, which makes it easy to replace when its performance deteriorates. Finally, the number of adaptive dynamic pressure load springs 5 ​​can be increased according to the actual situation, thereby changing the preload of the pressure regulating spring.

[0038] The outer sleeve 2 is fitted on the outside of the valve body 12 to protect the valve body 12 from impacts and corrosion from external dust, oil and other media.

[0039] In summary: The overflow valve core assembly of this application has a pressure regulating design to increase the load. The adaptive dynamic pressure load spring 5 is an external design, which increases the load and reduces the load on the adaptive dynamic pressure regulating spring 17 inside the valve body 12, avoiding fatigue damage and thus reducing the elastic coefficient, and making it easier to replace the adaptive dynamic pressure load spring 5 with degraded performance.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adaptive dynamic pressure regulating valve core assembly, characterized in that: include A valve seat (11) and a valve body (12) are fixedly connected. A fixed screw (13) passes through the valve body (12). The valve body (12) is provided with a pressure regulating valve stem (15), an regulating cylinder (16), and an adaptive dynamic pressure regulating spring (17). An outlet hole (14) is opened on the outer surface of the valve body (12). The protective assembly includes a fixed ring (3) that is glued to the valve body (12) and an outer sleeve (2) that is threadedly connected to the fixed ring (3). The pressure regulating load assembly includes a connecting column (8) that passes through the valve body (12) and is connected to the regulating cylinder (16), a movable plate (6) that is fixedly connected to one end of the connecting column (8), a limiting block (7) that is welded to the movable plate (6), a stabilizing ring (4) that is sleeved on the outside of the valve body (12), and an adaptive dynamic pressure load spring (5) installed between the stabilizing ring (4) and the limiting block (7).

2. The adaptive dynamic pressure regulating valve core assembly according to claim 1, characterized in that: The valve body (12) is provided with a sealing cylinder (9) inside, which divides the internal space of the valve body (12) into a fluid chamber B and a pressure regulating chamber C. The pressure regulating valve stem (15) is located in the fluid chamber B.

3. The adaptive dynamic pressure regulating valve core assembly according to claim 2, characterized in that: The outer surface of the sealing cylinder (9) is fitted with a sealing rubber ring (91). The outer diameter of the sealing cylinder (9) is the same as the outer diameter of the sealing rubber ring (91). The outer surface of the sealing cylinder (9) is provided with a concave annular groove, and the sealing rubber ring (91) is engaged with the annular groove.

4. The adaptive dynamic pressure regulating valve core assembly according to claim 1, characterized in that: The surface of the stable ring (4) is welded with symmetrically distributed limiting posts (41), and the surface of the limiting block (7) is provided with a concave first spring groove. One end of the adaptive dynamic pressure load spring (5) is sleeved on the outside of the limiting post (41) and the other end is embedded in the first spring groove.

5. The adaptive dynamic pressure regulating valve core assembly according to claim 1, characterized in that: The movable plate (6) is arc-shaped, and the valve body (12) has a groove on its surface for the connecting column (8) to slide.

6. The adaptive dynamic pressure regulating valve core assembly according to claim 1, characterized in that: The fixed ring (3) is a stepped ring. The bottom end of the outer sleeve (2) is connected to the fixed ring (3) by a threaded connection. The outer sleeve (2) is a hollow structure with a sealed top end. A pressing cylinder (21) is fixed on the inner surface of the sealed end of the outer sleeve (2).

7. The adaptive dynamic pressure regulating valve core assembly according to claim 1, characterized in that: The surface of the adjusting cylinder (16) is fixed with a limiting cylinder, and a recessed second spring groove is provided on one end of the fixing screw (13). One end of the adaptive dynamic pressure adjusting spring (17) is sleeved on the outside of the limiting cylinder and the other end is embedded in the second spring groove.

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