A pressure stabilizing valve
By introducing a guide cavity and a conical section into the pressure regulating valve, combined with a flow system and lubrication components, technical problems that cannot be solved in the prior art are solved. This achieves pressure stability of the outlet medium under changes in flow rate and temperature fluctuations, solves the problem of inaccurate control in the prior art, and improves the stability and service life of the valve.
Patent Information
- Application Number
- CN202422805521.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing pressure regulating valves cannot accurately control the outlet medium pressure, cannot maintain stability under changes in flow rate and temperature fluctuations, and buffers and safety relief valves only provide safety protection but cannot accurately control the pressure.
A pressure regulating valve was designed. By setting a valve cover between the valve seat and the second flange, and combining the guide cavity and the conical part, the valve core opening is adjusted by the main spring, which increases the stability and accuracy of the valve core. Friction is reduced by the flow seat and the lubrication assembly, thus achieving stable control of the medium pressure.
It achieves stable control of outlet medium pressure under changes in flow rate and temperature fluctuations, extends the service life of the valve core, and improves the smoothness of medium flow and the ease of valve maintenance.
Smart Images
Figure CN223595015U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a valve, in particular to a pressure stabilizing valve. BACKGROUND
[0002] The pressure stabilizing valve is a kind of valve for adjusting fluid pressure, commonly applied in various hydraulic systems to keep pressure stable. The opening degree of the opening and closing element in the control valve body is used to adjust the flow of medium, and the pressure of medium is reduced, and the opening degree of the opening and closing element is adjusted by the action of the pressure behind the valve, so that the pressure behind the valve is kept in a certain range, and the outlet pressure is kept in the set range under the condition that the inlet pressure is continuously changed. When the pressure stabilizing valve is regulated, there is usually a spring inside, and the tension of the spring can usually be adjusted to control the working pressure of the pressure stabilizing valve. When the pressure exceeds the set value, the spring will contract, and the pressure will be released through the valve until the pressure returns to the set range.
[0003] At present, the buffer is often used at the outlet of reciprocating pump, which has good inhibiting ability to the pulsation generated by reciprocating motion of the reciprocating pump. However, the buffer is installed on the pump outlet pipe branch, and cannot stabilize the outlet pressure.
[0004] The safety pressure relief valve is often used at the outlet of reciprocating pump. When the outlet pressure of pipeline is within the safety range, the medium flows normally. When the outlet pressure of pipeline exceeds the safety range, the pressure relief valve will automatically open to release the excess pressure, preventing the equipment from being damaged due to excessive pressure. However, the valve body only plays a safety protection role for overpressure, and cannot accurately control the stability of outlet pressure. Based on the above reasons, it is necessary to design a pressure stabilizing valve that can stably control the outlet medium pressure. TECHNICAL SOLUTION
[0005] In view of the above problems existing in the prior art, the utility model aims at providing a pressure stabilizing valve, which can stably control the outlet medium pressure.
[0006] To achieve the above purpose, the utility model technical scheme is as follows:
[0007] A pressure stabilizing valve, comprising a valve seat, a second flange arranged at both ends of the valve seat and a first flange arranged at the end of the second flange, a valve core is arranged at the inlet of the valve seat, a main spring is arranged outside the valve core, the valve core is adjusted by the pressure of the main spring, a valve cover is arranged between the outlet end of the valve seat and the second flange, a guide cavity is arranged inside the valve cover, a flow-through seat connected with the valve core and the main spring is arranged on one side of the guide cavity, a tapered surface part is arranged at one end of the valve core close to the inlet, a guide part is arranged at the end of the tapered surface part, which is used to reduce the wear of the valve core and increase the stability of the outlet pipeline.
[0008] As a preferred, a bolt is arranged through between the two second flanges, and nuts are arranged at both ends of the bolt.
[0009] Preferably, the second flange, the valve seat and the valve cover are provided with a concave-convex end, and a sealing gasket is clamped in the concave groove of the concave-convex end, and an inner side of the concave-convex end is sleeved with a gasket ring.
[0010] Preferably, a plurality of through holes are arranged on the flow seat in a ring shape, and the through holes penetrate the flow seat, and a tapered groove is arranged on one end of the flow seat close to the valve core.
[0011] Preferably, the valve core is in a rod shape at one end close to the flow seat, and the valve core moves linearly through the flow seat, and the main spring is located between the tapered surface part and the flow seat.
[0012] Preferably, a large-size bottom surface of the tapered surface part is connected with the main spring, a small-size bottom surface of the tapered surface part is connected with the guide part, a groove is arranged on the valve seat to cooperate with the movement of the tapered surface part and the guide part, and the tapered surface part is attached to the valve seat.
[0013] Preferably, the guide part is composed of three feet, and the three feet are arranged at 120°, and a root cleaning part is arranged on each foot.
[0014] Preferably, a lubricating assembly is arranged between the valve core and the flow seat, the lubricating assembly comprises a fixed seat fixedly connected with the flow seat, a bearing seat is sleeved in the fixed seat, the valve core penetrates the bearing seat, and a plurality of rolling balls are arranged in the bearing seat.
[0015] Compared with the prior art, the pressure stabilizing valve can maintain the medium in the connecting equipment at a stable pressure and stably control the outlet pressure. Specifically, the guide cavity of the valve core can be arranged by using the valve cover between the valve seat and the second flange, the movement range of the valve core is limited, the main spring in the pressure stabilizing valve is conveniently controlled to stretch and shrink within a certain range by arranging the guide part and the tapered surface part on the valve core, the valve core can accurately fall back to the initial position when the valve core takes off, the stability of the upward and downward movement of the valve core is increased, the abnormal wear of the valve core during work is reduced, and the service life is prolonged.
[0016] Further, by arranging the concave-convex end on the valve cover, the valve seat and the end of the second flange in the pressure stabilizing valve, the pressure stabilizing valve can be arranged as a detachable structure at the middle part, the internal maintenance is facilitated, the stability of the medium control of the pressure stabilizing valve is ensured, the friction between the valve core and the flow seat is reduced by using the flow seat and the lubricating assembly, the valve core is prevented from being jammed, the service life of the pressure stabilizing valve is increased, the stability of the valve core is further improved, and the control of the medium connected to the pressure stabilizing valve is very beneficial.
[0017] It should be understood that the general description and the details herein are only exemplary and illustrative, rather than for limiting the disclosure.
[0018] This application file provides various implementations or exemplary summaries of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is the whole structure schematic view of the pressure stabilizing valve of the utility model;
[0020] Figure 2 It is the structure sectional view of the valve seat, valve cover and second flange in the pressure stabilivating valve of the utility model;
[0021] Figure 3 It is the local structure sectional view of the valve seat and valve core in the pressure stabilivating valve of the utility model;
[0022] Figure 4 It is the structure sectional view of the valve cover and flow seat in the pressure stabilivating valve of the utility model;
[0023] Figure 5 It is the local structure enlarged view of the valve core and lubricating assembly in the pressure stabilivating valve of the utility model;
[0024] Figure 6 It is the local structure enlarged view of the second flange and valve cover in the pressure stabilivating valve of the utility model.
[0025] Main reference signs:
[0026] 11, first flange; 2, valve seat; 21, second flange; 22, valve core; 221, conical surface part; 222, guide part; 223, root cleaning part; 23, main spring; 3, valve cover; 31, guide cavity; 32, flow seat; 321, through hole; 4, lubricating assembly; 41, sealing gasket; 42, bearing seat; 43, ball; 5, concave-convex end; 51, sealing gasket; 52, fitting ring; 6, bolt; 61, nut. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure more clear, the embodiments of the present disclosure are described in more detail below with reference to the drawings. Note: the described embodiments are part of the embodiments of the present disclosure, not all embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present disclosure.
[0028] As shown in the accompanying Figures 1-3The embodiment of the utility model provides a pressure stabilizing valve, the pressure stabilizing valve is installed on the pump outlet pipeline, is a pressure control device, can stabilize output pressure. Not affected by factors such as flow change, temperature fluctuation, good stability, applicable to the occasion needing accurate pressure control. Among them, the existing pressure stabilizing valve includes valve seat 2, the second flange 21 set up at the both ends of valve seat 2 and the first flange 11 set up at the end of second flange 21, the inlet of valve seat 2 is provided with valve core 22, and the main spring 23 is arranged between valve core 22 and valve seat 2, two second flanges 21 are respectively the inlet and outlet flanges of pressure stabilizing valve, two second flanges 21 are respectively the inlet flange and outlet flange of pressure stabilizing valve, wherein the inlet flange is installed on the pump, and the opening of valve seat 2 is controlled by using main spring 23 through valve core 22, and the output pressure of the pump is controlled. The valve cover 3 is arranged between the outlet end of valve seat 2 and second flange 21, the inside of valve cover 3 is provided with the guide cavity 31 matched with valve core 22, and the flow-through seat 32 connected with valve core 22 and main spring 23 is arranged on one side of guide cavity 31, one end of valve core 22 close to the inlet is provided with a tapered surface part 221, the end of tapered surface part 221 is provided with a guide part 222, the tapered surface part 221 and the guide part 222 are used in cooperation, when the valve core 22 is lifted by main spring 23, the valve core 22 is lifted stably and falls back, the wear of valve core 22 is reduced, the stability of outlet pipeline is increased, and the pressure stabilizing valve can control medium pressure more accurately. Again, the tapered surface of the valve core 22 of the pressure stabilizing valve can enlarge the stress area of the valve core 22, so that the wear of the valve core 22 and the valve seat 2 is slowed down, and the service life is long.
[0029] As Figure 1 The pressure stabilizing valve is used, the bolt 6 can be arranged in penetration between the two second flanges 21, the valve seat 2, the valve cover 3 and the second flange 21 are connected together, the valve seat 2, the valve cover 3 and the second flange 21 are tightened and installed by the screwing of the nut 61 on both ends of the bolt 6 to the second flange 21, the detachability of the valve cover 3 is increased, and the assembly of the pressure stabilizing valve is facilitated. When the pressure stabilizing valve is used, the middle part of the pressure stabilizing valve is opened by using the valve cover 3, the inside of the valve body is maintained, the structure of the pressure stabilizing valve is simple, maintenance is easy, and faults are not prone to occur.
[0030] In order to better facilitate the long-time use of the pressure stabilizing valve, as Figure 2 And 6As shown, the second flange 21 at the inlet and outlet of the pressure stabilizing valve, the valve seat 2 and the adjacent end of the valve cover 3 are all provided with concave-convex ends 5. Through the insertion engagement of the adjacent structures, stable connection between the structures can be achieved. The sealing gasket 51 clamped in the recess of the concave-convex end 5 can be used to seal the connection. The sealing gasket 51 and the fitting ring 52 can be made of polytetrafluoroethylene material, which has good properties such as corrosion resistance, aging resistance and non-conductivity. It has good mechanical strength between -100℃ and 100℃, which provides favorable conditions for the use of the pressure stabilizing valve.
[0031] As shown in Figure 2 and 4 , a plurality of annularly distributed through holes 321 are formed in the flow seat 32, and the through holes 321 are provided through the flow seat 32 to output the medium in the guide cavity 31 for adjustment of the input end connection structure. In addition, a tapered groove is formed in one end of the flow seat 32 close to the valve core 22. The tapered groove can expand the volume of the guide cavity 31 to guide the medium and prevent the medium from accumulating, thereby increasing the smoothness of the medium pressure stabilization.
[0032] As shown in Figure 2 and 3 , one end of the valve core 22 close to the flow seat 32 is in a rod-shaped structure, and the valve core 22 moves linearly through the flow seat 32. The main spring 23 is located between the conical surface part 221 and the flow seat 32. When the valve core 22 is used, the principle of differential pressure can be obtained. When the pressure at the inlet end of the valve seat 2 is greater than the pressure of the spring on the valve core 22 and the pressure in the guide cavity 31, the main spring 23 is compressed by the pressure at the inlet end to produce deformation, so that the guide part 222 and the conical surface part 221 are pressed into the guide cavity 31 to open the inlet, and the medium flows into the guide cavity 31 to realize the pressure stabilization of the medium at the inlet end. With the real-time pressure stabilization of the main spring 23 on the valve core 22, the smooth pressure regulation of the medium is realized.
[0033] In order to better limit the valve core 22, as shown in Figure 3 , the larger size bottom surface of the conical surface part 221 is connected with the main spring 23, and the smaller size bottom surface of the conical surface part 221 is connected with the guide part 222. In addition, a groove is formed in the valve seat 2 to cooperate with the movement of the conical surface part 221 and the guide part 222. When the pressure in the connected equipment is stable, the conical surface part 221 is fitted with the groove surface of the valve seat 2. The use of the guide part 222 can reduce the contact area of the valve core 22 and the valve seat 2, and reduce the pressure regulation friction and wear of the pressure stabilizing valve. The cooperation of the conical surface part 221 and the guide part 222 increases the up-down pressure stabilization of the valve core 22 and improves the service life of the valve core 22.
[0034] As shown in Figure 3As shown, the guide part 222 is composed of three feet, and the three feet are evenly distributed at 120°, and the root part of each foot is provided with a root cleaning part 223.
[0035] In order to better maintain the stability of the pressure regulating of the valve core 22, as shown in Figure 4 and 5 As shown, a lubricating assembly 4 can be arranged between the flow-through seat 32 and the valve core 22, the lubricating assembly 4 comprises a fixed seat 41 fixedly connected with the flow-through seat 32, the fixed seat 41 is sleeved with a bearing seat 42, the bearing seat 42 is penetrated by the valve core 22, and a plurality of balls 43 are arranged in the bearing seat 42, so that the flexible rotation characteristics of the balls 43 are utilized to lubricate the up-down movement of the valve core 22, avoid the jamming of the valve core 22, improve the smoothness of the pressure stabilization of the valve core 22, and facilitate the stable control of the medium by the stable pressure valve.
[0036] Of course, the above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the scope of protection of the present application.
Claims
1. A pressure regulating valve, comprising a valve seat (2), second flanges (21) disposed at both ends of the valve seat (2), and a first flange (11) disposed at the end of the second flanges (21), wherein a valve core (22) is disposed at the inlet of the valve seat (2), and a main spring (23) is disposed outside the valve core (22), and the valve core (22) is pressure regulated by the main spring (23), characterized in that: A valve cover (3) is provided between the outlet end of the valve seat (2) and the second flange (21). A guide cavity (31) is provided inside the valve cover (3). A flow seat (32) connected to the valve core (22) and the main spring (23) is provided on one side of the guide cavity (31). A conical part (221) is provided at the end of the valve core (22) near the inlet. A guide part (222) is provided at the end of the conical part (221) to reduce the wear of the valve core (22) and increase the stability of the outlet pipeline.
2. The pressure regulating valve as described in claim 1, characterized in that, A bolt (6) is provided through the two second flanges (21), and nuts (61) are fitted at both ends of the bolt (6).
3. The pressure regulating valve as described in claim 1, characterized in that, The adjacent ends of the second flange (21), valve seat (2) and valve cover (3) are provided with concave and convex ends (5), and a sealing gasket (51) is sandwiched in the groove of the concave and convex ends (5), and a fitting ring (52) is sleeved on the inner side of the concave and convex ends (5).
4. The pressure regulating valve as described in claim 1, characterized in that, The flow seat (32) has several annularly distributed through holes (321), and the through holes (321) are connected to the flow seat (32). The flow seat (32) has a tapered groove at one end near the valve core (22).
5. The pressure regulating valve as described in claim 4, characterized in that, The valve core (22) has a rod-shaped structure at one end near the flow seat (32), and the valve core (22) moves linearly through the flow seat (32). The main spring (23) is located between the conical part (221) and the flow seat (32).
6. The pressure regulating valve as described in claim 1, characterized in that, The large bottom surface of the conical part (221) is connected to the main spring (23), and the small bottom surface of the conical part (221) is connected to the guide part (222). The valve seat (2) has a groove that cooperates with the movement of the conical part (221) and the guide part (222), and the conical part (221) fits against the valve seat (2).
7. The pressure regulating valve as described in claim 6, characterized in that, The guide part (222) consists of three feet, which are evenly distributed at 120°, and each foot has a clear root part (223).
8. The pressure regulating valve as described in claim 1, characterized in that, A lubrication assembly (4) is provided between the valve core (22) and the flow seat (32). The lubrication assembly (4) includes a fixed seat (41) fixedly connected to the flow seat (32). A bearing seat (42) is sleeved in the fixed seat (41), and the valve core (22) and the bearing seat (42) pass through each other. A plurality of balls (43) are provided in the bearing seat (42).