Adjustable pressure reducing valve with long service life

Abstract

The invention relates to the technical field of pressure reducing valves, in particular to a long-service-life adjustable pressure reducing valve which comprises a valve body, a pilot valve shell and a valve element assembly, the top of the valve body is connected with the pilot valve shell through a bolt, a valve seat is arranged in the valve body, and the valve element assembly is slidably connected to the position, located at the bottom of the valve seat, in the valve body. A guide assembly is slidably connected to the top in the valve body, and limiting assemblies are arranged on the two sides of the guide valve shell correspondingly. The valve element assembly comprises a conical valve element, flow guide strips are connected to the outer surface of the conical valve element at equal intervals in a welded mode, a first buffer pad is connected to the position, located on the outer sides of the flow guide strips, of the periphery of the conical valve element in a glued mode, and a second buffer pad is connected to the bottom of the conical valve element in a glued mode. By additionally arranging the valve element auxiliary protection buffering mechanism and utilizing elastic supporting and flow guiding buffering modes, impact generated by fluid and collision generated by the valve seat are reduced, the using stability is improved, meanwhile, the loss speed is reduced, and therefore the using effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure reducing valves, in particular to an adjustable pressure reducing valve with a long service life. Background Art

[0002] A pressure reducing valve is a valve that reduces the inlet pressure to a required outlet pressure by adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. When the inlet pressure changes, the pressure reducing valve adjusts the opening of the opening and closing parts to keep the outlet pressure near the set value. It is mainly used in the industrial, construction, energy and medical fields.

[0003] At present, when using the pressure reducing valve, there is a lack of valve core auxiliary protection buffer mechanism. Usually, during the use of the pressure reducing valve, the valve core needs to slide repeatedly due to the change of fluid pressure. During the sliding displacement, the valve core is easily damaged due to the collision with the valve seat due to the pressure, which affects the use effect and shortens the service life. Therefore, an adjustable pressure reducing valve with a long service life is proposed to increase the valve core auxiliary protection buffer mechanism, use elastic support and diversion buffering to reduce the impact of the fluid and the collision of the valve seat, improve the stability of use, and slow down the loss rate, thereby improving the use effect. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides an adjustable pressure reducing valve with a long service life, so as to reduce the impact of the fluid and the collision of the valve seat, improve the stability of use, and thus enhance the use effect.

[0005] The technical solution adopted by the present invention to solve the technical problem is an adjustable pressure reducing valve with a long service life, comprising a valve body, a pilot valve housing and a valve core assembly, wherein the top of the valve body is connected to the pilot valve housing by bolts, a valve seat is arranged in the valve body, a valve core assembly is slidably connected to the bottom of the valve seat in the valve body, a guide assembly is slidably connected to the top of the valve body, and limit assemblies are arranged on both sides of the pilot valve housing;

[0006] The valve core assembly includes a conical valve core, the outer surface of which is equidistantly connected to guide strips by welding, the periphery of the conical valve core is located outside the guide strip and is connected to a first buffer pad by gluing, and the bottom of the conical valve core is connected to a second buffer pad by gluing.

[0007] By adopting the above technical solution, an auxiliary buffer protection mechanism can be added, and the stability of the valve core operation can be improved by utilizing flow diversion buffering and elastic support, thereby reducing impact and collision losses and extending the service life.

[0008] Specifically, the limit assembly includes a fixing sleeve, and the pilot valve housing is connected to the fixing sleeve by bolts, one side of the fixing sleeve is sleeved and connected to the push rod, and the push rod passes through the pilot valve housing through a reserved hole, one end of the push rod is connected to a clamping block by bolts, and the surface inside the clamping block is connected to an anti-slip pad by gluing.

[0009] By adopting the above technical solution, an auxiliary clamping and limiting mechanism can be added, and the stability of the pressure reducing valve can be improved by clamping, making it less susceptible to rotation and displacement caused by vibration, thereby improving the stability of the adjustment mechanism and improving the accuracy of pressure reduction.

[0010] Specifically, reinforcing ribs are arranged in the guide strip, a groove corresponding to the guide strip is provided on the inner surface of the valve seat, a third buffer pad is connected to the top of the conical valve core by gluing, and a through hole is provided in the conical valve core.

[0011] By adopting the above technical solution, it is convenient to cooperate with the guide strip to perform clamping and limiting, and it is convenient to fix the conical valve core and the valve stem.

[0012] Specifically, a piston is arranged at the other end of the push rod in the fixed sleeve, a return spring is arranged at the outer sleeve of the push rod in the fixed sleeve, and an air inlet hole is arranged at the outer side of the fixed sleeve.

[0013] By adopting the above technical solution, it is convenient to utilize the elastic driving force to drive the push rod to move horizontally, and it is convenient to connect the air pump equipment to inflate and pressurize to push the push rod to slide and clamp.

[0014] Specifically, the guide assembly includes a valve stem, and the valve body is sleeved and connected to the valve stem. The periphery of the valve stem is connected to a gasket by bolts. The top of the valve body is located at the bottom of the gasket and a diaphragm is installed through a slot. The periphery of the valve stem is located at the bottom of the diaphragm and a stopper is connected to the bottom of the diaphragm by bolts. An axle seat corresponding to the valve stem is provided at the bottom of the valve core assembly in the valve body.

[0015] By adopting the above technical solution, the valve core assembly can be driven to move vertically, its use height position can be adjusted, and the fluid pressure can be reduced.

[0016] Specifically, a support plate is provided in the pilot valve housing, a pressure regulating plate is provided in the pilot valve housing at the top of the support plate, a spring is installed between the support plate and the pressure regulating plate through a spring seat, an adjusting rod is threadedly connected to the top of the pilot valve housing, and the top of the adjusting rod is connected to a handwheel through a bolt.

[0017] By adopting the above technical solution, it is convenient to utilize elastic force to drive the valve core assembly to perform a reset action, and it is convenient to utilize the threaded connection to move vertically to adjust the use effect of the pressure reducing valve.

[0018] Specifically, an inlet is opened on one side of the valve body, and an outlet is opened on the other side of the valve body. Pressure gauges are arranged on the tops of the inlet and the outlet, and the detection ends of the pressure gauges are located inside the inlet and the outlet.

[0019] By adopting the above technical solution, the fluid can be easily sent out after being decompressed by the valve body, and the inlet and outlet pressures can be easily detected by the pressure gauge.

[0020] Beneficial effects of the present invention:

[0021] (1) The adjustable pressure reducing valve with a long service life described in the present invention can increase the valve core auxiliary protection buffer mechanism by means of the valve body, conical valve core, guide strip, first buffer pad and second buffer pad, and utilize the guide buffer and elastic support to improve the use quality of the valve core, reduce the loss rate caused by fluid impact and valve seat collision, improve the use effect, and at the same time help to extend the service life. It has a simple structure and is more stable and reliable to use.

[0022] (2) The adjustable pressure reducing valve with a long service life described in the present invention can add an auxiliary self-locking mechanism by means of the provided guide valve housing, fixing sleeve, push rod, acceleration, anti-skid pad, piston and air inlet hole. The air pressure thrust generated by the external inflation device is used to clamp and limit the adjusted regulating rod, which can not only improve the stability of use, but also prevent the vibration caused by the fluid impact on the pressure reducing valve from affecting the position of the regulating rod. The structure is simple, the cost is low, and the use is more reasonable and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic cross-sectional structural diagram of the valve core assembly of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the structure of the limit assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the valve body of the present invention;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the pilot valve housing of the present invention;

[0029] In the figure: 1. valve body; 101. inlet; 102. outlet; 2. pilot valve housing; 201. support plate; 202. pressure regulating plate; 203. spring; 204. adjusting rod; 205. hand wheel; 3. valve seat; 301. groove; 4. valve core assembly; 401. conical valve core; 402. guide strip; 403. first buffer pad; 404. second buffer pad; 405. reinforcing rib; 406. third buffer pad; 407. through hole; 5. guide assembly; 501. valve stem; 502. pad; 503. diaphragm; 6. limit assembly; 601. fixing sleeve; 602. push rod; 603. clamping block; 604. anti-skid pad; 605. piston; 606. reset spring; 607. air inlet; 7. stopper; 8. shaft seat; 9. pressure gauge. DETAILED DESCRIPTION

[0030] 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 explained below in conjunction with specific implementation methods.

[0031] In order to reduce the impact of the fluid and the collision of the valve seat, improve the stability of use, and thus improve the use effect, such as Figure 1-3 As shown, the adjustable pressure reducing valve with a long service life of the present invention comprises a valve body 1, a pilot valve housing 2 and a valve core assembly 4, the top of the valve body 1 is connected to the pilot valve housing 2 by bolts, a valve seat 3 is arranged in the valve body 1, the bottom of the valve seat 3 in the valve body 1 is slidably connected to the valve core assembly 4, the top of the valve body 1 is slidably connected to the guide assembly 5, and both sides of the pilot valve housing 2 are provided with limit assemblies 6;

[0032] The valve core assembly 4 includes a conical valve core 401, the outer surface of which is equidistantly connected to a guide strip 402 by welding, the periphery of the conical valve core 401 is located outside the guide strip 402 and is connected to a first buffer pad 403 by gluing, and the bottom of the conical valve core 401 is connected to a second buffer pad 404 by gluing.

[0033] When in use, an auxiliary buffer protection mechanism can be added through the conical valve core 401, the guide strip 402, the first buffer pad 403 and the second buffer pad 404. The flow guide buffer and elastic support are used to improve the stability of the valve core, reduce the impact and collision loss, and help extend the service life.

[0034] In order to improve the stability of regulation, for example, Figure 1 , Figure 3As shown, the present invention also includes that the limit assembly 6 includes a fixing sleeve 601, and the pilot valve housing 2 is connected to the fixing sleeve 601 by bolts, one side of the fixing sleeve 601 is sleeved and connected to the push rod 602, and the push rod 602 passes through the pilot valve housing 2 through a reserved hole, one end of the push rod 602 is connected to a clamping block 603 by bolts, and the surface inside the clamping block 603 is connected to an anti-slip pad 604 by gluing.

[0035] When in use, an auxiliary clamping and limiting mechanism can be added by fixing the sleeve 601, the push rod 602, the clamping block 603 and the anti-slip pad 604. The stability of the pressure reducing valve can be improved by clamping, making it less susceptible to rotation and displacement caused by vibration, thereby improving the stability of the adjustment mechanism and improving the accuracy of pressure reduction.

[0036] For example, Figure 2 , 4 As shown, the present invention also includes that a reinforcing rib 405 is provided in the guide strip 402, a groove 301 corresponding to the guide strip 402 is provided on the inner surface of the valve seat 3, a third buffer pad 406 is connected to the top of the conical valve core 401 by gluing, and a through hole 407 is provided in the conical valve core 401.

[0037] When in use, the reinforcing rib 405 facilitates improving the use strength of the guide strip 402, the groove 301 facilitates the clamping and limiting of the guide strip 402, and the third buffer pad 406 and the through hole 407 facilitate the fixed connection between the conical valve core 401 and the valve stem 501.

[0038] For example, Figure 3 As shown, the present invention also includes that a piston 605 is provided at the other end of the push rod 602 in the fixing sleeve 601 , a return spring 606 is provided at the outer sleeve of the push rod 602 in the fixing sleeve 601 , and an air inlet 607 is provided on the outer side of the fixing sleeve 601 .

[0039] When in use, the piston 605 and the return spring 606 can be used to utilize the elastic driving force to drive the push rod 602 to move horizontally. Through the air inlet hole 607, it is convenient to connect the air pump equipment to inflate and pressurize the push rod 602 to slide and clamp.

[0040] For example, Figure 1 , Figure 4 As shown, the present invention also includes that the guide assembly 5 includes a valve stem 501, and the valve body 1 is sleeved and connected to the valve stem 501, the periphery of the valve stem 501 is connected to a gasket 502 by bolts, the top of the valve body 1 is located at the bottom of the gasket 502 and a diaphragm 503 is installed through a slot, the periphery of the valve stem 501 is located at the bottom of the diaphragm 503 and a stopper 7 is connected through bolts, and a shaft seat 8 corresponding to the valve stem 501 is provided at the bottom of the valve core assembly 4 in the valve body 1.

[0041] When in use, the valve stem 501, the pad 502, the diaphragm 503, the stopper 7 and the shaft seat 8 can drive the valve core assembly 4 to move vertically, adjust its use height position, and reduce the pressure of the fluid.

[0042] For example, Figure 5 As shown, the present invention also includes that a support plate 201 is arranged in the pilot valve housing 2, a pressure regulating plate 202 is arranged in the pilot valve housing 2 at the top of the support plate 201, a spring 203 is installed between the support plate 201 and the pressure regulating plate 202 through a spring seat, an adjusting rod 204 is threadedly connected to the top of the pilot valve housing 2, and the top of the adjusting rod 204 is bolted to a hand wheel 205.

[0043] When in use, the support plate 201, the pressure regulating plate 202, and the spring 203 can be used to utilize elastic force to drive the valve core assembly 4 to perform a reset action. The adjusting rod 204 and the hand wheel 205 can be used to utilize threaded connection for vertical movement to adjust the use effect of the pressure reducing valve.

[0044] For example, Figure 1 , Figure 4 As shown, the present invention also includes that an inlet 101 is opened on one side of the valve body 1, and an outlet 102 is opened on the other side of the valve body 1, and pressure gauges 9 are provided on the top of the inlet 101 and the outlet 102, and the detection end of the pressure gauge 9 is located inside the inlet 101 and the outlet 102.

[0045] When in use, the inlet 101 and the outlet 102 facilitate the fluid to be sent out after being decompressed through the valve body 1 , and the pressure gauge 9 facilitates the detection of the pressure of the inlet 101 and the outlet 102 .

[0046] When the present invention is in use, first, the fluid enters the valve body 1 from the inlet 101. When the pressure exceeds the preset pressure, the fluid pushes the stopper 7 upward, and at the same time, the valve stem 501 drives the conical valve core 401 to move upward, so that the distance between the valve seat 3 and the conical valve core 401 gradually decreases. As the fluid flow decreases, the fluid sent out of the outlet 102 is decompressed. When the fluid pressure gradually stabilizes, the support plate 201 drives the valve stem 501 to slide downward under the push of the spring 203, thereby increasing the distance between the conical valve core 401 and the valve seat 3, and completing the balance adjustment of the fluid pressure.

[0047] When the conical valve core 401 is displaced to perform a pressure regulating action, the setting of the guide strip 402 can play an auxiliary guiding buffering effect, and reduce the impact of the fluid on the conical valve core 401. The way in which the guide strip 402 is clamped with the groove 301 can also improve the stability of use. At the same time, the first buffer pad 403 and the second buffer pad 404 can play an elastic supporting effect, further reducing the impact on the conical valve core 401 and the collision with the valve seat 3. The structure is simple, the cost is low, the use is more stable and reliable, and it is also conducive to slowing down the loss rate and extending the service life.

[0048] Moreover, the adjusting rod 204 can be driven to move vertically by turning the hand wheel 205 in advance, thereby pushing the pressure regulating plate 202 to move vertically, and thus completing the adjustment operation by compressing the spring 203, so as to adapt to different usage requirements. After completing the adjustment operation, an external air pump device can be manually connected to inflate the fixed sleeve 601 to push the piston 605 and the push rod 602 to slide inward, so that the clamping block 603 clamps the adjusting rod 205 and performs auxiliary limit locking on it, thereby improving the stability of use, avoiding the vibration generated during the operation of the pressure reducing valve affecting the stability of the position, and improving the accuracy of pressure reduction.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. The adjustable pressure reducing valve with long service life is characterized by: The valve body (1) comprises a valve body (1), a pilot valve housing (2) and a valve core assembly (4), wherein the top of the valve body (1) is connected to the pilot valve housing (2) by bolts, a valve seat (3) is arranged in the valve body (1), a valve core assembly (4) is slidably connected to the bottom of the valve seat (3) in the valve body (1), a guide assembly (5) is slidably connected to the top of the valve body (1), and limit assemblies (6) are arranged on both sides of the pilot valve housing (2); The valve core assembly (4) comprises a conical valve core (401), the outer surface of the conical valve core (401) is equidistantly connected to a guide strip (402) by welding, the periphery of the conical valve core (401) is located outside the guide strip (402) and is connected to a first buffer pad (403) by gluing, and the bottom of the conical valve core (401) is connected to a second buffer pad (404) by gluing.

2. The adjustable pressure reducing valve with a long service life according to claim 1, characterized in that: The limit assembly (6) comprises a fixing sleeve (601), and the pilot valve housing (2) is connected to the fixing sleeve (601) by bolts, one side of the fixing sleeve (601) is sleeved and connected to a push rod (602), and the push rod (602) passes through the pilot valve housing (2) through a reserved hole, one end of the push rod (602) is connected to a clamping block (603) by bolts, and the surface inside the clamping block (603) is connected to an anti-slip pad (604) by gluing.

3. The adjustable pressure reducing valve with a long service life according to claim 1, characterized in that: The guide strip (402) is provided with a reinforcing rib (405), the inner surface of the valve seat (3) is provided with a groove (301) corresponding to the guide strip (402), the top of the conical valve core (401) is connected to a third buffer pad (406) by gluing, and the conical valve core (401) is provided with a through hole (407).

4. The adjustable pressure reducing valve with a long service life according to claim 2, characterized in that: A piston (605) is provided at the other end of the push rod (602) in the fixed sleeve (601), a return spring (606) is provided at the outer sleeve of the push rod (602) in the fixed sleeve (601), and an air inlet hole (607) is provided on the outer side of the fixed sleeve (601).

5. The adjustable pressure reducing valve with a long service life according to claim 1, characterized in that: The guide assembly (5) includes a valve stem (501), and the valve body (1) is sleeve-connected to the valve stem (501); the periphery of the valve stem (501) is connected to a gasket (502) by bolts; the top of the valve body (1) is located at the bottom of the gasket (502) and a diaphragm (503) is installed through a slot; the periphery of the valve stem (501) is located at the bottom of the diaphragm (503) and a stopper (7) is connected to the bottom of the diaphragm (503) by bolts; and a shaft seat (8) corresponding to the valve stem (501) is provided at the bottom of the valve core assembly (4) in the valve body (1).

6. The adjustable pressure reducing valve with a long service life according to claim 1, characterized in that: A support plate (201) is arranged in the pilot valve housing (2); a pressure regulating plate (202) is arranged in the pilot valve housing (2) at the top of the support plate (201); a spring (203) is installed between the support plate (201) and the pressure regulating plate (202) via a spring seat; an adjusting rod (204) is connected to the top of the pilot valve housing (2) via a thread; and the top of the adjusting rod (204) is connected to a hand wheel (205) via a bolt.

7. The adjustable pressure reducing valve with a long service life according to claim 1, characterized in that: An inlet (101) is provided on one side of the valve body (1), and an outlet (102) is provided on the other side of the valve body (1). Pressure gauges (9) are provided at the tops of the inlet (101) and the outlet (102), and detection ends of the pressure gauges (9) are located inside the inlet (101) and the outlet (102).

Images