CN212480260U

CN212480260U - Three-way pressure reducing valve with overflow function

Info

Publication number: CN212480260U
Application number: CN202021281481.5U
Authority: CN
Inventors: 徐宝敏; 屠昌兵
Original assignee: Taizhou Jiaheng Valve Co ltd
Current assignee: Taizhou Jiaheng Valve Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-02-05
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a flexible and accurate pressure regulating small-volume pressure stabilizing valve, which comprises a valve body, wherein the top of the valve body is fixed with a pressure regulating installation shell through screws, the left side of the valve body is provided with an input end, the right side of the valve body is provided with an output end, the right side bottom of the valve body is provided with an overflow hole, the outside of the overflow hole is provided with a pressure regulating cylinder, the side surface of the pressure regulating cylinder is provided with an overflow pipe, the inside of the pressure regulating cylinder is provided with a conical cavity with a small left part and a large right part, a conical cutoff block with a small left part and a large right part is arranged in the conical cavity in a sliding way, the right end part of the pressure regulating cylinder is provided with an internal thread cylinder, and the right end of the internal thread cylinder is provided with a second rotating handle. The stability is high during operation, and the later maintenance is more convenient.

Description

Three-way pressure reducing valve with overflow function

Technical Field

The utility model relates to the technical field of valves, specifically be three-way relief pressure valve with overflow function.

Background

The pressure stabilizing valve is also called a pressure reducing valve, the pressure reducing valve adopts the opening degree of an opening and closing part in a control valve body to adjust the flow rate of a medium, the pressure of the medium is reduced, meanwhile, the opening degree of the opening and closing part is adjusted by means of the action of the pressure behind the valve, the pressure behind the valve is kept in a certain range, the pressure at an outlet is kept in a set range under the condition that the pressure at an inlet is continuously changed, and a subsequent life production appliance is protected.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide the tee bend relief pressure valve that has the overflow function, in the pressure regulating, can carry out the overflow to the high-pressure fluid of input proruption, release the internal pressure of input, stability and security when guaranteeing the valve body operation can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a flexible and accurate pressure regulating small-size pressure stabilizing valve comprises a valve body, wherein a pressure regulating installation shell is fixed at the top of the valve body through screws, an input end is arranged at the left side of the valve body, an output end is arranged at the right side of the valve body, a valve seat is arranged inside the valve body, a conical valve hole which is small in upper part and large in lower part is longitudinally arranged at the center of the valve seat, a pressure cylinder is arranged at the bottom surface inside the valve body, a liquid through hole is formed in the left side of the pressure cylinder, a valve cylinder is arranged in the pressure cylinder in a longitudinal sliding mode, a first spring is arranged in the pressure cylinder, a valve core is arranged at the top of the valve cylinder and is a conical body which is small in upper part and large in lower part, the valve core is positioned in the valve hole at the center of the valve seat, a valve rod is arranged at the top of the valve core, a stop disc is arranged at the top of the, the bottom of the screw rod is positioned in the pressure regulating installation shell, a second spring is arranged in the pressure regulating installation shell, the lower section of the second spring is fixed at the center of the diaphragm through a spring pad, the upper end of the second spring is contacted with the bottom end of the screw rod through the spring pad, the right bottom of the valve body is provided with an overflow hole, the outside of the overflow hole is provided with a pressure regulating cylinder, the side surface of the pressure regulating cylinder is provided with an overflow pipe, the inside of the pressure regulating cylinder is provided with a conical cavity with a small left part and a large right part, a conical cutoff block with a small left part and a large right part is arranged in the conical cavity in a sliding manner, the right end part of the pressure regulating cylinder is provided with an internal thread cylinder, the right end part of the internal thread cylinder is provided with a second rotating handle, the left end surface of the second rotating handle is provided with an external thread cylinder, the external thread, one end of the third spring is contacted with the end face of the second rotating handle, and the other end of the third spring is contacted with the end face of the flow intercepting block.

As an optimal technical scheme of the utility model, adjusting shim's the left and right sides all is provided with the sealing ring, and a sealing ring is located between adjusting shim and the internal thread section of thick bamboo, and another sealing ring is located between adjusting shim and the second swing handle.

As an optimized technical scheme of the utility model, the tapering of case and valve opening is the same.

As a preferred technical scheme of the utility model, the outside cover of first spring is equipped with and is spiral helicine rubber sleeve.

As an optimized technical proposal of the utility model, the threads of the screw sleeve and the screw rod are self-locking threads.

As an optimized technical scheme of the utility model, the side of pressure regulating installation shell is provided with the air vent.

Compared with the prior art, the beneficial effects of the utility model are that: this three-way relief pressure valve with overflow function when the pressure regulating, can overflow the proruption high-pressure fluid of input, and stability and security when the valve body operation are guaranteed to the internal pressure of release input, and this relief pressure valve internals is less, and stability is high during the operation, and the later maintenance is comparatively convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of the structure at a position a of the present invention.

In the figure: the pressure regulating valve comprises a valve body 1, a pressure regulating installation shell 2, an input end 3, an output end 4, a valve seat 5, a pressure cylinder 6, a valve cylinder 7, a valve core 8, a valve rod 9, a stop disc 10, a first spring 11, a diaphragm 12, a second spring 13, a screw rod 14, a screw sleeve 15, a first rotating handle 16, a liquid through hole 17, an air vent 18, an overflow hole 19, a pressure regulating cylinder 20, an internal thread cylinder 21, a second rotating handle 22, an external thread cylinder 23, a flow intercepting block 24, an overflow pipe 25, a third spring 26, a regulating gasket 27 and a sealing ring 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a three-way pressure reducing valve with an overflow function comprises a valve body 1, a pressure regulating installation shell 2 is fixed at the top of the valve body 1 through screws, a vent hole 18 is arranged on the side surface of the pressure regulating installation shell 2, when a diaphragm 12 deforms, the inner space of the pressure regulating installation shell 2 changes, the vent hole 18 is used for exhausting or intaking air, pressure balance in the pressure regulating installation shell 2 is guaranteed, an input end 3 is arranged on the left side of the valve body 1, liquid enters the valve body 1 from the input end 3, an output end 4 is arranged on the right side of the valve body 1, the liquid in the valve body 1 is exhausted from the output end 4, a valve seat 5 is arranged inside the valve body 1, a conical valve hole with a small upper part and a large lower part is longitudinally arranged in the center of the valve seat 5, a pressure cylinder 6 is arranged on the bottom surface inside the valve body 1, a liquid through hole 17 is arranged on the left side of the pressure cylinder 6, the valve cylinder 7 is pressed upwards, the pressure cylinder 6 is internally provided with a first spring 11, the first spring 11 provides upward elastic force for the valve core 8, the outer part of the first spring 11 is sleeved with a spiral rubber sleeve, the first spring 11 is soaked in liquid for a long time, the rubber sleeve can protect the first spring 11 from rusting, the service life of the pressure stabilizing valve is prolonged, the top of the valve cylinder 7 is provided with the valve core 8, the valve core 8 is a conical body with a small upper part and a large lower part, the valve core 8 is positioned in a valve hole at the center of the valve seat 5, the conicity of the valve core 8 and the conicity of the valve hole are the same, liquid flows to the output end 4 from a gap between the valve core 8 and the valve hole, the gap is increased, the output pressure of the output end 4 is increased, the gap is reduced, the output pressure of the output end 4 is reduced, the top of the valve core 8 is provided with a valve rod 9, the top of, the liquid flow in the valve body 1 is blocked, a diaphragm 12 is arranged at the joint of the valve body 1 and the pressure regulating installation shell 2, the diaphragm 12 is used for sealing, meanwhile, the width of a gap between the valve core 8 and the valve hole can be adjusted through the deformation of the diaphragm 12, so that the output pressure of the output end 4 is adjusted, a threaded sleeve 15 is arranged at the top of the pressure regulating installation shell 2, a screw 14 is arranged in the threaded sleeve 15 in a matched manner, the threads of the threaded sleeve 15 and the screw 14 are self-locking threads, the top of the screw 14 is positioned outside the pressure regulating installation shell 2 and is provided with a rotating handle 16, the bottom of the screw 14 is positioned inside the pressure regulating installation shell 2, a second spring 13 is arranged inside the pressure regulating installation shell 2, the initial gap between the valve core 8 and the valve hole can be determined by adjusting the initial compression amount of the second spring 13, the initial output pressure of the output end 4 is determined, the gap between the valve core 8 and the valve hole is changed, the lower section of the second spring 13 is fixed at the center of the diaphragm 12 through a spring pad, the upper end of the second spring 13 is contacted with the bottom end of the screw 14 through the spring pad, the rotary handle 16 is rotated to adjust the position of the lower end of the screw 14, further the compression amount of the second spring 13 is changed, the second spring 13 applies downward elastic force to the valve core 8, the elastic force is the same as the upward elastic force applied to the valve core 8 by the first spring 11, the direction is opposite, the gap width between the valve core 8 and the valve hole is determined by two mutually balanced elastic forces, when the pressure of the input end 3 is increased, the valve cylinder 7 is subjected to upward pressure increase, the valve core 8 moves upwards, the gap width between the valve core 8 and the valve hole is reduced, the output flow of the output end 4 is stabilized, when the pressure of the input end 3 is reduced, the valve cylinder 7 is subjected to upward pressure, the output flow of the output end 4 is stabilized, the purpose of stabilizing the pressure is achieved, an overflow hole 19 is arranged at the bottom of the right side of the valve body 1, a pressure adjusting cylinder 20 is arranged outside the overflow hole 19, an overflow pipe 25 is arranged on the side surface of the pressure adjusting cylinder 20, a tapered cavity with a small left part and a large right part is arranged inside the pressure adjusting cylinder 20, a tapered cutoff block 24 with a small left part and a large right part is arranged in the tapered cavity in a sliding manner, an internal thread cylinder 21 is arranged at the right end part of the pressure adjusting cylinder 20, a second rotating handle 22 is arranged at the right end part of the internal thread cylinder 21, an external thread cylinder 23 is arranged at the left end surface of the second rotating handle 22, the external thread cylinder 23 is screwed in the internal thread cylinder 21, an adjusting gasket 27 is padded at the contact part of the edge of the second rotating handle 22 and the internal thread cylinder 21, the initial compression amount of a third spring 26 can be adjusted by replacing the adjusting gasket, one sealing ring 28 is positioned between the adjusting gasket 27 and the internal thread cylinder 21, the other sealing ring 28 is positioned between the adjusting gasket 27 and the second rotary handle 22, the sealing performance of the pressure adjusting cylinder 20 is ensured, the pressure adjusting cylinder 20 is provided with a third spring 26, one end of the third spring 26 is contacted with the end surface of the second rotary handle 22, the other end is contacted with the end surface of the cut-off block 24, when sudden high-pressure liquid appears at the input end 3, the valve core 8 is upwards moved under the upward pressure to block the valve hole of the valve seat 5, the high-pressure liquid in the input end 3 enters the pressure regulating cylinder 20 from the overflow hole 19, the left end surface of the interception block 24 in the pressure regulating cylinder 20 is pushed rightwards by the liquid, when the thrust is larger than the elastic force of the third spring 26 to the interception block 24, the interception block 24 moves to the right, so that a gap is formed between the interception block 24 and the inner wall of the pressure adjusting cylinder 20, and the high-pressure liquid flows to the overflow pipe 25 from the gap, thereby achieving the effect of releasing the liquid pressure in the input end 3.

When in use: the initial gap between the valve core 8 and the valve hole can be determined by adjusting the initial compression amount of the second spring 13, the initial output pressure of the output end 4 is determined, when the input pressure is different from the initial output pressure, the valve core 8 can move under the hydraulic action, the gap between the valve core 8 and the valve hole is changed, the rotating handle 16 can adjust the position of the lower end of the screw rod 14, and further the compression amount of the second spring 13 is changed, the second spring 13 applies downward elastic force to the valve core 8, the elastic force is the same as the upward elastic force applied to the valve core 8 by the first spring 11, the directions are opposite, the gap width between the valve core 8 and the valve hole is determined by two mutually balanced elastic forces, when the pressure of the input end 3 is increased, the valve cylinder 7 is subjected to upward pressure increase, the valve core 8 moves upwards, the gap width between the valve core 8 and the valve hole is reduced, the output flow of the output, the valve cylinder 7 is reduced by upward pressure, the valve core 8 moves downwards, the gap width between the valve core 8 and the valve hole is increased, the output flow of the output end 4 is stabilized, the purpose of stabilizing the pressure is achieved, when sudden high-pressure liquid appears at the input end 3, the valve core 8 moves upwards by upward pressure, the valve hole of the valve seat 5 is blocked, the high-pressure liquid in the input end 3 enters the pressure adjusting cylinder 20 from the overflow hole 19, the left end face of the flow-stopping block 24 in the pressure adjusting cylinder 20 is pushed rightwards by the liquid, when the pushing force is larger than the elastic force of the third spring 26 on the flow-stopping block 24, the flow-stopping block 24 moves rightwards, so that a gap appears between the flow-stopping block 24 and the inner wall of the pressure adjusting cylinder 20, the high-pressure liquid flows to the overflow pipe 25.

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

Claims

1. A three-way pressure reducing valve with an overflow function comprises a valve body (1), wherein a pressure regulating installation shell (2) is fixed at the top of the valve body (1) through a screw, an input end (3) is arranged at the left side of the valve body (1), an output end (4) is arranged at the right side of the valve body (1), a valve seat (5) is arranged inside the valve body (1), a conical valve hole with a small upper part and a large lower part is longitudinally arranged at the center of the valve seat (5), a pressure cylinder (6) is arranged at the bottom inside the valve body (1), a liquid through hole (17) is arranged at the left side of the pressure cylinder (6), a valve cylinder (7) is arranged in the pressure cylinder (6) in a longitudinal sliding manner, a first spring (11) is arranged in the pressure cylinder (6), a valve core (8) is arranged at the top of the valve cylinder (7), the valve core (8) is a conical body with a small upper part and a, the top of valve rod (9) is provided with by dish (10), the junction of valve body (1) and pressure regulating installation shell (2) is provided with diaphragm (12), the top of pressure regulating installation shell (2) is provided with swivel nut (15), screw rod (14) are installed to swivel nut (15) fit in, the top of screw rod (14) is located the outside of pressure regulating installation shell (2) and is provided with swing handle (16), the bottom of screw rod (14) is located the inside of pressure regulating installation shell (2), the inside of pressure regulating installation shell (2) is provided with second spring (13), the centre department at diaphragm (12) is fixed through the spring pad to the hypomere of second spring (13), the bottom contact of spring pad and screw rod (14) is passed through to the upper end of second spring (13), its characterized in that: an overflow hole (19) is formed in the bottom of the right side of the valve body (1), a pressure adjusting cylinder (20) is arranged outside the overflow hole (19), an overflow pipe (25) is arranged on the side face of the pressure adjusting cylinder (20), a tapered cavity with a small left part and a large right part is arranged inside the pressure adjusting cylinder (20), a tapered cutoff block (24) with a small left part and a large right part is arranged in the tapered cavity in a sliding mode, an internal thread cylinder (21) is arranged at the right end part of the pressure adjusting cylinder (20), a second rotating handle (22) is arranged at the right end part of the internal thread cylinder (21), an external thread cylinder (23) is arranged on the left end face of the second rotating handle (22), the external thread cylinder (23) is screwed in the internal thread cylinder (21), an adjusting gasket (27) is arranged at the contact position of the edge of the second rotating handle (22) and the internal thread cylinder (21), a third spring (26) is arranged on the pressure adjusting cylinder (20), one end, the other end is contacted with the end surface of the interception block (24).

2. The relief valve according to claim 1, wherein: the left side and the right side of the adjusting gasket (27) are provided with sealing rings (28), one sealing ring (28) is located between the adjusting gasket (27) and the internal thread cylinder (21), and the other sealing ring (28) is located between the adjusting gasket (27) and the second rotary handle (22).

3. The relief valve according to claim 1, wherein: the valve core (8) and the valve hole have the same taper.

4. The relief valve according to claim 1, wherein: the outside cover of first spring (11) is equipped with and is spiral helicine rubber sleeve.

5. The relief valve according to claim 1, wherein: the threads of the threaded sleeve (15) and the threaded rod (14) are self-locking threads.

6. The relief valve according to claim 1, wherein: and a vent hole (18) is formed in the side surface of the pressure regulating mounting shell (2).