CN-121803655-B - Multi-valve-core linkage self-regulating flow high-response pressure regulating valve

CN121803655BCN 121803655 BCN121803655 BCN 121803655BCN-121803655-B

Abstract

The multi-valve-core linkage self-flow-regulating high-response pressure regulating valve comprises a valve body, a first pushing component, a second pushing component and a sealing control component, wherein the valve body comprises a fluid inlet, a fluid containing cavity and a fluid outlet which can be communicated with each other, the first pushing component and the second pushing component are both arranged in the valve body, the first pushing component is used for pushing the second pushing component, the second pushing component is used for pushing the sealing control component, the sealing control component is arranged in the fluid containing cavity, the sealing control component is used for sealing the fluid containing cavity, the first pushing component can be switched between a first position and a second position, the fluid inlet is communicated with the fluid outlet in the first position, and the fluid outlet is disconnected from the fluid inlet in the second position. Compared with the prior art, the multi-valve-core linkage self-regulation flow high-response pressure regulating valve provided by the application can obtain a large flow coefficient while obtaining a low opening pressure so as to effectively expand the use scene.

Inventors

LUO XIANGJIE
FAN LIGONG
PENG QIDONG
HE LIKE
WANG JINFU

Assignees

维特力（深圳）流体工程有限公司

Dates

Publication Date: 20260505
Application Date: 20260311

Claims (10)

1. The multi-valve core linkage self-regulating flow high-response pressure regulating valve is characterized by comprising a valve body, a first pushing component, a second pushing component and a sealing control component; the valve body comprises a fluid inlet, a fluid accommodating cavity and a fluid outlet, the fluid outlet is communicated with the fluid accommodating cavity, and the fluid inlet can be communicated with the fluid outlet through the fluid accommodating cavity; The first pushing component and the second pushing component are movably arranged in the valve body, the second pushing component is arranged at the bottom of the first pushing component, the second pushing component is positioned at the top of the fluid accommodating cavity, and the pushing end of the second pushing component can extend into the fluid accommodating cavity; The sealing control assembly is arranged in the fluid accommodating cavity, the sealing control assembly comprises a first resetting piece, a pressure valve core and a flow valve core, the flow valve core is arranged at the top of the pressure valve core, the flow valve core is used for sealing the fluid accommodating cavity, the flow valve core comprises a through runner hole, the pushing end of the second pushing assembly can penetrate through the runner hole and is abutted with the pressure valve core, the first resetting piece is arranged between the top of the flow valve core and the pushing end of the second pushing assembly, the first resetting piece can drive the flow valve core to move relative to the fluid accommodating cavity to release sealing, the top of the pressure valve core can be abutted with the bottom of the flow valve core to seal the runner hole, so that the communication between the fluid outlet and the fluid inlet is disconnected, and the sealing contact area between the top of the pressure valve core and the bottom of the flow valve core is smaller than that between the top of the flow valve core and the fluid accommodating cavity; The first pushing component can be switched between a first position and a second position, in the first position, the pushing end of the first pushing component is propped against the top of the second pushing component, the pushing end of the second pushing component is propped against the pressure valve core, the pressure valve core is separated from the flow valve core, the first reset piece drives the flow valve core to move relative to the fluid accommodating cavity so as to enable the fluid inlet to be communicated with the fluid accommodating cavity, in the second position, the pushing end of the first pushing component is separated from the second pushing component, the pushing end of the second pushing component is separated from the pressure valve core, the top of the pressure valve core and the bottom of the flow valve core are propped against each other to seal the flow passage hole, and the flow valve core is reset and seals the fluid accommodating cavity so as to disconnect the communication between the fluid outlet and the fluid inlet.
2. The multi-valve-core linkage self-regulating flow high-response pressure regulating valve according to claim 1, wherein the sealing control assembly further comprises a sealing control seat, a circumferential wall of the sealing control seat is in sealing connection with an inner wall of the fluid accommodating cavity, the sealing control seat comprises a through flow cavity, the flow valve core, the pressure valve core and the first reset piece are all arranged in the flow cavity, the top of the flow valve core can be in sealing contact with a top wall of the flow cavity, and the first reset piece is arranged between the top of the flow valve core and the top wall of the flow cavity.
3. The multiple spool-linked self-regulating flow rate high-response pressure regulator valve of claim 2, wherein the seal control assembly further comprises a second reset member disposed between the pressure spool and the bottom wall of the flow chamber, the second reset member being operable to urge the pressure spool toward the flow spool, and wherein a driving force of the second reset member is greater than a driving force of the first reset member.
4. The multi-spool linkage self-regulating flow high-response pressure regulating valve of claim 2, wherein the flow spool further comprises a spool body and a flow channel hole disposed in the middle of the spool body, the flow channel disposed at the bottom of the spool body, the flow channel for guiding fluid to the flow channel Kong Huiju.
5. The multiple spool linkage self-regulating flow high-response pressure regulator valve of claim 4, wherein the peripheral surface of the spool body comprises a plurality of planar surfaces facing the inner wall of the flow chamber with a gap therebetween.
6. The multi-valve-core linkage self-flow-regulating high-response pressure regulating valve according to claim 3, wherein the first pushing component comprises an operating handle, a driving screw and a pushing seat, the operating handle is rotatably arranged on the outer peripheral surface of the valve body, the driving screw is arranged in the valve body, the operating handle is in transmission connection with one end of the driving screw to drive the driving screw to rotate, and the other end of the driving screw is in transmission connection with the pushing seat to drive the pushing seat to push the top of the second pushing component.
7. The multi-valve-core linkage self-flow-regulating high-response pressure regulating valve according to claim 6, wherein the pushing seat comprises an upper pushing seat, a lower pushing seat and a third reset piece, the upper pushing seat is in transmission connection with the driving screw, the lower pushing seat is used for pushing the top of the second pushing component, the third reset piece is arranged between the upper pushing seat and the lower pushing seat, the third reset piece can drive the lower pushing seat to be close to the top of the second pushing component, the bottom of the lower pushing seat is propped against the top of the second pushing component, and the driving force of the third reset piece is larger than that of the second reset piece.
8. The multiple spool linkage self-regulating flow high-response pressure regulating valve of claim 2, wherein the second urging assembly comprises an ejector pin, an urging end of the ejector pin can pass through the flow passage hole to urge the pressure spool, the ejector pin comprises a limit step, a stop step is arranged at a top wall of the flow cavity, and the stop step can be abutted against the limit step to block the ejector pin from moving.
9. The multiple spool linkage self-regulating flow high-response pressure regulating valve of claim 8, wherein the second urging assembly further comprises an urging plunger and a plunger seat, the outer peripheral wall of the plunger seat is in sealing connection with the inner wall of the fluid accommodating cavity, the plunger seat comprises an accommodating cavity, the urging plunger is sealingly arranged in the accommodating cavity, the bottom of the urging plunger can be in sealing connection with the top of the thimble, and the top of the urging plunger can mutually prop against the bottom of the first urging assembly.
10. The multi-spool linkage self-regulating flow rate high-response pressure regulating valve according to claim 9, wherein the pushing plunger comprises a plunger body, a first flow passage and a second flow passage, the first flow passage extends from the bottom of the plunger body to the top, the first flow passage can be communicated with the fluid accommodating cavity, the second flow passage extends from the peripheral wall of the plunger body to the axis of the plunger body, the second flow passage is communicated with the first flow passage, a third flow passage is arranged in the valve body, the third flow passage extends from the bottom surface of the valve body to the top, and the third flow passage is communicated with the second flow passage, so that the fluid can be discharged from the fluid accommodating cavity to the outside of the valve body along the first flow passage, the second flow passage and the third flow passage in sequence.

Description

Multi-valve-core linkage self-regulating flow high-response pressure regulating valve Technical Field The embodiment of the application relates to the technical field of fluid control, in particular to a multi-valve-core linkage self-regulating flow high-response pressure regulating valve. Background Pressure regulating valves are a common fluid control component that is widely used in the pressure control of fluids. The existing pressure regulating valve mainly comprises a valve body and a main valve core, wherein a fluid inlet, a fluid accommodating cavity and a fluid outlet are formed in the valve body, the main valve core is arranged in the fluid accommodating cavity, and the main valve core is tightly pressed in the fluid accommodating cavity and is in sealing contact with the inner wall of the fluid accommodating cavity so as to seal the fluid accommodating cavity. Therefore, when the fluid is to be transferred from the fluid inlet to the fluid inlet, the seal between the main valve element and the fluid accommodating chamber needs to be released so that the fluid flowing in from the fluid inlet can flow from the gap between the main valve element and the fluid accommodating chamber to the fluid outlet. The force required for releasing the seal between the main valve core and the fluid accommodating cavity is in positive correlation with the sealing contact area between the main valve core and the fluid accommodating cavity, namely, the larger the sealing contact area is, the larger the force required for releasing the seal is (namely, the larger the opening pressure is), and when the sealing contact area is larger, the larger the sealing diameter is, and at the moment, the larger the flow area of the main valve core is, and the larger the flow coefficient is. The inventor finds that the existing pressure regulating valve has at least the following problems in the process of realizing the invention that the existing pressure regulating valve can sharply reduce the flow area of a main valve core while reducing the sealing diameter, and can obtain lower opening pressure, but the flow coefficient is too small, when the sealing diameter is increased to obtain a large flow area, the opening pressure is increased, and the opening pressure is derived from the elastic force provided by a main spring, so that when the opening pressure is larger, the pressure regulating interval is smaller for the same main spring, which limits the application scene of the pressure regulating valve. Therefore, the above-described problems need to be solved. Disclosure of Invention The application aims to provide a multi-valve-core linkage self-regulating flow high-response pressure regulating valve which can obtain a large flow coefficient while obtaining a low opening pressure. In order to achieve the above purpose, the multi-valve-core linkage self-regulating flow rate high-response pressure regulating valve comprises a valve body, a first pushing component, a second pushing component and a sealing control component, wherein the valve body comprises a fluid inlet, a fluid accommodating cavity and a fluid outlet, the fluid outlet is communicated with the fluid accommodating cavity, the fluid inlet can be communicated with the fluid outlet through the fluid accommodating cavity, the first pushing component and the second pushing component are movably arranged in the valve body, the second pushing component is arranged at the bottom of the first pushing component, the second pushing component is positioned at the top of the fluid accommodating cavity, the pushing end of the second pushing component can extend into the fluid accommodating cavity, the sealing control component is arranged in the fluid accommodating cavity, the sealing control component comprises a first reset piece, a pressure valve core and a flow valve core, the flow valve core is arranged at the top of the pressure valve core, the flow valve core is used for sealing the fluid accommodating cavity, the flow comprises a through flow channel component, the second pushing component can be connected with the top of the fluid accommodating cavity through a flow channel, the second pushing component can be disconnected from the top of the fluid accommodating cavity through the flow channel, the flow channel can be disconnected from the top of the fluid accommodating cavity through the second pushing component, the flow valve core can be connected with the top of the fluid accommodating cavity through the flow core through the flow channel, the flow channel can be disconnected from the top through the flow channel through the reset piece, and the flow valve core can be sealed by the flow control component, the sealing contact area between the top of the pressure valve core and the bottom of the flow valve core is smaller than the sealing contact area between the top of the flow valve core and the fluid containing cavity, the first pushing component can be switched betw