CN214367956U

CN214367956U - Pressure adjustable quick on-off valve

Info

Publication number: CN214367956U
Application number: CN202120147383.0U
Authority: CN
Inventors: 王晶晶; 蒋亚雄
Original assignee: Suzhou Yuexiang Intelligent Technology Co ltd
Current assignee: Suzhou Yuexiang Intelligent Technology Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-10-08
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to a quick on-off valve with adjustable pressure. The device comprises a valve block, a shaft-driven valve component and a pressure control valve component; the valve block is used for fluid shunting and comprises a fluid inlet and a plurality of fluid outlets, the axial motion valve assembly is hermetically connected with the fluid outlets of the valve block and used for controlling the on-off of fluid and unloading the rear end of the axial motion valve assembly, and the pressure control valve assembly is hermetically connected with the other fluid outlet of the valve block and used for unloading the front end of the axial motion valve assembly and regulating the pressure of the fluid flowing into the axial motion valve assembly; the axial-motion valve assembly comprises an electromagnetic valve, the electromagnetic valve controls high-pressure gas to flow into an inner cavity of the axial-motion valve assembly to drive the axial-motion valve assembly to be switched on and off, the pressure control valve assembly comprises a pressure regulating valve, an outlet of the electromagnetic valve is also connected with an inlet of the pressure regulating valve through an air pipe, and an outlet of the pressure regulating valve is communicated with the inner cavity of the pressure control valve assembly to control the pressure control valve assembly to be switched on and off. The utility model discloses effectively improve application range and life, effectively avoided the damage of working pump simultaneously.

Description

Pressure adjustable quick on-off valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to quick on-off valve with adjustable pressure.

Background

Along with the improvement of productivity, the production efficiency is improved, and the requirement on time is stricter and stricter; in order to improve efficiency, uninterrupted production of products becomes particularly important, and meanwhile, the demand for supply of fluid is higher and higher, stable and accurate output, rapid fluid access, and unloading of high-pressure fluid at the front end and the rear end of the valve become particularly important.

The products on the market at present have the following defects that firstly, an independent pressure control valve has no on-off function of fluid, and the conventional pressure control valve is easy to block; secondly, the conventional valve with the rapid on-off and unloading functions cannot have the pressure regulating function at the same time; thereby influencing the processing rhythm and reducing the production efficiency and the quality of products.

In the production process, the switching of the valve causes that high-pressure fluid, especially fluid with liquid property, is remained in a pipeline between the valve and the processing end, and the fluid cannot be unloaded at the same time, so that the processing end is influenced to replace a processing tool, the production efficiency is influenced, and the processing equipment is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide an effectively carry out the off-load to the valve front and back end, and possess quick break-make and pressure adjustable break-make valve simultaneously.

The utility model provides a technical scheme that its technical problem adopted is:

a pressure adjustable quick on-off valve comprises a valve block, a shaft-driven valve component and a pressure control valve component; the valve block is used for shunting fluid and comprises a fluid inlet and a plurality of fluid outlets, the axial motion valve assembly is hermetically connected with the fluid outlet of the valve block and used for controlling the on-off of the fluid and unloading the rear end of the axial motion valve assembly, the axial motion valve assembly adopts a two-way axial motion valve assembly or a three-way axial motion valve assembly, and the pressure control valve assembly is hermetically connected with the other fluid outlet of the valve block and used for unloading the front end of the axial motion valve assembly and regulating the pressure of the fluid flowing into the axial motion valve assembly; the axial-motion valve assembly comprises an electromagnetic valve, the electromagnetic valve controls high-pressure gas to flow into an inner cavity of the axial-motion valve assembly to drive the axial-motion valve assembly to be switched on and off, the pressure control valve assembly comprises a pressure regulating valve, an outlet of the electromagnetic valve is further connected with an inlet of the pressure regulating valve through an air pipe, and an outlet of the pressure regulating valve is communicated with the inner cavity of the pressure control valve assembly to control the pressure control valve assembly to be switched on and off.

Further, the pressure control valve assembly comprises a pressure valve cylinder body, a pressure valve end cover, a pressure valve piston rod, a pressure valve spring, a pressure valve piston, a pressure valve sealing assembly, a pressure valve bushing, a pressure valve sealing seat and the pressure regulating valve; the pressure valve end cover is arranged at the rear end of the pressure valve cylinder body and is in static sealing connection with the pressure valve cylinder body through a sealing ring, the pressure valve bushing is arranged at the front end of the pressure valve cylinder body, and the pressure valve sealing seat is arranged at the front end of the pressure valve bushing and is in static sealing connection with the pressure valve bushing; the pressure valve piston rod, the pressure valve spring and the pressure valve piston are arranged in the inner cavity of the pressure valve cylinder body, the pressure valve piston is sleeved on the pressure valve piston rod and is fixedly connected with the pressure valve piston rod, the pressure valve spring is arranged between the pressure valve piston and the pressure valve end cover, the front part of the piston rod of the pressure valve is in dynamic sealing connection with the inner side of the pressure valve bush through a second dynamic sealing ring, the rear part of the pressure valve is in dynamic sealing connection with the inner side of the pressure valve end cover through a first pressure valve sealing ring and a second pressure valve sealing ring, the pressure valve piston is provided with a first dynamic sealing ring and is in dynamic sealing connection with the inner cavity of the pressure valve cylinder body through the first dynamic sealing ring, the pressure valve sealing assembly is fixed at the front end of the pressure valve piston rod and is matched with the pressure valve sealing seat to realize the on-off of the pressure valve control assembly; the pressure regulating valve is fixedly connected with the pressure valve cylinder body through a pressure valve adapter plate.

Further, a sealing ring is arranged between the pressure valve bushing and the pressure valve sealing seat and is in sealing connection with the inner side of the fluid outlet of the valve block through the sealing ring.

Further, the shaft-driven valve assembly comprises a shaft-driven valve cylinder body, a shaft-driven valve bushing assembly, a shaft-driven valve sealing assembly, a shaft-driven valve piston, a shaft-driven valve spring, a shaft-driven valve piston rod, a shaft-driven valve end cover and the electromagnetic valve; the front end and the rear end of a shaft-driven valve cylinder body are respectively provided with the shaft-driven valve bush component to form a front shaft-driven valve bush component and a rear shaft-driven valve bush component, the shaft-driven valve bush component is in static sealing connection with the shaft-driven valve cylinder body through a sealing ring, the front end of the front shaft-driven valve bush component is provided with the shaft-driven valve sealing component, the rear shaft-driven valve bush is in static sealing connection with a shaft-driven valve end cover through a sealing ring, the inner cavity of the shaft-driven valve cylinder body is provided with the shaft-driven valve piston, a shaft-driven valve spring and a shaft-driven valve piston rod, the shaft-driven valve piston is sleeved on the shaft-driven valve piston rod and is fixedly connected with the shaft-driven valve piston rod, the shaft-driven valve spring is arranged between the shaft-driven valve bush and the rear shaft-driven valve bush component, and the shaft-driven valve piston rod is in dynamic sealing connection with the inner side of the shaft-driven valve bush component through a first shaft-driven valve sealing ring and a second shaft sealing ring, the shaft-driven valve piston is provided with a movable sealing ring and is in movable sealing connection with the inner cavity of the shaft-driven valve cylinder body through the movable sealing ring, and the shaft-driven valve sealing assembly is matched with the shaft-driven valve piston rod to realize the on-off of the shaft-driven valve assembly; the electromagnetic valve is fixedly connected with the shaft-driven valve cylinder body through a shaft-driven valve adapter plate.

Furthermore, a support ring is further arranged on the inner side of the shaft-driven valve bush assembly and is in dynamic sealing connection with the shaft-driven valve piston rod.

Furthermore, a shaft valve C port end cover is arranged between a rear shaft valve bush component at the rear end of the shaft valve component and the shaft valve end cover, an inlet of the shaft valve C port end cover is in static seal connection with the rear shaft valve bush component through a seal ring, a first outlet of the shaft valve C port end cover is fixedly connected with the shaft valve end cover, a shaft valve seal seat is arranged at the inner sides of the first outlet and the shaft valve end cover, and the shaft valve seal seat is in static seal connection with the shaft valve C port end cover and the shaft valve end cover through seal rings respectively; the front and the back of the shaft valve sealing seat are provided with circulation holes, the front end of each circulation hole is communicated with an inlet and a second outlet of a C-port end cover of the shaft valve, the rear end of each circulation hole is communicated with a shaft valve end cover, the front end of the shaft valve sealing seat is provided with a sealing ring, and a shaft valve piston rod is matched with the shaft valve sealing seat to realize unloading of the rear end of the shaft valve component.

Furthermore, a shaft-driven valve connecting plate is arranged on the outer side of the shaft-driven valve end cover.

Furthermore, a sealing ring is arranged on the outer side of the front shaft dynamic valve bushing and is in sealing connection with the inner side of the fluid outlet of the valve block through the sealing ring.

Further, the pressure regulating valve is a manual pressure regulating valve or an electric pressure regulating valve.

The utility model has the advantages that:

the utility model discloses a fluid control engineering's adjustable ooff valve of pressure, integrated switch axle movable valve subassembly and pressure control valve subassembly, it is extensive to use, can effectively export stable pressure, through the break-make of two-way axle movable valve subassembly quick control fluid, pressure control valve subassembly has pressure regulating and drainage function concurrently, reaches the function of not cutting off the water supply, quick switch. The two-way axial-motion valve component can be improved into a three-way axial-motion valve component to rapidly control the on-off of fluid, and meanwhile, the fluid with high pressure at the rear end of the valve can be unloaded by using the C port, and the fluid and a pipeline are coaxially mounted to rapidly switch. Effectively improves the application range and the service life, and simultaneously effectively avoids the damage of the working pump.

Drawings

FIG. 1 is a structural diagram of embodiment 1 of the present invention;

fig. 2 is a structural view of embodiment 2 of the present invention;

FIG. 3 is a block diagram of FIG. 1 labeled 3;

FIG. 4 is a block diagram of FIG. 1 labeled 2;

FIG. 5 is an enlarged block diagram of FIG. 4, designated 202;

FIG. 6 is a block diagram of FIG. 2, labeled 2;

labeled as:

1. the valve block 2, the shaft-driven valve component 3, the pressure control valve component 4 and the air pipe; 201. the axial-motion valve comprises an axial-motion valve cylinder body, 202, an axial-motion valve bushing assembly, 203, an axial-motion valve sealing assembly, 204, an axial-motion valve piston, 205, an axial-motion valve spring, 206, an axial-motion valve piston rod, 207, an axial-motion valve end cover, 208, an axial-motion valve connecting plate, 209, an axial-motion valve adapter plate, 210, an electromagnetic valve, 211, an axial-motion valve C port end cover, 212 and an axial-motion valve sealing seat; 301. the pressure valve comprises a pressure valve cylinder body 302, a pressure valve end cover 303, a pressure valve piston rod 304, a pressure valve spring 305, a pressure valve piston 306, a pressure valve sealing assembly 307, a pressure valve bushing 308, a pressure valve sealing seat 309, a pressure valve adapter plate 310 and a pressure regulating valve; 2011. the axial valve comprises an axial valve left cavity, 2012, an axial valve right cavity, 2021, a first axial valve seal ring, 2022, a second axial valve seal ring, 2023, a support ring, 3011, a pressure valve upper cavity, 3012, a pressure valve lower cavity, 3021, a first pressure valve seal ring, 3022, a second pressure valve seal ring, 3051, a first dynamic seal ring, 3071, and a second dynamic seal ring.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

A pressure adjustable quick on-off valve is shown in figures 1-6 and comprises a valve block 1, a shaft-driven valve component 2 and a pressure control valve component 3. The valve block 1 is used for fluid shunting and comprises a fluid inlet and a plurality of fluid outlets, the axial motion valve component 2 is hermetically connected with the fluid outlet of the valve block 1 and used for controlling the on-off of fluid and unloading the rear end of the axial motion valve component 2, the axial motion valve component 2 adopts a two-way axial motion valve component or a three-way axial motion valve component, and the pressure control valve component 3 is hermetically connected with the other fluid outlet of the valve block 1 and used for unloading the front end of the axial motion valve component 2 and regulating the pressure of the fluid flowing into the axial motion valve component 2; the axial valve component 2 comprises an electromagnetic valve, the electromagnetic valve controls high-pressure gas to flow into the inner cavity of the axial valve component to drive the axial valve component to be switched on and off, the pressure control valve component 3 comprises a pressure regulating valve, the outlet of the electromagnetic valve is also connected with the inlet of the pressure regulating valve through an air pipe 4, and the outlet of the pressure regulating valve is communicated with the inner cavity of the pressure control valve component 3 to control the on and off of the pressure control valve component 3.

As shown in fig. 3, the pressure control valve assembly 3 includes a pressure valve cylinder 301, a pressure valve end cover 302, a pressure valve piston rod 303, a pressure valve spring 304, a pressure valve piston 305, a pressure valve seal assembly 306, a pressure valve bushing 307, a pressure valve seal seat 308, and a pressure regulating valve 310. The pressure valve end cover 302 is arranged at the rear end of the pressure valve cylinder body 301 and is in static seal connection with the pressure valve cylinder body through a sealing ring, the pressure valve lining 307 is arranged at the front end of the pressure valve cylinder body 301, and the pressure valve sealing seat 308 is arranged at the front end of the pressure valve lining 307 and is in static seal connection with the pressure valve lining 307; the pressure valve piston rod 303, the pressure valve spring 304 and the pressure valve piston 305 are arranged in the inner cavity of the pressure valve cylinder 301, the pressure valve piston 305 is sleeved on and fixedly connected with the pressure valve piston rod 303, the pressure valve piston is fixedly connected with the pressure valve piston rod 303 in a hot-fitting mode, the pressure valve spring 304 is arranged between the pressure valve piston 305 and the pressure valve end cover 302, the front part of the pressure valve piston rod 303 is in dynamic sealing connection with the inner side of the pressure valve bushing 307 through a second dynamic sealing ring 3071, and the rear part of the pressure valve piston rod 303 is in dynamic sealing connection with the inner side of the pressure valve end cover 302 through a first pressure valve sealing ring 3021 and a second pressure valve sealing ring 3022. A first dynamic seal ring 3051 is mounted on the pressure valve piston 305 and is in dynamic seal connection with the inner cavity of the pressure valve cylinder 301 through the first dynamic seal ring 3051, a pressure valve seal assembly 306 is fixed at the front end of the pressure valve piston rod 303, and the pressure valve seal assembly 306 is matched with a pressure valve seal seat 308 to realize the on-off of the pressure valve control assembly 3; the pressure regulating valve 310 is fixedly connected to the pressure valve cylinder 301 via a pressure valve adapter plate 309. A sealing ring is arranged between the pressure valve bushing 307 and the pressure valve sealing seat 308, and is connected with the inner side of the fluid outlet of the valve block 1 in a sealing way through the sealing ring.

The first pressure valve sealing ring 3021 and the second pressure valve sealing ring 3022 are used for sealing gas and liquid, respectively, and gas and liquid leakage is effectively avoided through two-stage linkage. The pressure valve piston 305 divides the pressure valve cylinder body 301 into a pressure valve upper cavity 3011 and a pressure valve lower cavity 3012 through a first movable seal ring 3051, in the present invention, the pressure valve lower cavity 3012 is conducted with the outlet of the pressure regulating valve 310 through the pressure valve adapter plate 309, the pressure regulating valve 310 drives the pressure valve piston 305 to move up and down by controlling the pressure entering the pressure valve lower cavity 3012, if shown in fig. 3, when the pressure is increased, the pressure in the pressure valve lower cavity 3012 is increased, the pressure valve piston 305 is driven to move up, the pressure valve piston 305 drives the pressure valve piston rod 303 to move up, the pressure valve seal assembly 306 at the front end (upper end) of the pressure valve piston rod 303 is matched with the pressure valve seal seat 308 for plugging, when the pressure is reduced, the pressure valve piston 305 is driven to move down by the pressure valve spring resetting, the pressure valve piston 305 drives the pressure valve piston rod 303 to move down, the pressure valve seal assembly is separated from the pressure valve seal seat 308 and opened, the pressure of the pressure valve lower cavity 3012 is controlled by the pressure regulating valve 310 to control the opening and closing of the pressure valve sealing assembly 306 and the pressure valve sealing seat 308. The pressure valve sealing seat 308 is provided with an opening, the pressure valve sealing assembly 306 comprises a sealing ring and is fixed with the front end (upper end) of the pressure valve piston rod 303 through a bolt, the pressure valve piston rod 303 is also provided with a through hole at the upper part and the lower part, and when the pressure valve sealing assembly 306 and the pressure valve sealing seat 308 are opened, high-pressure fluid flows in from the pressure valve sealing seat 308, flows through the pressure valve piston rod 303 and flows out from the pressure valve end cover 302.

Example 1:

as shown in fig. 4 and 5, the shaft-driven valve assembly 2 is a two-way shaft-driven valve assembly, and includes a shaft-driven valve cylinder 201, a shaft-driven valve bushing assembly 202, a shaft-driven valve sealing assembly 203, a shaft-driven valve piston 204, a shaft-driven valve spring 205, a shaft-driven valve piston rod 206, a shaft-driven valve end cap 207, and a solenoid valve 210. The front end and the rear end of a shaft valve cylinder 201 are respectively provided with a shaft valve bushing assembly 202 to form a front shaft valve bushing assembly and a rear shaft valve bushing assembly, the shaft valve bushing assembly 202 is statically and hermetically connected with the shaft valve cylinder 201 through a sealing ring, the front end of the front shaft valve bushing assembly is provided with a shaft valve sealing assembly 203, the rear shaft valve bushing is statically and hermetically connected with a shaft valve end cover 207 through a sealing ring, a shaft valve piston 204, a shaft valve spring 205 and a shaft valve piston rod 206 are arranged in the inner cavity of the shaft valve cylinder 201, the shaft valve piston 204 is sleeved on and fixedly connected with the shaft valve piston rod 206 and is the same as the pressure valve control assembly 3, the shaft valve piston 204 is fixedly connected with the shaft valve piston rod 206 through a thermal installation mode, the shaft valve spring 205 is arranged between the shaft valve bushing 204 and the rear shaft valve bushing assembly, the shaft valve piston rod 206 is movably and hermetically connected with the inner side of the shaft valve bushing assembly 202 through a first shaft valve sealing ring 2021 and a second shaft sealing ring 2022, the shaft-operated valve piston 204 is provided with a dynamic seal ring and is in dynamic seal connection with the inner cavity of the shaft-operated valve cylinder body 201 through the dynamic seal ring, and the shaft-operated valve seal assembly 203 is matched with the shaft-operated valve piston rod 206 to realize the on-off of the shaft-operated valve assembly 2; the solenoid valve 210 is fixedly connected to the shaft-actuated valve cylinder 201 via a shaft-actuated valve adapter plate 209.

The first and second

valve seal rings

2021 and 2022 are used for sealing air and liquid, respectively, and gas and liquid leakage is effectively avoided through two-stage linkage. The axial valve piston 204 divides the axial valve cylinder body 201 into an axial valve left cavity 2011 and an axial valve right cavity 2012 through a movable sealing ring, the principle of on-off is similar to that of the pressure control valve assembly 3, the axial valve assembly 2 is respectively communicated with the axial valve left cavity 2011 and the axial valve right cavity 2012 through the electromagnetic valve 210, and high-pressure gas is controlled to enter the axial valve left cavity and the axial valve right cavity so as to drive the axial valve piston 204 to move left and right, as shown in the figure, when the axial valve piston 204 moves left, the axial valve piston 204 drives the axial valve piston rod 206 to move left and is matched with the axial valve sealing assembly 203 for blocking, when the axial valve piston moves right, the axial valve piston drives the axial valve piston rod to move right, and the axial valve piston rod 206 and the axial valve sealing assembly 203 are separated and opened. The axial valve sealing assembly 203 includes a sealing ring fixed by a bolt, and has a flow hole in the front and rear (left and right), and a flow hole in the front and rear (left and right) of the axial valve piston rod 206, and when the axial valve piston rod 206 moves to the left, the sealing ring of the axial valve sealing assembly 203 blocks the flow hole of the axial valve piston rod 206 to close the axial valve assembly, and when the axial valve piston rod 206 moves to the right, fluid flows in from the flow hole of the axial valve sealing assembly 203, flows through the flow hole of the axial valve piston rod 206, and flows out from the axial valve end cap 207. The opening and closing of the axial valve assembly 2 is controlled by a solenoid valve 210.

At the moment of opening and closing the shaft-actuated valve piston rod 206, the shaft-actuated valve piston rod 206 is easily worn due to the impact of the high-pressure fluid, so that the service life is reduced, in order to correct the eccentricity and vibration of the shaft-actuated valve piston rod 206 caused by the impact of the high-pressure fluid, a support ring 2023 is further arranged on the inner side of the shaft-actuated valve bushing assembly 202, and the support ring 2023 is in dynamic sealing connection with the shaft-actuated valve piston rod 206.

Example 2:

as shown in fig. 2 and 6, the shaft-driven valve assembly 2 is a three-way shaft-driven valve assembly, a shaft-driven valve C opening end cover 211 is arranged between a rear shaft-driven valve bushing assembly at the rear end and a shaft-driven valve end cover 207, an inlet of the shaft-driven valve C opening end cover 211 is in static seal connection with the rear shaft-driven valve bushing assembly through a seal ring, a first outlet of the shaft-driven valve C opening end cover 211 is fixedly connected with the shaft-driven valve end cover 207, a shaft-driven valve seal seat 212 is arranged on the first outlet and the inner side of the shaft-driven valve end cover 207, and the shaft-driven valve seal seat 212 is in static seal connection with the shaft-driven valve C opening end cover 211 and the shaft-driven valve end cover 207 through seal rings respectively; the front and the back of the shaft-driven valve sealing seat 212 are provided with circulation holes, the front end of the circulation hole is communicated with the inlet and the second outlet of the end cover 211 of the shaft-driven valve C, the rear end of the circulation hole is communicated with the end cover 207 of the shaft-driven valve C, the front end of the shaft-driven valve sealing seat 212 is provided with a sealing ring, and the shaft-driven valve piston rod 206 is matched with the shaft-driven valve sealing seat 212 to realize the unloading of the rear end of the shaft-driven valve component 2.

As shown in fig. 5 and 6, for the convenience of installation of the present invention, a shaft valve connecting plate 208 is provided outside the shaft valve end cap 207. And meanwhile, a sealing ring is arranged on the outer side of the front shaft dynamic valve bushing and is in sealing connection with the inner side of the fluid outlet of the valve block 1 through the sealing ring.

The utility model discloses in, the air-vent valve adopts manual air-vent valve or electronic air-vent valve. The method is selected according to actual production requirements, and the application range is widened. When the electric pressure regulating valve is selected, the electric pressure regulating valve can receive analog signals, when the analog signals are received, the pressure regulating valve can give out corresponding air source pressure according to the received analog signals, the pressure control valve component 3 outputs corresponding fluid pressure according to different air source pressures, and the pressure adjustable type quick on-off valve can finish output pressure proportion regulation output and quickly realize the functions of passage and unloading by combining the shaft-driven valve component 2.

The utility model discloses counter shaft valve front end and rear end off-load flow are as follows:

as shown in fig. 1, when the fast on-off valve of the two-way axial-motion valve assembly works, working gas is provided for a load solenoid valve, a pressure regulating valve is adjusted to a proper working pressure, a fluid is input to a fluid inlet connected with a valve port, the solenoid valve is powered on, the two-way axial-motion valve assembly and a pressure control valve assembly work simultaneously, the two-way axial-motion valve assembly controls the on-off of the fluid, the pressure control valve assembly controls the fluid pressure entering the two-way axial-motion valve assembly by shunting the fluid, and the fluid is connected with a working end through an axial-motion valve end cover of the two-way axial-motion valve assembly. When needs switch over, the solenoid valve outage, two lead to axle movable valve subassemblies turn-offs, the working gas of pressure control valve subassembly passes through the trachea simultaneously and discharges through the solenoid valve, pressure control valve subassembly this moment is opened completely, fluid flows back to the initial end through pressure control valve subassembly, with this can effectually carry out the off-load to two lead to axle movable valve subassemblies front end, avoids quick start high-pressure fluid to the loss of two lead to axle movable valve subassemblies, can improve life on the one hand, can improve the life of working pump on the other hand, when in-service use, the utility model discloses a quick on-off valve generally is connected to in the high-pressure fluid, controls the quick break-make of high-pressure fluid, and high-pressure fluid passes through the working pump output, when quick turn-off, if there is not effectual off-load, causes the smolder of working pump easily. Through the pressure valve control assembly, high-pressure fluid can be effectively unloaded, and the working pump is protected.

As shown in fig. 2, when the fast on-off valve of the three-way axial-acting valve assembly works, the on-off and the unloading of the front end of the three-way axial-acting valve assembly are the same as those of the two three-way axial-acting valve assemblies, when the electromagnetic valve is powered off, the pressure control valve assembly unloads, meanwhile, the three-way axial-acting valve assembly unloads the rear end of the three-way axial-acting valve assembly through the end cover of the port C of the axial-acting valve, and high-pressure fluid at the rear end of the three-way axial-acting valve assembly flows back to the initial end through the end cover of the port C of the axial-acting valve, so that the purposes of fast switching the fluid and fast unloading the pressure in a pipeline at the rear end of the valve are achieved.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a quick on-off valve with adjustable pressure which characterized in that: comprises a valve block (1), a shaft-driven valve component (2) and a pressure control valve component (3); the valve block (1) is used for fluid shunting and comprises a fluid inlet and a plurality of fluid outlets, the axial motion valve assembly (2) is hermetically connected with the fluid outlet of the valve block (1) and used for controlling the on-off of the fluid and unloading the rear end of the axial motion valve assembly (2), the axial motion valve assembly (2) adopts a two-way axial motion valve assembly or a three-way axial motion valve assembly, and the pressure control valve assembly (3) is hermetically connected with the other fluid outlet of the valve block (1) and used for unloading the front end of the axial motion valve assembly (2) and regulating the pressure of the fluid flowing into the axial motion valve assembly (2); the axial motion valve assembly (2) comprises an electromagnetic valve, the electromagnetic valve controls high-pressure gas to flow into the inner cavity of the axial motion valve assembly to drive the axial motion valve assembly to be switched on and off, the pressure control valve assembly (3) comprises a pressure regulating valve, the outlet of the electromagnetic valve is also connected with the inlet of the pressure regulating valve through an air pipe, and the outlet of the pressure regulating valve is communicated with the inner cavity of the pressure control valve assembly (3) to control the pressure control valve assembly (3) to be switched on and off.

2. A pressure-adjustable quick on-off valve as claimed in claim 1, characterized in that: the pressure control valve assembly (3) comprises a pressure valve cylinder body (301), a pressure valve end cover (302), a pressure valve piston rod (303), a pressure valve spring (304), a pressure valve piston (305), a pressure valve sealing assembly (306), a pressure valve bushing (307), a pressure valve sealing seat (308) and the pressure regulating valve (310); the pressure valve end cover (302) is arranged at the rear end of the pressure valve cylinder body (301) and is in static sealing connection with the pressure valve cylinder body through a sealing ring, the pressure valve bushing (307) is arranged at the front end of the pressure valve cylinder body (301), and the pressure valve sealing seat (308) is arranged at the front end of the pressure valve bushing (307) and is in static sealing connection with the pressure valve bushing; the pressure valve piston rod (303), the pressure valve spring (304) and the pressure valve piston (305) are arranged in the inner cavity of the pressure valve cylinder body (301), the pressure valve piston (305) is sleeved on the pressure valve piston rod (303) and fixedly connected with the pressure valve piston rod, the pressure valve spring (304) is arranged between the pressure valve piston (305) and the pressure valve end cover (302), the front part of the pressure valve piston rod (303) is in dynamic sealing connection with the inner side of the pressure valve bushing (307) through a second dynamic sealing ring 3061, the rear part of the pressure valve piston rod is in dynamic sealing connection with the inner side of the pressure valve end cover (302) through a first pressure valve sealing ring (3021) and a second pressure valve sealing ring (3022), the pressure valve piston (305) is provided with a first dynamic sealing ring (3051) and is in dynamic sealing connection with the inner cavity of the pressure valve cylinder body (301) through the first dynamic sealing ring (3051), the pressure valve sealing assembly (306) is fixed at the front end of the pressure valve piston rod (303), and the pressure valve sealing assembly (306) is matched with the pressure valve sealing seat (308) to realize the on-off of the pressure control valve assembly (3); the pressure regulating valve (310) is fixedly connected with the pressure valve cylinder body (301) through a pressure valve adapter plate (309).

3. A pressure-adjustable quick on-off valve as claimed in claim 2, characterized in that: and a sealing ring is arranged between the pressure valve bushing (307) and the pressure valve sealing seat (308), and is in sealing connection with the inner side of the fluid outlet of the valve block (1) through the sealing ring.

4. A pressure-adjustable quick on-off valve as claimed in any one of claims 1 to 3, characterized in that: the shaft-driven valve component (2) comprises a shaft-driven valve cylinder body (201), a shaft-driven valve bushing component (202), a shaft-driven valve sealing component (203), a shaft-driven valve piston (204), a shaft-driven valve spring (205), a shaft-driven valve piston rod (206), a shaft-driven valve end cover (207) and the electromagnetic valve (210); the front end and the rear end of a shaft-driven valve cylinder body (201) are respectively provided with a shaft-driven valve bushing assembly (202) which forms a front shaft-driven valve bushing assembly and a rear shaft-driven valve bushing assembly, the shaft-driven valve bushing assembly (202) is in static seal connection with the shaft-driven valve cylinder body (201) through a sealing ring, the front end of the front shaft-driven valve bushing assembly is provided with the shaft-driven valve sealing assembly (203), the rear shaft-driven valve bushing is in static seal connection with a shaft-driven valve end cover (207) through a sealing ring, an inner cavity of the shaft-driven valve cylinder body (201) is provided with a shaft-driven valve piston (204), a shaft-driven valve spring (205) and a shaft-driven valve piston rod (206), the shaft-driven valve piston (204) is sleeved on the shaft-driven valve piston rod (206) and is fixedly connected with the shaft-driven valve piston rod (206), the shaft-driven valve spring (205) is arranged between the shaft-driven valve bushing assembly 204 and the rear shaft-driven valve bushing assembly, and the shaft-driven valve piston rod (206) is in a first shaft sealing ring (2021) and a second sealing ring (2021) (2022) The dynamic seal device is connected with the inner side of a shaft-driven valve bushing assembly (202) in a dynamic seal mode, a dynamic seal ring is mounted on a shaft-driven valve piston (204) and is connected with the inner cavity of a shaft-driven valve cylinder body (201) in a dynamic seal mode through the dynamic seal ring, and the shaft-driven valve seal assembly (203) is matched with a shaft-driven valve piston rod (206) to achieve on-off of the shaft-driven valve assembly (2); the electromagnetic valve (210) is fixedly connected with the shaft-actuated valve cylinder body (201) through a shaft-actuated valve adapter plate (209).

5. The pressure-adjustable quick on-off valve as claimed in claim 4, wherein: the inner side of the shaft-driven valve bushing assembly (202) is further provided with a support ring (2023), and the support ring (2023) is in dynamic sealing connection with the shaft-driven valve piston rod (206).

6. A pressure-adjustable quick on-off valve as claimed in claim 5, characterized in that: a rear shaft moving valve bushing assembly at the rear end of the shaft moving valve assembly (2) is arranged between the rear shaft moving valve bushing assembly and the shaft moving valve end cover (207), an inlet of the shaft moving valve C opening end cover (211) is in static sealing connection with the rear shaft moving valve bushing assembly through a sealing ring, a first outlet of the shaft moving valve C opening end cover (211) is fixedly connected with the shaft moving valve end cover (207), a shaft moving valve sealing seat (212) is arranged on the inner side of the first outlet and the shaft moving valve end cover (207), and the shaft moving valve sealing seat (212) is in static sealing connection with the shaft moving valve C opening end cover (211) and the shaft moving valve end cover (207) through sealing rings respectively; the front and the back of the shaft-driven valve sealing seat (212) are provided with flow holes, the front end of each flow hole is communicated with an inlet and a second outlet of a port end cover (211) of the shaft-driven valve, the rear end of each flow hole is communicated with the shaft-driven valve end cover (207), the front end of the shaft-driven valve sealing seat (212) is provided with a sealing ring, and a piston rod (206) of the shaft-driven valve is matched with the shaft-driven valve sealing seat (212) to realize unloading of the rear end of the shaft-driven valve component (2).

7. A pressure-adjustable quick on-off valve as claimed in any one of claims 5 to 6, characterized in that: and a shaft valve connecting plate (208) is arranged on the outer side of the shaft valve end cover (207).

8. A pressure-adjustable quick on-off valve as claimed in claim 7, characterized in that: and a sealing ring is arranged on the outer side of the front shaft dynamic valve bushing and is in sealing connection with the inner side of the fluid outlet of the valve block (1) through the sealing ring.

9. A pressure-adjustable quick on-off valve as claimed in claim 1, characterized in that: the pressure regulating valve adopts a manual pressure regulating valve or an electric pressure regulating valve.