CN114776833A

CN114776833A - Pneumatic control three-way shuttle valve

Info

Publication number: CN114776833A
Application number: CN202210370444.9A
Authority: CN
Inventors: 胡永根; 刘素峰
Original assignee: Qingdao Jingtian'er Technology Co ltd
Current assignee: Qingdao Jingtian'er Technology Co ltd
Priority date: 2022-04-10
Filing date: 2022-04-10
Publication date: 2022-07-22

Abstract

The pneumatic control three-way shuttle valve provided by the invention is provided with a built-in reversing mechanism, is convenient to operate, compact in structure, low in production cost, simple to maintain, capable of reducing abrasion, reducing reaction time, synchronous in reversing and free of maintenance. A pneumatic three-way shuttle valve which takes compressed air as power and can control the direction of fluid of a switching three-way valve. Comprises three fluid interfaces, two control gas inlets and a fluid reversing mechanism.

Description

Pneumatic control three-way shuttle valve

Technical Field

The invention relates to the field of valves, in particular to a pneumatic control valve.

Background

In the developed modern industry, the automation degree of each industry needs to be improved and perfected. The state vigorously promotes the transformation and the upgrade of enterprises, supports the development of the enterprises and promotes the innovation of the enterprises. The cost is reduced, energy conservation becomes the biggest problem that every enterprise faces at present, and the valve is controlled to automatic pneumatic, and the full automatic control of industry has perfectly been realized. The effective sealing mechanism and the control mechanism of quick response greatly reduce manual operation, reduce manufacturing cost, programmed operation, reduce the maloperation influence that brings because of the human factor. Automated valves are increasingly widely accepted and applied by enterprises.

In the fluid transport industry, one common operating condition is: fluid medium is carried to two lateral conduits by a trunk line is incessant in turn or is carried to a trunk line by two lateral conduits are incessant in turn, in the past practice, adopts two lateral conduits to set up two valves and controls, complex operation, and the action is asynchronous easily, and the mistake of blocking and pausing has the potential safety hazard, causes the wasting of resources.

The pneumatic control three-way valve in the prior art has two types, adopts a ball valve structure and a stop valve structure, and has the common characteristics that: 1. the reversing actuator is arranged outside the valve body, and the external actuator is linked with the internal mechanism of the three-way valve to reverse through the control connecting rod during action, so that the sealing gasket between the actuator and the valve is easily worn and aged due to frequent operation, the valve is leaked, the action is not in place, the use effect is influenced, and the service life of the valve is shortened; 2. the valve body is huge, the installation space is large, the pipeline is complicated, the transmission parts are too many, and the production and maintenance cost is high; 3. in actual use, the fluid resistance is large, and the jamming influences the flow direction and the flow rate of the pipeline medium during action.

At present, there are no similar products at home and abroad, and the prior art greatly restricts the automatic application of the valve industry which is demanded at home and abroad, and can not completely meet the development pace of the modern industry with rapid reaction.

Disclosure of Invention

Aiming at the problems, the invention aims to provide the pneumatic control three-way shuttle valve which is provided with a built-in reversing mechanism, is convenient to operate, compact in structure, low in production cost, simple to maintain, capable of reducing abrasion, reducing reaction time, synchronous in reversing and free of maintenance.

The invention relates to a pneumatic control three-way shuttle valve, which takes compressed air as power to control and convert the fluid direction of a three-way valve, and comprises three fluid interfaces, two control gas inlets and a fluid reversing mechanism.

The three fluidic interfaces are characterized in that: the first interface of the main fluid channel, the second interface and the third interface of the branch fluid channel are respectively connected with the end cover; when the air conditioner works, the first interface is alternately and selectively communicated with the second interface and the third interface independently, and cannot be communicated simultaneously.

The two control gas interfaces comprise a reversing mechanism for communicating control gas to enter.

The fluid reversing mechanism comprises a piston, a shuttle type reverser and a sealing gasket.

The invention relates to a pneumatic control three-way shuttle valve which is characterized in that: the main body structure comprises a left end cover, a three-way valve body cavity, a piston, a positioning bolt, a shuttle type commutator, a right end cover and a sealing gasket in sequence.

The left end cover and the right end cover are characterized in that: comprises a control gas inlet; comprises a medium channel which is axially communicated; the connecting mode of the end face and the three-way valve body is any one of threaded connection, buckle connection, flange connection and butt clamp flange connection; the end face at the other side is connected with a branch pipeline, and the connection form of the end face and the branch pipeline is any form of threaded connection, buckle connection and flange connection; comprises an air inlet, an air inlet channel and a piston fixing seat which are arranged in the radial direction; comprises an end cover provided with a positioning groove and a sealing gasket groove; including 360 deg. rotation of the end cap axially to facilitate adjustment of the control gas inlet orientation.

The three-way valve body cavity is characterized in that: the three connectors are arranged, and the connection form of the middle first connector and the main pipeline is any one of threaded connection, buckle connection and flange connection; the connection form of the second and third interfaces at the left and right ends and the left and right end covers is any form of threaded connection, buckle connection and flange connection; including the positioning bolt holes.

The piston is characterized in that: the left and right independent spaces are formed by a piston rod and a piston, and the piston rod is provided with an air inlet channel; the piston rod is provided with a sealing groove at the left and right fixed seats; a sealing groove is arranged at the position of the piston.

The shuttle commutator is characterized in that: comprises two side end surfaces as sealing surfaces; comprises a sealing groove; comprising an internal cylinder chamber; including axial movement along the piston rod.

The invention relates to a pneumatic control three-way shuttle valve which is characterized in that: the piston is fixed by piston fixing seats of the left end cover and the right end cover; comprises a piston air inlet channel, an end cover control gas inlet and an air inlet channel.

The invention relates to a pneumatic control three-way shuttle valve which is characterized in that: the shuttle type commutator comprises a control gas control commutator moving along the radial direction of a piston, and an O-shaped ring seal is arranged between the shuttle type commutator and the piston rod; comprises a shuttle type commutator and a piston, wherein an O-shaped ring seal is arranged at the position of the shuttle type commutator and the piston.

The invention relates to a pneumatic control three-way shuttle valve which is characterized in that: the left end cover and the right end cover are tightly pressed with the sealing gaskets when being connected with the three-way valve body cavity; when the shuttle type commutator works, the end face of one side of the shuttle type commutator is tightly pressed and sealed with the sealing gasket on one side of the shuttle type commutator, so that the commutation action is achieved.

The invention relates to a pneumatic control three-way shuttle valve which is characterized in that: the three-way valve comprises a main flow channel interface and two branch flow channel interfaces which can be controlled to be opened and closed. The device comprises a main flow channel which is controllable to be communicated with one branch flow channel during operation.

Has the beneficial effects.

The pneumatic control type shuttle type commutator disclosed by the invention has the advantages that the valve is controlled in a pneumatic control mode, the opening is rapid, the adjustment is accurate, the operation is safe, and other accessories such as a proximity switch and the like can be added at the two ends of the shuttle type commutator, so that the remote control of the valve is realized; meanwhile, the invention has small volume and simple and beautiful appearance, the shuttle type commutator is the only movable part, and the control and the sealing are integrated into a whole, so that the service life of the valve is longer; the shuttle type commutator is unique in overall shape, is slightly influenced by medium pressure, is smoother in medium flow state, is higher in switching speed and smaller in pressure loss, and is more suitable for fast and well-developed modern industrial control; meanwhile, the calibers of the three interfaces are completely the same, so that each outlet can keep good flow consistency; the invention can realize the functions of reversing, shunting, converging and conveying and the like of the medium, thereby greatly improving the production efficiency, and simultaneously saving the space and the energy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary of the invention, and that other embodiments can be derived from the drawings provided by those skilled in the art without inventive effort.

FIG. 1 is a schematic view of the main structure of the present invention.

Fig. 2 illustrates a schematic structure of the main body of the present invention.

Fig. 3 is a schematic diagram of the working state of the present invention (left port closed state).

In the figure: the device comprises a left end cover, a right end cover 1, a piston 2, a positioning bolt 3, a shuttle type commutator 4, a three-way valve body 5 and a sealing gasket 6; the piston comprises a positioning groove 11, a sealing groove 12, a second interface 13, a piston seat 14, a vent hole 15, a first control gas inlet 16, a third interface 17, a second control gas inlet 18, a vent hole 21, a sealing groove 22, an O-ring 23, a piston rod 24, a vent hole 25, a piston housing 26, an O-ring 27, a sealing groove 28, a sealing groove 41, an O-ring 42, a shuttle sealing cylinder body 43, a positioning pin 44, a connecting thread 45, a sealing gasket 46, a shuttle sealing cylinder end cover 47, a first control chamber 48, a second control chamber 49, a second interface channel 51, a third interface channel 52, a positioning bolt hole 53 and a first interface 54.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 and 2: a pneumatic control three-way shuttle valve comprises a left end cover 1 and a right end cover 1 which are respectively arranged at the ends of a second interface channel 51 and a third interface channel 52 of a three-way valve body 5, a sealing gasket 6 is pressed between the two ends, and the two ends are fixed and positioned by a positioning bolt; the two ends of the piston 2 are respectively clamped in the piston seats 14 of the left end cover 1 and the right end cover 1, the two ends are sealed by the O-shaped rings 23 embedded in the sealing grooves 22, and at the moment, the

control gas inlets

16 and 18 are communicated with the vent holes 15, the vent holes 21 and the vent holes 25; the shuttle commutator 4 is mounted on the piston rod 24 and divided into two independent chambers by the O-ring 27 mounted in the sealing groove 28 of the piston pocket 26, and the space between the shuttle commutator 4 and the piston rod 24 is sealed by the O-ring 42 mounted in the sealing groove 41; the shuttle type commutator 4 is a closed space formed by a shuttle type sealing cylinder body 43, a positioning pin 44, a connecting thread 45, a sealing gasket 46, a shuttle type sealing cylinder end cover 47 and the like, and the shuttle type commutator 4 can freely slide left and right along the piston rod 24.

As shown in fig. 2: the invention relates to a pneumatic control three-way shuttle valve, which comprises five detachable structures which are fixed and not detached frequently, is beneficial to assembly in the processing and manufacturing process, and can be detached for maintenance and repair under necessary conditions in the later maintenance process.

As shown in fig. 3, in the state that the left port is closed, the control gas is communicated with the vent hole 21 and the vent hole 25 through the gas inlet 16 and the vent hole 15 and enters the first control chamber 48, the shuttle-type commutator 4 is forced to slide to the left end, the sealing gasket 6 is pressed, the second interface 13 is closed, the first interface 54 and the third interface 17 are opened, and the fluid medium can be conveyed in the opened channel at will.

In order to better realize the diversion effect and reduce the medium resistance of the valve, the front end of the shuttle type reverser is provided with a conical body and an inwards concave blade fan or a spiral flow passage, which is not limited herein.

The above is that: the present invention has been described in an illustrative manner, but is not limited to the above-described embodiments, and any modification or variation based on the present invention is within the scope of the claims.

Claims

1. A pneumatic control three-way shuttle valve is characterized in that: the main body structure sequentially comprises a left end cover, a three-way valve body cavity, a piston, a positioning bolt, a shuttle type commutator, a right end cover and a sealing gasket;

the left end cover and the right end cover are characterized in that: comprises a control gas inlet; comprises a medium channel which is axially communicated; the connecting mode of the end face and the three-way valve body is any one of threaded connection, buckle connection, flange connection and butt clamp flange connection; the other side end face is connected with the branch pipeline, and the connection form of the end face and the branch pipeline is any one of threaded connection, buckle connection and flange connection; comprises an air inlet, an air inlet channel and a piston fixing seat which are arranged in the radial direction; comprises an end cover provided with a positioning groove and a sealing gasket groove; the end cover can axially rotate for 360 degrees so as to conveniently adjust and control the gas inlet direction;

the three-way valve body cavity is characterized in that: the three connectors are arranged, and the connection form of the middle first connector and the main pipeline is any one of threaded connection, buckle connection and flange connection; the connection form of the second and third interfaces at the left and right ends and the left and right end covers is any one of threaded connection, buckle connection and flange connection; comprises a positioning bolt hole;

the piston is characterized in that: the left and right independent spaces are formed by a piston rod and a piston, and the piston rod is provided with an air inlet channel; the piston rod is provided with a sealing groove at the left and right fixed seats; comprises a sealing groove arranged at the position of a piston;

the shuttle type commutator is characterized in that: comprises two outer end faces as sealing faces; comprises a sealing groove; comprises an inner cylinder cavity; comprises extending the axial movement of the piston rod; including controllable axial movement of the extension rod.

2. A pneumatic control three-way shuttle valve is characterized in that: the three-way valve comprises three fluid interfaces, two control gas inlets and a fluid reversing mechanism.

3. A pneumatic control three-way shuttle valve is characterized in that: the three-way valve comprises a main flow interface and two branch flow interfaces which can be controlled to be opened and closed.

4. Comprises a main flow-through interface which is controllable to be communicated with one of the branch flow-through interfaces during operation.

5. The pneumatic control three-way shuttle valve according to claim 1, characterized in that: the piston is fixed by piston fixing seats of the left end cover and the right end cover; comprises a piston air inlet channel, an end cover control gas inlet and an air inlet channel.

6. The pneumatic three-way shuttle valve according to claim 1, wherein: the shuttle type commutator comprises a control gas control commutator, a piston rod and a sealing ring, wherein the control gas control commutator moves along the axial direction of the piston; the shuttle type commutator is sealed by a sealing ring arranged at the position of the piston.

7. The pneumatic three-way shuttle valve according to claim 1, wherein: the left end cover and the right end cover are tightly pressed with the sealing gaskets when being connected with the three-way valve body cavity; when the shuttle type commutator works, the end face of one side of the shuttle type commutator is tightly pressed and sealed with the sealing gasket on one side of the shuttle type commutator, so that the commutation action is achieved.