CN222297040U

CN222297040U - Three-way valve and linkage three-way valve

Info

Publication number: CN222297040U
Application number: CN202420359419.5U
Authority: CN
Inventors: 郑军; 赵延平; 郑丽萍
Original assignee: Jingke Electromechanical Equipment Tianjin Co ltd
Current assignee: Jingke Electromechanical Equipment Tianjin Co ltd
Priority date: 2024-02-27
Filing date: 2024-02-27
Publication date: 2025-01-03
Anticipated expiration: 2034-02-27

Abstract

A three-way valve belongs to the field of valve technology, including a valve body, a valve core, a valve cover, a driving structure and a sealing component; the valve core is arranged in the valve body, the valve cover is connected to the valve body, and the valve core is limited, the valve core is rotatably fixed in the hollow cavity of the valve body, the driving structure passes through the valve cover and is connected to the valve core to drive the valve core to rotate, and realizes the opening and closing control of each inlet and outlet of the valve body; a sealing structure is arranged between the valve body and the valve core, between the valve body and the valve cover, and between the valve cover and the driving structure; the valve core has a cylinder body, the cylinder body is cylindrical, and the size is adapted to the size of the inner cavity of the valve body; end disks are arranged at both ends of the cylinder body to form a cylindrical cavity structure; a valve handle groove is arranged on one of the two end disks, and the valve handle groove is used to connect with the driving structure. The valve of the utility model is light in weight, low in cost, easy to maintain, and has good sealing performance.

Description

Three-way valve and linkage three-way valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a three-way valve and a linkage three-way valve.

Background

Valves are a general group of mechanical products with movable mechanisms for controlling the medium in a pipe. The valves are classified according to structure, including gate valves, ball valves, butterfly valves, diaphragm valves, etc. The valve comprises a valve body and a valve core, wherein the valve body is provided with an inner cavity, the valve core is arranged in the inner cavity of the valve body, and the valve is used under different flow rates by moving or rotating the valve core.

The existing valve body has casting, forging, welding and other processes, each process has limitations, and the development of new materials is widely applied and expands our ideas.

As the pipe diameter of the pipeline is mostly national standard pipe diameter in daily use, the pipeline is connected with the valve by flange connection, the valve body and the valve core of the valve are processed, and then the cast workpiece is processed, the processing technology is complex, and the cost is high and the raw materials are wasted.

Especially, most of valve cores adopt structures such as spherical valve cores, wedge-shaped flashboard, stop valve clack, conical cock and the like, and are designed physically, so that the weight is heavy, and maintenance personnel are very laborious and time-consuming in assembly and maintenance. All valve maintenance must be done by high levels of personnel or directly returned to the valve manufacturer for repair.

For the above reasons, through investigation in actual use situations of a large number of factories, the demands for weight and maintenance convenience of the valve and tightness of the valve body are found to be very strong.

Disclosure of Invention

The utility model aims to provide a three-way valve and a linkage three-way valve, which are used for solving the technical problems of simple and direct maintenance in later period, overweight valve, material waste, complex processing process and high cost.

In order to achieve the above purpose, the specific technical scheme of the three-way valve and the linkage three-way valve of the utility model is as follows:

a three-way valve comprises a valve body, a valve core, a valve cover, a driving structure and a sealing assembly;

The valve core is arranged in the valve body, the valve cover is connected with the valve body and limits the valve core, the valve core is rotatably fixed in the hollow cavity of the valve body, and the driving structure penetrates through the valve cover to be connected with the valve core to drive the valve core to rotate, so that the opening and closing control of each inlet and outlet of the valve body is realized;

A sealing structure is arranged between the valve body and the valve core, between the valve body and the valve cover and between the valve cover and the driving structure;

The valve core is provided with a cylindrical body, and the size of the cylindrical body is matched with the size of the inner cavity of the valve body main body;

end plates are arranged at both ends of the cylinder body to form a cylindrical cavity structure;

A valve handle groove is arranged on one of the two end plates, and the valve handle groove is used for being connected with a driving structure.

Further, a space is reserved between the end disc and the edge of the cylinder body, and an annular structure formed by the cylinder body outside the end disc is a rotating ring.

Furthermore, two channel holes are formed in the side wall of the cylinder body, and the two channel holes are arranged in an L shape;

The interior of the valve core can pass through the medium.

Furthermore, the side wall of the cylinder body with the symmetrical two channel holes is provided with a sealing groove, and the diameter of the sealing groove is larger than the diameters of three pipeline connectors of the valve body;

A guide plate is arranged between the two channel holes in the valve core, the guide plate is L-shaped as a whole, two sides of the guide plate are connected with the channel holes, and the L-shaped bending surface is far away from the two channel holes;

The L-shaped guide plate plays a role in guiding the medium passing through the valve core, so that the medium is prevented from generating turbulence in the valve core, and the resistance of the medium passing through the valve is reduced;

The guide plate and the valve core form a passage for medium to pass through;

the channel is arc-shaped, and the medium flow parameters are the same as those of the elbow with the same size.

Further, a guide plate is arranged between the two channel holes in the valve core, the guide plate is L-shaped as a whole, two sides of the guide plate are connected with the channel holes, and the L-shaped bending surface is far away from the two channel holes.

The valve body is provided with a main body which is of a cylindrical hollow structure with an opening at one side, an assembling port is arranged at the opening end, a screw hole is arranged on the assembling port, and an annular groove is arranged at the inner side of the joint of the assembling port and the main body;

Three pipeline connectors are arranged on the cylindrical side wall of the main body, and are a first port, a second port and a third port respectively, and the three pipeline connectors are in T-shaped flat arrangement.

Further, the pipeline connecting port is provided with a flange plate which is used for being connected with the flange plate of the pipeline, the flange plate is provided with a connecting hole,

The flange is provided with grooves or holes for mounting the sealing members.

Further, the valve cover is provided with a base disc, the base disc is disc-shaped, and a through hole is formed in the center of the base disc;

A sealing column is arranged at the position of the central through hole of the base plate, the sealing column is of a hollow structure, and the central through hole of the sealing column is communicated with the central through hole of the base plate;

The outer ring of the base plate at one side of the sealing column is provided with a bead ring which is an annular round platform protruding out of the base plate;

the circular edge of the base plate is provided with a connecting hole corresponding to the screw hole arranged on the valve body assembly port;

An outer sealing groove is formed in the position of the central through hole of the base plate on the back side of the sealing column, and an inner sealing groove is formed in the inner side of one end, far away from the base plate, of the sealing column.

Furthermore, a damping device is arranged between the rotating ring of the valve core and the valve body and between the rotating ring of the valve core and the bead ring of the valve cover, the damping device is a group of steel balls, the steel balls are arranged in bead grooves arranged on bead pads, and the diameters of the bead pads are consistent with those of the rotating ring and the bead ring.

Further, the driving structure is a valve rod, and the valve rod comprises a cylindrical rod body and an end head arranged on one side of the rod body, wherein the end head is cylindrical and has a diameter larger than that of the rod body;

a thread is arranged on one side of the rod body far away from the end head, a driven surface is arranged on the rod body provided with the thread,

A driving surface is arranged on the side surface of the top of the end head, so that the end head can be inserted into the valve handle groove;

Two sealing mechanisms, namely a first groove and a second groove, are arranged at the position of the rod body close to the end head, and sealing rings are arranged in the two sealing mechanisms and used for sealing between the rod body and the valve cover.

Further, the sealing component comprises a sealing gasket, a sealing ring, a disc spring, a lock nut and a cover sealing ring;

the cover seal ring is arranged in the ring groove of the valve body, the valve cover is connected with the valve body through an end cover bolt, the cover seal ring is pressed tightly, and the valve body and the valve cover form a seal;

the sealing rings are arranged in the first groove and the second groove of the rod body and are sealed with the sealing column of the valve cover;

The sealing gasket is arranged in the outer sealing groove of the valve cover, the sealing gasket is externally pressed with a disc spring sleeved on the valve rod, the disc spring is connected with two locking nuts, and the locking nuts sleeved on the threads of the valve rod are two.

Furthermore, a positioning block is arranged between the two lock nuts, the position of the positioning block is limited by a limiting block and a limiting bolt, the limiting block is arranged between the positioning block and the valve cover, and the limiting bolt connects the positioning block with the limiting block.

Further, a handle is connected to the valve, a rotary sleeve is arranged at one end of the handle and sleeved on the valve rod, and the valve rod is driven to rotate through a driven surface.

The utility model also provides a linkage three-way valve adopting the three-way valve, which comprises an upper three-way valve, a lower three-way valve and a connecting piece;

the upper three-way valve and the lower three-way valve are three-way valves in any one of the technical schemes;

the connecting piece is a rotary sleeve, the rotary sleeve is provided with openings at two ends, and each opening is connected with a valve rod of a three-way valve.

Further, the driving device is a handle or a worm and gear manual device or a linkage speed reducer device.

Further, a supporting frame is arranged on the valve and is connected with the fixing hole through a bolt;

The support frame is used for connecting the driving device so that the driving device stably operates and is not easy to shake or shake.

The three-way valve and the linkage three-way valve have the following advantages:

1. The sealing ring of the valve core of the three-way valve is a key component for solving internal leakage, is convenient to replace, and can be replaced by a bench worker master only needing general operation, so that the maintenance cost is greatly reduced.

2. The valve core has better sealing performance by adopting a sealing structure with the side wall compared with the structure of sealing the valve core and the outlet adopted at present.

3. The operation is convenient, the driving part is a valve rod, and the valve is controlled to be opened and closed through the connection of the valve rod and the valve core.

4. The three-way valve and the linkage three-way valve thereof can completely replace ball valves, can be used for semi-open throttle, are widely applied to industries such as petroleum, chemical engineering, construction, water supply, drainage and the like, and have wide market prospect.

5. The valve adopts a high-efficiency sealing design, reduces the leakage phenomenon of the valve, reduces the energy consumption, is beneficial to environmental protection and energy conservation, and obviously reduces the power consumption in installation and use due to the great reduction of the valve core.

6. The valve has high cost performance, and the valve adopts a modularized design, so that the maintenance and the replacement of parts are convenient, the maintenance cost of the valve is reduced, and the processing cost and the material cost of the valve core are greatly reduced. The weight of the valve core is reduced by 50%, and the cost is greatly reduced.

Drawings

FIG. 1 is a schematic diagram of a three-way valve in linkage according to one embodiment;

FIG. 2 is a side view of a ganged three-way valve of an embodiment;

FIG. 3 is a schematic view of the cross-sectional A-A configuration of FIG. 2 according to one embodiment;

FIG. 4 is a front view of a ganged three-way valve according to one embodiment

FIG. 5 is a schematic diagram of a cross-sectional B-B structure of FIG. 4 according to one embodiment;

FIG. 6 is a schematic view of the structure of a valve body according to one embodiment;

FIG. 7 is a schematic elevational view of the valve body of one embodiment;

FIG. 8 is a schematic side view of the valve body of one embodiment;

FIG. 9 is a B-B cross-sectional view of FIG. 7, according to one embodiment;

FIG. 10 is a C-C cross-sectional view of FIG. 8, according to one embodiment;

FIG. 11 is a front view of a valve cover of one embodiment;

FIG. 12 is a cross-sectional view A-A of FIG. 11 of one embodiment;

FIG. 13 is a right side view of the valve cover of one embodiment;

FIG. 14 is a left side view of a valve cover of one embodiment;

FIG. 15 is a schematic view of the structure of a valve cartridge according to one embodiment;

FIG. 16 is a top view of a valve cartridge of one embodiment;

FIG. 17 is a front view of a valve cartridge of one embodiment;

FIG. 18 is a cross-sectional view A-A of FIG. 17 of one embodiment;

FIG. 19 is a top view and a front view of a bead cushion of one embodiment;

FIG. 20 is a schematic illustration of the structure of a valve stem of an embodiment;

FIG. 21 is a front view of a valve stem of an embodiment;

FIG. 22 is a cross-sectional view A-A of FIG. 21 of one embodiment;

FIG. 23 is a top view of a valve stem of an embodiment;

FIG. 24 is a B-B cross-sectional view of FIG. 21, according to one embodiment;

the figure indicates:

1. 1-1 parts of valve body, 1-2 parts of main body, 1-3 parts of first port, 1-3 parts of second port, 1-4 parts of third port, 1-5 parts of assembly port, 1-6 parts of screw hole, 1-7 parts of ring groove,

2. 2-1 Parts of valve core, 2-2 parts of cylinder, 2-3 parts of end disk, valve handle groove, 2-4 parts of channel hole, 2-5 parts of sealing groove, 2-6 parts of rotating ring, 2-7 parts of sealing ring, 2-8 parts of guide plate,

3. Valve cover, 3-1, base plate, 3-2, bead ring, 3-3, sealing column, 3-4, outer sealing groove, 3-5, inner sealing groove, 3-6, connecting hole,

4. Valve rod, 4-1, rod body, 4-2, end, 4-3, driving surface, 4-4, screw thread, 4-5, driven surface, 4-6, first groove, 4-7, second groove,

5. 6 Sealing gaskets, 7 sealing rings, 7 disc springs, 8 limiting blocks, 9, positioning blocks, 10, limiting bolts, 11 and handles, 11-1, a rotary sleeve, 12, a lock nut, 13, a cover seal ring, 14, a bead pad, 14-1, a bead groove, 15, a steel ball, 17 and an end cover bolt.

Detailed Description

For a better understanding of the objects, structures and functions of the present utility model, a three-way valve and a linkage three-way valve according to the present utility model will be described in further detail with reference to the accompanying drawings.

The common linkage three-way valve is usually driven by two three-way valves through a linkage device to realize the opening and closing control and channel control of the two three-way valves.

As the pipe diameter of the pipeline is mostly national standard pipe diameter in daily use, the connection between the pipeline and the valve is usually flange connection, the valve body and the valve core of the valve adopt casting technology, and then the cast workpiece is processed, the processing technology is complex, and the cost is high and raw materials are wasted.

In particular, most of valve cores adopt spherical valve cores, the physical design is heavy, and maintenance personnel are very laborious and time-consuming in assembly and maintenance.

For the above reasons, through investigation in actual use situations of a large number of manufacturers, the requirements on the weight and maintenance convenience of the valve and the tightness of the valve body are very strong, so the utility model provides an improved valve structure.

The structure and connection relationship of a three-way valve will now be described in detail.

As shown in fig. 1 to 5, the overall structure of the three-way valve unit and the linkage three-way valve is shown, and the connection relationship between the constituent parts of the three-way valve is also shown.

A three-way valve comprises a valve body 1, a valve core 2, a valve cover 3, a driving structure and a sealing assembly;

The valve core 2 is arranged in the valve body 1, the valve cover 3 is connected with the valve body 1 and limits the valve core 2, the valve core 2 is rotatably fixed in a hollow cavity of the valve body 1, and the driving structure penetrates through the valve cover 3 and is connected with the valve core 2 to drive the valve core 2 to rotate so as to realize the opening and closing control of each inlet and outlet of the valve body 1;

And sealing components are arranged between the valve body 1 and the valve core 2, between the valve body 1 and the valve cover 3 and between the valve cover 3 and the driving structure.

As shown in fig. 6 to 10, the structure of the valve body 1 and the structure of the respective constituent parts are shown.

The valve body 1 is provided with a main body 1-1, the main body 1-1 is of a cylindrical hollow structure with an opening at one side, an assembly port 1-5 is arranged at the opening end, a screw hole 1-6 is arranged on the assembly port 1-5, and a ring groove 1-7 is arranged at the inner side of the joint of the assembly port 1-5 and the main body 1-1.

Three pipeline connectors are arranged on the cylindrical side wall of the main body 1-1, namely a first port 1-2, a second port 1-3 and a third port 1-4, and are distributed in a T-shaped and flat mode.

The pipeline connecting port can be provided with a flange plate which is used for being connected with the flange plate of the pipeline, and the flange plate is provided with connecting holes 3-6 which are convenient for fastening operation.

The flange may also be provided with grooves or holes for mounting the sealing members.

Fig. 11 to 14 show the detailed structure of the valve cover 3.

The valve cover 3 is provided with a base plate 3-1, the base plate 3-1 is disc-shaped, and a through hole is formed in the center;

The central through hole of the base plate 3-1 is provided with a sealing column 3-3, the sealing column 3-3 is of a hollow structure, and the central through hole of the sealing column is communicated with the central through hole of the base plate 3-1.

The outer ring of the base plate 3-1 at one side of the sealing column 3-3 is provided with a bead ring 3-2, the bead ring 3-2 is an annular round platform protruding out of the base plate 3-1, and the round edge of the base plate 3-1 is provided with a connecting hole 3-6 corresponding to the screw hole 1-6 arranged on the assembling port 1-5 of the valve body 1.

An outer sealing groove 3-4 is arranged at the position of a central through hole of the base plate 3-1 at the back side of the sealing column 3-3, and an inner sealing groove 3-5 is arranged at the inner side of one end of the sealing column 3-3, which is far away from the base plate 3-1.

Fig. 15-18 show the design of the inventive valve cartridge 2 and show the individual components in detail.

The valve core 2 is provided with a cylinder body 2-1, and the cylinder body 2-1 is cylindrical and is matched with the inner cavity of the main body 1-1 of the valve body 1 in size.

End plates 2-2 are arranged at two ends of the cylinder body 2-1 to form a cylindrical cavity structure.

The end disc 2-2 and the edge of the cylinder 2-1 are spaced, and the annular structure formed by the cylinder 2-1 outside the end disc 2-2 is a rotary ring 2-6;

two channel holes 2-4 are formed in the side wall of the cylinder body 2-1, and the two channel holes 2-4 are arranged in an L shape.

The interior of the valve core 2 may be passed through a medium.

A sealing groove 2-5 is arranged on the side wall of the cylinder body 2-1 symmetrical to the two passage holes 2-4, the diameter of the sealing groove 2-5 is larger than the diameters of three pipeline connectors of the valve body 1, and a sealing ring 2-7 is arranged in the sealing groove 2-5.

A valve stem groove 2-3 is provided on one of the end plates 2-2 of the two end plates 2-2 for connection with a driving structure.

As shown in fig. 18, a further improved structure of the valve spool 2 is shown.

Inside the valve core 2, a guide plate 2-8 is arranged between the two channel holes 2-4, the guide plate 2-8 is L-shaped as a whole, two sides of the guide plate are connected with the channel holes 2-4, and the L-shaped bending surface is far away from the two channel holes 2-4.

The L-shaped guide plates 2-8 play a role in guiding the medium passing through the valve core 2, so that the medium is prevented from generating turbulence in the valve core 2, and the resistance of the medium passing through the valve is reduced.

The channels are formed in an arc shape, and the medium flow parameters approximate to bends with the same size.

Fig. 20 to 24 show a specific structure of the valve stem 4.

The driving structure is a valve rod 4, the valve rod 4 comprises a cylindrical rod body 4-1 and an end head 4-2 arranged on one side of the rod body 4-1, the end head 4-2 is of a cylindrical diameter larger than that of the rod body 4-1, and the end head 4-2 is horizontally arranged in an inner sealing groove 3-5 of a sealing column 3-3 of a valve cover 3 during installation.

One side of the rod body 4-1 far away from the end head 4-2 is provided with a thread 4-4, the rod body 4-1 provided with the thread 4-4 is provided with a driven surface 4-5, the top side surface of the end head 4-2 is provided with a driving surface 4-3, and the end head 4-2 can be inserted into the valve handle groove 2-3.

Two sealing mechanisms, namely a first groove 4-6 and a second groove 4-7, are arranged at the position of the rod body 4-1 close to the end head 4-2, and a sealing ring 6 can be arranged in the two sealing mechanisms for sealing the rod body 4-1 and the valve cover 3.

Figures 1-5 illustrate the connection of the seal assembly of an assembled three-way valve to the valve components.

The sealing assembly comprises a sealing gasket 5, a sealing ring 6, a disc spring 7, a lock nut 12 and a cover sealing ring 13;

The cover seal ring 13 is arranged in the ring grooves 1-7 of the valve body 1, the valve cover 3 is connected with the valve body 1 through the end cover bolts 17, the cover seal ring 13 is pressed tightly, and the valve body 1 and the valve cover 3 form a seal.

The sealing ring 6 is arranged in the first groove 4-6 and the second groove 4-7 of the rod body 4-1 to form sealing with the sealing column 3-3 of the valve cover 3.

The sealing gasket 5 is arranged in the outer sealing groove 3-4 of the valve cover 3, the sealing gasket 5 is externally pressed with a disc spring 7 sleeved on the valve rod 4, and the disc spring 7 is connected with a lock nut 12. The number of the lock nuts 12 sleeved on the threads 4-4 of the valve rod 4 is two, and the two lock nuts 12 can play a role in fixing positions by mutually tightening.

In order to further stabilize the pressing force of the control disc spring 7, a positioning block 9 is arranged between the two locking nuts 12, and the position of the positioning block 9 is defined by a limiting block 8 and a limiting bolt 10. The limiting block 8 is arranged between the positioning block 9 and the valve cover 3, and in order to prevent the limiting block 8 from being separated in the using process, the positioning block 9 and the limiting block 8 are connected by adopting a limiting bolt 10.

For the convenience of valve control, a handle 11 is connected to the valve, one end of the handle 11 is provided with a rotary sleeve 11-1, the rotary sleeve 11-1 is sleeved on the valve rod 4, and the valve rod 4 is driven to rotate through a driven surface 4-5.

In order to further reduce the difficulty of operating the valve, a damping device is arranged between the rotating ring 2-6 of the valve core 2 and the valve body 1 and between the rotating ring 2-6 of the valve core 2 and the ball ring 3-2 of the valve cover 3, the damping device is a group of steel balls 15, the steel balls 15 are arranged in ball grooves 14-1 arranged on the ball pads 14, and the diameter of the ball pads 14 is consistent with the diameters of the rotating ring 2-6 and the ball ring 3-2.

The valve body 1, the cylinder body 2-1 and the valve cover 3 can be made of WCB cast steel, or stainless steel plates or stainless steel pipes.

The utility model also provides a design scheme of the linkage three-way valve manufactured by adopting the three-way valve, the linkage three-way valve is composed of two three-way valves, the three-way valves are placed up and down, and a control part handle 11 of the valve is arranged in the center. With the rotation of the handle 11, the valve rod 4 is driven, and the valve rod 4 drives the valve core 2 to rotate.

Three pipeline connectors are designed on each three-way valve body 1, and the three-way valve is realized by changing the liquid flow direction through the rotation of the three-way valve core 2.

Fig. 1-5 show the construction of a ganged tee.

A linkage tee joint comprises an upper tee valve 100, a lower tee valve 200 and a connecting piece,

The upper and lower three-way valves 100 and 200, using the three-way valves described above,

The connecting piece is a rotary sleeve 11-1 arranged at the front end of a handle 11, the rotary sleeve 11-1 is provided with two open ends, each opening is connected with a valve rod 4 of a three-way valve,

Of course, a mode that the valve rod 4 of each valve is connected with one connecting sleeve firstly and then connected with the rotary sleeve 11-1 can also be adopted.

The handle 11 for driving can be replaced by a worm gear manual device (the inlet and outlet of the upper valve are in the same direction) or a linkage speed reducer device (the inlet and outlet of the upper valve are in opposite directions).

A supporting frame can also be arranged on the valve and is connected with the valve cover 3 through bolts.

The support frame is used for connecting drive arrangement to make drive arrangement steady operation be difficult for appearing shaking or rocking, reduce the wearing and tearing of valve rod 4, case 2 and valve gap 3, also can reduce seal structure's extra wearing and tearing, improve the life of valve.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. A three-way valve is characterized by comprising a valve body, a valve core, a valve cover, a driving structure and a sealing assembly;

a sealing component is arranged between the valve body and the valve core, between the valve body and the valve cover and between the valve cover and the driving structure;

2. The three-way valve according to claim 1, wherein,

The end disk and the edge of the cylinder body are spaced, and the annular structure formed by the cylinder body outside the end disk is a rotating ring.

3. A three-way valve according to claim 2, wherein,

Two channel holes are formed in the side wall of the cylinder body, and the two channel holes are arranged in an L shape;

The interior of the valve core can pass through the medium.

4. The three-way valve according to claim 3, wherein,

The side wall of the cylinder body with the symmetrical two channel holes is provided with a sealing groove, and the diameter of the sealing groove is larger than the diameters of three pipeline connectors of the valve body;

The guide plate and the valve core form a passage for medium to pass through;

5. The three-way valve according to claim 3, wherein,

The valve body is provided with a main body which is of a cylindrical hollow structure with an opening at one side, an assembly port is arranged at the opening end, a screw hole is arranged on the assembly port, and an annular groove is arranged at the inner side of the joint of the assembly port and the main body;

6. The three-way valve according to claim 5, wherein,

The pipeline connecting port is provided with a flange plate which is used for being connected with the flange plate of the pipeline, the flange plate is provided with a connecting hole,

The flange is provided with grooves or holes for mounting the sealing members.

7. The three-way valve according to claim 6, wherein,

The valve cover is provided with a base disc which is disc-shaped and is provided with a through hole in the center;

8. The three-way valve according to claim 7, wherein,

The damping device is a group of steel balls which are arranged in bead grooves arranged on bead gaskets, and the diameters of the bead gaskets are consistent with those of the rotating ring and the bead ring.

9. The three-way valve according to claim 8, wherein,

The driving structure is a valve rod, and the valve rod comprises a cylindrical rod body and an end head arranged at one side of the rod body, wherein the end head is cylindrical and has a diameter larger than that of the rod body;

10. The three-way valve according to claim 9, wherein,

The sealing assembly comprises a sealing gasket, a sealing ring, a disc spring, a lock nut and a cover sealing ring;

11. The three-way valve according to claim 10, wherein,

A positioning block is arranged between the two lock nuts, the position of the positioning block is limited by a limiting block and a limiting bolt, the limiting block is arranged between the positioning block and the valve cover, and the limiting bolt connects the positioning block with the limiting block.

12. The three-way valve according to claim 11, wherein,

The valve is connected with a handle, one end of the handle is provided with a rotary sleeve, the rotary sleeve is sleeved on the valve rod, and the valve rod is driven to rotate through the driven surface.

13. A linked three-way valve employing the three-way valve according to any one of claims 1 to 12, comprising an upper three-way valve, a lower three-way valve and a connecting member;

The upper three-way valve and the lower three-way valve are three-way valves according to any one of claims 1 to 12;

14. A linked three-way valve according to claim 13, wherein the drive means is a handle or worm gear manual means or a linked reducer means.

15. The ganged three-way valve of claim 14, wherein the valve is a valve,

The valve is provided with a supporting frame which is connected with the fixing hole through a bolt;