Pressure regulating compensation sealed three-way rotary valve

Abstract

The present invention relates to the technical field of rotary valves, and discloses a pressure regulating and compensating sealed three-way rotary valve, comprising a connecting pipe, a top sealing seat is arranged at the top of the connecting pipe, a sealing bolt is arranged between the connecting pipe and the top sealing seat, a sphere is fixedly assembled at the bottom of the connecting pipe, three sets of connecting flanges are arranged in a "T" shape on the outer wall of the sphere, and a mounting groove is opened in the middle of the top sealing seat. When the pressure in the inner cavity of the pressure regulating component is used to push the first seal and the second seal to slide in the inner wall of the first slide groove and the second slide groove, the fitting force between the inner wall of the pressure regulating component and the sphere is increased, thereby realizing pressure regulation; when adjusting the pressure compensation, by rotating the inlet end of the transmission pipe to the notch, the pressure in the inner cavity of the connecting pipe is greater than the pressure in the inner cavity of the pressure regulating component, so that the pressure in the inner cavity of the pressure regulating component is increased, thereby increasing the pressure in the inner cavity of the pressure regulating component and pushing the force of the first seal and the second seal.

Description

Technical Field

[0001] The invention relates to the technical field of rotary valves, in particular to a pressure-regulating compensating sealed three-way rotary valve. Background Art

[0002] The three-way rotary valve is a valve that can change the flow direction of the fluid. The three-way rotary valve is a rotary valve in the shape of a closing piece or a plunger. By rotating 90°, the channel opening on the valve plug is the same as or separated from the channel opening on the valve body, so as to realize opening or closing. The valve plug of the rotary valve can be cylindrical or conical. In the cylindrical valve plug, the channel is generally rectangular; in the conical valve plug, the channel is trapezoidal. These shapes make the structure of the rotary valve light, but at the same time they also produce certain losses. The rotary valve is most suitable for cutting off and connecting the medium and for diversion, but it can sometimes be used for throttling according to the applicable properties and the erosion resistance of the sealing surface. Since the movement between the sealing surfaces of the rotary valve has a wiping effect, and when fully open, it can completely prevent contact with the flowing medium, so it can usually be used for media with suspended particles. Another important feature of the rotary valve is that it is easy to adapt to the multi-channel structure, so that one valve can obtain two, three, or even four different flow channels. This can simplify the design of the pipeline system, reduce the number of valves and some connecting accessories required in the equipment.

[0003] The sealing structure of the current three-way rotary valve is that the shaft rotates to drive the rotor to make a 90° partial rotation to change the flow direction of the fluid and the seal between the rotor and the valve body. The disadvantage of this structural type is that the sealing performance of the sealing surface between the rotor and the valve body can meet the technical requirements when the manufacturer leaves the factory, but with the increase of use time and number of uses, the wear of the sealing surface is inevitable, so it is easy to cause leakage of the three-way rotary valve, which directly affects the sealing performance and service life of the valve. For this reason, a pressure-regulating compensating sealing three-way rotary valve is proposed. Summary of the invention

[0004] The present invention provides a pressure regulating compensating sealed three-way rotary valve, which solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a pressure regulating and compensating sealed three-way rotary valve, comprising a connecting pipe, a top sealing seat is arranged at the top of the connecting pipe, a sealing bolt is arranged between the connecting pipe and the top sealing seat, a sphere is fixedly assembled at the bottom of the connecting pipe, three groups of connecting flanges are arranged in a "T" shape on the outer wall of the sphere, a mounting groove is arranged in the middle of the top sealing seat, a sealing member is sealed and clamped on the inner wall of the mounting groove, a sealing ring 1 is inlaid on the top inner wall of the top sealing seat, a rotating shaft is rotatably connected to the inner wall of the top sealing seat, a rotating ring is threadedly connected to the top of the rotating shaft, a sealing ring 2 is arranged between the connecting pipe and the top sealing seat, a pressure gauge is inlaid on the outer wall of the top sealing seat, a supplementary interface is fixedly assembled on the bottom outer wall of the top sealing seat, a sealing cover is threadedly connected to the inner wall of the supplementary interface, an air guide groove is arranged on the top outer wall of the top sealing seat, an isolation valve is fixedly assembled on the bottom inner wall of the connecting pipe, a ball core is fixedly assembled on the bottom of the rotating shaft, and a notch is arranged on one side outer wall of the isolation valve;

[0006] The ball core comprises a ball body, and the outer wall of the ball body is respectively provided with a flow groove 1 and a flow groove 2, wherein the flow groove 1 and the flow groove 2 form a "T"-shaped channel, and the flow groove 1 passes through the center of the ball body, and three groups of pressure regulating components are arranged on the side of the ball body away from the flow groove 2, and compensation sheets are arranged between adjacent surfaces of the three groups of pressure regulating components;

[0007] The pressure ratio regulating assembly comprises a regulating body, the outer wall of the regulating body is respectively provided with a first slide groove and a second slide groove, the inner walls of the first slide groove and the second slide groove are both provided with a pressure ratio pressure bin, the inner wall of the first slide groove is slidably sleeved with a first seal, the inner wall of the second slide groove is slidably sleeved with a second seal, and the inner wall of the pressure ratio pressure bin is provided with a pressure bin supply pipe on a side close to the rotating shaft;

[0008] A plurality of the first chutes and a plurality of the second chutes are arranged in a ring shape with the circulation groove 1 as the axis, and the arc length of the plurality of the first chutes is 1.2 times the diameter of the circulation groove 1.

[0009] As a preferred technical solution of the present invention: the ball core is arranged in the inner cavity of the sphere, the three groups of connecting flanges are all connected to the inner cavity of the sphere, the connecting pipe and the top sealing seat are threadedly fixed and assembled by sealing bolts, and the connecting pipe and the top sealing seat are sealed by a second sealing ring.

[0010] As a preferred technical solution of the present invention: one end of the air guide groove is connected to the inner cavity of the connecting tube, the other end of the air guide groove is connected to the supplementary interface, and the detection end of the pressure gauge is arranged in the inner cavity of the connecting tube.

[0011] As a preferred technical solution of the present invention: the inner cavity composed of the connecting pipe, the top sealing seat, the sealing member, the rotating shaft and the ball core is filled with a medium, and the medium includes a liquid or a gas or a combination of a liquid and a gas, the liquid is water, and the gas is oxygen, hydrogen, helium, or a combination thereof.

[0012] As a preferred technical solution of the present invention: a plurality of the first slide grooves and a plurality of the second slide grooves are staggered with each other, adjacent surfaces of a plurality of the first seals and a plurality of the second seals are in contact with each other, and sealing rings are embedded on the inner walls of a plurality of the first slide grooves and a plurality of the second slide grooves.

[0013] As a preferred technical solution of the present invention: the three groups of pressure ratio regulating components and the two groups of compensation plates are fixed by bonding, the pressure bin supply pipe and the transmission pipe are connected, the inlet end of the transmission pipe is located at the inner wall of the isolation valve, and the rotating shaft and the isolation valve are rotatably connected.

[0014] The present invention has the following beneficial effects:

[0015] The pressure regulating and compensating sealed three-way rotary valve, through the pressure in the inner cavity of the pressure regulating component, pushes the first seal and the second seal to slide in the inner walls of the first slide groove and the second slide groove, so that the inner wall fitting force of the pressure regulating component and the sphere is increased, thereby realizing pressure regulation; when adjusting the pressure compensation, by rotating the inlet end of the transmission pipe to the notch, the pressure in the inner cavity of the connecting pipe is greater than the pressure in the inner cavity of the pressure regulating component, so that the pressure in the inner cavity of the pressure regulating component is increased, thereby increasing the pressure in the inner cavity of the pressure regulating component and pushing the first seal and the second seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting pipe of the present invention;

[0019] Figure 4 It is a schematic diagram of the notch structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the core structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the flow channel of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the pressure regulating assembly of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of the pressure bin supply pipe of the present invention.

[0024] In the figure: 1. connecting pipe; 2. top sealing seat; 3. sealing bolt; 4. ball; 5. connecting flange; 6. mounting groove; 7. sealing element; 8. sealing ring 1; 9. rotating ring; 10. rotating shaft; 11. sealing ring 2; 12. pressure gauge; 13. supplementary interface; 14. sealing cover; 15. air guide groove; 16. isolation valve; 17. ball core; 18. notch;

[0025] 1701, ball body; 1702, circulation slot 1; 1703, circulation slot 2; 1704, pressure regulating assembly; 1705, compensation sheet; 1706, transmission tube;

[0026] 17041. regulating body; 17042. first slide; 17043. second slide; 17044. pressure chamber; 17045. first sealing element; 17046. second sealing element; 17047. pressure chamber supply pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-8 The invention discloses a three-way rotary valve for regulating and compensating relative pressure, comprising a connecting pipe 1, a top sealing seat 2 is arranged at the top of the connecting pipe 1, a sealing bolt 3 is arranged between the connecting pipe 1 and the top sealing seat 2, a sphere 4 is fixedly assembled at the bottom of the connecting pipe 1, three groups of connecting flanges 5 are arranged in a "T" shape on the outer wall of the sphere 4, a mounting groove 6 is opened in the middle of the top sealing seat 2, a sealing member 7 is sealed and clamped on the inner wall of the mounting groove 6, a sealing ring 8 is inlaid on the top inner wall of the top sealing seat 2, a rotating shaft 10 is rotatably connected to the inner wall of the top sealing seat 2, and a rotating shaft 10 is rotatably connected to the inner wall of the top sealing seat 2. The top of the shaft 10 is threadedly connected to a rotating ring 9, a sealing ring 11 is arranged between the connecting pipe 1 and the top sealing seat 2, a pressure gauge 12 is embedded in the outer wall of the top sealing seat 2, a supplementary interface 13 is fixedly assembled on the bottom outer wall of the top sealing seat 2, a sealing cover 14 is threadedly connected to the inner wall of the supplementary interface 13, an air guide groove 15 is provided on the top outer wall of the top sealing seat 2, an isolation valve 16 is fixedly assembled on the bottom inner wall of the connecting pipe 1, a ball core 17 is fixedly assembled on the bottom of the rotating shaft 10, and a notch 18 is provided on the outer wall of one side of the isolation valve 16.

[0029] In a preferred embodiment: the ball core 17 is arranged in the inner cavity of the sphere 4, the three sets of connecting flanges 5 are all connected to the inner cavity of the sphere 4, the connecting pipe 1 and the top sealing seat 2 are threadedly fixed and assembled by sealing bolts 3, and the connecting pipe 1 and the top sealing seat 2 are sealed by a sealing ring 11.

[0030] In the above structure, the connection pipe 1 and the top sealing seat 2 are disassembled by the sealing bolt 3, and the sealing ring 11 is provided to improve the sealing performance between the connection pipe 1 and the top sealing seat 2.

[0031] In a preferred embodiment: one end of the air guide groove 15 is connected to the inner cavity of the connecting tube 1 , the other end of the air guide groove 15 is connected to the supplementary interface 13 , and the detection end of the pressure gauge 12 is arranged in the inner cavity of the connecting tube 1 .

[0032] In the above structure, the supplementary interface 13 is connected to the inner cavity of the connecting tube 1 through the air guide groove 15, so that the pressure in the inner cavity of the connecting tube 1 can be supplemented through the supplementary interface 13, and by setting the detection end of the pressure gauge 12 in the inner cavity of the connecting tube 1, the pressure in the inner cavity of the connecting tube 1 can be digitally displayed through the pressure gauge 12, thereby increasing the recognizability.

[0033] In a preferred embodiment: the inner cavity composed of the connecting tube 1, the top sealing seat 2, the sealing member 7, the rotating shaft 10, and the ball core 17 is filled with a medium, the medium includes a liquid or a gas or a combination of a liquid and a gas, the liquid can be water, and the gas can be oxygen, hydrogen, helium, or a combination thereof.

[0034] In the above structure, by filling the inner cavity with a medium, the core 17 is subjected to uniform force through the medium.

[0035] In a preferred embodiment: the ball core 17 includes a ball body 1701, and the outer wall of the ball body 1701 is respectively provided with a flow groove 1702 and a flow groove 2 1703, the flow groove 1702 and the flow groove 2 1703 form a "T"-shaped channel, and the flow groove 1702 passes through the center of the ball body 1701, and three groups of pressure ratio adjustment components 1704 are arranged on the side of the ball body 1701 away from the flow groove 2 1703, and compensation plates 1705 are arranged between adjacent surfaces of the three groups of pressure ratio adjustment components 1704.

[0036] In the above structure, the flow groove 1 1702 and the flow groove 2 1703 form a "T"-shaped channel, so that the ball core 17 can realize the on-off control of the three-way valve.

[0037] In a preferred embodiment: the pressure ratio regulating component 1704 includes a regulating body 17041, the outer wall of the regulating body 17041 is respectively provided with a first slide groove 17042 and a second slide groove 17043, the inner walls of the first slide groove 17042 and the second slide groove 17043 are provided with a pressure ratio pressure bin 17044, the inner wall of the first slide groove 17042 is slidably sleeved with a first seal 17045, the inner wall of the second slide groove 17043 is slidably sleeved with a second seal 17046, and the inner wall of the pressure ratio pressure bin 17044 is provided with a pressure bin supply pipe 17047 on the side close to the rotating shaft 10.

[0038] In a preferred embodiment: a plurality of first slide grooves 17042 and a plurality of second slide grooves 17043 are arranged in a ring shape with the circulation groove 1 1702 as the axis, and the arc length of the plurality of first slide grooves 17042 is 1.2 times the diameter of the circulation groove 1 1702 .

[0039] In the above structure, a plurality of first slide grooves 17042 and a plurality of second slide grooves 17043 are arranged in a ring shape with the circulation groove 1702 as the axis, and the arc length of the plurality of first slide grooves 17042 is 1.2 times the diameter of the circulation groove 1702. After the ball core 17 rotates, the second seals 17046 and the first seals 17045 arranged in the inner walls of the plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 can fit with the inner wall of the sphere 4, and make the fitting area larger than the diameter of the circulation groove 1702.

[0040] In a preferred embodiment: the plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 are staggered with each other, the adjacent surfaces of the plurality of first seals 17045 and the plurality of second seals 17046 fit together, and the inner walls of the plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 are inlaid with sealing rings.

[0041] In the above structure, a plurality of first slide grooves 17042 and a plurality of second slide grooves 17043 are staggered with each other, so that a plurality of first seals 17045 and a plurality of second seals 17046 form a sealing line with each other, and sealing rings are inlaid on the inner walls of a plurality of first slide grooves 17042 and a plurality of second slide grooves 17043, so that when the first seals 17045 and the second seals 17046 slide in the inner walls of the first slide grooves 17042 and the second slide grooves 17043, they are located in the pressure chamber 17044 to ensure that the medium will not overflow through the first slide grooves 17042 and the second slide grooves 17043.

[0042] In a preferred embodiment: the three groups of pressure ratio regulating components 1704 and the two groups of compensation plates 1705 are fixed by bonding, the pressure chamber supply pipe 17047 and the transmission pipe 1706 are connected, the inlet end of the transmission pipe 1706 is located on the inner wall of the isolation valve 16, and the rotating shaft 10 and the isolation valve 16 are rotatably connected.

[0043] In the above structure, the three groups of pressure ratio regulating components 1704 and the two groups of compensation sheets 1705 are fixed by bonding, so that the three groups of pressure ratio regulating components 1704 and the two groups of compensation sheets 1705 can be prepared in a modular manner.

[0044] Working principle: the supplementary interface 13 is connected to the inner cavity of the connecting tube 1 through the air guide groove 15, so that the pressure in the inner cavity of the connecting tube 1 can be supplemented through the supplementary interface 13, and the detection end of the pressure gauge 12 is set in the inner cavity of the connecting tube 1, so that the pressure in the inner cavity of the connecting tube 1 can be digitally displayed through the pressure gauge 12, thereby increasing recognition;

[0045] The pressure chamber supply pipe 17047 is connected to the transmission pipe 1706, the inlet end of the transmission pipe 1706 is located at the inner wall of the isolation valve 16, and the rotating shaft 10 is rotatably connected to the isolation valve 16; the connecting pipe 1 and the inner cavity of the pressure regulating component 1704 are pressurized through the supplementary interface 13, and the ball core 17 is rotated by the rotating shaft 10, so that the inlet end of the transmission pipe 1706 is located at the inner wall of the isolation valve 16, so as to achieve the isolation of the inner cavity space of the pressure regulating component 1704 and the inner cavity space of the connecting pipe 1.

[0046] At the same time, the pressure in the inner cavity of the connecting pipe 1 is controlled to be greater than the pressure in the inner cavity of the pressure regulating component 1704;

[0047] By using the plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 being arranged in an annular shape with the circulation groove 1702 as the axis, the arc length of the plurality of first slide grooves 17042 is 1.2 times the diameter of the circulation groove 1702, so that after the ball core 17 rotates, the second sealing member 17046 and the first sealing member 17045 arranged in the inner walls of the plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 can fit with the inner wall of the ball body 4, and the fitting area is made larger than the diameter of the circulation groove 1702;

[0048] The plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 are staggered so that the plurality of first seals 17045 and the plurality of second seals 17046 form a sealing line with each other, and the plurality of first slide grooves 17042 and the plurality of second slide grooves 17043 are inlaid with sealing rings on the inner walls thereof, so that when the first seals 17045 and the second seals 17046 slide in the inner walls of the first slide grooves 17042 and the second slide grooves 17043, the medium located in the inner cavity of the pressure chamber 17044 will not overflow through the first slide grooves 17042 and the second slide grooves 17043;

[0049] The pressure in the inner cavity of the pressure regulating component 1704 pushes the first sealing member 17045 and the second sealing member 17046 to slide in the inner walls of the first slide groove 17042 and the second slide groove 17043, thereby increasing the contact force between the pressure regulating component 1704 and the inner wall of the ball 4, thereby achieving pressure regulation.

[0050] When adjusting the pressure compensation, by rotating the inlet end of the transmission tube 1706 to the notch 18, the pressure in the inner cavity of the connecting tube 1 is increased by utilizing the fact that the pressure in the inner cavity of the pressure regulating assembly 1704 is greater than the pressure in the inner cavity of the pressure regulating assembly 1704, thereby increasing the pressure in the inner cavity of the pressure regulating assembly 1704 and pushing the force of the first seal 17045 and the second seal 17046.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way rotary valve with pressure regulating and compensating sealing, comprising a connecting pipe (1), characterized in that: A top sealing seat (2) is arranged at the top of the connecting pipe (1), a sealing bolt (3) is arranged between the connecting pipe (1) and the top sealing seat (2), a sphere (4) is fixedly mounted at the bottom of the connecting pipe (1), the outer wall of the sphere (4) is provided with three sets of connecting flanges (5) in a T-shape, a mounting groove (6) is opened in the middle of the top sealing seat (2), a sealing member (7) is sealed and clamped on the inner wall of the mounting groove (6), a sealing ring (8) is inlaid on the top inner wall of the top sealing seat (2), a rotating shaft (10) is rotatably connected to the inner wall of the top sealing seat (2), and the top of the rotating shaft (10) is threadedly connected to the top of the rotating shaft (10). A rotating ring (9) is provided, a sealing ring 2 (11) is provided between the connecting pipe (1) and the top sealing seat (2), a pressure gauge (12) is embedded in the outer wall of the top sealing seat (2), a supplementary interface (13) is fixedly mounted on the bottom outer wall of the top sealing seat (2), a sealing cover (14) is threadedly connected to the inner wall of the supplementary interface (13), an air guide groove (15) is provided on the top outer wall of the top sealing seat (2), an isolation valve (16) is fixedly mounted on the bottom inner wall of the connecting pipe (1), a ball core (17) is fixedly mounted on the bottom of the rotating shaft (10), and a notch (18) is provided on one side outer wall of the isolation valve (16); The ball core (17) comprises a ball body (1701), the outer wall of the ball body (1701) is respectively provided with a flow groove 1 (1702) and a flow groove 2 (1703), the flow groove 1 (1702) and the flow groove 2 (1703) form a "T"-shaped channel, and the flow groove 1 (1702) passes through the center of the ball body (1701), and three groups of pressure adjustment components (1704) are arranged on a side of the ball body (1701) away from the flow groove 2 (1703), and compensation plates (1705) are arranged between adjacent surfaces of the three groups of pressure adjustment components (1704); The pressure ratio regulating assembly (1704) comprises a regulating body (17041), the outer wall of the regulating body (17041) is respectively provided with a first slide groove (17042) and a second slide groove (17043), the inner walls of the first slide groove (17042) and the second slide groove (17043) are both provided with a pressure ratio pressure bin (17044), the inner wall of the first slide groove (17042) is slidably sleeved with a first sealing member (17045), the inner wall of the second slide groove (17043) is slidably sleeved with a second sealing member (17046), and the inner wall of the pressure ratio pressure bin (17044) is provided with a pressure bin supply pipe (17047) on the side close to the rotating shaft (10); A plurality of the first slide grooves (17042) and a plurality of the second slide grooves (17043) are arranged in a ring shape with the circulation groove one (1702) as the axis, and the arc length of the plurality of the first slide grooves (17042) is 1.2 times the diameter of the circulation groove one (1702).

2. The pressure regulating and compensating sealed three-way rotary valve according to claim 1, characterized in that: The ball core (17) is arranged in the inner cavity of the sphere (4), and the three groups of connecting flanges (5) are all connected to the inner cavity of the sphere (4). The connecting pipe (1) and the top sealing seat (2) are threadedly fixed and assembled by means of sealing bolts (3), and the connecting pipe (1) and the top sealing seat (2) are sealed by means of a second sealing ring (11).

3. The pressure regulating and compensating sealed three-way rotary valve according to claim 1, characterized in that: One end of the air guide groove (15) is in communication with the inner cavity of the connecting tube (1), the other end of the air guide groove (15) is connected to the supplementary interface (13), and the detection end of the pressure gauge (12) is arranged in the inner cavity of the connecting tube (1).

4. The pressure regulating and compensating sealed three-way rotary valve according to claim 1, characterized in that: The inner cavity formed by the connecting pipe (1), the top sealing seat (2), the sealing member (7), the rotating shaft (10) and the ball core (17) is filled with a medium, wherein the medium comprises a liquid or a gas or a combination of a liquid and a gas, wherein the liquid is water and the gas is oxygen, hydrogen, helium, or a combination thereof.

5. The pressure regulating and compensating sealed three-way rotary valve according to claim 4, characterized in that: A plurality of the first slide grooves (17042) and a plurality of the second slide grooves (17043) are staggered with each other, adjacent surfaces of a plurality of the first seals (17045) and a plurality of the second seals (17046) are in contact with each other, and inner walls of a plurality of the first slide grooves (17042) and a plurality of the second slide grooves (17043) are inlaid with sealing rings.

6. The pressure regulating and compensating sealed three-way rotary valve according to claim 5, characterized in that: The three groups of pressure ratio regulating components (1704) and the two groups of compensation plates (1705) are fixed by bonding, the pressure chamber supply pipe (17047) and the transmission pipe (1706) are connected, the inlet end of the transmission pipe (1706) is located at the inner wall of the isolation valve (16), and the rotating shaft (10) and the isolation valve (16) are rotatably connected.

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