A valve having good sealing properties

Abstract

The application provides a valve with good sealing performance, comprising a conveying pipeline and a valve body. In the axial direction of the conveying pipeline, the conveying pipeline comprises an inlet pipe and an outlet pipe in communication with the inlet pipe, and the inlet pipe and the outlet pipe are spaced apart to form a guide port; the valve body is arranged between the inlet pipe and the outlet pipe, and the valve body comprises a valve rod sliding in the radial direction of the conveying pipeline and a guide valve plate arranged on the valve rod, and the valve rod is arranged opposite to the guide port, wherein the guide valve plate can be embedded in the guide port and abut between the inlet pipe and the outlet pipe in the contraction direction of the guide port to block the conduction of the inlet pipe and the outlet pipe.

Description

Technical Field

[0001] This application relates to the field of valves, and more particularly to a valve with good sealing performance. Background Technology

[0002] Most existing valves use gates to block the flow of fluid between two sections of pipeline. When the gate is in operation, there are two main ways in which the contact surface between the gate and the pipeline blocks the flow: interval blocking and contact blocking.

[0003] During the blocking process, a certain gap exists between the gate and the contact surface between the two pipe sections. When the fluid pressure inside the pipe is low, this blocking method can basically meet the sealing requirements. However, once the flow pressure inside the pipe becomes too high, the strong fluid impact force will cause the gate to tilt. After the gate tilts, the gap between it and the pipe changes, and the originally relatively stable sealing state is destroyed, causing fluid to leak from the gap between the gate and the pipe, thus greatly reducing the sealing performance of the valve in blocking the conduction between the pipes.

[0004] The sealing method involves tightly fitting the gate valve against the contact surface between two pipe sections to block the flow. While this method can improve sealing to some extent, in actual operation, the long-term friction between the gate valve and the contact surface between the two pipe sections can easily lead to wear on both the gate valve and the inner wall of the pipe. As the wear increases, the fit precision between the gate valve and the contact surface between the two pipe sections decreases, and the sealing performance also declines.

[0005] Therefore, there is a need to provide a valve with good sealing performance. Utility Model Content

[0006] In view of this, it is necessary to provide a valve with good sealing performance to solve the above problems.

[0007] Embodiments of this application provide a valve with good sealing performance, comprising:

[0008] A conveying pipeline, along the axial direction of the conveying pipeline, the conveying pipeline includes an inlet pipe and an outlet pipe communicating with the inlet pipe, the inlet pipe and the outlet pipe being spaced apart to form a guide port;

[0009] A valve body is disposed between the inlet pipe and the outlet pipe. The valve body includes a valve stem that slides along the radial direction of the conveying pipe and a guide valve plate disposed on the valve stem. The valve stem is disposed opposite to the guide port. The guide valve plate can be embedded in the guide port and abut against the inlet pipe and the outlet pipe in the direction of contraction of the guide port, so as to block the conduction between the inlet pipe and the outlet pipe.

[0010] In at least one embodiment of this application, the inlet pipe has a first inclined surface, the outlet pipe has a second inclined surface, and the first inclined surface and the second inclined surface are disposed opposite each other along the central axis of the guide port;

[0011] The first inclined plane forms an angle A with the central axis, and the second inclined plane forms an angle B with the central axis, satisfying the relationship: A=B.

[0012] In at least one embodiment of this application, the guide valve plate has a sliding portion and a blocking portion, the sliding portion is connected to the blocking portion, the blocking portion is sandwiched between the first inclined surface and the second inclined surface, and along the radial direction, the blocking portion has a conical structure;

[0013] The conveying pipeline has a limiting groove along the radial direction of the conveying pipeline, the limiting groove is disposed opposite to the guide port, and the sliding part is disposed in the limiting groove.

[0014] In at least one embodiment of this application, the cross-sectional area of ​​the blocking portion is greater than the cross-sectional area of ​​the first inclined surface and the second inclined surface along the radial direction.

[0015] In at least one embodiment of this application, the valve body further includes an installation valve, a valve cover, and a sealing ring. The installation valve is disposed between the inlet pipe and the outlet pipe, the valve cover is disposed on the installation valve, and the sealing ring is sandwiched between the installation valve and the valve cover.

[0016] In at least one embodiment of this application, the valve cover has a threaded cavity and a sliding cavity connected to the threaded cavity, the threaded cavity being located at one end away from the guide port;

[0017] The valve stem includes a threaded rod and a sliding rod. The threaded rod is disposed in the threaded cavity, and the sliding rod is disposed in the sliding cavity. The sliding rod is connected to the guide valve plate.

[0018] In at least one embodiment of this application, a receiving cavity is provided between the mounting valve and the valve cover, the receiving cavity is connected to the threaded cavity and the sliding cavity, and the guide valve plate is disposed in the receiving cavity.

[0019] In at least one embodiment of this application, the valve body further includes a fixing member, the mounting valve has a first fixing hole, the valve cover has a second fixing hole, the first fixing hole and the second fixing hole are connected, and the fixing member passes through the first fixing hole and the second fixing hole.

[0020] In at least one embodiment of this application, the guide port has a tapered wide end and a tapered narrow end connected to the tapered wide end, wherein the tapered wide end is located at one end near the guide valve plate, and the blocking portion is embedded in the guide port.

[0021] In at least one embodiment of this application, the valve body further includes a handwheel, which is disposed on the threaded rod and at the end of the valve rod away from the guide valve plate.

[0022] The valve with good sealing performance described above is provided by setting an inlet pipe and an outlet pipe spaced apart axially in the conveying pipeline, forming a guide port between the inlet pipe and the outlet pipe, with the valve body placed therein, and the valve stem sliding radially. The guide valve plate on it can be embedded in the guide port and abut against the two pipes in the direction of contraction. When the valve is closed, the sliding thrust of the valve stem makes the guide valve plate press more tightly into the depth of the guide port, so that the guide valve plate is tightly fitted with the pipe end face between the inlet pipe and the outlet pipe, thereby enhancing the sealing performance of the valve. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a valve with good sealing performance in an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the structure of a valve with good sealing performance in another direction according to an embodiment of this application.

[0025] Figure 3 This is a top view of a valve with good sealing performance according to an embodiment of this application.

[0026] Figure 4 for Figure 3 Cross-sectional view of AA.

[0027] Figure 5 for Figure 3 Cross-sectional view of BB in the middle.

[0028] Figure 6 for Figure 3 Exploded cross-section of BB.

[0029] Figure 7 This is a cross-sectional view of the valve installation area.

[0030] Explanation of main component symbols

[0031] 100. A valve with good sealing performance; 10. A conveying pipeline; 11. An inlet pipe; 111. A first inclined surface; 12. An outlet pipe; 121. A second inclined surface; 13. A guide port; 131. A central axis; 132. A tapered wide end; 133. A tapered narrow end; 14. A limiting groove; 20. A valve body; 20a. A receiving cavity; 21. A valve stem; 211. A threaded rod; 212. A sliding rod; 22. A guide valve plate; 221. A sliding part; 222. A blocking part; 23. A mounting valve; 23a. A first fixing hole; 24. A valve cover; 24a. A threaded cavity; 24b. A sliding cavity; 24c. A second fixing hole; 25. A sealing ring; 26. A handwheel; F1. Axial direction; F2. Radial direction. Detailed Implementation

[0032] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0033] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0034] Embodiments of this application provide a valve with good sealing performance, comprising:

[0035] A conveying pipeline, along the axial direction of the conveying pipeline, the conveying pipeline includes an inlet pipe and an outlet pipe communicating with the inlet pipe, the inlet pipe and the outlet pipe being spaced apart to form a guide port;

[0036] A valve body is disposed between the inlet pipe and the outlet pipe. The valve body includes a valve stem that slides along the radial direction of the conveying pipe and a guide valve plate disposed on the valve stem. The valve stem is disposed opposite to the guide port. The guide valve plate can be embedded in the guide port and abut against the inlet pipe and the outlet pipe in the direction of contraction of the guide port, so as to block the conduction between the inlet pipe and the outlet pipe.

[0037] The valve with good sealing performance described above is provided by setting an inlet pipe and an outlet pipe spaced apart axially in the conveying pipeline, forming a guide port between the inlet pipe and the outlet pipe, with the valve body placed therein, and the valve stem sliding radially. The guide valve plate on it can be embedded in the guide port and abut against the two pipes in the direction of contraction. When the valve is closed, the sliding thrust of the valve stem makes the guide valve plate press more tightly into the depth of the guide port, so that the guide valve plate is tightly fitted with the pipe end face between the inlet pipe and the outlet pipe, thereby enhancing the sealing performance of the valve.

[0038] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] according to Figures 1-7 This application provides a valve 100 with good sealing performance, comprising: a delivery pipe 10 and a valve body 20.

[0040] The conveying pipe 10, along the axial direction F1 of the conveying pipe 10, includes an inlet pipe 11 and an outlet pipe 12 communicating with the inlet pipe 11. The inlet pipe 11 and the outlet pipe 12 are spaced apart to form a guide port 13. A valve body 20 is disposed between the inlet pipe 11 and the outlet pipe 12. The valve body 20 includes a valve stem 21 that slides along the radial direction F2 of the conveying pipe 10 and a guide valve plate 22 disposed on the valve stem 21. The valve stem 21 is disposed opposite to the guide port 13. The guide valve plate 22 can be embedded in the guide port 13 and abut against the inlet pipe 11 and the outlet pipe 12 in the contraction direction of the guide port 13 to block the conduction between the inlet pipe 11 and the outlet pipe 12.

[0041] Specifically, the conveying pipe 10 is used to transport fluid substances. The inlet pipe 11 and the outlet pipe 12 are on the same axis, thus ensuring the movement path of the fluid substance. A guide port 13, spaced between the inlet pipe 11 and the outlet pipe 12, allows the guide valve plate 22 to move towards the guide port 13 during valve closing, thereby blocking the connection between the inlet pipe 11 and the outlet pipe 12. Furthermore, the guide port 13 has a conical or wedge-shaped structure, and when the guide valve plate 22 moves towards the guide port 13, the guide valve plate 22 penetrates into the narrow end of the guide port 13, thus generating a certain squeezing effect when embedded, enhancing the sealing effect. Simultaneously, it guides the movement of the guide valve plate 22, providing a basis for its embedding and sealing, and helping to improve the overall sealing performance of the valve.

[0042] Furthermore, the valve body 20 is the core component for the valve to open and close. The valve stem 21 slides radially F2 along the conveying pipeline 10, which drives the guide valve plate 22 to move between the inlet pipe 11 and the outlet pipe 12. The relative arrangement of the valve stem 21 and the guide port 13 ensures that the guide valve plate 22 can accurately enter the guide port 13 during movement. The position of the guide valve plate 22 can be easily controlled by the sliding of the valve stem 21, thereby realizing the opening and closing of the pipeline.

[0043] Furthermore, when the valve needs to be closed, the valve stem 21 is slid along the radial direction F2 of the conveying pipeline 10 towards the area between the inlet pipe 11 and the outlet pipe 12, thereby blocking the connection between the inlet pipe 11 and the outlet pipe 12. The valve stem 21 moves the guide valve plate 22 together, and the guide valve plate 22 gradually enters the guide port 13 along the conical or wedge-shaped structure of the guide port 13. As the valve stem 21 continues to slide, the guide valve plate 22, guided by the guide port 13, is pressed against the inner walls of the inlet pipe 11 and the outlet pipe 12, and finally tightly embedded in the guide port 13, abutting between the inlet pipe 11 and the outlet pipe 12, thereby blocking the connection between the inlet pipe 11 and the outlet pipe 12. When the valve needs to be opened, the valve stem 21 is operated in the opposite direction, causing the guide valve plate 22 to move out of the guide port 13, and the connection between the inlet pipe 11 and the outlet pipe 12 is restored.

[0044] In one specific embodiment, the inlet pipe 11 has a first inclined surface 111, and the outlet pipe 12 has a second inclined surface 121. Along the central axis 131 of the guide port 13, the first inclined surface 111 and the second inclined surface 121 are arranged opposite each other; wherein, the first inclined surface 111 and the central axis 131 form an angle A, and the second inclined surface 121 and the central axis 131 form an angle B, satisfying the relationship: A=B.

[0045] Specifically, the first inclined plane 111 and the second inclined plane 121, which are positioned opposite each other, provide a more precise guiding path for the movement of the guide valve plate 22. When the valve is closed, the guide valve plate 22 can move smoothly into the guide port 13 along these two opposing inclined planes, ensuring the straightness and stability of the movement. This reduces sealing problems caused by movement deviations. At the same time, the opposing inclined plane structure helps to make the contact between the guide valve plate 22 and the inlet pipe 11 and the outlet pipe 12 more uniform when the guide valve plate 22 is installed, thus enhancing the sealing effect.

[0046] Furthermore, the equality of included angles A and B ensures that the inclined surfaces of the inlet pipe 11 and the outlet pipe 12 are symmetrical in structure and function, thereby making the resistance on both sides of the guide valve plate 22 uniform during movement, and enabling it to smoothly enter the guide port 13 and be embedded therein.

[0047] In summary, the valve stem 21 drives the guide valve plate 22 to move. The guide valve plate 22 first contacts the first inclined surface 111 of the inlet pipe 11 and the second inclined surface 121 of the outlet pipe 12. Since these two inclined surfaces are facing each other and have equal angles, the guide valve plate 22 moves smoothly into the guide port 13 along the inclined surfaces. As the valve stem 21 continues to slide, the guide valve plate 22 gradually enters the conical or wedge-shaped area of ​​the guide port 13. Guided by the guide port 13, it is squeezed against the inner walls of the inlet pipe 11 and the outlet pipe 12, and finally tightly embedded in the guide port 13, abutting between the inlet pipe 11 and the outlet pipe 12, thereby blocking the conduction between the inlet pipe 11 and the outlet pipe 12.

[0048] In one specific embodiment, the guide valve plate 22 has a sliding part 221 and a blocking part 222. The sliding part 221 is connected to the blocking part 222. The blocking part 222 is sandwiched between the first inclined surface 111 and the second inclined surface 121 and is conical along the radial direction F2. The conveying pipe 10 has a limiting groove 14 along the radial direction F2 of the conveying pipe 10. The limiting groove 14 is opposite to the guide port 13. The sliding part 221 is disposed in the limiting groove 14.

[0049] Specifically, the blocking part 222 is sandwiched between the first inclined surface 111 and the second inclined surface 121, and its conical structure can fit the shape of the first inclined surface 111 and the second inclined surface 121. During the valve closing process, the blocking part 222 gradually penetrates into the guide port 13 along the first inclined surface 111 and the second inclined surface 121, thereby blocking the connection between the inlet pipe 11 and the outlet pipe 12.

[0050] Furthermore, the limiting groove 14 provides space and a path for the sliding part 221 to move, restricting its direction of movement so that it can only move in the radial direction F2. This ensures that the guide valve plate 22 can accurately reach the predetermined position during closing and opening. It prevents the guide valve plate 22 from shifting or wobbling during movement, thus guaranteeing the valve's sealing performance. At the same time, the presence of the limiting groove 14 also helps reduce wear between the guide valve plate 22 and the delivery pipeline 10, extending the valve's service life.

[0051] In one specific embodiment, along the radial direction F2, the cross-sectional area of ​​the blocking portion 222 is greater than the cross-sectional areas of the first inclined surface 111 and the second inclined surface 121.

[0052] Specifically, the larger cross-sectional area of ​​the blocking portion 222 allows for a larger contact area when it comes into contact with the inner walls of the inlet pipe 11 and the outlet pipe 12. Furthermore, it allows the guide valve plate 22 to extend deeper into the guide port 13, and as the guide valve plate 22 extends deeper, the blocking portion 222 has a greater contact area with the first inclined surface 111 and the second inclined surface 121, thereby effectively preventing fluid leakage from the gap between the inlet pipe 11 and the outlet pipe 12.

[0053] In one specific embodiment, the valve body 20 further includes an installation valve 23, a valve cover 24, and a sealing ring 25. The installation valve 23 is disposed between the inlet pipe 11 and the outlet pipe 12, the valve cover 24 is disposed on the installation valve 23, and the sealing ring 25 is sandwiched between the installation valve 23 and the valve cover 24.

[0054] Specifically, the mounting valve 23 and the delivery pipeline 10 are integrated into one structure, thereby improving the valve's sealing performance. Furthermore, the mounting valve 23 provides a base for the installation and support of other components (such as the guide valve plate 22, valve stem 21, valve cover 24, etc.). The valve cover 24, in conjunction with the mounting valve 23, provides installation space for the sealing ring 25, contributing to the formation of a sealing structure.

[0055] Furthermore, the sealing ring 25 is one of the key components for valve sealing, and it is made of soft rubber sealing sleeve material. It is used to seal the gap between the valve 23 and the valve cover 24, preventing fluid leakage from this gap. When the valve is closed, the sealing ring 25 can withstand a certain pressure, ensuring a seal between the inlet pipe 11 and the outlet pipe 12.

[0056] In one specific embodiment, the valve cover 24 has a threaded cavity 24a and a sliding cavity 24b connected to the threaded cavity 24a. The threaded cavity 24a is located at one end away from the guide port 13. The valve stem 21 includes a threaded rod 211 and a sliding rod 212. The threaded rod 211 is located in the threaded cavity 24a, and the sliding rod 212 is located in the sliding cavity 24b. The sliding rod 212 is connected to the guide valve plate 22.

[0057] Specifically, the threaded cavity 24a provides installation space for the threaded rod 211, and the threaded connection enables a reliable connection and transmission between the valve stem 21 and the valve cover 24. The sliding cavity 24b provides a movement path for the sliding rod 212, allowing it to slide smoothly within it. The connection between the sliding cavity 24b and the threaded cavity 24a ensures the overall continuity of the valve stem 21's movement.

[0058] Furthermore, the threaded rod 211, through its threaded engagement with the threaded cavity 24a, transmits external operating force to the valve stem 21, enabling the valve stem 21 to rotate. Sliding within the sliding cavity 24b converts the rotation of the threaded rod 211 into the linear motion of the guide valve plate 22. The connection between the sliding rod 212 and the guide valve plate 22 allows the guide valve plate 22 to accurately follow the rotation of the valve stem 21, thus opening and closing the valve.

[0059] In summary, the sliding rod 212 is connected to the guide valve plate 22. When the threaded rod 211 rotates in the threaded cavity 24a, the sliding rod 212 slides in the sliding cavity 24b, causing the guide valve plate 22 to move along the first inclined surface 111 of the inlet pipe 11 and the second inclined surface 121 of the outlet pipe 12, and finally be embedded in the guide port 13 to achieve valve closure.

[0060] In one specific embodiment, a receiving cavity 20a is provided between the mounting valve 23 and the valve cover 24, the receiving cavity 20a connects the threaded cavity 24a and the sliding cavity 24b, and the guide valve plate 22 is disposed in the receiving cavity 20a.

[0061] Specifically, the receiving cavity 20a provides a dedicated installation space for the guide valve plate 22. When the threaded rod 211 rotates in the threaded cavity 24a, the sliding rod 212 slides in the sliding cavity 24b, causing the guide valve plate 22 to move away from the guide port 13, thereby allowing the guide valve plate 22 to slide towards the receiving cavity 20a.

[0062] In one specific embodiment, the valve body 20 further includes a fixing member, the mounting valve 23 has a first fixing hole 23a, the valve cover 24 has a second fixing hole 24c, the first fixing hole 23a and the second fixing hole 24c are connected, and the fixing member passes through the first fixing hole 23a and the second fixing hole 24c.

[0063] Specifically, the fastener securely connects the mounting valve 23 and the valve cover 24 together through the first fixing hole 23a and the second fixing hole 24c, ensuring the integrity and stability of the valve structure. The fastener uses bolts, screws, or other fixing structures, making the connection between the mounting valve 23 and the valve cover 24 detachable. When the valve needs maintenance or component replacement, the fastener can be easily disassembled, and the valve cover 24 can be removed from the mounting valve 23 for inspection, maintenance, or replacement of internal components.

[0064] In one specific embodiment, the guide port 13 has a tapered wide end 132 and a tapered narrow end 133 connected to the tapered wide end 132, wherein the tapered wide end 132 is located at one end near the guide valve plate 22, and the blocking part 222 is embedded in the guide port 13.

[0065] Specifically, the design of the tapered wide end 132 allows the guide port 13 to have a larger opening size at the end near the guide valve plate 22, facilitating the smooth entry of the blocking part 222 into the guide port 13 under the push of the valve stem 21. The design of the tapered narrow end 133 allows the blocking part 222 to be more stably fixed after it is fully embedded in the guide port 13. The smaller size of the tapered narrow end 133 can limit the blocking part 222 to a certain extent, preventing the blocking part 222 from displacing under fluid pressure or other external forces, thereby ensuring the stability of the seal. When the valve is closed, the blocking part 222 can penetrate from the tapered wide end 132 into the guide port 13 and gradually penetrate into the tapered narrow end 133, reducing the problem of the blocking part 222 getting stuck or unable to enter due to an insufficiently small inlet.

[0066] Furthermore, as the blocking part 222 extends deeper into the guide port 13, the tapered structure of the guide port 13 causes the tapered blocking part 222 to gradually shrink, thereby generating a certain squeezing effect when the inlet pipe 11 and the outlet pipe 12 come into contact. This squeezing effect helps to enhance the sealing effect between the blocking part 222 and the inlet pipe 11 and the outlet pipe 12.

[0067] In one specific embodiment, the valve body 20 further includes a handwheel 26, which is disposed on the threaded rod 211 and at the end of the valve rod 21 away from the guide valve plate 22.

[0068] Specifically, the handwheel 26 allows the operator to manually rotate the valve stem 21, thereby controlling the opening and closing of the valve.

[0069] Therefore, the valve 100 with good sealing performance provided above is provided by axially spaced inlet pipe 11 and outlet pipe 12 in the conveying pipeline 10, and a guide port 13 is formed between the inlet pipe 11 and outlet pipe 12. The valve body 20 is placed therein, the valve stem 21 slides radially, and the guide valve plate 22 on it can be embedded therein and abut against the two pipes in the direction of contraction of the guide port 13. When the valve is closed, the sliding thrust of the valve stem 21 makes the guide valve plate 22 press more tightly into the guide port 13, so that the guide valve plate 22 is tightly fitted with the pipe end face between the inlet pipe 11 and the outlet pipe 12, thereby enhancing the sealing performance of the valve.

[0070] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A valve with good sealing performance, characterized in that, include: A conveying pipeline, along the axial direction of the conveying pipeline, the conveying pipeline includes an inlet pipe and an outlet pipe communicating with the inlet pipe, the inlet pipe and the outlet pipe being spaced apart to form a guide port; A valve body is disposed between the inlet pipe and the outlet pipe. The valve body includes a valve stem that slides along the radial direction of the conveying pipe and a guide valve plate disposed on the valve stem. The valve stem is disposed opposite to the guide port. The guide valve plate can be embedded in the guide port and abut against the inlet pipe and the outlet pipe in the direction of contraction of the guide port, so as to block the conduction between the inlet pipe and the outlet pipe.

2. The valve with good sealing performance according to claim 1, characterized in that, The inlet pipe has a first inclined surface, and the outlet pipe has a second inclined surface. Along the central axis of the guide port, the first inclined surface and the second inclined surface are directly opposite each other. The first inclined plane forms an angle A with the central axis, and the second inclined plane forms an angle B with the central axis, satisfying the relationship: A=B.

3. A valve with good sealing performance according to claim 2, characterized in that, The guide valve plate has a sliding part and a blocking part, the sliding part is connected to the blocking part, the blocking part is sandwiched between the first inclined surface and the second inclined surface, and along the radial direction, the blocking part has a conical structure; The conveying pipeline has a limiting groove along the radial direction of the conveying pipeline, the limiting groove is disposed opposite to the guide port, and the sliding part is disposed in the limiting groove.

4. A valve with good sealing performance according to claim 3, characterized in that, Along the radial direction, the cross-sectional area of ​​the blocking portion is greater than the cross-sectional areas of the first inclined surface and the second inclined surface.

5. A valve with good sealing performance according to claim 1, characterized in that, The valve body also includes an installation valve, a valve cover, and a sealing ring. The installation valve is located between the inlet pipe and the outlet pipe, the valve cover is located on the installation valve, and the sealing ring is sandwiched between the installation valve and the valve cover.

6. A valve with good sealing performance according to claim 5, characterized in that, The valve cover has a threaded cavity and a sliding cavity connected to the threaded cavity, and the threaded cavity is located at the end away from the guide port; The valve stem includes a threaded rod and a sliding rod. The threaded rod is disposed in the threaded cavity, and the sliding rod is disposed in the sliding cavity. The sliding rod is connected to the guide valve plate.

7. A valve with good sealing performance according to claim 6, characterized in that, A receiving cavity is provided between the installation valve and the valve cover. The receiving cavity connects the threaded cavity and the sliding cavity. The guide valve plate is disposed in the receiving cavity.

8. A valve with good sealing performance according to claim 5, characterized in that, The valve body also includes a fixing member. The mounting valve has a first fixing hole, and the valve cover has a second fixing hole. The first fixing hole and the second fixing hole are connected and the fixing member passes through the first fixing hole and the second fixing hole.

9. A valve with good sealing performance according to claim 3, characterized in that, The guide port has a tapered wide end and a tapered narrow end connected to the tapered wide end, wherein the tapered wide end is located at one end near the guide valve plate, and the blocking part is embedded in the guide port.

10. A valve with good sealing performance according to claim 6, characterized in that, The valve body also includes a handwheel, which is mounted on the threaded rod and located at the end of the valve rod away from the guide valve plate.

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