Double-track ball valve adaptive to high-frequency opening and closing

Abstract

The application discloses a double-track ball valve suitable for high-frequency opening and closing, and relates to the technical field of ball valves.The double-track ball valve comprises a valve body, a valve ball, a sealing assembly and a hand wheel.The valve body is internally provided with a medium flow channel;the valve ball is installed in the valve body and controls the opening and closing of the medium flow channel through rotation cooperation;the sealing assembly is installed at both ends of the valve body and is used for connecting the valve body with external pipelines;the hand wheel is located at the top of a transmission mechanism and is connected with the transmission mechanism;when the double-track ball valve is closed, an operator rotates the hand wheel, the hand wheel drives a threaded rod to rotate, and the bottom and the top of the valve ball realize synchronous horizontal displacement under the action of a guide mechanism, so that the sealing surface of the valve ball can be uniformly pressed on the first sealing ring of a sealing seat;the design effectively overcomes the defect that the sealing performance of the bottom of a traditional track ball valve is poor, even if the valve ball is abraded, the sealing effect can still be maintained, and the valve is ensured to be suitable for high-frequency opening and closing working conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball valves, in particular to a double-track ball valve suitable for high-frequency opening and closing. BACKGROUND

[0002] In modern industrial fluid control systems, ball valves are widely used for the transportation and control of various media as a high-efficiency and reliable control element.

[0003] According to the search, the patent with the patent number CN221525621U discloses a track ball valve. Although the ball valve can make the limit pin roll smoothly and freely, reduce the friction between the valve stem track groove and the limit pin, change the track trajectory of the valve stem track groove, increase the turning angle, and reduce the load of the limit pin, in the existing design of the track ball valve, the sealing action of the valve ball mainly depends on the guiding action of the valve stem and the valve ball. Through the rotation or push-pull action of the valve stem, the top end of the valve ball is forced to tilt to one side, so that the valve ball and the valve seat are tightly fitted to achieve sealing.

[0004] However, this design has a significant technical defect: the bottom of the valve ball remains stationary during the sealing process and cannot form effective sealing contact with the valve seat. Because the contact surface between the bottom of the valve ball and the valve seat has less pressure, the sealing performance between the lower half of the valve ball and the valve seat is poor. This problem is particularly prominent in high-frequency opening and closing conditions, because frequent opening and closing actions will continuously wear the contact surface between the valve ball and the valve seat, further reducing the sealing performance, and ultimately affecting the reliability and service life of the valve SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a double-track ball valve suitable for high-frequency opening and closing, which solves the problem of uneven pressure on the sealing surface between the valve ball and the valve seat of the existing track ball valve, which easily leads to poor sealing of the local sealing surface.

[0006] To achieve the above purpose, the present application is implemented by the following technical scheme: a double-track ball valve suitable for high-frequency opening and closing, comprising:

[0007] a valve body, which is internally provided with a medium flow passage;

[0008] a valve ball, which is installed inside the valve body and controls the opening and closing of the medium flow passage through rotation cooperation;

[0009] a sealing assembly, which is installed at both ends of the valve body and used to connect the valve body with external pipelines;

[0010] a transmission mechanism, which is connected with the valve ball and used to control the opening and closing of the valve ball;

[0011] A hand wheel is located on the top of the transmission mechanism and is connected to the transmission mechanism.

[0012] Preferably, the valve body comprises a connecting seat, one end of the connecting seat is connected to the valve seat by a bolt, the inside of the valve seat is provided with a sealing seat, the sealing seat protrudes from the inner wall of the valve seat, the surface of the sealing seat is embedded with a first sealing ring, the first sealing ring is attached to the surface of the valve ball, and the top and bottom surfaces of the inside of the valve seat are provided with grooves, and the grooves provided on the top and bottom surfaces of the inside of the valve seat are in sliding connection with the valve ball, the valve ball is aligned with the passages at both ends of the valve seat through rotational cooperation; the valve assembly is connected to the valve seat by the bolt of the connecting seat, and the sealing seat and the first sealing ring in the inside of the valve seat cooperate, so that the valve ball can be aligned with the passages at both ends of the valve seat during rotational cooperation, and the protruding structure of the sealing seat and the embedded first sealing ring ensure the close attachment of the surface of the valve ball to the sealing seat, thereby improving the sealing performance of the valve.

[0013] Preferably, the valve ball is provided with a protruding structure at the top and bottom, a sealing surface is provided on one side of the valve ball, a rectangular limiting groove is provided at one end of the top of the valve ball, and two connecting arms are provided at one end of the bottom of the valve ball, one end of the connecting arm is connected to the valve ball, and the connecting arm is in sliding connection with the inside of the valve seat; the protruding structure at the top and bottom and the sealing surface on one side enable the valve ball to achieve more stable sealing effect during movement. At the same time, the rectangular limiting groove at the top and the two connecting arms at the bottom are in sliding connection with the inside of the valve seat, which ensures the accurate guidance and positioning of the valve ball during opening and closing, effectively solves the problem of uneven pressure of the valve ball and the sealing surface of the valve seat in the prior art, and improves the sealing performance and service life of the valve under high-frequency opening and closing conditions, wherein the guide head is always connected to the limiting groove, and the rotation angle of the valve ball is ninety degrees under the limitation of the track.

[0014] Preferably, the sealing assembly comprises two inner copper pipes, one end of each of the two inner copper pipes is inserted into the inside of the valve seat and the connecting seat, and the outer wall of the inner copper pipe is closely attached to the inner wall of the valve seat and the connecting seat, the outer wall of the inner copper pipe is connected to a sealing gasket, the sealing gasket is provided with two, and the two sealing gaskets are respectively provided at one end of the valve seat and the connecting seat, and the two sealing gaskets are attached to the surface of the flange, a second sealing ring is provided on both sides of the sealing gasket, the outer side of the sealing gasket is connected to an outer copper pipe, and the inner wall of the outer copper pipe is attached to the outer wall of the flange; the sealing assembly is closely attached to the valve seat and the connecting seat by the inner copper pipe, and the sealing gasket is attached to the flange, and the second sealing ring is provided, forming a multi-layer sealing structure, which effectively enhances the sealing performance of the valve and the external pipeline connection, and ensures the sealing reliability of the valve under various working conditions.

[0015] Preferably, the inner copper pipe, the sealing gasket and the outer copper pipe are of an integrated structure, and are all made of copper, the outer copper pipe is provided with annular grooves on the surface, and the grooves are distributed at equal intervals; the sealing assembly adopts the integrated copper structure of the inner copper pipe, the sealing gasket and the outer copper pipe, and the annular grooves on the surface of the outer copper pipe are distributed at intervals; this design not only enhances the overall strength and heat exchange area of the sealing assembly, but also utilizes the good thermal conductivity and thermal expansion coefficient of copper to make the sealing assembly uniformly expand in a high-temperature environment, further improve the sealing performance, and maintain good sealing effect when the temperature changes, effectively solving the problem of the decline in sealing performance caused by temperature changes.

[0016] Preferably, the transmission mechanism comprises a threaded rod, one end of the bottom of the threaded rod is rotationally connected with a guide rod, two tracks are symmetrically distributed on the outer wall surface of the guide rod, the tracks are slidably connected with limit pins inside, and the guide rod is fixedly installed with a pressing block on the outside through connecting screws; the transmission mechanism realizes accurate control of the valve ball through the rotational connection of the threaded rod and the guide rod, and the sliding fit of the two tracks on the outer wall of the guide rod and the limit pins, which enables the valve ball to move smoothly and accurately during opening and closing.

[0017] Preferably, the bottom of the guide rod is provided with a guide head, one side of the guide head is of an inclined surface structure, the outer wall of the guide head is in sliding contact with the inner wall of the limit groove, the limit pin is connected with a connecting cover, the connecting cover is fixedly installed on the top of the valve seat through bolts, the connecting cover is connected with the upper end cover through bolts, the upper end cover is connected with the sealing cover through bolts, and the sealing cover is threadedly connected with the threaded rod; the transmission mechanism realizes accurate guidance and positioning of the valve ball through the sliding contact of the guide head at the bottom of the guide rod and the limit groove on the valve ball, and the connection of the limit pin and the connecting cover, which enables the valve ball to move smoothly and accurately during opening and closing, ensures the reliability and sealing performance of the valve, effectively solves the problem of uneven pressure on the valve ball and the valve seat sealing surface in the prior art, and improves the service life of the valve under high-frequency opening and closing conditions.

[0018] Preferably, the outer wall of the guide rod is slidably connected with a sliding block, guide columns are connected with the sliding block at both ends through bolts, the guide columns are slidably connected with the inside of the valve seat, a spring is arranged at the top of the guide column, and the bottom of the guide column is of an inclined surface structure; the transmission mechanism realizes smooth movement and accurate control of the valve ball through the sliding connection of the guide rod and the sliding block, and the sliding fit of the guide columns at both ends of the sliding block and the inside of the valve seat; the inclined surface structure at the bottom of the guide column and the spring at the top enable the valve ball to realize uniform sealing pressure distribution during opening and closing.

[0019] The application provides a double-track ball valve suitable for high-frequency opening and closing.

[0020] When the double-track ball valve is closed, the operator rotates the hand wheel, and the hand wheel drives the threaded rod to rotate. During the rotation of the threaded rod, it moves downward according to the interaction of its external threads and the matching components, thereby driving the guide rod to move downward synchronously. The downward movement of the guide rod causes the limit pin to slide in the track, and the limit pin moves from the bottom to the top of the track. When it reaches the arc-shaped part in the middle of the track, the guide rod realizes a ninety-degree rotation by virtue of the guiding function of the limit pin. The guide head at the bottom of the guide rod is connected with the limit slot on the valve ball, and the valve ball is pulled to rotate ninety degrees synchronously, causing the flow-through channel between the valve ball and the valve seat to be closed. With the continuous downward movement of the guide rod, the sliding block is pushed downward by the pressure cover, and the guide column is moved downward by the sliding block. The slope at the bottom of the guide column contacts the connecting arm at the bottom of the valve ball, and during the downward movement of the guide column, the slope at the bottom forces the connecting arm to move horizontally to one side, thereby driving the bottom of the valve ball to move horizontally. At the same time, when the guide rod moves downward, the bottom guide head contacts the top of the limit slot, pushing the limit slot to move the top of the valve ball horizontally to one side. Under the action of the guide mechanism, the bottom and top of the valve ball realize synchronous horizontal displacement, so that the sealing surface of the valve ball can be uniformly pressed on the first sealing ring of the sealing seat. This design effectively overcomes the defect of poor sealing performance of the bottom of the valve ball in traditional track ball valves, and even if the valve ball is worn, it can still maintain good sealing effect, ensuring that the valve is suitable for high-frequency opening and closing conditions. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 is a schematic diagram of the internal structure of the present application;

[0023] Figure 3 is a schematic diagram of the cross-sectional structure of the present application;

[0024] Figure 4 is a schematic diagram of the connection between the valve ball and the guide rod of the present application;

[0025] Figure 5 is a schematic diagram of the sealing assembly structure of the present application;

[0026] Figure 6 is a schematic diagram of the transmission mechanism structure of the present application;

[0027] Figure 7 is a schematic diagram of the valve ball structure of the present application;

[0028] Figure 8 is a schematic diagram of the guide column structure of the present application.

[0029] In the figure, 1, valve body; 101, connecting seat; 102, valve seat; 103, sealing seat; 104, first sealing ring; 2, valve ball; 201, limiting groove; 202, connecting arm; 203, sealing surface; 3, sealing assembly; 301, inner copper pipe; 302, sealing gasket; 303, outer copper pipe; 304, second sealing ring; 305, flange; 4, transmission mechanism; 401, threaded rod; 402, guide rod; 403, track; 404, limiting pin; 405, connecting screw; 406, guide head; 407, connecting cover; 408, upper end cover; 409, sealing cover; 410, pressing block; 411, sliding block; 412, spring; 413, guide column; 5, hand wheel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0031] Please refer to Figures 1-8 The embodiments of the present application provide a technical solution: a double-track ball valve suitable for high-frequency opening and closing, comprising: a valve body 1, which is internally provided with a medium flow passage; a valve ball 2, which is installed in the inside of the valve body 1 and controls the opening and closing of the medium flow passage through rotation cooperation; a sealing assembly 3, which is installed at both ends of the valve body 1 and is used for connecting the valve body 1 with external pipelines; a transmission mechanism 4, which is connected with the valve ball 2 and is used for controlling the opening and closing of the valve ball 2; and a hand wheel 5, which is located at the top of the transmission mechanism 4 and is connected with the transmission mechanism 4.

[0032] The double-track 403 ball valve enables the valve ball 2 to realize synchronous horizontal movement at the top and the bottom during the closing process through the transmission mechanism 4, so that the sealing surface 203 of the valve ball 2 can be uniformly pressed on the sealing seat 103, thereby overcoming the defect that the bottom sealing performance of the valve ball 2 of the conventional track 403 ball valve is poor. Even after the valve ball 2 is worn, it can still maintain good sealing effect, effectively solving the problem that the sealing surface 203 of the valve ball 2 and the valve seat 102 are unevenly pressed, which easily leads to poor local sealing of the sealing surface 203, and significantly improving the reliability and service life of the valve under high-frequency opening and closing working conditions.

[0033] Embodiment 2

[0034] Please refer to Figures 1-8The embodiment of the present application provides a technical scheme, the valve body 1 includes the connecting seat 101, one end of the connecting seat 101 is connected with the valve seat 102 through a bolt, the inside of the valve seat 102 is provided with the sealing seat 103, the sealing seat 103 protrudes the inner wall surface of the valve seat 102, the surface of the sealing seat 103 is embedded with the first sealing ring 104, the first sealing ring 104 is attached to the surface of the valve ball 2, and recesses are formed in the top surface and the bottom surface of the inside of the valve seat 102, and the recesses formed in the top surface and the bottom surface of the inside of the valve seat 102 are in sliding connection with the valve ball 2, the valve ball 2 is aligned with the passages at both ends of the valve seat 102 through rotary cooperation;The bottom and the top of the valve ball 2 are provided with protruding structures, one side of the valve ball 2 is provided with a sealing surface 203, one end of the top of the valve ball 2 is provided with a rectangular limiting groove 201, two connecting arms 202 are arranged at one end of the bottom of the valve ball 2, one end of the connecting arm 202 is connected with the valve ball 2, and the connecting arm 202 is in sliding connection with the inside of the valve seat 102;The transmission mechanism 4 includes a threaded rod 401, one end of the bottom of the threaded rod 401 is rotationally connected with a guide rod 402, two tracks 403 are symmetrically arranged on the surface of the outer wall of the guide rod 402, the inside of the track 403 is in sliding connection with a limiting pin 404, and a pressing block 410 is fixedly installed on the outside of the guide rod 402 through a connecting screw 405;A guide head 406 is arranged at one end of the bottom of the guide rod 402, one side of the guide head 406 is in inclined surface structure, the outer wall of the guide head 406 is in sliding contact with the inner wall of the limiting groove 201, the limiting pin 404 is connected with a connecting cover 407, the connecting cover 407 is fixedly installed on the top of the valve seat 102 through a bolt, the connecting cover 407 is connected with an upper end cover 408 through a bolt, the upper end cover 408 is connected with a sealing cover 409 through a bolt, and the sealing cover 409 is in threaded connection with the threaded rod 401;The outer wall of the guide rod 402 is in sliding connection with a sliding block 411, the sliding block 411 is connected with a guide column 413 through a bolt at both ends, the guide column 413 is in sliding connection with the inside of the valve seat 102, a spring 412 is arranged at the top of the guide column 413, and one end of the bottom of the guide column 413 is in inclined surface structure.

[0035] When the valve needs to be closed, the hand wheel 5 is rotated, and the threaded rod 401 is rotated and moved downward through the outer wall thread, and the guide rod 402 is moved downward, and the limiting pin 404 is slid in the two tracks 403, the positioning pin moves from the bottom of the track 403 to the top of the track 403, and when the positioning pin moves to the middle arc position of the track 403, the guide rod 402 is rotated ninety degrees under the guidance of the positioning pin, and the guide head 406 at one end of the bottom of the guide rod 402 is connected with the limiting groove 201, thereby rotating the valve ball 2 ninety degrees, closing the connecting channel between the valve ball 2 and the valve seat 102, and then the guide rod 402 continues to move downward, the sliding block 411 is moved downward by the gland, and the guide column 413 is moved downward, the inclined surface at one side of the bottom of the guide column 413 contacts the connecting arm 202, the inclined surface at one side of the bottom of the guide column 413 forces the connecting arm 202 to move horizontally to one side, thereby moving the bottom of the valve ball 2 horizontally, and the guide head 406 at the bottom of the guide rod 402 contacts the top of the limiting groove 201, forcing the limiting groove 201 to move the top end of the valve ball 2 horizontally to one side, and the bottom and top of the valve ball 2 are moved horizontally to one side synchronously under the guidance, the sealing surface 203 of the valve ball 2 uniformly presses the first sealing ring 104 of the sealing seat 103, the poor sealing of the bottom of the valve ball 2 of the traditional track 403 ball valve is reduced, the better sealing is maintained, the valve ball 2 can maintain good sealing effect after being worn, and the valve can be used in high-frequency opening and closing.

[0036] Implementation:3:

[0037] Please refer to Figures 1-8The technical scheme is provided by the embodiment of the application, the sealing assembly 3 comprises two inner copper pipes 301, one end of the two inner copper pipes 301 is respectively inserted into the inner part of the valve seat 102 and the connecting seat 101, and the outer wall of the inner copper pipe 301 is tightly attached to the inner wall of the valve seat 102 and the connecting seat 101, the outer wall of the inner copper pipe 301 is connected with the sealing gasket 302, the sealing gasket 302 is provided with two sealing gaskets 302, and the two sealing gaskets 302 are respectively arranged at one end of the valve seat 102 and the connecting seat 101, and the two sealing gaskets 302 are attached to the surface of the flange 305, the two sides of the sealing gasket 302 are provided with the second sealing ring 304, the outer side of the sealing gasket 302 is connected with the outer copper pipe 303, and the inner wall of the outer copper pipe 303 is attached to the outer wall of the flange 305; the inner copper pipe 301, the sealing gasket 302 and the outer copper pipe 303 are integrated and are made of copper, and the surface of the outer copper pipe 303 is provided with an annular groove, and the grooves are distributed in a spaced manner.

[0038] When the valve and the external pipeline connection part are affected by high temperature, the sealing gasket 302 and the inner copper pipe 301 are expanded under the action of high temperature, the connecting pipe is expanded between the valve seat 102 and the flange 305, the sealing property between the valve seat and the flange 305 is further improved under the action of high temperature, the inner copper pipe 301 is further attached to the inner wall of the valve seat 102 after being expanded by heat, the sealing property between the inner copper pipe 301 and the valve seat 102 is further improved, the influence of the sealing property caused by the influence of high temperature on the valve and the pipeline connection part is reduced, when the temperature decreases, the outer copper pipe 303 is contracted, the inner wall surface of the outer copper pipe 303 is further attached to the outer wall surface of the valve body 1 and the flange 305, the sealing property between the valve body 1 and the flange 305 is improved, and the valve can maintain good sealing property with the external pipeline connection part under high temperature and low temperature.

[0039] The working process of the double-track 403 ball valve is as follows:

[0040] The valve is opened:

[0041] The hand wheel 5 drives the threaded rod 401 in the transmission mechanism 4 to rotate.

[0042] The threaded rod 401 moves upward through the threads on the outer wall, and then drives the guide rod 402 to move upward.

[0043] The movement of the guide rod 402 makes the limiting pin 404 slide in the track 403, when the limiting pin 404 moves to the middle arc part of the track 403, the guide rod 402 rotates by a certain angle under the guidance of the limiting pin 404.

[0044] The rotation of the guide rod 402 drives the valve ball 2 to rotate, and the connecting passage between the valve ball 2 and the valve seat 102 is opened, and the medium flow passage is opened.

[0045] Valve closing:

[0046] The hand wheel 5 is rotated, the hand wheel 5 drives the threaded rod 401 to rotate, and the threaded rod 401 moves downward through the threads of the outer wall.

[0047] The guide rod 402 moves downward, and the limit pin 404 slides in the track 403. When the limit pin 404 moves to the middle arc part of the track 403, the guide rod 402 rotates by a certain angle.

[0048] The guide head 406 at the bottom of the guide rod 402 is connected with the limit slot 201 on the valve ball 2, and drives the valve ball 2 to rotate, so that the connecting passage between the valve ball 2 and the valve seat 102 is closed.

[0049] As the guide rod 402 continues to move downward, the guide rod 402 drives the sliding block 411 to move downward through the pressing block 410.

[0050] The sliding block 411 drives the guide column 413 to move downward, and the inclined surface at the bottom of the guide column 413 contacts the connecting arm 202 at the bottom of the valve ball 2, forcing the connecting arm 202 to move horizontally to one side, and driving the bottom of the valve ball 2 to move horizontally.

[0051] At the same time, the guide head 406 at the bottom of the guide rod 402 contacts the top of the limit slot 201, forcing the limit slot 201 to drive the top end of the valve ball 2 to move horizontally to one side.

[0052] Through the guiding effect, the bottom and top of the valve ball 2 are simultaneously moved horizontally to one side, so that the sealing surface 203 of the valve ball 2 is uniformly pressed on the first sealing ring 104 of the sealing seat 103, and the valve is closed and good sealing is achieved.

[0053] During the entire working process, the cooperation of the transmission mechanism 4 and the valve ball 2, and the action of the sealing assembly 3, ensure that the valve can realize reliable sealing and stable opening and closing operation under high-frequency opening and closing working condition

[0054] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the illustrative embodiments shown and described herein. Rather, this application is capable of operating within a further range of conditions and environments than those specifically described herein, and further modifications can be made without departing from the spirit or scope of the application. Accordingly, the description is to be construed as illustrative only and not restrictive of the broad disclosure or application of the application. The specification and drawings are, accordingly, to be regarded simply as illustrative and with the scope of the application being measured by the appended claims, and not with the specification. No admission is made that any reference constitutes prior art. It is my intent, therefore, to be limited only as appears in the following claims.

[0055] Furthermore, it should be understood that although the description above relates to embodiments, not every embodiment contains only one independent technical solution, and the description above is only for the sake of clarity, and those skilled in the art should understand the description as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A double-track ball valve adapted to high frequency opening and closing, characterized in that, Include: Valve body (1), which is provided with a medium flow channel inside; Valve ball (2), which is installed inside the valve body (1), and the medium flow channel is opened and closed by rotating cooperation; Sealing assembly (3), installed at both ends of the valve body (1), used for connecting the valve body (1) with the external pipeline; Transmission mechanism (4), connected with the valve ball (2), used for controlling the opening and closing of the valve ball (2); Hand wheel (5), located at the top of the transmission mechanism (4), connected with the transmission mechanism (4); The bottom and top of the valve ball (2) are provided with protruding structures, one side of the valve ball (2) is provided with a sealing surface (203), one end of the top of the valve ball (2) is provided with a rectangular limiting groove (201), and two connecting arms (202) are arranged at one end of the bottom of the valve ball (2), one end of the connecting arm (202) is connected with the valve ball (2), and the connecting arm (202) is slidably connected with the valve seat (102); The transmission mechanism (4) includes a threaded rod (401), one end of the bottom of the threaded rod (401) is rotatably connected with a guide rod (402), two tracks (403) are symmetrically arranged on the outer wall surface of the guide rod (402), the limiting pin (404) is slidably connected with the track (403), and the pressure block (410) is fixedly installed on the outer part of the guide rod (402) through the connecting screw (405); One end of the bottom of the guide rod (402) is provided with a guide head (406), one side of the guide head (406) is in an inclined surface structure, the outer wall of the guide head (406) is in sliding contact with the inner wall of the limiting groove (201), the limiting pin (404) is connected with the connecting cover (407), the connecting cover (407) is fixedly installed on the top of the valve seat (102) through bolts, the connecting cover (407) is connected with the upper end cover (408) through bolts, the upper end cover (408) is connected with the sealing cover (409) through bolts, the sealing cover (409) is threadedly connected with the threaded rod (401); The outer wall of the guide rod (402) is slidably connected with the sliding block (411), the guide column (413) is connected with the sliding block (411) at both ends through bolts, the guide column (413) is slidably connected with the inside of the valve seat (102), the spring (412) is arranged at the top of the guide column (413), and one end of the bottom of the guide column (413) is in an inclined surface structure.

2. The double-track ball valve of claim 1, wherein: The valve body (1) includes a connecting seat (101), one end of the connecting seat (101) is connected with the valve seat (102) through bolts, the inside of the valve seat (102) is provided with a sealing seat (103), the sealing seat (103) protrudes from the inner wall surface of the valve seat (102), the first sealing ring (104) is embedded on the surface of the sealing seat (103), the first sealing ring (104) is attached to the surface of the valve ball (2), recesses are arranged on the top surface and the bottom surface of the inside of the valve seat (102), and the recesses arranged on the top surface and the bottom surface of the inside of the valve seat (102) are slidably connected with the valve ball (2), and the valve ball (2) is aligned with the channels at both ends of the valve seat (102) through rotating cooperation.

3. The dual-track ball valve according to claim 1, wherein: The sealing assembly (3) comprises inner copper pipes (301), two of which are arranged with one end penetrating into the valve seat (102) and the connecting seat (101) respectively, and the outer wall of the inner copper pipe (301) is tightly attached to the inner wall of the valve seat (102) and the connecting seat (101); the outer wall of the inner copper pipe (301) is connected with a sealing gasket (302), two of which are arranged at one end of the valve seat (102) and the connecting seat (101) respectively, and both of the two sealing gaskets (302) are attached to the surface of a flange (305); the two sides of the sealing gasket (302) are provided with second sealing rings (304), and the outer side of the sealing gasket (302) is connected with an outer copper pipe (303), and the inner wall of the outer copper pipe (303) is attached to the outer wall of the flange (305).

4. The dual-track ball valve according to claim 3, wherein: The inner copper pipe (301), the sealing gasket (302) and the outer copper pipe (303) are of an integrated structure and are all made of copper; the surface of the outer copper pipe (303) is provided with annular grooves, and the grooves are distributed at equal intervals.

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