A high-temperature resistant, low-friction, high-pressure hard-sealed ball valve

Abstract

The present invention discloses a high-temperature resistant, friction-coefficient, low-pressure, hard-sealed ball valve, which relates to the technical field of ball valves; a first ball valve body is provided inside the valve body, and a first connecting shaft is connected to the top of the first ball valve body, a second connecting shaft is connected to the top of the first connecting shaft, and a group of sealing rings are provided on the left and right sides of the first ball valve body, and a first sealing gasket is provided on the bottom of the first ball valve body; a pressure relief mechanism is provided inside the fixed cylinder, and the pressure relief mechanism can be connected to the second connecting shaft, an outlet mechanism is provided at the bottom of the valve body, and sealing mechanisms are provided on both sides of the valve body. The first connecting shaft is driven to rotate by the second connecting shaft, which can cause the first connecting shaft to drive the first ball valve body to rotate, causing the first connecting shaft to drive the pressure relief mechanism to open, thereby discharging part of the pressure and temperature inside the valve body through the pressure relief mechanism, so that when the ball valve is in operation, pressure generated by high temperature will not accumulate inside the valve body.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, in particular to a high-temperature resistant, low-friction-coefficient, and high-pressure hard-sealed ball valve. Background Art

[0002] A ball valve is a valve that consists of an opening and closing member (a spherical hollow object) that is driven by a valve stem and rotates around the axis of the ball valve. It can be used to regulate and control fluids. The main function of a ball valve is to cut off, distribute or change the flow direction of the medium. It is suitable for use as a switch. Ball valves are widely used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries. However, existing ball valves have some shortcomings, such as:

[0003] Application number: CN202410752987.6 A hard-seal ball valve, which blocks the fluid entering the valve ball by providing a buffer component to prevent the water flow from directly acting on the valve ball. This reduces the impact force of the fluid on the valve ball when the hard-seal ball valve is opened, thereby reducing the wear of the valve seat and the valve ball, and improving the service life of the hard-seal ball valve. At the same time, the buffer component is provided inside the valve body to reduce the risk of leakage of the hard-seal ball valve;

[0004] However, in actual use, when the ball valve transmits high-temperature fluids or gases, the high temperature and high pressure may cause deformation of the valve body or damage to the ball inside the valve body due to excessive pressure and difficulty in pressure relief, thereby reducing the durability of the device during use.

[0005] Therefore, we proposed a high temperature resistant, low friction coefficient, high pressure hard seal ball valve to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-temperature resistant, low-friction coefficient, high-pressure hard-sealed ball valve to solve the problem raised in the above background technology that most ball valves on the market may experience high temperature and high pressure caused by high temperature when transmitting fluids or gases at higher temperatures, resulting in deformation of the valve body or excessive pressure that makes it difficult to release pressure, causing damage to the ball inside the valve body, thereby reducing the durability of the equipment during use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant, low-friction coefficient, high-pressure hard-sealed ball valve, comprising a valve body and a fixed cylinder disposed at the top of the valve body; a first ball valve body is disposed within the valve body, and a first connecting shaft is connected to the top of the first ball valve body, a second connecting shaft is connected to the top of the first connecting shaft, and a set of sealing rings are respectively disposed on the left and right sides of the first ball valve body, and the sealing rings are fixedly connected to the interior of the valve body; a first sealing gasket is disposed at the bottom of the first ball valve body, and the first sealing gasket is fixedly connected to the bottom of the valve body;

[0008] A pressure relief mechanism is provided inside the fixed cylinder, and the pressure relief mechanism can be connected to the second connecting shaft, and the bottom of the pressure relief mechanism is connected to the top of the valve body, the bottom of the valve body is provided with an outlet mechanism, and sealing mechanisms are provided on both sides of the valve body.

[0009] By driving the first connecting shaft to rotate through the second connecting shaft, the first connecting shaft can drive the first ball valve body to rotate, causing the first ball valve body to rotate, thereby opening the interior of the valve body, and when the first connecting shaft rotates, the first connecting shaft will also drive the pressure relief mechanism to open, thereby discharging part of the pressure and temperature inside the valve body through the pressure relief mechanism, so that when the ball valve is in operation, the pressure generated by high temperature will not accumulate inside the valve body.

[0010] As a preferred technical solution of the present invention, a spring shaft is provided at the bottom of the first connecting shaft, and a retaining plate is connected to the outside of the spring shaft. The first connecting shaft is snap-connected to the top of the first ball valve body through the retaining plate. A sealing layer is provided at the bottom of the first connecting shaft, and the sealing layer is sealed to the top of the valve body.

[0011] A clamping block is provided on the top of the first connecting shaft, and the first connecting shaft is fixedly connected to the second connecting shaft through the clamping block.

[0012] The above technical solution can make it more convenient for the first connecting shaft to be connected to or disassembled from the first ball valve body, thereby increasing the stability of the ball valve during operation, and can make it more convenient for the second connecting shaft to drive the first connecting shaft to rotate, thereby increasing the controllability of the equipment.

[0013] As a preferred technical solution of the present invention, a first gear is provided on the outside of the second connecting shaft, and the pressure relief mechanism includes a second gear, and the second gear is meshed with the first gear, a threaded shaft is connected to the bottom of the second gear, and a threaded sleeve is provided on the outside of the threaded shaft, and a sealing block is provided at the bottom of the threaded sleeve, a pressure relief pipe is provided at the bottom of the fixed cylinder, and the bottom of the pressure relief pipe is connected to the inside of the valve body, and a pressure relief valve is connected to the rear end of the pressure relief pipe, and the sealing block is located inside the pressure relief pipe.

[0014] The above technical solution can be used to drive the second gear to rotate through the first gear on the outside of the first connecting shaft, and the second gear can drive the threaded shaft to rotate, so that the threaded shaft drives the threaded sleeve to slide, so that the sealing block at the bottom of the threaded sleeve can open the gap inside the pressure relief pipe 17, so that part of the pressure inside the valve body is discharged through the pressure relief pipe and the pressure relief valve, thereby increasing the pressure resistance of the ball valve when in use.

[0015] As a preferred technical solution of the present invention, a first connecting flange is provided on the top of the fixed cylinder, and a second connecting flange is provided on the top of the first connecting flange, and the second connecting flange is fixedly connected to the first connecting flange by a first fixing bolt, and a handle is provided on the top of the second connecting flange, and the bottom of the handle is fixedly connected to the second connecting shaft.

[0016] The adoption of the above technical solution can make it more convenient to seal the top of the fixed cylinder, thereby improving the sealing performance of the device during use, and can enable the user to protect and seal the top of the fixed cylinder through the first connecting flange and the second connecting flange when turning the handle, thereby increasing the protectiveness of the device.

[0017] As a preferred technical solution of the present invention, the fixed cylinder is sealed and connected to the top of the valve body, and an outlet valve is provided at the bottom of the valve body, and a closed ring is connected to the bottom of the outlet valve, and the bottom of the closed ring is connected to the closing valve.

[0018] The adoption of the above technical solution can make the ball valve more convenient when adjusting the position of the first sealing gasket or releasing liquid or gas, thereby increasing the detachability of the device.

[0019] As a preferred technical solution of the present invention, the surface of the valve body is provided with an anti-corrosion layer, and the sealing mechanism includes a sealing cover, and the sealing cover is connected to the left and right sides of the valve body, the right side of the sealing cover is connected to a sealing pipe, and the right side of the sealing pipe is connected to a second fixing bolt and a second sealing gasket, and the sealing pipe is fixedly connected to the second sealing gasket by the second fixing bolt, and a connecting pipe is provided on the right side of the second sealing gasket;

[0020] A first sealing ring is provided at the bottom of the connecting pipe, and a second sealing ring is connected to the top of the first sealing ring, and the first sealing ring and the second sealing ring are rotatably connected through a hinge. A sealing bolt is provided at the rear end of the second sealing ring, and the second sealing ring is sealed with the first sealing ring through the sealing bolt.

[0021] The above technical solution enables the valve body to be connected to other pipelines through the sealing mechanism when connected to other equipment, and the interface of the other pipeline is sealed by the first sealing ring and the second sealing ring so as to dock with the connecting pipe.

[0022] As a preferred technical solution of the present invention, a sealing groove is provided inside the first sealing ring, and a sealing groove is provided inside the second sealing ring, and the first sealing ring and the second sealing ring are sealed and connected to the connecting pipe through the sealing groove.

[0023] The adoption of the above technical solution can make it more convenient for the first sealing ring and the second sealing ring to seal the connecting pipe or other pipelines, thereby improving the sealing performance of the equipment.

[0024] As a preferred technical solution of the present invention, the front end of the valve body is connected to an external pipe, and the front end of the external pipe is also provided with a sealing mechanism, and the bottom of the first connecting shaft is connected to the second ball valve body.

[0025] The adoption of the above technical solution can make the ball valve more convenient when connecting two sets of pipelines, thereby increasing the practicality of the equipment.

[0026] As a preferred technical solution of the present invention, the second ball valve body has three outlets, wherein the three outlets of the second ball valve body are connected in a T-shape, and the first ball valve body has two outlets in a straight line shape.

[0027] The adoption of the above technical solution can make it more convenient for the connecting shaft to drive the second ball valve body to perform rotational adjustment, thereby increasing the adjustment performance of the ball valve.

[0028] Compared with the prior art, the present invention has the following beneficial effects: the first connecting shaft is driven to rotate by the second connecting shaft, so that the first connecting shaft can drive the first ball valve body to rotate, so that the first ball valve body rotates, thereby opening the interior of the valve body; and when the first connecting shaft rotates, the first connecting shaft also drives the pressure relief mechanism to open, so that part of the pressure and temperature inside the valve body is discharged through the pressure relief mechanism, so that when the ball valve is in operation, pressure generated by high temperature will not accumulate inside the valve body;

[0029] The first gear on the outside of the first connecting shaft drives the second gear to rotate, which can cause the second gear to drive the threaded shaft to rotate, thereby causing the threaded shaft to drive the threaded sleeve to slide, so that the sealing block at the bottom of the threaded sleeve can open the gap inside the pressure relief pipe 17, so that part of the pressure inside the valve body is discharged through the pressure relief pipe and the pressure relief valve, thereby increasing the pressure resistance of the ball valve when in use;

[0030] Furthermore, by providing the sealing mechanism, the valve body can be connected to other pipelines through the sealing mechanism when connected to other equipment, and the interface of the other pipeline is sealed by the first sealing ring and the second sealing ring so as to dock with the connecting pipe;

[0031] Furthermore, by connecting the external pipe to the valve body, the ball valve can be more convenient when connecting two sets of pipelines, thereby making it more convenient for the valve body to transmit media to two sets of external devices, thereby increasing the practicality and controllability of the device;

[0032] Furthermore, by making the three outlets of the second ball valve body into a T-shaped connection, the connecting shaft can be more convenient when driving the second ball valve body to perform rotational adjustment, thereby increasing the adjustment performance of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the facade structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the cross-sectional elevation structure of the present invention;

[0035] Figure 3 It is a schematic diagram of the cross-sectional elevation structure of the fixing cylinder of the present invention;

[0036] Figure 4 This is a schematic elevational structural diagram of a first ball valve body of the present invention;

[0037] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0038] Figure 6 is a schematic elevational structural diagram of the second gear of the present invention;

[0039] Figure 7 It is a schematic diagram of the cross-sectional elevation structure of the valve body of the present invention;

[0040] Figure 8 This is a schematic diagram of the elevation structure of the handle of the present invention;

[0041] Figure 9 It is a schematic elevational structural diagram of the sealing connection cover of the present invention;

[0042] Figure 10 This is a schematic diagram of the elevation structure of the first sealing sheet and the second sealing sheet of the present invention;

[0043] Figure 11 This is a schematic diagram of the elevation structure of Example 2 of the present invention;

[0044] Figure 12 This is a schematic diagram of the top cross-sectional elevation structure of Example 2 of the present invention;

[0045] Figure 13 This is a schematic elevational structural diagram of the second ball valve body of Example 2 of the present invention.

[0046] In the figure: 1. valve body; 2. fixing cylinder; 3. first ball valve body; 4. first connecting shaft; 5. sealing layer; 6. spring shaft; 7. retaining plate; 8. second connecting shaft; 9. handle; 10. first connecting flange; 11. second connecting flange; 12. first fixing bolt; 13. first gear; 14. second gear; 15. threaded shaft; 16. threaded sleeve; 17. pressure relief pipe; 18. pressure relief valve; 19. sealing ring; 20. first sealing gasket; 21. outlet valve; 22. closing ring; 23. closing valve; 24. sealing cover; 25. second fixing bolt; 26. sealing pipe; 27. second sealing gasket; 28. connecting pipe; 29. ​​first sealing ring; 30. second sealing ring; 31. sealing bolt; 32. external pipe; 33. second ball valve body. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Example 1:

[0049] See also Figure 1-10 The present invention provides a technical solution: a high-temperature resistant, low-friction coefficient, high-pressure hard-sealed ball valve, comprising a valve body 1 and a fixed cylinder 2 arranged on the top of the valve body 1; a first ball valve body 3 is provided inside the valve body 1, and a first connecting shaft 4 is connected to the top of the first ball valve body 3, and a second connecting shaft 8 is connected to the top of the first connecting shaft 4, and a set of sealing rings 19 are provided on the left and right sides of the first ball valve body 3, and the sealing rings 19 are fixedly connected to the inside of the valve body 1, and a first sealing gasket 20 is provided at the bottom of the first ball valve body 3, and the first sealing gasket 20 is fixedly connected to the bottom of the valve body 1;

[0050] A pressure relief mechanism is provided inside the fixed cylinder 2, and the pressure relief mechanism can be connected to the second connecting shaft 8, and the bottom of the pressure relief mechanism is connected to the top of the valve body 1. The bottom of the valve body 1 is provided with an outlet mechanism, and the left and right sides of the valve body 1 are provided with sealing mechanisms;

[0051] The first connecting shaft 4 is fixedly connected to the first ball valve body 3 inside the valve body 1, so that the first ball valve body 3 can be located inside the valve body 1. Then, the top of the first connecting shaft 4 is connected to the second connecting shaft 8. The interfaces at both ends of the valve body 1 are connected to the sealing mechanism, so that it can be connected to other pipelines.

[0052] A spring shaft 6 is provided at the bottom of the first connecting shaft 4, and a retaining plate 7 is connected to the outside of the spring shaft 6. The first connecting shaft 4 is snap-connected to the top of the first ball valve body 3 via the retaining plate 7. A sealing layer 5 is provided at the bottom of the first connecting shaft 4, and the sealing layer 5 is sealed to the top of the valve body 1. A clamping block is provided at the top of the first connecting shaft 4, and the first connecting shaft 4 is snap-connected to the second connecting shaft 8 via the clamping block.

[0053] A first gear 13 is provided on the outside of the second connecting shaft 8, and the pressure relief mechanism includes a second gear 14, and the second gear 14 is meshed with the first gear 13. A threaded shaft 15 is connected to the bottom of the second gear 14, and a threaded sleeve 16 is provided on the outside of the threaded shaft 15, and a sealing block is provided at the bottom of the threaded sleeve 16. A pressure relief pipe 17 is provided at the bottom of the fixed cylinder 2, and the bottom of the pressure relief pipe 17 is connected to the inside of the valve body 1, and a pressure relief valve 18 is connected to the rear end of the pressure relief pipe 17, and the sealing block is located inside the pressure relief pipe 17;

[0054] When the handle 9 is turned to twist the second connecting shaft 8, the second connecting shaft 8 will drive the first connecting shaft 4 to rotate, so that the first connecting shaft 4 drives the first ball valve body 3 to rotate, thereby adjusting the position of the first ball valve body 3 inside the valve body 1, and through the first gear 13 provided on the outer side of the second connecting shaft 8, the second connecting shaft 8 can drive the first gear 13 to rotate when rotating, so that the first gear 13 drives the second gear 14 to rotate, so that the second gear 14 drives the threaded shaft 15 to rotate, so that the threaded shaft 15 drives the threaded sleeve 16 to rise and fall, so that the threaded sleeve 16 drives the sealing block at the bottom to rise and fall, thereby opening or closing the gap inside the pressure relief pipe 17. When the gap inside the pressure relief pipe 17 is opened, part of the pressure will be transmitted to the inside of the pressure relief pipe 17, and then discharged through the pressure relief valve 18;

[0055] A first connecting flange 10 is provided at the top of the fixed cylinder 2, and a second connecting flange 11 is provided at the top of the first connecting flange 10. The second connecting flange 11 is fixedly connected to the first connecting flange 10 via a first fixing bolt 12. A handle 9 is provided at the top of the second connecting flange 11, and the bottom of the handle 9 is fixedly connected to the second connecting shaft 8. The fixed cylinder 2 is sealedly connected to the top of the valve body 1, and an outlet valve 21 is provided at the bottom of the valve body 1. A closing ring 22 is connected to the bottom of the outlet valve 21, and a closing valve 23 is connected to the bottom of the closing ring 22.

[0056] The surface of the valve body 1 is provided with an anti-corrosion layer, and the sealing mechanism includes a sealing cover 24, and the sealing cover 24 is connected to the left and right sides of the valve body 1. A sealing pipe 26 is connected to the right side of the sealing cover 24, and a second fixing bolt 25 and a second sealing gasket 27 are connected to the right side of the sealing pipe 26. The sealing pipe 26 is fixedly connected to the second sealing gasket 27 by the second fixing bolt 25, and a connecting pipe 28 is provided on the right side of the second sealing gasket 27.

[0057] A first sealing ring 29 is provided at the bottom of the connecting pipe 28, and a second sealing ring 30 is connected to the top of the first sealing ring 29. The first sealing ring 29 and the second sealing ring 30 are rotatably connected by a hinge. A sealing bolt 31 is provided at the rear end of the second sealing ring 30, and the second sealing ring 30 is sealed to the first sealing ring 29 via the sealing bolt 31.

[0058] A sealing groove is provided inside the first sealing ring 29, and a sealing groove is provided inside the second sealing ring 30, and the first sealing ring 29 and the second sealing ring 30 are sealedly connected to the connecting pipe 28 through the sealing grooves;

[0059] When the first ball valve body 3 rotates inside the valve body 1, it does not directly contact the valve body 1, but fits with the sealing rings 19 provided on the left and right sides of the valve body 1, and fits with the first sealing gasket 20 at the bottom. As a result, when the first ball valve body 3 rotates, the friction between the first ball valve body 3 and the valve body 1 is reduced, thereby avoiding wear on the inside of the valve body 1 or the surface of the first ball valve body 3. When the first ball valve body 3 rotates, it only generates friction with the sealing ring 19 and the first sealing gasket 20, thereby reducing the friction intensity to which the first ball valve body 3 is subjected during rotation.

[0060] When the valve body 1 is connected to the sealing mechanism, it can be sealed and connected to the sealing cover 24, and the sealing tube 26 and the second sealing gasket 27 are fixed and sealed by the second fixing bolt 25, and then the connecting pipe 28 is fitted with the external equipment to be connected, and then connected by the first sealing ring 29 and the second sealing ring 30, and the sealing grooves provided inside the first sealing ring 29 and the second sealing ring 30 are sealed and connected to the connecting pipe 28 and the external equipment, and then the first sealing ring 29 and the second sealing ring 30 are fixed by the sealing bolt 31.

[0061] Example 2:

[0062] like Figure 11-13 As shown, the difference between this embodiment and embodiment 1 is that: the front end of the valve body 1 is connected to an external pipe 32, and the front end of the external pipe 32 is also provided with a sealing mechanism, and the bottom of the first connecting shaft 4 is connected to the second ball valve body 33; the second ball valve body 33 has three outlets, wherein the three outlets of the second ball valve body 33 are connected in a T-shaped shape, and the first ball valve body 3 has two outlets in a straight line shape;

[0063] When the valve body 1 needs to be connected to two groups of external equipment, an external pipe 32 can be connected to the outside of the valve body 1, and then the first ball valve body 3 can be replaced with the second ball valve body 33, so that the three-way outlet inside the second ball valve body 33 can transmit medium to the two groups of external equipment at the same time, thereby increasing the transmission performance of the equipment, so that the valve body 1 can be better adjusted when transmitting medium to the two groups of external equipment, thereby increasing the adjustable performance of the ball valve.

[0064] Working principle: When using a high-temperature resistant, low-friction-coefficient, high-pressure hard-sealed ball valve, first, the first connecting shaft 4 is fixedly connected to the first ball valve body 3 inside the valve body 1, so that the first ball valve body 3 can be located inside the valve body 1. Then, the top of the first connecting shaft 4 is connected to the second connecting shaft 8. The interfaces at both ends of the valve body 1 are connected to the sealing mechanism, so that it can be connected to other pipelines.

[0065] When the user twists the second connecting shaft 8 through the handle 9, the second connecting shaft 8 will drive the first connecting shaft 4 to rotate, so that the first connecting shaft 4 drives the first ball valve body 3 to rotate, thereby adjusting the position of the first ball valve body 3 inside the valve body 1, and through the first gear 13 provided on the outer side of the second connecting shaft 8, the second connecting shaft 8 can drive the first gear 13 to rotate when rotating, so that the first gear 13 drives the second gear 14 to rotate, so that the second gear 14 drives the threaded shaft 15 to rotate, so that the threaded shaft 15 drives the threaded sleeve 16 to rise and fall, so that the threaded sleeve 16 drives the sealing block at the bottom to rise and fall, thereby opening or closing the gap inside the pressure relief pipe 17. When the gap inside the pressure relief pipe 17 is opened, part of the pressure will be transmitted to the inside of the pressure relief pipe 17, and then discharged through the pressure relief valve 18;

[0066] When the first ball valve body 3 rotates inside the valve body 1, it does not directly contact the valve body 1, but instead fits with the sealing rings 19 provided on the left and right sides of the valve body 1, and fits with the first sealing gasket 20 at the bottom. This reduces the friction between the first ball valve body 3 and the valve body 1 when the first ball valve body 3 rotates, thereby avoiding wear on the inside of the valve body 1 or the surface of the first ball valve body 3.

[0067] When the valve body 1 is connected to the sealing mechanism, it can be sealed and connected to the sealing cover 24, and the sealing tube 26 and the second sealing gasket 27 are fixed and sealed by the second fixing bolt 25, and then the connecting pipe 28 is fitted with the external equipment to be connected, and then connected by the first sealing ring 29 and the second sealing ring 30, and the sealing grooves provided inside the first sealing ring 29 and the second sealing ring 30 are sealed and connected to the connecting pipe 28 and the external equipment, and then the first sealing ring 29 and the second sealing ring 30 are fixed by the sealing bolt 31.

[0068] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A high-temperature resistant, low-friction-coefficient, high-pressure hard-sealed ball valve, comprising a valve body (1) and a fixing cylinder (2) arranged on the top of the valve body (1); characterized in that: The valve body (1) is provided with a first ball valve body (3) inside, and the top of the first ball valve body (3) is connected to a first connecting shaft (4), the top of the first connecting shaft (4) is connected to a second connecting shaft (8), and a set of sealing rings (19) are provided on the left and right sides of the first ball valve body (3), and the sealing rings (19) are fixedly connected to the inside of the valve body (1), and a first sealing gasket (20) is provided at the bottom of the first ball valve body (3), and the first sealing gasket (20) is fixedly connected to the bottom of the valve body (1); A pressure relief mechanism is provided inside the fixed cylinder (2), and the pressure relief mechanism is connectable to the second connecting shaft (8), and the bottom of the pressure relief mechanism is connected to the top of the valve body (1), an outlet mechanism is provided at the bottom of the valve body (1), and sealing mechanisms are provided on both the left and right sides of the valve body (1); A spring shaft (6) is provided at the bottom of the first connecting shaft (4), and a retaining plate (7) is connected to the outside of the spring shaft (6), and the first connecting shaft (4) is snap-connected to the top of the first ball valve body (3) via the retaining plate (7), and a sealing layer (5) is provided at the bottom of the first connecting shaft (4), and the sealing layer (5) is sealed and connected to the top of the valve body (1); A clamping block is provided on the top of the first connecting shaft (4), and the first connecting shaft (4) is fixedly connected to the second connecting shaft (8) by means of a clamping block; A first gear (13) is provided on the outside of the second connecting shaft (8), and the pressure relief mechanism includes a second gear (14), and the second gear (14) is meshed with the first gear (13), a threaded shaft (15) is connected to the bottom of the second gear (14), and a threaded sleeve (16) is provided on the outside of the threaded shaft (15), and a sealing block is provided at the bottom of the threaded sleeve (16), a pressure relief pipe (17) is provided at the bottom of the fixed cylinder (2), and the bottom of the pressure relief pipe (17) is connected to the inside of the valve body (1), and a pressure relief valve (18) is connected to the rear end of the pressure relief pipe (17), and the sealing block is located inside the pressure relief pipe (17); The surface of the valve body (1) is provided with an anti-corrosion layer, and the sealing mechanism includes a sealing cover (24), and the sealing cover (24) is connected to the left and right sides of the valve body (1), the right side of the sealing cover (24) is connected to a sealing pipe (26), and the right side of the sealing pipe (26) is connected to a second fixing bolt (25) and a second sealing gasket (27), and the sealing pipe (26) is fixedly connected to the second sealing gasket (27) through the second fixing bolt (25), and a connecting pipe (28) is provided on the right side of the second sealing gasket (27); A first sealing ring (29) is provided at the bottom of the connecting pipe (28), and a second sealing ring (30) is connected to the top of the first sealing ring (29), and the first sealing ring (29) and the second sealing ring (30) are rotatably connected via a hinge, a sealing bolt (31) is provided at the rear end of the second sealing ring (30), and the second sealing ring (30) is sealedly connected to the first sealing ring (29) via the sealing bolt (31).

2. The high temperature resistant, low friction coefficient, high pressure hard seal ball valve according to claim 1, characterized in that: A first connecting flange (10) is provided on the top of the fixing cylinder (2), and a second connecting flange (11) is provided on the top of the first connecting flange (10), and the second connecting flange (11) is fixedly connected to the first connecting flange (10) via a first fixing bolt (12), and a handle (9) is provided on the top of the second connecting flange (11), and the bottom of the handle (9) is fixedly connected to the second connecting shaft (8).

3. The high temperature resistant, low friction coefficient, high pressure hard seal ball valve according to claim 2, characterized in that: The fixed cylinder (2) is sealedly connected to the top of the valve body (1), and the bottom of the valve body (1) is provided with an outlet valve (21), and the bottom of the outlet valve (21) is connected to a closing ring (22), and the bottom of the closing ring (22) is connected to a closing valve (23), and a limiting ring is provided inside the fixed cylinder (2), and the fixed cylinder (2) is slidably connected to the threaded sleeve (16) through the limiting ring.

4. The high temperature resistant, low friction coefficient, high pressure hard seal ball valve according to claim 1, characterized in that: A sealing groove is provided inside the first sealing ring (29), and a sealing groove is provided inside the second sealing ring (30), and the first sealing ring (29) and the second sealing ring (30) are sealedly connected to the connecting pipe (28) via the sealing grooves.

5. The high temperature resistant, low friction coefficient, high pressure hard seal ball valve according to claim 1, characterized in that: The front end of the valve body (1) is connected to an external pipe (32), and the front end of the external pipe (32) is also provided with a sealing mechanism, and the bottom of the first connecting shaft (4) is connected to a second ball valve body (33).

6. The high temperature resistant, low friction coefficient, high pressure hard seal ball valve according to claim 5, characterized in that: The second ball valve body (33) has three outlets, wherein the three outlets of the second ball valve body (33) are connected in a T-shaped shape, and the first ball valve body (3) has two outlets in a straight line shape.

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