Hard sealing ball valve with high wear resistance and corrosion resistance

Abstract

The invention is applied to the technical field of valves, and particularly discloses a hard sealing ball valve with high wear resistance and corrosion resistance, which comprises a valve seat, the valve seat is of a hollow sphere structure, a liquid inlet pipe is arranged on the surface of one side of the valve seat in a penetrating manner, a liquid outlet pipe is arranged on the surface of the other side of the valve seat in a penetrating manner, and a valve core is rotatably mounted in the valve seat. According to the hard sealing ball valve with the high abrasion resistance and the high corrosion resistance, the rotating valve element is arranged to be communicated with the liquid inlet pipe and the liquid outlet pipe on the two sides, the fluid conveying process is achieved, a water passing channel in the valve element is cylindrical, the tail end of the liquid inlet pipe is provided with an open horn shape to be connected with the water passing channel of the valve element, and when fluid enters the valve element from the liquid inlet pipe, the fluid flows into the valve element; due to the fact that the pipe diameter is increased, the flow speed is slowed down, impact on the valve element is reduced, the liquid outlet pipe on the other side is connected with the valve element in a reverse horn shape, the flow speed is increased when fluid flows into the liquid outlet pipe from the valve element, and the conveying speed of the fluid is guaranteed while the service life of the valve element is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a hard-sealed ball valve with high wear resistance and corrosion resistance. Background Art

[0002] A valve is a device used to control the flow of fluid in a pipeline system. It can cut off the fluid, regulate flow and pressure in the pipeline. Different types of valves can play different roles and are used in different applications. Ball valve is one of them. The valve stem is used to drive the valve core to rotate to open and close the valve. Due to the simple structure, small size and ability to adapt to complex working conditions, the ball valve has a wide range of uses. The hard-sealed ball valve uses a metal valve seat to match the ball valve core and has a longer service life.

[0003] During the use of the current ball valve, the valve stem and the valve seat rub against each other when the ball valve core rotates, which causes wear of the valve stem and the valve seat during long-term use. As time goes by, the wear gradually occurs, affecting the rotation accuracy of the ball valve core driven by the valve stem, thereby affecting the sealing performance and service life of the valve. Summary of the invention

[0004] The object of the present invention is to provide a hard-sealed ball valve with high wear and corrosion resistance, so as to solve the problem in the background technology mentioned above that after the ball valve is used for a long time, the valve stem wears and affects the valve accuracy.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hard-sealed ball valve with high wear resistance and corrosion resistance, comprising a valve seat, the valve seat being a hollow spherical structure, a liquid inlet pipe being penetrated through the surface of one side of the valve seat, a liquid outlet pipe being penetrated through the surface of the other side of the valve seat, a valve core being rotatably installed inside the valve seat, the valve core being a spherical structure, and a cylindrical water passage being penetrated through the surface of the valve core, two ends of the water passage inside the valve core being aligned with the liquid inlet pipe and the liquid outlet pipe respectively, an upper valve stem being fixedly installed on the upper surface of the valve core, the upper valve stem penetrating the upper surface of the valve seat, and the outer surface of the upper valve stem being rotatably connected to the surface of the valve seat, and the outer surface of the valve seat being fixed An upper support seat is connected, and the upper support seat is a hollow cylindrical structure with an open lower surface. The upper end of the upper valve stem is located inside the upper support seat. A driving motor is fixedly installed on the upper surface of the upper support seat. The output end of the driving motor passes through the surface of the upper support seat and is fixedly connected to the upper valve stem. The inner wall of the liquid inlet pipe on the side close to the valve core is set as an open trumpet-shaped structure, and the inner wall of the liquid outlet pipe on the side close to the valve core is set as a trumpet shape. The direction of the trumpet shape in the liquid outlet pipe is opposite to that in the liquid inlet pipe. A guide structure is set below the valve core, which can support and guide the valve core during its rotation process, thereby preventing the valve core from being misplaced after a long period of rotation.

[0006] Preferably, the guide structure includes a lower valve stem, which is a cylindrical structure. The upper end of the lower valve stem is fixedly mounted on the lower surface of the valve core, the lower end of the lower valve stem penetrates the lower surface of the valve seat, and the lower valve stem is rotatably connected to the surface of the valve seat, the lower end of the lower valve stem is inserted into the interior of the lower support seat, the lower support seat is a hollow cylindrical structure with an open upper surface, the upper surface of the lower support seat is fixedly connected to the lower surface of the valve seat, and the lower support seat is embedded and fixed on the upper surface of the base.

[0007] By adopting the above technical solution, the guide structure can be used to support and guide the valve core during its rotation, thereby preventing the valve core from deviating during rotation.

[0008] Preferably, a slide rail is fixedly installed on the inner wall of the lower support seat, the slide rail is a circular ring structure, and a T-shaped slide track is arranged inside the slide rail, a slider is slidably connected inside the slide rail, the cross-section of the slider is T-shaped, and the surface of the slider is fixedly connected to the outer surface of the lower valve stem through a bracket, and four sliders are distributed in a ring on the outer surface of the lower valve stem.

[0009] By adopting the above technical solution, the rotation process of the lower valve stem can be guided by utilizing the action force between the slider arranged on the outer surface of the lower valve stem and the slide rail.

[0010] Preferably, a support structure is provided on the surface of the lower valve stem, and the support structure reduces the wear of the lower valve stem during rotation through the suspension effect of magnetic force.

[0011] By adopting the above technical solution and utilizing the support structure, the wear of the lower valve stem during the rotation process can be reduced.

[0012] Preferably, the supporting structure includes a supporting block, which is embedded and fixed in the bottom surface of the lower supporting seat, the supporting block is a hollow structure with an open upper surface, and the supporting block wraps the lower end of the lower valve stem therein, and there is no contact between the inner wall of the supporting block and the outer surface of the lower valve stem, an upper magnetic ring is fixedly installed on the lower surface of the lower valve stem, a lower magnetic ring is arranged at a corresponding position below the upper magnetic ring, and the lower magnetic ring is fixedly installed on the bottom surface of the supporting block, the magnetic poles of the upper magnetic ring and the lower magnetic ring repel each other, a round rod is arranged on the inner surface of the lower magnetic ring, the lower end of the round rod at the lower magnetic ring is fixedly connected to the bottom surface of the supporting block, and the upper end of the round rod at the lower magnetic ring is inserted into the inner surface of the upper magnetic ring.

[0013] By adopting the above technical solution and utilizing the repulsive force between the upper magnetic ring and the lower magnetic ring, the lower valve stem can be kept in a suspended state during rotation, thereby reducing the wear of the lower valve stem.

[0014] Preferably, a diversion structure is arranged inside the valve core, and the diversion structure reduces the pressure on the inner wall of the valve core by diverting the fluid in the valve core.

[0015] By adopting the above technical solution, the fluid passing through the valve core can be diverted by utilizing the diverter structure.

[0016] Preferably, the diversion structure includes a water pipe, which is a circular tube structure with two ends connected, and the outer surface of the water pipe is fixedly connected to the inner wall of the valve core through a support rod, and the water pipe is of the same length as the water passage in the valve core.

[0017] By adopting the above technical solution, the fluid can be diverted by utilizing the flow of the fluid in the water pipe.

[0018] Preferably, the outer surface of the water pipe is provided with a long strip of water outlet in a ring shape, and the outer surface of the water pipe is provided with a flow guide structure, which reduces the friction resistance of the fluid inside the valve core by forming a wavy structure, thereby improving the fluid transportation efficiency.

[0019] By adopting the above technical solution, the fluid conveying efficiency can be improved by utilizing the flow-guiding structure arranged on the outer surface of the water pipe.

[0020] Preferably, the diversion structure includes a No. 1 connecting rod, one end of which is rotatably mounted on the outer surface of the water pipe, the other end of the No. 1 connecting rod is connected to a No. 2 connecting rod, the other end of the No. 2 connecting rod is connected to another No. 1 connecting rod, the other end of the No. 1 connecting rod is rotatably connected to the outer surface of the water pipe, the No. 2 connecting rod is a stretchable flexible structure, the No. 1 connecting rod, the No. 2 connecting rod and another No. 1 connecting rod together constitute a support rod mechanism, the support rod mechanism is arranged in a ring on the outer surface of the water pipe in multiple groups, and guide members are fixedly connected between adjacent support rod mechanisms, the guide members are made of flexible waterproof cloth, the outer surfaces of the guide members are respectively fixed to the outer surface of the water pipe and the surface of the support rod mechanism, and the guide members block the water outlet on the surface of the water pipe.

[0021] By adopting the above technical solution, the fluid can be used to push the guide member to form a wavy structure, thereby forming a wavy water-passing boundary and improving the fluid transportation efficiency.

[0022] Compared with the prior art, the invention has the following beneficial effects: the hard-sealed ball valve with high wear and corrosion resistance:

[0023] 1. In the present invention, a rotating valve core is provided to be connected with the liquid inlet pipe and the liquid outlet pipe on both sides to realize the fluid conveying process, wherein the water passage in the valve core is cylindrical, and an open trumpet shape is provided at the end of the liquid inlet pipe to be connected with the water passage of the valve core. When the fluid enters the valve core from the liquid inlet pipe, the flow rate is slowed down due to the increase of the pipe diameter, thereby reducing the impact on the valve core. The liquid outlet pipe on the other side is provided with a reverse trumpet shape to be connected with the valve core, and the flow rate of the fluid flowing from the valve core into the liquid outlet pipe is increased, thereby increasing the service life of the valve core and ensuring the conveying speed of the fluid;

[0024] Furthermore, an upper valve stem is arranged on the upper surface of the valve core to control the rotation, a lower valve stem is arranged on the lower surface of the valve core to guide and support the rotation process, a T-shaped slider is arranged on the outer surface of the lower valve stem to contact the slide rail, so as to ensure that the rotation process of the lower valve stem always keeps the same track, and avoid the position deviation of the valve core during the rotation process after the device is used for a long time. At the same time, an upper magnetic ring and a lower magnetic ring with repelling magnetic poles are arranged on the lower surface of the lower valve stem, and the repelling magnetic force can be used to keep the lower valve stem in a suspended state during the rotation process, thereby avoiding the wear of the lower valve stem and the inside of the device and improving the service life of the lower valve stem.

[0025] 2. In the present invention, water pipes of equal length are fixed in the valve core. When the fluid enters the valve core, it is diverted by the penetrating water pipes, thereby reducing the impact force of the fluid on the inner wall of the valve core, improving the corrosion resistance of the valve core, and thus increasing the service life of the valve core;

[0026] Furthermore, a water outlet is arranged on the outer surface of the water pipe, and a support rod mechanism consisting of a No. 1 connecting rod and a No. 2 connecting rod is arranged. The support rod mechanism is connected to a guide member made of a flexible waterproof material. When the fluid flows inside the water pipe, the guide member bulges through the water outlet on the surface, and forms a wavy water-flowing boundary on the outer surface of the water pipe together with the support rod mechanism. The wavy water-flowing boundary can reduce the frictional resistance of the fluid flowing in the valve core, thereby improving the fluid delivery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the front cross-section structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the front cross-section structure of the upper support seat of the present invention;

[0030] Figure 4 It is a schematic diagram of the front cross-section structure of the liquid inlet pipe and the liquid outlet pipe of the present invention;

[0031] Figure 5 This is a schematic diagram of the front cross-section structure of the lower support seat of the present invention;

[0032] Figure 6 It is a schematic diagram of the front cross-section structure of the supporting block of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the upper magnetic ring and the lower magnetic ring of the present invention;

[0034] Figure 8 This is a schematic diagram of the front cross-sectional structure of the valve core of the present invention;

[0035] Fig. 9This is a schematic diagram of the structure of the No. 1 connecting rod and the No. 2 connecting rod of the present invention;

[0036] Fig.10 It is a schematic diagram of the front cross-section structure of the water pipe of the present invention.

[0037] In the figure: 1. valve seat; 2. liquid inlet pipe; 3. liquid outlet pipe; 4. valve core; 5. upper valve stem; 6. upper support seat; 7. drive motor; 8. lower valve stem; 9. lower support seat; 10. base; 11. slide rail; 12. slider; 13. support block; 14. upper magnetic ring; 15. lower magnetic ring; 16. water pipe; 17. No. 1 connecting rod; 18. No. 2 connecting rod; 19. guide piece. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-Figure 10 The present invention provides a technical solution: a hard-sealed ball valve with high wear resistance and corrosion resistance, including a valve seat 1, a liquid inlet pipe 2, a liquid outlet pipe 3, a valve core 4, an upper valve stem 5, an upper support seat 6, a drive motor 7, a lower valve stem 8, a lower support seat 9, a base 10, a slide rail 11, a slider 12, a supporting block 13, an upper magnetic ring 14, a lower magnetic ring 15, a water pipe 16, a No. 1 connecting rod 17, a No. 2 connecting rod 18, and a guide 19.

[0040] The valve seat 1 is a hollow spherical structure, a liquid inlet pipe 2 is penetrated on one side surface of the valve seat 1, a liquid outlet pipe 3 is penetrated on the other side surface of the valve seat 1, a valve core 4 is rotatably installed inside the valve seat 1, the valve core 4 is a spherical structure, and a cylindrical water passage is penetrated on the surface of the valve core 4, and the two ends of the water passage inside the valve core 4 are respectively aligned with the liquid inlet pipe 2 and the liquid outlet pipe 3, an upper valve stem 5 is fixedly installed on the upper surface of the valve core 4, the upper valve stem 5 penetrates the upper surface of the valve seat 1, and the outer surface of the upper valve stem 5 is rotatably connected to the surface of the valve seat 1, an upper support seat 6 is fixedly connected to the outer surface of the valve seat 1, the upper support seat 6 is a hollow cylindrical structure with an open lower surface, the upper end of the upper valve stem 5 is located inside the upper support seat 6, a driving motor 7 is fixedly installed on the upper surface of the upper support seat 6, and the output end of the driving motor 7 penetrates the surface of the upper support seat 6 and is fixedly connected to the upper valve stem 5;

[0041] like Figure 1 and Figure 2As shown, when using the device, the liquid inlet pipe 2 and the liquid outlet pipe 3 are respectively connected to the fluid conveying pipeline, the fluid enters the valve core 4 from the liquid inlet pipe 2, and flows out from the valve core 4 into the liquid outlet pipe 3. When it is necessary to control the on-off of the fluid, the drive motor 7 is started, and the drive motor 7 drives the upper valve stem 5 to rotate, and the rotating upper valve stem 5 drives the valve core 4 to rotate. When the cylindrical water passage in the valve core 4 is aligned with the liquid inlet pipe 2 and the liquid outlet pipe 3, the valve is in an open state at this time. When the water passage in the valve core 4 is perpendicular to the liquid inlet pipe 2 and the liquid outlet pipe 3, the valve is in a closed state at this time. The rotation of the valve core 4 can realize the control of the on-off of the fluid.

[0042] The inner wall of the side of the liquid inlet pipe 2 close to the valve core 4 is set to an open trumpet-shaped structure, and the inner wall of the side of the liquid outlet pipe 3 close to the valve core 4 is set to a trumpet shape. The direction of the trumpet in the liquid outlet pipe 3 is opposite to the direction in the liquid inlet pipe 2. A guide structure is set below the valve core 4. The guide structure can support and guide the valve core 4 during the rotation process, thereby preventing the valve core 4 from being misplaced after a long period of rotation. The guide structure includes a lower valve stem 8. The lower valve stem 8 is a cylindrical structure. The upper end of the lower valve stem 8 is fixedly mounted on the lower surface of the valve core 4. The lower end of the valve stem 8 penetrates the lower surface of the valve seat 1, and the lower valve stem 8 is rotatably connected to the surface of the valve seat 1, and the lower end of the lower valve stem 8 is inserted into the interior of the lower support seat 9, the lower support seat 9 is a hollow cylindrical structure with an open upper surface, the upper surface of the lower support seat 9 is fixedly connected to the lower surface of the valve seat 1, and the lower support seat 9 is embedded and fixed on the upper surface of the base 10. The inner wall of the lower support seat 9 is fixedly installed with a slide rail 11, the slide rail 11 is a circular ring structure, and a T-shaped slide rail is arranged inside the slide rail 11, and a slider is slidably connected inside the slide rail 11 12, the cross section of the slider 12 is T-shaped, the surface of the slider 12 is fixedly connected to the outer surface of the lower valve stem 8 through a bracket, and four sliders 12 are distributed in an annular manner on the outer surface of the lower valve stem 8. A support structure is arranged on the surface of the lower valve stem 8, and the support structure reduces the wear of the lower valve stem 8 during the rotation process through the suspension effect of magnetic force. The support structure includes a support block 13, and the support block 13 is embedded and fixed on the bottom surface of the lower support seat 9. The support block 13 is a hollow structure with an open upper surface, and the support block 13 holds the lower end of the lower valve stem 8 Wrapped therein, there is no contact between the inner wall of the supporting block 13 and the outer surface of the lower valve stem 8, an upper magnetic ring 14 is fixedly installed on the lower surface of the lower valve stem 8, a lower magnetic ring 15 is arranged at a corresponding position below the upper magnetic ring 14, the lower magnetic ring 15 is fixedly installed on the bottom surface of the supporting block 13, the magnetic poles of the upper magnetic ring 14 and the lower magnetic ring 15 repel each other, a round rod is arranged on the inner surface of the lower magnetic ring 15, the lower end of the round rod at the lower magnetic ring 15 is fixedly connected to the bottom surface of the supporting block 13, and the upper end of the round rod at the lower magnetic ring 15 is inserted into the inner surface of the upper magnetic ring 14;

[0043] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, when the fluid enters the valve core 4 from the inlet pipe 2, the pipe diameter increases when passing through the trumpet structure at the end of the inlet pipe 2, thereby slowing down the flow rate of the fluid when entering the inlet pipe 2. At the same time, when the fluid enters the outlet pipe 3 from the trumpet structure in the opposite direction on the other side, the pipe diameter decreases and the flow rate increases, thereby maintaining a relatively slow flow rate of the fluid in the valve core 4, reducing the impact force of the fluid on the inner wall of the valve core 4. When the valve core 4 rotates under the action of the driving motor 7, the lower valve stem 8 on the lower surface of the valve core 4 rotates inside the lower support seat 9 to support the rotation process of the valve core 4. When the lower valve stem 8 rotates, the slider 12 on the outer surface of the lower valve stem 8 rotates inside the slide rail 11, thereby keeping the rotation trajectory of the lower valve stem 8 unchanged. At the same time, between the upper magnetic ring 14 and the lower magnetic ring 15 located below the lower valve stem 8, the lower valve stem 8 is suspended inside the support block 13 through the action of repelling magnetic forces, ensuring that during the rotation of the lower valve stem 8, no wear occurs between the support block 13.

[0044] A flow diversion structure is arranged inside the valve core 4, and the flow diversion structure reduces the pressure on the inner wall of the valve core 4 by diverting the fluid in the valve core 4. The flow diversion structure includes a water pipe 16, and the water pipe 16 is a circular tube structure with two ends passed through, and the outer surface of the water pipe 16 is fixedly connected to the inner wall of the valve core 4 through a support rod. The water pipe 16 is of equal length to the water passage in the valve core 4, and a long strip of water outlet is arranged in an annular shape on the outer surface of the water pipe 16. A flow guide structure is arranged on the outer surface of the water pipe 16, and the flow guide structure reduces the friction resistance of the fluid inside the valve core 4 by forming a wavy structure, thereby improving the fluid transportation efficiency. The flow guide structure includes a No. 1 connecting rod 17, and one end of the No. 1 connecting rod 17 is rotatably mounted on the outer surface of the water pipe 16. The other end of the connecting rod 17 is connected to a No. 2 connecting rod 18, and the other end of the No. 2 connecting rod 18 is connected to another No. 1 connecting rod 17. The other end of the No. 1 connecting rod 17 is rotatably connected to the outer surface of the water pipe 16. The No. 2 connecting rod 18 is a stretchable flexible structure. The No. 1 connecting rod 17, the No. 2 connecting rod 18 and another No. 1 connecting rod 17 together constitute a support rod mechanism. The support rod mechanism is arranged in multiple groups in a ring on the outer surface of the water pipe 16. A guide member 19 is fixedly connected between adjacent support rod mechanisms. The guide member 19 is made of a flexible waterproof cloth material. The outer surface of the guide member 19 is respectively fixed to the outer surface of the water pipe 16 and the surface of the support rod mechanism. The guide member 19 blocks the water outlet on the surface of the water pipe 16.

[0045] like Figure 2 , Figure 8 , Fig. 9 and Fig.10As shown, when the fluid flows in the valve core 4, the fluid flows from the inner surface and the outer surface of the water pipe 16 respectively under the separation of the water pipe 16, so that the fluid pressure on the inner wall of the valve core 4 is reduced, thereby increasing the service life of the valve core 4. When the fluid flows on the inner surface of the water pipe 16, the fluid pushes the guide member 19 to bulge outward, and the movement of the guide member 19 drives the No. 1 connecting rod 17 to rotate. At this time, the stretchable flexible No. 2 connecting rod 18 moves synchronously, and the No. 1 connecting rod 17, the No. 2 connecting rod 18 and the guide member 19 form a wavy water boundary structure on the outer surface of the water pipe 16. During the movement of the fluid, the wave structure can be used to reduce the friction resistance between the fluid and the valve core 4, thereby improving the fluid delivery efficiency.

[0046] Working principle: Use the liquid inlet pipe 2 and the liquid outlet pipe 3 to connect the device to the fluid delivery pipeline, start the drive motor 7, the drive motor 7 drives the upper valve stem 5 to rotate, the upper valve stem 5 drives the valve core 4 to rotate, the rotating valve core 4 can control the on-off state of the fluid, when the fluid enters the valve core 4 from the liquid inlet pipe 2, the flow rate of the horn structure at the end is slowed down, reducing the impact force of the fluid on the inner wall of the valve core 4, when the valve core 4 rotates, the lower valve stem 8 on the lower surface of the valve core 4 rotates synchronously, and the slider 12 on the outer surface of the lower valve stem 8 rotates inside the slide rail 11 to ensure the rotation of the valve core 4 The trajectory is always consistent. The upper magnetic ring 14 and the lower magnetic ring 15 are set on the lower valve stem 8 to repel each other, so that the lower valve stem 8 is suspended inside the supporting block 13, ensuring that during the rotation of the lower valve stem 8, no wear will occur between the supporting block 13, thereby improving the service life of the device. The water pipe 16 in the valve core 4 can be used to divert the fluid inside the valve core 4, reducing the fluid pressure on the inner wall of the valve core 4, and the wave structure formed by the guide member 19 on the outer surface of the water pipe 16 can reduce the friction resistance between the fluid and the valve core 4, thereby improving the fluid transportation efficiency.

[0047] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A hard-sealed ball valve with high wear resistance and corrosion resistance, comprising a valve seat (1), the valve seat (1) being a hollow spherical structure, a liquid inlet pipe (2) being provided through one side surface of the valve seat (1), a liquid outlet pipe (3) being provided through the other side surface of the valve seat (1), a valve core (4) being rotatably mounted inside the valve seat (1), the valve core (4) being a spherical structure, and a cylindrical water passage being provided through the surface of the valve core (4), the two ends of the water passage inside the valve core (4) being aligned with the liquid inlet pipe (2) and the liquid outlet pipe (3) respectively, and the upper surface of the valve core (4) being fixed An upper valve stem (5) is installed, the upper valve stem (5) passes through the upper surface of the valve seat (1), and the outer surface of the upper valve stem (5) is rotatably connected to the surface of the valve seat (1), the outer surface of the valve seat (1) is fixedly connected to an upper support seat (6), the upper support seat (6) is a hollow cylindrical structure with an open lower surface, the upper end of the upper valve stem (5) is located inside the upper support seat (6), and a driving motor (7) is fixedly installed on the upper surface of the upper support seat (6), the output end of the driving motor (7) passes through the surface of the upper support seat (6) and is fixedly connected to the upper valve stem (5), characterized in that: The inner wall of the side of the liquid inlet pipe (2) close to the valve core (4) is arranged to be an open trumpet-shaped structure, and the inner wall of the side of the liquid outlet pipe (3) close to the valve core (4) is arranged to be trumpet-shaped. The direction of the trumpet shape in the liquid outlet pipe (3) is opposite to the direction in the liquid inlet pipe (2). A guide structure is arranged below the valve core (4), and the guide structure can support and guide the valve core (4) during its rotation process, thereby preventing the valve core (4) from being misaligned after a long period of rotation.

2. A hard-sealed ball valve with high wear and corrosion resistance according to claim 1, characterized in that: The guide structure includes a lower valve stem (8), which is a cylindrical structure. The upper end of the lower valve stem (8) is fixedly mounted on the lower surface of the valve core (4). The lower end of the lower valve stem (8) penetrates the lower surface of the valve seat (1), and the lower valve stem (8) is rotatably connected to the surface of the valve seat (1). The lower end of the lower valve stem (8) is inserted into the interior of a lower support seat (9). The lower support seat (9) is a hollow cylindrical structure with an open upper surface. The upper surface of the lower support seat (9) is fixedly connected to the lower surface of the valve seat (1), and the lower support seat (9) is embedded and fixed on the upper surface of the base (10).

3. A hard-sealed ball valve with high wear and corrosion resistance according to claim 2, characterized in that: A slide rail (11) is fixedly installed on the inner wall of the lower support seat (9). The slide rail (11) is a circular ring structure, and a T-shaped slideway is arranged inside the slide rail (11). A slider (12) is slidably connected to the inside of the slide rail (11). The cross-section of the slider (12) is T-shaped. The surface of the slider (12) is fixedly connected to the outer surface of the lower valve stem (8) through a bracket. Four sliders (12) are distributed in an annular manner on the outer surface of the lower valve stem (8).

4. The hard-sealed ball valve with high wear and corrosion resistance according to claim 2, characterized in that: A support structure is arranged on the surface of the lower valve stem (8), and the support structure reduces the wear of the lower valve stem (8) during the rotation process through the suspension effect of magnetic force.

5. The hard-sealed ball valve with high wear and corrosion resistance according to claim 4, characterized in that: The support structure comprises a support block (13), wherein the support block (13) is embedded and fixed on the bottom surface of the lower support seat (9), the support block (13) is a hollow structure with an open upper surface, and the support block (13) wraps the lower end of the lower valve stem (8) therein, and there is no contact between the inner wall of the support block (13) and the outer surface of the lower valve stem (8), and an upper magnetic ring (14) is fixedly installed on the lower surface of the lower valve stem (8), and the upper magnetic ring (14) ) is provided at a corresponding position below the support block (13), the lower magnetic ring (15) is fixedly mounted on the bottom surface of the support block (13), the magnetic poles of the upper magnetic ring (14) and the lower magnetic ring (15) repel each other, a round rod is provided on the inner surface of the lower magnetic ring (15), the lower end of the round rod at the lower magnetic ring (15) is fixedly connected to the bottom surface of the support block (13), and the upper end of the round rod at the lower magnetic ring (15) is inserted into the inner surface of the upper magnetic ring (14).

6. The hard-sealed ball valve with high wear and corrosion resistance according to claim 1, characterized in that: A flow diversion structure is arranged inside the valve core (4), and the flow diversion structure reduces the pressure on the inner wall of the valve core (4) by diverting the fluid in the valve core (4).

7. A hard-sealed ball valve with high wear and corrosion resistance according to claim 6, characterized in that: The diversion structure comprises a water pipe (16), the water pipe (16) being a circular pipe structure with two ends connected, and the outer surface of the water pipe (16) being fixedly connected to the inner wall of the valve core (4) via a support rod, and the water pipe (16) is of the same length as the water passage in the valve core (4).

8. The hard-sealed ball valve with high wear and corrosion resistance according to claim 7, characterized in that: The outer surface of the water pipe (16) is provided with a long strip of water outlet in a ring shape, and the outer surface of the water pipe (16) is provided with a flow guiding structure, which forms a wavy structure, thereby reducing the friction resistance of the fluid inside the valve core (4) and improving the fluid conveying efficiency.

9. The hard-sealed ball valve with high wear and corrosion resistance according to claim 8, characterized in that: The diversion structure comprises a No. 1 connecting rod (17), one end of which is rotatably mounted on the outer surface of the water pipe (16), the other end of which is connected to a No. 2 connecting rod (18), the other end of which is connected to another No. 1 connecting rod (17), the other end of which is rotatably connected to the outer surface of the water pipe (16), the No. 2 connecting rod (18) being a stretchable flexible structure, and the No. 1 connecting rod (17) being a stretchable flexible structure. ), a No. 2 connecting rod (18) and another No. 1 connecting rod (17) together constitute a support rod mechanism, wherein a plurality of support rod mechanisms are arranged in a ring shape on the outer surface of the water pipe (16), and a guide member (19) is fixedly connected between adjacent support rod mechanisms, wherein the guide member (19) is made of a flexible waterproof cloth material, and the outer surface of the guide member (19) is respectively fixed to the outer surface of the water pipe (16) and the surface of the support rod mechanism, and the guide member (19) shields the water outlet on the surface of the water pipe (16).

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