An intelligent ball valve based on fluid pressure and its usage method

Abstract

The present invention discloses an intelligent ball valve based on fluid pressure and its usage method, which relates to the technical field of ball valves. The present invention includes a first valve body and a second valve body. On the sides of the first valve body and the second valve body close to each other, a first groove and a second groove are respectively provided. The outer walls of the first groove and the second groove are provided with the same first gasket. A valve stem rotatably penetrates through the interior of the first valve body, and a valve core is arranged inside the first valve body. When the present invention is in normal use, the device can, according to the magnitude of the fluid pressure, make the first I-shaped block squeeze the second gasket, so that the second gasket is pressed against the valve core, thereby improving the sealing degree of the device. When the fluid pressure rises to a certain level, the liquid inside passes through the second installation groove and the pressure relief pipe for pressure relief, thereby reducing the pressure inside the second valve body and ensuring that the valve core will not be damaged or leak. By adjusting the position of the movable adjustment block, the space inside the hydraulic groove can be compressed, thereby increasing the magnitude of the thrust.

Description

Technical Field

[0001] The present invention belongs to the technical field of ball valves, and particularly relates to an intelligent ball valve based on fluid pressure and a using method thereof. Background Art

[0002] A ball valve is defined in the standard GB / T21465-2008 "Terms for Valves" as: a valve in which the closing member (ball) is driven by a valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids. Among them, the hard-sealed V-type ball valve has a strong shearing force between the V-type ball core and the metal valve seat surfacing with hard alloy, and is particularly suitable for media containing fibers, tiny solid particles, etc. The multi-way ball valve can not only flexibly control the confluence, diversion, and flow direction switching of the medium on the pipeline, but also close any channel to connect the other two channels.

[0003] After retrieval, the invention with the publication number CN113357398B discloses an intelligent ball valve based on fluid pressure, belonging to the technical field of ball valves. The present invention can, by setting a hollow push rod in the valve core, utilize the fluid pressure acting on the valve core to push it backward to achieve high-strength sealing with the composite rubber ring at the outlet. At the same time, a flow sensor is used to monitor the flow rate, so as to calculate the pressure received at the hollow push rod. When the fluid pressure is insufficient, an electromagnet inside the composite rubber ring is activated to actively adsorb the hollow push rod, so that good sealing effect can still be maintained in cooperation with the fluid pressure. After the composite rubber ring is squeezed, it relies on the oil inside to trigger an expansion action to make it fully fit, and actively forms an oil layer for temporary sealing after the oil leaks accidentally. Compared with the existing ball valve sealing method, the valve core in the present invention can actively cooperate with the composite rubber ring for sealing, and it is not easy to deform and have gaps to cause fluid medium leakage.

[0004] When this intelligent ball valve is in use, there are still the following defects:

[0005] 1. After the gasket is used for a period of time, the elasticity will decrease, resulting in its inability to return to the initial position, and thus leakage may occur;

[0006] 2. When the pressure is too high, it can only continuously squeeze the gasket and cannot help reduce the pressure, and the device is easy to be damaged. Summary of the Invention

[0007] The object of the present invention is to provide an intelligent ball valve based on fluid pressure and its usage method. During normal use, the device can, according to the magnitude of the fluid pressure, make the first I-shaped block extrude the second sealing gasket, thereby making the second sealing gasket closely adhere to the valve core, improving the sealing degree of the device. When the fluid pressure rises to a certain level, the sealing block moves to the outside of the second installation groove. At this time, the internal liquid is depressurized through the second installation groove and the pressure relief pipe, thereby reducing the pressure inside the second valve body and ensuring that the valve core will not be damaged or leak. By adjusting the position of the moving adjustment block, the space inside the hydraulic groove can be compressed, thereby increasing the magnitude of the thrust, solving the existing technical problems.

[0008] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0009] An intelligent ball valve based on fluid pressure and its usage method, comprising: a first valve body and a second valve body. The first valve body and the second valve body are respectively provided with a first groove and a second groove on the sides close to each other. The outer walls of the first groove and the second groove are provided with the same first sealing gasket. A valve rod rotates through the interior of the first valve body. A valve core is arranged inside the first valve body. Second sealing gaskets are arranged on both sides of the valve core. A clamping groove for cooperating with the valve rod is opened at the top of the valve core. A handle is fixedly connected to the top of the valve rod. A first installation groove is opened inside the second valve body. Two symmetrically arranged hydraulic grooves are opened inside the second valve body. The hydraulic grooves communicate with the first installation groove. A sealing component for improving the sealing performance of the device according to the fluid pressure is arranged inside the hydraulic grooves;

[0010] A detection component for detecting the fluid pressure is arranged inside the first installation groove;

[0011] A third installation groove communicating with each other is opened inside the hydraulic groove. An adjustment component for adjusting the space inside the hydraulic groove is arranged inside the third installation groove;

[0012] A second installation groove is opened at the bottom of the second valve body. A pressure relief component for quickly relieving pressure is arranged inside the second installation groove.

[0013] Optionally, the sealing component includes a first I-shaped block sliding through the hydraulic groove. One end of the first I-shaped block extends into the second groove. The other end of the hydraulic groove is slidably penetrated by a second I-shaped block. Hydraulic oil is arranged between the first I-shaped block and the second I-shaped block.

[0014] Optionally, the detection component includes a pushing block slidably connected to the inner wall of the first installation groove. The pushing block is used in cooperation with the second I-shaped block. A first spring is fixedly connected between one side of the pushing block and one side inner wall of the first installation groove. The pushing block is fixedly connected to the outer wall of the sliding ring.

[0015] Optionally, the adjusting component includes an adjusting block slidably connected to the inner wall of the third installation groove. One end of the adjusting block is fixedly connected to a trapezoidal block. One end of the trapezoidal block extends to the outside of the second valve body. One side of the trapezoidal block is fixedly connected to a second limiting plate. The same second spring is fixedly connected between the second limiting plate and the second valve body.

[0016] Optionally, the pressure relief component includes a sealing block slidably connected to the inner wall of the second installation groove. One side of the sealing block is fixedly connected to a frustum-shaped block. One end of the frustum-shaped block is fixedly connected to a connecting rod.

[0017] Optionally, threaded holes are formed on both sides of the first valve body and the second valve body close to each other. Screws are arranged inside the threaded holes. Nuts that are used in cooperation are threadedly sleeved on the outer walls of the screws.

[0018] Optionally, a ring is threadedly sleeved on the outer wall of the second valve body. One side of the trapezoidal block is inclined. The ring is used in cooperation with the inclined surface of the trapezoidal block.

[0019] Optionally, a pressure relief pipe is fixedly connected to one side of the second valve body. The pressure relief pipe is communicated with the second installation groove. One end of the connecting rod slidably penetrates through the pressure relief pipe and is fixedly connected to a first limiting plate. The same tension spring is fixedly connected between the first limiting plate and the pressure relief pipe. The tension spring is sleeved on the connecting rod.

[0020] A usage method of an intelligent ball valve based on fluid pressure specifically includes the following steps:

[0021] S1. During use, when the fluid enters through the second valve body, the fluid pushes the sliding ring to move horizontally. The sliding ring drives the pushing block to move horizontally. The pushing block squeezes the first spring and drives the second I-shaped block to move horizontally. The second I-shaped block pushes the hydraulic oil to move horizontally. The hydraulic oil pushes the first I-shaped block to move horizontally. The first I-shaped block squeezes the second gasket, so that the second gasket is pressed against the valve core, improving the sealing degree of the device.

[0022] S2. When the fluid pressure rises to a certain level, the pushing block moves to the farthest distance. At this time, the valve core has the risk of damage and leakage. At the same time, under the pulling force of the tension spring, the first limiting plate moves towards the direction close to the pressure relief pipe. The first limiting plate drives the connecting rod to move. The connecting rod drives the frustum-shaped block to move. The frustum-shaped block drives the sealing block to move. The sealing block moves to the outside of the second installation groove. At this time, the internal liquid is pressure-relieved through the second installation groove and the pressure relief pipe, thereby reducing the pressure inside the second valve body and ensuring that the valve core will not be damaged and leak.

[0023] S3. After the second gasket has been used for some time, its elasticity gradually decreases. At this time, a greater thrust is required to ensure the sealing performance. Rotate the ring, and the ring moves horizontally along the outer wall of the second valve body. The ring pushes the trapezoidal block to move horizontally towards the hydraulic groove. The trapezoidal block drives the second limit plate to move horizontally. The second limit plate squeezes the second spring. The trapezoidal block drives the adjusting block to move horizontally, thereby compressing the space inside the hydraulic groove. The first I-shaped block will move out a certain distance in advance, thereby increasing the magnitude of the thrust.

[0024] The embodiments of the present invention have the following beneficial effects:

[0025] During normal use, the device can squeeze the second gasket through the magnitude of the fluid pressure, thereby making the second gasket close to the valve core and improving the sealing degree of the device. When the fluid pressure rises to a certain level, the sealing block moves to the outside of the second installation groove. At this time, the internal liquid is depressurized through the second installation groove and the pressure relief pipe, thereby reducing the pressure inside the second valve body and ensuring that the valve core will not be damaged or leak. By adjusting the position of the moving adjusting block, the space inside the hydraulic groove can be compressed, thereby increasing the magnitude of the thrust.

[0026] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a three-dimensional structure schematic diagram of an embodiment of the present invention;

[0029] Figure 2 It is a structure schematic diagram of the first valve body in an embodiment of the present invention;

[0030] Figure 3 It is a structure schematic diagram of the second valve body in an embodiment of the present invention;

[0031] Figure 4 It is a structure schematic diagram of the valve core in an embodiment of the present invention;

[0032] Figure 5 It is a three-dimensional sectional structure schematic diagram of the second valve body in an embodiment of the present invention;

[0033] Figure 6 It is an enlarged structure schematic diagram of part A in an embodiment of the present invention;

[0034] Figure 7 Schematic enlarged structure diagram of part B in an embodiment of the present invention;

[0035] Figure 8 Schematic enlarged structure diagram of part C in an embodiment of the present invention.

[0036] Reference numerals: 1, first valve body; 2, screw; 3, second valve body; 4, nut; 5, handle; 6, first groove; 7, threaded hole; 8, first gasket; 9, second groove; 10, valve stem; 11, second gasket; 12, valve core; 13, clamping groove; 14, sliding ring; 15, pushing block; 16, first spring; 17, circular ring; 18, first I-shaped block; 19, hydraulic groove; 20, adjusting block; 21, second I-shaped block; 22, first installation groove; 23, sealing block; 24, frustum block; 25, second installation groove; 26, pressure relief pipe; 27, tension spring; 28, first limiting plate; 29, connecting rod; 30, second spring; 31, second limiting plate; 32, trapezoidal block; 33, third installation groove. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc. indicating orientation or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0039] In order to keep the following description of the embodiments of the present invention clear and concise, the detailed descriptions of known functions and known components are omitted in the present invention.

[0040] Embodiment 1

[0041] Please refer to Figure 1-4As shown, in this embodiment, an intelligent ball valve based on fluid pressure and its usage method are provided, including: a first valve body 1 and a second valve body 3. On the sides of the first valve body 1 and the second valve body 3 that are close to each other, a first groove 6 and a second groove 9 are respectively formed. The outer walls of the first groove 6 and the second groove 9 are provided with the same first gasket 8. A valve stem 10 rotatably penetrates through the interior of the first valve body 1. A valve core 12 is arranged inside the first valve body 1. Second gaskets 11 are arranged on both sides of the valve core 12. A clamping groove 13 for cooperating with the valve stem 10 is formed at the top of the valve core 12. A handle 5 is fixedly connected to the top of the valve stem 10. A first installation groove 22 is formed inside the second valve body 3. Two symmetrically arranged hydraulic grooves 19 are formed inside the second valve body 3. The hydraulic grooves 19 communicate with the first installation groove 22. A sealing component for improving the sealing performance of the device according to the fluid pressure is arranged inside the hydraulic groove 19;

[0042] A detection component for detecting the fluid pressure is arranged inside the first installation groove 22;

[0043] A third installation groove 33 that communicates with each other is formed inside the hydraulic groove 19. An adjusting component for adjusting the internal space of the hydraulic groove 19 is arranged inside the third installation groove 33;

[0044] A second installation groove 25 is formed at the bottom of the second valve body 3. A pressure relief component for quickly relieving pressure is arranged inside the second installation groove 25.

[0045] In one aspect of this embodiment, as Figure 5 shown, the sealing component includes a first I-shaped block 18 that slidably penetrates through the hydraulic groove 19. One end of the first I-shaped block 18 extends into the second groove 9. The other end of the hydraulic groove 19 slidably penetrates through a second I-shaped block 21. Hydraulic oil is arranged between the first I-shaped block 18 and the second I-shaped block 21. When the fluid enters through the second valve body 3, the fluid pushes the sliding ring 14 to move horizontally. The sliding ring 14 drives the pushing block 15 to move horizontally. The pushing block 15 squeezes the first spring 16 and drives the second I-shaped block 21 to move horizontally. The second I-shaped block 21 pushes the hydraulic oil to move horizontally. The hydraulic oil pushes the first I-shaped block 18 to move horizontally. The first I-shaped block 18 squeezes the second gasket 11, thereby making the second gasket 11 closely adhere to the valve core 12 and improving the sealing degree of the device.

[0046] In one aspect of this embodiment, as Figure 6 shown, the detection component includes a pushing block 15 slidably connected to the inner wall of the first installation groove 22. The pushing block 15 is used in cooperation with the second I-shaped block 21. A same first spring 16 is fixedly connected between one side of the pushing block 15 and one side inner wall of the first installation groove 22. The pushing block 15 is fixedly connected to the outer wall of the sliding ring 14.

[0047] In another aspect of this embodiment, asFigure 8 As shown in the figure, the adjusting component includes an adjusting block 20 slidably connected to the inner wall of the third installation groove 33. One end of the adjusting block 20 is fixedly connected to a trapezoidal block 32. One end of the trapezoidal block 32 extends to the outside of the second valve body 3. One side of the trapezoidal block 32 is fixedly connected to a second limiting plate 31. A same second spring 30 is fixedly connected between the second limiting plate 31 and the second valve body 3. After the second gasket 11 is used for a period of time, its elasticity gradually decreases. At this time, a greater thrust is required to ensure the sealing performance. Rotate the ring 17, and the ring 17 moves horizontally along the outer wall of the second valve body 3. The ring 17 pushes the trapezoidal block 32 to move horizontally towards the hydraulic groove 19. The trapezoidal block 32 drives the second limiting plate 31 to move horizontally. The second limiting plate 31 squeezes the second spring 30. The trapezoidal block 32 drives the adjusting block 20 to move horizontally, thereby compressing the space inside the hydraulic groove 19. The first I-shaped block 18 will move out a certain distance in advance, thereby increasing the magnitude of the thrust.

[0048] In other aspects of this embodiment, such as Figure 7 As shown in the figure, the pressure relief component includes a sealing block 23 slidably connected to the inner wall of the second installation groove 25. One side of the sealing block 23 is fixedly connected to a frustum block 24. One end of the frustum block 24 is fixedly connected to a connecting rod 29. When the fluid pressure rises to a certain level, the pushing block 15 moves to the farthest distance. At this time, there is a risk of damage and leakage of the valve core 12. At the same time, the first limiting plate 28 moves towards the pressure relief pipe 26 under the pulling force of the tension spring 27. The first limiting plate 28 drives the connecting rod 29 to move. The connecting rod 29 drives the frustum block 24 to move. The frustum block 24 drives the sealing block 23 to move. The sealing block 23 moves to the outside of the second installation groove 25. At this time, the internal liquid is relieved through the second installation groove 25 and the pressure relief pipe 26, thereby reducing the pressure inside the second valve body 3 and ensuring that the valve core 12 will not be damaged and leaked.

[0049] Embodiment Two

[0050] Based on the improvement of Embodiment One: Refer to the attached Figure 1-2 , threaded holes 7 are respectively opened on the sides of the first valve body 1 and the second valve body 3 close to each other. Screws 2 are arranged inside the threaded holes 7. Nuts 4 that are used in cooperation are threadedly sleeved on the outer walls of the screws 2. A ring 17 is threadedly sleeved on the outer wall of the second valve body 3. One side of the trapezoidal block 32 is inclined. The ring 17 is used in cooperation with the inclined surface of the trapezoidal block 32. Rotate the ring 17, and the ring 17 moves horizontally along the outer wall of the second valve body 3. The ring 17 pushes the trapezoidal block 32 to move horizontally towards the hydraulic groove 19.

[0051] Embodiment Three

[0052] Based on the improvement of Embodiment One: Refer to the attached Figure 6-7, on one side of the second valve body 3, a pressure relief pipe 26 is fixedly connected. The pressure relief pipe 26 communicates with the second installation groove 25. One end of the connecting rod 29 slidably penetrates through the pressure relief pipe 26 and is fixedly connected with a first limiting plate 28. A same tension spring 27 is fixedly connected between the first limiting plate 28 and the pressure relief pipe 26. The tension spring 27 is sleeved on the connecting rod 29. When the sealing block 23 moves to the outside of the second installation groove 25, at this time, the internal liquid is depressurized through the second installation groove 25 and the pressure relief pipe 26, thereby reducing the pressure inside the second valve body 3 and ensuring that the valve core 12 will not be damaged or leak.

[0053] A usage method of an intelligent ball valve based on fluid pressure specifically includes the following steps:

[0054] S1. When in use, when the fluid enters through the second valve body 3, the fluid pushes the sliding ring 14 to move horizontally. The sliding ring 14 drives the pushing block 15 to move horizontally. The pushing block 15 squeezes the first spring 16 and drives the second I-shaped block 21 to move horizontally. The second I-shaped block 21 pushes the hydraulic oil to move horizontally. The hydraulic oil pushes the first I-shaped block 18 to move horizontally. The first I-shaped block 18 squeezes the second sealing gasket 11, thereby making the second sealing gasket 11 closely adhere to the valve core 12 and improving the sealing degree of the device.

[0055] S2. When the fluid pressure rises to a certain extent, the pushing block 15 moves to the farthest distance. At this time, there is a risk of damage and leakage of the valve core 12. At the same time, under the pulling force of the tension spring 27, the first limiting plate 28 moves towards the direction close to the pressure relief pipe 26. The first limiting plate 28 drives the connecting rod 29 to move. The connecting rod 29 drives the frustum-shaped block 24 to move. The frustum-shaped block 24 drives the sealing block 23 to move. The sealing block 23 moves to the outside of the second installation groove 25. At this time, the internal liquid is depressurized through the second installation groove 25 and the pressure relief pipe 26, thereby reducing the pressure inside the second valve body 3 and ensuring that the valve core 12 will not be damaged or leak.

[0056] S3. After the second sealing gasket 11 is used for a period of time, its elasticity gradually decreases. At this time, a greater thrust is required to ensure the sealing performance. Rotate the circular ring 17. The circular ring 17 moves horizontally along the outer wall of the second valve body 3. The circular ring 17 pushes the trapezoidal block 32 to move horizontally towards the direction close to the hydraulic groove 19. The trapezoidal block 32 drives the second limiting plate 31 to move horizontally. The second limiting plate 31 squeezes the second spring 30. The trapezoidal block 32 drives the adjusting block 20 to move horizontally, thereby compressing the space inside the hydraulic groove 19. The first I-shaped block 18 will move out a certain distance in advance, thereby increasing the magnitude of the thrust.

[0057] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish each feature, and there is no actual order or directional meaning. This application is not limited thereto.

[0058] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0059] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An intelligent ball valve based on fluid pressure, characterized in that, Comprising: A first valve body (1) and a second valve body (3). On the sides of the first valve body (1) and the second valve body (3) close to each other, a first groove (6) and a second groove (9) are respectively provided. The outer walls of the first groove (6) and the second groove (9) are provided with the same first gasket (8). A valve stem (10) rotatably penetrates through the interior of the first valve body (1). A valve core (12) is arranged inside the first valve body (1). Second gaskets (11) are arranged on both sides of the valve core (12). A clamping groove (13) for cooperating with the valve stem (10) is provided at the top of the valve core (12). A handle (5) is fixedly connected to the top of the valve stem (10). A first installation groove (22) is provided inside the second valve body (3). Two symmetrically arranged hydraulic grooves (19) are provided inside the second valve body (3). The hydraulic grooves (19) communicate with the first installation groove (22). A sealing assembly for improving the sealing performance of the device according to the fluid pressure is arranged inside the hydraulic grooves (19); A detection assembly for detecting the fluid pressure is arranged inside the first installation groove (22); A third installation groove (33) communicating with each other is provided inside the hydraulic grooves (19). An adjustment assembly for adjusting the internal space of the hydraulic grooves (19) is arranged inside the third installation groove (33); A second installation groove (25) is provided at the bottom of the second valve body (3). A pressure relief assembly for rapid pressure relief is arranged inside the second installation groove (25); The sealing assembly includes a first I-shaped block (18) slidably penetrating through the hydraulic groove (19). One end of the first I-shaped block (18) extends into the second groove (9). The other end of the hydraulic groove (19) is slidably penetrated by a second I-shaped block (21). Hydraulic oil is arranged between the first I-shaped block (18) and the second I-shaped block (21); The adjustment assembly includes an adjustment block (20) slidably connected to the inner wall of the third installation groove (33). One end of the adjustment block (20) is fixedly connected to a trapezoidal block (32). One end of the trapezoidal block (32) extends to the outside of the second valve body (3). A second limiting plate (31) is fixedly connected to one side of the trapezoidal block (32). The second limiting plate (31) and the second valve body (3) are fixedly connected by the same second spring (30).

2. The intelligent ball valve based on fluid pressure according to claim 1, wherein The detection assembly includes a pushing block (15) slidably connected to the inner wall of the first installation groove (22). The pushing block (15) cooperates with the second I-shaped block (21). A first spring (16) is fixedly connected between one side of the pushing block (15) and one side inner wall of the first installation groove (22). The pushing block (15) is fixedly connected to the outer wall of a sliding ring (14).

3. The intelligent ball valve based on fluid pressure according to claim 1, characterized in that, The pressure relief assembly includes a sealing block (23) slidably connected to the inner wall of the second installation groove (25). A frustum-shaped block (24) is fixedly connected to one side of the sealing block (23). A connecting rod (29) is fixedly connected to one end of the frustum-shaped block (24).

4. An intelligent ball valve based on fluid pressure according to claim 1, characterized in that, On one side of the first valve body (1) and the second valve body (3) close to each other, threaded holes (7) are provided. Inside the threaded holes (7), screws (2) are arranged, and nuts (4) used in cooperation are threadedly sleeved on the outer walls of the screws (2).

5. The intelligent ball valve based on fluid pressure according to claim 1, wherein A ring (17) is threadedly sleeved on the outer wall of the second valve body (3). One side of the trapezoidal block (32) is inclined, and the ring (17) is used in cooperation with the inclined surface of the trapezoidal block (32).

6. The intelligent ball valve based on fluid pressure according to claim 3, wherein One side of the second valve body (3) is fixedly connected to a pressure relief pipe (26). The pressure relief pipe (26) is communicated with the second installation groove (25). One end of a connecting rod (29) slidably penetrates through the pressure relief pipe (26) and is fixedly connected to a first limiting plate (28). A same tension spring (27) is fixedly connected between the first limiting plate (28) and the pressure relief pipe (26), and the tension spring (27) is sleeved on the connecting rod (29).

7. The usage method of an intelligent ball valve based on fluid pressure according to any one of claims 1-6, characterized in that, Specifically, it includes the following steps: S1. During use, when the fluid enters through the second valve body (3), the fluid pushes the sliding ring (14) to move horizontally. The sliding ring (14) drives the pushing block (15) to move horizontally. The pushing block (15) squeezes the first spring (16) and drives the second I-shaped block (21) to move horizontally. The second I-shaped block (21) pushes the hydraulic oil to move horizontally. The hydraulic oil pushes the first I-shaped block (18) to move horizontally. The first I-shaped block (18) squeezes the second gasket (11), so that the second gasket (11) is pressed against the valve core (12), improving the sealing degree of the device; S2. When the fluid pressure rises to a certain level, the pushing block (15) moves to the farthest distance. At this time, the valve core (12) has the risk of damage and leakage. At the same time, the first limiting plate (28) moves towards the direction close to the pressure relief pipe (26) under the pulling force of the tension spring (27). The first limiting plate (28) drives the connecting rod (29) to move. The connecting rod (29) drives the frustum-shaped block (24) to move. The frustum-shaped block (24) drives the sealing block (23) to move. The sealing block (23) moves to the outside of the second installation groove (25). At this time, the internal liquid is depressurized through the second installation groove (25) and the pressure relief pipe (26), thereby reducing the pressure inside the second valve body (3) and ensuring that the valve core (12) will not be damaged and leak; S3. After the second gasket (11) is used for a period of time, its elasticity gradually decreases. At this time, a greater thrust is required to ensure the sealing performance. Rotate the ring (17). The ring (17) moves horizontally along the outer wall of the second valve body (3). The ring (17) pushes the trapezoidal block (32) to move horizontally towards the direction close to the hydraulic groove (19). The trapezoidal block (32) drives the second limiting plate (31) to move horizontally. The second limiting plate (31) squeezes the second spring (30). The trapezoidal block (32) drives the adjusting block (20) to move horizontally, thereby compressing the space inside the hydraulic groove (19). The first I-shaped block (18) will move out a certain distance in advance, thereby increasing the magnitude of the thrust.

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