Three-piece type internal and external thread connection floating ball valve

Abstract

The utility model belongs to the technical field of valves, particularly relates to a three-piece type internal and external thread connection floating type ball valve, and aims to solve the problem that an existing valve only has a simple pressure detection function and cannot timely and effectively release pressure when the pressure is too large. According to the technical scheme, the ball valve comprises a valve body, a valve clack, a valve ball, a valve rod and a handle and is further provided with a pressure measuring mechanism and a pressure relief mechanism, in the pressure measuring mechanism, a stress plate in a supporting cover is pushed by liquid pressure, and a pressing plate acts on a pressure sensor through a push rod to detect pressure; in the pressure relief mechanism, liquid flows into a flowing cover through a flowing hole and then flows to a mounting pipe through a telescopic pipeline, when the pressure is too large, a magnetic attraction component controls a sealing assembly to be opened, the liquid is discharged through a drainage hole and a drainage pipeline connected with a connector, and pressure relief is achieved. By means of the pressure measuring and releasing mechanism, overlarge pressure can be detected and released when the ball valve is closed, the valve ball is protected, the service life of the ball valve is prolonged, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a three-piece floating ball valve with internal and external threaded connection. Background Technology

[0002] In fluid transport and control systems, ball valves are widely used as an important control element in various industrial and civil fields. Three-piece threaded floating ball valves, due to their compact structure, convenient installation, and good sealing performance, occupy an important position among many types of ball valves.

[0003] In practical applications, ball valves often face various complex working environments, especially in high-pressure fluid transportation scenarios. When a ball valve is in the closed position, if the fluid pressure in the pipeline suddenly increases, such as due to abnormal operation of an upstream pump, pipeline blockage, or other unexpected situations, the valve body will be subjected to enormous pressure. This excessive pressure can cause serious damage to the internal components of the ball valve, especially the ball. As a key component for the ball valve to achieve its opening, closing, and sealing functions, the ball may deform or fail to seal under prolonged excessive pressure, thus affecting the normal use of the ball valve, shortening its service life, and even potentially causing safety accidents such as fluid leakage, posing safety hazards and economic losses to production and daily life.

[0004] Currently, although some valves with pressure detection and pressure relief functions exist on the market, these valves often have shortcomings in terms of structural design, functional implementation, and reliability. For example, some valves only have simple pressure detection functions and cannot effectively and promptly relieve pressure when it is too high. Therefore, we propose a three-piece internal and external threaded floating ball valve to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing valves that only have simple pressure detection functions and cannot effectively and promptly relieve pressure when it is too high, and to propose a three-piece floating ball valve with internal and external threaded connections.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A three-piece internal and external threaded floating ball valve includes a valve body, two annular valve discs symmetrically fixedly installed inside the valve body, a valve ball sandwiched between the two valve discs, a valve stem fixedly connected to the top of the valve ball, and the top of the valve stem extending to the top of the valve body and threadedly connected to a handle. The valve valve also includes:

[0008] The pressure measuring mechanism penetrates the inner wall of one side of the top of the valve body and is fixedly connected. It includes a support cover, a force plate that is slidably connected in the support cover, and a pressure sensor fixed to the inner wall of the top of the support cover. The force plate is connected to the pressure plate through a push rod, and the pressure plate cooperates with the pressure sensor.

[0009] The pressure relief mechanism includes a flow shroud fixedly mounted on a push rod, a force plate with multiple flow holes communicating with the flow shroud, the flow shroud being connected to an installation pipe via a telescopic pipe, and a sealing component controlled by a magnetic attraction component being installed inside the installation pipe.

[0010] When the pressure inside the valve body is too high, the liquid pushes the force plate to make the pressure sensor detect the pressure. At the same time, the liquid flows into the flow cover through the flow hole, and the magnetic suction component controls the opening of the sealing component to discharge the liquid through the telescopic pipe and the installation pipe.

[0011] In one possible design, the telescopic pipe includes:

[0012] Support tube, fixedly connected to the inner wall of the top of the flow hood;

[0013] The connecting pipe slides inside the support pipe and extends to the outside of the support cover; the connecting pipe is fixedly connected to the installation pipe.

[0014] In one possible design, the enclosed component includes:

[0015] A closed ring is fixedly installed inside the mounting pipe;

[0016] The enclosed cover is slidably installed inside the mounting tube and extends to the enclosed ring on one side. Two drainage holes are opened on the inner wall of the enclosed cover.

[0017] When the sealing cover is tightly fitted to the inner wall of the sealing ring, the drainage hole is sealed.

[0018] In one possible design, the magnetic attraction component includes:

[0019] Two support rods are symmetrically fixed inside the mounting tube;

[0020] The movable frame is slidably mounted on the support rod and fixedly connected to the enclosed cover.

[0021] Four electromagnet rings are fixed in pairs to the inner wall of the mounting tube and the movable frame, respectively.

[0022] A compression spring is fitted onto a support rod and connected to a closed ring and a movable frame.

[0023] In one possible design, the electromagnet ring is electrically connected to a pressure sensor via a processor. When the pressure sensor detects that the pressure exceeds a threshold, the processor controls the electromagnet ring to de-energize, causing the closure to move and open the drain hole.

[0024] In one possible design, the support cover is connected to the inner cavity of the valve body, and when the valve ball is closed, liquid can flow into the support cover to push the force plate.

[0025] In one possible design, the push rod is fixedly connected to the center of the top of the force plate, and the pressure plate is slidably connected to the inner wall of the support cover.

[0026] In one possible design, one end of the mounting pipe is fixedly connected to a connector for connecting an external drainage pipe.

[0027] In one possible design, the valve body, valve disc, and valve ball form a three-piece structure, with the valve disc connected to the valve body via threads.

[0028] In this application, after connecting the valve to a pipeline for conveying liquid materials, rotating the handle causes the valve ball to rotate via the valve stem. When the valve ball is in communication with the two valve discs, the liquid material can be conveyed through the ball valve. When it is necessary to block the conveying of liquid materials, rotating the handle can rotate the valve ball to a position where it is not in communication with the two valve discs. At this time, the liquid entering the ball valve flows into the support cover, which pushes the force plate upward. This applies pressure to the pressure sensor through the push rod and pressure plate, allowing the pressure sensor to detect the hydraulic pressure. Under normal conditions, the two corresponding electromagnet rings remain energized. It can engage, allowing the sealing ring to block the two drain holes, preventing liquid material from being discharged. When the pressure sensor detects excessive pressure, the processor can de-energize the four pressure sensors. At this time, the sealing cover can move under hydraulic pressure, releasing the sealing ring from blocking the two drain holes. Liquid material can then flow into the installation pipe from the flow hole, flow cover, support pipe, and connecting pipe. After passing through the sealing cover and the two drain holes, the liquid material can pass through the installation pipe and finally be transported through the drainage pipe connected to the connector, thereby protecting the valve ball and preventing excessive pressure in the valve body.

[0029] Beneficial effects: In this utility model, the three-piece internal and external threaded floating ball valve, through the pressure measuring mechanism, can apply pressure to the push component when the ball valve is closed, at which time the liquid entering the ball valve will flow into the support cover. This can cause the push component to apply pressure to the pressure sensor, and the pressure sensor can detect the hydraulic pressure inside the ball valve after being pressurized.

[0030] In this utility model, the three-piece internal and external threaded floating ball valve, through the pressure relief mechanism, allows the liquid to flow into the flow cover through multiple flow holes when pushing the force plate upward, and then into the sealing assembly through the telescopic pipe. After opening the sealing assembly, the liquid can be easily discharged, thereby relieving the pressure inside the ball valve.

[0031] In practical use, this invention can detect the hydraulic pressure inside the valve body when the ball valve is closed, and can discharge liquid materials when the hydraulic pressure is too high to achieve the purpose of pressure relief. Thus, it can protect the valve ball in actual use and has good practicality. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the three-piece internal and external threaded floating ball valve proposed in this utility model.

[0033] Figure 2 This is a three-dimensional cross-sectional structural diagram of the three-piece internal and external threaded floating ball valve proposed in this utility model.

[0034] Figure 3 This is a three-dimensional cross-sectional schematic diagram of the support cover structure of the three-piece internal and external threaded floating ball valve proposed in this utility model.

[0035] Figure 4 This is a three-dimensional schematic diagram of the connection structure of the force plate, flow cover, push rod and support pipe of the three-piece internal and external threaded floating ball valve proposed in this utility model.

[0036] Figure 5 This is a three-dimensional cross-sectional schematic diagram of the mounting pipe structure of the three-piece internal and external threaded floating ball valve proposed in this utility model.

[0037] In the diagram: 1. Valve body; 2. Valve disc; 3. Valve ball; 4. Valve stem; 5. Handle; 6. Support cover; 7. Force plate; 8. Push rod; 9. Pressure plate; 10. Pressure sensor; 11. Flow hole; 12. Flow cover; 13. Support pipe; 14. Connecting pipe; 15. Mounting pipe; 16. Connector; 17. Sealing ring; 18. Support rod; 19. Moving frame; 20. Sealing cover; 21. Electromagnetic ring; 22. Compression spring. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0039] In one embodiment: Refer to Figure 1-5 A ball valve includes a valve body 1, two annular valve discs 2 are symmetrically fixedly installed inside the valve body 1, a valve ball 3 is sandwiched between the two valve discs 2, a valve stem 4 is fixedly installed on the top of the valve ball 3, and a handle 5 is fixedly installed on the top of the valve stem 4 above the valve body 1 by thread.

[0040] The floating ball valve also includes a pressure measuring mechanism that penetrates the inner wall of the top side of the valve body 1 and is fixedly connected to the inner wall of the top side of the valve body 1, as well as a pressure relief mechanism connected to the pressure measuring mechanism.

[0041] The pressure measuring mechanism includes a support cover 6 that penetrates the inner wall of one side of the top of the valve body 1 and is fixedly connected to the inner wall of the top of the valve body 1. A pushing assembly is installed inside the support cover 6, and a pressure sensor 10 is fixedly installed on the inner wall of the top of the support cover 6. The pushing assembly cooperates with the pressure sensor 10, and a pressure relief mechanism is connected to the pushing assembly. When the ball valve is closed, the liquid at the inlet of the ball valve enters the ball valve and flows into the support cover 6, applying pressure to the pushing assembly. This causes the pushing assembly to apply pressure to the pressure sensor 10, allowing the pressure sensor 10 to detect the hydraulic pressure inside the ball valve after being pressurized.

[0042] The actuating assembly includes a force-bearing plate 7 tightly slidably connected within the support cover 6. A push rod 8 is fixedly mounted at the top center of the force-bearing plate 7, and a pressure plate 9 is fixedly mounted at the top of the push rod 8. The pressure plate 9 is slidably connected to the inner wall of the support cover 6. After liquid enters the support cover 6, it pushes the force-bearing plate 7 upward, thereby applying pressure to the pressure sensor 10 through the push rod 8 and the pressure plate 9, allowing the pressure sensor 10 to detect the hydraulic pressure.

[0043] The pressure relief mechanism includes a flow cover 12 fixedly mounted on the push rod 8. The flow cover 12 is fixedly installed on the top of the force plate 7. Multiple flow holes 11 are evenly spaced on the force plate 7, and the flow holes 11 communicate with the flow cover 12. A telescopic pipe is installed on the inner wall of one side of the top of the flow cover 12. The top end of the telescopic pipe penetrates one side of the inner wall of the support cover 6 and extends to the outside of the support cover 6. The telescopic pipe is connected to one side of the inner wall of the support cover 6, and a sealing component is connected to the top end of the telescopic pipe. The sealing component is connected to an external drainage pipe. When the liquid pushes the force plate 7 upward, it can also flow into the flow cover 12 through the multiple flow holes 11, and then flow into the sealing component through the telescopic pipe. After opening the sealing component, the liquid can be easily discharged, thereby relieving pressure in the ball valve.

[0044] The telescopic conduit includes a support pipe 13 that penetrates the inner wall of one side of the top of the flow shroud 12 and is fixedly connected to the inner wall of the top of the flow shroud 12. A connecting pipe 14 is slidably connected inside the support pipe 13. The top end of the connecting pipe 14 penetrates the inner wall of one side of the support shroud 6 and extends to the outside of the support shroud 6. The connecting pipe 14 is fixedly connected to the inner wall of one side of the support shroud 6, and one end of the connecting pipe 14 is connected to the sealing assembly. By utilizing the sliding connection between the support pipe 13 and the connecting pipe 14, the liquid can be allowed to flow during depressurization without affecting the normal movement of the stress plate 7.

[0045] This application can be used in the field of valve technology, or in other fields applicable to this application.

[0046] In another embodiment: Reference Figure 5 An improvement upon Embodiment 1: A three-piece internally and externally threaded floating ball valve, applied in the field of valve technology, includes a sealing assembly comprising an installation tube 15 fixedly fitted onto the top of a connecting tube 14. One end of the installation tube 15 is fixedly fitted with a connector 16 for connection to an external drainage pipe. A sealing ring 17 is fixedly installed inside the installation tube 15. A sealing cover 20 is also provided inside the installation tube 15, with one side extending into the sealing ring 17 and tightly fitting against the inner wall of the sealing ring 17. Two drainage holes are symmetrically formed on the inner wall of the sealing cover 20, and the sealing ring 17 is used to seal the two drainage holes. A magnetic suction component is also installed inside the installation tube 15, connected to the sealing cover 20, and electrically connected to a pressure sensor 10 via a processor. When the pressure sensor 10 detects that the hydraulic pressure is too high, it can drive the magnetic suction mechanism to move, thereby moving the sealing cover 20 and releasing the sealing ring 17 from blocking the two drain holes. This allows the liquid entering the installation pipe 15 to be discharged through the sealing cover 20 and the two drain holes, and finally transported through the drainage pipe connected to the connector 16, thereby protecting the valve ball 3 and preventing excessive pressure in the valve body 1.

[0047] The magnetic attraction component includes two support rods 18 symmetrically fixedly installed inside the mounting tube 15. A common movable frame 19 is slidably mounted on the two support rods 18, and a sealing cover 20 is fixedly installed on one side of the movable frame 19. It also includes four electromagnet rings 21, each electrically connected to the processor. The four electromagnet rings 21 are fixedly mounted in pairs on one side of the inner wall of the mounting tube 15 and on the other side of the movable frame 19. Corresponding pairs of electromagnet rings 21 attract each other, and the electromagnet rings 21 are fitted onto the support rods 18. Compression springs 22 are fitted onto the support rods 18, and the compression springs 22 are connected to one side of the sealing ring 17 and the other side of the movable frame 19 via hooks at both ends. In normal operation, the corresponding pairs of electromagnet rings 21 are energized and can attract each other, allowing the sealing ring 17 to block the two drain holes. When the pressure sensor 10 detects excessive pressure, the processor can de-energize the four electromagnet rings 21. At this time, the sealing cover 20 can move under the action of hydraulic pressure, so that the liquid can be discharged from the two drain holes.

[0048] However, as is well known to those skilled in the art, the working principles and wiring methods of the pressure sensor 10, the electromagnet ring 21, and the processor are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A three-piece internal and external threaded floating ball valve, comprising a valve body (1), two annular valve discs (2) symmetrically fixedly installed inside the valve body (1), a valve ball (3) sandwiched between the two valve discs (2), a valve stem (4) fixedly connected to the top of the valve ball (3), and the top of the valve stem (4) extending above the valve body (1) and threadedly connected to a handle (5), characterized in that, Also includes: The pressure measuring mechanism penetrates the inner wall of the top side of the valve body (1) and is fixedly connected. It includes a support cover (6), a force plate (7) slidably connected in the support cover (6), and a pressure sensor (10) fixed to the inner wall of the top of the support cover (6). The force plate (7) is connected to the pressure plate (9) through the push rod (8). The pressure plate (9) cooperates with the pressure sensor (10). The pressure relief mechanism includes a flow cover (12) fixedly mounted on the push rod (8), and multiple flow holes (11) connected to the flow cover (12) are opened on the force plate (7). The flow cover (12) is connected to the installation pipe (15) through a telescopic pipe. The installation pipe (15) is equipped with a closed component controlled by a magnetic suction component. When the pressure inside the valve body (1) is too high, the liquid pushes the force plate (7) to make the pressure sensor (10) detect the pressure. At the same time, the liquid flows into the flow cover (12) through the flow hole (11), and the magnetic suction component controls the opening of the sealing component to discharge the liquid through the telescopic pipe and the installation pipe (15).

2. The three-piece internal and external threaded floating ball valve according to claim 1, characterized in that, The telescopic pipe includes: Support tube (13) is fixedly connected to the inner wall of the top of the flow hood (12); The connecting pipe (14) is slidably connected inside the support pipe (13) and extends to the outside of the support cover (6). The connecting pipe (14) is fixedly connected to the mounting pipe (15).

3. The three-piece internal and external threaded floating ball valve according to claim 2, characterized in that, The enclosed component includes: A closed ring (17) is fixedly installed inside the mounting tube (15); The enclosed cover (20) is slidably disposed inside the mounting tube (15) and extends on one side into the enclosed ring (17). Two drainage holes are opened on the inner wall of the enclosed cover (20). When the sealing cover (20) is tightly fitted to the inner wall of the sealing ring (17), the drainage hole is sealed.

4. The three-piece internal and external threaded floating ball valve according to claim 3, characterized in that, The magnetic attraction component includes: Two support rods (18) are symmetrically fixed inside the mounting tube (15); The movable frame (19) is slidably mounted on the support rod (18) and fixedly connected to the enclosed cover (20); Four electromagnet rings (21) are fixed in pairs to the inner wall of the mounting tube (15) and the movable frame (19); A compression spring (22) is fitted onto a support rod (18) and connected to a closed ring (17) and a movable frame (19).

5. The three-piece internal and external threaded floating ball valve according to claim 4, characterized in that, The electromagnet ring (21) is electrically connected to the pressure sensor (10) through the processor. When the pressure sensor (10) detects that the pressure exceeds the threshold, the processor controls the electromagnet ring (21) to be de-energized so that the sealing cover (20) moves to open the drain hole.

6. The three-piece internal and external threaded floating ball valve according to any one of claims 1-5, characterized in that, The support cover (6) is connected to the inner cavity of the valve body (1). When the valve ball (3) is closed, liquid can flow into the support cover (6) to push the force plate (7).

7. The three-piece internal and external threaded floating ball valve according to claim 6, characterized in that, The push rod (8) is fixedly connected to the center of the top of the force plate (7), and the pressure plate (9) is slidably connected to the inner wall of the support cover (6).

8. The three-piece internal and external threaded floating ball valve according to claim 7, characterized in that, One end of the installation pipe (15) is fixedly connected to a connector (16) for connecting an external drainage pipe.

9. The three-piece internal and external threaded floating ball valve according to claim 1, characterized in that, The valve body (1), valve disc (2) and valve ball (3) form a three-piece structure, and the valve disc (2) is connected to the valve body (1) by a thread.

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