Fluorine-lined ball valve

Abstract

The utility model discloses a fluorine lining ball valve which comprises an installation bottom plate and a ball valve body, a constant temperature box is fixedly installed at the upper end of the installation bottom plate, a medium inlet and a medium outlet are formed in the front end and the rear end of the ball valve body respectively, and the portion, in contact with a medium, of the interior of the ball valve body is completely covered with a fluorine plastic layer in a lining mode. A fluorine valve seat is fixedly installed in the ball valve body, a ball body is movably connected to the inner wall of the fluorine valve seat in an attached mode, a sealing sleeve is fixedly installed in the middle of the upper end of the ball valve body, a valve rod is rotationally connected to the middle of the sealing sleeve through a rotating shaft, and a protection box is fixedly installed on the outer side of the upper end of the sealing sleeve. And a driving motor is fixedly installed on the outer side wall of the protection box, a first synchronous wheel is fixedly installed on a transmission shaft part on the inner side of the driving motor, and the outer end of the first synchronous wheel is in transmission connection with a second synchronous wheel through a synchronous belt. The ball valve body is convenient to operate, the service life of the ball valve body to strong corrosive fluid is prolonged, and the stability of the ball valve body to the strong corrosive fluid is improved.

Description

Technical Field

[0001] This utility model relates to the field of fluid control equipment technology, specifically to a fluoropolymer-lined ball valve. Background Technology

[0002] The opening and closing element of a ball valve is a ball with a circular through-hole. This ball is driven by the valve stem and rotates around the valve's axis. During opening and closing, the ball rotates around its central axis. When the ball rotates to a specific position, its orifice aligns with or offsets from the valve body's passage, thus controlling the flow of fluid. The main functions of a ball valve include:

[0003] Medium Connection and Disconnection: Ball valves are primarily used to disconnect or connect the medium in a pipeline, controlling the flow by rotating the ball. When the ball's orifice aligns with the pipeline, the valve opens, allowing fluid to flow freely; when the ball rotates 90°, the orifice becomes perpendicular to the pipeline, the valve closes, and the fluid is cut off. Flow Regulation and Control: While traditionally ball valves are mainly used to disconnect the medium, modern ball valve designs have incorporated throttling and flow control functions. For example, the V-shaped ball core of a V-type ball valve, combined with a hard alloy-faced metal seat, provides strong shearing force, making it particularly suitable for regulating and controlling media containing fibers or small solid particles. Changing the Flow Direction: Multi-way ball valves (such as three-way ball valves) can flexibly control the merging, splitting, and switching of flow directions in pipelines, and can also close any channel while connecting the other two.

[0004] However, in practical applications, such as in the chemical, petroleum, and pharmaceutical industries, where highly corrosive fluids are frequently handled, traditional metal valves often struggle to meet the requirements for long-term stable operation. Although some valve products on the market use non-metallic linings (such as polytetrafluoroethylene PTFE), these products often suffer from inconvenient operation and unstable sealing performance, thus affecting the effectiveness of ball valves. Utility Model Content

[0005] The purpose of this invention is to provide a PTFE-lined ball valve to address the issues raised in the background section regarding the frequent handling of highly corrosive fluids in industries such as chemical, petroleum, and pharmaceutical. Traditional metal valves often fail to meet the requirements for long-term stable operation. While some valves on the market use non-metallic linings (such as polytetrafluoroethylene (PTFE), these products often suffer from inconvenient operation and unstable sealing performance, thus affecting the effectiveness of the ball valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a mounting base plate and a ball valve body. A constant temperature chamber is fixedly mounted on the upper end of the mounting base plate. The front and rear ends of the ball valve body are respectively provided with a medium inlet and a medium outlet. The interior of the ball valve body, where it contacts the medium, is fully lined with a fluoroplastic layer. A fluoropolymer valve seat is fixedly mounted inside the ball valve body. A ball is movably connected to the inner wall of the fluoropolymer valve seat. A sealing sleeve is fixedly mounted on the middle of the upper end of the ball valve body. A valve stem is rotatably connected to the middle of the sealing sleeve via a rotating shaft. A protective box is fixedly mounted on the outer side of the upper end of the sealing sleeve. A drive motor is fixedly mounted on the outer wall of the protective box. A first synchronous pulley is fixedly mounted on the inner drive shaft of the drive motor. A second synchronous pulley is connected to the outer end of the first synchronous pulley via a synchronous belt. A drive shaft column is fixedly mounted on the middle of the second synchronous pulley. A worm gear is fixedly mounted on the outer curved surface of the middle of the drive shaft column. A worm wheel is meshed with the outer side of the worm gear.

[0007] The outer wall of the constant temperature chamber has a heat dissipation vent, the inner wall of the heat dissipation vent is supported and fixedly installed with a heat dissipation fan, the outer opening of the heat dissipation vent is hinged with a sealing cover, and the inner wall of the constant temperature chamber is supported and fixedly installed with an electric heating tube.

[0008] Preferably, the mounting base plate has four through-holes at its four corners, which are symmetrically distributed around the four corners of the mounting base plate.

[0009] Preferably, the ball valve body is fixedly installed in the middle of the ball valve body, and the medium inlet and medium outlet are respectively connected to external pipelines through connecting flanges.

[0010] Preferably, the fluoroplastic layer is composed of high-performance fluoroplastic, the fluoro valve seat is composed of special rubber and fluoroplastic, and the outer curved surface of the sphere is coated with fluoroplastic.

[0011] Preferably, the bottom of the valve stem is fixedly installed on the upper end of the ball, a control panel is fixedly installed on the front end of the protective box, and a control power supply is fixedly installed on the top of the protective box.

[0012] Preferably, the drive shaft is rotatably connected to the inner wall of the protective box via a rotating shaft, and the worm gear is fixedly installed on the upper end of the valve stem.

[0013] Preferably, a temperature sensor is fixedly installed inside the constant temperature chamber, and there are several heat dissipation vents symmetrically distributed on the outer side wall of the constant temperature chamber, and several electric heating tubes symmetrically distributed on the inner wall of the constant temperature chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When the drive motor is turned on, this utility model drives the first synchronous pulley to rotate. When the first synchronous pulley rotates, it drives the second synchronous pulley to rotate via a synchronous belt. When the second synchronous pulley rotates, it drives the drive shaft to rotate. When the drive shaft rotates, it meshes with and drives the worm gear to rotate. When the worm gear rotates, it drives the valve stem to rotate. When the valve stem rotates, it drives the ball to rotate. When the ball rotates, it cooperates with the fluoropolymer valve seat to allow the medium passing through the ball valve body to flow or block it. At the same time, the fluoropolymer layer ensures the long-term resistance of the ball valve body to various highly corrosive media. Thus, while making the ball valve body easy to operate, it also improves the service life and stability of the ball valve body against highly corrosive fluids.

[0016] This invention also monitors the ambient temperature of the ball valve body using a temperature sensor fixedly installed inside the constant temperature chamber. When the ambient temperature of the ball valve body is low, the electric heating element is activated to heat the inside of the constant temperature chamber, thereby raising the ambient temperature of the ball valve body. When the ambient temperature of the ball valve body is high, the sealing cover is opened, which activates the cooling fan. When the cooling fan is activated, it works with the heat dissipation vents to ventilate and dissipate heat inside the constant temperature chamber, thereby lowering the ambient temperature of the ball valve body. This achieves the function of regulating the ambient temperature of the ball valve body, preventing the ambient temperature of the ball valve body from being too high or too low, which could affect the service life of the ball valve body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a fluoropolymer-lined ball valve according to this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of a fluoropolymer-lined ball valve according to this utility model. Figure 2 ;

[0019] Figure 3 This is a partial structural diagram of a fluoropolymer-lined ball valve according to the present invention;

[0020] Figure 4 This is a cross-sectional schematic diagram of the overall structure of a fluoropolymer-lined ball valve according to this utility model.

[0021] In the diagram: 1. Mounting base plate; 2. Ball valve body; 3. Mounting hole; 4. Constant temperature chamber; 5. Medium inlet; 6. Medium outlet; 7. Fluoroplastic layer; 8. Fluoropolymer valve seat; 9. Ball; 10. Sealing sleeve; 11. Valve stem; 12. Protective box; 13. Drive motor; 14. First synchronous pulley; 15. Second synchronous pulley; 16. Drive shaft column; 17. Worm gear; 18. Worm wheel; 19. Heat dissipation port; 20. Cooling fan; 21. Sealing cover; 22. Electric heating element. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a fluoropolymer-lined ball valve technical solution: including a mounting base plate 1 and a ball valve body 2. The mounting base plate 1 has four mounting holes 3 through its four corners, which are symmetrically distributed at the four corners of the mounting base plate 1, so that the mounting base plate 1 can be installed and fixed through the mounting holes 3 and mounting bolts. A constant temperature chamber 4 is fixedly installed on the upper end of the mounting base plate 1, and the ball valve body 2 is fixedly installed through the middle of the ball valve body 2, so that the constant temperature chamber 4 provides constant temperature protection for the ball valve body 2.

[0024] The ball valve body 2 has a medium inlet 5 and a medium outlet 6 at its front and rear ends, respectively. The medium inlet 5 and medium outlet 6 are connected to external pipelines via connecting flanges. The interior of the ball valve body 2, where it contacts the medium, is fully lined with a fluoroplastic layer 7, which is composed of high-performance fluoroplastic. This ensures the long-term resistance of the ball valve body 2 to various highly corrosive media. A fluoroplastic valve seat 8 is fixedly installed inside the ball valve body 2. The fluoroplastic valve seat 8 is composed of special rubber and fluoroplastic. A ball 9 is movably connected to the inner wall of the fluoroplastic valve seat 8, and the outer curved surface of the ball 9 is coated with fluoroplastic to enhance the sealing effect between the fluoroplastic valve seat 8 and the ball 9 and reduce friction and wear. A sealing sleeve 10 is fixedly installed at the middle of the upper end of the ball valve body 2. The middle of the sealing sleeve 10 rotates via a shaft. A valve stem 11 is connected, and the bottom of the valve stem 11 is fixedly installed on the upper end of the ball 9. A protective box 12 is fixedly installed on the outer side of the upper end of the sealing sleeve 10, and a control panel is fixedly installed on the front end of the protective box 12. A control power supply is fixedly installed on the top of the protective box 12. A drive motor 13 is fixedly installed on the outer wall of the protective box 12. A first synchronous pulley 14 is fixedly installed on the inner drive shaft of the drive motor 13. A second synchronous pulley 15 is connected to the outer end of the first synchronous pulley 14 through a synchronous belt. A drive shaft column 16 is fixedly installed in the middle of the second synchronous pulley 15, and the drive shaft column 16 is rotatably connected to the inner wall of the protective box 12 through a rotating shaft. A worm gear 17 is fixedly installed on the outer curved surface of the middle of the drive shaft column 16. A worm wheel 18 is meshed with the outer side of the worm gear 17, and the worm wheel 18 is fixedly installed on the upper end of the valve stem 11.

[0025] A temperature sensor is fixedly installed inside the constant temperature chamber 4 to monitor the internal temperature environment. A number of heat dissipation vents 19 are provided on the outer wall of the constant temperature chamber 4 and are symmetrically distributed on the outer wall of the constant temperature chamber 4. A cooling fan 20 is fixedly installed on the inner wall of the heat dissipation vent 19. A sealing cover 21 is hinged to the outer opening of the heat dissipation vent 19. An electric heating tube 22 is fixedly installed on the inner wall of the constant temperature chamber 4 and is symmetrically distributed on the inner wall of the constant temperature chamber 4.

[0026] Working principle: In use, this utility model controls the drive motor 13 to turn on via the control panel. When the drive motor 13 is turned on, it drives the first synchronous pulley 14 to rotate. When the first synchronous pulley 14 rotates, it drives the second synchronous pulley 15 to rotate via the synchronous belt. When the second synchronous pulley 15 rotates, it drives the transmission shaft column 16 to rotate. When the transmission shaft column 16 rotates, it meshes with and drives the worm gear 18 to rotate. When the worm gear 18 rotates, it drives the valve stem 11 to rotate. When the valve stem 11 rotates, it drives the ball 9 to rotate. When the ball 9 rotates, it cooperates with the fluoropolymer valve seat 8 to allow the medium passing through the ball valve body 2 to flow or block it. At the same time, the fluoropolymer layer 7 ensures the long-term resistance of the ball valve body 2 to various highly corrosive media, thereby making the ball valve body 2 easy to operate while improving the service life and stability of the ball valve body 2 for highly corrosive fluids.

[0027] Meanwhile, the ambient temperature of the ball valve body 2 is monitored by a temperature sensor fixedly installed inside the constant temperature chamber 4. When the ambient temperature of the ball valve body 2 is low, the electric heating tube 22 is turned on to heat the inside of the constant temperature chamber 4, thereby raising the ambient temperature of the ball valve body 2. When the ambient temperature of the ball valve body 2 is high, the sealing cover 21 is opened to activate the cooling fan 20. When the cooling fan 20 is turned on, it works with the heat dissipation vent 19 to ventilate and dissipate heat inside the constant temperature chamber 4, thereby lowering the ambient temperature of the ball valve body 2. This achieves the function of regulating the ambient temperature of the ball valve body 2, preventing the ambient temperature of the ball valve body 2 from being too high or too low, which would affect the service life of the ball valve body 2.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fluoropolymer-lined ball valve, characterized in that: The device includes a mounting base plate (1) and a ball valve body (2). A constant temperature chamber (4) is fixedly installed on the upper end of the mounting base plate (1). The ball valve body (2) has a medium inlet (5) and a medium outlet (6) at its front and rear ends, respectively. The ball valve body (2) is fully lined with a fluoroplastic layer (7) at the parts in contact with the medium. A fluoropolymer valve seat (8) is fixedly installed inside the ball valve body (2). A ball (9) is movably connected to the inner wall of the fluoropolymer valve seat (8). A sealing sleeve (10) is fixedly installed in the middle of the upper end of the ball valve body (2). A valve is rotatably connected to the middle of the sealing sleeve (10) via a rotating shaft. The rod (11) has a protective box (12) fixedly installed on the outer side of the upper end of the sealing sleeve (10). A drive motor (13) is fixedly installed on the outer wall of the protective box (12). A first synchronous pulley (14) is fixedly installed on the inner drive shaft of the drive motor (13). A second synchronous pulley (15) is connected to the outer end of the first synchronous pulley (14) via a synchronous belt. A drive shaft column (16) is fixedly installed in the middle of the second synchronous pulley (15). A worm (17) is fixedly installed on the outer curved surface of the middle of the drive shaft column (16). A worm wheel (18) is meshed with the outer side of the worm (17). The constant temperature chamber (4) has a heat dissipation vent (19) on its outer side wall. A heat dissipation fan (20) is fixedly installed on the inner wall of the heat dissipation vent (19). A sealing cover (21) is hinged to the outer opening of the heat dissipation vent (19). An electric heating tube (22) is fixedly installed on the inner wall of the constant temperature chamber (4).

2. The PTFE-lined ball valve according to claim 1, characterized in that: The mounting base plate (1) has four through holes (3) at its four corners, and the number of mounting holes (3) is four, which are symmetrically distributed at the four corners of the mounting base plate (1).

3. A fluoropolymer-lined ball valve according to claim 2, characterized in that: The ball valve body (2) is fixedly installed in the middle of the ball valve body (2), and the medium inlet (5) and medium outlet (6) are connected to the external pipeline through connecting flanges respectively.

4. A fluoropolymer-lined ball valve according to claim 3, characterized in that: The fluoroplastic layer (7) is composed of high-performance fluoroplastics, the fluoro valve seat (8) is composed of special rubber and fluoroplastics, and the outer curved surface of the sphere (9) is coated with fluoroplastics.

5. A fluoropolymer-lined ball valve according to claim 4, characterized in that: The bottom of the valve stem (11) is fixedly installed on the upper end of the ball (9), the front end of the protective box (12) is fixedly installed with a control panel, and the top of the protective box (12) is fixedly installed with a control power supply.

6. A fluoropolymer-lined ball valve according to claim 5, characterized in that: The drive shaft column (16) is rotatably connected to the inner wall of the protective box (12) via a rotating shaft, and the worm gear (18) is fixedly installed on the upper end of the valve stem (11).

7. A fluoropolymer-lined ball valve according to claim 6, characterized in that: A temperature sensor is fixedly installed inside the constant temperature chamber (4). There are several heat dissipation vents (19) symmetrically distributed on the outer side wall of the constant temperature chamber (4). There are several electric heating tubes (22) symmetrically distributed on the inner wall of the constant temperature chamber (4).

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