Flow-adjustable enamel ball valve
The enamel layer formed by high-temperature enamel firing at the overflow part of the ball valve solves the problems of medium leakage caused by the gap of the ceramic ball valve module and poor wear resistance of the fluoroplastic layer, achieving high corrosion resistance and wear resistance, and The pneumatic actuator and scale meter design improves the accuracy of flow regulation.
Patent Information
- Application Number
- CN202421769647.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing ceramic ball valves have gaps in the ceramic layer modules in the operating conditions of high corrosion and high wear media, resulting in leakage and corrosion of the medium. The fluoroplastic layer has poor wear resistance and cannot meet the requirements of high corrosion and high wear at the same time.
The enamel layer is attached to the valve body, valve cover and ball through high-temperature enamel burning, eliminating module gaps, increasing corrosion resistance and wear resistance, and achieving flow adjustment through pneumatic actuators and scale meter designs.
It achieves seamless high corrosion resistance and wear resistance, has a wider range of adaptation, more convenient processing, and more accurate flow adjustment.
Smart Images
Figure CN222334563U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of valves, and in particular relates to a corrosion-resistant and wear-resistant flow-adjustable enamel ball valve. Background Art
[0002] Ball valves are valves whose opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. They are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. They can be closed tightly by rotating 90 degrees and with a very small torque. They are widely used in the petroleum, chemical, power generation, papermaking and other industries. Under highly corrosive medium conditions, fluoroplastics are usually lined in the flow area of the ball valve to improve the corrosion resistance of the ball valve; under highly abrasive medium conditions, ceramic layers are usually lined to increase the service life of the ball valve. However, under highly corrosive and highly abrasive medium conditions, the fluoroplastic layer of the fluorine-lined ball valve has poor wear resistance, and although the ceramic ball valve is wear-resistant, since the ceramic layer generally adopts a modular splicing lining, there are gaps between each ceramic piece, and the highly corrosive medium can easily leak into the gaps and corrode the valve body. Both cannot meet the requirements of highly corrosive and highly abrasive medium conditions at the same time. Summary of the invention
[0003] The utility model aims to design a flow-adjustable enamel ball valve which is corrosion-resistant and wear-resistant in view of the defects of the prior art.
[0004] The technical solution of the utility model: a flow-adjustable ceramic ball valve, comprising a valve body, a valve cover, a ball, a valve seat, a valve stem, a bracket and a pneumatic actuator, the ball being installed in the inner cavity of the valve body, a valve seat being provided between the ball and the valve cover, the upper end of the ball being fixedly connected to the lower end of the valve stem, a sealing packing being provided between the valve stem and the valve body, a packing gland being provided above the sealing packing, a pressing sleeve being provided between the packing gland and the bracket, and the characteristic of the utility model is that the valve cover is divided into a left valve cover and a right valve cover, which are respectively installed on the left and right sides of the valve body, and the flow-through parts inside the valve body, the valve cover and the ball are all provided with an enamel layer; the bracket is fixedly installed on the upper end of the valve body, the pneumatic actuator is fixedly installed on the upper end of the bracket, the valve stem passes through the upper end of the bracket and is connected with the output end of the pneumatic actuator, a horizontal radial semicircular arc scale is provided in the bracket, and a pointer matching the scale is provided on the valve stem.
[0005] Preferably, an FKM isolation sealing gasket is provided between the upper end of the ball and the valve body, the upper surface of the FKM isolation sealing gasket is in sealing cooperation with the valve body, and the lower surface of the FKM isolation sealing gasket is in sealing cooperation with the ball.
[0006] Preferably, a support filler is provided between the valve stem and the support, and a support filler gland is press-fitted on top of the support filler via a pressure plate.
[0007] The advantage of the utility model is that the enamel layer is attached to the flow-through parts on the inside of the valve body, the valve cover and the sphere by enameling, and the enamel in the softened state can completely cover the flow-through parts of different shapes. Compared with the ceramic layer, the enamel layer has no connecting gaps between modules, and the coverage of the flow-through parts is more sufficient and the corrosion resistance is stronger; compared with the fluoroplastic layer, the enamel layer has stronger wear resistance, and it has both high wear resistance and high corrosion resistance, and has a wider range of adaptability and is more convenient to process; through the design of the scale and the pointer, the opening and closing angle of the ball valve can be accurately adjusted, and the flow regulation is more precise. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural schematic diagram of the utility model.
[0009] In the figure, 1, valve body, 2, valve body, 3, right valve cover, 4, left valve cover, 5, enamel layer, 6, right valve seat, 7, left valve seat, 8, FKM isolation gasket, 9, sealing packing, 10, packing gland, 11, valve stem, 12, pointer, 13, scale, 14, bracket, 15, pneumatic actuator, 16, bracket, 17, bracket packing, 18, pressure plate, 19, pressure sleeve, 20 mounting table. DETAILED DESCRIPTION
[0010] The utility model is further described according to the accompanying drawings.
[0011] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0012] like Figure 1The flow adjustable enameled ball valve shown in the figure comprises a valve body 1, a valve cover, a valve body 2, a valve seat, a valve stem 11, a bracket 14 and a pneumatic actuator 15. The valve body 2 is installed in the inner cavity of the valve body 1. A valve seat is provided between the valve body 2 and the valve cover. The sealing surfaces of the valve seat match the sealing surfaces of the valve body 2 and the valve cover respectively. The upper end of the valve body 2 is fixedly connected to the lower end of the valve stem 11. A sealing packing 9 is provided between the valve stem 11 and the valve body 1. A packing gland 10 is provided above the sealing packing 9. A pressing sleeve 19 is provided between the packing gland 10 and the bracket 14. The packing gland 10 is pressed onto the sealing packing 9 by the pressing sleeve 19 to achieve sealing between the valve stem 11 and the valve body 1. The valve cover is divided into a left valve cover 4 and a right valve cover 3, which are respectively arranged at the left and right ends of the valve body 1. The left valve cover 4 and the right valve cover 3 are connected by bolts and nuts, and the valve body is fixedly connected to the valve body 1. 1 is fixedly clamped between the two; the flow-through parts inside the valve body 1, the valve cover and the valve body 2 are provided with an enamel layer 5, and the enamel layer 5 is a protective layer formed by high-temperature enamel firing at the flow-through part, so that the ball valve has high wear resistance and corrosion resistance; the upper end of the valve body 1 is provided with a bracket 14, and the bracket 14 is fixedly installed on the valve body 1 by bolts, and a pneumatic actuator 15 is fixedly installed on the upper end of the bracket 14, and the valve stem 11 passes through the upper end of the bracket 14 and is connected to the output end of the pneumatic actuator 15, and a horizontal radial semicircular arc scale 13 is provided in the bracket 14, and mounting platforms 20 are provided at both ends of the inner wall of the bracket 14, and both ends of the scale 13 are fixed on the mounting platform 20 by screws, and a pointer 12 matching the scale 13 is provided on the valve stem 11, and the opening angle of the ball valve can be accurately adjusted according to the flow requirements.
[0013] An FKM isolation sealing gasket 8 is provided between the upper end of the valve body 2 and the valve body 1. The upper surface of the FKM isolation sealing gasket 8 is sealed with the valve body 1, and the lower surface of the FKM isolation sealing gasket 8 is sealed with the valve body 2, so as to further improve the sealing performance of the valve.
[0014] A sealing bracket packing 17 is provided between the valve stem 11 and the bracket 14. The bracket packing gland 16 is pressed onto the bracket packing 17 through a pressure plate 18. The pressure plate 18 is fixed to the bracket 14 by bolts, thereby further improving the sealing performance of the valve.
[0015] The above embodiments describe the present invention in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. Any changes and improvements made within the scope of the present invention should still fall within the scope of the patent of the present invention.
Claims
1. A flow-adjustable enamel ball valve, comprising a valve body (1), a valve cover, a ball (2), a valve seat, a valve stem (11), a bracket (14) and a pneumatic actuator (15), wherein the ball (2) is mounted in the inner cavity of the valve body (1), a valve seat is provided between the ball (2) and the valve cover, the upper end of the ball (2) is fixedly connected to the lower end of the valve stem (11), a sealing packing (9) is provided between the valve stem (11) and the valve body (1), a packing gland (10) is provided above the sealing packing (9), and a compression sleeve (19) is provided between the packing gland (10) and the bracket (14), wherein the valve body (1) is characterized in that The valve cover is divided into a left valve cover (4) and a right valve cover (3), which are respectively mounted on the left and right sides of the valve body (1); the flow passage parts inside the valve body (1), the valve cover and the ball (2) are all provided with an enamel layer (5); a bracket (14) is fixedly mounted on the upper end of the valve body (1); a pneumatic actuator (15) is fixedly mounted on the upper end of the bracket (14); the valve stem (11) passes through the upper end of the bracket (14) and is connected to the output end of the pneumatic actuator (15); a horizontal radial semicircular arc scale (13) is provided inside the bracket (14); and a pointer (12) matching the scale is provided on the valve stem (11).
2. The flow-adjustable enamel ball valve according to claim 1 is characterized in that An FKM isolation sealing gasket (8) is provided between the upper end of the spherical body (2) and the valve body (1); the upper surface of the FKM isolation sealing gasket (8) is in sealing cooperation with the valve body (1), and the lower surface of the FKM isolation sealing gasket (8) is in sealing cooperation with the spherical body (2).
3. The flow-adjustable enamel ball valve according to claim 1 or 2, characterized in that A support filler (17) is provided between the valve stem (11) and the support (14), and a support filler gland (10) is press-fitted onto the support filler (17) via a pressure plate (18).