Corrosion-resistant ball valve

Abstract

The utility model relates to the field of ball valves, and discloses a corrosion-resistant ball valve which comprises a first valve body, a second valve body and a ball body, the bottom face in the first valve body is rotationally connected with the ball body, a filtering mechanism is arranged in the second valve body, and the filtering mechanism comprises a filtering plate, a baffle and a fixing bolt. A mounting groove is formed in the middle of the lower end of the second valve body, the outer walls of the front end and the rear end of the filter plate are both slidably connected with the mounting groove, fixing blocks are fixedly connected to the outer walls of the two sides of the second valve body, the outer walls of the two sides of the baffle are both slidably connected with the fixing blocks, and a fixing plate is fixedly connected to the middle of the outer wall of the rear end of the baffle. The lower end of the fixing plate is in threaded connection with the fixing bolt. According to the utility model, the baffle plate is fixed on the second valve body by the fixing plate through the fixing bolt in the filter mechanism, so that the filter plate is fixed, and after the fixing bolt is screwed off, the baffle plate slides along the fixing block, so that the shielding of the mounting groove can be relieved, and the filter plate is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the field of ball valves, in particular to a corrosion-resistant ball valve. Background Art

[0002] A ball valve is a valve that uses a sphere with a hole as an opening and closing member, which rotates around an axis perpendicular to the valve stem to control the opening or closing of the valve. The corrosion-resistant ball valve is a special ball valve made of corrosion-resistant materials, and its seals are made of corrosion-resistant materials such as polytetrafluoroethylene to ensure that it can maintain good sealing performance during long-term use in corrosive media.

[0003] However, since the fluid flowing inside the valve body usually contains impurities, a filter plate is installed in the valve body for filtering. However, most of the corrosion-resistant ball valves currently available on the market are not convenient for disassembly and assembly of the internal filter plate, making it inconvenient for staff to clean or replace the filter plate.

[0004] Therefore, those skilled in the art provide a corrosion-resistant ball valve to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present utility model is to solve the shortcomings of the prior art and provide a corrosion-resistant ball valve. The baffle is fixed to the second valve body by means of a fixing plate through fixing bolts in the filter mechanism, so that the filter plate is fixed. After unscrewing the fixing bolts, the baffle is slid along the fixing block to remove the obstruction of the installation groove, thereby facilitating the disassembly and assembly of the filter plate.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A corrosion-resistant ball valve comprises a first valve body, a second valve body and a ball, the bottom surface of the inner part of the first valve body is rotatably connected to the ball, the interior of the second valve body is provided with a filter mechanism, the filter mechanism comprises a filter plate, a baffle and a fixing bolt, a mounting groove is provided in the middle of the lower end of the second valve body, the outer walls of the front end and the rear end of the filter plate are slidably connected to the mounting groove, the outer walls on both sides of the second valve body are fixedly connected to fixing blocks, the outer walls on both sides of the baffle are slidably connected to the fixing blocks, the middle of the outer wall of the rear end of the baffle is fixedly connected to a fixing plate, the lower end of the fixing plate is threadedly connected to the fixing bolt, the upper end of the fixing bolt passes through the fixing plate and is threadedly connected to the second valve body, and the upper end of the first valve body is fixedly connected to a pressure plate by a bolt;

[0008] Through the above technical solution, the baffle is fixed to the second valve body by means of the fixing bolts using the fixing plate, so that the filter plate is fixed. After unscrewing the fixing bolts, the baffle is slid along the fixing block to remove the obstruction of the installation groove, thereby facilitating the disassembly and assembly of the filter plate and making it convenient for the staff to clean or replace the filter plate.

[0009] Furthermore, the rear end of the first valve body is fixedly connected to a first flange, and the front end of the second valve body is fixedly connected to a second flange;

[0010] Through the above technical solution, the external pipeline can be fixed by using the first flange and the second flange fixedly connected on the first valve body and the second valve body in combination with multiple bolts and nuts, thereby allowing the valve to be connected to the pipeline system.

[0011] Furthermore, a first connection block is fixedly connected to the front end of the outer wall of the first valve body, and a second connection block is fixedly connected to the rear end of the outer wall of the second valve body, and the second connection block is fixedly connected to the first connection block by a plurality of bolts and nuts;

[0012] Through the above technical solution, by fixing the two bottom first connecting blocks and second connecting blocks on the first valve body and the second valve body, and using multiple bolts and nuts to fix the first connecting block and the second connecting block together, the first valve body and the second valve body can be firmly fixed together, wherein the first valve body and the second valve body are made of nickel-based alloy, have high temperature and high pressure resistance, and have good corrosion resistance.

[0013] Furthermore, a sealing ring is fixedly connected to the rear end of the second valve body, and the outer wall of the rear end of the sealing ring is tightly fitted with the first valve body;

[0014] Through the above technical solution, the first connecting block and the second connecting block are fixed together by multiple bolts and nuts, so that the first valve body and the second valve body are kept in contact with each other, and the gap between the two can be filled with a sealing ring to improve the sealing performance, wherein the sealing ring is made of polytetrafluoroethylene material.

[0015] Furthermore, the inner walls of the front end and the rear end of the installation groove are fixedly connected with sealing rings, and the sealing rings are tightly fitted with the filter plate;

[0016] Through the above technical solution, by fixing the two sealing rings in the installation groove, the sealing rings and the filter plate are tightly fitted, so that the gap between the filter plate and the installation groove is filled, preventing the fluid inside the second valve body from flowing out, wherein the sealing rings are made of polytetrafluoroethylene material.

[0017] Furthermore, the upper end of the sphere is fixedly connected to a valve stem, and the upper end of the valve stem passes through the first valve body and the pressure plate and is fixedly connected to a handle;

[0018] Through the above technical solution, by fixing the ball to the valve stem that passes through the first valve body and the pressure plate, and fixing a handle on the valve stem, the staff can use the handle to act on the ball through the valve stem, so that the ball can rotate inside the first valve body, change the direction of the hole on the ball, and change the opening and closing state of the valve.

[0019] Furthermore, a sealing filler is provided at the opening at the upper end of the first valve body, and the inner wall of the sealing filler is tightly fitted with the valve stem;

[0020] Through the above technical solution, a sealing packing made of polytetrafluoroethylene is arranged in the opening at the upper end of the first valve body, and is put on the valve stem. The pressure plate is firmly fixed to the first valve body using bolts and nuts, so that the inner wall of the sealing packing fits tightly against the valve stem, so that the gap between the valve stem and the first valve body is filled and blocked, thereby preventing the internal fluid from leaking out of the valve stem.

[0021] Furthermore, the rear end of the inner wall of the first valve body is fixedly connected to a first sealing block, the front end of the inner wall of the second valve body is fixedly connected to a second sealing block, and the outer walls of the front and rear ends of the sphere are tightly fitted with the second sealing block and the first sealing block respectively;

[0022] Through the above technical solution, the first sealing block and the second sealing block fixedly connected on the inner walls of the first valve body and the second valve body are tightly fitted with the sphere, so that the fit between the sphere and the valve body is tighter, preventing the fluid from leaking to the outside of the sphere when the opening of the sphere is perpendicular to the flow channel of the valve body, wherein the first sealing block and the second sealing block are both made of polytetrafluoroethylene material.

[0023] The utility model has the following beneficial effects:

[0024] The utility model proposes a corrosion-resistant ball valve, which fixes the baffle to the second valve body by means of a fixing plate through fixing bolts in the filter mechanism, so that the filter plate is fixed. After unscrewing the fixing bolts, the baffle is slid along the fixing block to release the obstruction of the installation groove, thereby facilitating the disassembly and assembly of the filter plate and making it convenient for staff to clean or replace the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the main structure of a corrosion-resistant ball valve proposed in the utility model;

[0026] Figure 2 This is an overall exploded view of a corrosion-resistant ball valve proposed in the utility model;

[0027] Figure 3 This is a side sectional view of a corrosion-resistant ball valve proposed in the utility model;

[0028] Figure 4This is an exploded diagram of a local mechanism of a corrosion-resistant ball valve proposed in the utility model;

[0029] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0030] Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0031] Description of reference numerals:

[0032] 1. First valve body; 2. First flange; 3. Second valve body; 4. Second flange; 5. First connecting block; 6. Second connecting block; 7. Ball; 8. Sealing ring; 9. Filter mechanism; 901. Mounting groove; 902. Sealing ring; 903. Filter plate; 904. Fixing block; 905. Baffle; 906. Fixing plate; 907. Fixing bolt; 10. Pressure plate; 11. Valve stem; 12. Handle; 13. Sealing packing; 14. First sealing block; 15. Second sealing block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the specific embodiments of the present invention to clearly and completely describe the technical solutions in the specific embodiments of the present invention. Obviously, the specific embodiments described are only part of the specific embodiments of the present invention, not all of the specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1-6 , The utility model provides a specific embodiment: a corrosion-resistant ball valve, comprising a first valve body 1, a second valve body 3 and a ball 7. The bottom surface of the interior of the first valve body 1 is rotatably connected to the ball 7. A filter mechanism 9 is provided inside the second valve body 3. The filter mechanism 9 includes a filter plate 903, a baffle 905 and a fixing bolt 907. A mounting groove 901 is opened in the middle of the lower end of the second valve body 3. The outer walls of the front and rear ends of the filter plate 903 are slidably connected to the mounting groove 901. The outer walls on both sides of the second valve body 3 are fixedly connected to fixing blocks 904. The outer walls on both sides of the baffle 905 are slidably connected to the fixing blocks 904. The middle part of the outer wall of the rear end of the baffle 905 is fixedly connected to a fixing plate 906. The lower end of the fixing plate 906 is threadedly connected to the fixing bolt 907. The upper end of the fixing bolt 907 passes through the fixing plate 906 and is threadedly connected to the second valve body 3. The upper end of the first valve body 1 is fixedly connected to a pressing plate 10 by bolts.

[0035] The baffle 905 is fixed to the second valve body 3 using the fixing plate 906 through the fixing bolts 907 in the filter mechanism 9, so that the filter plate 903 is fixed. After unscrewing the fixing bolts 907, the baffle 905 is slid along the fixing block 904 to remove the obstruction of the installation groove 901, thereby facilitating the disassembly and assembly of the filter plate 903 and making it convenient for the staff to clean or replace the filter plate 903.

[0036] The rear end of the first valve body 1 is fixedly connected to the first flange 2, and the front end of the second valve body 3 is fixedly connected to the second flange 4. The external pipeline can be fixed by cooperating with a plurality of bolts and nuts through the first flange 2 and the second flange 4 fixedly connected on the first valve body 1 and the second valve body 3, so that the valve can be connected to the pipeline system. The front end of the outer wall of the first valve body 1 is fixedly connected to the first connecting block 5, and the rear end of the outer wall of the second valve body 3 is fixedly connected to the second connecting block 6. The second connecting block 6 is fixedly connected to the first connecting block 5 by a plurality of bolts and nuts. By fixing the two bottom first connecting blocks 5 and the second connecting blocks 6 on the first valve body 1 and the second valve body 3, and fixing the first connecting block 5 and the second connecting block 6 together with a plurality of bolts and nuts, the first valve body 1 and the second valve body 3 can be firmly fixed together, wherein the first valve body 1 and the second valve body 3 are made of nickel-based alloy, which has high temperature resistance, high pressure resistance, and good corrosion resistance. The rear end of the second valve body 3 is fixedly connected with a sealing ring 8, and the outer wall of the rear end of the sealing ring 8 is tightly fitted with the first valve body 1. The first connecting block 5 and the second connecting block 6 are fixed together by multiple bolts and nuts, so that the first valve body 1 and the second valve body 3 are kept in contact, and the sealing ring 8 can be used to fill the gap between the two to improve the sealing performance. The sealing ring 8 is made of polytetrafluoroethylene material, and the inner walls of the front end and the rear end of the mounting groove 901 are fixedly connected with a sealing ring 902, which is tightly fitted with the filter plate 903. By 2 is fixed in the installation groove 901, so that the sealing ring 902 and the filter plate 903 are tightly fitted, so that the gap between the filter plate 903 and the installation groove 901 is filled, preventing the fluid inside the second valve body 3 from flowing out, wherein the sealing ring 902 is made of polytetrafluoroethylene material, and the upper end of the ball 7 is fixedly connected to the valve stem 11. The upper end of the valve stem 11 passes through the first valve body 1 and the pressure plate 10 and is fixedly connected to the handle 12. By fixing the ball 7 to the valve stem 11 that passes through the first valve body 1 and the pressure plate 10, and fixing a handle 12 on the valve stem 11, the staff can use the handle 12 to act on the ball 7 through the valve stem 11, so that the ball 7 can rotate inside the first valve body 1, change the direction of the hole on the ball 7, and change the valve In the open and closed state, a sealing packing 13 is provided at the opening at the upper end of the first valve body 1, and the inner wall of the sealing packing 13 fits tightly with the valve stem 11. A sealing packing 13 made of polytetrafluoroethylene is provided in the opening at the upper end of the first valve body 1, and is sleeved on the valve stem 11. The pressure plate 10 is firmly fixed to the first valve body 1 with bolts and nuts, so that the inner wall of the sealing packing 13 fits tightly with the valve stem 11, so that the gap between the valve stem 11 and the first valve body 1 is filled and blocked to prevent the internal fluid from leaking out of the valve stem 11. The rear end of the inner wall of the first valve body 1 is fixedly connected to the first sealing block 14, and the front end of the inner wall of the second valve body 3 is fixedly connected to the second sealing block 15. The outer walls of the front and rear ends of the ball 7 fit tightly with the second sealing block 15 and the first sealing block 14 respectively.The first and second sealing blocks 14, 15, fixedly connected to the inner walls of the first and second valve bodies 1, 3, fit tightly against the ball 7, ensuring a closer fit between the ball 7 and the valve body. This prevents fluid from leaking out of the ball 7 when the opening of the ball 7 is perpendicular to the flow channel of the valve body. Both the first and second sealing blocks 14, 15 are made of polytetrafluoroethylene.

[0037] Working principle: When using this corrosion-resistant ball valve, the staff first fixes the external pipeline through the first flange 2 and the second flange 4 fixedly connected on the first valve body 1 and the second valve body 3 with multiple bolts and nuts, and connects the valve to the pipeline system. Secondly, the staff uses the handle 12 to drive the ball 7 to rotate inside the first valve body 1 through the valve stem 11, changes the direction of the opening on the ball 7, and controls the opening and closing of the valve. The internal fluid flows in from one side of the filter plate 903 and flows out from one side of the first valve body 1 after being filtered. Finally, after the staff unscrews the fixing bolt 907, the baffle 905 slides along the fixing block 904 to remove the obstruction of the installation groove 901, and takes out the filter plate 903 for cleaning or replacement. After that, the baffle 905 is restored, and the fixing plate 906 is fixed to the second valve body 3 by the fixing bolt 907 to complete the installation of the filter plate 903.

[0038] In this article, there are several points to note:

[0039] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure. Other structures can refer to general designs.

[0040] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0041] Finally, it should be noted that the above is only a preferred specific implementation method of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned specific implementation methods, those skilled in the art can still modify the technical solutions described in the aforementioned specific implementation methods or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A corrosion-resistant ball valve, comprising a first valve body (1), a second valve body (3) and a ball (7), characterized in that: The bottom surface of the interior of the first valve body (1) is rotatably connected to the ball (7), and a filter mechanism (9) is provided inside the second valve body (3), the filter mechanism (9) comprising a filter plate (903), a baffle (905) and a fixing bolt (907). A mounting groove (901) is provided in the middle of the lower end of the second valve body (3), the outer walls of the front end and the rear end of the filter plate (903) are both slidably connected to the mounting groove (901), the outer walls on both sides of the second valve body (3) are fixedly connected to fixing blocks (904), the outer walls on both sides of the baffle (905) are both slidably connected to the fixing blocks (904), the middle part of the outer wall of the rear end of the baffle (905) is fixedly connected to a fixing plate (906), the lower end of the fixing plate (906) is threadedly connected to the fixing bolt (907), the upper end of the fixing bolt (907) passes through the fixing plate (906) and is threadedly connected to the second valve body (3), and the upper end of the first valve body (1) is fixedly connected to a pressure plate (10) by bolts.

2. A corrosion-resistant ball valve according to claim 1, characterized in that: The rear end of the first valve body (1) is fixedly connected to a first flange (2), and the front end of the second valve body (3) is fixedly connected to a second flange (4).

3. The corrosion-resistant ball valve according to claim 1, characterized in that: The front end of the outer wall of the first valve body (1) is fixedly connected to a first connecting block (5), and the rear end of the outer wall of the second valve body (3) is fixedly connected to a second connecting block (6), and the second connecting block (6) is fixedly connected to the first connecting block (5) via a plurality of bolts and nuts.

4. The corrosion-resistant ball valve according to claim 1, characterized in that: The rear end of the second valve body (3) is fixedly connected to a sealing ring (8), and the outer wall of the rear end of the sealing ring (8) is tightly fitted with the first valve body (1).

5. The corrosion-resistant ball valve according to claim 1, characterized in that: The inner walls of the front and rear ends of the installation groove (901) are fixedly connected with sealing rings (902), and the sealing rings (902) are tightly fitted with the filter plate (903).

6. The corrosion-resistant ball valve according to claim 1, characterized in that: The upper end of the sphere (7) is fixedly connected to a valve stem (11), and the upper end of the valve stem (11) passes through the first valve body (1) and the pressure plate (10) and is fixedly connected to a handle (12).

7. The corrosion-resistant ball valve according to claim 1, characterized in that: A sealing filler (13) is provided at the opening at the upper end of the first valve body (1), and the inner wall of the sealing filler (13) is tightly fitted to the valve stem (11).

8. The corrosion-resistant ball valve according to claim 1, characterized in that: The rear end of the inner wall of the first valve body (1) is fixedly connected to a first sealing block (14), the front end of the inner wall of the second valve body (3) is fixedly connected to a second sealing block (15), and the outer walls of the front and rear ends of the sphere (7) are tightly fitted to the second sealing block (15) and the first sealing block (14), respectively.

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