Valve for chemical industry

Abstract

The utility model discloses a chemical valve, and relates to the technical field of valves. The valve comprises two valve bodies, a plurality of evenly distributed fixing holes are formed in the sides, close to each other, of the two valve bodies, a rotatable sealing plate is movably installed between the two valve bodies, a valve shaft used for controlling the rotating angle of the sealing plate is fixedly installed on the side wall faces of the two valve bodies, and a handle is arranged in the valve shaft. If a threaded connection mode is adopted, only two sections of pipelines with internal threads need to be in threaded connection with the two mounting sleeves respectively, and if a hoop connection mode is adopted, only the two connecting sleeves need to be in threaded connection with the interiors of the two annular grooves respectively, and meanwhile, the two clamping rings are movably mounted in the two clamping grooves respectively, so that the two sections of pipelines with the internal threads are connected in a threaded mode. Then the two sections of pipelines are inserted into the two connecting pipes and the two connecting sleeves correspondingly, and finally each first fixing ring and the corresponding adjacent second fixing ring are fixed through a hoop.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve for chemical industry. Background Art

[0002] Chemical valve is a device used to control fluids, which is widely used in chemical, petroleum, metallurgy, electric power, pharmaceutical and other industrial fields. Its main function is to adjust the flow, pressure and direction of the fluid to meet the requirements of the process. Chemical valves can be divided into many types according to their structure and function. Common ones include stop valves, ball valves, butterfly valves, gate valves, regulating valves, safety valves, etc. Among them, sanitary butterfly valve is a valve designed for sanitary process fluid control. It is made of high-quality materials, with smooth surface, no dead angle structure and easy cleaning and maintenance.

[0003] The sanitary butterfly valve is mainly composed of a valve body, a valve seat, a butterfly plate, a valve stem and a seal. It has a simple structure, is easy to install, and can quickly control the stop and flow of the fluid. However, the existing sanitary butterfly valve installation structure is relatively simple. When the butterfly valve is installed on the pipeline, it is impossible to have three installation methods of threaded connection, clamp connection and welding connection at the same time, resulting in certain limitations on its scope of application. For this reason, a valve for chemical use is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing sanitary butterfly valve installation structure is relatively simple, and when the butterfly valve is installed on a pipeline, it is impossible to have three installation methods of threaded connection, clamp connection and welding connection at the same time, resulting in a certain limitation on its scope of application. The utility model provides a valve for chemical use.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A chemical valve comprises two valve bodies, a plurality of evenly distributed fixing holes are provided on the sides of the two valve bodies close to each other, a rotatable sealing plate is movably installed in the middle of the two valve bodies, a valve shaft for controlling the rotation angle of the sealing plate is fixedly installed on the side walls of the two valve bodies, a handle is provided inside the valve shaft, a bolt is movably installed inside each of two fixing holes adjacent to each other, a nut is threadedly connected on each bolt, a mounting sleeve is fixedly installed on the sides of the two valve bodies away from each other, an outer wall surface of each mounting sleeve is provided with an external thread, an annular groove is provided on the ends of the two mounting sleeves away from each other, a connecting sleeve is threadedly connected inside each annular groove, a fixing ring is fixedly installed on the ends of the two connecting sleeves away from each other, a clamping groove is provided on the sides of the two fixing rings away from each other, a clamping ring is movably installed inside each clamping groove, a fixing ring is fixedly installed on the sides of the two clamping rings away from each other, and a connecting pipe is fixedly installed on the sides of the two fixing rings away from each other.

[0007] Furthermore, a plurality of evenly distributed threaded holes are provided on the sides of the two fixing rings 1 that are close to each other, and a plurality of evenly distributed threaded grooves are provided on the sides of the two valve bodies that are away from each other, and the interior of each threaded hole is threadedly connected to a bolt 2, and the bottom end of each bolt 2 is threadedly connected to the interior of the corresponding thread groove.

[0008] Furthermore, a sealing groove is provided on the outer wall surface of each installation sleeve, and a sealing ring 1 is fixedly installed inside each sealing groove. A sealing groove 1 is provided on the outer wall surface of each installation sleeve, and a sealing ring 2 is fixedly installed inside each sealing groove 1.

[0009] Furthermore, a sealing ring three is fixedly installed inside each of the card slots, an installation groove two is opened on the inner wall surface of each connecting tube, and a sealing ring four is fixedly installed inside each of the installation grooves two.

[0010] Furthermore, a threaded rod is fixedly installed on the side wall of the valve body below, a circular ring is sleeved on the outside of the threaded rod, a nut 2 is threadedly connected to the threaded rod, a connecting frame is fixedly installed on the side wall of the circular ring, a fixing ring assembly is provided at one end of the connecting frame away from the circular ring, and the fixing ring assembly is sleeved on the outside of the handle.

[0011] Furthermore, the fixing ring assembly includes two arc-shaped rods, and one end of the connecting frame away from the circular ring is fixedly connected to the adjacent arc-shaped rod, and the handle is located between the two arc-shaped rods. Fixed blocks are fixedly installed at both ends of each arc-shaped rod, and a circular hole is opened on the side where each two adjacent fixed blocks are close to each other, and three bolts are movably installed inside each two adjacent circular holes, and three nuts are threadedly connected to each bolt.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. If the utility model adopts welding connection, it is only necessary to rotate the two fixing rings 1 respectively, and each fixing ring 1 drives the connecting sleeve connected to it to rotate, so that the two connecting sleeves can be rotated and disengaged from the inside of the two annular grooves respectively, and then the two sections of pipes can be respectively inserted into the inside of the two installation sleeves and fixed with welding technology. If the threaded connection is adopted, at this time, it is only necessary to thread the two sections of pipes with internal threads to the two installation sleeves respectively. If the clamp connection is adopted, it is only necessary to thread the two connecting sleeves to the inside of the two annular grooves respectively, and at the same time make the two clamping rings movably installed to the inside of the two clamping grooves respectively, and then the two sections of pipes are respectively inserted into the inside of the two connecting pipes and the two connecting sleeves, and finally each fixing ring 1 and the adjacent fixing ring 2 are fixed with a clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This utility model Figure 1 The enlarged view of point A in the middle;

[0016] Figure 3 It is a partial structural sectional view of the utility model;

[0017] 1. Valve body; 2. Fixing hole; 3. Sealing plate; 4. Valve shaft; 5. Handle; 6. Bolt 1; 7. Nut 1; 8. Mounting sleeve; 9. Annular groove; 10. Connecting sleeve; 11. Fixing ring 1; 12. Clamping groove; 13. Fixing ring 2; 14. Clamping ring; 15. Connecting tube; 16. Threaded hole; 17. Threaded groove; 18. Bolt 2; 19. Sealing groove; 20. Sealing ring 1; 21. Mounting groove 1; 22. Sealing ring 2; 23. Sealing ring 3; 24. Mounting groove 2; 25. Sealing ring 4; 26. Threaded rod; 27. Round ring; 28. Nut 2; 29. ​​Connecting frame; 30. Fixing ring assembly; 3001. Arc rod; 3002. Fixing block; 3003. Round hole; 3004. Bolt 3; 3005. Nut 3. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figures 1 to 3As shown, a chemical valve comprises two valve bodies 1, a plurality of evenly distributed fixing holes 2 are provided on the sides of the two valve bodies 1 close to each other, a rotatable sealing plate 3 is movably installed between the two valve bodies 1, a valve shaft 4 for controlling the rotation angle of the sealing plate 3 is fixedly installed on the side wall of the two valve bodies 1, a handle 5 is provided inside the valve shaft 4, a bolt 6 is movably installed inside each of the two fixing holes 2 adjacent to each other, a nut 7 is threadedly connected on each bolt 6, a mounting sleeve 8 is fixedly installed on the sides of the two valve bodies 1 away from each other, an outer wall surface of each mounting sleeve 8 is provided with an external thread, an annular groove 9 is provided on the ends of the two mounting sleeves 8 away from each other, a connecting sleeve 10 is threadedly connected inside each annular groove 9, a fixing ring 11 is fixedly installed on the ends of the two connecting sleeves 10 away from each other, a clamping groove 12 is provided on the sides of the two fixing rings 11 away from each other, a clamping ring 14 is movably installed inside each clamping groove 12, and the two clamping rings 14 are away from each other. A fixing ring 13 is fixedly installed on one side, and a connecting pipe 15 is fixedly installed on the side where the two fixing rings 13 are away from each other. It should be noted that if welding is used for connection, it is only necessary to rotate the two fixing rings 11 respectively, and each fixing ring 11 drives the connecting sleeve 10 connected to it to rotate, so that the two connecting sleeves 10 can be rotated and detached from the two annular grooves 9 respectively, and then the two sections of the pipe are respectively inserted into the two installation sleeves 8 and fixed with welding technology. If threaded connection is adopted, at this time, it is only necessary to thread the two sections of the pipe with internal threads to the two installation sleeves 8 respectively. If clamp connection is adopted, it is only necessary to thread the two connecting sleeves 10 respectively to the inside of the two annular grooves 9, and at the same time, the two clamping rings 14 are respectively movably installed in the inside of the two clamping grooves 12, and then the two sections of the pipe are respectively inserted into the inside of the two connecting pipes 15 and the two connecting sleeves 10, and finally each fixing ring 11 and the adjacent fixing ring 2 13 are fixed with a clamp.

[0023] like Figure 1 , Figure 3 As shown, a plurality of evenly distributed threaded holes 16 are provided on the sides of the two fixing rings 11 that are close to each other, and a plurality of evenly distributed threaded grooves 17 are provided on the sides of the two valve bodies 1 that are away from each other. A bolt 18 is threadedly connected to the interior of each threaded hole 16, and the bottom end of each bolt 18 is threadedly connected to the interior of the corresponding threaded groove 17. It should be noted that if a clamp is used for connection, after the two connecting sleeves 10 are threadedly connected to the interior of the two annular grooves 9, each bolt 18 is rotated respectively, so that the bottom end of each bolt 18 is threadedly connected to the interior of the corresponding threaded groove 17, which can prevent the connecting sleeve 10 from rotating loose.

[0024] like Figure 1 , Figure 3As shown, a sealing groove 19 is provided on the outer wall surface of each mounting sleeve 8, and a sealing ring 20 is fixedly installed inside each sealing groove 19. A mounting groove 21 is provided on the outer wall surface of each mounting sleeve 8, and a sealing ring 22 is fixedly installed inside each mounting groove 21. It should be noted that if a threaded connection is adopted, when two sections of pipes with internal threads are respectively threadedly connected to the two mounting sleeves 8, the ends of the two sections of pipes close to each other are respectively located inside adjacent sealing grooves 19. At this time, the sealing ring 20 and the sealing ring 22 can jointly increase the sealing effect to prevent leakage at the connection between the pipe and the mounting sleeve 8.

[0025] like Figure 1 , Figure 3 As shown, a sealing ring three 23 is fixedly installed inside each slot 12, and a mounting groove two 24 is opened on the inner wall surface of each connecting pipe 15, and a sealing ring four 25 is fixedly installed inside each mounting groove two 24. It should be noted that if a clamp is used for connection, when the two clamping rings 14 are movably installed in the inside of the two slots 12 respectively, the sealing ring three 23 and the sealing ring four 25 can jointly increase the sealing effect to prevent leakage at the connection between the pipeline and the connecting pipe 15 and the connecting sleeve 10.

[0026] like Figure 1 , Figure 2 As shown, a threaded rod 26 is fixedly installed on the side wall of the lower valve body 1, a circular ring 27 is sleeved on the outside of the threaded rod 26, a nut 28 is threadedly connected to the threaded rod 26, a connecting frame 29 is fixedly installed on the side wall of the circular ring 27, and a fixing ring assembly 30 is provided at the end of the connecting frame 29 away from the circular ring 27, and the fixing ring assembly 30 is sleeved on the outside of the handle 5. It should be noted that when the nut 28 is rotated to fix the circular ring 27 on the threaded rod 26, the connecting frame 29 and the fixing ring assembly 30 will also be unable to rotate, and the handle 5 is located inside the fixing ring assembly 30 and cannot rotate either. The main purpose is to avoid accidental contact with the handle 5.

[0027] like Figure 1 , Figure 2As shown, the fixing ring assembly 30 includes two arc-shaped rods 3001, and one end of the connecting frame 29 away from the circular ring 27 is fixedly connected to the adjacent arc-shaped rod 3001, and the handle 5 is located in the middle of the two arc-shaped rods 3001, and both ends of each arc-shaped rod 3001 are fixedly installed with fixing blocks 3002, and a circular hole 3003 is opened on the side where each two adjacent fixing blocks 3002 are close to each other, and a bolt three 3004 is movably installed inside each two adjacent circular holes 3003, and a nut three 3005 is threadedly connected to each bolt three 3004. It should be noted that by rotating the two nuts three 3005 respectively, each nut three 3005 is rotated and disengaged from the corresponding bolt three 3004, and then the two bolts three 3004 are respectively taken out from the corresponding two circular holes 3003, the two arc-shaped rods 3001 can be separated, and when there is no need to prevent the handle 5 from accidental contact, the fixing ring assembly 30 can be selected to be disassembled.

[0028] In summary:

[0029] If welding is used for connection, it is only necessary to rotate the two fixing rings 11 respectively, and each fixing ring 11 drives the connecting sleeve 10 connected to it to rotate, so that the two connecting sleeves 10 can be rotated and disengaged from the two annular grooves 9 respectively, and then the two sections of pipes can be inserted into the two installation sleeves 8 respectively and fixed with welding technology. If threaded connection is adopted, at this time, it is only necessary to thread the two sections of pipes with internal threads to the two installation sleeves 8 respectively. If clamp connection is adopted, it is only necessary to thread the two connecting sleeves 10 respectively to the inside of the two annular grooves 9, and at the same time, the two clamping rings 14 can be movably installed in the inside of the two clamping grooves 12 respectively, and then the two sections of pipes are respectively inserted into the inside of the two connecting pipes 15 and the two connecting sleeves 10, and finally each fixing ring 11 and the adjacent fixing ring 2 13 are fixed with a clamp.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A chemical valve, comprising two valve bodies (1), a plurality of evenly distributed fixing holes (2) are provided on the mutually adjacent sides of the two valve bodies (1), a rotatable sealing plate (3) is movably installed between the two valve bodies (1), a valve shaft (4) for controlling the rotation angle of the sealing plate (3) is fixedly installed on the side wall surfaces of the two valve bodies (1), a handle (5) is provided inside the valve shaft (4), a bolt (6) is movably installed inside each of the upper and lower adjacent fixing holes (2), a nut (7) is threadedly connected to each bolt (6), and the characteristics are as follows: A mounting sleeve (8) is fixedly mounted on the side of the two valve bodies (1) away from each other, the outer wall surface of each mounting sleeve (8) is provided with an external thread, an annular groove (9) is provided at the end of the two mounting sleeves (8) away from each other, a connecting sleeve (10) is threadedly connected inside each annular groove (9), a fixing ring (11) is fixedly mounted on the end of the two connecting sleeves (10) away from each other, a clamping groove (12) is provided on the side of the two fixing rings (11) away from each other, a clamping ring (14) is movably mounted inside each clamping groove (12), a fixing ring (13) is fixedly mounted on the side of the two clamping rings (14) away from each other, and a connecting pipe (15) is fixedly mounted on the side of the two fixing rings (13) away from each other.

2. A chemical valve according to claim 1, characterized in that: A plurality of evenly distributed threaded holes (16) are provided on the sides of the two fixing rings (11) that are close to each other, and a plurality of evenly distributed threaded grooves (17) are provided on the sides of the two valve bodies (1) that are away from each other. The interior of each threaded hole (16) is threadedly connected to a bolt (18), and the bottom end of each bolt (18) is threadedly connected to the interior of the corresponding threaded groove (17).

3. A chemical valve according to claim 1, characterized in that: The outer wall surface of each installation sleeve (8) is provided with a sealing groove (19), and a sealing ring (20) is fixedly installed inside each sealing groove (19). The outer wall surface of each installation sleeve (8) is provided with an installation groove (21), and a sealing ring (22) is fixedly installed inside each installation groove (21).

4. A chemical valve according to claim 1, characterized in that: A sealing ring three (23) is fixedly installed inside each of the clamping grooves (12), a mounting groove two (24) is opened on the inner wall surface of each connecting tube (15), and a sealing ring four (25) is fixedly installed inside each of the mounting grooves two (24).

5. A chemical valve according to claim 1, characterized in that: A threaded rod (26) is fixedly mounted on the side wall of the valve body (1) at the bottom, a circular ring (27) is sleeved on the outside of the threaded rod (26), a nut (28) is threadedly connected to the threaded rod (26), a connecting frame (29) is fixedly mounted on the side wall of the circular ring (27), a fixing ring assembly (30) is arranged at one end of the connecting frame (29) away from the circular ring (27), and the fixing ring assembly (30) is sleeved on the outside of the handle (5).

6. A chemical valve according to claim 5, characterized in that: The fixing ring assembly (30) comprises two arc-shaped rods (3001), one end of the connecting frame (29) away from the circular ring (27) is fixedly connected to the adjacent arc-shaped rod (3001), the handle (5) is located between the two arc-shaped rods (3001), both ends of each arc-shaped rod (3001) are fixedly installed with fixing blocks (3002), a circular hole (3003) is opened on the side close to each other of each two adjacent fixing blocks (3002), a bolt three (3004) is movably installed inside each two adjacent circular holes (3003), and each bolt three (3004) is threadedly connected with a nut three (3005).

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