Butterfly valve body structure

Abstract

The utility model discloses a butterfly valve body structure, which relates to the technical field of butterfly valve bodies and comprises a valve body pipe, a valve plate is arranged in the valve body pipe, a valve box is fixedly mounted at the top of the valve body pipe, a first sliding groove is formed in the valve box, a first threaded rod is rotatably mounted in the first sliding groove, and a second threaded rod is mounted in the first threaded rod. A first sliding groove is formed in the valve box, a second sliding groove is formed in the position, located above the first sliding groove, of the interior of the valve box, and a second threaded rod is rotationally installed in the second sliding groove, and the beneficial effects are that in the using process, after the valve rod is rotated through the valve wheel, the worm and the worm gear can be meshed to drive the first threaded rod and the second threaded rod to rotate; after the first threaded rod rotates, the valve plate can incline to enable fluid to circulate, meanwhile, after the second threaded rod rotates, the first sliding block can be driven to move through the threads, then the inclination angle and the flow of the valve plate can be known by observing the marker post and the scale marks, and the flow can be observed and adjusted conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valve bodies, in particular to a butterfly valve body structure. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays a role of cutting off and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0003] At present, the existing butterfly valve can only adjust the fluid flow of the valve body by rotating the valve plate through the valve stem. However, when adjusting, it can only rely on observing the water output to adjust the fluid flow, and cannot adjust the quantitative flow size according to demand. For this reason, we propose a butterfly valve body structure. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a butterfly valve body structure, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a butterfly valve body structure, including a valve body tube, a valve plate is arranged inside the valve body tube, a valve box is fixedly installed on the top of the valve body tube, a first slide groove is opened inside the valve box, a first threaded rod is rotatably installed inside the first slide groove, a second slide groove is opened inside the valve box and located above the first slide groove, a second threaded rod is rotatably installed inside the second slide groove, a worm gear is fixedly installed on the outsides of the first threaded rod and the second threaded rod, a valve stem is rotatably installed inside the valve box, two worms are fixedly installed on the outside of the valve stem, the worms are meshed with the worm gear, one end of the valve stem extends to the outside of the top of the valve box and a valve wheel is fixedly installed, a first slider is threadedly installed on the outside of the second threaded rod, a mark groove is opened inside the valve box and located above the second slide groove, a mark rod is fixedly installed on the top of the first slider, the mark rod is slidably connected to the mark groove, a scale mark is arranged on the top of the valve box and on one side of the mark groove, and the mark rod cooperates with the scale mark.

[0006] Preferably, a second slider is installed on the outer thread of the first threaded rod, a guide groove is opened inside the top of the valve body tube, a mounting rod is fixedly installed on the bottom of the second slider, the mounting rod is slidably connected to the guide groove, a connecting rod is fixedly installed on one end of the mounting rod, a sliding rod is fixedly installed on one side of the valve plate, a third slider is slidably installed on the outer side of the sliding rod, and one end of the connecting rod is movably connected to the third slider.

[0007] Preferably, a sealing limit plate is fixedly installed inside the first slide groove and in the middle of the first threaded rod, and the first threaded rod is rotatably connected to the sealing limit plate.

[0008] Preferably, flanges are fixedly mounted on both ends of the valve body tube.

[0009] Preferably, valve shafts are fixedly mounted on both sides of the valve plate, and the valve shafts are rotatably connected to the inner wall of the valve body tube.

[0010] Preferably, a hole cooperating with the valve stem is provided inside the valve box.

[0011] The utility model provides a butterfly valve body structure, which has the following beneficial effects:

[0012] 1. The butterfly valve body structure is matched with the valve box, the second slide groove, the second threaded rod, the worm gear, the valve stem, the worm, the valve wheel, the sealing limit plate, the first slider, the mark groove, the mark rod and the scale mark. During use, after the valve stem is rotated by the valve wheel, the first threaded rod and the second threaded rod can be driven to rotate through the engagement of the worm and the worm gear. After the first threaded rod is rotated, the valve plate can be tilted to allow the fluid to flow. At the same time, after the second threaded rod is rotated, it will drive the first slider to move through the thread. Then, by observing the mark rod and the scale mark, the inclination angle of the valve plate and the flow rate can be known, which is convenient for observing and adjusting the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 For this utility model Figure 2 A in the enlarged view;

[0017] Figure 5 For this utility model Figure 2 The enlarged view of point B in the figure;

[0018] Figure 6 For this utility model Figure 2Enlarged view of point C in .

[0019] In the figure: 1. valve body tube; 2. valve plate; 3. valve box; 4. first slide groove; 5. first threaded rod; 6. second slide groove; 7. second threaded rod; 8. worm gear; 9. valve stem; 10. worm; 11. valve wheel; 12. sealing limit plate; 13. first slider; 14. mark groove; 15. mark rod; 16. scale mark; 17. second slider; 18. guide groove; 19. mounting rod; 20. connecting rod; 21. slide rod; 22. third slider; 23. flange. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figures 1 to 6 The utility model provides a technical solution: a butterfly valve body structure, including a valve body tube 1, a valve plate 2 is arranged inside the valve body tube 1, a valve box 3 is fixedly installed on the top of the valve body tube 1, a first slide groove 4 is opened inside the valve box 3, a first threaded rod 5 is rotatably installed inside the first slide groove 4, a second slide groove 6 is opened inside the valve box 3 and above the first slide groove 4, a second threaded rod 7 is rotatably installed inside the second slide groove 6, a worm gear 8 is fixedly installed on the outside of the first threaded rod 5 and the second threaded rod 7, a valve stem 9 is rotatably installed inside the valve box 3, and the inside of the valve box 3 A hole is provided on the part to cooperate with the valve stem 9, two worms 10 are fixedly installed on the outer side of the valve stem 9, and the worms 10 are meshed with the worm wheel 8. One end of the valve stem 9 extends to the outer side of the top of the valve box 3 and a valve wheel 11 is fixedly installed, and the outer side of the second threaded rod 7 is threadedly installed with a first slider 13. A marking groove 14 is provided inside the valve box 3 and above the second slide groove 6. A marking rod 15 is fixedly installed on the top of the first slider 13, and the marking rod 15 is slidably connected with the marking groove 14. A scale mark 16 is provided on the top of the valve box 3 and on one side of the marking groove 14, and the marking rod 15 cooperates with the scale mark 16.

[0022] A second slider 17 is threadedly installed on the outer side of the first threaded rod 5, and a guide groove 18 is opened inside the top of the valve body tube 1, and a mounting rod 19 is fixedly installed on the bottom of the second slider 17, and the mounting rod 19 is slidably connected to the guide groove 18, and a connecting rod 20 is fixedly installed on one end of the mounting rod 19, and a sliding rod 21 is fixedly installed on one side of the valve plate 2, and a third slider 22 is slidably installed on the outer side of the sliding rod 21, and one end of the connecting rod 20 is movably connected to the third slider 22. The functions of the second slider 17, the guide groove 18, the mounting rod 19, the connecting rod 20, the sliding rod 21 and the third slider 22 are that when the valve stem 9 rotates, the worm 10 engages with the worm gear 8 and drives the first threaded rod 5 to rotate, which can drive the second slider 17 to move through the thread. When the second slider 17 moves, the mounting rod 19 and the connecting rod 20 are displaced, which can push the third slider 22 to slide on the outside of the sliding rod 21, and at the same time push the valve plate 2 to tilt and open, so that the fluid can flow through the gap after the valve plate 2 is opened.

[0023] Flanges 23 are fixedly installed at both ends of the valve body tube 1, valve shafts are fixedly installed on both sides of the valve plate 2, the valve shafts are rotatably connected to the inner wall of the valve body tube 1, a sealing limit plate 12 is fixedly installed inside the first slide groove 4 and in the middle of the first threaded rod 5, the first threaded rod 5 is rotatably connected to the sealing limit plate 12, wherein the valve shafts on both sides of the valve plate 2 are horizontally arranged, and when the valve plate 2 rotates, it rotates around the valve shaft as the axis.

[0024] In summary, the butterfly valve body structure, when in use, can drive the first threaded rod 5 and the second threaded rod 7 to rotate by rotating the valve stem 9 through the valve wheel 11, and then the worm 10 can be engaged with the worm wheel 8 to drive the first threaded rod 5 and the second threaded rod 7 to rotate. After the first threaded rod 5 is rotated, it can drive the second slider 17 to move through the thread. When the second slider 17 moves and the mounting rod 19 and the connecting rod 20 are displaced, the third slider 22 can be pushed to slide on the outside of the slide rod 21, and the valve plate 2 can be pushed to tilt and open, so that the fluid can flow through the gap after the valve plate 2 is opened. At the same time, after the second threaded rod 7 is rotated, it will drive the first slider 13 to move through the thread, and then by observing the mark rod 15 and the scale mark 16, the inclination angle of the valve plate 2 and the flow rate can be known, which is convenient for observing and adjusting the flow rate.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A butterfly valve body structure, comprising a valve body tube (1), characterized in that: A valve plate (2) is arranged inside the valve body tube (1), a valve box (3) is fixedly installed on the top of the valve body tube (1), a first slide groove (4) is provided inside the valve box (3), a first threaded rod (5) is rotatably installed inside the first slide groove (4), a second slide groove (6) is provided inside the valve box (3) and located above the first slide groove (4), a second threaded rod (7) is rotatably installed inside the second slide groove (6), worm gears (8) are fixedly installed on the outer sides of the first threaded rod (5) and the second threaded rod (7), a valve stem (9) is rotatably installed inside the valve box (3), and a valve rod (9) is fixedly installed on the outer side of the valve stem (9). Two worms (10), the worms (10) meshing with the worm wheel (8), one end of the valve stem (9) extending to the outside of the top of the valve box (3) and fixedly mounted with a valve wheel (11), the outside of the second threaded rod (7) being threadedly mounted with a first slider (13), the inside of the valve box (3) and located above the second slide groove (6) is provided with a marking groove (14), the top of the first slider (13) is fixedly mounted with a marking rod (15), the marking rod (15) is slidably connected with the marking groove (14), the top of the valve box (3) and located on one side of the marking groove (14) is provided with a scale mark (16), the marking rod (15) cooperates with the scale mark (16).

2. A butterfly valve body structure according to claim 1, characterized in that: A second slider (17) is threadedly mounted on the outer side of the first threaded rod (5); a guide groove (18) is provided inside the top of the valve body tube (1); a mounting rod (19) is fixedly mounted on the bottom of the second slider (17); the mounting rod (19) is slidably connected to the guide groove (18); a connecting rod (20) is fixedly mounted on one end of the mounting rod (19); a sliding rod (21) is fixedly mounted on one side of the valve plate (2); a third slider (22) is slidably mounted on the outer side of the sliding rod (21); and one end of the connecting rod (20) is movably connected to the third slider (22).

3. A butterfly valve body structure according to claim 1, characterized in that: A sealing limit plate (12) is fixedly installed inside the first sliding groove (4) and in the middle of the first threaded rod (5), and the first threaded rod (5) is rotatably connected to the sealing limit plate (12).

4. A butterfly valve body structure according to claim 1, characterized in that: Flanges (23) are fixedly mounted on both ends of the valve body tube (1).

5. A butterfly valve body structure according to claim 1, characterized in that: Valve shafts are fixedly mounted on both sides of the valve plate (2), and the valve shafts are rotatably connected to the inner wall of the valve body tube (1).

6. A butterfly valve body structure according to claim 1, characterized in that: The valve box (3) is provided with a hole inside thereof to match the valve stem (9).

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