A butterfly valve for facilitating the connection of pipelines

Abstract

The present invention discloses a butterfly valve convenient for connecting pipelines, and its technical solution is as follows: It includes a valve body, connection flanges are arranged at both ends of the valve body, a butterfly plate is arranged inside the valve body, a valve stem is fixed on the butterfly plate, the valve stem is movably connected to the valve body, two clamps corresponding to the positions of the connection flanges are arranged at the top of the valve body, the clamp includes an upper clamp sleeve and a lower clamp sleeve, one end of the upper clamp sleeve is movably connected to the end of the lower clamp sleeve, and the other end of the upper clamp sleeve is fixed to the end of the lower clamp sleeve through a fastening bolt. The beneficial effect of a butterfly valve convenient for connecting pipelines is that by arranging two clamps on the valve body, during use, first place the two clamps on the flanges on the pipelines to achieve positioning, and then rotate the driving rod to lift the valve body by winding the pulling rope, and finally move the connection flange into the clamp and align it with the flange on the pipeline, which facilitates the installation work of the butterfly valve and the pipeline, is labor-saving and safe in operation, and only one person is required to complete the operation.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and particularly relates to a butterfly valve that is convenient for connecting pipelines. Background Art

[0002] A butterfly valve, also called a flap valve, is a simple-structured regulating valve. A butterfly valve used for switching control of media in low-pressure pipelines refers to a valve in which the closing member (valve flap or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing. Generally, a flange is provided on the butterfly valve, and the flange is connected to the flange on the pipeline through bolts to realize the installation of the butterfly valve.

[0003] Some existing larger butterfly valves are relatively heavy and need to be lifted by a crane during installation. However, in many installation scenarios, there is no crane for lifting, and multiple people need to lift them and then position them, which is not convenient and has a large potential safety hazard. Summary of the Invention

[0004] Therefore, the present invention provides a butterfly valve that is convenient for connecting pipelines. By providing two clamps on the valve body, during use, first, the two clamps are sleeved on the flange on the pipeline to achieve positioning, and then the valve body can be lifted by rotating the driving rod in a way of winding the pulling rope. Finally, the connecting flange is moved into the clamp and aligned with the flange on the pipeline, so as to solve the problem that some existing larger butterfly valves are relatively heavy and need to be lifted by a crane during installation. However, in many installation scenarios, there is no crane for lifting, and multiple people need to lift them and then position them, which is not convenient and has a large potential safety hazard.

[0005] To achieve the above object, the present invention provides the following technical solution: A butterfly valve that is convenient for connecting pipelines, including a valve body, connecting flanges are provided at both ends of the valve body, a butterfly plate is provided inside the valve body, a valve rod is fixed on the butterfly plate, the valve rod is movably connected to the valve body, two clamps corresponding to the positions of the connecting flanges are provided at the top of the valve body, each clamp includes an upper clamp sleeve and a lower clamp sleeve, one end of the upper clamp sleeve is movably connected to the end of the lower clamp sleeve, the other end of the upper clamp sleeve is fixed to the end of the lower clamp sleeve through a fastening bolt, a connecting rod is fixedly connected between the upper clamp sleeves of the two clamps, a driving box is fixedly connected to the top of the upper clamp sleeve, a rotating shaft is provided inside the driving box, the rotating shaft is movably connected to the inner wall of the driving box, a wire reel and a worm gear are fixedly connected to the rotating shaft, a pulling rope is fixedly connected to the wire reel, the pulling rope penetrates outside the driving box and is fixedly connected to the top of the valve body, a worm is further provided inside the driving box, the worm is meshed with the worm gear, the worm is movably connected to the inner wall of the driving box, one end of the worm extends outside the driving box, the worms on the two driving boxes are connected through a transmission member, and a driving rod is installed at the end of the worm on one of the driving boxes.

[0006] Preferably, the top of the valve body is fixedly connected with a mounting cover plate through screws. The mounting cover plate is annular and sleeved outside the valve stem, and uniformly distributed limiting tooth blocks are arranged on more than one-fourth of the edge of the mounting cover plate.

[0007] Preferably, an adjusting handle is hinged to the top end of the valve body. The adjusting handle is vertical, and an inclined clamping rod is fixedly connected to the bottom end of the adjusting handle. The end of the inclined clamping rod is engaged with the limiting tooth block, and a tension spring is connected between the inclined clamping rod and the mounting cover plate.

[0008] Preferably, two limiting blocks are further fixedly connected to the top of the mounting cover plate.

[0009] Preferably, the transmission member includes a sprocket and a chain. Two sprockets are provided and are respectively fixed to the ends of two worm shafts, and the two sprockets are connected by a chain.

[0010] Preferably, an opening is formed at the end of the worm shaft, and the driving rod is movably inserted into the opening. Limiting spheres are fixedly connected to both ends of the driving rod.

[0011] Preferably, a maintenance cover is arranged on the top of the driving box, and the maintenance cover is fixedly connected to the driving box through screws.

[0012] Preferably, a rubber pad is fixedly connected to the inner wall of the clamp.

[0013] Preferably, a positioning earring is fixedly connected to the inner edge of the upper hoop sleeve away from the valve body.

[0014] The embodiments of the present invention have the following advantages:

[0015] 1. By arranging two clamps on the valve body, during use, first sleeve the two clamps on the flange on the pipeline to achieve positioning, and then rotate the driving rod to lift the valve body by winding the pulling rope, and finally move the connecting flange into the clamp and align it with the flange on the pipeline, which facilitates the installation work of the butterfly valve and the pipeline, is labor-saving and safe in operation, and only one person is required to complete the operation;

[0016] 2. The clamp can be sleeved at the connection between the valve body and the pipeline to improve the connection strength. By arranging a vertical adjusting handle, the vertical movement of the valve body is not affected. By arranging a transmission member, the two worm shafts can rotate synchronously, ensuring that the moving speeds at both ends of the valve body are the same, which is more practical. Description of the Drawings

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained based on the provided drawings.

[0018] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed by the present invention.

[0019] Figure 1 Schematic diagram of the overall structure provided by the present invention;

[0020] Figure 2 Schematic diagram of the working provided by the present invention;

[0021] Figure 3 Schematic diagram of the internal structure of the drive box provided by the present invention;

[0022] Figure 4 Provided by the present invention Figure 1 Enlarged view of the structure of part A;

[0023] Figure 5 Provided by the present invention Figure 2 Enlarged view of the structure of part B.

[0024] In the figure: 1 valve body, 2 connecting flange, 3 butterfly plate, 4 valve stem, 5 clamp, 51 upper hoop, 52 lower hoop, 6 fastening bolt, 7 connecting rod, 8 drive box, 9 rotating shaft, 10 wire reel, 11 worm gear, 12 pulling rope, 13 worm, 14 transmission member, 141 sprocket, 142 chain, 15 drive rod, 16 mounting cover plate, 17 limiting tooth block, 18 adjusting handle, 19 inclined clamping rod, 20 tension spring, 21 limiting block, 22 opening, 23 limiting sphere, 24 inspection cover, 25 positioning earring. Specific embodiments

[0025] The following specific embodiments illustrate the embodiments of the present invention. Those familiar with this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] Referring to the attached Figures 1-5 , a butterfly valve provided by the present invention for conveniently connecting pipelines includes a valve body 1. Connecting flanges 2 are arranged at both ends of the valve body 1. A butterfly plate 3 is arranged inside the valve body 1. A valve stem 4 is fixed on the butterfly plate 3. The valve stem 4 is movably connected to the valve body 1. Two clamps 5 corresponding to the positions of the connecting flanges 2 are arranged at the top of the valve body 1. The clamp 5 includes an upper sleeve 51 and a lower sleeve 52. One end of the upper sleeve 51 is movably connected to the end of the lower sleeve 52. The other end of the upper sleeve 51 is fixed to the end of the lower sleeve 52 through a fastening bolt 6. A connecting rod 7 is fixedly connected between the upper sleeves 51 of the two clamps 5. A driving box 8 is fixedly connected to the top of the upper sleeve 51. A rotating shaft 9 is arranged inside the driving box 8. The rotating shaft 9 is movably connected to the inner wall of the driving box 8. A wire reel 10 and a worm gear 11 are fixedly connected to the rotating shaft 9. A pulling rope 12 is fixedly connected to the wire reel 10. The pulling rope 12 penetrates outside the driving box 8 and is fixedly connected to the top of the valve body 1. A worm 13 is also arranged inside the driving box 8. The worm 13 meshes with the worm gear 11. The worm 13 is movably connected to the inner wall of the driving box 8. One end of the worm 13 extends outside the driving box 8. The worms 13 on the two driving boxes 8 are connected through a transmission member 14. A driving rod 15 is installed at the end of the worm 13 on one of the driving boxes 8;

[0027] In this embodiment, the clamp 5 is preferably made of a light metal material, and the pulling rope 12 is set as a metal rope. By arranging two clamps 5 on the valve body 1, during use, first place the two clamps 5 on the flanges on the pipeline for positioning, and then rotate the driving rod 15 to lift the valve body 1 by winding the pulling rope 12. Finally, move the connecting flange 2 into the clamp 5 and align it with the flange on the pipeline, which facilitates the installation work of the butterfly valve and the pipeline. The operation is labor-saving and safe, and only one person is required to complete the operation.

[0028] Among them, in order to achieve the purpose of adjusting the valve, the present device is implemented by the following technical solutions: The top of the valve body 1 is fixedly connected with a mounting cover plate 16 through screws. The mounting cover plate 16 is arranged in a ring shape and sleeved outside the valve stem 4. Uniformly distributed limit tooth blocks 17 are arranged on more than one-fourth of the edge of the mounting cover plate 16. The top end of the valve body 1 is hinged with an adjusting handle 18. The adjusting handle 18 is in a vertical shape. A slant clamping rod 19 is fixedly connected to the bottom end of the adjusting handle 18. The end of the slant clamping rod 19 is engaged with the limit tooth blocks 17. A tension spring 20 is connected between the slant clamping rod 19 and the mounting cover plate 16. Two limit blocks 21 are also fixedly connected to the top of the mounting cover plate 16. Setting the adjusting handle 18 in a vertical shape will not affect the vertical movement of the valve body 1. When the valve needs to be adjusted, hold the adjusting handle 18 and rotate it to disengage the slant clamping rod 19 from the limit tooth blocks 17, and at the same time stretch the tension spring 20. Then rotate the adjusting handle 18 to drive the valve stem 4 and the butterfly plate 3 to rotate, so as to achieve the adjustment. The limit blocks 21 can position the moving position of the slant clamping rod 19 to make the butterfly plate 3 in a fully closed or fully open state;

[0029] Among them, in order to achieve the purpose of making the moving speeds at both ends of the valve body 1 the same, the present device adopts the following technical solution: The transmission member 14 includes a sprocket 141 and a chain 142. Two sprockets 141 are provided and are respectively fixed to the ends of the two worms 13. The two sprockets 141 are connected by a chain 142. By using the transmission member 14, when one worm 13 rotates, the other worm 13 can be driven to rotate synchronously, and then the synchronous winding of the pulling rope 12 can be realized, ensuring that the lifting speeds at both ends of the valve body 1 are the same;

[0030] Among them, in order to achieve the purpose of labor-saving operation, the present device adopts the following technical solution: An opening 22 is provided at the end of the worm 13, and the driving rod 15 is movably inserted into the opening 22. Limit spheres 23 are fixedly connected to both ends of the driving rod 15. The driving rod 15 can be more labor-saving by using the lever principle;

[0031] Among them, in order to achieve the purpose of overhauling and maintaining the parts in the driving box 8, the present device adopts the following technical solution: A maintenance cover 24 is provided on the top of the driving box 8, and the maintenance cover 24 is fixedly connected to the driving box 8 by screws;

[0032] Among them, in order to achieve the purpose of preventing the clamp 5 from damaging the flange edge, the present device adopts the following technical solution: A rubber pad is fixedly connected to the inner wall of the clamp 5;

[0033] Among them, in order to achieve the purpose of positioning the upper hoop 51, the present device adopts the following technical solution: A positioning earring 25 is fixedly connected to the inner edge of the side of the upper hoop 51 away from the valve body 1. In actual application, the position of the positioning earring 25 corresponds to the position of the mounting hole on the pipeline flange. When the upper hoop 51 is sleeved on the pipeline flange, the bolts can be sequentially passed through the positioning earring 25 and the mounting hole on the pipeline flange, thereby avoiding the position deviation of the upper hoop 51.

[0034] The use process of the present invention is as follows: When using the present invention, first move the valve to between the two pipelines, then rotate the fastening bolt 6 to separate the upper hoop 51 and the lower hoop 52. Then, respectively sleeve the two upper hoops 51 on the flanges at the ends of the two pipelines. Then, repeatedly rotate the driving rod 15. The driving rod 15 can drive the worm 13 to rotate. The worm 13 can drive the other worm 13 to rotate synchronously through the transmission member 14. When the two worms 13 rotate, they can drive the two worm wheels 11 to rotate synchronously, and then drive the two rotating shafts 9 and the wire winding wheels 10 to rotate synchronously. The rotation of the wire winding wheel 10 can wind the pulling rope 12, thereby pulling the valve body 1 on the ground and gradually lifting the valve body 1 until the connecting flanges 2 at both ends of the valve body 1 move into the upper hoop 51. At this time, the connecting flange 2 just aligns with the flange at the end of the pipeline. Then, connect and fix the connecting flange 2 and the flange at the end of the pipeline. Finally, rotate the lower hoop 52 and fix it with the upper hoop 51 through the fastening bolt 6, so that the clamp 5 tightly wraps the connection between the valve body 1 and the pipeline.

[0035] The above are only the preferred embodiments of the present invention. Any person skilled in the art may modify the present invention by using the technical solutions described above or modify it into equivalent technical solutions. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention falls within the scope of protection required by the present invention.

Claims

1. A butterfly valve for convenient pipe connection, comprising a valve body (1), connection flanges (2) are provided at both ends of the valve body (1), a butterfly plate (3) is arranged inside the valve body (1), a valve stem (4) is fixed on the butterfly plate (3), and the valve stem (4) is movably connected to the valve body (1), characterized in that: At the top of the valve body (1), there are two clamps (5) corresponding to the positions of the connecting flanges (2). The clamp (5) includes an upper clamp sleeve (51) and a lower clamp sleeve (52). One end of the upper clamp sleeve (51) is movably connected to the end of the lower clamp sleeve (52), and the other end of the upper clamp sleeve (51) is fixed to the end of the lower clamp sleeve (52) through a fastening bolt (6). A connecting rod (7) is fixedly connected between the upper clamp sleeves (51) of the two clamps (5). A driving box (8) is fixedly connected to the top of the upper clamp sleeve (51). A rotating shaft (9) is arranged in the driving box (8), and the rotating shaft (9) is movably connected to the inner wall of the driving box (8). A wire reel (10) and a worm gear (11) are fixedly connected to the rotating shaft (9). A pulling rope (12) is fixedly connected to the wire reel (10). The pulling rope (12) passes through the outside of the driving box (8) and is fixedly connected to the top of the valve body (1). A worm (13) is also arranged in the driving box (8). The worm (13) meshes with the worm gear (11), and the worm (13) is movably connected to the inner wall of the driving box (8). One end of the worm (13) extends to the outside of the driving box (8). The worms (13) on the two driving boxes (8) are connected through a transmission member (14). A driving rod (15) is installed at the end of the worm (13) on one of the driving boxes (8). The top of the valve body (1) is fixedly connected with an installation cover plate (16) by screws. The installation cover plate (16) is arranged in a ring shape and sleeved outside the valve stem (4). Limiting tooth blocks (17) are evenly distributed on more than one-fourth of the edge of the installation cover plate (16). An adjusting handle (18) is hinged to the top end of the valve body (1). The adjusting handle (18) is in a vertical shape. An inclined clamping rod (19) is fixedly connected to the bottom end of the adjusting handle (18). The end of the inclined clamping rod (19) is engaged with the limiting tooth block (17). A tension spring (20) is connected between the inclined clamping rod (19) and the installation cover plate (16).

2. The butterfly valve for convenient pipe connection according to claim 1, characterized in that: Two limiting blocks (21) are also fixedly connected to the top of the installation cover plate (16).

3. The butterfly valve for convenient pipe connection according to claim 1, characterized in that: The transmission member (14) includes a sprocket (141) and a chain (142). Two sprockets (141) are provided and are respectively fixed at the ends of the two worms (13). The two sprockets (141) are connected through a chain (142).

4. The butterfly valve for convenient pipe connection according to claim 1, characterized in that: An opening (22) is formed at the end of the worm (13). The driving rod (15) is movably inserted into the opening (22). Limiting spheres (23) are fixedly connected to both ends of the driving rod (15).

5. The butterfly valve for convenient pipe connection according to claim 1, characterized in that: An inspection cover (24) is arranged on the top of the driving box (8). The inspection cover (24) is fixedly connected to the driving box (8) by screws.

6. The butterfly valve for convenient pipe connection according to claim 1, characterized in that: A rubber pad is fixedly connected to the inner wall of the clamp (5).

7. The butterfly valve for convenient pipe connection according to claim 1, characterized in that: A positioning earring (25) is fixedly connected to the inner edge of the side of the upper clamp sleeve (51) away from the valve body (1).

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