Telescopic butterfly valve convenient to install

Abstract

A control valve rod is arranged on the outer side of the top of a valve shell, a telescopic sleeve is arranged on the side edge of the valve shell, a connecting flange is fixedly installed on the side edge of the valve shell, a guide frame is fixedly connected to the side, close to the connecting flange, of the valve shell in a sleeved mode, and a rotating sleeve is slidably connected to the outer side of the guide frame in a sleeved mode. The rotating sleeve is rotationally connected to the outer side of the end, close to the connecting flange, of the valve shell in a sleeved mode, and synchronous driving mechanisms are arranged on the side edge of the rotating sleeve and the side edge of the guide frame. Therefore, the multiple sets of reinforcing screws can synchronously move in the same direction to penetrate through the inserting grooves in the connecting flanges and the bolt grooves in the flanges on the outer sides of the connecting pipe bodies, and it is guaranteed that the inserting lengths of the multiple sets of reinforcing screws are consistent, so that the connecting stability between the connecting flanges and the pipe body flanges is improved; operation steps and labor consumption required by connection between the valve body and the pipe body by an operator are reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic butterfly valves, in particular to a telescopic butterfly valve which is easy to install. Background Art

[0002] Telescopic butterfly valve, also known as telescopic flange butterfly valve, is a valve used to achieve on-off and flow control in the pipeline system. Its characteristic is that the flange can be expanded and contracted within a certain range. This design can relieve the stress of the pipeline, protect the valve and pipeline, and ensure the normal flow of the medium.

[0003] According to the disclosed patent CN219994505U, a butterfly valve which is easy to install comprises a pneumatic butterfly valve and a connecting pipe body, wherein the lower end of the pneumatic butterfly valve is connected to a valve body plate for closing or opening, the lower end of the pneumatic butterfly valve is located on the outer side of the valve body plate and is connected and fixed with a valve steel ring, the two connecting pipe bodies are respectively connected to the left and right sides of the valve steel ring, and the left and right sides of the valve steel ring are fixed with a plurality of reinforcing steel plates distributed along the circumferential direction, and the reinforcing steel plates are provided with positioning holes; the butterfly valve which is easy to install of the utility model can better use fastening bolts to fix the connection between the butterfly valve and the pipe body through the provision of a plurality of waist-shaped mounting connecting holes, and can facilitate the cooperation of the fastening bolts to make the connection between the butterfly valve and the pipe body more stable by providing the reinforcing steel plate and the positioning block on the pipe body on the butterfly valve, so as to improve the installation stability and facilitate use, and is convenient for installation. In the process of realizing the utility model, the inventor found that at least the following problems in the prior art have not been solved. The problem of insufficient connection stability between the butterfly valve and the pipe body is solved by providing a positioning block and a fastening bolt between the butterfly valve and the connecting pipe body. However, in actual use, when docking the pipe body and the connecting flange on the side of the butterfly valve, the operator needs to sequentially insert multiple sets of fastening bolts in steps before passing them through the bolt holes between the pipe body and the connecting flange and fastening them with nuts. Such an installation method requires the operator to insert a large number of fastening bolts in different positions in steps, which is time-consuming and labor-intensive. The insertion length of the fastening bolts cannot be guaranteed to be the same, and the connection stability provided between the pipe body and the valve body will also change accordingly, thereby affecting the communication of the medium between the pipe body and the valve body. Therefore, a new technical solution needs to be designed to solve the problem. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a telescopic butterfly valve that is easy to install, so as to solve the current technical problem that the operator needs to tighten a large number of fastening bolts in different positions in steps, which is time-consuming and labor-intensive, and the insertion length of the fastening bolts cannot be guaranteed to be the same, thereby changing the connection stability between the pipe body and the valve body, thereby affecting the connectivity of the medium between the pipe body and the valve body.

[0005] To achieve the object of the present utility model, the technical solution adopted by the present utility model is as follows: Design a telescopic butterfly valve that is easy to install, including a valve housing. A control valve rod is arranged on the outer side of the top of the valve housing. A telescopic sleeve is arranged on the side of the valve housing. A connecting flange is fixedly installed on the side of the valve housing. A guiding frame is fixedly sleeved on the side of the valve housing close to the connecting flange. A rotating sleeve is slidably sleeved on the outer side of the guiding frame, and the rotating sleeve is rotatably sleeved on the outer side of one end of the valve housing close to the connecting flange;

[0006] Synchronous driving mechanisms are arranged on the sides of both the rotating sleeve and the guiding frame;

[0007] A fixing plate is fixedly installed on the side of the guiding frame, and the number of the fixing plates is several groups. A transmission mechanism is arranged on the side of each fixing plate.

[0008] Preferably, the transmission mechanism includes a rotating screw rod and a transmission sleeve. Each rotating screw rod is horizontally rotatably installed on the side of the fixing plate through a bearing, and a transmission sleeve is movably sleeved on the outer surface of each rotating screw rod.

[0009] Preferably, the synchronous driving mechanism includes a transmission gear ring and a follower gear. A follower gear is fixedly sleeved on the side of each rotating screw rod away from the connecting flange. A transmission gear ring is fixedly installed on the inner side of the rotating sleeve, and the inner side of the transmission gear ring meshes with the outer side of the follower gear.

[0010] Preferably, reinforcing screws are horizontally fixedly installed on the outer surfaces of both ends of each transmission sleeve, and the reinforcing screws penetrate and are slidably inserted into the inside of the guiding frame. Plugging slots are formed on the side of the connecting flange, and the number of the plugging slots is the same as the number of the reinforcing screws. The plugging slots and the reinforcing screws are at the same horizontal position.

[0011] Preferably, limiting grooves are formed inside the side of the guiding frame, and the number of the limiting grooves is the same as the number of the reinforcing screws. The reinforcing screws penetrate and are slidably inserted into the inside of the limiting grooves.

[0012] Preferably, connecting plates are fixedly installed on the outer surfaces of both ends of the rotating sleeve away from the connecting flange, and the connecting plates are located on the outer wall of the valve housing. A limiting bolt is screwed through each connecting plate internally by a thread, and a limiting slot is formed on the outer side of the valve housing, and the limiting bolt is movably inserted into the inside of the limiting slot.

[0013] Preferably, a limiting sliding groove is formed in the middle of the outer side of the guiding frame. Limiting sliding blocks are fixedly installed at both ends of the inner wall of the rotating sleeve close to the connecting flange, and the limiting sliding blocks are slidably inserted into the inside of the limiting sliding groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The utility model is provided with a synchronous drive mechanism and a transmission mechanism inside the guide frame and the rotating sleeve. Combining with the follower gears and transmission gear rings respectively arranged on the side of the rotating screw rod and inside the rotating sleeve, when the operator twists the rotating sleeve to make it rotate outside the valve housing and the guide frame, driving the transmission gear ring to rotate accordingly. Under the meshing transmission of the transmission gear ring and the follower gears, multiple groups of follower gears can be driven to rotate synchronously and in the same direction. Furthermore, under the transmission of the follower gears to the rotating screw rods, multiple groups of rotating screw rods can be driven to rotate synchronously and in the same direction outside the valve housing. Then, combining with the guiding and limiting effect of the limiting groove on the reinforcing screw rod, and under the rotating transmission of the rotating screw rods to the transmission sleeves, multiple groups of transmission sleeves can be driven to move horizontally synchronously and in the same direction outside the valve housing. Thus, the reinforcing screw rods located outside the transmission sleeves can move horizontally synchronously and in the same direction inside the limiting groove and the insertion groove until multiple groups of reinforcing screw rods pass through the insertion grooves inside the connecting flange and are inserted into the bolt grooves of the flange on the outer side of the connecting pipe body. While ensuring that the insertion lengths of multiple groups of reinforcing screw rods are consistent to improve the connection stability between the connecting flange and the pipe flange, the operation steps and labor consumption required by the operator for connecting the valve body and the pipe body are reduced, and the installation efficiency is improved.

[0016] 2. The utility model is provided with inverted T-shaped limiting sliding grooves and limiting sliding blocks on the outer side of the guide frame and the inner side of the rotating sleeve respectively. And the limiting sliding blocks are slidably installed inside the limiting sliding grooves. Combining with the guiding and sliding effect of the limiting sliding grooves on the limiting sliding blocks, the side of the rotating sleeve can only rotate outside the guide frame and will not arbitrarily break away from its surface. Thus, when the rotating sleeve rotates, the transmission gear ring inside it is always meshed with the follower gears located outside the guide frame. While ensuring the synchronous rationality of the transmission of the rotating screw rods and the reinforcing screw rods, the operator only needs to twist the rotating sleeve without limiting it to complete the synchronous adjustment of the positions of the reinforcing screw rods, further reducing the labor consumption of the operator during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the whole utility model;

[0018] Figure 2 is a schematic side-sectional structure diagram of the guide frame and the rotating sleeve of the utility model;

[0019] Figure 3 is a schematic top-sectional structure diagram of the whole utility model;

[0020] Figure 4 is a schematic three-dimensional structure diagram of the whole guide frame of the utility model;

[0021] Figure 5Schematic diagram of the enlarged structure of part A of the utility model

[0022] In the figure: 1. Valve housing; 11. Control valve stem; 12. Telescopic sleeve; 13. Connecting flange

[0023] 2. Rotating sleeve; 21. Driving gear ring; 22. Guide frame; 23. Fixed plate; 24. Rotating lead screw; 25. Follow-up gear; 26. Insertion slot; 27. Driving sleeve; 28. Reinforcing screw

[0024] 3. Connecting plate; 31. Limit slot; 32. Limit bolt

[0025] 4. Limit groove

[0026] 5. Limit slider; 51. Limit sliding groove Specific implementation mode

[0027] The present utility model will be further described below with reference to the drawings and embodiments

[0028] Embodiment 1: A telescopic butterfly valve convenient for installation, see Figures 1 to 5 , a control valve stem 11 is arranged on the outer side of the top of the valve housing 1, a telescopic sleeve 12 is arranged on the side of the valve housing 1, a connecting flange 13 is fixedly installed on the side of the valve housing 1, a guide frame 22 is fixedly sleeved on one side of the valve housing 1 close to the connecting flange 13, a rotating sleeve 2 is slidably sleeved on the outer side of the guide frame 22, and the rotating sleeve 2 is rotatably sleeved on the outer side of one end of the valve housing 1 close to the connecting flange 13. Synchronous driving mechanisms are arranged on the sides of the rotating sleeve 2 and the guide frame 22. A fixed plate 23 is fixedly installed on the side of the guide frame 22, and the number of the fixed plates 23 is several groups. A transmission mechanism is arranged on the side of each fixed plate 23. Under the mutual cooperation of the synchronous driving mechanism and the transmission mechanism, after the operator only twists the rotating sleeve 2, a plurality of groups of reinforcing screws 28 can move synchronously and in the same direction through the insertion slots 26 inside the connecting flange 13 and the bolt slots of the flange on the outer side of the connecting pipe body, while ensuring that the insertion lengths of the plurality of groups of reinforcing screws 28 are consistent to improve the connection stability between the connecting flange 13 and the pipe body flange, reducing the operation steps and labor consumption required for the operator to connect the valve body and the pipe body, and improving the installation efficiency

[0029] Specifically, see Figures 1 to 5 , the transmission mechanism includes a rotating lead screw 24 and a driving sleeve 27. Each rotating lead screw 24 is horizontally rotatably installed on the side of the fixed plate 23 through a bearing, and a driving sleeve 27 is movably sleeved on the outer surface of each rotating lead screw 24. Under the rotational transmission action of the rotating lead screw 24 on the driving sleeve 27, when the rotating lead screw 24 rotates, the driving sleeve 27 can synchronously drive the reinforcing bolt to move horizontally

[0030] Further, referring to Figures 1 to 5 , the synchronous drive mechanism includes a transmission gear ring 21 and a follower gear 25. A follower gear 25 is fixedly sleeved on one side of each rotating lead screw 24 away from the connecting flange 13. A transmission gear ring 21 is fixedly installed inside the rotating sleeve 2, and the inner side of the transmission gear ring 21 meshes with the outer side of the follower gear 25. Under the meshing transmission of the transmission gear ring 21 and the follower gear 25, after the operator twists the rotating sleeve 2, a plurality of rotating lead screws 24 can be driven to rotate synchronously and in the same direction to provide the power required for the movement of the reinforcement screw 28.

[0031] It should be noted that, referring to Figures 1 to 5 , two reinforcing screws 28 are horizontally and fixedly installed on the outer surfaces of both ends of each transmission sleeve 27, and the reinforcing screws 28 penetrate and are slidably inserted into the inside of the guide frame 22. A plug slot 26 is formed on the side of the connecting flange 13, and the number of plug slots 26 is the same as that of the reinforcing screws 28. The plug slot 26 and the reinforcing screw 28 are in the same horizontal position. By arranging the plug slot 26 and the reinforcing screw 28 in the same horizontal position, the reinforcing screw 28 can pass through the connecting flange 13 after moving and be connected to the pipe flange outside the connecting flange 13.

[0032] It should be noted that, referring to Figures 1 to 5 , a limiting groove 4 is formed inside the side of the guide frame 22, and the number of limiting grooves 4 is the same as that of the reinforcing screws 28. The reinforcing screw 28 penetrates and is slidably inserted into the inside of the limiting groove 4. Under the guiding and limiting action of the limiting groove 4 on the reinforcing screw 28, when the rotating lead screw 24 rotates, the transmission sleeve 27 will not rotate axially but can only move horizontally, thereby ensuring the reasonable movement adjustment of the reinforcing screw 28.

[0033] It is worth introducing that, referring to Figures 1 to 5 , two connecting plates 3 are fixedly installed on the outer surfaces of both ends of the rotating sleeve 2 away from the connecting flange 13, and the connecting plates 3 are located on the outer wall of the valve housing 1. A limiting bolt 32 is screwed through each connecting plate 3. A limiting slot 31 is formed on the outer side of the valve housing 1, and the limiting bolt 32 is movably inserted into the limiting slot 31. By screwing the limiting bolt 32 and inserting it into the limiting slot 31, the rotating sleeve 2 can be installed and reinforced to prevent any rotation of the rotating sleeve 2 from affecting the connection stability between the connecting flange 13 and the pipe body.

[0034] It is worth introducing that, referring to Figures 1 to 5, a limiting chute 51 is provided in the middle of the outer side of the guiding frame 22. Both ends of the inner wall of one side of the rotating sleeve 2 close to the connecting flange 13 are fixedly provided with limiting sliders 5, and the limiting sliders 5 are slidably inserted into the limiting chute 51. Under the guiding and sliding action of the limiting chute 51 on the limiting sliders 5, when the rotating sleeve 2 rotates, the transmission gear ring 21 inside it is always meshed with the follower gear 25 located outside the guiding frame 22. Thus, while ensuring the rationality of the synchronous transmission of the rotating lead screw 24 and the reinforcing screw 28, the operator only needs to turn the rotating sleeve 2 without limiting it to complete the synchronous adjustment of the position of the reinforcing screw 28, further reducing the installation labor consumption of the operator.

[0035] During operation, after the connecting flange 13 on the side of the valve housing 1 is aligned with the flange on the side of the pipe body to be connected and used, when the insertion slot 26 provided on the side of the connecting flange 13 is aligned with the notch on the side of the pipe body flange, the limiting bolt 32 is turned so that its bottom disengages from the inner bottom wall of the limiting slot 31. After the limiting bolt 32 loses the acting force of pushing and limiting the rotating sleeve 2, the operator pushes the rotating sleeve 2. The rotating sleeve 2 rotates outside the valve housing 1 and the guiding frame 22 under the guiding and sliding action of the limiting chute 51 on the limiting sliders 5, synchronously driving the transmission gear ring 21 inside the rotating sleeve 2 to rotate synchronously. Under the meshing transmission action of the transmission gear ring 21 and the follower gear 25, multiple groups of follower gears 25 can be driven to rotate synchronously and in the same direction inside the rotating sleeve 2. Furthermore, multiple groups of rotating lead screws 24 provided on the side of the guiding frame 22 can be driven to rotate synchronously and in the same direction. Under the rotating transmission action of the rotating lead screw 24 on the transmission sleeve 27 and the guiding and limiting action of the limiting groove 4 on the reinforcing screw 28, the transmission sleeve 27 will not rotate axially as the rotating lead screw 24 rotates. The transmission sleeve 27 can move rightward synchronously as the rotating lead screw 24 rotates. Then, multiple groups of reinforcing screws 28 can be driven to move rightward synchronously and in the same direction inside the limiting insertion and pass through the insertion slot 26. After the reinforcing screw 28 continuously moves rightward and passes through the connecting hole provided on the side of the pipe body flange, the operator screws a nut onto the outer wall of the reinforcing screw 28 protruding from the side of the pipe body flange on the side of the pipe body flange. Then, the limiting bolt 32 is turned and inserted into the limiting slot 31 until the bottom of the limiting bolt 32 fits tightly against the inner bottom wall of the limiting slot 31. Thus, the limiting bolt 32 can perform a pushing and limiting treatment on the rotation of the rotating sleeve 2, preventing the arbitrary rotation of the rotating sleeve 2 from affecting the connection stability of the reinforcing screw 28 to the pipe body and the connecting flange 13. Then, the telescopic sleeve 12 is adjusted to be connected to other pipelines, and the control valve rod 11 is turned to control the rotation of the butterfly plate inside the valve housing 1, thereby realizing the control of the flow rate of the conveyed medium.

[0036] In addition, the components designed by the present utility model are all common standard components or components known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or through conventional experimental methods. Those skilled in the art can fully implement them without further elaboration. The content protected by the present utility model does not involve improvements to the internal structure and method either.

[0037] The embodiments disclosed in the present utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are all within the protection scope of the present utility model.

Claims

1. A telescopic butterfly valve that is easy to install, comprising a valve housing (1), a control valve stem (11) is arranged on the outer side of the top of the valve housing (1), a telescopic sleeve (12) is arranged on the side of the valve housing (1), and a connecting flange (13) is fixedly installed on the side of the valve housing (1), characterized in that: A guide frame (22) is fixedly sleeved on one side of the valve housing (1) close to the connecting flange (13), a rotating sleeve (2) is slidably sleeved on the outer side of the guide frame (22), and the rotating sleeve (2) is rotatably sleeved on the outer side of one end of the valve housing (1) close to the connecting flange (13); The sides of the rotating sleeve (2) and the guide frame (22) are both provided with synchronous driving mechanisms; A fixing plate (23) is fixedly installed on the side of the guide frame (22), and the number of the fixing plates (23) is several groups, and a transmission mechanism is arranged on the side of each fixing plate (23).

2. The telescopic butterfly valve that is easy to install as claimed in claim 1, characterized in that: The transmission mechanism comprises a rotating screw rod (24) and a transmission sleeve (27), each of the rotating screw rods (24) being laterally rotatably mounted on the side of the fixed plate (23) via a bearing, and the outer surface of each rotating screw rod (24) being movably sleeved with a transmission sleeve (27).

3. The telescopic butterfly valve that is easy to install as claimed in claim 2, characterized in that: The synchronous drive mechanism comprises a transmission gear ring (21) and a follower gear (25), and a follower gear (25) is fixedly sleeved on a side of each rotating screw (24) away from the connecting flange (13). The transmission gear ring (21) is fixedly mounted on the inner side of the rotating sleeve (2), and the inner side of the transmission gear ring (21) and the outer side of the follower gear (25) are meshed.

4. The telescopic butterfly valve that is easy to install as claimed in claim 2, characterized in that: Reinforcing screws (28) are transversely fixedly installed on both end surfaces of the outer side of each transmission sleeve (27), and the reinforcing screws (28) penetrate and are slidably inserted into the guide frame (22). Insertion grooves (26) are opened on the side of the connecting flange (13), and the number of the insertion grooves (26) is the same as the number of the reinforcing screws (28), and the insertion grooves (26) and the reinforcing screws (28) are at the same horizontal position.

5. The telescopic butterfly valve that is easy to install as claimed in claim 4, characterized in that: A limiting groove (4) is provided inside the side of the guide frame (22), and the number of the limiting grooves (4) is the same as the number of the reinforcing screw rods (28). The reinforcing screw rods (28) penetrate through and are slidably inserted into the limiting grooves (4).

6. The telescopic butterfly valve that is easy to install as claimed in claim 1, characterized in that: Connecting plates (3) are fixedly mounted on both end surfaces of the rotating sleeve (2) on the side away from the connecting flange (13), and the connecting plates (3) are located on the outer wall of the valve housing (1). A limiting bolt (32) is threadedly inserted through the interior of each connecting plate (3), and a limiting slot (31) is provided on the outer side of the valve housing (1), and the limiting bolt (32) is movably inserted into the interior of the limiting slot (31).

7. The telescopic butterfly valve that is easy to install as claimed in claim 1, characterized in that: A limiting slide groove (51) is provided at the middle end of the outer side of the guide frame (22), and limiting slide blocks (5) are fixedly installed at both ends of the inner wall of one side of the rotating sleeve (2) close to the connecting flange (13), and the limiting slide block (5) is slidably inserted into the limiting slide groove (51).

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