Flexible sealing telescopic butterfly valve

Abstract

The utility model relates to the technical field of telescopic butterfly valves, and discloses a soft sealing telescopic butterfly valve which comprises a butterfly valve body, a telescopic mechanism is arranged at the right end of the butterfly valve body and comprises a telescopic pipe, and the left end of the telescopic pipe is movably connected into the right end of the butterfly valve body in a sleeved mode. According to the butterfly valve, the telescopic pipe, the second flange plate, the rectangular limiting cover, the adjusting rod, the positioning block, the threaded opening, the rotary knob, the screw rod and the threaded block are matched, and the overall length of the butterfly valve is adjusted by pulling the second flange plate and the telescopic pipe; the knob and the screw can be rotated, one end of the screw drives the threaded block to be spirally connected into the threaded opening in the left side of the positioning block, so that the positioning block, the adjusting rod, the second flange plate and the telescopic pipe are positioned, the stability of the telescopic pipe and the second flange plate is improved, and the overall length of the butterfly valve can be conveniently and rapidly adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic butterfly valves, and more specifically to a soft-sealed telescopic butterfly valve. Background Art

[0002] Telescopic butterfly valve is a component used to realize the on-off and flow control of pipeline system. Telescopic butterfly valve is a valve that uses a circular butterfly plate as the opening and closing part and rotates with the valve stem to open, close and adjust the fluid channel. The butterfly plate of the telescopic butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the telescopic butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When it rotates to 90°, the valve is fully open.

[0003] At present, during the installation of traditional butterfly valves, the overall length adjustment process of the butterfly valve is rather cumbersome and complicated, which makes it inconvenient to adjust the overall length of the butterfly valve to the required length, and reduces the efficiency of the overall length adjustment of the butterfly valve during installation, which needs to be improved. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a soft-sealed telescopic butterfly valve to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a soft-sealed telescopic butterfly valve, comprising a butterfly valve body, a telescopic mechanism being provided at the right end of the butterfly valve body, the telescopic mechanism comprising a telescopic tube, the left end of the telescopic tube being movably sleeved inside the right end of the butterfly valve body, the right end of the telescopic tube being fixedly connected with a No. 2 flange, the right ends of the top and bottom of the butterfly valve body being fixedly installed with rectangular limit covers, the right end of the rectangular limit cover being movably sleeved with an adjusting rod, the right end of the adjusting rod being fixedly connected to the left side of the No. 2 flange, the left end of the adjusting rod being fixedly connected with a positioning block, the outer wall of the positioning block being slidably sleeved inside the rectangular limit cover, a threaded opening being provided on the left side of the positioning block, and a threaded block matching the inner wall of the threaded opening being provided at the left end of the inner cavity of the rectangular limit cover.

[0006] Furthermore, a screw rod is threadedly sleeved on the left end of the rectangular limiting cover, a knob is fixedly connected to the left end of the screw rod, and the right end of the screw rod is fixedly connected to the left side of the threaded block.

[0007] Furthermore, guide slots are provided at the right ends of the upper and lower inner walls of the butterfly valve body, guide sliders are fixedly connected to the left ends of the upper and lower inner walls of the telescopic tube, and the outer walls of the guide sliders are slidably sleeved inside the guide slots.

[0008] Furthermore, two soft rubber sealing rings are fixedly embedded on the right end of the inner wall of the butterfly valve body, and the inner walls of the two soft rubber sealing rings are sealingly sleeved on the outer wall of the telescopic tube.

[0009] Furthermore, a flange No. 1 is fixedly connected to the left end of the butterfly valve body, and a disc plate is installed inside the butterfly valve body.

[0010] Technical effects and advantages of the utility model:

[0011] 1. The utility model adopts the cooperation of the telescopic tube, the No. 2 flange, the rectangular limit cover, the adjusting rod, the positioning block, the threaded opening, the knob, the screw and the threaded block, and adjusts the overall length of the butterfly valve by pulling the No. 2 flange and the telescopic tube. After the No. 1 flange and the No. 2 flange at both ends of the butterfly valve are connected to the external pipeline, the knob and the screw can be rotated, and one end of the screw drives the threaded block to be spirally connected to the inside of the threaded opening on the left side of the positioning block, so as to position the positioning block, the adjusting rod, the No. 2 flange and the telescopic tube, increase the stability of the telescopic tube and the No. 2 flange, and facilitate the rapid adjustment of the overall length of the butterfly valve.

[0012] 2. The utility model adopts the cooperation of the guide slider and the guide slot to facilitate the horizontal guidance of the telescopic tube, maintain the stability of the telescopic tube when moving, and increase the sealing between the butterfly valve body and the telescopic tube by setting two soft rubber sealing rings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.

[0015] Figure 3 It is a schematic cross-sectional view of a rectangular limiting cover and a positioning block structure of the utility model.

[0016] Figure 4 It is a side view schematic diagram of the positioning block structure of the utility model.

[0017] The accompanying drawings are marked as follows: 1. butterfly valve body; 2. telescopic mechanism; 3. No. 1 flange; 4. disc plate; 21. telescopic tube; 22. No. 2 flange; 23. rectangular limit cover; 231. adjusting rod; 232. positioning block; 233. threaded mouth; 234. knob; 235. screw; 236. threaded block; 24. guide slider; 25. guide groove; 26. soft rubber sealing ring. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solution of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The soft-sealed telescopic butterfly valve involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0019] Embodiment 1:

[0020] like Figure 1-4 As shown, a soft-sealed telescopic butterfly valve comprises a butterfly valve body 1, a telescopic mechanism 2 is provided at the right end of the butterfly valve body 1, the telescopic mechanism 2 comprises a telescopic tube 21, the left end of the telescopic tube 21 is movably sleeved inside the right end of the butterfly valve body 1, the right end of the telescopic tube 21 is fixedly connected with a second flange 22, the right ends of the top and bottom of the butterfly valve body 1 are fixedly installed with rectangular limit covers 23, the right end of the rectangular limit cover 23 is movably sleeved with an adjusting rod 231, the right end of the adjusting rod 231 is fixedly connected to the left side of the second flange 22, and the left end of the adjusting rod 231 is fixedly connected to the left side of the second flange 22. There is a positioning block 232, the outer wall of the positioning block 232 is slidably sleeved inside the rectangular limit cover 23, a threaded opening 233 is opened on the left side of the positioning block 232, and a threaded block 236 adapted to the inner wall of the threaded opening 233 is provided at the left end of the inner cavity of the rectangular limit cover 23, a screw rod 235 is threadedly sleeved on the left end of the rectangular limit cover 23, a knob 234 is fixedly connected to the left end of the screw rod 235, and the right end of the screw rod 235 is fixedly connected to the left side of the threaded block 236, a No. 1 flange 3 is fixedly connected to the left end of the butterfly valve body 1, and a disc plate 4 is installed inside the butterfly valve body 1.

[0021] In this embodiment, by pulling the No. 2 flange 22 and the telescopic tube 21, the No. 2 flange 22 drives the positioning block 232 to slide inside the rectangular limit cover 23 through the adjusting rod 231, so as to facilitate the adjustment of the length of the butterfly valve during use. By setting the No. 1 flange 3 and the No. 2 flange 22, it is convenient to connect the two ends of the butterfly valve with the external pipeline. By setting the knob 234, it is convenient for the staff to rotate the screw 235 and drive the threaded block 236 to move spirally through the screw 235. The threaded block 236 can be spirally connected to the threaded opening 233 on the left side of the positioning block 232, so as to position the positioning block 232 and the adjusting rod 231, and the stability of the telescopic tube 21 and the No. 2 flange 22 is increased by positioning the positioning block 232 and the adjusting rod 231.

[0022] Embodiment 2:

[0023] like Figure 1-4As shown, guide grooves 25 are provided at the right ends of the upper and lower sides of the inner wall of the butterfly valve body 1, and guide sliders 24 are fixedly connected to the left ends of the upper and lower sides of the telescopic tube 21. The outer wall of the guide slider 24 is slidably sleeved inside the guide groove 25, and two soft rubber sealing rings 26 are fixedly embedded at the right end of the inner wall of the butterfly valve body 1. The inner walls of the two soft rubber sealing rings 26 are sealingly sleeved on the outer wall of the telescopic tube 21.

[0024] In this embodiment, when the left end of the telescopic tube 21 moves to the right end inside the butterfly valve body 1, the telescopic tube 21 can drive the guide slider 24 to slide horizontally inside the guide slot 25, and use the guide slider 24 and the guide slot 25 to horizontally guide the telescopic tube 21 to maintain the stability of the telescopic tube 21 when moving. Through the provision of two soft rubber sealing rings 26, it is convenient to perform soft sealing between the butterfly valve body 1 and the telescopic tube 21.

[0025] In summary, if Figure 1-4 As shown, when using this soft-sealed telescopic butterfly valve, first connect the No. 1 flange 3 at the left end of the butterfly valve body 1 to one end of the external pipeline, then pull the No. 2 flange 22, so that the No. 2 flange 22 drives the telescopic tube 21, the adjusting rod 231 and the positioning block 232 to move, and the telescopic tube 21 drives the guide slider 24 to slide horizontally inside the guide slide groove 25, so that the No. 2 flange 22 can be moved to one end of another external pipeline, and then the No. 2 flange 22 is connected to the pipeline. At this time, turn the knob 234 and the screw 235, so that the right end of the screw 235 drives the threaded block 236 to be spirally connected to the threaded opening 233 on the left side of the positioning block 232, thereby positioning the positioning block 232, the adjusting rod 231, the No. 2 flange 22 and the telescopic tube 21, increasing the stability of the telescopic tube 21 and the No. 2 flange 22, and completing the installation of the telescopic butterfly valve.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A soft-sealed telescopic butterfly valve, comprising a butterfly valve body (1), characterized in that: The right end of the butterfly valve body (1) is provided with a telescopic mechanism (2), the telescopic mechanism (2) comprises a telescopic tube (21), the left end of the telescopic tube (21) is movably sleeved inside the right end of the butterfly valve body (1), the right end of the telescopic tube (21) is fixedly connected to a second flange (22), the right ends of the top and bottom of the butterfly valve body (1) are fixedly mounted with rectangular limit covers (23), the right end of the rectangular limit cover (23) is movably sleeved with an adjustment rod (231 ), the right end of the adjusting rod (231) is fixedly connected to the left side of the second flange (22), the left end of the adjusting rod (231) is fixedly connected to a positioning block (232), the outer wall of the positioning block (232) is slidably sleeved inside the rectangular limiting cover (23), a threaded opening (233) is provided on the left side of the positioning block (232), and a threaded block (236) adapted to the inner wall of the threaded opening (233) is provided at the left end of the inner cavity of the rectangular limiting cover (23).

2. A soft-sealed telescopic butterfly valve according to claim 1, characterized in that: The left end of the rectangular limiting cover (23) is threadedly sleeved with a screw rod (235), the left end of the screw rod (235) is fixedly connected to a knob (234), and the right end of the screw rod (235) is fixedly connected to the left side of a threaded block (236).

3. The soft-sealed telescopic butterfly valve according to claim 1, characterized in that: The right ends of the upper and lower inner walls of the butterfly valve body (1) are provided with guide slide grooves (25), and the left ends of the upper and lower inner walls of the telescopic tube (21) are fixedly connected with guide sliders (24), and the outer wall of the guide slider (24) is slidably sleeved inside the guide slide grooves (25).

4. The soft-sealed telescopic butterfly valve according to claim 1, characterized in that: Two soft rubber sealing rings (26) are fixedly embedded at the right end of the inner wall of the butterfly valve body (1), and the inner walls of the two soft rubber sealing rings (26) are sealingly sleeved on the outer wall of the telescopic tube (21).

5. The soft-sealed telescopic butterfly valve according to claim 1, characterized in that: The left end of the butterfly valve body (1) is fixedly connected to a first flange (3), and a disc plate (4) is installed inside the butterfly valve body (1).

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