A special flange connecting structure for special-shaped pipes

Abstract

The utility model discloses a kind of flange special connecting structure suitable for special-shaped pipeline, belong to special-shaped pipeline flange connection technical field, including bolt and nut, further including limiting mechanism, the limiting mechanism includes the swivel block being located at bolt and nut end part, the surface of the swivel block is equipped with fixed frame, the inner wall slidingly connected of the fixed frame has resistance rod, the surface of the resistance rod is connected to the inner wall of swivel block. Through the above-mentioned mode, by bolt and nut mutual cooperation, special-shaped pipe and valve body are stably connected, by multiple swivel blocks respectively to the one end of bolt and nut is blocked, by resistance rod and stop block mutual cooperation, and then the swivel block is locked, compared with the looseness of valve body and pipeline connection in the fluid flow of existing, the present mode is blocked stably by bolt and nut, ensure that fluid in flow, valve body and special-shaped pipe connection place is stable.

Description

Technical Field

[0001] This utility model relates to the field of flange connection technology for irregular pipes, and specifically to a special flange connection structure suitable for irregular pipes. Background Technology

[0002] Flanges for irregularly shaped pipes are usually pipes with cross-sectional shapes that are not common regular shapes such as circles or squares. They may be elliptical, polygonal, irregular curved, etc. Irregularly shaped pipe flanges are commonly used in flange ball valves in industrial production and irregularly shaped pipes in building engineering.

[0003] According to the search, the Chinese patent "Plug Valve with Convenient Disassembly to Pipeline at Both Ends" authorized announcement number "CN222702681U" uses a special-shaped block, connecting rod, movable block one, spring, guide rod, movable block two and threaded rod to cooperate with each other, so as to connect the valve body to the pipeline, and the assembly of the valve body and pipeline is simple.

[0004] In the aforementioned application, the fluid flowing between the valve body and the pipeline will cause vibration at the connection between the valve body and the pipeline, which will easily cause the spring to drive the movable block 2 to extend or retract, which may lead to loosening at the connection between the valve body and the pipeline.

[0005] Based on this, this utility model designs a special flange connection structure suitable for irregularly shaped pipes to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a special flange connection structure suitable for irregularly shaped pipes.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A special flange connection structure suitable for irregularly shaped pipes includes bolts and nuts, and also includes a limiting mechanism. The limiting mechanism includes a rotating block disposed at the end of the bolt and nut. The surface of the rotating block is provided with a fixing frame. A resistance rod is slidably connected to the inner wall of the fixing frame. The surface of the resistance rod is engaged with the inner wall of the rotating block. A stop block is slidably connected to the inner wall of the fixing frame. A friction block is slidably connected to the inner wall of the fixing frame. The surface of the friction block is engaged with the inner wall of the stop block.

[0009] Furthermore, the surface of the bolt is provided with a guide rod, one end of which is a flat-topped cone shape.

[0010] Furthermore, recesses are provided on both sides of the friction block, and the inner walls of the recesses are slidably connected to the inner walls of the fixed frame and the stop block in sequence.

[0011] Furthermore, a first spring is fixedly connected to the inner top wall of the fixed frame, and the bottom end of the first spring is fixedly connected to the top end of the resistance rod.

[0012] Furthermore, a groove is provided on one side of the fixed frame, and the surface of the stop block is slidably connected to the inner wall of the groove.

[0013] Furthermore, a second spring is fixedly connected to the front end of the stop block, and the other end of the second spring is fixedly connected to the inner wall of the slide groove.

[0014] Furthermore, the surface of the rotating block is provided with a limiting block.

[0015] Furthermore, a baffle is fixedly connected to the front end of the block, and the front end of the baffle is fixedly connected to the inner wall of the groove. Beneficial effects

[0016] By using bolts and nuts to securely connect the shaped pipe to the valve body, multiple screw blocks seal one end of each bolt and nut. A resistance rod and a stop block work together to lock the screw blocks. Compared to existing methods where the connection between the valve body and the pipe is prone to loosening during fluid flow, this method ensures the stability of the connection between the valve body and the shaped pipe during fluid flow by securely sealing the bolts and nuts.

[0017] The guide rod, which has a flat-topped cone shape at one end, precisely guides the irregular tube against the valve body, ensuring that the irregular tube is precisely aligned with the reserved hole on the valve body. The first spring causes the resistance rod to automatically move down and engage with the rotating block. The second spring causes the stop block to automatically move and slide into the fixed frame. The baffle cloth seals the slide groove, thereby reducing impurities adhering to the surface of the second spring. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional view of the main structure of a special flange connection structure suitable for irregularly shaped pipes;

[0020] Figure 2 A three-dimensional view of bolts, nuts, and screw blocks for a special flange connection structure suitable for irregularly shaped pipes;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a three-dimensional diagram of a limiting mechanism for a special flange connection structure suitable for irregularly shaped pipes.

[0023] The labels in the diagram represent:

[0024] 1. Bolt; 2. Nut; 3. Limiting mechanism; 31. Rotating block; 32. Fixing frame; 33. Resistance rod; 34. Stop block; 35. Friction block; 36. First spring; 37. Slide groove; 38. Second spring; 39. Protective cloth; 310. Guide rod; 311. Limiting block; 312. Concave hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A special flange connection structure suitable for irregularly shaped pipes includes a bolt 1 and a nut 2, and a limiting mechanism 3. The limiting mechanism 3 includes a rotating block 31 located at the ends of the bolt 1 and the nut 2. The surface of the rotating block 31 is provided with a fixing frame 32. A resistance rod 33 is slidably connected to the inner wall of the fixing frame 32. The surface of the resistance rod 33 is engaged with the inner wall of the rotating block 31. A stop block 34 is slidably connected to the inner wall of the fixing frame 32. A friction block 35 is slidably connected to the inner wall of the fixing frame 32. The surface of the friction block 35 is engaged with the inner wall of the stop block 34.

[0028] The surface of bolt 1 is provided with a special-shaped tube, and one end of the special-shaped tube is provided with a valve body. The surface of one side of the fixing frame 32 is fixedly connected to the surface of the special-shaped tube, and the surface of the other side of the fixing frame 32 is fixedly connected to the surface of the valve body. One end of one side of the rotating block 31 is rotatably connected to one end of the special-shaped tube, and one end of the other side of the rotating block 31 is rotatably connected to one end of the valve body.

[0029] In this embodiment of the utility model, when the shaped tube needs to be connected to the valve body, one end of the shaped tube is aligned and abutted against one end of the valve body. Bolt 1 is passed through the shaped tube and the valve body in sequence, so that the end of bolt 1 abuts against one end of the shaped tube. An electric wrench is used to thread nut 2 onto the surface of bolt 1 and abut against one end of the valve body. The other three sets of bolts 1 and nuts 2 are connected in the same manner, so that the shaped tube can be quickly installed on the valve body. Rotate the rotating block 31 so that one side of one rotating block 31 abuts against one end of bolt 1 and the other side of the rotating block 31 abuts against one end of nut 2. At this time, push the resistance rod 33 down and engage it in the rotating block 31. Push the stop block 34 into the fixed frame 32 so that the bottom of the stop block 34 contacts the top of the resistance rod 33, so that the rotating block 31 stably seals the bolt 1 and nut 2, so that the valve body and the shaped tube are firmly connected.

[0030] At this point, fix the other end of the irregular tube to the corresponding pipe for connection. After the connection is completed, the valve body can be opened to transport the fluid to the designated location.

[0031] In this embodiment of the utility model, the bolt 1 and nut 2 cooperate to stably connect the shaped tube to the valve body. Multiple rotating blocks 31 respectively seal one end of the bolt 1 and nut 2. The resistance rod 33 and the stop block 34 cooperate to lock the rotating blocks 31. Compared with the existing method where the connection between the valve body and the pipeline is prone to loosening during fluid flow, this method ensures the stability of the connection between the valve body and the shaped tube during fluid flow by stably sealing the bolt 1 and nut 2.

[0032] In some embodiments, such as Figure 4 As shown, in a preferred embodiment of this utility model, the surface of the bolt 1 is provided with a guide rod 310, one end of which is a flat-topped cone shape. Both sides of the friction block 35 are provided with recessed holes 312. The inner walls of the recessed holes 312 are slidably connected to the inner walls of the fixed frame 32 and the stop block 34 in sequence. The inner top wall of the fixed frame 32 is fixedly connected with a first spring 36. The bottom end of the first spring 36 is fixedly connected to the top end of the resistance rod 33. The front end of the stop block 34 is fixedly connected with a second spring 38. The other end of the second spring 38 is fixedly connected to the inner wall of the slide groove 37. The front end of the stop block 34 is fixedly connected with a baffle 39. The front end of the baffle 39 is fixedly connected to the inner wall of the slide groove 37. The resistance rod 33, the stop block 34 and the friction block 35 are all carbon steel components. Because the surface of carbon steel is relatively rough, the surfaces of the resistance rod 33, the stop block 34 and the friction block 35 have a high coefficient of friction. The bolt 1, the nut 2, the first spring 36 and the second spring 38 are all 316 stainless steel components.

[0033] One end of the guide rod 310 is fixedly connected to one end of the shaped tube, and the surface of the guide rod 310 is slidably connected to the inner wall of the valve body.

[0034] In this embodiment of the utility model, the guide rod 310, which has a flat-topped cone shape at one end, precisely guides the irregular tube against the valve body, ensuring that the irregular tube is precisely aligned with the reserved hole on the valve body. The first spring 36 causes the resistance rod 33 to automatically move down and engage with the rotating block 31. The second spring 38 causes the stop block 34 to automatically move and slide into the fixed frame 32. The baffle 39 seals the slide groove 37, thereby reducing impurities adhering to the surface of the second spring 38.

[0035] In some embodiments, such as Figure 4 As shown, in a preferred embodiment of the present invention, the surface of the rotating block 31 is provided with a limiting block 311.

[0036] One side of the limiting block 311 is fixedly connected to the surface of the shaped tube, and the other side of the limiting block 311 is fixedly connected to the surface of the valve body.

[0037] In this embodiment of the utility model, the rotating block 31 is limited by the limiting block 311 to ensure that one side of the rotating block 31 can accurately contact one end of the bolt 1 or nut 2.

[0038] It should be noted that the bolts 1, nuts 2, valve bodies and special-shaped tubes mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A special flange connection structure suitable for irregularly shaped pipes, comprising bolts (1) and nuts (2), characterized in that: It also includes a limiting mechanism (3), which includes a rotating block (31) located at the ends of the bolt (1) and the nut (2). The surface of the rotating block (31) is provided with a fixing frame (32). The inner wall of the fixing frame (32) is slidably connected with a resistance rod (33). The surface of the resistance rod (33) is engaged with the inner wall of the rotating block (31). The inner wall of the fixing frame (32) is slidably connected with a stop block (34). The inner wall of the fixing frame (32) is slidably connected with a friction block (35). The surface of the friction block (35) is engaged with the inner wall of the stop block (34).

2. The special flange connection structure for irregularly shaped pipes according to claim 1, characterized in that, The surface of the bolt (1) is provided with a guide rod (310), and one end of the surface of the guide rod (310) is a flat-topped cone shape.

3. The special flange connection structure for irregularly shaped pipes according to claim 1, characterized in that, The friction block (35) has recessed holes (312) on both sides, and the inner walls of the recessed holes (312) are slidably connected to the inner walls of the fixed frame (32) and the stop block (34) in sequence.

4. The special flange connection structure for irregularly shaped pipes according to claim 1, characterized in that, The inner top wall of the fixed frame (32) is fixedly connected to a first spring (36), and the bottom end of the first spring (36) is fixedly connected to the top end of the resistance rod (33).

5. The special flange connection structure for irregularly shaped pipes according to claim 1, characterized in that, A groove (37) is provided on one side of the fixed frame (32), and the surface of the stop block (34) is slidably connected to the inner wall of the groove (37).

6. The special flange connection structure for irregularly shaped pipes according to claim 5, characterized in that, The front end of the stop (34) is fixedly connected to a second spring (38), and the other end of the second spring (38) is fixedly connected to the inner wall of the slide (37).

7. The special flange connection structure for irregularly shaped pipes according to claim 1, characterized in that, The surface of the rotating block (31) is provided with a limiting block (311).

8. The special flange connection structure for irregularly shaped pipes according to claim 5, characterized in that, The front end of the stop block (34) is fixedly connected to a baffle (39), and the front end of the baffle (39) is fixedly connected to the inner wall of the slide groove (37).

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