Polyethylene spiral corrugated pipe connecting part forming device

Abstract

The utility model relates to the technical field of spiral corrugated pipes, in particular to a polyethylene spiral corrugated pipe connecting part forming device which comprises a communicating pipe, two spiral corrugated pipes are arranged at the two ends of the communicating pipe in a sleeved mode, and sealing rings attached to the outer wall of the communicating pipe are arranged on the outer walls of the two spiral corrugated pipes in a sleeved mode. The outer wall of the communicating pipe is provided with four rotating grooves which are circumferentially arranged at equal intervals, and limiting strips are rotationally installed in the four rotating grooves through pin shafts. Through rotation of the limiting strips, the tooth parts of the limiting strips are meshed with the threads on the outer walls of the spiral corrugated pipes, the tensile capacity of the spiral corrugated pipes is improved, the situation that the two polyethylene spiral corrugated pipes are disconnected from the connecting position due to thermal expansion and cold contraction of the spiral corrugated pipes is avoided, the firmness between the spiral corrugated pipes is improved, and the service life of the spiral corrugated pipes is prolonged. The limiting rod is pulled to move towards the connecting rod through cooperation with stretching and retracting of the spring, one end of the connecting rod is limited and fixed, the connecting rod fixes the limiting ring, and the situation that the limiting ring moves towards the fixing ring to relieve limiting of the limiting strip is prevented.

Description

Technical Field

[0001] This utility model relates to the field of spiral corrugated pipe technology, and in particular to a molding device for connecting components of polyethylene spiral corrugated pipes. Background Technology

[0002] Polyethylene spiral corrugated pipe is a composite PE material using U-shaped steel strips, which greatly improves the ring stiffness of the pipe without increasing the cost. Under the same weight, it has a significantly higher strength than spiral wound pipe and kraft pipe.

[0003] When using polyethylene spiral corrugated pipes, it is usually necessary to connect two polyethylene spiral corrugated pipes to ensure both connection and airtightness. Existing technologies mostly achieve airtightness by sealing the two polyethylene spiral corrugated pipes together, but this method has weak tensile strength. Under different environments and with varying external temperatures, the polyethylene spiral corrugated pipes are prone to thermal expansion and contraction, which can cause the two polyethylene spiral corrugated pipes to break at the connection point, resulting in a fracture between the connecting pipes. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor tensile strength at pipe joints in the prior art, and to propose a molding device for polyethylene spiral corrugated pipe connecting components.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A polyethylene spiral corrugated pipe connecting component forming device includes a connecting pipe, two spiral corrugated pipes are sleeved at both ends of the connecting pipe, and a sealing ring is sleeved on the outer wall of each of the two spiral corrugated pipes and fits against the outer wall of the connecting pipe. The outer wall of the connecting pipe has four circumferentially evenly spaced rotating grooves, and limit strips are rotatably installed in each of the four rotating grooves by means of pins. The outer walls of the four limit strips are collectively sleeved with limit rings to limit the position of the limit strips.

[0007] Preferably, a fixed ring with a hollow circular structure is fixedly installed on the outer wall of the connecting pipe, and a plurality of first fixed seats with equal circumferences are fixedly installed on the fixed ring.

[0008] Preferably, the outer wall of the limiting ring is fixedly equipped with four second fixing seats arranged in equal circumferences, and a connecting rod is provided between the first fixing seat and the second fixing seat.

[0009] Preferably, one end of the connecting rod is rotatably connected to the first fixed seat via a pin, and the other end of the connecting rod has a through hole, in which a limit rod is slidably disposed.

[0010] Preferably, a spring is fixedly installed on the outer wall of the second fixed seat, and a fixing plate is fixedly installed on the other end of the spring, and the fixing plate is fixedly installed on one end of the limiting rod.

[0011] Preferably, the spring is disposed on the outer wall of the limiting rod, the limiting strip is provided with multiple teeth, and four multi-stage telescopic tubes are fixedly installed on both sides of the fixing ring, with one end of the multi-stage telescopic tubes fixedly installed on the outer wall of the limiting ring.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. This utility model uses the rotation of the limiting strip to engage the teeth of the limiting strip with the threads on the outer wall of the spiral corrugated pipe, thereby improving the tensile strength of the spiral corrugated pipe, preventing the two polyethylene spiral corrugated pipes from breaking apart at the connection point due to thermal expansion and contraction, and increasing the firmness between the spiral corrugated pipes.

[0014] 2. This utility model uses the extension and retraction of a spring to pull the limiting rod towards the connecting rod and to limit and fix one end of the connecting rod, thereby fixing the connecting rod to the limiting ring and preventing the limiting ring from moving towards the fixed ring and releasing the limiting strip. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a polyethylene spiral corrugated pipe connecting component forming device proposed in this utility model;

[0016] Figure 2 This is a partial cross-sectional schematic diagram of a polyethylene spiral corrugated pipe connecting component forming device proposed in this utility model;

[0017] Figure 3 This is a partial enlarged view of area A of the forming device for a polyethylene spiral corrugated pipe connecting component proposed in this utility model.

[0018] In the diagram: 1. Connecting pipe; 2. Spiral corrugated pipe; 3. Fixing ring; 4. Sealing ring; 5. Limiting strip; 6. Multi-stage telescopic pipe; 7. Limiting ring; 8. First fixing seat; 9. Second fixing seat; 10. Connecting rod; 11. Limiting rod; 12. Fixing plate; 13. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-3A polyethylene spiral corrugated pipe connecting component forming device includes a connecting pipe 1, with two spiral corrugated pipes 2 sleeved at both ends of the connecting pipe 1. The outer walls of the two spiral corrugated pipes 2 are each fitted with a sealing ring 4 that is in contact with the outer wall of the connecting pipe 1. The outer wall of the connecting pipe 1 has four circumferentially evenly spaced rotating grooves. Limiting strips 5 are rotatably installed in the four rotating grooves through pins. The outer walls of the four limiting strips 5 are all fitted with limiting rings 7 to limit the limiting strips 5.

[0021] A hollow circular ring structure of fixing ring 3 is fixedly installed on the outer wall of the connecting pipe 1, and multiple first fixing seats 8 are fixedly installed on the fixing ring 3 with equal circumference.

[0022] Four second fixing seats 9 are fixedly installed on the outer wall of the limiting ring 7, which are evenly distributed in a circle. A connecting rod 10 is provided between the first fixing seat 8 and the second fixing seat 9, and the connecting rods 10 connected to the second fixing seats 9 on the two limiting rings 7 are staggered.

[0023] One end of the connecting rod 10 is rotatably connected to the first fixed seat 8 via a pin, and the other end of the connecting rod 10 has a through hole. A limit rod 11 is slidably installed in the through hole. The connecting rod 10 is fixed by sliding the limit rod 11 into the through hole.

[0024] A spring 13 is fixedly installed on the outer wall of the second fixed seat 9. A fixing plate 12 is fixedly installed on the other end of the spring 13. By pulling the fixing plate 12, the fixing plate 12 pulls the limiting rod 11 to move in the direction of the fixing plate 12, thereby releasing the limitation on the connecting rod 10. The fixing plate 12 is fixedly installed on one end of the limiting rod 11.

[0025] Spring 13 is set on the outer wall of limiting rod 11. Through the extension and retraction of spring 13, limiting rod 11 is pulled to slide towards the through hole opened on connecting rod 10, limiting connecting rod 10, so that connecting rod 10, first fixed seat 8 and second fixed seat 9 form a triangle, preventing limiting ring 7 from sliding on limiting strip 5. Limiting strip 5 is provided with multiple teeth, which are set between the external threads on the outer wall of spiral bellows 2, increasing the firmness between spiral bellows 2 and connecting pipe 1. Four multi-stage telescopic tubes 6 are fixedly installed on both sides of the fixing ring 3, which are evenly distributed in a circle, to prevent limiting ring 7 from moving off limiting strip 5, and one end of multi-stage telescopic tube 6 is fixedly installed on the outer wall of limiting ring 7.

[0026] It should be noted that the specific model and specifications of the spiral corrugated pipe 2 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0027] The functional principle of this utility model can be explained through the following operation methods:

[0028] In use, the spiral bellows 2 is sleeved on the outer walls of both ends of the connecting pipe 1, and the sealing ring 4 seals the spiral bellows 2 sleeved on both ends of the connecting pipe 1. By rotating the limiting strip 5, the limiting strip 5 and the external thread of the spiral bellows 2 are brought into contact. The teeth on the limiting strip 5 and the external thread of the spiral bellows 2 are engaged to prevent the spiral bellows 2 from falling off from both ends of the connecting pipe 1.

[0029] The limiting ring 7 moves along the axial direction of the fixed ring 3, thereby limiting the four limiting strips 5 to prevent them from rotating. The other end of the connecting rod 10 is rotated into the second fixed seat 9. The spring 13 pulls the fixing plate 12, causing the limiting rod 11 to move toward the connecting rod 10, thereby limiting and fixing the connecting rod 10 and fixing the limiting ring 7 to the connecting rod 10.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A polyethylene spiral corrugated pipe connecting component forming device, comprising a connecting pipe (1), characterized in that, The connecting pipe (1) is fitted with two spiral corrugated pipes (2) at both ends. The outer walls of the two spiral corrugated pipes (2) are fitted with sealing rings (4) that are in contact with the outer wall of the connecting pipe (1). The outer wall of the connecting pipe (1) is provided with four circumferentially divided rotating grooves. Limiting strips (5) are rotatably installed in the four rotating grooves through pins. The outer walls of the four limiting strips (5) are fitted with limiting rings (7) to limit the limiting strips (5).

2. The polyethylene spiral corrugated pipe connecting component forming device according to claim 1, characterized in that, The outer wall of the connecting pipe (1) is fixedly installed with a fixed ring (3) having a hollow circular structure, and a plurality of first fixed seats (8) are fixedly installed on the fixed ring (3) with equal circumference.

3. The polyethylene spiral corrugated pipe connecting component forming device according to claim 2, characterized in that, The outer wall of the limiting ring (7) is fixedly installed with four second fixing seats (9) arranged in equal circles, and a connecting rod (10) is provided between the first fixing seat (8) and the second fixing seat (9).

4. The polyethylene spiral corrugated pipe connecting component forming device according to claim 3, characterized in that, One end of the connecting rod (10) is rotatably connected to the first fixed seat (8) via a pin, and the other end of the connecting rod (10) has a through hole, in which a limit rod (11) is slidably disposed.

5. The polyethylene spiral corrugated pipe connecting component forming device according to claim 4, characterized in that, A spring (13) is fixedly installed on the outer wall of the second fixed seat (9), and a fixing plate (12) is fixedly installed on the other end of the spring (13), and the fixing plate (12) is fixedly installed on one end of the limiting rod (11).

6. The polyethylene spiral corrugated pipe connecting component forming device according to claim 5, characterized in that, The spring (13) is set on the outer wall of the limiting rod (11), the limiting strip (5) is provided with multiple teeth, and four multi-stage telescopic tubes (6) are fixedly installed on both sides of the fixing ring (3) and the multi-stage telescopic tubes (6) are fixedly installed on the outer wall of the limiting ring (7).

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