Ultra-high molecular weight polyethylene composite pipe connecting piece

Abstract

The utility model discloses an ultra-high molecular weight polyethylene composite pipe connecting piece, which relates to the technical field of pipeline connectors and comprises a connecting sleeve, annular grooves are arranged at two ends of the connecting sleeve, a first conical surface is arranged on one side of the inner wall of each annular groove, and a second conical surface matched with the first conical surface is arranged on the inner wall of the connecting end of a composite pipe. The connecting end of the composite pipe is inserted into the annular groove, and the second conical surface of the composite pipe is matched with the first conical surface of the annular groove; the device further comprises a connecting plate and a plurality of bolts, four axial fasteners are rotationally installed on the outer wall of the connecting sleeve in a circumferential array mode, each fastener is a cylinder, and threaded holes matched with the bolts are formed in the two ends of each fastener. The connecting plate is fixed to the outer wall of the connecting end of the composite pipe, and four through holes in one-to-one correspondence with the fasteners are formed in the connecting plate. The device is simple in structure and easy and convenient to operate, the composite pipes on the two sides can move in the opposite directions by rotating the fastener, locking is achieved in cooperation with the connecting sleeve, and therefore connection of the two composite pipes is rapidly completed.

Description

Technical Field

[0001] This utility model relates to the field of pipe connector technology, specifically to an ultra-high molecular weight polyethylene composite pipe connector. Background Technology

[0002] Ultra-high molecular weight polyethylene composite pipe is composed of two types of pipes: steel pipe and ultra-high molecular weight polyethylene pipe. The steel pipe acts as the outer protective pipe, protecting the inner pipe and withstanding high pressure, while the inner lining pipe is made of ultra-high molecular weight polyethylene pipe, which is wear-resistant and corrosion-resistant.

[0003] In the existing technology, if the connection of existing composite pipes is carried out by heating and welding, special equipment is required, which makes the construction difficult. When connecting by flange, multiple bolts need to be installed repeatedly, which slows down the connection speed and affects the laying efficiency of the pipeline. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a high molecular weight polyethylene composite pipe connector.

[0005] The technical solution of this utility model is: a high molecular weight polyethylene composite pipe connector, including a connecting sleeve, both ends of which are provided with annular grooves, one side of the inner wall of the annular groove is provided with a first conical surface, the inner wall of the composite pipe connecting end is provided with a second conical surface adapted to the first conical surface, the composite pipe connecting end is inserted into the annular groove, and its second conical surface is engaged with the conical surface of the first conical surface of the annular groove.

[0006] It also includes a connecting plate and multiple bolts. Multiple axial fasteners are rotatably mounted in a circumferential array on the outer wall of the connecting sleeve. The fasteners are cylindrical bodies with threaded holes at both ends that are compatible with the bolts. The connecting plate is fixed to the outer wall of the composite pipe connection end, and the connecting plate has multiple through holes that correspond one-to-one with the fasteners. The bolts pass through the through holes and are threadedly connected to the threaded holes at one end of the fasteners. When locked, rotating the fasteners causes the bolts on both sides of the fasteners to move towards each other.

[0007] Preferably, a rubber sealing ring is fitted onto the first conical surface.

[0008] Preferably, two side-by-side fixing plates are fixed to the middle of the outer wall of the connecting sleeve, and the fastener passes through the two fixing plates and is rotatably connected to the two fixing plates.

[0009] Preferably, the fastener has a plurality of operating holes in the middle for rotating the fastener.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] This device has a simple structure and is easy to operate. By rotating the fastener, the composite tubes on both sides can be moved towards each other and locked together with the connecting sleeve, thus quickly completing the connection of the two composite tubes. The connecting sleeve and the composite tube are sealed with a conical surface. By rotating the fastener to apply pressure, the first and second conical surfaces are more tightly fitted together and form an effective seal. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 for Figure 1 A cross-sectional view;

[0014] Figure 3 A three-dimensional view of the connecting sleeve;

[0015] Figure 4 This is a 3D view of the composite pipe.

[0016] In the figure: 1. Connecting sleeve, 2. Annular groove, 3. First conical surface, 4. Composite tube, 5. Second conical surface, 6. Fastener, 601. Threaded hole, 602. Operating hole, 7. Connecting plate, 701. Through hole, 8. Bolt, 9. Rubber sealing ring, 10. Fixing plate, 11. Limiting ring. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0018] Reference Figure 1-4 As shown, a UHMWPE composite pipe connector includes a connecting sleeve 1. Both ends of the connecting sleeve 1 are provided with annular grooves 2. A first conical surface 3 is provided on one side of the inner wall of the annular groove 2. A second conical surface 5 adapted to the first conical surface 3 is provided on the inner wall of the connecting end of the composite pipe 4. The connecting end of the composite pipe 4 is inserted into the annular groove 2, and its second conical surface 5 is engaged with the conical surface of the first conical surface 3 of the annular groove 2.

[0019] It also includes a connecting plate 7 and multiple bolts 8. Four axial fasteners 6 are rotatably mounted in a circumferential array on the outer wall of the connecting sleeve 1. The fasteners 6 are cylindrical bodies with threaded holes 601 at both ends that are adapted to the bolts 8. The connecting plate 7 is fixed on the outer wall of the connecting end of the composite pipe 4, and the connecting plate 7 has four through holes 701 that correspond one-to-one with the fasteners 6. The bolts 8 pass through the through holes 701 and are threadedly connected to the threaded holes 601 at one end of the fasteners 6. When locked, the fasteners 6 are rotated, and the bolts 8 on both sides of the fasteners 6 move towards each other.

[0020] More specifically, to improve the sealing effect, a rubber sealing ring 9 is fitted on the first conical surface 3.

[0021] In use, insert the connecting ends of the two composite tubes 4 into the annular grooves 2 on both sides of the connecting sleeve 1, so that the second conical surface 5 of the two tubes contacts the corresponding first conical surface 3; then install the bolts 8, which pass through the through hole 701 and are threadedly connected to the threaded hole 601 at one end of the fastener 6; finally, tighten: rotate the fastener 6 so that the bolts 8 on both sides move towards each other, thereby driving the composite tubes 4 on both sides of the connecting sleeve 1 to move towards each other, thus completing the tightening.

[0022] This device has a simple structure and is easy to operate. By rotating the fastener 6, the two composite tubes 4 on both sides can move towards each other and lock together with the connecting sleeve 1, thereby quickly completing the connection of the two composite tubes 4. The connecting sleeve 1 and the composite tube 4 are sealed with a conical surface. By rotating the fastener 6, pressure is applied to make the first conical surface 3 and the second conical surface 5 fit together more tightly and form an effective seal. Example 2

[0023] As a preferred embodiment of this utility model, this embodiment optimizes the structure of the connecting sleeve 1 based on Embodiment 1, specifically as follows:

[0024] Reference Figure 3 As shown, in this embodiment, two side-by-side fixing plates 10 are fixed in the middle of the outer wall of the connecting sleeve 1, and the fastener 6 passes through the two fixing plates 10 and is rotatably connected to the two fixing plates 10.

[0025] To prevent the fastener 6 from moving axially, two limiting rings 11 are provided on the outer wall of the fastener 6, which respectively contact the outer sides of the two fixing plates 10.

[0026] In addition, the fastener 6 has multiple operating holes 602 in the middle for rotating the fastener 6. When locking, the fastener 6 can be rotated through the operating holes 602, further improving the convenience of operation.

[0027] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. An ultra-high molecular weight polyethylene composite pipe coupling comprising a coupling sleeve, characterised in that: The connecting sleeve is provided with annular grooves at both ends, and the inner wall of the annular grooves is provided with a first conical surface on one side, and the inner wall of the connecting end of the composite pipe is provided with a second conical surface matched with the first conical surface, and the connecting end of the composite pipe is inserted into the annular groove, and the second conical surface is matched with the first conical surface of the annular groove; Further comprising a connecting plate and a plurality of bolts, a plurality of axial fasteners are circumferentially arranged and rotatably installed on the outer wall of the connecting sleeve, the fastener is a cylindrical body, and a threaded hole matched with the bolt is formed at both ends of the fastener; the connecting plate is fixed on the outer wall of the connecting end of the composite pipe, and a plurality of through holes corresponding to the fasteners are formed on the connecting plate; the bolt passes through the through hole and is threadedly connected with the threaded hole at one end of the fastener; when locked, the fastener is rotated, and the bolts on both sides of the fastener move towards each other.

2. An ultra-high molecular weight polyethylene composite pipe coupling according to claim 1, characterized in that: A rubber sealing ring is sleeved on the first conical surface.

3. The ultra-high molecular weight polyethylene composite pipe coupling of claim 1, wherein: Two left and right fixed plates are fixed on the middle part of the outer wall of the connecting sleeve, the fastener penetrates through the two fixed plates, and is rotatably connected with the two fixed plates.

4. An ultra-high molecular weight polyethylene composite pipe coupling according to claim 3, characterized in that: A plurality of operation holes for rotating the fastener are formed in the middle part of the fastener.

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