Connecting device of composite pipe

Abstract

The utility model provides a connecting device of a composite pipe. The connecting device of the composite pipes comprises two composite pipe outer pipes, composite pipe inner pipes are fixedly installed on the inner walls of the composite pipe outer pipes, and connecting mechanisms are arranged on the composite pipe outer pipes; the connecting mechanism comprises two fixing rings, the fixing rings are fixedly arranged on the outer pipe of the composite pipe in a sleeving mode, a sealing ring is fixedly installed on one side of each fixing ring and located on the outer circle of the inner pipe of the composite pipe, and a first chamfer edge is arranged on each fixing ring. The connecting device of the composite pipe is provided with the connecting mechanism, so that when the two arc-shaped clamping blocks fasten the outer pipe of the composite pipe, the second chamfered edges in the arc-shaped clamping blocks can abut against the first chamfered edges under the action of pressure, then the first chamfered edges are pushed, and then the two fixing rings are pushed to oppositely move towards the interior of the movable groove; the end openings of the outer pipes of the two composite pipes are mutually extruded and butted, the effective sealing effect is achieved, and the device has the advantages of being simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite pipes, and particularly relates to a connecting device for composite pipes. Background Art

[0002] Steel-plastic composite pipes are currently used more and more widely and are relatively important in the field of liquid transportation. A steel-plastic composite pipe is a pipe with a double-layer structure inside and outside. The inner layer structure has an anti-corrosion effect, and the outer layer structure has a supporting and protective function. It has a long service life and good stability.

[0003] When connecting steel-plastic composite pipes, a clamp connection is used. The clamp connection squeezes a sealing ring through a clamp, and then makes the inner side of the sealing ring fit with the outer wall of the pipe fitting to achieve a sealing effect. However, the extrusion of the clamp on the sealing ring is not uniform enough, so that some positions of the sealing ring do not fit tightly on the pipe wall, resulting in poor airtightness.

[0004] Therefore, it is necessary to provide a new connecting device for composite pipes to solve the above technical problems. Content of the Utility Model

[0005] The technical problem solved by the utility model is to provide a connecting device for composite pipes that can effectively seal the butt joint ports of composite pipes.

[0006] To solve the above technical problem, the connecting device for composite pipes provided by the utility model includes: two outer composite pipe tubes, an inner composite pipe tube is fixedly installed on the inner wall of the outer composite pipe tube, and a connecting mechanism is arranged on the outer composite pipe tube;

[0007] The connecting mechanism includes two fixing rings, the fixing rings are fixedly sleeved on the outer composite pipe tubes, a sealing ring is fixedly installed on one side of the fixing rings, the sealing ring is located on the outer circle of the inner composite pipe tube, a first chamfered edge is opened on the fixing rings, two arc-shaped clamping blocks are sleeved on the outer composite pipe tubes, an activity groove is opened on the inner side of the arc-shaped clamping blocks, the activity groove is adapted to the fixing rings, and second chamfered edges are opened on both sides of the activity groove, and the second chamfered edges are tangent to the first chamfered edges.

[0008] As a further scheme of the utility model, four fixing blocks are fixedly installed on the arc-shaped clamping blocks, the four fixing blocks are distributed in a rectangular array along the outer side of the arc-shaped clamping blocks, and mounting holes are opened on the fixing blocks.

[0009] As a further scheme of the utility model, a locking bolt is arranged between two of the fixing blocks, an adjusting screw block is fixedly installed at one end of the locking bolt, a first circular gasket is arranged on the corresponding fixing block, a locking screw block is arranged below the corresponding fixing block, a second circular gasket is arranged above the locking screw block, and the locking bolt passes through the mounting hole and is slidably connected with the mounting hole.

[0010] As a further solution of the present utility model, a threaded hole is provided on the locking screw block, and the locking bolt is adapted to the threaded hole.

[0011] As a further solution of the present utility model, round holes are provided on both the first round gasket and the second round gasket, and one end of the locking bolt penetrates through the round holes and is slidably connected to the round holes.

[0012] As a further solution of the present utility model, two anti-slip rubber pads are fixedly installed inside the arc-shaped clamping block, and the outer side of the fixed ring abuts against the anti-slip rubber pads.

[0013] Compared with the related art, the connection device of the composite pipe provided by the present utility model has the following beneficial effects:

[0014] By providing a connection mechanism, when the two arc-shaped clamping blocks clamp the outer pipe of the composite pipe, the chamfer edge two inside the arc-shaped clamping block will abut against the chamfer edge one under the action of pressure, then push the chamfer edge one, and then push the two fixed rings to move towards each other inside the movable groove, so that the ports of the two outer pipes of the composite pipe are mutually extruded and butted, achieving an effective sealing effect, with a simple structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the connection device of the composite pipe provided by the present utility model;

[0017] Figure 2 is an exploded structural schematic diagram of the connection device of the composite pipe provided by the present utility model;

[0018] Figure 3 is a cross-sectional structural schematic diagram of the outer pipe of the composite pipe and the arc-shaped clamping block of the connection device of the composite pipe provided by the present utility model.

[0019] In the figure: 1. Outer pipe of the composite pipe; 101. Inner pipe of the composite pipe; 102. Fixed ring; 103. Sealing ring; 104. Chamfer edge one; 2. Arc-shaped clamping block; 201. Movable groove; 202. Chamfer edge two; 3. Fixed block; 301. Installation hole; 4. Locking bolt; 401. Adjusting screw block; 402. First round gasket; 403. Locking screw block; 404. Second round gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 , wherein Figure 1 is a three-dimensional structural schematic diagram of the connection device of the composite pipe of the present utility model;Figure 2 Explosion structure schematic diagram of the connection device for the composite pipe provided by the present utility model; Figure 3 Cross-sectional structure schematic diagram of the outer composite pipe and the arc-shaped clamping block of the connection device for the composite pipe provided by the present utility model. The connection device for the composite pipe includes: two outer composite pipes 1, a composite pipe inner pipe 101 is fixedly installed on the inner wall of the outer composite pipe 1, and a connection mechanism is provided on the outer composite pipe 1;

[0021] The connection mechanism includes two fixing rings 102, the fixing rings 102 are fixedly sleeved on the outer composite pipe 1, a sealing ring 103 is fixedly installed on one side of the fixing ring 102, the sealing ring 103 is located on the outer circle of the composite pipe inner pipe 101, a first chamfer edge 104 is opened on the fixing ring 102, two arc-shaped clamping blocks 2 are sleeved on the outer composite pipe 1, a movable groove 201 is opened on the inner side of the arc-shaped clamping block 2, the movable groove 201 is adapted to the fixing ring 102, and second chamfer edges 202 are opened on both sides of the movable groove 201, and the second chamfer edges 202 are tangent to the first chamfer edge 104.

[0022] As Figure 1 and Figure 2 shown, four fixing blocks 3 are fixedly installed on the arc-shaped clamping block 2, and the four fixing blocks 3 are distributed in a rectangular array along the outer side of the arc-shaped clamping block 2, and mounting holes 301 are opened on the fixing blocks 3;

[0023] By providing four fixing blocks 3, it is convenient to connect the upper and lower arc-shaped clamping blocks 2 together.

[0024] As Figure 1 and Figure 2 shown, a locking bolt 4 is arranged between the two fixing blocks 3, a regulating screw block 401 is fixedly installed at one end of the locking bolt 4, a first circular gasket 402 is arranged on the corresponding fixing block 3, a locking screw block 403 is arranged below the corresponding fixing block 3, a second circular gasket 404 is arranged above the locking screw block 403, and the locking bolt 4 passes through the mounting hole 301 and is slidably connected with the mounting hole 301;

[0025] By inserting the locking bolt 4 into the two mounting holes 301 and then connecting one end of the locking bolt 4 by the locking screw block 403, the two fixing blocks 3 can be fixedly connected, so that the two arc-shaped clamping blocks 2 are fixedly installed together.

[0026] As Figure 2 shown, a threaded hole is opened on the locking screw block 403, and the locking bolt 4 is adapted to the threaded hole;

[0027] By making the threaded hole opened on the locking screw block 403 adapted to the thread on the surface of the locking bolt 4, it is convenient to rotate the locking screw block 403 on the locking bolt 4 by screwing.

[0028] As Figure 2 shown, round gaskets I (402) and round gaskets II (404) are both provided with round holes, and one end of the locking bolt (4) penetrates through the round holes and is slidably connected to the round holes;

[0029] By providing round gaskets I (402) and round gaskets II (404), the contact area with the fixed block (3) can be increased, preventing the connection between the locking bolt (4) and the locking nut (403) from loosening.

[0030] As Figure 2 shown, two anti-slip rubber pads are fixedly installed inside the arc-shaped clamping block (2), and the outer side of the fixing ring (102) abuts against the anti-slip rubber pads;

[0031] By providing anti-slip rubber pads, the friction between the fixing ring (102) and the inner wall of the arc-shaped clamping block (2) can be increased, thereby protecting the inner pipe (101) of the composite pipe to remain stable and preventing the inner pipe (101) of the composite pipe from rotating and affecting the loosening of the docking port.

[0032] The working principle of the connection device for the composite pipe provided by the present utility model is as follows:

[0033] During use, a fixing ring (102) is fixedly sleeved outside the outer pipe (1) of the composite pipe, and then a sealing ring (103) is installed at the docking end of the outer pipe (1) of the composite pipe. Then, the ports of the two outer pipes (1) of the composite pipe are brought close together. After that, the two arc-shaped clamping blocks (2) clamp the two outer pipes (1) of the composite pipe. Then, the locking bolt (4) is inserted between the two mounting holes (301), thereby connecting the two fixed blocks (3) together. Then, the locking nut (403) is screwed tightly at one end of the locking bolt (4). Therefore, the two arc-shaped clamping blocks (2) can move towards each other. The pressure generated when the two arc-shaped clamping blocks (2) move towards each other can be converted into a thrust by the chamfer edge II (202) abutting against the chamfer edge I (104). Then, it pushes the two fixing rings (102) to move towards each other. The fixing rings (102) drive the ports and the sealing ring (103) between the two outer pipes (1) of the composite pipe to be mutually extruded and sealed, playing an effective sealing role.

[0034] It should be noted that the device structure and drawings of the present utility model mainly describe the principle of the present utility model. In terms of the technical principle of this design, the settings of the power mechanism, power supply system, control system, etc. of the device are not fully described clearly. However, on the premise that those skilled in the art understand the principle of the above-mentioned utility model, the specific details of its power mechanism, power supply system, and control system can be clearly known. The control method of the application document is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art;

[0035] All the standard parts used can be purchased from the market, and can also be customized according to the description in the specification and the attached drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the 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.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, or directly or indirectly applied. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and is similarly included within the scope of the patent protection of the present invention.

Claims

1. A composite pipe connection device, characterized in that: include: Two composite pipe outer pipes, a composite pipe inner pipe is fixedly mounted on the inner wall of the composite pipe outer pipe, and a connecting mechanism is arranged on the composite pipe outer pipe; The connecting mechanism includes two fixing rings, the fixing rings are fixedly sleeved on the outer tube of the composite tube, a sealing ring is fixedly installed on one side of the fixing ring, the sealing ring is located on the outer ring of the inner tube of the composite tube, a chamfered edge 1 is provided on the fixing ring, two arc-shaped clamping blocks are sleeved on the outer tube of the composite tube, a movable groove is provided on the inner side of the arc-shaped clamping blocks, the movable groove is adapted to the fixing ring, chamfered edges 2 are provided on both sides of the movable groove, and the chamfered edge 2 is in contact with the chamfered edge 1.

2. The composite pipe connecting device according to claim 1, characterized in that: Four fixing blocks are fixedly mounted on the arc-shaped clamping block. The four fixing blocks are distributed in a rectangular array along the outer side of the arc-shaped clamping block. The fixing blocks are provided with mounting holes.

3. The composite pipe connection device according to claim 2, characterized in that: A locking bolt is arranged between the two fixed blocks, an adjusting screw block is fixedly installed on one end of the locking bolt, a circular gasket 1 is arranged on the corresponding fixed block, a locking screw block is arranged under the corresponding fixed block, a circular gasket 2 is arranged above the locking screw block, and the locking bolt passes through the mounting hole and is slidably connected to the mounting hole.

4. The composite pipe connection device according to claim 3, characterized in that: The locking screw block is provided with a threaded hole, and the locking bolt is matched with the threaded hole.

5. The composite pipe connection device according to claim 3, characterized in that: The circular gasket 1 and the circular gasket 2 are both provided with circular holes, and one end of the locking bolt passes through the circular hole and is slidably connected in the circular hole.

6. The composite pipe connection device according to claim 1, characterized in that: Two anti-skid rubber pads are fixedly installed in the arc-shaped clamping block, and the outer side of the fixing ring abuts against the anti-skid rubber pads.

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