Reducing type straight joint

Abstract

The utility model discloses a variable-diameter straight joint, and particularly relates to the technical field of pipe joints, the variable-diameter straight joint comprises a variable-diameter straight joint body, the outer side of the variable-diameter straight joint body is respectively sleeved with a second protection pipe and a first protection pipe, the inner wall of the second protection pipe is correspondingly connected with three first reset springs, and the inner wall of the first protection pipe is correspondingly connected with three second reset springs. One ends of the three first reset springs are connected with clamping plates. Seven second reset springs are annularly connected to the inner wall of the second protection pipe, one ends of the seven second reset springs are connected with movable pipes, and the movable pipes capable of sliding are arranged in the first protection pipe and the second protection pipe, so that the first protection pipe and the second protection pipe can conveniently cover the position of a pipeline connector; and a pair of telescopic clamping plates are arranged in the first protection pipe and the second protection pipe, so that a pipeline is conveniently clamped, and under the rebound effect of the first reset spring and the second reset spring, the shock resistance is improved when the connector is subjected to impact or other external force.

Description

Technical Field

[0001] This utility model relates to the field of pipe fitting technology, specifically to a variable diameter straight-through fitting. Background Technology

[0002] A reducing straight-through pipe fitting is a type of pipe connector typically used to connect pipes of different diameters. Its main function is to connect and convert pipes, enabling the piping system to operate smoothly. In the construction industry, reducing straight-through pipe fittings are often used to connect drainage pipes of different diameters, thereby ensuring the smooth flow of the drainage system. In addition, reducing straight-through pipe fittings can also be used to connect cooling water pipes, ensuring the normal operation of the cooling system.

[0003] Currently, reducing straight pipe fittings are generally used to connect two pipes of different diameters only through threaded connections. However, when the pipes or fittings are subjected to impact or other external forces, the interface may loosen, leading to leakage, and the impact resistance is poor. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A reducing straight-through connector, comprising:

[0006] The reducing straight connector body has a second protective tube and a first protective tube respectively sleeved on its outer side. The second protective tube is located to the left of the first protective tube, and the internal structure of the second protective tube is the same as that of the first protective tube.

[0007] The inner wall of the second protective tube is connected to three first return springs at corresponding positions at the top and bottom, and one end of each of the three first return springs is connected to a clamp.

[0008] The inner wall of the second protective tube is circumferentially connected with seven second return springs at a position away from the first return spring. One end of each of the seven second return springs is connected to a movable tube, which is slidably connected to the body of the variable diameter straight connector.

[0009] In one possible implementation, the inner wall of the moving tube is provided with four circumferential grooves, and a guide rail is slidably connected inside the grooves. The inner side of the guide rail is fixedly connected to the body of the reducing straight connector, and a pair of retaining rings are correspondingly connected to the outer side of the reducing straight connector body. One side of the retaining ring is fixedly connected to the guide rail.

[0010] In one possible implementation, the interior of the second protective tube is connected from the outside to the inside with a first impact-resistant layer, a second impact-resistant layer, and a base tube, respectively.

[0011] In one possible implementation, the first impact-resistant layer is made of nylon.

[0012] In one possible implementation, the second impact-resistant layer is made of high-manganese steel.

[0013] In one possible implementation, the inner wall of the clamp is connected to a rubber gasket.

[0014] In one possible implementation, the rubber gasket is provided in an arc shape, and the inner diameter of the rubber gasket is consistent with the inner diameter of the reducing straight connector body.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] By installing a first protective tube and a second protective tube on the outside of the reducing straight connector body, and by setting a slidable movable tube inside the first and second protective tubes, the first and second protective tubes can slide on the outside of the reducing straight connector body. This further facilitates pushing the first and second protective tubes to both sides to cover the pipe interface. A pair of retractable clamps are also installed inside the first and second protective tubes to clamp the pipe and prevent the first and second protective tubes from sliding freely. Under the rebound effect of the first and second return springs, the connector can play a buffering role when subjected to impact or other external forces, thus improving its impact resistance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is one of the schematic diagrams of the overall internal structure of the second protective tube of this utility model;

[0021] Figure 4 This is the second schematic diagram of the overall internal structure of the second protective tube of this utility model;

[0022] Figure 5 This is a cross-sectional view of the internal structure of the second protective tube of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First protective pipe; 2. Second protective pipe; 201. First impact-resistant layer; 202. Second impact-resistant layer; 203. Base pipe; 3. Reducer straight connector body; 4. Clamping plate; 5. Retaining ring; 6. Guide rail; 7. First return spring; 8. Moving pipe; 9. Slide groove; 10. Second return spring; 11. Rubber gasket. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This application provides a variable diameter straight-through connector to solve the problems in the prior art.

[0027] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0028] like Figures 1-5 As shown, a reducing straight-through connector includes:

[0029] The reducing straight connector body 3 is fitted with a second protective tube 2 and a first protective tube 1 on its outer side. The second protective tube 2 is located to the left of the first protective tube 1, and the internal structure of the second protective tube 2 is the same as that of the first protective tube 1.

[0030] Three first return springs 7 are connected to the upper and lower positions of the inner wall of the second protective pipe 2. One end of the three first return springs 7 is connected to a clamping plate 4. By setting a pair of clamping plates 4, the pipe can be clamped and the first protective pipe 1 and the second protective pipe 2 can be prevented from sliding freely.

[0031] The inner wall of the second protective tube 2 is circumferentially connected with seven second return springs 10 at a position away from the first return spring 7. One end of each of the seven second return springs 10 is connected to a movable tube 8, which is slidably connected to the body 3 of the variable diameter straight connector. By utilizing the rebound effect of the first return spring 7 and the second return spring 10, the connector can play a buffering role when subjected to impact or other external forces, thus improving its impact resistance.

[0032] In some examples, the inner wall of the movable pipe 8 is provided with four circumferential grooves 9. The inside of the grooves 9 is slidably connected to guide rails 6. The inner side of the guide rails 6 is fixedly connected to the body 3 of the reducing straight connector. The outer side of the reducing straight connector body 3 is correspondingly connected to a pair of retaining rings 5. One side of the retaining rings 5 ​​is fixedly connected to the guide rails 6. Through the connection between the grooves 9 and the guide rails 6, it is convenient for the first protective pipe 1 and the second protective pipe 2 to slide on the outside of the reducing straight connector body 3. It is also convenient to push the first protective pipe 1 and the second protective pipe 2 to both sides respectively to cover the position of the pipe interface.

[0033] In some examples, the interior of the second protective tube 2 is connected from the outside to the inside with a first impact-resistant layer 201, a second impact-resistant layer 202, and a base tube 203, respectively.

[0034] In some examples, the first impact-resistant layer 201 is made of nylon material, which has the advantages of high strength, self-lubrication, and wear resistance. It can effectively prevent external forces from scratching the first protective tube 1 and the second protective tube 2, and is conducive to improving the impact resistance of the first protective tube 1 and the second protective tube 2.

[0035] In some examples, the second impact-resistant layer 202 is made of high-manganese steel, which has the advantages of high hardness and wear resistance, further improving the impact resistance of the first protective tube 1 and the second protective tube 2.

[0036] In some examples, the inner wall of the clamp 4 is connected with a rubber gasket 11. By setting the rubber gasket 11, it can better contact the pipe surface, increase friction, prevent the clamp 4 from sliding on the pipe surface, and improve the connection stability.

[0037] In some examples, the rubber gasket 11 is provided in an arc shape, and the inner diameter of the rubber gasket 11 is consistent with the inner diameter of the reducer body 3. This facilitates a tight fit between the inner wall of the rubber gasket 11 and the pipe threadedly connected to the inner diameter of the reducer body 3, further increasing the connection stability between the gasket and the pipe.

[0038] This invention features a first protective tube 1 and a second protective tube 2 fitted onto the outer side of the reducing straight connector body 3. A slidable movable tube 8 is installed inside each of the first and second protective tubes 1 and 2, facilitating their sliding on the outside of the reducing straight connector body 3. This further facilitates pushing the first and second protective tubes 1 and 2 to both sides to cover the pipe interface. A pair of retractable clamps 4 are also installed inside each of the first and second protective tubes 1 and 2 to clamp the pipe and prevent them from sliding freely. The rebound effect of the first return spring 7 and the second return spring 10 helps to buffer the connector when subjected to impact or other external forces, improving its impact resistance.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reducing straight-through connector, characterized in that, include: The variable diameter straight connector body (3) is provided with a second protective tube (2) and a first protective tube (1) respectively on the outside of the variable diameter straight connector body (3). The second protective tube (2) is located on the left side of the first protective tube (1). The internal structure of the second protective tube (2) is the same as the internal structure of the first protective tube (1). The inner wall of the second protective tube (2) is connected with three first return springs (7) at the upper and lower positions respectively, and one end of the three first return springs (7) is connected with a clamp (4); The inner wall of the second protective tube (2) is circumferentially connected with seven second return springs (10) at a position away from the first return spring (7). One end of each of the seven second return springs (10) is connected to a moving tube (8), which is slidably connected to the body (3) of the variable diameter straight connector.

2. A reducing straight-through connector according to claim 1, characterized in that: The inner wall of the moving tube (8) is provided with four circumferential grooves (9). A guide rail (6) is slidably connected inside the groove (9). The inner side of the guide rail (6) is fixedly connected to the body (3) of the variable diameter straight connector. A pair of retaining rings (5) are correspondingly connected to the outer side of the body (3) of the variable diameter straight connector. One side of the retaining ring (5) is fixedly connected to the guide rail (6).

3. A reducing straight-through connector according to claim 1, characterized in that: The second protective tube (2) has a first impact-resistant layer (201), a second impact-resistant layer (202) and a base tube (203) connected from the outside to the inside.

4. A reducing straight-through connector according to claim 3, characterized in that: The first impact-resistant layer (201) is made of nylon.

5. A reducing straight-through connector according to claim 3, characterized in that: The second impact-resistant layer (202) is made of high manganese steel.

6. A reducing straight-through connector according to claim 1, characterized in that: The inner wall of the clamp (4) is connected to a rubber pad (11).

7. A reducing straight-through connector according to claim 6, characterized in that: The rubber gasket (11) is provided in an arc shape, and the inner diameter of the rubber gasket (11) is consistent with the inner diameter of the reducing straight connector body (3).

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