Mining primary-secondary type pipe joint

Abstract

The utility model discloses a mining child-mother type pipe joint which comprises a first pipe fitting and a second pipe fitting, one end of the first pipe fitting is fixedly connected with a male joint, one end of the second pipe fitting is fixedly connected with a female joint, the outer side of the female joint is fixedly sleeved with an inner pipe, the outer side of the inner pipe is provided with an outer pipe, and the outer pipe is fixedly connected with the male joint. A plurality of fixing pieces are fixedly connected between the inner pipe and the outer pipe, a plurality of supporting blocks are fixedly connected to the outer side wall of the female connector, grooves are formed in the supporting blocks, traction plates are arranged in the grooves, and the traction plates are rotationally connected with the inner walls of the grooves through torsional spring rotating shafts. According to the utility model, the male joint and the female joint are convenient to assemble and fix by adopting clamping and fixing, the on-site operation is simple, and the connecting device is suitable for popularization and application.

Description

A type of female-female pipe joint for mining Technical Field

[0001] This utility model relates to the field of mining pipe fittings and related products, specifically a mining female-female pipe joint. Background Technology

[0002] Pipe fittings are parts used to connect pipes or mount pipes onto components. They are a general term for detachable connectors in fluid passages. Corrugated pipes are a type of mining pipe, which is used in coal mines. Mining pipes include coal mine water supply and drainage pipes, coal mine gas drainage pipes, coal mine underground spraying pipes, coal mine ventilation pipes, coalbed methane pipelines, and coal mine connecting hoses, etc.

[0003] However, existing corrugated pipe joints require tightening multiple sets of bolts during connection, which greatly reduces the efficiency of workers and increases the cost of pipe installation, thus failing to meet people's needs. Summary of the Invention

[0004] The purpose of this utility model is to provide a mining-grade female-female pipe joint to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mining-grade female-female pipe joint, comprising a first pipe fitting and a second pipe fitting. A male connector is fixedly connected to one end of the first pipe fitting, and a female connector is fixedly connected to one end of the second pipe fitting. An inner pipe is fixedly sleeved on the outer side of the female connector, and an outer pipe is provided on the outer side of the inner pipe. Multiple fixing plates are fixedly connected between the inner and outer pipes. Multiple support blocks are fixedly connected to the outer wall of the female connector. Each support block has a groove, and a traction plate is provided within the groove. The traction plate and the groove... The walls are rotatably connected by a torsion spring shaft. One end of the traction plate is fixedly connected to a swing plate, and one end of the swing plate is fixedly connected to a locking plate. Multiple positioning blocks corresponding to the positions of the support blocks are fixedly connected to the outer wall of the male connector. Each of the positioning blocks has a slot corresponding to the locking plate. The outer tube has a communicating slot at the position of the receiving cavity. A pressure plate is provided in the slot. A connecting rod is fixedly connected to the bottom of the pressure plate. A pressure block is fixedly connected to one end of the connecting rod. Elastic elements are fixedly connected to both ends of the pressure block and the inner wall of the outer tube.

[0006] Preferably, the male connector and the female connector have corresponding structures, and the diameter of the male connector is smaller than the diameter of the female connector.

[0007] Preferably, the elastic element is a spring.

[0008] Preferably, a receiving cavity is formed between the plurality of fixing plates, and one end of the traction plate extends into the receiving cavity.

[0009] Preferably, a rubber ring is fixedly connected inside the female connector, and the inner wall of one end of the rubber ring is inclined.

[0010] Preferably, the number of the plurality of support blocks is not less than four, and the adjacent support blocks are equidistant from each other.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This mining-grade female-female pipe joint works by holding the outer pipe and pressing the pressure plate on it, causing the connecting rod to push the pressure block. The pressure block then presses against the traction plate, causing it to swing within the support block. Simultaneously, a torsion spring generates a torsional force, and the swinging plate causes the locking plate to open. The male connector is then inserted into the female connector. After insertion, the pressure plate is released, and the elastic element between the pressure block and the outer pipe automatically returns to its initial position under its own rebound force. At the same time, the torsion spring, under torsion, causes the traction plate to flip on the support block, and the swinging plate swings along with it, causing the locking plate to engage in the slot on the positioning block, thus securing the male connector. This utility model uses a snap-fit ​​fixing method, which facilitates the assembly and fixing of male and female connectors. It is simple to operate on-site and suitable for widespread use. Attached Figure Description

[0013] Figure 1 is a structural schematic diagram of a mining-grade female-female pipe joint according to this utility model;

[0014] Figure 2 is an enlarged view of point A of a mining-grade female-female pipe joint according to this utility model;

[0015] Figure 3 is a schematic diagram of the connection between the inner and outer pipes of a mining-grade female-female pipe joint according to this utility model.

[0016] In the diagram: 1. First fitting; 2. Second fitting; 3. Male connector; 4. Female connector; 5. Inner pipe; 6. Outer pipe; 7. Fixing plate; 8. Support block; 9. Traction plate; 10. Torsion spring shaft; 11. Swing plate; 12. Clamping plate; 13. Positioning block; 14. Pressure plate; 15. Connecting rod; 16. Pressure block; 17. Elastic element; 18. Receiving cavity; 19. Rubber ring. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please refer to Figures 1-3. One embodiment of this utility model provides a mining-grade female-female pipe joint, comprising a first pipe fitting 1 and a second pipe fitting 2. A male connector 3 is fixedly connected to one end of the first pipe fitting 1, and a female connector 4 is fixedly connected to one end of the second pipe fitting 2. An inner pipe 5 is fixedly sleeved on the outer side of the female connector 4, and an outer pipe 6 is provided on the outer side of the inner pipe 5. Multiple fixing plates 7 are fixedly connected between the inner pipe 5 and the outer pipe 6. Multiple support blocks 8 are fixedly connected to the outer wall of the female connector 4. Each support block 8 has a groove, and a traction plate 9 is provided within the groove. The traction plate 9 is rotatably connected to the inner wall of the groove via a torsion spring shaft 10. A swing plate 11 is fixedly connected to one end of the traction plate 9, and a locking plate 12 is fixedly connected to one end of the swing plate 11. Multiple positioning blocks 13, corresponding to the positions of the support blocks 8, are fixedly connected to the outer wall of the male connector 3. Each positioning block 13 has a locking groove corresponding to the locking plate 12. The outer pipe 6 is located in the receiving cavity 1. A through slot is provided at position 8, and a pressure plate 14 is provided in the slot. A connecting rod 15 is fixedly connected to the bottom of the pressure plate 14, and a pressure block 16 is fixedly connected to one end of the connecting rod 15. Both ends of the pressure block 16 are fixedly connected to the inner wall of the outer tube 6 with elastic elements 17. Specifically, pressing the pressure plate 14 on the outer tube 6 causes the connecting rod 15 to push the pressure block 16. At this time, the pressure block 16 will press against the traction plate 9 and make it swing in the support block 8. At the same time, the torsion spring generates torsional force, and the swing plate 11 drives the clamping plate 12 to open. Then, the male connector 3 is inserted into the female connector 4. After insertion, the pressure plate 14 is released. At this time, the elastic element 17 between the pressure block 16 and the outer tube 6 automatically returns to the initial position under its own rebound force. At the same time, the torsion spring under torsion causes the traction plate 9 to flip on the support block 8. The swing plate 11 swings along with it, causing the clamping plate 12 to be locked in the slot on the positioning block 13 to realize the insertion and fixation of the male connector 3.

[0021] In this embodiment, the male connector 3 and the female connector 4 have corresponding structures. The diameter of the male connector 3 is smaller than that of the female connector 4, which facilitates the insertion and connection. The elastic element 17 is a spring with high availability. A receiving cavity 18 is formed between multiple fixing plates 7. One end of the traction plate 9 extends into the receiving cavity 18 and is accommodated by the traction plate 9. A rubber ring 19 is fixedly connected inside the female connector 4. The inner wall of one end of the rubber ring 19 is inclined. After the male connector 3 is inserted, the elastic memory of the rubber ring 19 is used to squeeze the male connector 3, which improves the stability during docking. The number of multiple support blocks 8 is not less than four, and the adjacent support blocks 8 are equidistantly arranged.

[0022] Working principle: During assembly, pressing the pressure plate 14 on the outer tube 6 causes the connecting rod 15 to push the pressure block 16. The pressure block 16 then presses against the traction plate 9, causing it to swing within the support block 8. At the same time, the torsion spring generates a torsional force, and the swing plate 11 drives the clamping plate 12 to open. Then, the male connector 3 is inserted into the female connector 4. After insertion, the pressure plate 14 is released. At this time, the elastic element 17 between the pressure block 16 and the outer tube 6 automatically returns to its initial position under its own rebound force. At the same time, the torsion spring, which is under torsion, causes the traction plate 9 to flip on the support block 8. The swing plate 11 swings along with the torsion, causing the clamping plate 12 to be locked in the slot on the positioning block 13 to achieve the insertion and fixation of the male connector 3.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mining-grade female-female pipe fitting, comprising a first fitting (1) and a second fitting (2), characterized in that: One end of the first pipe fitting (1) is fixedly connected to a male connector (3), and one end of the second pipe fitting (2) is fixedly connected to a female connector (4). An inner tube (5) is fixedly sleeved on the outside of the female connector (4), and an outer tube (6) is provided on the outside of the inner tube (5). Multiple fixing plates (7) are fixedly connected between the inner tube (5) and the outer tube (6). Multiple support blocks (8) are fixedly connected to the outer wall of the female connector (4). Each of the multiple support blocks (8) is provided with a groove. A traction plate (9) is provided in the groove. The traction plate (9) is rotatably connected to the inner wall of the groove through a torsion spring shaft (10). One end of the traction plate (9) is fixedly connected to a swing arm. Plate (11), one end of the swing plate (11) is fixedly connected to a clamping plate (12), the outer wall of the male connector (3) is fixedly connected to a plurality of positioning blocks (13) corresponding to the position of the support block (8), the plurality of positioning blocks (13) are provided with a slot corresponding to the clamping plate (12), the outer tube (6) is provided with a communicating slot at the position of the receiving cavity (18), the slot is provided with a pressure plate (14), the bottom of the pressure plate (14) is fixedly connected to a connecting rod (15), one end of the connecting rod (15) is fixedly connected to a pressure block (16), and both ends of the pressure block (16) are fixedly connected to the inner wall of the outer tube (6) with elastic elements (17).

2. A mining-grade female-female pipe joint according to claim 1, characterized in that: The male connector (3) and the female connector (4) have corresponding structures, and the diameter of the male connector (3) is smaller than the diameter of the female connector (4).

3. A mining-grade female-female pipe joint according to claim 1, characterized in that: The elastic element (17) is a spring.

4. A mining-grade female-female pipe joint according to claim 1, characterized in that: A receiving cavity (18) is formed between the plurality of the fixing plates (7), and one end of the traction plate (9) extends into the receiving cavity (18).

5. A mining-grade female-female pipe joint according to claim 1, characterized in that: A rubber ring (19) is fixedly connected inside the female connector (4), and the inner wall of one end of the rubber ring (19) is inclined.

6. A mine sub- sub tube coupling as defined in claim 1, wherein: The number of the multiple support blocks (8) is not less than four, and the adjacent support blocks (8) are equidistant from each other.

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