Plug-in connection type corrosion-resistant low-pressure pipe

Abstract

The utility model relates to the technical field of low-pressure pipes, in particular to a plug-in connection type corrosion-resistant low-pressure pipe which comprises a connecting pipe and a low-pressure pipe body, the outer surface of the low-pressure pipe body is fixedly connected with a limiting ring, and an automatic locking component is installed in the connecting pipe. The automatic locking part comprises moving rings, a pressing ring, moving grooves, an extrusion block and a locking rod, the two moving grooves are formed in the inner wall of the connecting pipe, the two moving rings are slidably connected to the two ends of the connecting pipe correspondingly, the extrusion block is fixedly connected with the moving rings, and the locking rod is fixedly connected with the pressing ring. The locking rod enters the locking hole through the matching effect of the moving ring, the pressing ring and the extrusion block, the low-pressure pipe body is fixed, it is guaranteed that the low-pressure pipe body cannot deviate under the action of external force to generate a gap through the limiting effect of the locking rod, the connection stability is improved, and the service life of the low-pressure pipe body is prolonged. Meanwhile, the water leakage phenomenon caused by the internal pressure effect is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure pipe technology, and in particular to a plug-in type corrosion-resistant low-pressure pipe. Background Technology

[0002] Existing plug-in type corrosion-resistant low-pressure pipes are used by directly inserting the low-pressure pipe into the connecting pipe and using a slot to limit the low-pressure pipe. However, the limiting effect of the slot is unreliable. Once subjected to external force, gaps can easily appear, resulting in water or air leakage. At the same time, this connection method does not allow for the disassembly of the low-pressure pipe, making maintenance troublesome. If the low-pressure pipe is damaged, it can only be replaced as a whole, increasing losses. Utility Model Content

[0003] The purpose of this utility model is to solve the following shortcomings in the existing technology. When using the existing plug-in connection type corrosion-resistant low-pressure pipe, the low-pressure pipe is directly inserted into the connecting pipe, and the low-pressure pipe is limited by the groove. The limiting effect of the groove is not reliable. Once subjected to external force, gaps are easily generated, resulting in water or air leakage. At the same time, this connection method makes it impossible to disassemble the low-pressure pipe, which makes the maintenance process troublesome. If the low-pressure pipe is damaged, it can only be replaced as a whole, which increases the loss. Therefore, the proposed plug-in connection type corrosion-resistant low-pressure pipe is proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plug-in type corrosion-resistant low-pressure pipe includes a connecting pipe and a low-pressure pipe body, wherein a limit ring is fixedly connected to the outer surface of the low-pressure pipe body.

[0006] An automatic locking component is installed inside the connecting pipe. The automatic locking component includes a moving ring, a pressing ring, a moving groove, a squeezing block, and a locking rod. Two moving grooves are formed on the inner wall of the connecting pipe. Two moving rings are slidably connected to both ends of the connecting pipe. The squeezing block is fixedly connected to the moving ring and has a locking hole. The squeezing block is slidably connected in the moving groove. Two pressing rings are slidably connected in the moving ring. Multiple pressing springs are installed in a circular array between the pressing ring and the inner wall of the moving ring. Two locking rods are slidably connected to the connecting pipe and the squeezing block. The locking rod is slidably connected in the locking hole.

[0007] Preferably, the limiting ring is slidably connected to the clamping ring, the outer surface of the moving ring is provided with a square through hole, a square plate is slidably connected in the square through hole, the square plate is fixedly connected to one of the clamping rings, a protective chamber is fixedly connected to the outer surface of the connecting pipe, and a straight plate is slidably connected in the protective chamber.

[0008] Preferably, the straight plate is fixedly connected to the locking rod, and a return spring is fixedly connected between the straight plate and the outer surface of the connecting tube.

[0009] Preferably, a pull plate is fixedly connected to the upper surface of the straight plate, and a screw is threadedly connected to the protective chamber, with the screw slidably connected to the straight plate.

[0010] Preferably, a sealing ring is fixedly connected inside the connecting pipe, and the low-pressure pipe body is slidably connected inside the sealing ring.

[0011] Preferably, sealing grooves are provided on both sides of the sealing ring, and a closing ring is fixedly connected to the outer surface of the moving ring, with the closing ring slidably connected within the sealing groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The locking rod is inserted into the locking hole by the cooperation of the moving ring, the pressing ring and the squeezing block, thus fixing the low-pressure pipe body. The limiting effect of the locking rod ensures that the low-pressure pipe body will not shift under the action of external force and produce gaps, thereby improving the stability of the connection and preventing water leakage due to internal pressure.

[0014] 2. Through the cooperation of the sealing ring, the sealing ring, and the low-pressure pipe body, the two low-pressure pipe bodies and the sealing ring form a completely sealed whole, which further improves the water-proof ability of the low-pressure pipe body, increases its service life, and prevents internal water from flowing to the connecting parts and corroding them.

[0015] 3. The low-pressure pipe body can be removed from the connecting pipe by the cooperation of parts such as the pull plate, square plate, and locking rod, which facilitates later maintenance and replacement, reduces wear and tear, and saves replacement costs. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of a plug-in type corrosion-resistant low-pressure pipe proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of a plug-in type corrosion-resistant low-pressure pipe according to the present invention.

[0018] Figure 3 This is a schematic diagram of the movable ring structure of a plug-in connection type corrosion-resistant low-pressure pipe proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the extrusion block structure of a plug-in type corrosion-resistant low-pressure pipe proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the protective chamber structure for a plug-in type corrosion-resistant low-pressure pipe proposed in this utility model.

[0021] In the diagram: 1 Connecting pipe, 2 Low-pressure pipe body, 3 Limiting ring, 4 Moving ring, 5 Pressing ring, 6 Pressing spring, 7 Moving groove, 8 Pressing block, 9 Protective chamber, 10 Locking rod, 11 Straight plate, 12 Return spring, 13 Pull plate, 14 Screw, 15 Sealing ring, 16 Sealing groove, 17 Closing ring, 18 Square plate. Detailed Implementation

[0022] 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.

[0023] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0024] Reference Figures 1-5 A plug-in type corrosion-resistant low-pressure pipe includes a connecting pipe 1 and a low-pressure pipe body 2. Both the outer and inner surfaces of the connecting pipe 1 and the low-pressure pipe body 2 are coated with anti-corrosion paint to improve their corrosion resistance. The radius of the connecting pipe 1 is larger than the radius of the low-pressure pipe body 2. A limit ring 3 is fixedly connected to the outer surface of the low-pressure pipe body 2. An automatic locking component is installed inside the connecting pipe 1, including a moving ring 4, a pressing ring 5, a moving groove 7, a pressing block 8, and a locking rod 10. The radius of the limit ring 3 is larger than the radius of the low-pressure pipe body 2. Two moving grooves 7 are formed on the inner wall of the connecting pipe 1, and the moving grooves 7 are square. The configuration includes two movable rings 4 slidably connected to the two ends of the connecting pipe 1, a pressing block 8 fixedly connected to the movable rings 4, a locking hole on the pressing block 8, the pressing block 8 being a right trapezoidal shape, and its inclined surface contacting the locking rod 10 immediately, the pressing block 8 being slidably connected in the movable groove 7, two pressing rings 5 ​​being slidably connected in the movable rings 4, multiple pressing springs 6 being installed in a ring array between the pressing rings 5 ​​and the inner wall of the movable rings 4, two locking rods 10 being slidably connected to the connecting pipe 1, the locking rods 10 being slidably connected to the pressing block 8, the radius of the locking rods 10 being slightly smaller than the radius of the locking hole, and the locking rods 10 being slidably connected in the locking hole.

[0025] The limiting ring 3 is slidably connected to the clamping ring 5. A square through hole is opened on the outer surface of the moving ring 4. A square plate 18 is slidably connected in the square through hole. The square plate 18 is fixedly connected to one of the clamping rings 5. A protective chamber 9 is fixedly connected to the outer surface of the connecting pipe 1. The function of the protective chamber 9 is to prevent the internal return spring 12 from being corroded. A straight plate 11 is slidably connected in the protective chamber 9. The straight plate 11 is fixedly connected to the locking rod 10. A round hole is opened on the outer surface of the straight plate 11. A return spring 12 is fixedly connected between the straight plate 11 and the outer surface of the connecting pipe 1. A pull plate 13 is fixedly connected to the upper surface of the straight plate 11. A screw 14 is threadedly connected to the protective chamber 9. The screw 14 and... The straight plate 11 is slidably connected, and a sealing ring 15 is fixedly connected inside the connecting pipe 1. The low-pressure pipe body 2 is slidably connected inside the sealing ring 15. The sealing ring 15 is supported by rubber material and has good extensibility. The low-pressure pipe body 2 will enter the sealing ring 15, thereby expanding the radius of the sealing ring 15. The two low-pressure pipe bodies 2 will be tightly fitted inside the sealing ring 15, and the sealing ring 15 will completely wrap their joint to prevent water leakage. Sealing grooves 16 are opened on both sides of the sealing ring 15. A closing ring 17 is fixedly connected to the outer surface of the moving ring 4. The closing ring 17 is slidably connected inside the sealing groove 16 and will be tightly fitted to the inner wall of the sealing groove 16.

[0026] In this invention, when installing the low-pressure pipe body 2, it is first placed into the connecting pipe 1. The limiting ring 3 on the outer surface of the low-pressure pipe body 2 presses against the clamping ring 5 inside the moving ring 4. The clamping ring 5 moves into the moving ring 4 under the pressure of the limiting ring 3. Continuing to push the low-pressure pipe body 2, the limiting ring 3 passes through the clamping ring 5, and the clamping ring 5 is no longer under the action of the limiting ring 3. At this time, the clamping ring 5 acts directly on the low-pressure pipe body 2. Through the clamping action of the clamping ring 5, the low-pressure pipe body 2 is prevented from moving. Continuing to push the low-pressure pipe body 2, the low-pressure pipe body 2 drives the moving ring 4 to move. The movement of the moving ring 4 causes the pressing block 8 to slide in the moving groove 7. The sliding of the pressing block 8 causes the moving ring 4 to approach the sealing ring 15. When it moves to a certain position, one end of the low-pressure pipe body 2 first enters the sealing ring 15. The sealing ring 15 tightly fits the low-pressure pipe body 2, preventing leakage. When the low-pressure pipe body 2 enters the sealing ring 15, the squeezing block 8 pushes the locking rod 10 upward. The locking rod 10 moves upward until the spherical end of the locking rod 10 slides on the upper surface of the squeezing block 8. When the low-pressure pipe body 2 is fully inside the sealing ring 15, the locking rod 10 enters the locking hole of the squeezing block 8 under the action of the return spring 12. At this time, the locking rod 10 limits the left and right movement of the squeezing block 8 and the moving ring 4 to prevent the moving ring 4 from displacing and to ensure the stability of the connection. At the same time, the screw 14 is tightened and enters the round hole of the pull plate 13, thereby limiting the movement of the straight plate 11 and preventing the locking rod 10 from disengaging from the locking hole, thus improving the stability of the device. The closing ring 17 on the moving ring 4 will enter the sealing groove 16. At this time, the moving ring 4 and the sealing ring 15 are in contact, thus ensuring that the two low-pressure pipe bodies 2 and the sealing ring 15 form a completely sealed whole and prevent water leakage.

[0027] When disassembly is required, first unscrew screw 14 from the protective chamber 9, pull pull plate 13, pull plate 13 drives straight plate 11 and locking rod 10 to move upward, locking rod 10 disengages from locking hole, releasing the limiting effect on compression block 8 and moving ring 4, then pull low-pressure pipe body 2 forcefully, so that low-pressure pipe body 2 disengages from sealing ring 15. When low-pressure pipe body 2 moves to one end of connecting pipe 1, pull square plate 18, so that square plate 18 drives compression ring 5 to move, releasing the limiting effect of compression ring 5 on limiting ring 3, so that low-pressure pipe body 2 can be easily removed, facilitating later maintenance and replacement.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0029] 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 plug-in type corrosion-resistant low-pressure pipe, comprising a connecting pipe (1) and a low-pressure pipe body (2), characterized in that, A limit ring (3) is fixedly connected to the outer surface of the low-pressure pipe body (2); An automatic locking component is installed inside the connecting pipe (1). The automatic locking component includes a moving ring (4), a pressing ring (5), a moving groove (7), a squeezing block (8), and a locking rod (10). The two moving grooves (7) are opened on the inner wall of the connecting pipe (1). The two moving rings (4) are slidably connected to the two ends of the connecting pipe (1). The squeezing block (8) is fixedly connected to the moving ring (4). The squeezing block (8) has a locking hole. The squeezing block (8) is slidably connected in the moving groove (7). The two pressing rings (5) are slidably connected in the moving ring (4). Multiple pressing springs (6) are installed in a ring array between the pressing ring (5) and the inner wall of the moving ring (4). The two locking rods (10) are slidably connected to the connecting pipe (1). The locking rod (10) is slidably connected to the squeezing block (8). The locking rod (10) is slidably connected in the locking hole.

2. The plug-in type corrosion-resistant low-pressure pipe according to claim 1, characterized in that, The limiting ring (3) is slidably connected to the clamping ring (5). A square through hole is opened on the outer surface of the moving ring (4). A square plate (18) is slidably connected in the square through hole. The square plate (18) is fixedly connected to one of the clamping rings (5). A protective chamber (9) is fixedly connected to the outer surface of the connecting pipe (1). A straight plate (11) is slidably connected in the protective chamber (9).

3. The plug-in type corrosion-resistant low-pressure pipe according to claim 2, characterized in that, The straight plate (11) is fixedly connected to the locking rod (10), and a return spring (12) is fixedly connected between the straight plate (11) and the outer surface of the connecting tube (1).

4. The plug-in type corrosion-resistant low-pressure pipe according to claim 2, characterized in that, A pull plate (13) is fixedly connected to the upper surface of the straight plate (11), and a screw (14) is threadedly connected to the protective chamber (9). The screw (14) is slidably connected to the straight plate (11).

5. A plug-in type corrosion-resistant low-pressure pipe according to claim 1, characterized in that, A sealing ring (15) is fixedly connected inside the connecting pipe (1), and the low-pressure pipe body (2) is slidably connected inside the sealing ring (15).

6. A plug-in type corrosion-resistant low-pressure pipe according to claim 5, characterized in that, The sealing ring (15) has sealing grooves (16) on both sides, and the outer surface of the moving ring (4) is fixedly connected to a closing ring (17), which is slidably connected in the sealing groove (16).

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