Pipeline connecting joint for municipal heating
By designing a pipe connection for municipal heating, the sliding connection between the first connecting ring and the second connecting ring and the pipe body, combined with the fixing mechanism of the fixing component, the problem of high working strength of the staff during the water pipe connection in the prior art is solved, and the stable fixed connection and high sealing of the water pipe and the pipe body are achieved.
Patent Information
- Application Number
- CN202421805864.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When connecting large or long water pipes, existing pipe connections need to rotate the water pipes, resulting in high working intensity for staff.
A pipe connection for municipal heating is designed, and the sliding connection between the first connecting ring and the second connecting ring and the pipe body is adopted to fix the water pipe and the pipe body through a fixing component to avoid the need to rotate the water pipe.
The fixed connection between the water pipe and the pipe body is realized, and the staff does not need to manually rotate the water pipe, which reduces the working strength of the staff and improves the sealing of the connection.
Smart Images
Figure CN222783142U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pipeline connection and assembly, and in particular to a pipeline connection joint for municipal heating. Background Art
[0002] Pipe connection joints are a type of pipe fittings that connect water pipes. Their main function is to connect water pipes together so that water flows smoothly. At the same time, they can effectively prevent leakage and loosening to ensure the safety of water pipes.
[0003] The existing pipe connecting joint includes a connecting head, which is hollow inside. The end of the connecting head is provided with a first thread groove along the circumferential inner wall, and the end of the water pipe is provided with a second thread groove along the circumferential outer wall. The water pipe and the connecting head are threadably adapted. When connecting two water pipes, first move one end of the connecting head to the end of the first water pipe, rotate the connecting head so that the connecting head and the first water pipe are threadedly connected, and then move the second water pipe so that the end of the second water pipe moves to an end of the connecting head away from the first water pipe, rotate the second water pipe, and the second water pipe and the connecting head are threadedly connected, so that the connecting head realizes the connection of the two water pipes.
[0004] With regard to the above-mentioned related technologies, after the first water pipe and the connector are connected, when connecting the second water pipe, the second water pipe needs to be rotated. When the second water pipe is heavy or long, rotating the water pipe is time-consuming and laborious, resulting in a defect of high work intensity for the staff. Utility Model Content
[0005] In order to reduce the workload of staff, the present application provides a pipe connection joint for municipal heating.
[0006] The municipal heating pipe connection joint provided in this application adopts the following technical solution:
[0007] A pipe connection joint for municipal heating is suitable for water pipes. The circumferential outer wall of the end of the water pipe is provided with a thread, including a pipe body and a first connecting ring. The opposite ends of the pipe body are provided with a first connecting pipe and a second connecting pipe. One end of the first connecting pipe is located in the pipe body and is slidably connected to the pipe body, and one end of the second connecting pipe is located outside the pipe body and is slidably connected to the pipe body. A second connecting ring is provided on the outer sleeve of the first connecting pipe. The second connecting ring is fixedly connected to the first connecting pipe. The second connecting ring is connected to the second connecting pipe. The first connecting pipe and the water pipe are plug-fitted and adapted and are located in the pipe body. Two first connecting rings are provided. The inner wall of the first connecting ring is provided with a thread along the circumferential side wall. The first connecting ring and the water pipe are threadably adapted. The first connecting ring and the second connecting pipe are plug-fitted and adapted and are located in the second connecting pipe. A fixing component that can be fixed and separated from the second connecting pipe is provided at the first connecting ring.
[0008] By adopting the above technical solution, firstly, the two first connecting rings are threadedly connected to the ends of the two water pipes, and then the pipe body is moved so that the end of the first water pipe and the first connecting ring extend between the first connecting pipe and the second connecting pipe, and the fixing component fixes the first connecting ring and the second connecting pipe, thereby realizing the connection between the first water pipe and the pipe body, and then the end of the second water pipe is extended between the other first connecting pipe and the second connecting pipe, and the fixing component fixes the first connecting ring and the second connecting pipe, thereby completing the fixation of the second water pipe and the pipe body, without rotating the second water pipe, thereby reducing the workload of the staff.
[0009] Optionally, a card slot is formed through the inner wall of the second connecting tube, a first movable slot is formed on the outer wall of the first connecting ring, and the fixing component includes a card block and a first spring. The card block is arranged in the first movable slot, the card block and the first connecting ring are slidably connected, the card block and the card slot are snap-fitted, and the first spring is fixed between the card block and the bottom wall of the first movable slot.
[0010] By adopting the above technical solution, when the first connecting pipe and the second connecting pipe move toward the water pipe, the blocking block moves toward the first movable groove through the guidance of the second connecting pipe, and gradually moves into the first movable groove, the first spring is compressed, and when the water pipe and the second annular plate abut, the blocking block and the groove are aligned, the first spring releases the elastic force, and pushes the blocking block to be clamped into the groove, thereby realizing the clamping and fixing of the second connecting ring and the second connecting pipe.
[0011] Optionally, the second connecting ring is located in the middle of the first connecting tube and the second connecting tube, and a first sealing gasket is provided on a side of the second connecting ring away from the tube body.
[0012] By adopting the above technical solution, after the second connecting ring and the second connecting pipe are fixed, the end of the water pipe and the first sealing gasket are tightly abutted. The setting of the first sealing gasket makes it difficult for water to flow to the outside through the gap between the first connecting pipe and the water pipe, thereby improving the sealing of the connecting head.
[0013] Optionally, a second movable groove is provided on the inner wall of the second connecting tube, the second connecting tube is slidably connected to a fixed block in the second movable groove, a side of the fixed block away from the first connecting tube is fixedly connected to a sliding rod, an end of the sliding rod away from the fixed block passes through the second connecting tube and is slidably connected to the second connecting tube, a fixing groove is provided on a side wall of the second connecting ring away from the first connecting tube, and the fixed block and the fixing groove are plug-fitted.
[0014] By adopting the above technical solution, when the first sealing gasket is damaged, the sliding rod is moved in the direction away from the second connecting tube, the sliding rod drives the fixed block to move, the fixed block and the fixed groove are disengaged, the connection between the second connecting tube and the second connecting ring is released, the second connecting tube is moved in the direction away from the first connecting tube, so that the second connecting tube and the first connecting tube are disengaged, and then the first sealing gasket is replaced, thereby providing convenience for replacing the first sealing gasket.
[0015] Optionally, one end of the slide rod outside the second connecting tube is fixedly connected to a pull plate, the pull plate and the slide rod are perpendicular, a second spring is fixed between the pull plate and the second connecting tube, and the second spring is sleeved outside the slide rod.
[0016] By adopting the above technical solution, the pull plate is pulled, the pull plate drives the sliding rod to move, and the second spring is stretched. When the first sealing gasket is replaced, the second connecting tube is moved so that the second connecting tube is sleeved outside the first connecting tube. In the process of the movement of the second connecting tube, when the fixing block and the fixing groove are aligned, the pull plate is released, the second spring contracts, the second spring drives the pull plate to move, the pull plate drives the sliding rod to move, the sliding rod drives the fixing block to move, and the end of the fixing block away from the sliding rod moves into the fixing groove, thereby fixing the second connecting tube and the second connecting ring. At the same time, the first spring always exerts a force on the pull plate in the direction of the second connecting tube, so that the fixing block and the fixing groove are not easy to separate, thereby improving the stability of the connection between the second connecting tube and the second connecting ring.
[0017] Optionally, an auxiliary block is fixedly connected to the outer wall of the middle part of the tube body, the auxiliary block is perpendicular to the tube body, a displacement groove is opened through the side wall of the auxiliary block along its own length direction, a screw is provided on the auxiliary block, the length direction of the screw is parallel to the length direction of the auxiliary block, one end of the screw is in the displacement groove, the end of the screw away from the tube body passes through the auxiliary block and is threadedly connected to the auxiliary block, a fixing rod is provided on the auxiliary block, the length direction of the fixing rod is parallel to the length direction of the tube body, the middle part of the fixing rod is in the displacement groove, both ends of the fixing rod are outside the auxiliary block, and the end of the screw in the displacement groove is rotatably connected to the fixing rod.
[0018] By adopting the above technical solution, when the two water pipes are in a fixed state and are connected, the two second connecting pipes are first moved in relative directions, the second connecting pipes move along the length direction of the pipe body, the second connecting pipes drive the second connecting ring and the first connecting pipe to move, shortening the overall length of the connector, and then the two first connecting pipes and the two second connecting pipes are moved between the two water pipes, the second connecting pipes are pushed in opposite directions, so that the ends of the two water pipes are distributed between the first connecting pipes and the second connecting pipes, and then the screw is rotated, the screw drives the fixing rod to move toward the pipe body, and the two ends of the fixing rod respectively abut against the side of the two second connecting pipes close to the auxiliary block, blocking the second connecting pipes, so that the second connecting pipes are not easy to move toward the auxiliary block.
[0019] Optionally, one end of the screw rod away from the fixing rod is fixedly connected to a hand wheel.
[0020] By adopting the above technical solution, the hand wheel is turned, and the hand wheel drives the screw rod to rotate. The setting of the hand wheel provides convenience for rotating the screw rod.
[0021] Optionally, a sliding groove is provided at one end of the first connecting tube close to the tube body along the circumferential side wall and in a direction away from the second connecting ring, and the sliding groove is connected end to end. The first connecting tube sleeve is provided with an annular baffle, and the sliding baffle is in the sliding groove. The annular baffle is fixedly connected to the end of the tube body, and a second sealing gasket is fixedly provided on the side of the annular baffle facing away from the second connecting ring.
[0022] By adopting the above technical solution, when the first connecting tube slides along the tube body, the first connecting tube drives the annular baffle to move in the slide groove. When the fixed rod abuts the second connecting tube, the second sealing gasket and the side wall of the slide groove away from the auxiliary block are tightly abutted. The second sealing gasket blocks the water flowing in the gap between the tube body and the first connecting tube, making it difficult for the water to flow to the outside, thereby improving the sealing of the connecting head.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By threading the first connecting ring on the end of the water pipe, and then placing the end of the water pipe and the first connecting ring between the first connecting pipe and the second connecting pipe, the fixing assembly completes the fixing of the second connecting pipe and the first connecting ring, thereby achieving the fixing of the water pipe and the pipe body, without the need for the staff to manually rotate the water pipe, thereby reducing the work intensity of the staff;
[0025] 2. By setting the first sealing gasket, water is not easy to overflow from the gap between the water pipe and the first connecting pipe, thereby improving the sealing performance of the connecting head;
[0026] 3. The second connecting tube is fixed to the first connecting tube by the fixing rod abutting against the second connecting tube and the abutting between the apartment baffle and the side wall of the slide away from the auxiliary groove, so that the first connecting tube and the second connecting tube are not easy to move relative to the tube body. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 This is a schematic structural diagram of a municipal heating pipe connection joint according to an embodiment of the present application;
[0028] Figure 2 This is a cross-sectional view of the structure inside the second connecting pipe in the embodiment of the present application;
[0029] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;
[0030] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B.
[0031] In the figure, 1, water pipe; 2, pipe body; 3, first connecting ring; 31, first movable groove; 4, first connecting pipe; 41, slide groove; 5, second connecting pipe; 51, clamping groove; 52, second movable groove; 53, fixed block; 54, slide rod; 55, pull plate; 56, second spring; 6, second connecting ring; 61, fixed groove; 62, first sealing gasket; 7, fixing assembly; 71, clamping block; 72, first spring; 8, auxiliary block; 81, displacement groove; 82, screw; 83, fixed rod; 84, hand wheel; 9, annular baffle; 91, second sealing gasket. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-Figure 4 This application is described in further detail.
[0033] The embodiment of the present application discloses a pipe connection joint for municipal heating.
[0034] refer to Figure 1 A municipal heating pipe connection joint is suitable for a water pipe 1, including a pipe body 2, an auxiliary block 8 is fixedly connected to the upper surface of the pipe body 2, the auxiliary block 8 is perpendicular to the pipe body 2, and second connecting pipes 5 are arranged at both ends of the pipe body 2. The second connecting pipe 5 is sleeved outside the pipe body 2 and slidably connected to the pipe body 2.
[0035] refer to Figure 1 , Figure 2 and Figure 3An auxiliary block 8 is fixedly connected to the middle of the outer wall of the tube body 2, and the length direction of the auxiliary block 8 is perpendicular to the length direction of the tube body 2. First connecting tubes 4 are arranged at opposite ends of the tube body 2, one end of the first connecting tube 4 is in the tube body 2 and is slidably connected to the tube body 2, a second connecting ring 6 is sleeved on the first connecting tube 4, the second connecting ring 6 is in the middle of the first connecting tube 4, the second connecting ring 6 is fixedly connected to the first connecting tube 4, a second connecting tube 5 is sleeved outside the second connecting ring 6, a side wall of the second connecting ring 6 away from the first connecting tube 4 is provided with a fixed groove 61, a second movable groove 52 is provided on the inner wall of the second connecting tube 5, and the second connecting tube 5 is slidably connected at the second movable groove 52 A fixed block 53 is plugged and fitted with the fixed groove 61. A sliding rod 54 is fixedly connected to the side of the fixed block 53 facing the inner bottom wall of the second movable groove 52. The length direction of the sliding rod 54 is perpendicular to the length direction of the second connecting tube 5. The sliding rod 54 penetrates the second connecting tube 5 and is slidably connected with the second connecting tube 5. A pull plate 55 is fixedly connected to the end of the sliding rod 54 away from the fixed block 53. The pull plate 55 and the sliding rod 54 are perpendicular. A second spring 56 is fixedly provided between the pull plate 55 and the second connecting tube 5. The second spring 56 is sleeved on the outside of the sliding rod 54. A first sealing gasket 62 is provided on the side of the second connecting ring 6 away from the tube body 2. The first sealing gasket 62 is an annular gasket made of rubber material.
[0036] The pipe body 2 is moved so that one end of the water pipe 1 extends between the first connecting pipe 4 and the second connecting pipe 5, and the end of the water pipe 1 is tightly abutted against the first sealing gasket 62. When the first sealing gasket 62 is damaged, the pull plate 55 is pulled away from the second connecting pipe 5, and the pull plate 55 drives the slide bar 54 to move, and the slide bar 54 drives the fixing block 53 to move, so that the fixing block 53 and the fixing groove 61 are disengaged, and the second spring 56 is stretched, and then the second connecting pipe 5 is moved away from the auxiliary block 8, so that the second connecting pipe 5 and the fixing groove 61 are disengaged. The first connecting tube 4 is detached and the first sealing gasket 62 is replaced. When the first sealing gasket 62 is replaced, the second connecting tube 5 is moved toward the auxiliary block 8. When the fixing block 53 and the fixing groove 61 are aligned, the pull plate 55 is released, and the second spring 56 contracts, driving the pull plate 55 to move toward the second connecting tube 5. The pull plate 55 drives the sliding rod 54 to move, and the sliding rod 54 drives the fixing block 53 to move. One end of the fixing block 53 is inserted into the fixing groove 61, thereby realizing the relative fixation of the second connecting tube 5 and the first connecting tube 4.
[0037] refer to Figure 1 , Figure 2 and Figure 4A slot 51 is provided at one end of the second connecting pipe 5 away from the auxiliary block 8, a thread is provided on the outer wall of one end of the water pipe 1, a first connecting ring 3 is threadedly connected to the water pipe 1, the first connecting ring 3 and the second connecting pipe 5 are plugged in and fitted, a first movable groove 31 is provided on the outer wall of the first connecting ring 3, and a fixing component 7 for clamping and fixing the first connecting ring 3 with the second connecting pipe 5 is provided in the first movable groove 31.
[0038] The fixing assembly 7 includes a block 71 and a first spring 72. The block 71 is arranged in the first movable groove 31. The block 71 and the first connecting ring 3 are slidably connected. The first spring 72 is fixed between the block 71 and the inner bottom wall of the first movable groove 31. The block 71 and the groove 51 are snap-fitted together, and the side of the block 71 away from the first spring 72 is set as an inclined surface.
[0039] When two water pipes 1 are connected, firstly, the two first connecting rings 3 are respectively threadedly connected to the ends of the water pipes 1, and then the pipe body 2 is moved so that one end of the water pipe 1 connected to the first connecting ring 3 and the first connecting ring 3 extend between the first connecting pipe 4 and the second connecting pipe 5, wherein when the first connecting ring 3 enters between the first connecting pipe 4 and the second connecting pipe 5, the inclined surface of the block 71 first contacts with the second connecting pipe 5, and the second connecting pipe 5 pushes the block 71 to move toward the first movable groove 31, and the first spring 72 is compressed. When the block 71 and the groove 51 are aligned, the first spring 72 releases the elastic force and pushes the block 71 to move toward the groove 51, and one end of the block 71 extends into the groove 51, thereby realizing the connection between the first connecting ring 3 and the second connecting pipe 5, and then realizing the connection between the water pipe 1 and the second connecting pipe 5.
[0040] refer to Figure 1 and Figure 2 A slide groove 41 is provided along the circumferential outer wall of one end of the first connecting tube 4 close to the tube body 2, and the slide groove 41 is connected end to end. An annular baffle plate 9 is sleeved on the first connecting tube 4, and the annular baffle plate 9 is slidably connected to the first connecting tube 4. The annular baffle plate 9 is in the slide groove 41, and the end of the tube body 2 is fixedly connected to the annular baffle plate 9. A second sealing gasket 91 is fixedly provided on the side of the annular baffle plate 9 away from the second connecting ring 6. The second sealing gasket 91 is annular and is made of rubber material.
[0041] First, move the second connecting tube 5 toward the auxiliary block 8 until the two second connecting tubes 5 are between the two water pipes 1 and the length direction of the second connecting tube 5 is parallel to the length direction of the water pipe 1. Then move the second connecting tube 5 toward the opposite sides. The second connecting tube 5 drives the second connecting ring 6 to move, and the second connecting ring 6 drives the first connecting tube 4 to move. When the end of the water pipe 1 abuts against the first sealing gasket 62, the second sealing gasket 91 and the slide groove 41 abut against one side wall close to the auxiliary block 8, so that the water flow is not easy to flow to the outside from the gap between the first connecting tube 4 and the tube body 2.
[0042] refer to Figure 1 and Figure 2 An auxiliary block 8 is fixedly connected to the outer surface of the tube body 2, and the auxiliary block 8 is located between the two second connecting tubes 5. The length direction of the auxiliary block 8 is perpendicular to the length direction of the tube body 2. A displacement groove 81 is penetrated through the side wall of the auxiliary block 8 along its own length direction. A fixing rod 83 is provided on the auxiliary block 8, and the length direction of the fixing rod 83 is perpendicular to the length direction of the auxiliary block 8. The fixing rod 83 penetrates the displacement groove 81 and is slidably connected to the auxiliary block 8. A screw 82 is provided on the auxiliary block 8, and the length direction of the screw 82 is parallel to the length direction of the auxiliary block 8. One end of the screw 82 penetrates a side wall of the displacement groove 81 and extends into the displacement groove 81. The screw 82 is threadedly connected to the auxiliary block 8, and one end of the screw 82 in the displacement groove 81 is rotatably connected to the fixing rod 83. The end of the screw 82 away from the fixing rod 83 is fixedly connected to a hand wheel 84, and the hand wheel 84 is perpendicular to the fixing rod 83.
[0043] When connecting the two water pipes 1, turn the hand wheel 84, the hand wheel 84 drives the screw rod 82 to rotate, and under the guidance of the displacement groove 81, the screw rod 82 drives the fixing rod 83 to move, so that the fixing rod 83 moves in the direction away from the pipe body 2, and then slide the two second connecting pipes 5 in the direction of the auxiliary block 8. After the sliding is completed, the second connecting pipe 5 is placed between the two water pipes 1, and the length direction of the second connecting pipe 5 is parallel to the length direction of the water pipe 1. Move the two second connecting pipes 5 in the direction away from the auxiliary block 8, so that the two second connecting pipes 5 are respectively sleeved on the water pipes 1 on both sides, and then turn the hand wheel 84, the hand wheel 84 drives the screw rod 82 to rotate, and the screw rod 82 drives the fixing rod 83 to move in the direction of the pipe body 2, and the ends of the fixing rod 83 respectively abut against the side wall of the second connecting pipes 5 on both sides close to the auxiliary block 8, so that the second connecting pipes 5 are not easy to move in the direction of the auxiliary block 8.
[0044] The implementation principle of a municipal heating pipe connection joint in an embodiment of the present application is as follows: first, the two first connecting rings 3 are respectively threadedly connected to the ends of the two water pipes 1, the second connecting pipe 5 is moved toward the auxiliary block 8, and the two second connecting pipes 5 are placed between the two water pipes 1 along the length direction of the water pipe 1, and the second connecting pipe 5 is moved away from the auxiliary block 8, so that the end of the water pipe 1 is between the first connecting pipe 4 and the second connecting pipe 5, and the end of the water pipe 1 is tightly abutted against the first sealing gasket 62, and at the same time, the fixing component 7 completes the fixation of the first connecting ring 3 and the second connecting pipe 5, thereby realizing the connection between the water pipe 1 and the second connecting pipe 5, without the need for the staff to manually rotate the water pipe 1, thereby reducing the work intensity of the staff.
[0045] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A municipal heating pipe connection joint, suitable for a water pipe (1), wherein the circumferential outer wall of the end of the water pipe (1) is provided with threads, characterized in that: The invention comprises a tube body (2) and a first connecting ring (3), wherein the first connecting tube (4) and the second connecting tube (5) are arranged at opposite ends of the tube body (2), one end of the first connecting tube (4) is located inside the tube body (2) and is slidably connected to the tube body (2), one end of the second connecting tube (5) is located outside the tube body (2) and is slidably connected to the tube body (2), a second connecting ring (6) is arranged outside the first connecting tube (4), the second connecting ring (6) is fixedly connected to the first connecting tube (4), and the second connecting ring (6) is The first connecting pipe (4) and the water pipe (1) are connected to each other by plugging and fitting, and are located in the pipe body (2). Two first connecting rings (3) are provided. The inner wall of the first connecting ring (3) is provided with threads along the circumferential side wall. The first connecting ring (3) and the water pipe (1) are threadedly fitted. The first connecting ring (3) and the second connecting pipe (5) are plugged and fitted, and are located in the second connecting pipe (5). The first connecting ring (3) is provided with a fixing component (7) that can be fixed and separated from the second connecting pipe (5).
2. A municipal heating pipe connection joint according to claim 1, characterized in that: The inner wall of the second connecting tube (5) is provided with a slot (51), the outer wall of the first connecting ring (3) is provided with a first movable slot (31), the fixing assembly (7) comprises a block (71) and a first spring (72), the block (71) is arranged in the first movable slot (31), the block (71) and the first connecting ring (3) are slidably connected, the block (71) and the slot (51) are snap-fitted, and the first spring (72) is fixed between the block (71) and the inner bottom wall of the first movable slot (31).
3. A municipal heating pipe connection joint according to claim 1, characterized in that: The second connecting ring (6) is located in the middle of the first connecting tube (4) and the second connecting tube (5), and a first sealing gasket (62) is provided on the side of the second connecting ring (6) away from the tube body (2).
4. A municipal heating pipe connection joint according to claim 1, characterized in that: The inner wall of the second connecting tube (5) is provided with a second movable groove (52), the second connecting tube (5) is slidably connected with a fixed block (53) in the second movable groove (52), a side of the fixed block (53) away from the first connecting tube (4) is fixedly connected with a sliding rod (54), an end of the sliding rod (54) away from the fixed block (53) passes through the second connecting tube (5) and is slidably connected with the second connecting tube (5), a side wall of the second connecting ring (6) away from the first connecting tube (4) is provided with a fixed groove (61), and the fixed block (53) and the fixed groove (61) are plug-fitted and matched.
5. A municipal heating pipe connection joint according to claim 4, characterized in that: One end of the slide bar (54) outside the second connecting tube (5) is fixedly connected to a pull plate (55), the pull plate (55) and the slide bar (54) are perpendicular, a second spring (56) is fixedly arranged between the pull plate (55) and the second connecting tube (5), and the second spring (56) is sleeved outside the slide bar (54).
6. A municipal heating pipe connection joint according to claim 1, characterized in that: An auxiliary block (8) is fixedly connected to the outer wall of the middle part of the tube body (2). The auxiliary block (8) is perpendicular to the tube body (2). A displacement groove (81) is formed through the side wall of the auxiliary block (8) along its length direction. A screw rod (82) is provided on the auxiliary block (8). The length direction of the screw rod (82) is parallel to the length direction of the auxiliary block (8). One end of the screw rod (82) is located in the displacement groove (81). One end of the screw rod (82) away from the tube body (2) passes through the auxiliary block (8) and is threadedly connected to the auxiliary block (8). A fixing rod (83) is provided on the auxiliary block (8). The length direction of the fixing rod (83) is parallel to the length direction of the tube body (2). The middle part of the fixing rod (83) is located in the displacement groove (81). Both ends of the fixing rod (83) are located outside the auxiliary block (8). One end of the screw rod (82) located in the displacement groove (81) is rotatably connected to the fixing rod (83).
7. A municipal heating pipe connection joint according to claim 6, characterized in that: One end of the screw rod (82) away from the fixing rod (83) is fixedly connected to a hand wheel (84).
8. The municipal heating pipe connection joint according to claim 1, characterized in that: The first connecting tube (4) has an end near the tube body (2) with a sliding groove (41) along the circumferential side wall and in a direction away from the second connecting ring (6). The sliding groove (41) is connected end to end. The first connecting tube (4) is sleeved with an annular baffle (9), which is located in the sliding groove (41). The annular baffle (9) is fixedly connected to the end of the tube body (2). A second sealing gasket (91) is fixedly provided on the side of the annular baffle (9) facing away from the second connecting ring (6).