Connecting piece for prefabricated directly-buried thermal insulation pipe

Abstract

The utility model relates to the technical field of prefabricated direct burial thermal insulation pipes, and discloses a connecting piece for prefabricated direct burial thermal insulation pipes, which comprises an inner pipe, the left end and the right end of the inner pipe close to the edge are fixedly connected with retainers, the middle parts of the two retainers are rotatably connected with a plurality of balls which are uniformly distributed, and the balls are arranged in the inner pipe. Rotating blocks are arranged on the outer sides of the two retainers, rolling grooves are formed in the two rotating blocks, clamping blocks are fixedly connected to the front sides and the rear sides of the ends, away from each other, of the two rotating blocks, connectors are connected to the ends, away from each other, of the two clamping blocks in a clamped mode, and rotating grooves are formed in the middles of the two connectors. According to the utility model, through the cooperation of the holder, the rotating block, the clamping block and the connector, the angle of the clamping block can be adjusted, the clamping block can clamp the connector more conveniently, meanwhile, the connector can be prevented from falling off, and through the cooperation of the movable ring, the connecting block, the supporting rod and the bolt, the height of the fixed end of the telescopic rod can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated direct-buried thermal insulation pipes, in particular to a connecting piece used for prefabricated direct-buried thermal insulation pipes. Background Art

[0002] With the continuous growth of global energy demand, the rational use and conservation of energy has become the focus of attention of governments around the world. In the fields of urban heating and industrial pipelines, traditional insulation methods often have problems such as poor insulation effect, large heat loss, and complex construction. The emergence of prefabricated direct-buried insulation pipes has largely solved these problems. It can effectively reduce heat loss, improve the insulation effect of pipelines, reduce energy consumption, and conform to the social development trend of energy conservation and emission reduction.

[0003] After searching, the Chinese patent announcement number: CN215981468U discloses a prefabricated direct-buried insulated pipe including an insulated pipe body and a connection structure at both end faces. A flow-conducting hole is arranged in the middle of the insulated pipe body, and the flow-conducting hole is arranged with a heat-conducting inner pipe and a protective outer pipe from the inside to the outside in sequence; the connection structure is a connecting piece on one side, and a connecting part on the other side; the connecting piece is connected to the insulated pipe body through a first fixed plate, and the connecting part is connected to the insulated pipe body through a second fixed plate. The prefabricated direct-buried insulated pipe of the utility model has a good insulation function, and ensures the stability of the connection of each group of insulated pipe bodies, and is more convenient and quick to use. However, the device is difficult to disassemble and assemble in the assembled state, which is not convenient for construction personnel to quickly assemble and disassemble for maintenance, reducing the efficiency of construction. At the same time, the device does not yet have a fixed structure, and excessively long pipes are prone to damage at the connection end due to their own gravity. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a connector for prefabricated direct-buried insulated pipes, aiming to improve the problem that the device in the prior art is difficult to disassemble and assemble in a combined state, which is inconvenient for construction personnel to quickly assemble and disassemble for maintenance, reducing the construction efficiency. At the same time, the device does not yet have a fixed structure, and an excessively long pipe is prone to damage at the connection end due to its own gravity.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a connecting piece for prefabricated direct-buried thermal insulation pipes, comprising an inner tube, wherein both left and right ends of the inner tube are fixedly connected with retaining frames near the edge, and the middle parts of the two retaining frames are rotatably connected with a plurality of evenly distributed balls, and the outer sides of the two retaining frames are provided with rotating blocks, and the interiors of the two rotating blocks are provided with rolling grooves, and the two rotating blocks are fixedly connected with clamping blocks on the front and rear sides away from one end of the two rotating blocks, and the two clamping blocks are clamped with connecting heads on the ends away from one end, and the middle parts of the two connecting heads are provided with rotating grooves, and the middle parts of the two rotating grooves are provided with sliding grooves on the front and rear sides, and the top and bottom sides of the adjacent ends of the two rotating grooves are provided with limiting grooves, and the left and right sides of the inner tube are fixedly connected with baffles, and the adjacent sides of the two baffles are fixedly connected with the outer tube, and fixing mechanisms are provided on the left and right ends of the outer side of the middle part of the outer tube.

[0006] Through the above technical solution: flexible rotation of multiple rotating blocks can be achieved.

[0007] As a further description of the above technical solution:

[0008] The fixing mechanism includes two movable rings, the inner side walls of the two movable rings are slidably connected to the outer side of the middle part of the outer tube, the middle parts of the bottom ends of the two movable rings are fixedly connected with connecting blocks, the middle parts of the two connecting blocks are provided with a plurality of evenly distributed limiting holes, the insides of the two limiting holes are slidably connected with support rods, the middle upper ends of the two support rods are provided with docking holes, the bottom ends of the two connecting blocks are fixedly connected with the bottom plate, and the insides of the two docking holes are slidably connected with pins.

[0009] Through the above technical solution: the height of the support rod can be adjusted.

[0010] As a further description of the above technical solution:

[0011] The outer sides of the plurality of balls are rotatably connected to the inner side wall of the rolling groove, and the ends of the two connecting heads which are far away from each other are fixedly connected to the external pipe.

[0012] Through the above technical solution: the friction between the rotating block and the retaining frame can be reduced.

[0013] As a further description of the above technical solution:

[0014] The outer sides of the plurality of clamping blocks are all rotatably connected to the inner side wall of the rotating groove, and the adjacent ends of the plurality of clamping blocks are all slidably connected to the inner side of the sliding groove.

[0015] Through the above technical solution: the connector can be prevented from slipping by the clamping block.

[0016] As a further description of the above technical solution:

[0017] The upper and lower ends of the two rotating blocks are fixedly connected with sleeves on the side away from each other, the interiors of the multiple sleeves are fixedly connected with first springs, the other ends of the multiple first springs are fixedly connected with movable blocks, the middle parts of the multiple movable blocks are fixedly connected with connecting rods on the ends away from each other, the ends of the multiple connecting rods are fixedly connected with top plates on the ends away from each other, and the adjacent sides of the multiple top plates are fixedly connected with second springs.

[0018] Through the above technical solution: the connector can be pushed to move toward both ends, so that the clamping block can be firmly clamped in the limiting groove.

[0019] As a further description of the above technical solution:

[0020] The outer sides of the plurality of movable blocks are all slidably connected to the inner side wall of the sleeve, and the adjacent sides of the plurality of second springs are all fixedly connected to the middle of the farthest end of the sleeve.

[0021] Through the above technical solution: the top plate can be ensured to always be in close contact with the adjacent end of the connector by the movement of the movable block.

[0022] As a further description of the above technical solution:

[0023] A heat-insulating layer is arranged in the middle of the inner tube, and a plurality of evenly distributed support plates are fixedly connected to the outer side of the middle of the inner tube.

[0024] Through the above technical solution: it can be ensured that the temperature is within a constant range.

[0025] The utility model has the following beneficial effects:

[0026] 1. In the utility model, through the cooperation of the retaining frame, the ball and the rotating block, the rotating block can be rotated to adjust the angle of the clamping block, which can facilitate the clamping block to be more conveniently connected to the connecting head. At the same time, through the cooperation of the clamping block, the connecting head, the rotating groove and the limiting groove, the rotating block can slide into the limiting groove after rotating in the rotating groove, thereby effectively preventing the connecting head from falling off and improving the practicality of the device.

[0027] 2. In the utility model, the connection end can be fixed on the surface of an object through the cooperation of the movable ring, the connection block, the support rod and the bottom plate, thereby preventing the connection end of the excessively long pipe from being damaged due to its own gravity. At the same time, the height of the fixed end of the telescopic rod can be adjusted through the cooperation of the limit hole, the docking hole and the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional diagram of a connector for prefabricated direct-buried thermal insulation pipes proposed in the utility model;

[0029] Figure 2 This is a cross-sectional view of the outer pipe of the connector for prefabricated direct buried thermal insulation pipes proposed by the utility model;

[0030] Figure 3 A cross-sectional view of a sleeve of a connector for prefabricated direct buried thermal insulation pipes proposed in the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the support plate of the connector for prefabricated direct buried thermal insulation pipes proposed in the utility model;

[0032] Figure 5 This is a structural schematic diagram of a connecting block of a connecting piece for prefabricated direct-buried thermal insulation pipes proposed in the utility model.

[0033] Legend:

[0034] 1. Inner tube; 2. Cage; 3. Ball; 4. Rotating block; 5. Rolling groove; 6. Fixing mechanism; 601. Movable ring; 602. Connecting block; 603. Limiting hole; 604. Support rod; 605. Docking hole; 606. Bottom plate; 607. Latch; 7. Block; 8. Connecting head; 9. Rotating groove; 10. Slide groove; 11. Limiting groove; 12. External tube; 13. Baffle; 14. External tube; 15. Sleeve; 16. First spring; 17. Movable block; 18. Connecting rod; 19. Top plate; 20. Second spring; 21. Insulation layer; 22. Support plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Reference Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: a connector for prefabricated direct-buried thermal insulation pipes, comprising an inner pipe 1, both left and right ends of the inner pipe 1 are fixedly connected with retaining frames 2 near the edges, the middle parts of the two retaining frames 2 are rotatably connected with a plurality of evenly distributed balls 3, the outer sides of the two retaining frames 2 are provided with rotating blocks 4, the interiors of the two rotating blocks 4 are provided with rolling grooves 5, the front and rear sides of the two rotating blocks 4 away from one end are fixedly connected with clamping blocks 7, the ends of the two clamping blocks 7 away from one end are clamped with connecting heads 8, the middle parts of the two connecting heads 8 are provided with rotating grooves 9, the front and rear sides of the middle parts of the two rotating grooves 9 are provided with sliding grooves 10, and the two rotating grooves 9 are adjacent to each other. Limiting grooves 11 are provided on both sides of the top and bottom of the end, baffles 13 are fixedly connected on the left and right sides of the inner tube 1, and the adjacent sides of the two baffles 13 are fixedly connected to the outer tube 14, and the left and right ends of the middle outer side of the outer tube 14 are provided with fixing mechanisms 6; the outer sides of the multiple balls 3 are rotatably connected to the inner side wall of the rolling groove 5, and the two connectors 8 are fixedly connected to the outer tube 12 at one end away from each other; the outer sides of the multiple clamping blocks 7 are rotatably connected to the inner side wall of the rotating groove 9, and the adjacent ends of the multiple clamping blocks 7 are slidably connected to the inner side of the sliding groove 10; the middle part of the inner tube 1 is provided with a heat-insulating layer 21, and the middle outer side of the inner tube 1 is fixedly connected to multiple evenly distributed support plates 22;

[0037] Specifically, an insulation layer 21 is provided in the middle of the inner tube 1. The insulation layer 21 is made of insulation material with excellent insulation performance, which can effectively reduce heat loss and maintain temperature stability. In order to enhance the stability and load-bearing capacity of the inner tube 1, a plurality of evenly distributed support plates 22 are fixedly connected to the outer side of the middle part of the inner tube 1. These support plates 22 are made of strong and durable materials, can withstand greater pressure and weight, and ensure the stability and safety of the inner tube 1 during use.

[0038] Reference Figure 1 and Figure 5 The fixing mechanism 6 includes two movable rings 601, the inner side walls of the two movable rings 601 are slidably connected to the outer side of the middle part of the outer tube 14, the middle parts of the bottom ends of the two movable rings 601 are fixedly connected with a connecting block 602, the middle parts of the two connecting blocks 602 are provided with a plurality of evenly distributed limiting holes 603, the insides of the two limiting holes 603 are slidably connected with a support rod 604, the middle upper ends of the two support rods 604 are provided with a docking hole 605, the bottom ends of the two connecting blocks 602 are fixedly connected with a bottom plate 606, and the insides of the two docking holes 605 are slidably connected with a latch 607;

[0039] Specifically, a plurality of evenly distributed limiting holes 603 are provided in the middle of the two connecting blocks 602, which not only increase the stability of the structure, but also provide sliding space for the support rods 604, thereby ensuring the rigidity and durability of the entire structure. At the same time, docking holes 605 are provided at the upper ends of the middle parts of the two support rods 604, and the pins 607 slidingly connected inside the docking holes 605 fix the height of the support rods 604. In addition, the bottom end of each connecting block 602 is fixedly connected to a base plate 606, which not only increases the stability of the entire structure, but also provides a larger contact area, thereby further enhancing the bearing capacity of the structure.

[0040] Reference Figure 2 and Figure 3 The upper and lower ends of the two rotating blocks 4 on the side away from each other are fixedly connected with sleeves 15, the interiors of the multiple sleeves 15 are fixedly connected with first springs 16, the other ends of the multiple first springs 16 are fixedly connected with movable blocks 17, the middle parts of the multiple movable blocks 17 on the side away from each other are fixedly connected with connecting rods 18, the ends of the multiple connecting rods 18 on the side away from each other are fixedly connected with top plates 19, and the adjacent sides of the multiple top plates 19 are fixedly connected with second springs 20; the outer sides of the multiple movable blocks 17 are slidably connected to the inner side wall of the sleeves 15, and the adjacent sides of the multiple second springs 20 are fixedly connected to the middle part of the end away from each other of the sleeves 15;

[0041] Specifically, the first springs 16 are fixedly connected inside the multiple sleeves 15, the other ends of the multiple first springs 16 are fixedly connected to the movable blocks 17, and the connecting rods 18 are fixedly connected to the middle parts of the ends away from the multiple movable blocks 17. When the connecting rods 18 are squeezed, the movable blocks 17 can be moved to ensure that the top plate 19 fixedly connected to the end away from the connecting rods 18 is always in contact with the connecting head 9.

[0042] Working principle: When the device needs to be used to connect two prefabricated direct-buried insulated pipes, first rotate the rotating blocks 4 set on the outside of the two retainers 2, and the retainers 2 are fixedly connected through the positions near the edges of the left and right ends of the inner tube 1. The retainers 2 are made of high-strength materials and have good wear resistance and corrosion resistance, ensuring the stability and service life of the entire device. The middle part of the retainer 2 is rotatably connected to multiple evenly distributed balls 3 through a special structural design. These balls 3 can roll along the surface of the inner tube 1 under the rotation of the retainer 2, effectively reducing the friction between the inner tube 1 and the rotating block 4, and improving the rotation flexibility of the device. This design not only simplifies the structure of the device and improves its stability and reliability, but also minimizes the friction generated by the entire device during operation and extends its service life. At the same time, the evenly distributed balls 3 and the tightly matched rotating blocks 4 jointly ensure the transmission accuracy and movement stability of the device, so that it can perform well in various complex environments. When the two rotating blocks 4 are away from each other, the block 7 fixedly connected on both the front and rear sides of one end is aligned with the slide groove 10 opened on both the front and rear sides of the middle of the two rotating grooves 9, the block 7 rotates in the rotating groove 9 and falls into the limiting groove 11, thereby completing the connection of the two prefabricated direct-buried thermal insulation pipes.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connector for prefabricated direct buried thermal insulation pipe, comprising an inner pipe (1), characterized in that: The left and right ends of the inner tube (1) are fixedly connected to retaining frames (2) near the edges, the middle parts of the two retaining frames (2) are rotatably connected to a plurality of evenly distributed balls (3), the outer sides of the two retaining frames (2) are provided with rotating blocks (4), the interiors of the two rotating blocks (4) are provided with rolling grooves (5), the front and rear sides of the two rotating blocks (4) are fixedly connected to the ends away from each other, and the ends of the two rotating blocks (7) are clamped with connectors (8) ), a rotation groove (9) is provided in the middle of the two connecting heads (8), a slide groove (10) is provided on both the front and rear sides of the middle of the two rotation grooves (9), a limiting groove (11) is provided on both the top and bottom sides of the adjacent ends of the two rotation grooves (9), a baffle (13) is fixedly connected to the left and right sides of the inner tube (1), an outer tube (14) is fixedly connected to the adjacent side of the two baffles (13), and a fixing mechanism (6) is provided on both the left and right ends of the outer side of the middle of the outer tube (14).

2. The connector for prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: The fixing mechanism (6) comprises two movable rings (601), the inner side walls of the two movable rings (601) are slidably connected to the outer side of the middle part of the outer tube (14), the middle parts of the bottom ends of the two movable rings (601) are fixedly connected to a connecting block (602), the middle parts of the two connecting blocks (602) are provided with a plurality of evenly distributed limiting holes (603), the insides of the two limiting holes (603) are slidably connected to a supporting rod (604), the middle upper ends of the two supporting rods (604) are provided with a docking hole (605), the bottom ends of the two connecting blocks (602) are fixedly connected to a bottom plate (606), and the insides of the two docking holes (605) are slidably connected to a latch pin (607).

3. The connector for prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: The outer sides of the plurality of balls (3) are rotatably connected to the inner side wall of the rolling groove (5), and the two connecting heads (8) are fixedly connected to an external pipe (12) at the ends away from each other.

4. The connector for prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: The outer sides of the plurality of clamping blocks (7) are all rotatably connected to the inner side wall of the rotating groove (9), and the adjacent ends of the plurality of clamping blocks (7) are all slidably connected to the inner side of the sliding groove (10).

5. The connector for prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: The upper and lower ends of the two rotating blocks (4) are fixedly connected with sleeves (15), the interiors of the plurality of sleeves (15) are fixedly connected with first springs (16), the other ends of the plurality of first springs (16) are fixedly connected with movable blocks (17), the middle parts of the plurality of movable blocks (17) are fixedly connected with connecting rods (18), the ends of the plurality of connecting rods (18) are fixedly connected with top plates (19), and the adjacent sides of the plurality of top plates (19) are fixedly connected with second springs (20).

6. The connector for prefabricated direct buried thermal insulation pipe according to claim 5, characterized in that: The outer sides of the plurality of movable blocks (17) are slidably connected to the inner wall of the sleeve (15), and the adjacent sides of the plurality of second springs (20) are fixedly connected to the middle of the sleeve (15) at the far end.

7. The connector for prefabricated direct buried thermal insulation pipe according to claim 1, characterized in that: A heat-insulating layer (21) is provided in the middle of the inner tube (1), and a plurality of evenly distributed support plates (22) are fixedly connected to the outer side of the middle of the inner tube (1).

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