Heat preservation structure of heating and ventilation pipe
By designing a HVAC insulation structure including a protective shell, an insulation layer and a fixture, the problems of insufficient insulation performance, high maintenance cost and unstable structure in the prior art are solved, and efficient insulation effect and convenient maintenance process are achieved.
Patent Information
- Application Number
- CN202422353923.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The insulation structure of the existing HVAC pipes is insufficient in low temperature environments, resulting in fluid freezing, aging of insulation materials, high maintenance costs, and unstable structure of the rapid inspection and replacement device, which is prone to loosening or falling off.
An insulation structure including a first protective case, a second protective case, an insulation layer and a connecting plate is designed, and the protection case is quickly installed and disassembled through a fixing device and a reinforcement mechanism, and the stability and accuracy of the insulation layer are improved through a deformable elastic material and a convex groove structure.
It effectively improves the insulation performance of HVAC, ensures normal operation in low temperature environments, simplifies the inspection and replacement of insulation layer, reduces maintenance costs, and improves the stability and reliability of the structure.
Smart Images
Figure CN222977746U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of the heat preservation structure of heating and ventilation pipes, and more specifically, it relates to a heat preservation structure of heating and ventilation pipes. Background Art
[0002] In the existing technology, there are some problems with the heat preservation structure of heating and ventilation pipes, which may have adverse effects under specific usage conditions. First of all, in an environment with a relatively low temperature, the fluid inside the heating and ventilation pipe is prone to freezing. This is mainly because the existing heat preservation performance of the heating and ventilation pipe structure is insufficient and cannot effectively prevent heat loss. This situation will not only affect the normal operation of the pipeline, but may also cause pipeline damage, increasing maintenance costs and downtime.
[0003] Secondly, in order to improve the heat preservation performance, some equipment in the existing technology uses a protective shell to wrap the heat preservation layer. This design can indeed enhance the heat preservation effect to a certain extent. However, over time, the heat preservation material will be affected by factors such as temperature changes and chemical corrosion, gradually aging, thereby reducing its heat preservation performance. According to the maintenance plan of the pipeline system, it is necessary to regularly inspect the heat preservation layer and consider replacement when aging, damage or a decline in heat preservation performance is found. However, the installation and disassembly operations of the protective shell are usually rather cumbersome and require professional personnel and special tools. This not only increases the maintenance cost, but also makes it inconvenient to quickly inspect and replace the heat preservation layer, thus affecting the maintenance efficiency and normal operation of the pipeline system.
[0004] In addition, in order to solve the above problems, some equipment uses some devices designed to achieve rapid inspection and replacement of the heat preservation layer. Although these devices pursue convenience in concept, their structures are often too simple and the mechanisms are not perfect in actual applications. This simplified design may lead to low structural stability and is easily affected by external factors, resulting in the loosening or even falling off of the fixing device. When the protective shell is not installed firmly enough, it will not only affect the heat preservation effect, but may also cause additional damage to the pipeline system, reducing the service life of the equipment and increasing potential safety hazards. Summary of the Utility Model
[0005] (1) Technical Problems to be Solved
[0006] In view of the problems existing in the existing technology, the utility model provides a heat preservation structure of heating and ventilation pipes to solve the technical problems mentioned in the background art.
[0007] (2) Technical Solutions
[0008] To achieve the above object, the present utility model provides the following technical solution: a heat preservation structure for a heating and ventilation pipe, including a heating and ventilation pipe, characterized in that: a heat preservation device is provided outside the heating and ventilation pipe, and the heat preservation device includes a first protective shell, a second protective shell, a heat preservation layer and a connecting plate. The first protective shell and the second protective shell are both sleeved outside the heat preservation layer, the connecting plate is connected to the outside of the first protective shell and the second protective shell, the heat preservation layer is sleeved outside the heating and ventilation pipe, and a fixing device is provided on one side of the connecting plate. The fixing device includes a splicing sleeve, a splicing rod, a connecting sleeve, a connecting block, a straight groove and a rotating groove. The splicing sleeve is detachably sleeved outside the splicing rod, the connecting block is connected to the outside of the splicing rod, the straight groove and the rotating groove are both opened inside the splicing sleeve, and the connecting sleeve is detachably installed outside the splicing sleeve by threads. A reinforcing mechanism is provided on the outside of the splicing sleeve, and the reinforcing mechanism includes a matching sleeve, a fixing plate, a limiting rod, a limiting sleeve and an unlocking groove. The matching sleeve is rotatably sleeved outside the splicing sleeve, the fixing plate is fixedly connected to the outside of the connecting sleeve, the limiting rod is slidably installed on the matching sleeve, the limiting sleeve is slidably sleeved outside the splicing sleeve, and the unlocking groove is opened on the fixing plate.
[0009] The present utility model is further provided such that a push spring is sleeved outside the limiting rod.
[0010] The present utility model is further provided such that a slide rail is provided on the outside of the splicing sleeve, a sliding groove is opened on the inside of the limiting sleeve, and the sliding groove is adapted to the slide rail. The slide rail and the sliding groove play a role in guiding and limiting the splicing sleeve.
[0011] The present utility model is further provided such that rubber strips are provided on the outside of both the limiting sleeve and the matching sleeve, and the setting of the rubber strips improves the operation feel.
[0012] The present utility model is further provided such that a matching groove is opened on the outside of the splicing rod, a conical spring is connected to the outside of the splicing sleeve, the other end of the conical spring is connected with a matching rod, the matching rod is slidably installed on the side wall of the splicing sleeve, and one end of the matching rod is inserted into the matching groove.
[0013] The present utility model is further provided such that a convex ring is provided on the outside of the heating and ventilation pipe, a groove is opened on the inside of the heat preservation layer, and the groove is adapted to the convex ring. The setting of the groove and the convex ring makes the installation of the heat preservation layer more tight and accurate.
[0014] The present utility model is further provided such that a clamping groove is opened on the inside of the first protective shell, a clamping block is provided on the inside of the second protective shell, and the clamping block is clamped in the clamping groove. The setting of the clamping groove and the clamping block makes the connection between the first protective shell and the second protective shell more tight.
[0015] The utility model is further configured such that one end of the HVAC pipe is connected with a threaded pipe, and a threaded groove is provided at one end of the HVAC pipe. The threaded groove is adapted to the size of the threaded pipe. The threaded pipe and the threaded groove enable the splicing part of the HVAC pipe to be thermally insulated and protected as well.
[0016] (III) Beneficial effects
[0017] Compared with the prior art, the utility model provides a thermal insulation structure for an HVAC pipe, which has the following
[0018] beneficial effects:
[0019] 1. The thermal insulation device includes a first protective shell, a second protective shell and a thermal insulation layer. These components together form an effective thermal insulation structure. The first protective shell and the second protective shell are sleeved outside the thermal insulation layer, which not only enhances the mechanical strength of the thermal insulation layer, but also improves its weather resistance and corrosion resistance. The thermal insulation layer itself is made of a deformable elastic material, which can closely fit outside the HVAC pipe, effectively preventing heat loss and ensuring the normal operation of the pipeline system in a low-temperature environment.
[0020] 2. The fixing device includes components such as a splicing sleeve, a splicing rod, a connecting sleeve, a connecting block, a straight groove and a rotating groove. They together achieve the rapid installation and disassembly of the protective shell. The splicing sleeve is detachably sleeved outside the splicing rod, and the connecting block is connected to the outside of the splicing rod. The straight groove and the rotating groove enable the splicing rod and the splicing sleeve to be firmly fixed on the connecting plate. This design simplifies the installation process, improves the maintenance efficiency, and makes the inspection and replacement of the thermal insulation layer more convenient.
[0021] 3. The reinforcement mechanism includes components such as a mating sleeve, a fixing plate, a limiting rod, a limiting sleeve and an unlocking groove. They enhance the structural stability of the fixing device. The mating sleeve is rotatably sleeved outside the splicing sleeve, the fixing plate is fixedly connected to the outside of the connecting sleeve, and the limiting rod is slidably installed on the mating sleeve. The limiting sleeve is slidably sleeved outside the splicing sleeve and cooperates with the unlocking groove to limit the movement of the limiting rod. This design ensures the stability of the splicing rod and the splicing sleeve during the connection process, prevents loosening or falling off caused by external factors, and thus improves the reliability and durability of the entire thermal insulation structure. Description of the drawings
[0022] Figure 1 is a schematic diagram of the overall structure of a thermal insulation structure for an HVAC pipe in the utility model;
[0023] Figure 2 is Figure 1 a partial enlarged structural schematic diagram of part A in
[0024] Figure 3 is a sectional structural schematic diagram of the utility model;
[0025] Figure 4 Schematic diagram of the structure of the fixing device and the reinforcement mechanism in the present utility model;
[0026] Figure 5 Cross-sectional schematic diagram of the structure of the fixing device and the reinforcement mechanism in the present utility model;
[0027] Figure 6 is Figure 5 Partial enlarged schematic diagram of the structure at position B in;
[0028] Figure 7 Schematic diagram of the structure of the splicing rod part in the present utility model;
[0029] Figure 8 Schematic diagram of the structure of the splicing sleeve part in the present utility model.
[0030] In the figure: 1, HVAC pipe; 2, first protective shell; 3, second protective shell; 4, insulation layer; 5, connecting plate; 6, splicing sleeve; 7, splicing rod; 8, connecting sleeve; 9, connecting block; 10, straight groove; 11, rotating groove; 12, mating sleeve; 13, fixing plate; 14, limiting rod; 15, limiting sleeve; 16, unlocking groove; 17, pushing spring; 18, slide rail; 19, sliding groove; 20, rubber strip; 21, mating groove; 22, conical spring; 23, mating rod; 24, convex ring; 25, groove; 26, card slot; 27, clamping block; 28, threaded pipe; 29, threaded groove. Detailed implementation manners
[0031] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.
[0032] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.
[0033] In the present utility model, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually left and right as shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms are not used to limit the present utility model.
[0034] Please refer to Figure 1-8, a heat and ventilation pipe insulation structure, including a heat and ventilation pipe 1, characterized in that: a heat preservation device is arranged outside the heat and ventilation pipe 1, and the heat preservation device includes a first protective shell 2, a second protective shell 3, a heat preservation layer 4 and a connecting plate 5. Both the first protective shell 2 and the second protective shell 3 are sleeved outside the heat preservation layer 4, the connecting plate 5 is connected to the outside of the first protective shell 2 and the second protective shell 3, the heat preservation layer 4 is sleeved outside the heat and ventilation pipe 1, and a fixing device is arranged on one side of the connecting plate 5. The fixing device includes a splicing sleeve 6, a splicing rod 7, a connecting sleeve 8, a connecting block 9, a straight groove 10 and a rotating groove 11. The splicing sleeve 6 is detachably sleeved outside the splicing rod 7, the connecting block 9 is connected to the outside of the splicing rod 7, both the straight groove 10 and the rotating groove 11 are opened inside the splicing sleeve 6, the connecting sleeve 8 is detachably installed outside the splicing sleeve 6 by threads, and a reinforcement mechanism is arranged outside the splicing sleeve 6. The reinforcement mechanism includes a matching sleeve 12, a fixing plate 13, a limiting rod 14, a limiting sleeve 15 and an unlocking groove 16. The matching sleeve 12 is rotatably sleeved outside the splicing sleeve 6, the fixing plate 13 is fixedly connected to the outside of the connecting sleeve 8, the limiting rod 14 is slidably installed on the matching sleeve 12, the limiting sleeve 15 is slidably sleeved outside the splicing sleeve 6, and the unlocking groove 16 is opened on the fixing plate 13.
[0035] A push spring 17 is sleeved outside the limiting rod 14.
[0036] A slide rail 18 is arranged outside the splicing sleeve 6, and a slide groove 19 is opened inside the limiting sleeve 15. The slide groove 19 is adapted to the slide rail 18.
[0037] Rubber strips 20 are arranged on the outside of both the limiting sleeve 15 and the matching sleeve 12.
[0038] A matching groove 21 is opened on the outside of the splicing rod 7, a conical spring 22 is connected to the outside of the splicing sleeve 6, the other end of the conical spring 22 is connected with a matching rod 23, the matching rod 23 is slidably installed on the side wall of the splicing sleeve 6, and one end of the matching rod 23 is inserted into the matching groove 21.
[0039] In this embodiment, when it is necessary to inspect or replace the thermal insulation layer 4, first rotate the mating sleeve 12. The mating sleeve 12 will drive the limiting rod 14 to move. When one end of the limiting rod 14 corresponds to the unlocking groove 16 opened on the fixing plate 13, push the limiting sleeve 15. The limiting sleeve 15 will slide along the slide rail 18 and the chute 19. Then the limiting sleeve 15 will push the limiting rod 14 to slide on the mating sleeve 12. Then one end of the limiting rod 14 will pass through the unlocking groove 16. At the same time, the limiting sleeve 15 will cooperate with the mating sleeve 12 to squeeze the pushing spring 17 arranged outside the limiting rod 14. When the pushing spring 17 is squeezed to the limit, the outer side of the mating rod 23 loses the limit of the limiting sleeve 15. Then rotate the splicing rod 7. The splicing rod 7 will drive the multiple mating grooves 21 opened on the outside to move. Due to the rounding structure treatment at the edge of the mating groove 21 and the end of the mating rod 23, and the conical spring 22 only provides a small restoring force. Then the side wall of the mating groove 21 squeezes the end of the mating rod 23. Then one end of the mating rod 23 will slide out of the mating groove 21, and the other end of the mating rod 23 will drive the conical spring 22 to stretch. At the same time, the splicing rod 7 will drive the connecting block 9 arranged on the outside to rotate along the rotating groove 11. When the splicing rod 7 cannot rotate, the position of the connecting block 9 corresponds to the position of the straight groove 10. Then pull the splicing rod 7 and the splicing sleeve 6 to both sides respectively, and the splicing rod 7 and the splicing sleeve 6 can be removed. Then one end of the mating rod 23 is no longer limited. The conical spring 22 will drive the mating rod 23 to reset. Then remove the first protective shell 2 and the second protective shell 3, and the thermal insulation layer 4 can be comprehensively inspected or replaced. When the inspection or replacement is completed, sleeved the first protective shell 2 and the second protective shell 3 on the outside of the thermal insulation layer 4 again. Then pass the splicing rod 7 through the connecting plate 5, and then sleeve the splicing sleeve 6 on the outside of the splicing rod 7 on the other side of the connecting plate 5, and make the connecting block 9 arranged on the outside of the splicing rod 7 enter the straight groove 10. In this process, the side wall of the splicing rod 7 squeezes the end of the mating rod 23, so that the other end of the mating rod 23 drives the conical spring 22 to stretch again. When the splicing sleeve 6 and the splicing rod 7 cooperate to fix the two connecting plates 5, rotate the splicing rod 7 in the reverse direction. Then the splicing rod 7 drives the connecting block 9 to rotate and enter the rotating groove 11. When the splicing rod 7 cannot rotate, the connection between the connecting block 9 and the rotating groove 11 completely locks the splicing rod 7 into the splicing sleeve 6. Then the conical spring 22 will drive the mating rod 23 to reset, and make the other end of the mating rod 23 enter the corresponding mating groove 21. Then loosen the limiting sleeve 15, and the pushing spring 17 pushes the limiting sleeve 15 to reset along the slide rail 18 and the chute 19. Then the limiting sleeve 15 will drive the limiting rod 14 to reset. When the pushing spring 17 is completely reset, the inner wall of the limiting sleeve 15 limits the outer wall of the mating rod 23 again. Then the mating rod 23 and the mating groove 21 cooperate to limit the splicing rod 7 to prevent the splicing rod 7 from rotating. Then rotate the mating sleeve 12 to make the limiting rod 14 move to a position not corresponding to the unlocking groove 16. Then the limiting rod 14 and the fixing plate 13 cooperate to limit the limiting sleeve 15, thus ensuring stable and rapid connection.
[0040] Please refer to Figure 1-3 Figure 1-3
[0041] A clamping groove 26 is formed on the inner side of the first protective shell 2, and a clamping block 27 is arranged on the inner side of the second protective shell 3. The clamping block 27 is clamped in the clamping groove 26.
[0042] One end of the HVAC pipe 1 is connected with a threaded pipe 28, and a threaded groove 29 is formed at one end of the HVAC pipe 1. The threaded groove 29 is adapted to the threaded pipe 28 in size.
[0043] More specifically, when the device is actually used, first, the heat insulation layer 4 is sleeved on the outer side of the HVAC pipe 1. The heat insulation layer 4 is made of deformable elastic material. After the heat insulation layer 4 is completely sleeved on the outer side of the HVAC pipe 1, the multiple convex rings 24 arranged on the outer side of the HVAC pipe 1 will be successively clamped in the corresponding grooves 25 formed on the inner side of the heat insulation layer 4, thus ensuring the stability and accuracy of the installation of the heat insulation layer 4 and preventing it from shifting. Then, the first protective shell 2 is covered on the outer side of the heat insulation layer 4, and then the second protective shell 3 is covered on the outer side of the heat insulation shell from the other side, and the clamping block 27 arranged on the inner side of the second protective shell 3 is clamped in the clamping groove 26 formed on the inner side of the first protective shell 2 to ensure the accuracy of the connection between the first protective shell 2 and the second protective shell 3. Then, the connecting plates 5 arranged on the outer sides of the first protective shell 2 and the second protective shell 3 are fixed together through the fixing device. Then, when multiple HVAC pipes 1 need to be connected together, the threaded pipe 28 connected to one end of one HVAC pipe 1 is inserted into the threaded groove 29 arranged at the other end of another HVAC pipe 1, and then one of the HVAC pipes 1 is rotated to realize the connection between the HVAC pipes 1. The structural design of the threaded pipe 28 and the threaded groove 29 ensures that the connection part of the HVAC pipes 1 can also obtain a good heat insulation effect.
[0044] In summary, when the overall device is in use or operation: when it is necessary to inspect or replace the thermal insulation layer 4, first rotate the mating sleeve 12, and the mating sleeve 12 will drive the limiting rod 14 to move. When one end of the limiting rod 14 corresponds to the unlocking groove 16 opened on the fixing plate 13, push the limiting sleeve 15, and the limiting sleeve 15 will slide along the slide rail 18 and the chute 19. Then the limiting sleeve 15 will push the limiting rod 14 to slide on the mating sleeve 12. Then one end of the limiting rod 14 will pass through the unlocking groove 16. At the same time, the limiting sleeve 15 will cooperate with the mating sleeve 12 to squeeze the push spring 17 arranged outside the limiting rod 14. When the push spring 17 is squeezed to the limit, the outer side of the mating rod 23 loses the limit of the limiting sleeve 15. Then rotate the splicing rod 7, and the splicing rod 7 will drive the multiple mating grooves 21 opened on the outside to move. Due to the rounded corner structure treatment at the edge of the mating groove 21 and the end of the mating rod 23, and the conical spring 22 only provides a small restoring force, then the side wall of the mating groove 21 squeezes the end of the mating rod 23. Then one end of the mating rod 23 will slide out of the mating groove 21, and the other end of the mating rod 23 will drive the conical spring 22 to stretch. At the same time, the splicing rod 7 will drive the connecting block 9 arranged on the outside to rotate along the rotating groove 11. When the splicing rod 7 cannot rotate, the position of the connecting block 9 corresponds to the position of the straight groove 10. Then pull the splicing rod 7 and the splicing sleeve 6 to both sides respectively, and the splicing rod 7 and the splicing sleeve 6 can be removed. Then one end of the mating rod 23 is no longer limited, and the conical spring 22 will drive the mating rod 23 to reset. Then remove the first protective shell 2 and the second protective shell 3, and the thermal insulation layer 4 can be comprehensively inspected or replaced. When the inspection or replacement is completed, put the first protective shell 2 and the second protective shell 3 back on the outside of the thermal insulation layer 4. Then pass the splicing rod 7 through the connecting plate 5, and then sleeved the splicing sleeve 6 on the outside of the splicing rod 7 on the other side of the connecting plate 5, and make the connecting block 9 arranged on the outside of the splicing rod 7 enter the straight groove 10. In this process, the side wall of the splicing rod 7 squeezes the end of the mating rod 23, so that the other end of the mating rod 23 drives the conical spring 22 to stretch again. When the splicing sleeve 6 and the splicing rod 7 cooperate to fix the two connecting plates 5, rotate the splicing rod 7 in the reverse direction. Then the splicing rod 7 drives the connecting block 9 to rotate and enter the rotating groove 11. When the splicing rod 7 cannot rotate, the connection between the connecting block 9 and the rotating groove 11 completely locks the splicing rod 7 into the splicing sleeve 6. Then the conical spring 22 will drive the mating rod 23 to reset, and make the other end of the mating rod 23 enter the corresponding mating groove 21. Then loosen the limiting sleeve 15, and the push spring 17 pushes the limiting sleeve 15 to reset along the slide rail 18 and the chute 19. Then the limiting sleeve 15 will drive the limiting rod 14 to reset. When the push spring 17 is completely reset, the inner wall of the limiting sleeve 15 limits the outer wall of the mating rod 23 again. Then the mating rod 23 and the mating groove 21 cooperate to limit the splicing rod 7 to prevent the splicing rod 7 from rotating. Then rotate the mating sleeve 12 so that the limiting rod 14 moves to a position not corresponding to the unlocking groove 16. Then the limiting rod 14 and the fixing plate 13 cooperate to limit the limiting sleeve 15, thus ensuring stable and rapid connection.
[0045] When the device is actually used, the insulation layer 4 is firstly sleeved on the outside of the HVAC pipe 1. The insulation layer 4 is made of a deformable elastic material. After the insulation layer 4 is completely sleeved on the outside of the HVAC pipe 1, the multiple convex rings 24 arranged on the outside of the HVAC pipe 1 will be snapped into the corresponding grooves 25 opened on the inner side of the insulation layer 4 one by one, thereby ensuring the stability and accuracy of the installation of the insulation layer 4 and preventing it from shifting. Then, the first protective shell 2 is covered on the outside of the insulation layer 4, and the second protective shell 3 is covered on the outside of the insulation shell from the other side, and the block 27 arranged on the inner side of the second protective shell 3 is snapped into the corresponding grooves 25 opened on the inner side of the first protective shell 2. In the slot 26, the accuracy of the connection between the first protective shell 2 and the second protective shell 3 is ensured, and then the connecting plate 5 arranged on the outside of the first protective shell 2 and the second protective shell 3 is fixed together by a fixing device. Then, when multiple HVAC pipes 1 need to be connected together, the threaded pipe 28 connected to one end of one of the HVAC pipes 1 is inserted into the threaded groove 29 arranged at the other end of another HVAC pipe 1, and then one of the HVAC pipes 1 is rotated to achieve the connection between the HVAC pipes 1 and the HVAC pipes 1. The structural design of the threaded pipe 28 and the threaded groove 29 ensures that the connection of the HVAC pipe 1 can also obtain a good insulation effect.
[0046] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A heat preservation structure for a HVAC pipe, comprising a HVAC pipe (1), characterized in that: A heat preservation device is arranged on the outside of the heating pipe (1), and the heat preservation device comprises a first protective shell (2), a second protective shell (3), a heat preservation layer (4) and a connecting plate (5); the first protective shell (2) and the second protective shell (3) are sleeved on the outside of the heat preservation layer (4); the connecting plate (5) is connected to the outside of the first protective shell (2) and the second protective shell (3); the heat preservation layer (4) is sleeved on the outside of the heating pipe (1); a fixing device is arranged on one side of the connecting plate (5); the fixing device comprises a splicing sleeve (6), a splicing rod (7), a connecting sleeve (8), a connecting block (9), a straight groove (10) and a rotating groove (11); the splicing sleeve (6) is sleeved on the outside of the splicing rod (7); the connecting sleeve (8) is sleeved on the outside of the splicing rod (7); the connecting sleeve (9) is sleeved on the outside of the splicing rod (7); the connecting sleeve (10) is sleeved on the outside of the splicing rod (7); the connecting sleeve (1 ... The block (9) is connected to the outside of the splicing rod (7), the straight groove (10) and the rotating groove (11) are arranged inside the splicing sleeve (6), the connecting sleeve (8) is installed on the outside of the splicing sleeve (6), and a reinforcement mechanism is arranged on the outside of the splicing sleeve (6), the reinforcement mechanism comprises a matching sleeve (12), a fixing plate (13), a limiting rod (14), a limiting sleeve (15) and an unlocking groove (16), the matching sleeve (12) is sleeved on the outside of the splicing sleeve (6), the fixing plate (13) is connected to the outside of the connecting sleeve (8), the limiting rod (14) is installed on the matching sleeve (12), the limiting sleeve (15) is sleeved on the outside of the splicing sleeve (6), and the unlocking groove (16) is arranged on the fixing plate (13).
2. The heat preservation structure of a HVAC pipe according to claim 1 is characterized in that: A push spring (17) is sleeved on the outer side of the limiting rod (14).
3. The heat preservation structure of a HVAC pipe according to claim 2 is characterized in that: A slide rail (18) is provided on the outer side of the splicing sleeve (6), and a slide groove (19) is provided on the inner side of the limiting sleeve (15), wherein the slide groove (19) is adapted to the slide rail (18).
4. The heat preservation structure of a HVAC pipe according to claim 3 is characterized in that: The outer sides of the limiting sleeve (15) and the matching sleeve (12) are both provided with rubber strips (20).
5. The heat preservation structure of a HVAC pipe according to claim 1 is characterized in that: A matching groove (21) is provided on the outer side of the splicing rod (7), a conical spring (22) is connected to the outer side of the splicing sleeve (6), a matching rod (23) is connected to the other end of the conical spring (22), the matching rod (23) is slidably mounted on the side wall of the splicing sleeve (6), and one end of the matching rod (23) is inserted into the matching groove (21).
6. A heat preservation structure for a HVAC pipe according to any one of claims 1 to 5, characterized in that: The outer side of the HVAC pipe (1) is provided with a convex ring (24), and the inner side of the thermal insulation layer (4) is provided with a groove (25), and the groove (25) is adapted to fit the convex ring (24).
7. The heat preservation structure of a HVAC pipe according to claim 6 is characterized in that: A card slot (26) is provided on the inner side of the first protective shell (2), and a card block (27) is provided on the inner side of the second protective shell (3), wherein the card block (27) is engaged in the card slot (26).
8. The heat preservation structure of a HVAC pipe according to claim 7 is characterized in that: One end of the HVAC pipe (1) is connected to a threaded pipe (28), and one end of the HVAC pipe (1) is provided with a threaded groove (29), the threaded groove (29) being adapted in size to the threaded pipe (28).