Pre-heat-insulation inner connecting pipe of spiral air pipe

Abstract

The utility model relates to the technical field of spiral air pipes, in particular to a spiral air pipe pre-heat-insulation inner connecting pipe which comprises a spiral exhaust pipe. The spiral exhaust pipe comprises a spiral exhaust pipe body, an outer penetrating hole, a hook-and-loop fastener rough surface, an inner connecting pipe, an inner penetrating hole, a rubber wind shield, a connecting pin and a hook-and-loop fastener adhesive tape, the outer penetrating hole is formed in the front side of the left end of the spiral exhaust pipe body, the hook-and-loop fastener rough surface is arranged at the position, corresponding to the outer penetrating hole, of the front side of the left end of the spiral exhaust pipe body, and the inner connecting pipe is arranged in the spiral exhaust pipe body. Inner through holes are formed in the front side, corresponding to the outer through holes, of the left end of the periphery of the inner connecting pipe, and a rubber wind shield is arranged on the left side in the inner connecting pipe; the connecting pin is rotated to drive the rubber wind shield to rotate, the angle of the rubber wind shield is selectively rotated according to the exhaust flow speed, and after the rubber wind shield is rotated to a specified angle, the hook-and-loop fastener adhesive tape is adhered to the hook-and-loop fastener rough surface, so that the angle of the rubber wind shield is fixed; the function of adjusting the air flow is achieved.

Description

Technical Field

[0001] This utility model relates to the field of spiral duct technology, and in particular to the pre-insulated inner pipe of spiral duct. Background Technology

[0002] Spiral ducts are mainly used to connect two locations for air circulation, serving a ventilation function. They are particularly prevalent in ship ventilation systems to ensure airflow. However, existing spiral duct connection structures are quite complex, making installation inconvenient and inefficient.

[0003] Common spiral duct pre-insulated inner pipes only include the function of multi-pipe connection, which can splice multiple inner pipes into a single pipe body, but lack the function of adjusting airflow. They cannot guarantee precise control of exhaust airflow, and when the exhaust airflow is too large, it can cause the entire pipe body to shake, affecting the stability of the pipe body.

[0004] Therefore, in response to the problem that when the system exhaust volume exceeds the limit, the airflow impact force of the pre-insulated inner pipe of the spiral duct breaks through the rigidity threshold of the duct structure, causing duct resonance and displacement, which affects the overall structural stability, it is urgent to design a new type of pre-insulated inner pipe for spiral ducts. Utility Model Content

[0005] To overcome the common problem of pre-insulated inner pipes in spiral ducts, when the system exhaust volume exceeds the limit, the airflow impact force breaks through the rigidity threshold of the duct structure, causing duct resonance and displacement, which affects the overall structural stability.

[0006] The technical solution of this utility model is as follows: a pre-insulated inner pipe for a spiral duct includes a spiral exhaust duct; it also includes an external perforation, a Velcro surface, an inner connecting pipe, an internal perforation, a rubber baffle, a connecting pin, and a Velcro strip. An external perforation is provided on the front side of the left end of the spiral exhaust duct, and a Velcro surface is provided on the front side of the left end of the spiral exhaust duct corresponding to the external perforation. An inner connecting pipe is provided inside the spiral exhaust duct, and an internal perforation is provided on the front side of the left end of the inner connecting pipe corresponding to the external perforation. A rubber baffle is provided on the left side inside the inner connecting pipe, and a connecting pin is provided on the front side of the rubber baffle corresponding to the internal and external perforations. The front end of the connecting pin passes through the internal and external perforations and is located outside the spiral exhaust duct. A Velcro strip is provided on the upper side of the connecting pin corresponding to the Velcro surface.

[0007] Preferably, the rubber baffle is rotated by rotating the connecting pin. The angle of the rubber baffle is selectively rotated according to the exhaust air velocity. After the rubber baffle is rotated to the specified angle, the Velcro strip is attached to the Velcro rough side to fix the angle of the rubber baffle. This realizes the function of adjusting the air flow. This solves the problem of common spiral duct pre-insulated inner pipes, which only have the function of multi-pipe connection and can splice multiple inner pipes into a pipe body, but lack the function of adjusting the air flow. They cannot guarantee the precise control of the exhaust air flow. When the exhaust air flow is too large, it will cause the entire pipe body to shake, affecting the stability of the pipe body.

[0008] Preferably, the hook and loop fastener is attached to the spiral exhaust pipe with epoxy resin adhesive, and the hook and loop fastener strip is attached to the hook and loop fastener.

[0009] Preferably, the right end of the spiral exhaust duct is provided with an external connecting pipe head, the outer diameter of which is smaller than the inner diameter of the spiral exhaust duct.

[0010] Preferably, a connecting clamp is fitted on the left end of the spiral exhaust duct, corresponding to the position of the external connecting pipe head.

[0011] Preferably, connecting blocks are symmetrically arranged at both ends of the connecting hoop, and the two connecting blocks are fixed by bolts.

[0012] Preferably, the right end of the inner connecting pipe is provided with an inner pipe head, which is located inside the outer connecting pipe head.

[0013] Preferably, two locking blocks are symmetrically arranged at the upper and lower ends of the inner pipe head, and two locking slots are symmetrically opened at the upper and lower ends of the left side of the inner connecting pipe corresponding to the positions of the locking blocks.

[0014] The beneficial effects of this utility model are:

[0015] 1. This device drives the rubber baffle to deflect around the axis by rotating the connecting pin. The opening and closing angle of the baffle is adjusted according to the exhaust airflow speed requirements. After positioning, the baffle posture is fixed by the directional bonding of the Velcro strip and the Velcro surface, forming an adjustable wind resistance structure. The cross-sectional area of ​​the air duct is precisely controlled through a combination of mechanical linkage and flexible locking mechanism, so as to realize the functions of adaptive airflow adjustment and dynamic airflow balance. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the pre-insulated inner pipe of the spiral duct of this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the spiral duct structure of the pre-insulated inner pipe of the present invention.

[0018] Figure 3The diagram shown is a schematic representation of the internal connecting pipe structure of the pre-insulated inner pipe of the spiral duct of this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the rubber baffle plate structure of the pre-insulated inner pipe of the spiral duct of this utility model.

[0020] Figure 5 The diagram shown is a schematic of the connecting hoop structure of the pre-insulated inner pipe of the spiral duct of this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Spiral exhaust duct; 2. External perforation; 3. Velcro surface; 4. Internal connecting pipe; 5. Internal perforation; 6. Rubber baffle; 7. Connecting pin; 8. Velcro strip; 9. External connecting pipe end; 10. Connecting clamp; 11. Connecting block; 12. Internal pipe end; 13. Locking block; 14. Locking groove. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment of a pre-insulated inner pipe for a spiral duct, including a spiral exhaust pipe 1; it also includes an external perforation 2, a Velcro surface 3, an inner connecting pipe 4, an internal perforation 5, a rubber baffle 6, a connecting pin 7, and a Velcro strip 8. An external perforation 2 is provided on the front side of the left end of the spiral exhaust pipe 1, and a Velcro surface 3 is provided on the front side of the left end of the spiral exhaust pipe 1 corresponding to the external perforation 2. An inner connecting pipe 4 is provided inside the spiral exhaust pipe 1, and an internal perforation 5 is provided on the front side of the left end of the inner connecting pipe 4 corresponding to the external perforation 2. A rubber baffle 6 is provided on the left side inside the inner connecting pipe 4, and a connecting pin 7 is provided on the front side of the rubber baffle 6 corresponding to the internal perforation 5 and the external perforation 2. The front end of the connecting pin 7 passes through the internal perforation 5 and the external perforation 2 and is positioned... On the outside of the spiral exhaust duct 1, a Velcro strip 8 is provided on the upper side of the connecting pin 7 corresponding to the Velcro surface 3. By rotating the connecting pin 7, the rubber baffle 6 is rotated. The angle of the rubber baffle 6 is selectively rotated according to the exhaust air velocity. After the rubber baffle 6 is rotated to the specified angle, the Velcro strip 8 is attached to the Velcro surface 3 to fix the angle of the rubber baffle 6, thus realizing the function of adjusting the airflow. This solves the problem of common spiral duct pre-insulated inner pipes, which only have the function of multi-pipe connection and can splice multiple inner pipes into a pipe body, but lack the function of adjusting the airflow. They cannot guarantee precise control of the exhaust airflow and are prone to the problem of the entire pipe body shaking when the exhaust airflow is too large, affecting the stability of the pipe body.

[0024] Please see Figures 2-5In this embodiment, connecting blocks 11 are symmetrically arranged at both ends of the connecting clamp 10, and the two connecting blocks 11 are fixed by bolts. An inner pipe head 12 is provided at the right end of the inner connecting pipe 4. The inner pipe head 12 is located inside the outer connecting pipe head 9. Two locking blocks 13 are symmetrically arranged at the upper and lower ends of the inner pipe head 12. Two locking slots 14 are symmetrically opened at the upper and lower ends of the left side of the inner connecting pipe 4, corresponding to the positions of the locking blocks 13. When the two spiral exhaust pipes 1 are connected, the outer connecting pipe head 9 of the first spiral exhaust pipe 1 is inserted into the interior of the second spiral exhaust pipe 1. At this time, the inner pipe head 12 inside the first spiral exhaust pipe 1 will be inserted into the second spiral exhaust pipe 1. Inside the inner connecting pipe 4 inside the spiral exhaust pipe 1, when the inner pipe head 12 inside the first spiral exhaust pipe 1 is inserted into the inner connecting pipe 4 inside the second spiral exhaust pipe 1, the locking block 13 on the inner pipe head 12 will be squeezed by the inner connecting pipe 4 until the position of the locking block 13 moves to the locking groove 14 of the inner connecting pipe 4. Then, the locking block 13 will be locked into the inside of the locking groove 14 due to its own elasticity, thus connecting the two inner connecting pipes 4 together. Then, the connecting clamp 10 is fitted on the left side of the second spiral exhaust pipe 1, and the two connecting blocks 11 are connected by bolts, thus connecting the two spiral exhaust pipes 1 together.

[0025] Please see Figures 1-5 In this embodiment, the hook and loop fastener 3 is adhered to the spiral exhaust pipe 1 with epoxy resin adhesive, and the hook and loop fastener strip 8 is adhered to the hook and loop fastener 3. An external connecting pipe head 9 is provided at the right end of the spiral exhaust pipe 1. The outer diameter of the external connecting pipe head 9 is smaller than the inner diameter of the spiral exhaust pipe 1. A connecting clamp 10 is fitted on the left end of the spiral exhaust pipe 1 corresponding to the position of the external connecting pipe head 9. When exhausting, the flow rate needs to be controlled according to the exhaust flow rate. At this time, the rubber baffle 6 is rotated by rotating the connecting pin 7. The angle of the rubber baffle 6 is selectively rotated according to the exhaust flow rate. After the rubber baffle 6 is rotated to the specified angle, the hook and loop fastener strip 8 is adhered to the hook and loop fastener 3 to fix the angle of the rubber baffle 6. This realizes the function of adjusting the airflow and prevents the entire pipe from shaking when the exhaust flow rate is too large, which would affect the stability of the pipe.

[0026] During operation, when the two spiral exhaust pipes 1 are connected, the outer connecting pipe head 9 of the first spiral exhaust pipe 1 is inserted into the interior of the second spiral exhaust pipe 1. At this time, the inner connecting pipe head 12 of the first spiral exhaust pipe 1 is inserted into the interior connecting pipe 4 of the second spiral exhaust pipe 1. When the inner connecting pipe head 12 of the first spiral exhaust pipe 1 is inserted into the interior connecting pipe 4 of the second spiral exhaust pipe 1, the locking block 13 on the inner connecting pipe head 12 is squeezed by the interior connecting pipe 4 until the position of the locking block 13 moves to the locking groove 14 of the interior connecting pipe 4. Then, the locking block 13 will lock into the interior of the locking groove 14 due to its own elasticity. This makes... Two internal connecting pipes 4 are connected together. Then, the connecting clamp 10 is fitted onto the left side of the second spiral exhaust pipe 1. The two connecting blocks 11 are then connected by bolts, thus connecting the two spiral exhaust pipes 1 together. When exhausting air, the airflow rate needs to be controlled according to the airflow velocity. At this time, the rubber baffle 6 is rotated by rotating the connecting pin 7. The angle of the rubber baffle 6 is selectively rotated according to the airflow velocity. After the rubber baffle 6 is rotated to the specified angle, the Velcro strip 8 is attached to the Velcro rough side 3 to fix the angle of the rubber baffle 6, thus realizing the function of adjusting the airflow.

[0027] Through the above steps, the rubber baffle 6 is rotated by rotating the connecting pin 7. The angle of the rubber baffle 6 is selectively rotated according to the exhaust air velocity. After the rubber baffle 6 is rotated to the specified angle, the Velcro strip 8 is attached to the Velcro rough side 3 to fix the angle of the rubber baffle 6, thus realizing the function of adjusting the airflow. This solves the problem that common spiral duct pre-insulated inner pipes only have the function of multi-pipe connection, which can splice multiple inner pipes into a pipe body, but lack the function of adjusting the airflow. It cannot guarantee the precise control of the exhaust airflow, and when the exhaust airflow is too large, it will cause the entire pipe body to shake, affecting the stability of the pipe body.

Claims

1. A pre-insulated inner pipe for a spiral duct, comprising a spiral exhaust duct (1); characterized in that: It also includes an external perforation (2), a hook and loop fastener (3), an internal connecting tube (4), an internal perforation (5), a rubber baffle (6), a connecting pin (7), and a hook and loop fastener (8). The spiral exhaust pipe (1) has an external perforation (2) on the front side of its left end. The spiral exhaust pipe (1) has a hook and loop fastener (3) on the front side of its left end corresponding to the external perforation (2). The spiral exhaust pipe (1) has an internal connecting tube (4) inside. The front side of the left end of the internal connecting tube (4) has a hook and loop fastener (3) on its front side. An inner perforation (5) is provided at the position corresponding to the outer perforation (2). A rubber baffle (6) is provided on the left side inside the inner connecting pipe (4). A connecting pin (7) is provided on the front side of the rubber baffle (6) at the position corresponding to the inner perforation (5) and the outer perforation (2). The front end of the connecting pin (7) passes through the inner perforation (5) and the outer perforation (2) and is placed outside the spiral exhaust pipe (1). A hook and loop fastener (8) is provided on the upper side of the connecting pin (7) at the position corresponding to the hook and loop fastener (3).

2. The pre-insulated inner pipe of the spiral duct according to claim 1, characterized in that: The hook and loop fastener (3) is attached to the spiral exhaust pipe (1) with epoxy resin adhesive, and the hook and loop fastener strip (8) is attached to the hook and loop fastener (3).

3. The pre-insulated inner pipe of the spiral duct according to claim 1, characterized in that: An external connecting pipe head (9) is provided at the right end of the spiral exhaust pipe (1), and the outer diameter of the external connecting pipe head (9) is smaller than the inner diameter of the spiral exhaust pipe (1).

4. The pre-insulated inner pipe of the spiral duct according to claim 3, characterized in that: A connecting clamp (10) is fitted on the left end of the spiral exhaust pipe (1) corresponding to the position of the external connecting pipe head (9).

5. The pre-insulated inner pipe of the spiral duct according to claim 4, characterized in that: Connecting blocks (11) are symmetrically arranged at both ends of the connecting hoop (10), and the two connecting blocks (11) are fixed by bolts.

6. The pre-insulated inner pipe of the spiral duct according to claim 1, characterized in that: An inner pipe head (12) is provided at the right end of the inner connecting pipe (4), and the inner pipe head (12) is located inside the outer connecting pipe head (9).

7. The pre-insulated inner pipe of the spiral duct according to claim 6, characterized in that: Two locking blocks (13) are symmetrically arranged at the upper and lower ends of the inner pipe head (12), and two locking slots (14) are symmetrically opened at the upper and lower ends of the left side of the inner connecting pipe (4) corresponding to the positions of the locking blocks (13).

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