High-temperature-resistant PP air pipe

Abstract

The utility model relates to the technical field of PP air pipes, and discloses a high-temperature-resistant PP air pipe which comprises a pipe body, an installation opening is formed in the front side of the left end of the pipe body, a filter plate is arranged at the position, located at the installation opening, of the interior of the pipe body, and a movable sleeve for blocking the installation opening is arranged outside the pipe body. Sealing rings are arranged at the positions, located on the left side and the right side of the mounting opening, of the exterior of the pipe body, the outer walls of the sealing rings are tightly matched with the inner wall of the movable sleeve, a first fixing ring is fixedly connected to the exterior of the left end of the pipe body, and an opening is formed in the outer side of the first fixing ring. According to the utility model, the movable sleeve moves left and right outside the pipe body, so that the mounting port can be exposed or sealed, the filter plate in the pipe body can be conveniently replaced or cleaned, the movable sleeve drives the hook to rotate and hook the first fixing ring, and when the movable sleeve drives the hook to rotate, the bolt pin can be driven to move and gradually align with the bolt hole, so that the filter plate can be conveniently replaced or cleaned. The spring pushes the bolt pin to be inserted into the bolt hole, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of PP duct technology, and in particular to a high-temperature resistant PP duct. Background Technology

[0002] Polypropylene pipes, also known as PP ducts, are generally used as ventilation ducts for air transport and circulation, and are commonly used in shopping malls, hotels, office buildings, and other areas. However, after prolonged use, PP ducts are prone to accumulating impurities, dust, cobwebs, and other debris on their inner walls, which will eventually affect air circulation.

[0003] While existing air ducts can filter the air passing through by installing internal filters at the air inlet to prevent dust from adhering to the inner walls, these filters need to be replaced or cleaned regularly. This makes disassembling the connected ducts cumbersome and inconvenient for cleaning the filters. Cleaning by motor-driven cleaning methods is structurally complex and equally difficult to repair if a fault occurs. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies by proposing a high-temperature resistant PP duct that allows for convenient and quick replacement of the filter plate.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-temperature resistant PP duct includes a duct body with an installation port on the front left side. A filter plate is installed inside the duct body at the installation port. A movable sleeve is installed outside the duct body to seal the installation port. Sealing rings are installed on both the left and right sides of the installation port on the outside of the duct body, with the outer wall of the sealing ring tightly fitting against the inner wall of the movable sleeve. A first fixing ring is fixedly connected to the outside of the left end of the duct body, with an opening on its outer side. A second fixing ring is fixedly connected to the right end of the movable sleeve, with a hook fixedly connected to the left side of the second fixing ring for engaging with the first fixing ring. A limit assembly is provided on the outside of the movable sleeve.

[0007] Furthermore, a first stop block is fixedly connected to the left side of the first fixing ring at the opening position, and a second stop block is fixedly connected to the left side of the first fixing ring.

[0008] Furthermore, the limiting assembly includes a ring body fixedly connected to the outside of the movable sleeve, a limiting rod fixedly connected to the left side of the ring body, the left end of the limiting rod fixedly connected to the inside of the second fixed ring, a movable ring that slides left and right on the outside of the limiting rod, a spring located on the right side of the movable ring on the outside of the limiting rod, and a pin fixedly connected to the left side of the movable ring, the left end of the pin penetrating the inside of the second fixed ring.

[0009] Furthermore, the first fixing ring is provided with bolt holes around its perimeter for engaging with the pin.

[0010] Furthermore, a handle is fixedly connected to the right external end of the movable sleeve.

[0011] Furthermore, the tube body has a slot inside.

[0012] Furthermore, an arc-shaped sealing plate is movably provided on the outer side of the filter plate, and arc-shaped strips are fixedly connected to both the left and right sides of the filter plate, with the outer wall of the arc-shaped strips movably disposed inside the slot.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the installation port can be exposed or sealed by the movable sleeve that moves left and right on the outside of the tube body, thereby facilitating the replacement or cleaning of the filter plate inside the tube body.

[0015] 2. In this utility model, the movable sleeve drives the hook to move to the left, passing through the opening. The movable sleeve drives the hook to rotate and hook the first fixed ring. When the movable sleeve drives the hook to rotate, it can drive the pin to move and gradually align with the pin hole. Thus, the spring pushes the pin to insert into the pin hole, thereby restricting the movable sleeve. The operation is simple and convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a high-temperature resistant PP duct proposed in this utility model.

[0017] Figure 2 This is a schematic diagram of a high-temperature resistant PP duct filter screen proposed in this utility model.

[0018] Figure 3 A schematic diagram of the arc-shaped strip of a high-temperature resistant PP air duct proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of a spring in a high-temperature resistant PP duct proposed in this utility model.

[0020] Legend:

[0021] 1. Pipe body; 2. Mounting port; 3. Filter plate; 4. Movable sleeve; 5. Sealing ring; 6. First fixing ring; 7. Opening; 8. Second fixing ring; 9. Hook; 10. Ring body; 11. Limiting rod; 12. Spring; 13. Movable ring; 14. Pin; 15. Pin hole; 16. First stop block; 17. Second stop block; 18. Handle; 19. Slot; 20. Arc-shaped strip; 21. Arc-shaped sealing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3 This utility model provides an embodiment of a high-temperature resistant PP duct, comprising a duct body 1, an installation port 2 at the front left end of the duct body 1, a filter plate 3 inside the duct body 1 located at the installation port 2, a movable sleeve 4 sealing the installation port 2 on the outside of the duct body 1, sealing rings 5 ​​on both the left and right sides of the duct body 1 located at the installation port 2, the outer wall of the sealing ring 5 tightly fitting the inner wall of the movable sleeve 4, a first fixing ring 6 fixedly connected to the outside of the left end of the duct body 1, an opening 7 on the outer side of the first fixing ring 6, and a fixed right end of the movable sleeve 4. A second fixing ring 8 is connected, and a hook 9 for cooperating with the first fixing ring 6 is fixedly connected to the left side of the second fixing ring 8. A first stop 16 is fixedly connected to the left side of the first fixing ring 6 at the position of the opening 7. A second stop 17 is fixedly connected to the left side of the first fixing ring 6. A handle 18 is fixedly connected to the outside of the right end of the movable sleeve 4. A slot 19 is provided inside the tube body 1. An arc-shaped sealing plate 21 is movably provided on the outside of the filter plate 3. Arc-shaped strips 20 are fixedly connected to both the left and right sides of the filter plate 3. The outer wall of the arc-shaped strips 20 is movably provided inside the slot 19.

[0024] When installing the filter plate 3 of the high-temperature resistant PP duct, the filter plate 3 is first pre-treated. By rotating it, the arc-shaped strip 20 is retracted into the arc-shaped sealing plate 21. This is done to expose the portion of the filter plate 3 without the arc-shaped strip 20, allowing the filter plate 3 to smoothly insert into the slot 19 inside the duct body 1. By rotating the filter plate 3 again, the arc-shaped strip 20 is rotated out of the arc-shaped sealing plate 21 and accurately connected inside the slot 19. The cooperation between the arc-shaped strip 20 and the slot 19 forms a stable limiting structure, ensuring that the filter plate 3 can stably perform its filtering function inside the duct body 1, effectively intercepting impurities and particles that may exist in the duct, and ensuring the cleanliness of the airflow passing through the duct. (Push to the left) The movable sleeve 4, with its right end fixedly connected to the hook 9, moves to the left along with it. Since the first fixed ring 6 has an opening 7 on its outer side, the hook 9 can pass through the opening 7. At this time, the second fixed ring 8 is in close contact with the first fixed ring 6. The handle 18 drives the movable sleeve 4 to rotate. The handle 18 makes it easier for the operator to apply force, improving the convenience of operation. The rotation of the movable sleeve 4 causes the hook 9 to be misaligned with the opening 7, thereby restricting the movable sleeve 4 and preventing it from moving to the right. At this time, the outer wall of the arc-shaped sealing plate 21 is in close contact with the inner wall of the movable sleeve 4, thereby preventing air from passing through the gaps and affecting the filtration effect.

[0025] Reference Figure 1 , Figure 2 and Figure 4 The movable sleeve 4 is fixedly connected to a ring body 10. A limit rod 11 is fixedly connected to the left side of the ring body 10. The left end of the limit rod 11 is fixedly connected to the inside of the second fixed ring 8. A movable ring 13 that slides left and right is provided outside the limit rod 11. A spring 12 is provided outside the limit rod 11 on the right side of the movable ring 13. A pin 14 is fixedly connected to the left side of the movable ring 13. The left end of the pin 14 passes through the inside of the second fixed ring 8. The first fixed ring 6 is provided with bolt holes 15 around its perimeter for engaging with the pin 14.

[0026] As the movable sleeve 4 moves to the left, the second fixing ring 8 gradually comes into close contact with the first fixing ring 6. During this process, the pin 14 will press against the first fixing ring 6. Due to the resistance, the pin 14 will push the movable ring 13, which is fixedly connected to it, to move to the right, while compressing the spring 12. The spring 12 stores elastic potential energy during the compression process, providing power for subsequent fixing. As the movable sleeve 4 continues to rotate, the pin 14 gradually aligns with the pin holes 15 around the first fixing ring 6. When the pin 14 is completely aligned with the pin holes 15, the previously compressed spring 12 releases its elastic potential energy, pushing the movable ring 13 and the pin 14 to the left, thereby allowing the pin 14 to be accurately inserted into the pin holes 15. In this way, the second fixing ring 8 and the first fixing ring 6 are firmly fixed together by the cooperation of the pin 14 and the bolt hole 15. At the same time, the movable sleeve 4 also stably seals the installation port 2. In addition, the sealing rings 5 ​​located on the left and right sides of the installation port 2 on the outside of the pipe body 1 fit tightly with the inner wall of the movable sleeve 4, further enhancing the sealing performance at the installation port 2 and effectively preventing the leakage of high-temperature gas in the air duct. When it is necessary to replace the filter plate 3 or maintain the inside of the air duct, the operation can be reversed. First, by pulling the movable ring 13 outward, the pin 14 is pulled out of the bolt hole 15, at which time the spring 12 is compressed again. Then, by using the handle 18 to drive the movable sleeve 4 to rotate in the opposite direction, the hook 9 is aligned with the opening 7. Then, the movable sleeve 4 is pulled to the right, causing the hook 9 to disengage from the opening 7, thereby pushing the movable sleeve 4 to the right and exposing the installation port 2, making it convenient to replace or clean the filter plate 3.

[0027] Working principle: By rotating, the arc-shaped strip 20 is retracted into the arc-shaped sealing plate 21, exposing the part of the filter plate 3 without the arc-shaped strip 20. Then, the filter plate 3 is inserted into the inside of the slot 19, and by rotating, the arc-shaped strip 20 is connected to the inside of the slot 19 to prevent the filter plate 3 from falling off. Pushing the movable sleeve 4 to the left causes the hook 9 to move to the left, so that it passes through the opening 7. Then, the handle 18 drives the movable sleeve 4 to rotate, so that the slot 19 is tightly attached to the second stop 17. After the second fixed ring 8 is tightly attached to the first fixed ring 6, the pin 14 abuts against the first fixed ring 6, thereby pushing the movable ring 13 to the right and compressing the spring 12. As the movable sleeve 4 rotates, the set pin 14 gradually aligns with the pin hole 15. When the pin 14 aligns with the pin hole 15, the compressed spring 12 pushes the movable ring 13 and the pin 14 to the left, so that the pin 14 is inserted into the pin hole 15.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature resistant PP duct, characterized in that, The tube includes a tube body (1), with an installation port (2) on the front left side of the tube body (1). A filter plate (3) is installed inside the tube body (1) at the installation port (2). A movable sleeve (4) is installed outside the tube body (1) to block the installation port (2). Sealing rings (5) are installed on both the left and right sides of the tube body (1) at the installation port (2). The outer wall of the sealing ring (5) is tightly fitted with the inner wall of the movable sleeve (4). A first fixing ring (6) is fixedly connected to the outer left side of the tube body (1). An opening (7) is provided on the outer side of the first fixing ring (6). A second fixing ring (8) is fixedly connected to the right side of the movable sleeve (4). A hook (9) for cooperating with the first fixing ring (6) is fixedly connected to the left side of the second fixing ring (8). A limit component is provided outside the movable sleeve (4).

2. The high-temperature resistant PP duct according to claim 1, characterized in that: A first stop (16) is fixedly connected to the left side of the first fixing ring (6) at the position of the opening (7), and a second stop (17) is fixedly connected to the left side of the first fixing ring (6).

3. The high-temperature resistant PP duct according to claim 1, characterized in that: The limiting assembly includes a ring (10) fixedly connected to the outside of the movable sleeve (4). A limiting rod (11) is fixedly connected to the left side of the ring (10). The left end of the limiting rod (11) is fixedly connected to the inside of the second fixed ring (8). A movable ring (13) that slides left and right is provided outside the limiting rod (11). A spring (12) is provided outside the limiting rod (11) on the right side of the movable ring (13). A pin (14) is fixedly connected to the left side of the movable ring (13). The left end of the pin (14) passes through the inside of the second fixed ring (8).

4. The high-temperature resistant PP duct according to claim 1, characterized in that: The first fixing ring (6) has bolt holes (15) around its perimeter for engaging with the pin (14).

5. The high-temperature resistant PP duct according to claim 1, characterized in that: The right end of the movable sleeve (4) is fixedly connected to a handle (18).

6. The high-temperature resistant PP duct according to claim 1, characterized in that: The tube body (1) has a slot (19) inside.

7. The high-temperature resistant PP duct according to claim 1, characterized in that: An arc-shaped sealing plate (21) is movably provided on the outer side of the filter plate (3), and an arc-shaped strip (20) is fixedly connected to both the left and right sides of the filter plate (3). The outer wall of the arc-shaped strip (20) is movably provided inside the slot (19).

Images