PVC ventilating duct

Abstract

The utility model relates to the technical field of ventilation pipelines, in particular to a PVC ventilation pipeline which comprises a PVC pipe A and a PVC pipe B. The outer portion of the PVC pipe A is in threaded connection with a fixing sleeve A, the surface of the PVC pipe A is provided with a threaded groove A enabling the fixing sleeve A to move, the outer portion of the PVC pipe B is in threaded connection with a fixing sleeve B, the surface of the PVC pipe B is provided with a threaded groove B enabling the fixing sleeve B to move, and the threaded groove A and the threaded groove B are in threaded connection. Supporting plates are symmetrically connected to the outer portion of the fixing sleeve B through screws, a connecting sleeve is fixed to the ends, away from the fixing sleeve B, of the supporting plates through screws, and a filter screen for filtering ventilated gas is fixed to the inner side of the connecting sleeve through screws; through the arrangement of the fixing sleeve A, the fixing sleeve B, the threaded groove A, the threaded sleeve B, the ring sleeve, the connecting sleeve, the supporting plate, the rubber ring A and the rubber ring B, the problems that when an existing PVC ventilation pipeline is used, splicing treatment is inconvenient to conduct on ventilation PVC pipes, and meanwhile the PVC pipes and a filter screen are inconvenient to detach and clean are solved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically to a PVC ventilation duct. Background Technology

[0002] PVC ventilation ducts are ventilation ducts made of polyvinyl chloride material. They are mainly used in building ventilation systems. They have good corrosion resistance to a variety of chemicals and can resist corrosion from acid, alkali and salt solutions. They are suitable for various chemical environments. At the same time, they have high rigidity and hardness, can withstand greater external pressure, and have good impact resistance and anti-aging properties.

[0003] However, existing PVC ventilation ducts typically connect two PVC pipes using heat fusion or bolts. When some PVC pipes are damaged, it takes a significant amount of time to disassemble the replacement pipes, making the process cumbersome and impacting the efficiency of PVC pipe installation and disassembly. Furthermore, when using filters to filter the ventilation air, some debris remains on the PVC pipe near the filter. Cleaning this requires disassembling the PVC pipe and the screws on the filter, separating the PVC pipe from the filter, which is labor-intensive and affects the cleaning of debris residue on the filter and PVC pipe. Therefore, a new type of PVC ventilation duct needs to be installed. Utility Model Content

[0004] The main purpose of this utility model is to provide a PVC ventilation duct. This utility model solves the problems of inconvenience in splicing PVC ventilation pipes and disassembling and cleaning PVC pipes and filters during use by setting a fixed sleeve A, a fixed sleeve B, a threaded groove A, a threaded sleeve B, a ring sleeve, a connecting sleeve, a support plate, a rubber ring A, and a rubber ring B.

[0005] The technical solution adopted by this utility model to solve its technical problem is a PVC ventilation duct, including PVC pipe A and PVC pipe B. PVC pipe A is externally threaded to a fixing sleeve A, and a threaded groove A is formed on the surface of PVC pipe A to allow the fixing sleeve A to move. PVC pipe B is externally threaded to a fixing sleeve B, and a threaded groove B is formed on the surface of PVC pipe B to allow the fixing sleeve B to move. A support plate is symmetrically screwed to the outside of the fixing sleeve B, and a connecting sleeve is screwed to the end of the support plate away from the fixing sleeve B. A filter screen for filtering ventilated gas is screwed to the inside of the connecting sleeve. The fixing sleeve A has an internal thread. A ring is integrally formed on the outside of the fixing sleeve B, and an external thread is formed on the surface of the ring to connect with the internal thread. A circular groove is formed on the surface of the end of PVC pipe A. A circular block is integrally formed at the end of PVC pipe B to enter the circular groove. Rubber rings B to increase sealing are glued to the ends of both PVC pipe A and PVC pipe B. A rubber ring A connected to the fixing sleeve B is glued to one side of the fixing sleeve A.

[0006] By adopting the above technical solution, when splicing PVC pipe A and PVC pipe B, the fixing sleeve A is placed outside PVC pipe A, and then the fixing sleeve A rotates to the end of PVC pipe A through the threaded groove A opened on the surface of PVC pipe A. Subsequently, the circular block at the end of PVC pipe B is placed into the circular groove opened at the end of PVC pipe A. The rubber ring B on PVC pipe A and PVC pipe B increases the sealing between PVC pipe A and PVC pipe B. Then, the fixing sleeve B is placed outside PVC pipe B, and then the fixing sleeve B rotates through the threaded groove B opened on the surface of PVC pipe B. Subsequently, the ring on the fixing sleeve B enters the interior of the fixing sleeve A, and the external thread outside the ring connects with the internal thread inside the fixing sleeve A. Subsequently, the rubber ring A outside the fixing sleeve A is tightly connected to the fixing sleeve B, thereby facilitating the splicing of PVC pipe A and PVC pipe B.

[0007] When the fixing sleeve B connects PVC pipe B to PVC pipe A, the support plate outside the fixing sleeve B moves the connecting sleeve, and then the connecting sleeve is locked on the outside of PVC pipe B, so that the filter screen inside the connecting sleeve is fixed at the end of PVC pipe B, which facilitates the filtration of the ventilation gas and makes it easy to disassemble and clean the filter screen and PVC pipe B.

[0008] Specifically, a sealing ring that connects to the outside of the PVC pipe B is bonded inside the connecting sleeve.

[0009] By adopting the above technical solution, when the connecting sleeve is connected to PVC pipe B, the sealing ring inside the connecting sleeve contacts PVC pipe B, thereby improving the sealing performance between the connecting sleeve and PVC pipe B.

[0010] Specifically, both the fixed sleeve A and the fixed sleeve B are symmetrically welded with fixed rods that drive the fixed sleeve A and the fixed sleeve B to rotate respectively.

[0011] By adopting the above technical solution, when it is necessary to rotate the fixed sleeve A and the fixed sleeve B, the fixed rods outside the fixed sleeve A and the fixed sleeve B are pulled respectively, which makes it easier to rotate the fixed sleeve A and the fixed sleeve B.

[0012] Specifically, the fixing rod is secured with a rubber sleeve that increases friction via external screws.

[0013] By adopting the above technical solution, when the fixed rod needs to be rotated, the rubber sleeve outside the fixed rod increases the friction on the surface of the fixed rod, thus preventing slippage when rotating the fixed rod.

[0014] Specifically, the inner dimensions of the circular groove match the outer dimensions of the circular block.

[0015] By adopting the above technical solution, when the circular block on PVC pipe B enters the circular groove on PVC pipe A, the inner side of the circular groove matches the outer side of the circular block, which facilitates the connection between PVC pipe A and PVC pipe B.

[0016] The beneficial effects of this utility model are:

[0017] (1) In the PVC ventilation duct of this utility model, when PVC pipe A and PVC pipe B are to be spliced, the fixing sleeve A is placed outside PVC pipe A, and then the fixing sleeve A is rotated to the end of PVC pipe A through the threaded groove A opened on the surface of PVC pipe A. Then, the circular block at the end of PVC pipe B is placed into the circular groove opened at the end of PVC pipe A. The rubber ring B on PVC pipe A and PVC pipe B increases the sealing between PVC pipe A and PVC pipe B. Then, the fixing sleeve B is placed outside PVC pipe B, and then the fixing sleeve B is rotated through the threaded groove B opened on the surface of PVC pipe B. Then, the ring on the fixing sleeve B enters the interior of the fixing sleeve A. The external thread outside the ring is connected to the internal thread inside the fixing sleeve A. Then, the rubber ring A outside the fixing sleeve A is tightly connected to the fixing sleeve B, thereby facilitating the splicing of PVC pipe A and PVC pipe B.

[0018] (2) In the PVC ventilation duct described in this utility model, when the fixed sleeve B drives the PVC pipe B to connect with the PVC pipe A, the support plate outside the fixed sleeve B drives the connecting sleeve to move, and then the connecting sleeve is stuck outside the PVC pipe B, so that the filter screen inside the connecting sleeve is fixed at the end of the PVC pipe B, thereby facilitating the filtration of the ventilation gas, and thus facilitating the disassembly and cleaning of the filter screen and the PVC pipe B. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of a PVC ventilation duct according to the present invention;

[0021] Figure 2 This is an exploded structural diagram of a PVC ventilation duct according to the present invention.

[0022] Figure 3 This is a schematic diagram of a partial structure A of a PVC ventilation duct according to the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of a connecting sleeve for a PVC ventilation duct according to the present invention.

[0024] In the diagram: 1. PVC pipe A; 2. Fixing sleeve A; 3. Fixing sleeve B; 4. Threaded groove B; 5. Connecting sleeve; 6. Filter screen; 7. Support plate; 8. PVC pipe B; 9. Fixing rod; 10. Rubber sleeve; 11. Rubber ring A; 12. Internal thread; 13. Rubber ring B; 14. Circular groove; 15. Ring sleeve; 16. External thread; 17. Circular block; 18. Threaded groove A; 19. Sealing ring. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In order to splice PVC pipe A1 and PVC pipe 8, as an embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the PVC ventilation duct of this utility model includes a PVC pipe A1 and a PVC pipe B8. A fixing sleeve A2 is threadedly connected to the outside of the PVC pipe A1, and a threaded groove A18 is formed on the surface of the PVC pipe A1 to allow the fixing sleeve A2 to move. A fixing sleeve B3 is threadedly connected to the outside of the PVC pipe B8, and a threaded groove B4 is formed on the surface of the PVC pipe B8 to allow the fixing sleeve B3 to move. A support plate 7 is symmetrically screwed to the outside of the fixing sleeve B3, and a connecting sleeve 5 is screwed to the end of the support plate 7 away from the fixing sleeve B3. A screw is fixed to the inner side of the connecting sleeve 5. The filter screen 6 for filtering the ventilated gas has an internal thread 12 on the inner side of the fixed sleeve A2, and an annular sleeve 15 integrally formed on the outside of the fixed sleeve B3. The annular sleeve 15 has an external thread 16 on its surface that connects to the internal thread 12. A circular groove 14 is formed on the surface of the end of the PVC pipe A1. A circular block 17 is integrally formed at the end of the PVC pipe B8 that enters the circular groove 14. Rubber rings B13 to increase sealing are glued to the ends of both the PVC pipe A1 and the PVC pipe B8. A rubber ring A11 connected to the fixed sleeve B3 is glued to one side of the fixed sleeve A2.

[0027] When using PVC pipe A1 and PVC pipe B8, the fixing sleeve A2 is placed outside PVC pipe A1. The fixing sleeve A2 then rotates through the threaded groove A18 on the surface of PVC pipe A1 to the end of PVC pipe A1. Subsequently, the circular block 17 at the end of PVC pipe B8 is placed into the circular groove 14 at the end of PVC pipe A1. The rubber ring B13 on PVC pipe A1 and PVC pipe B8 increases the sealing between PVC pipe A1 and PVC pipe B8. Then, the fixing sleeve B3 is placed outside PVC pipe B8. The fixing sleeve B3 rotates through the threaded groove B4 on the surface of PVC pipe B8. Subsequently, the ring 15 on the fixing sleeve B3 enters the interior of the fixing sleeve A2. The external thread 16 on the outside of the ring 15 connects with the internal thread 12 inside the fixing sleeve A2. Then, the rubber ring A11 on the outside of the fixing sleeve A2 is tightly connected to the fixing sleeve B3, thus facilitating the splicing of PVC pipe A1 and PVC pipe B8.

[0028] When the fixing sleeve B3 drives the PVC pipe B8 to connect with the PVC pipe A1, the support plate 7 outside the fixing sleeve B3 drives the connecting sleeve 5 to move. Then the connecting sleeve 5 is locked outside the PVC pipe B8, so that the filter screen 6 inside the connecting sleeve 5 is fixed at the end of the PVC pipe B8, which facilitates the filtration of the ventilation gas and makes it easy to disassemble and clean the filter screen 6 and the PVC pipe B8.

[0029] To improve the sealing between the connecting sleeve 5 and the PVC pipe B8, for example, such as Figure 4 As shown, the present invention also includes a sealing ring 19 that is bonded inside the connecting sleeve 5 to the outside of the PVC pipe B8.

[0030] When in use, when the connecting sleeve 5 is connected to the PVC pipe B8, the sealing ring 19 inside the connecting sleeve 5 comes into contact with the PVC pipe B8, thereby improving the sealing performance between the connecting sleeve 5 and the PVC pipe B8.

[0031] To rotate the retaining sleeve A2 and retaining sleeve B3, for example, as follows: Figure 1 As shown, the present invention also includes fixing rods 9 that are symmetrically welded to the outside of both the fixing sleeve A2 and the fixing sleeve B3, respectively driving the fixing sleeve A2 and the fixing sleeve B3 to rotate.

[0032] When in use, to rotate the fixed sleeve A2 and the fixed sleeve B3, pull the fixed rod 9 outside the fixed sleeve A2 and the fixed sleeve B3 respectively, so as to facilitate the rotation of the fixed sleeve A2 and the fixed sleeve B3.

[0033] To prevent slippage when rotating the fixed rod 9, for example, such as Figure 1 As shown, the present invention also includes a rubber sleeve 10 for increasing friction, which is fixed to the outside of the fixing rod 9 by external screws.

[0034] When in use, when the fixing rod 9 is to be rotated, the rubber sleeve 10 outside the fixing rod 9 increases the friction on the surface of the fixing rod 9 to prevent slippage when the fixing rod 9 is rotated.

[0035] To facilitate the connection of PVC pipe A1 and PVC pipe B8, for example, as follows: Figure 3 As shown, the present invention also includes a feature that the inner dimensions of the circular groove 14 match the outer dimensions of the circular block 17.

[0036] When in use, when the circular block 17 on PVC pipe B8 enters the circular groove 14 on PVC pipe A1, the inner side of the circular groove 14 matches the outer side of the circular block 17, which facilitates the connection between PVC pipe A1 and PVC pipe B8.

[0037] When using this utility model, to splice PVC pipe A1 and PVC pipe B8, the fixing sleeve A2 is placed outside PVC pipe A1, and then the fixing sleeve A2 rotates to the end of PVC pipe A1 through the threaded groove A18 on the surface of PVC pipe A1. Then, the circular block 17 at the end of PVC pipe B8 is placed into the circular groove 14 at the end of PVC pipe A1. The rubber ring B13 on PVC pipe A1 and PVC pipe B8 increases the sealing between PVC pipe A1 and PVC pipe B8. Then, the fixing sleeve B3 is placed outside PVC pipe B8, and then the fixing sleeve B3 rotates through the threaded groove B4 on the surface of PVC pipe B8. Then, the ring 15 on the fixing sleeve B3 enters the interior of the fixing sleeve A2. The external thread 16 on the outside of the ring 15 connects with the internal thread 12 inside the fixing sleeve A2. Then, the rubber ring A11 on the outside of the fixing sleeve A2 is tightly connected to the fixing sleeve B3, thereby facilitating the splicing of PVC pipe A1 and PVC pipe B8.

[0038] When the fixed sleeve B3 drives the PVC pipe B8 to connect with the PVC pipe A1, the support plate 7 outside the fixed sleeve B3 drives the connecting sleeve 5 to move. Then the connecting sleeve 5 is stuck outside the PVC pipe B8, so that the filter screen 6 inside the connecting sleeve 5 is fixed at the end of the PVC pipe B8, which facilitates the filtration of the ventilation gas and makes it easy to disassemble and clean the filter screen 6 and the PVC pipe B8.

[0039] When the connecting sleeve 5 is connected to the PVC pipe B8, the sealing ring 19 inside the connecting sleeve 5 comes into contact with the PVC pipe B8, thereby improving the sealing performance between the connecting sleeve 5 and the PVC pipe B8.

[0040] When it is necessary to rotate the fixed sleeve A2 and the fixed sleeve B3, pull the fixed rod 9 outside the fixed sleeve A2 and the fixed sleeve B3 respectively, so as to facilitate the rotation of the fixed sleeve A2 and the fixed sleeve B3;

[0041] When the fixed rod 9 is to be rotated, the rubber sleeve 10 outside the fixed rod 9 increases the friction on the surface of the fixed rod 9 to prevent slippage when the fixed rod 9 is rotated;

[0042] When the circular block 17 on PVC pipe B8 enters the circular groove 14 on PVC pipe A1, the inner side of the circular groove 14 matches the outer side of the circular block 17, which facilitates the connection between PVC pipe A1 and PVC pipe B8.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A PVC ventilation duct, characterized in that, The system includes PVC pipe A (1) and PVC pipe B (8). PVC pipe A (1) is externally threaded to a fixing sleeve A (2), and the surface of PVC pipe A (1) has a threaded groove A (18) for moving the fixing sleeve A (2). PVC pipe B (8) is externally threaded to a fixing sleeve B (3), and the surface of PVC pipe B (8) has a threaded groove B (4) for moving the fixing sleeve B (3). The fixing sleeve B (3) is symmetrically screwed to a support plate (7), and a connecting sleeve (5) is screwed to the end of the support plate (7) away from the fixing sleeve B (3). A filter screen for filtering ventilated gas is screwed to the inside of the connecting sleeve (5). (6) The inner side of the fixed sleeve A (2) is provided with an internal thread (12), the outer side of the fixed sleeve B (3) is integrally formed with a ring (15), and the surface of the ring (15) is provided with an external thread (16) that connects with the internal thread (12). The end surface of the PVC pipe A (1) is provided with a circular groove (14), the end of the PVC pipe B (8) is integrally formed with a circular block (17) that enters the circular groove (14), the ends of the PVC pipe A (1) and the PVC pipe B (8) are both bonded with rubber rings B (13) to increase sealing, and the side of the fixed sleeve A (2) is bonded with a rubber ring A (11) that connects with the fixed sleeve B (3).

2. A PVC ventilation duct according to claim 1, characterized in that, The connecting sleeve (5) has a sealing ring (19) bonded inside to the outside of the PVC pipe B (8).

3. A PVC ventilation duct according to claim 1, characterized in that, The fixed sleeves A (2) and B (3) are symmetrically welded with fixed rods (9) that drive the fixed sleeves A (2) and B (3) to rotate respectively.

4. A PVC ventilation duct according to claim 3, characterized in that, The fixing rod (9) is externally screwed with a rubber sleeve (10) to increase friction.

5. A PVC ventilation duct according to claim 1, characterized in that, The inner dimensions of the circular groove (14) match the outer dimensions of the circular block (17).

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