Low-drag connection for sliding exhaust duct

Abstract

This utility model discloses a low-resistance connector for a sliding exhaust duct, specifically relating to the technical field of exhaust duct connectors. It includes an exhaust square duct with a connecting box at its top. One end of the connecting box is connected to a connecting pipe, and a first arc-shaped guide plate is fixedly connected to the inner cavity of the connecting box away from the connecting pipe. This utility model first uses a sealing belt that passes through the connecting cavity and has both ends fixed to the openings of the exhaust square duct, with the sealing belt positioned on a support bar. This allows for a sealed connection between the connecting box and the exhaust square duct. The position of the connecting box at the top of the exhaust square duct can be changed without affecting the stability of the connection. Furthermore, the first and second arc-shaped guide plates allow for a gradual change in airflow direction, avoiding increased wind resistance caused by abrupt changes in duct cross-section and right-angle turns, thereby reducing the energy consumption of the entire ventilation system and improving ventilation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust duct connectors, and more specifically, to low-resistance connectors for sliding exhaust ducts. Background Technology

[0002] Sliding exhaust ducts are a type of exhaust duct with a sliding function. The key difference between sliding exhaust ducts and ordinary exhaust ducts lies in the use of specially designed sliding connectors at their connection points, such as metal corrugated pipe connectors and rubber flexible joint connectors. These connectors allow the ducts to slide relative to each other within a certain range to adapt to various operating conditions. In factory workshops, various large pieces of equipment are often in operation, which generate a lot of heat, exhaust gas, and dust during operation. Sliding exhaust ducts can promptly remove these harmful substances to the outside, maintaining clean air and environmental safety in the workshop.

[0003] However, the existing connectors lack airflow baffles, and the airflow is easily disrupted when passing through the connectors due to factors such as changes in pipe shape and abrupt changes in cross-section. This causes the airflow to be unable to flow in the predetermined direction and path, affecting the overall ventilation effect of the exhaust system. This results in poor ventilation in certain areas of the pipe, preventing the timely removal of polluted air. At the same time, the airflow will generate noise when passing through the connectors due to changes in pipe shape and flow velocity. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a low-resistance connector for sliding exhaust ducts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-resistance connector for a sliding exhaust duct, comprising an exhaust square tube, a connecting box at the top of the exhaust square tube, a connecting pipe connected to one end of the connecting box, a first arc-shaped guide plate fixedly connected to the inner cavity of the connecting box away from the connecting pipe, and a second arc-shaped guide plate fixedly connected to the bottom side of the connecting box. Through the first and second arc-shaped guide plates, air can be guided to flow smoothly inside the connector, effectively reducing the generation of eddies and turbulence. When air enters the connecting box through the connecting pipe and flows into the connecting pipe, the first and second arc-shaped guide plates gradually change the direction of airflow, avoiding the increase in wind resistance caused by abrupt changes in the pipe cross-section and right-angle turns, thereby reducing the energy consumption of the entire ventilation system and improving ventilation efficiency. A connecting cavity is provided in the middle wall of the connecting box.

[0006] The bottom two sides of the connecting box are symmetrically fixed with locking blocks, the top two sides of the exhaust square tube are symmetrically fixed with locking strips, the top two sides of the inner cavity of the exhaust square tube are symmetrically fixed with support strips, and the top of the exhaust square tube is provided with a sealing belt. When the connecting box slides on the top of the exhaust square tube, the sealing belt can move inside the connecting cavity. The locking blocks and locking strips improve the stability of the moving of the connecting box, and the sealing belt and support strips can improve the sealing effect on the top of the exhaust square tube.

[0007] Preferably, the bottom of the connecting box is provided with a through hole, the top of the exhaust square pipe is provided with an opening, and both ends of the sealing belt are fixedly connected to the wall of the exhaust square pipe. The connecting box and the exhaust square pipe can be connected through the through hole at the bottom of the connecting box and the opening at the top of the exhaust square pipe, and the top of the exhaust square pipe on both sides of the connecting box is sealed by the sealing belt.

[0008] Preferably, the two ends of the sealing belt are located at the top of the support bar, the top of the support bar is provided with a magnetic strip and a sealing gasket, the middle of the sealing belt is provided with a reinforcing metal wire, and the sealing belt passes through the middle of the connecting cavity. By attracting the reinforcing metal wire in the middle of the sealing belt with the magnetic strip, the fit of the sealing belt at the top of the support bar can be improved, and by squeezing the sealing gasket, the sealing effect of the sealing belt on the top of the exhaust square pipe can be improved.

[0009] Preferably, the card block is attached to the card strip, the card block is located on both sides of the card strip, and the card block is set with an "L" shaped structure. By sliding the card block on the card strip, the stability of the connecting box moving on the top of the exhaust square pipe is improved.

[0010] Preferably, one end of the first arc-shaped guide plate is located on one side of the support bar, and both sides of the first arc-shaped guide plate are fixedly connected to the inner cavity wall of the connecting box. The gas entering the connecting box through the connecting pipe is guided by the first arc-shaped guide plate.

[0011] Preferably, the second arc-shaped guide plate is disposed in the middle of the exhaust square pipe, and the four sides of the second arc-shaped guide plate are provided with sealing gaskets. The three sides of the second arc-shaped guide plate are in contact with the inner cavity wall of the exhaust square pipe. The gaskets guide the gas entering the exhaust square pipe through the connecting box, and improve the sealing effect of the second arc-shaped guide plate on the inside of the exhaust square pipe.

[0012] Preferably, one end of the exhaust square tube is connected to a fan, the second arc-shaped guide plate is located on the side close to the exhaust square tube, and one end of the connecting pipe is connected to an exhaust hood. Starting the fan generates suction inside the exhaust square tube, and through the connecting box and connecting pipe, it generates suction inside the exhaust hood, which facilitates exhaust.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model firstly uses a sealing belt that passes through the connecting cavity and fixes both ends of the sealing belt to the two sides of the opening of the exhaust square pipe. The sealing belt is positioned on the support bar, which can seal the connection box to the exhaust square pipe. The position of the connection box at the top of the exhaust square pipe can be changed without affecting the stability of the connection. Furthermore, the first arc-shaped guide plate in the middle of the connection box and the second arc-shaped guide plate extending from the bottom of the connection box into the interior of the exhaust square pipe can gradually change the airflow direction, avoiding the increase in wind resistance caused by abrupt changes in the pipe cross-section and right-angle turns, thereby reducing the energy consumption of the entire ventilation system and improving ventilation efficiency.

[0015] 2. This utility model also improves the stability of the connecting box's movement when it slides on top of the exhaust square tube by setting the cooperation of the card block and the card strip. In addition, by setting the reinforcing metal wire in the middle of the sealing belt and the magnetic strip and sealing gasket on the top of the support strip, the magnetic strip can attract the reinforcing metal wire in the middle of the sealing belt, which can improve the fit of the sealing belt at the top of the support strip. Furthermore, by squeezing the sealing gasket, the sealing effect of the sealing belt on the top of the exhaust square tube is improved.

[0016] In summary, through the interaction of the above-mentioned multiple functions, the airflow direction can be gradually changed without affecting the movement of the connecting box, avoiding the increase in wind resistance caused by abrupt changes in pipe cross-section and right-angle turns, thereby reducing the energy consumption of the entire ventilation system, improving ventilation efficiency, and enhancing the sealing strength of the connection between the connecting box and the exhaust square pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram showing the disassembled structure of the exhaust square tube and connecting box of this utility model.

[0019] Figure 3 This is a partial cross-sectional structural diagram of the connecting box of this utility model.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the exhaust square tube and the connecting box of this utility model from the side view.

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the exhaust square tube and the connecting box of this utility model.

[0022] The attached diagram is labeled as follows: 1. Exhaust square duct; 2. Connecting box; 3. Connecting pipe; 4. First arc-shaped guide plate; 5. Second arc-shaped guide plate; 6. Clamping block; 7. Clamping strip; 8. Support strip; 9. Sealing belt; 10. Connecting cavity; 11. Fan; 12. Exhaust hood. Detailed Implementation

[0023] 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.

[0024] As attached Figure 1-3 The low-resistance connector of the sliding exhaust duct shown includes an exhaust square tube 1, a connecting box 2 at the top of the exhaust square tube 1, a connecting pipe 3 at one end of the connecting box 2, a first arc-shaped guide plate 4 fixedly connected to the inner cavity of the connecting box 2 away from the connecting pipe 3, and a second arc-shaped guide plate 5 fixedly connected to the bottom side of the connecting box 2. Through the first arc-shaped guide plate 4 and the second arc-shaped guide plate 5, air can be guided to flow smoothly inside the connector, effectively reducing the generation of eddies and turbulence. When air enters the connecting box 2 through the connecting pipe 3 and flows into the interior of the connecting pipe 3, the airflow direction is gradually changed by the first arc-shaped guide plate 4 and the second arc-shaped guide plate 5, avoiding the increase in wind resistance caused by abrupt changes in the pipe cross-section and right-angle turns, thereby reducing the energy consumption of the entire ventilation system and improving ventilation efficiency. A connecting cavity 10 is opened in the middle wall of the connecting box 2.

[0025] The bottom sides of the connecting box 2 are symmetrically fixed with locking blocks 6, the top sides of the exhaust square tube 1 are symmetrically fixed with locking strips 7, the top sides of the inner cavity of the exhaust square tube 1 are symmetrically fixed with support strips 8, and the top of the exhaust square tube 1 is provided with a sealing belt 9. When the connecting box 2 slides on the top of the exhaust square tube 1, the sealing belt 9 can move inside the connecting cavity 10. The locking blocks 6 and locking strips 7 improve the stability of the movement of the connecting box 2. The sealing belt 9 and the support strips 8 can improve the sealing effect on the top of the exhaust square tube 1.

[0026] As attached Figure 1-5As shown, the bottom of the connecting box 2 has a through hole, the top of the exhaust square pipe 1 has an opening, and both ends of the sealing belt 9 are fixedly connected to the wall of the exhaust square pipe 1. The two ends of the sealing belt 9 are located at the top of the support bar 8. The top of the support bar 8 is provided with a magnetic strip and a sealing gasket. The middle of the sealing belt 9 is provided with a reinforcing metal wire. The clamping block 6 is clamped on the clamping strip 7. The clamping block 6 is located on both sides of the clamping strip 7 and is set with an "L" shaped structure. One end of the first arc-shaped guide plate 4 is located on one side of the support bar 8. The first arc-shaped guide plate 4 is fixedly connected to the inner wall of the connecting box 2 on both sides. The second arc-shaped guide plate 5 is located in the middle of the exhaust square pipe 1. Sealing gaskets are provided on the four sides of the second arc-shaped guide plate 5. The three sides of the second arc-shaped guide plate 5 are in contact with the inner wall of the exhaust square pipe 1. A fan 11 is connected to one end of the exhaust square pipe 1. The second arc-shaped guide plate 5 is located on the side closer to the exhaust square pipe 1. An exhaust hood 12 is connected to one end of the connecting pipe 3. The sealing belt 9 passes through the middle of the connecting cavity 10. The connecting box 2 and the exhaust square pipe 1 can be connected through the bottom through hole and the top opening of the exhaust square pipe 1. The top of the exhaust square pipe 1 on both sides of the connecting box 2 is sealed by the sealing belt 9. The reinforcing metal wire in the middle of the sealing belt 9 is attracted by the magnetic strip, which can improve the fit of the sealing belt 9 at the top of the support strip 8. The sealing effect of the sealing belt 9 on the top of the exhaust square pipe 1 is improved by squeezing the sealing gasket. The stability of the connecting box 2 moving on the top of the exhaust square pipe 1 is improved by the sliding of the locking block 6 on the locking strip 7. The gas entering the connecting box 2 through the connecting pipe 3 is guided by the first arc-shaped guide plate 4. The gas entering the exhaust square pipe 1 through the connecting box 2 is guided by the second arc-shaped guide plate 5. The sealing effect of the second arc-shaped guide plate 5 on the exhaust square pipe 1 is improved by the sealing gasket. The fan 11 is started to generate suction inside the exhaust square pipe 1. The suction inside the exhaust hood 12 is generated through the connecting box 2 and the connecting pipe 3, which facilitates the use of exhaust.

[0027] The working principle of this utility model is as follows: When in use, starting the fan 11 can generate suction inside the exhaust hood 12 through the exhaust square pipe 1, the connecting box 2, and the connecting pipe 3. The airflow direction is gradually changed by the first arc-shaped guide plate 4 and the second arc-shaped guide plate 5, which avoids the increase in wind resistance caused by abrupt changes in pipe cross-section and right-angle turns, thereby reducing the energy consumption of the entire ventilation system and improving ventilation efficiency.

[0028] At the same time, when the connecting box 2 moves with the horizontal drive mechanism, the locking block 6 can slide on the locking strip 7, thereby driving the first arc-shaped guide plate 4 and the second arc-shaped guide plate 5 to move, and causing the sealing belt 9 to slide inside the connecting cavity 10. This allows the connecting box 2 to move at the top position of the exhaust square pipe 1 without affecting the sealing effect of the sealing belt 9 on the top opening of the exhaust square pipe 1.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. Low wind resistance connection for sliding exhaust ducts, comprising an exhaust square tube (1), characterized in that: The top of the exhaust square pipe (1) is provided with a connecting box (2), one end of the connecting box (2) is connected to a connecting pipe (3), the inner cavity of the connecting box (2) is fixedly connected to the side away from the connecting pipe (3) with a first arc-shaped guide plate (4), the bottom side of the connecting box (2) is fixedly connected to a second arc-shaped guide plate (5), and the middle wall of the connecting box (2) is provided with a connecting cavity (10). The bottom sides of the connecting box (2) are symmetrically fixed with locking blocks (6), the top sides of the exhaust square tube (1) are symmetrically fixed with locking strips (7), the top sides of the inner cavity of the exhaust square tube (1) are symmetrically fixed with support strips (8), and the top of the exhaust square tube (1) is provided with a sealing belt (9).

2. A low resistance to wind connection for sliding exhaust ducts according to claim 1, characterized in that: The bottom of the connecting box (2) is provided with a through hole, the top of the exhaust square pipe (1) is provided with an opening, and the two ends of the sealing belt (9) are fixedly connected to the wall of the exhaust square pipe (1).

3. A low resistance to airflow coupling for sliding air ducts according to claim 1, characterized in that: The two ends of the sealing belt (9) are located at the top of the support bar (8). The top of the support bar (8) is provided with a magnetic strip and a sealing gasket. The middle part of the sealing belt (9) is provided with a reinforcing metal wire. The sealing belt (9) passes through the middle of the connecting cavity (10).

4. A low resistance to airflow coupling for sliding air ducts according to claim 1, characterized in that: The card block (6) is attached to the card strip (7), the card block (6) is located on both sides of the card strip (7), and the card block (6) is set as an "L" shaped structure.

5. A low resistance to airflow coupling for sliding air ducts according to claim 1, characterized in that: One end of the first arc-shaped guide plate (4) is located on one side of the support bar (8), and both sides of the first arc-shaped guide plate (4) are fixedly connected to the inner cavity wall of the connecting box (2).

6. A low resistance to wind connection for sliding exhaust ducts according to claim 1, characterized in that: The second arc-shaped guide plate (5) is located in the middle of the exhaust square pipe (1). The walls of the second arc-shaped guide plate (5) are provided with sealing gaskets. The three sides of the second arc-shaped guide plate (5) are in contact with the inner wall of the exhaust square pipe (1).

7. A low resistance to wind connection for sliding exhaust ducts according to claim 1, characterized in that: One end of the exhaust square pipe (1) is connected to a fan (11), the second arc-shaped guide plate (5) is located on the side close to the exhaust square pipe (1), and one end of the connecting pipe (3) is connected to an exhaust hood (12).

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