Air pipe sealing connection structure

Abstract

The utility model relates to an air pipe sealing and connecting structure which comprises a pipe body with a smooth inner wall, connecting pipes are arranged at the two ends of the pipe body, a connecting disc is fixed to one end of each connecting pipe, a groove where a sealing strip is embedded is formed in the end face of each connecting disc, and a retractable corrugated rubber layer is connected between the pipe body and each connecting pipe. The corrugated rubber layer is located on the outer edges of the pipe body and the connecting pipe, a fixing screw is fixed to the connecting disc, one end of the fixing screw extends towards the pipe body, a connecting block is arranged on the pipe body, the end, penetrating through the connecting block, of the fixing screw is connected with a fixing nut through threads, a blocking net is arranged between the inner walls of the pipe body, and a leakage opening is formed in the position, below one side of the blocking net, of the pipe body. The air pipe filling device can be filled between two air pipes and serve as a filling section of the air pipes, when the gap between the two air pipes is too large, adaptive filling is carried out, the filling section can serve as an access hole to be reserved, and impurities can be blocked and collected by arranging the collecting box and are prevented from entering a machine along with airflow.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct connection, in particular to an air duct sealing connection structure. Background Art

[0002] The air duct is a pipe system used for air delivery and distribution. When long-distance air delivery is required, the air duct will be used for fixed-route delivery. After the route is reasonably set, fresh air and harmful gases can be effectively replaced. The air has a small resistance in the unified flow process of the air duct. It is low-cost and realizes efficient airflow delivery. Due to its wide applicability and closed characteristics, it is also applicable to smoke exhaust systems and dust removal systems.

[0003] For example, a Chinese utility model patent, publication number CN220152108U, discloses a duct connection structure. The duct connection structure includes a first duct and a second duct, a first flange and a second flange that are coaxially and oppositely arranged. The first flange is used to connect the first duct, and the second flange is used to connect the second duct. The first flange can be docked with the second flange to connect the first duct with the second duct; a first seal is provided on one of the first flange and the second flange, and a sealing groove is provided on the other. The first seal can be inserted into the sealing groove to seal the first flange with the second flange. The duct connection structure can seal and connect two adjacent metal ducts together to ensure the sealing of the ducts after connection, and is easy to install, saving time and effort.

[0004] The above-mentioned air duct connection mechanism proposes a new air duct connection structure, but generally it is a further sealing at the connection. In some cases, the air ducts are not ideally tightly aligned, and it is very troublesome and laborious to extend the fixed air duct again, thus the present application is proposed. Utility Model Content

[0005] In order to overcome the technical defects of the prior art, the utility model provides an air duct sealing connection structure, which can adapt and connect air ducts with a large space between the end faces, and can appropriately stretch itself to adapt to the vacant part, while maintaining the sealing of the air duct and the smoothness of the internal airflow.

[0006] The technical solution adopted by the utility model is as follows: it comprises a tube body with a smooth inner wall, connecting tubes are arranged at both ends of the tube body, a connecting plate is fixed at one end of the connecting tube, the connecting plate is used for being closely connected with the corresponding air duct end, and a connecting hole for fixed connection needs to be reserved in actual use, a groove for embedding a sealing strip is arranged on the end surface of the connecting plate, a shrinkable corrugated rubber layer is connected between the tube body and the connecting tube, the corrugated rubber layer can shrink within a certain range to change its own length by sealing itself, the corrugated rubber layer is located at the outer edge of the tube body and the connecting tube, a fixing screw is fixed on the connecting plate, one end of the fixing screw extends toward the tube body, a connecting block is arranged on the tube body, one end of the fixing screw passes through the connecting block and is connected with a fixing nut by threading, a blocking net is arranged between the inner walls of the tube body, a leakage opening is opened on the tube body below one side of the blocking net, a collecting box is arranged below the leakage opening, and the blocking net is used for blocking larger impurities floating with the airflow so that they fall into the collecting box through the leakage opening.

[0007] Preferably, in order to regulate the smoothness of the inner wall of the airflow channel and avoid obstructing the airflow, an outer retaining ring is fixed to the side of the connecting tube close to the tube body, and inner retaining rings are provided on both sides of the tube body, and one side of the inner retaining ring extends between the outer retaining ring and the corrugated rubber layer.

[0008] Preferably, in order to facilitate the installation and fixing of the collection box, hook grooves for fixing the collection box are provided on both sides of the shell, a hook component is fixed on the side wall of the collection box, a notch for allowing the collection box to pass through is provided on the side wall of the shell, and a side groove for embedding the collection box is provided on the inner wall of the shell.

[0009] Preferably, in order to further fix the collection box and prevent it from accidentally falling off, a connecting plate is provided on the edge of the collection box corresponding to the notch, the connecting plate extends upward, and connecting bolts are provided on the connecting plate, and corresponding threaded holes are provided on the shell.

[0010] Preferably, in order to be able to freely control the opening and closing of the leakage port and to be able to remove the collection box when airflow is operating in the air duct, rotating openings are provided on both sides of the shell, and an arc-shaped baffle plate that is slidably engaged with the outer wall of the tube body is provided in the rotating opening, and a movable opening corresponding to the leakage port is provided on the arc-shaped baffle plate, and one end of the arc-shaped baffle plate with the movable opening is located inside the shell.

[0011] Preferably, in order to facilitate the operation of the arc baffle, an operating handle is provided on one end of the arc baffle, and a fastener for fixing the arc baffle is provided, and a block for blocking the arc baffle is provided on the tube body.

[0012] Preferably, in order to further make the air flow in the air duct flow more smoothly, the arc-shaped baffle is provided with an inner baffle, and the inner baffle is located in the tube body and fits the inner wall of the tube body.

[0013] Preferably, in order to clean the impurities attached to the blocking net, a cleaning strip is provided on the inner baffle plate, the cleaning strip extends to one side of the blocking net, and the cleaning strip is provided with branches extending in all directions with the axis of the tube body as the center.

[0014] The beneficial effects of the utility model are as follows: the utility model can be filled between two air ducts as a filling section of the air duct. When the gap between the two sections of the air duct is too large, adaptive filling can be performed, and the filling section can be retained as an inspection port. The setting of a collection box can block and collect impurities to prevent them from entering the interior of the machine with the airflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the bottom shell structure of the tube body of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the outer retaining ring and the inner retaining ring of the utility model.

[0018] Figure 4 The utility model is a structural schematic diagram of the arc baffle.

[0019] Figure 5 It is a structural schematic diagram of the collection box of the utility model.

[0020] Figure 6 It is a schematic diagram of the structure of the inner baffle and the cleaning strip of the utility model.

[0021] Explanation of the accompanying drawings: In the figure: 1, tube body; 101, blocking net; 102, leakage; 2, connecting tube; 201, connecting plate; 3, corrugated rubber layer; 4, fixing screw; 5, collecting box; 501, hook component; 502, connecting plate; 6, outer baffle ring; 7, inner baffle ring; 8, arc baffle; 801, movable opening; 802, operating handle; 803, inner baffle; 804, cleaning strip. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] like Figure 1-6As shown, the present embodiment provides a duct sealing connection structure, including a tube body 1 with a smooth inner wall, connecting tubes 2 are arranged at both ends of the tube body 1, a connecting plate 201 is fixed at one end of the connecting tube 2, the connecting plate 201 is used to be tightly connected with the corresponding duct end, and a connecting hole for fixed connection needs to be reserved in actual use, a groove for embedding a sealing strip is arranged on the end surface of the connecting plate 201, a shrinkable corrugated rubber layer 3 is connected between the tube body 1 and the connecting tube 2, the corrugated rubber layer 3 itself can shrink within a certain range to change its own length, the corrugated rubber layer 3 is located at the outer edge of the tube body 1 and the connecting tube 2, a fixing screw 4 is fixed on the connecting plate 201, one end of the fixing screw 4 extends toward the tube body 1, a connecting block is arranged on the tube body 1, one end of the fixing screw passes through the connecting block and is connected to a fixing nut by thread, and a fixing screw 4 is arranged between the inner walls of the tube body 1 There is a blocking net 101, and a leakage hole 102 is opened on the tube body 1 below one side of the blocking net 101, and a collecting box 5 is provided below the leakage hole 102. The blocking net 101 is used to block larger impurities floating with the airflow, so that they fall into the collecting box 5 through the leakage hole 102. When in use, the utility model is placed between the air ducts to be connected, and then one end is connected and fixed first, and the connection length to be filled is adapted by adjusting the fixing degree of the fixing screw 4, and the fixed end of the fixing screw 4 can be changed according to actual needs. Specifically, the connecting block for the sleeve fixing screw 4 is set on the connecting disk 201, so that the adjustment range can be increased and the stroke of the corrugated rubber hose can be larger. During operation, impurities in the airflow inside the air duct can be screened through the blocking net 101, and larger impurities can be blocked and then fall into the collecting box 5.

[0024] An outer retaining ring 6 is fixed on one side of the connecting pipe 2 close to the pipe body 1, and inner retaining rings 7 are provided on both sides of the pipe body 1. One side of the inner retaining ring 7 extends between the outer retaining ring 6 and the corrugated rubber layer 3, so as to regulate the smoothness of the inner wall of the airflow channel and avoid obstruction of airflow. In order to prevent the corrugated rubber hose from excessive deformation, a steel ring can be embedded in the corrugated rubber hose, so as to ensure that the corrugated rubber hose is not excessively deformed due to excessive internal and external pressure difference.

[0025] Hook grooves for fixing the collection box 5 are provided on both sides of the shell, and a hook component 501 is fixed on the side wall of the collection box 5. A notch is provided on the side wall of the shell to allow the collection box 5 to pass through, and a side groove for embedding the collection box 5 is provided on the inner wall of the shell, which can facilitate the installation and fixing of the collection box 5. A connecting plate 502 is provided on the edge of the collection box 5 corresponding to the notch, and the connecting plate 502 extends upward, and a connecting bolt is provided on the connecting plate 502, and a corresponding threaded hole is provided on the shell, which can further fix the collection box 5 to prevent accidental falling off. Rotating openings are provided on both sides of the shell, and an arc-shaped baffle 8 that fits on the outer wall of the tube body 1 is slidably clamped in the rotating opening, and a movable opening 801 corresponding to the leakage opening 102 is opened on the arc-shaped baffle 8, and the arc-shaped baffle 8 is provided with a movable opening 801. One end is located in the shell, so that the opening and closing of the leakage port 102 can be freely controlled, and the collection box 5 can be removed when there is airflow in the air duct. An operating handle 802 is provided on one end of the arc-shaped baffle 8, and a fastener for fixing the arc-shaped baffle 8 is provided. A block for blocking the arc-shaped baffle 8 is provided on the tube body 1, so that the arc baffle can be easily operated. When in use, when the collection box 5 needs to be removed, the fastener for fixing the arc-shaped baffle 8 is first loosened, and then the arc-shaped baffle 8 is controlled to rotate by the operating handle 802 until the movable port 801 moves outside the shell to block the leakage port 102, and then the connecting bolts on the connecting plate 502 are removed, and then the collection box 5 is pulled toward the notch side of the shell to make the hook component 501 move with it, and then the collection box 5 is pulled downward.

[0026] An inner baffle 803 is provided on the arc-shaped baffle plate 8, and the inner baffle plate 803 is located inside the tube body 1 and fits against the inner wall of the tube body 1, so that the airflow in the air duct can be further smoothed. A cleaning strip 804 is provided on the inner baffle plate 803, and the cleaning strip 804 extends to one side of the blocking net 101. The cleaning strip 804 is provided with branches extending in all directions with the axis of the tube body 1 as the center, so that impurities attached to the blocking net 101 can be cleaned. Since there is still a certain space between the shell and the tube body 1, in order to fill the missing space, the inner baffle plate 803 is provided inside the tube body 1, which can better maintain the smoothness of the inside of the tube body 1, and when the arc-shaped baffle plate 8 is controlled to rotate, the cleaning strip 804 can be linked to rotate, and the blocking net 101 is cleaned by the cleaning strip 804. In order to better stabilize the cleaning strip 804, a track groove for embedding the cleaning strip 804 can be opened in the tube body 1.

[0027] When in use, the utility model is placed between the air ducts to be connected, and then one end is connected and fixed first, and the fixing degree of the fixing screw 4 is adjusted to adapt to the connection length to be filled, and the fixed end of the fixing screw 4 can be changed according to actual needs. Specifically, the connecting block for the sleeve fixing screw 4 is set on the connecting disk 201, which can increase the adjustment range and make the stroke of the corrugated rubber hose larger. During operation, impurities in the air flow inside the air duct can be screened through the blocking net 101, and larger impurities can be blocked and then fall into the collection box 5.

[0028] The utility model can be filled between two air ducts as a filling section of the air duct. When the gap between the two sections of the air duct is too large, adaptive filling can be performed, and the filling section can be retained as an inspection port. The collection box 5 is provided to block and collect impurities to prevent them from entering the interior of the machine with the airflow.

[0029] The above shows and describes the basic principles, main features and advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A duct sealing connection structure, comprising a tube body (1) with a smooth inner wall, a connecting tube (2) being provided at both ends of the tube body (1), a connecting plate (201) being fixed at one end of the connecting tube (2), a groove for embedding a sealing strip being provided on the end surface of the connecting plate (201), characterized in that: A shrinkable corrugated rubber layer (3) is connected between the tube body (1) and the connecting tube (2), the corrugated rubber layer (3) being located at the outer edges of the tube body (1) and the connecting tube (2), a fixing screw (4) being fixed on the connecting plate (201), one end of the fixing screw (4) extending toward the tube body (1), a connecting block being provided on the tube body (1), one end of the fixing screw passing through the connecting block being connected to a fixing nut by threading, a blocking net (101) being provided between the inner walls of the tube body (1), a leakage opening (102) being provided on the tube body (1) below one side of the blocking net (101), and a collecting box (5) being provided below the leakage opening (102).

2. The air duct sealing connection structure according to claim 1, characterized in that: An outer retaining ring (6) is fixed to one side of the connecting pipe (2) close to the pipe body (1), and inner retaining rings (7) are provided on both sides of the pipe body (1), with one side of the inner retaining ring (7) extending between the outer retaining ring (6) and the corrugated rubber layer (3).

3. The air duct sealing connection structure according to claim 1, characterized in that: A shell extending downward is provided at the bottom of the leakage port (102), hook grooves for fixing the collection box (5) are provided on both sides of the shell, a hook component (501) is fixed on the side wall of the collection box (5), a notch is provided on the side wall of the shell to allow the collection box (5) to pass through, and a side groove for embedding the collection box (5) is provided on the inner wall of the shell.

4. The air duct sealing connection structure according to claim 3, characterized in that: A connecting plate (502) is provided on the edge of the collection box (5) corresponding to the notch, the connecting plate (502) extends upwards, and a connecting bolt is provided on the connecting plate (502), and a corresponding threaded hole is provided on the shell.

5. The air duct sealing connection structure according to claim 4, characterized in that: Rotating openings are provided on both sides of the shell, and an arc-shaped baffle (8) that is slidably engaged with the outer wall of the tube body (1) is provided in the rotating opening. The arc-shaped baffle (8) is provided with a movable opening (801) corresponding to the leakage opening (102), and one end of the arc-shaped baffle (8) provided with the movable opening (801) is located in the shell.

6. The air duct sealing connection structure according to claim 5, characterized in that: An operating handle (802) is provided on one end of the arc-shaped baffle (8), and a fastener for fixing the arc-shaped baffle (8) is provided, and a block for blocking the arc-shaped baffle (8) is provided on the tube body (1).

7. The air duct sealing connection structure according to claim 6, characterized in that: An inner baffle (803) is provided on the arc-shaped baffle (8), and the inner baffle (803) is located inside the tube body (1) and fits the inner wall of the tube body (1).

8. The air duct sealing connection structure according to claim 7, characterized in that: The inner baffle plate (803) is provided with a cleaning strip (804), the cleaning strip (804) extending to one side of the blocking net (101), and the cleaning strip (804) is provided with branches extending in all directions with the axis of the tube body (1) as the center.

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