Adjustable reducing pipe

Abstract

The utility model discloses an adjustable reducing pipe which comprises a reducing pipe body and an adapter connected to one end of the reducing pipe body in a threaded mode, the adapter has elasticity and flexibility, a wide opening and a narrow opening are formed in the reducing pipe body, a partition plate is fixed to the junction of the wide opening and the narrow opening, and two symmetrical fan-shaped ventilation openings are formed in the partition plate. A rotating shaft is rotatably connected to the center of the partition plate, a sleeve is fixedly connected to the rotating shaft, fan-shaped cover plates matched with the ventilation opening are connected to the two sides of the sleeve, a transmission rod is rotatably connected to the reducing pipe body, a first bevel gear is connected to the inner end of the transmission rod, and a second bevel gear is connected to the upper end of the rotating shaft. The first bevel gear is meshed with the second bevel gear, and a control mechanism for driving the transmission rod to rotate is arranged outside the reducing pipe body. According to the air volume, the transmission rod is controlled to rotate to drive the rotating shaft to rotate, so that the cover plate is driven to rotate to adjust the size of the ventilation opening, and the air volume is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic pipes, and specifically relates to an adjustable reducing pipe. Background Technique

[0002] The reducing pipe refers to the variable-diameter part of the entire ventilation system for uniform air supply, that is, the part where the pipe diameter changes from large to small. The current reducing pipes have the following problems: (1) The reducing pipes are fixed and cannot adjust the length or direction of the reducing pipes according to needs at the installation site, making on-site installation inconvenient; (2) The air volume cannot be adjusted according to needs. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an adjustable reducing pipe to solve the problems mentioned in the above background technique.

[0004] To solve the above technical problems, the utility model provides the following technical solutions:

[0005] An adjustable reducing pipe includes a reducing pipe body, an adapter pipe threadedly connected to one end of the reducing pipe body. The adapter pipe has elasticity and telescopic property. A wide opening and a narrow opening are provided inside the reducing pipe body. A partition is fixed at the junction of the wide opening and the narrow opening. Two symmetric and fan-shaped ventilation openings are provided on the partition. A rotating shaft is rotatably connected to the center of the partition. A sleeve is fixedly connected to the rotating shaft. Two fan-shaped covers that cooperate with the ventilation openings are connected to both sides of the sleeve. A transmission rod is rotatably connected to the reducing pipe body. The inner end of the transmission rod is connected with a first bevel gear. The upper end of the rotating shaft is connected with a second bevel gear. The first bevel gear meshes with the second bevel gear. A control mechanism for driving the transmission rod to rotate is provided outside the reducing pipe body.

[0006] Preferably, the adapter pipe includes a corrugated pipe and end caps fixedly connected to both ends of the corrugated pipe. One of the end caps is threadedly connected to the reducing pipe body.

[0007] In the above technical solution, during installation, the adapter pipe can be installed on the reducing pipe body. The distance that the reducing pipe body reaches can be adjusted through the corrugated pipe, and the direction of the reducing pipe body can also be adjusted.

[0008] Preferably, the control mechanism includes a box body installed outside the reducing pipe body. A motor, a control board and a battery are installed inside the box body. The motor is drivingly connected to one end of the transmission rod. The motor, the battery and the control board are electrically connected; A wind volume sensor is provided inside the narrow opening of the reducing pipe body. The wind volume sensor is electrically connected to the control board.

[0009] In the above technical solution, the battery provides power for the control board, the motor and the wind volume sensor. The wind volume sensor senses the wind volume at the narrow opening of the reducing pipe body and transmits the signal to the control board to control the ventilation volume of the ventilation opening.

[0010] Preferably, a first sealing ring is provided around the connection between the transmission rod and the reducing pipe body; a second sealing ring is embedded in the end cap.

[0011] In the above technical solution, the sealing performance between the transmission rod and the reducing pipe body can be improved through the first sealing ring, and the sealing performance between the end cap and the reducing pipe body can be improved through the second sealing ring.

[0012] Preferably, a fan-shaped sealing strip is connected to the bottom surface of the cover plate. After the cover plate completely covers the ventilation opening, the sealing strip is located around the ventilation opening and tightly presses on the partition board.

[0013] In the above technical solution, after the cover plate completely covers the ventilation opening, the sealing strip is located around the ventilation opening and tightly presses on the partition board, which can improve the sealing performance and block the air flow.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] (1) During installation, according to the on-site situation, an adapter can be installed on the reducing pipe body, thereby adjusting the length and direction of the reducing pipe body and improving the convenience of installation.

[0016] (2) According to the air volume, control the rotation of the transmission rod. Through the cooperation of the first bevel gear and the second bevel gear, drive the rotation of the rotating shaft, thereby driving the rotation of the cover plate to adjust the size of the ventilation opening, and thus realizing the adjustment of the air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the present utility model;

[0018] Figure 2 is a schematic diagram of the reducing pipe body;

[0019] Figure 3 is a top view of the partition board and the cover plate;

[0020] Figure 4 is a bottom view of the cover plate;

[0021] In the figure: 1 - reducing pipe body, 2 - adapter, 201 - corrugated pipe, 202 - end cap, 3 - partition board, 4 - ventilation opening, 5 - rotating shaft, 6 - sleeve, 7 - cover plate, 8 - transmission rod, 9 - first bevel gear, 10 - second bevel gear, 11 - box body, 12 - motor, 13 - control board, 14 - battery, 15 - air volume sensor, 16 - first sealing ring, 17 - sealing strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] See also Figures 1-3 An adjustable reducer includes a reducer body 1 and an adapter tube 2 threadedly connected to one end of the reducer body. The adapter tube 2 is elastic and retractable. Specifically, the adapter tube 2 includes a bellows 201 and end caps 202 fixedly connected to both ends of the bellows, one of which is threadedly connected to the reducer body 1. During installation, the adapter tube 2 is mounted on the reducer body 1, and the other end cap 202 of the adapter tube 2 is connected to an external pipe. The bellows 201 can be adjusted to adjust the distance reached by the reducer body 1, and the direction of the reducer body 1 can also be adjusted.

[0025] A wide mouth and a narrow mouth are provided in the reducer body 1, and a partition 3 is fixed at the junction of the wide mouth and the narrow mouth. Two symmetrical and fan-shaped vents 4 are opened on the partition 3. The center of the partition 3 is rotatably connected to a rotating shaft 5, and a sleeve 6 is fixedly connected to the rotating shaft 5. Both sides of the sleeve 6 are connected to fan-shaped cover plates 7 that match the vents. A transmission rod 8 is rotatably connected to the reducer body 1, and the inner end of the transmission rod 8 is connected to a first bevel gear 9, and the upper end of the rotating shaft 5 is connected to a second bevel gear 10. The first bevel gear 9 is meshed with the second bevel gear 10. The outside of the reducer body 1 is provided with a control mechanism that drives the transmission rod 8 to rotate.

[0026] The control mechanism includes a housing 11 mounted on the outside of the reducer body. Housing 11 houses a motor 12, a control board 13, and a battery 14. Motor 12 is in driving connection with one end of a transmission rod 8 and is electrically connected to the motor, battery 14, and control board 13. An air volume sensor 15 is located within the narrow opening of the reducer body 1 and is electrically connected to the control board 13. The battery provides power to the control board, motor, and air volume sensor. The air volume sensor senses the air volume at the narrow opening of the reducer body and transmits a signal to the control board to control the ventilation volume of the vent.

[0027] A first sealing ring 16 is provided at the connection between the transmission rod 8 and the reducer body 1, and a second sealing ring is embedded in the end cap 202. The first sealing ring 16 improves the seal between the transmission rod 8 and the reducer body 1, while the second sealing ring improves the seal between the end cap 202 and the reducer body 1.

[0028] The working principle of this embodiment is as follows: The air volume sensor senses the air volume at the narrow opening of the tapered pipe body. According to the air volume situation, the motor operates to drive the transmission rod to rotate. Through the cooperation of the first bevel gear and the second bevel gear, the rotating shaft is driven to rotate, thereby driving the cover plate to rotate to adjust the size of the ventilation opening, so as to realize the adjustment of the air volume.

[0029] Embodiment 2

[0030] On the basis of Embodiment 1, as Figure 2 、 Figure 4 shown, a sector-shaped sealing strip 17 is connected to the bottom surface of the cover plate 7. After the cover plate 7 completely covers the ventilation opening 4, the sealing strip 17 is located on the periphery of the ventilation opening 4 and tightly presses on the partition plate 3, thereby closing the ventilation opening 4, blocking the air flow, and improving the sealing performance.

[0031] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable tapered tube, characterized in that: It includes a tapered pipe body (1) and an adapter pipe (2) threadedly connected to one end of the tapered pipe body. The adapter pipe (2) is elastic and stretchable. A wide opening and a narrow opening are provided inside the tapered pipe body (1). A partition plate (3) is fixed at the junction of the wide opening and the narrow opening. Two symmetric and fan-shaped ventilation openings (4) are formed on the partition plate (3). A rotating shaft (5) is rotatably connected to the center of the partition plate (3). A sleeve (6) is fixedly connected to the rotating shaft (5). Two fan-shaped cover plates (7) that cooperate with the ventilation openings are connected to both sides of the sleeve (6). A transmission rod (8) is rotatably connected to the tapered pipe body (1). The inner end of the transmission rod (8) is connected to a first bevel gear (9). The upper end of the rotating shaft (5) is connected to a second bevel gear (10). The first bevel gear (9) meshes with the second bevel gear (10). A control mechanism for driving the transmission rod (8) to rotate is provided outside the tapered pipe body (1).

2. The adjustable tapered tube according to claim 1, wherein: The adapter pipe (2) includes a corrugated pipe (201) and end caps (202) fixedly connected to both ends of the corrugated pipe. One of the end caps (202) is threadedly connected to the tapered pipe body (1).

3. The adjustable tapered tube according to claim 2, wherein: The control mechanism includes a box body (11) installed outside the tapered pipe body. A motor (12), a control board (13) and a battery (14) are installed inside the box body (11). The motor (12) is drivingly connected to one end of the transmission rod (8). The motor (12), the battery (14) and the control board (13) are electrically connected.

4. The adjustable tapered tube according to claim 3, wherein: An air volume sensor (15) is provided inside the narrow opening of the tapered pipe body (1). The air volume sensor (15) is electrically connected to the control board (13).

5. The adjustable tapered tube according to claim 4, wherein: A first sealing ring (16) is provided in a circle at the connection between the transmission rod (8) and the tapered pipe body (1); a second sealing ring is embedded in the end cap (202).

6. The adjustable tapered tube according to claim 5, wherein: A fan-shaped sealing strip (17) is connected to the bottom surface of the cover plate (7). After the cover plate (7) completely covers the ventilation opening (4), the sealing strip (17) is located outside the ventilation opening (4) and tightly presses on the partition plate (3).

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