Automatic opening and closing structure of ventilating duct

Abstract

The utility model relates to the technical field of pipeline valves, in particular to an automatic ventilation pipeline opening and closing structure which comprises a connecting pipe, connecting flanges are fixedly mounted at the two ends of the connecting pipe, fixed closing pieces are fixedly mounted at the two ends of the inner side of the connecting pipe, and a mounting piece is fixedly mounted on the inner side of the connecting pipe and movably provided with a control pipe. The control pipe is connected with a control handle, the control handle controls the control pipe to move, the end, away from the control pipe, of the control handle is located on the outer side of the connecting pipe, sliding pipes are installed on the inner side of the control pipe in a sliding mode, sliding pipes are installed at the two ends of the control pipe and sleeved with control springs, the first ends of the control springs abut against the control pipe, and the second ends of the control springs abut against the sliding pipes. A sliding sealing piece is fixedly installed at the end, away from the control pipe, of the sliding pipe. By arranging the fixed sealing piece and the sliding sealing piece which can be switched between the normally-open state and the normally-closed state, a one-way valve structure capable of changing the direction is formed in the connecting pipe, and control over the ventilation direction of the ventilation pipeline is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of pipeline valves, and in particular to an automatic opening and closing structure for ventilation ducts. Background Technology

[0002] A ventilation duct is a pipe used for gas circulation. Different opening and closing structures are required for ventilation ducts in different application scenarios. When controlling the unidirectional flow of air in a ventilation duct, a one-way valve is usually used for automatic control. However, since the one-way valve is for unidirectional flow, it is more troublesome to disassemble and reposition the one-way valve when the airflow in the ventilation duct needs to flow in the opposite direction. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this application is to provide an automatic opening and closing structure that can easily change the control direction of ventilation ducts.

[0004] The above-mentioned objective of this application is achieved through the following technical solution:

[0005] An automatic opening and closing structure for ventilation ducts includes:

[0006] A connecting pipe, with connecting flanges fixedly installed at both ends;

[0007] The fixing sealing plate is fixedly installed at both ends of the inner side of the connecting pipe;

[0008] The mounting component is fixedly installed inside the connecting pipe;

[0009] A control tube, which is movably mounted on the mounting component;

[0010] A control handle is connected to the control tube, and the control handle controls the movement of the control tube. The end of the control handle away from the control tube is located outside the connecting tube.

[0011] A sliding tube is slidably installed inside the control tube, and the sliding tube is installed at both ends of the control tube;

[0012] A control spring, the first end of which abuts against the control tube, and the second end of which abuts against the sliding tube;

[0013] A sliding sealing plate is fixedly installed at the end of the sliding tube away from the control tube.

[0014] Optionally, the control tube is rotatably mounted on the mounting component, the sliding tube is keyed to the control tube, the control handle is rotatably mounted on the connecting tube, and both the fixed sealing plate and the sliding sealing plate are provided with multiple vent holes. After the sliding sealing plate rotates, the fixed sealing plate and the sliding sealing plate seal each other's vent holes.

[0015] Optionally, the mounting component is rotatably mounted with a worm gear, the control tube is fixedly mounted to the worm gear, and the control handle is mounted with a worm that meshes with the worm gear.

[0016] Optionally, the worm gear side is divided into a worm tooth area and a flat area, wherein the flat area is not provided with worm teeth.

[0017] Optionally, the control tube can be slidably mounted on the mounting component, and the fixed sealing plate is annular. When the sliding sealing plate is attached to the fixed sealing plate, it closes the annular hole of the fixed sealing plate.

[0018] Optionally, a fixed post is fixedly installed on the upper side of the control tube, and a transmission rod is rotatably connected to the fixed post. An eccentric rod is fixedly installed at the bottom of the control handle, and the eccentric rod is rotatably connected to the end of the transmission rod away from the fixed post. The eccentric rod is fixedly connected to the control handle, and the control handle is rotatably installed on the connecting tube.

[0019] Optionally, the connecting pipe is threaded with a fixing screw, which, when tightened, abuts against the control handle.

[0020] Optionally, an indicator mark is provided on the outside of the connecting pipe.

[0021] In summary, this application includes at least the following beneficial technical effects:

[0022] By setting fixed sealing plates and sliding sealing plates that can switch between normally open and normally closed states, a one-way valve structure that can change direction is formed inside the connecting pipe, which facilitates the control of the ventilation direction of the ventilation duct. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the overall structure of another embodiment of this application;

[0025] Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0026] Attached reference numerals: 1. Connecting pipe; 11. Connecting flange;

[0027] 2. Fixed sealing plate; 201. Vent hole;

[0028] 31. Mounting component; 32. Control tube; 321. Fixing post; 322. Transmission rod; 323. Eccentric rod; 324. Fixing screw; 33. Control handle;

[0029] 41. Sliding tube; 42. Control spring;

[0030] 5. Sliding sealing plate;

[0031] 61. Worm gear; 611. Worm tooth area; 612. Planar area; 62. Worm. Detailed Implementation

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Please see Figure 1 or Figure 2 This application discloses an automatic opening and closing structure for a ventilation duct, comprising a connecting pipe 1, with connecting flanges 11 fixedly installed at both ends of the connecting pipe 1, and fixed sealing plates 2 fixedly installed at both ends of the inner side of the connecting pipe 1. An installation component 31 is fixedly installed on the inner side of the connecting pipe 1, and a control pipe 32 is movably installed on the installation component 31. The control pipe 32 is connected to a control handle 33, which controls the movement of the control pipe 32. The end of the control handle 33 away from the control pipe 32 is located outside the connecting pipe 1. A sliding pipe 41 is slidably installed on the inner side of the control pipe 32, with sliding pipes 41 installed at both ends of the control pipe 32. A control spring 42 is sleeved on the sliding pipe 41, with the first end of the control spring 42 abutting against the control pipe 32 and the second end abutting against the sliding pipe 41. A sliding sealing plate 5 is fixedly installed on the end of the sliding pipe 41 away from the control pipe 32.

[0034] Specifically, a fixed sealing plate 2 and a sliding sealing plate 5 are provided at both ends of the connecting pipe 1. The gaps between the fixed sealing plate 2 and the sliding sealing plate 5 are complementary. When the sliding sealing plate 5 is in contact with the fixed sealing plate 2, the connecting pipe 1 can be closed. The sliding sealing plate 5 is slidably connected to the control pipe 32 through the control spring 42 and the sliding pipe 41, so that it can open and close in one direction, forming a one-way valve structure. One end of the fixed sealing plate 2 and the sliding sealing plate 5 at both ends is normally closed, and the other end is normally open. The control pipe 32 is installed on the mounting part 31 and its movement is controlled by the control handle 33. The control handle 33 controls the movement of the control pipe 32, so that the normally open or normally closed state at both ends can be switched.

[0035] In this way, by setting a fixed sealing plate 2 and a sliding sealing plate 5 that can switch between normally open and normally closed states, a one-way valve structure that can change direction is formed inside the connecting pipe 1, which facilitates the control of the ventilation direction of the ventilation duct.

[0036] In some feasible methods, connecting flanges 11 are fixedly installed at both ends of the connecting pipe 1, and the connecting flanges 11 are used to connect the ventilation duct.

[0037] As one specific implementation of the automatic opening and closing structure for a ventilation duct provided in the application, please refer to Figure 1 The control tube 32 is rotatably mounted on the mounting part 31. The sliding tube 41 is keyed to the control tube 32. The control handle 33 is rotatably mounted on the connecting tube 1. Both the fixed sealing plate 2 and the sliding sealing plate 5 are provided with multiple vent holes 201. After the sliding sealing plate 5 is rotated, the fixed sealing plate 2 and the sliding sealing plate 5 seal each other's vent holes 201.

[0038] Overall, by setting up mutually enclosed [systems / mechanisms]... Vent 201 allows the sliding sealing plate 5 to easily switch between the normally closed and normally open states of the fixed sealing plate 2 by rotation.

[0039] Furthermore, the mounting component 31 is rotatably mounted with a worm gear 61, the control tube 32 is fixedly mounted on the worm gear 61, and the control handle 33 is mounted with a worm 62 that meshes with the worm gear 61.

[0040] It should be understood that the structure of worm gear 61 and worm 62 has self-locking properties. After the state of the sliding sealing plate 5 is switched by driving worm gear 62 through worm gear 61, it is easy to maintain the switched state.

[0041] Furthermore, the side of the worm gear 61 is divided into a worm tooth area 611 and a flat area 612, with no worm teeth in the flat area 612.

[0042] It should be understood that by setting a flat area 612 without worm teeth, the worm 62 can no longer rotate when it rotates to the end of the worm tooth area 611, thus reducing the possibility of misalignment between the fixed sealing plate 2 and the sliding sealing plate 5 due to excessive rotation.

[0043] In some feasible configurations, the connecting pipe 1 can be a circular pipe, the fixed sealing plate 2 and the sliding sealing plate 5 are circular plates with vent holes 201 arranged in a circular array, the worm gear 61 is rotatably mounted on the mounting member 31, the mounting member 31 is a bracket adapted to the mounting of the worm gear 61, the control pipe 32 passes through the worm gear 61 and is fixedly connected, one end of the worm 62 passes through the connecting pipe 1, and a rotation knob is installed at the end of the worm 62 for easy rotation. When the worm 62 rotates, the worm gear 61 rotates accordingly, thereby causing the sliding sealing plate 5 to rotate and close the fixed sealing plate 2, and the other end of the sliding sealing plate 5 rotates to align with the vent hole 201 of the fixed sealing plate 2. When the airflow is forward, the air pressure pushes the sliding sealing plate 5 and the control spring 42 to open the closed vent hole 201. When the airflow is reversed, the sliding sealing plate 5 and the control spring 42 form a seal to prevent its flow.

[0044] As provided in the application An automatic opening and closing structure for ventilation ducts Another specific implementation method, Please see Figure 2The control tube 32 can be slidably installed on the mounting part 31. The fixed sealing plate 2 is annular. When the sliding sealing plate 5 is attached to the fixed sealing plate 2, it closes the annular hole of the fixed sealing plate 2.

[0045] Depending on the specific application scenario, the sliding control tube 32 makes it relatively easy to control the sliding sealing plate 5 to close or move away from the fixed sealing plate 2.

[0046] Furthermore, a fixed post 321 is fixedly installed on the upper side of the control tube 32, and a transmission rod 322 is rotatably connected to the fixed post 321. An eccentric rod 323 is fixedly installed at the bottom of the control handle 33. The eccentric rod 323 is rotatably connected to the end of the transmission rod 322 away from the fixed post 321. The eccentric rod 323 is fixedly connected to the control handle 33. The control handle 33 is rotatably installed on the connecting tube 1.

[0047] It should be understood that when the eccentric rod 323 rotates and pulls the transmission rod 322, the transmission rod 322 pulls the control tube 32 to slide, changing the opening and closing state of the sliding sealing plate 5 and the fixed sealing plate 2, so as to facilitate the reversal of the airflow direction controlled by the ventilation duct.

[0048] Further, please refer to Figure 3 The connecting pipe 1 is threaded with a fixing screw 324, which, when tightened, abuts against the control handle 33.

[0049] It should be understood that by setting the fixing screw 324, it is easy to fix the position of the control handle 33 after rotation, restrict the rotation of the control handle 33, and make it easy for the sliding sealing plate 5 and the fixed sealing plate 2 to maintain a closed or open state.

[0050] In some feasible embodiments, the mounting component 31 is a square tube fixedly connected to the connecting pipe 1. A sliding groove is provided on one side of the mounting component 31, and a fixing post 321 passes through this sliding groove and is fixedly connected to the control pipe 32. One end of the control handle 33 is rotatably mounted on the mounting component 31, and the other end passes through the connecting pipe 1. Both the eccentric rod 323 and the transmission rod 322 are rectangular rods. When the eccentric rod 323 rotates with the control handle 33, it pulls the control handle 33, causing the control handle 33 to pull the fixing post 321 to slide, thereby causing the control pipe 32 to slide and move the sliding sealing plate 5 closer to or away from the fixed sealing plate 2. A locking round tube is installed on the outside of the connecting pipe 1, and the control handle 33 passes through the locking round tube. A fixing screw 324 is threaded onto the side of the locking round tube. To facilitate the rotation of the control handle 33, a handle is installed at the end of the control handle 33.

[0051] As provided in the application An automatic opening and closing structure for ventilation ducts One specific implementation method, Please see Figure 2 An indicator mark is provided on the outside of the connecting pipe 1.

[0052] It should be understood that by setting up indicator signs to indicate the direction of airflow after rotation, it is convenient to control the gas flow direction of the ventilation duct.

[0053] In some feasible methods, the indicator includes an arrow on the upper end of the connecting pipe 1 to indicate the direction of gas flow, and a triangular mark on the control handle 33. When the triangular mark points to one of the arrows, it indicates the current direction of gas flow.

[0054] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic opening and closing structure for a ventilation duct, characterized in that, The utility model provides a kind of pipe connector, including: Connecting pipe (1), both ends of the connecting pipe (1) are fixedly installed with connecting flange (11); Fixed closure piece (2), both ends of the inside of the connecting pipe (1) are fixedly installed with the fixed closure piece (2); Mounting piece (31), the inside of the connecting pipe (1) is fixedly installed with the mounting piece (31); Control pipe (32), the mounting piece (31) is movably installed with the control pipe (32); Control handle (33), the control handle (33) is connected to the control pipe (32), the control handle (33) controls the activity of the control pipe (32), and one end of the control handle (33) away from the control pipe (32) is located on the outside of the connecting pipe (1); Slip pipe (41), the inside of the control pipe (32) is slidably installed with the slip pipe (41), and both ends of the control pipe (32) are installed with the slip pipe (41); Control spring (42), the first end of the control spring (42) is against the control pipe (32), and the second end is against the slip pipe (41); Slip closure piece (5), one end of the slip pipe (41) away from the control pipe (32) is fixedly installed with the slip closure piece (5).

2. The automatic opening and closing structure of a ventilation duct according to claim 1, characterized in that: The control pipe (32) is rotatably installed on the mounting piece (31), the slip pipe (41) is keyed to the control pipe (32), the control handle (33) is rotatably installed on the connecting pipe (1), the fixed closure piece (2) and the slip closure piece (5) are both provided with a plurality of air holes (201), and after the slip closure piece (5) is rotated, the fixed closure piece (2) and the slip closure piece (5) mutually close the air holes (201).

3. The automatic opening and closing structure of a ventilation duct according to claim 2, characterized in that: The mounting piece (31) is rotatably installed with a worm wheel (61), the control pipe (32) is fixedly installed on the worm wheel (61), and the control handle (33) is installed with a worm gear (62) engaged with the worm wheel (61).

4. The automatic opening and closing structure of a ventilation duct according to claim 3, characterized in that: The side of the worm wheel (61) is divided into a worm gear area (611) and a flat area (612), and the flat area (612) is not provided with a worm gear.

5. The automatic opening and closing structure of a ventilation duct according to claim 1, characterized in that: The control pipe (32) is slidably installed on the mounting piece (31), the fixed closure piece (2) is annular, and when the slip closure piece (5) is attached to the fixed closure piece (2), the fixed closure piece (2) ring hole is closed.

6. The automatic opening and closing structure of a ventilation duct according to claim 5, characterized in that: The upper side of the control pipe (32) is fixedly installed with a fixed column (321), the fixed column (321) is rotatably connected with a transmission rod (322), the bottom of the control handle (33) is fixedly installed with an eccentric rod (323), the eccentric rod (323) is rotatably connected to one end of the transmission rod (322) away from the fixed column (321), the eccentric rod (323) is fixedly connected to the control handle (33), and the control handle (33) is rotatably installed on the connecting pipe (1).

7. The automatic opening and closing structure of a ventilation duct according to claim 6, characterized in that: The connecting pipe (1) is threadedly connected with a fixing screw (324), and the fixing screw (324) is tightly screwed against the control handle (33).

8. The automatic opening and closing structure of a ventilation duct according to any one of claims 1 to 7, characterized in that: An indication is arranged on the outside of the connecting pipe (1).

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