Closing mechanism for air intake and exhaust vent

Abstract

The closing mechanism comprises a bottom plate group, a self-locking air cylinder and a pair of door groups, the bottom plate group comprises a mounting plate, two pairs of limiting seats and a pair of openings are arranged on the mounting plate, and a pair of bevel gear shafts is rotationally mounted on the mounting plate; a pair of gear shaft sets are installed on the two pairs of limiting seats, the pair of door sets are located on the pair of gear shaft sets correspondingly, and each door set comprises a valve plate and a supporting arm; a pneumatic assembly and a double-linkage self-locking mechanism are installed on one side of the installation plate, the self-locking air cylinder is firstly inflated with compressed air for unlocking, the bevel gear shaft set drives the gear shaft to rotate, the gear shaft drives the door set to be opened, and equipment is opened and self-locked; compressed air is introduced into the other end of the pneumatic assembly, the bevel gear shaft set drives the gear shaft set to rotate, the gear shaft drives the door set to be opened, equipment closing and self-locking are completed, the sealing performance of the large ventilation area can be met, and mechanism opening and closing self-locking can also be met.

Description

Technical Field

[0001] This utility model relates to the field of ventilation system technology, specifically to a closing mechanism for air inlet and outlet ventilation ports. Background Technology

[0002] This ventilation device is mainly used to quickly cut off and connect the air intake and exhaust vents through rapid opening and closing. The ventilation ducts in existing ventilation systems are usually open, which makes it easy for debris to enter and affect the internal structure of the ventilation system. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a closing mechanism for air inlets and outlets, which solves the problem of debris easily entering existing open ventilation ducts.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a closing mechanism for the intake and exhaust ventilation ports, comprising a base plate assembly, a self-locking cylinder, and a pair of door assemblies. The base plate assembly includes a mounting plate, on which two pairs of limit seats and a pair of openings are provided, and a pair of bevel gear shafts are rotatably mounted.

[0005] A pair of gear shafts are installed on the two pairs of limiting seats, and a pair of door groups are respectively located on the pair of gear shaft groups. The door group includes a valve plate and a support arm.

[0006] A pneumatic assembly and a double-linkage self-locking mechanism are installed on one side of the mounting plate, and the self-locking cylinder is mounted on the mounting plate.

[0007] Preferably, the gear shaft assembly includes a shaft bracket mounted on a limiting seat, a drive shaft rotatably mounted inside the shaft bracket, a pair of swing rods mounted on the drive shaft and one end connected to a tenon coupling, a bearing base provided on the mounting plate, a bevel gear drive shaft rotatably mounted on the bearing base, the bevel gear drive shaft having a conical tooth surface meshing with the conical tooth surface of the bevel gear shaft, one end of the bevel gear drive shaft being connected to the tenon coupling, and a support arm fixedly mounted on a valve plate, the support arm being connected to the swing rods.

[0008] Preferably, the pneumatic assembly includes a cylinder body mounted on a mounting plate. The cylinder body is provided with a cylinder piston, an explosion-proof wiring adapter box, a pair of protective cover mounting plates, a manual gear shaft, an explosion-proof signal sensor, a cylinder end cover, and a gear shaft. A safety protective cover is mounted on the pair of protective cover mounting plates.

[0009] Preferably, the double-linkage self-locking mechanism includes a driving crank mounted on a gear shaft, a pair of connecting rods hinged to both ends of the driving crank, a driven rocker arm and a self-locking driven rocker arm respectively connected to the pair of connecting rods, a hinge pin inserted between the driving crank and the connecting rods, and the driven rocker arm and the self-locking driven rocker arm respectively mounted on one end of a pair of bevel gear shafts.

[0010] Preferably, a valve seat sealing ring is provided on each of the pair of openings, and the pair of valve plates are respectively located inside the pair of valve seat sealing rings.

[0011] Preferably, the output end of the self-locking cylinder is connected to the input end of the cylinder body.

[0012] Preferably, a protective railing is installed on the mounting plate.

[0013] Beneficial effects

[0014] This utility model provides a closing mechanism for air inlet and outlet ventilation ports, which has the following beneficial effects:

[0015] 1. Start the action

[0016] When the door assembly needs to be opened, compressed air is first introduced into the self-locking cylinder to unlock it. After unlocking, compressed air is introduced into one end of the pneumatic assembly. The cylinder piston and the gear shaft are connected by a gear and rack. The compressed air pushes the chamber piston to drive the gear shaft to rotate. The gear shaft is connected to the driving crank in the double linkage self-locking mechanism by a key. The bevel gear shaft is connected to the driven rocker arm in the double linkage self-locking mechanism by a key. The rotation of the gear shaft drives the driving crank to rotate, which in turn drives the bevel gear shaft assembly to rotate. The bevel gear shaft assembly drives the gear shaft to rotate, and the gear shaft drives the door assembly to open, thus completing the opening and self-locking of the equipment.

[0017] 2. Closing action

[0018] When the door assembly needs to close, compressed air is introduced to the other end of the pneumatic component. The cylinder piston is connected to the gear shaft via a rack and pinion mechanism. The compressed air pushes the piston in the chamber, causing the gear shaft to rotate. The gear shaft is keyed to the driving crank in the double-linkage self-locking mechanism, and the bevel gear shaft is keyed to the driven rocker arm in the same mechanism. The rotation of the gear shaft drives the driving crank, which in turn drives the bevel gear shaft assembly to rotate. This, in turn, drives the gear shaft assembly to rotate, ultimately opening the door assembly and completing the closure and self-locking process. This ventilation device satisfies both the sealing performance requirements of a large ventilation area and the self-locking mechanism during opening and closing. Attached Figure Description

[0019] Figure 1 This is an isometric view of the present invention.

[0020] Figure 2 This is a schematic diagram of the structural composition of this utility model.

[0021] Figure 3 This is a schematic diagram of the structural composition of the base plate assembly of this utility model.

[0022] Figure 4 This is a schematic diagram of the structural composition of the starting component of this utility model.

[0023] Figure 5 This is a schematic diagram of the structural composition of the gear shaft assembly of this utility model.

[0024] Figure 6 This is a schematic diagram of the structural composition of the door assembly of this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the double-linkage self-locking mechanism of this utility model.

[0026] Figure 8 This is a schematic diagram of the self-locking cylinder of this utility model.

[0027] Figure 9 This is a schematic diagram of the structure of the safety protective cover of this utility model.

[0028] Figure 10 This is a schematic diagram of the dead-point locking of the "open" position of the double-linkage self-locking mechanism of this utility model.

[0029] Figure 11 This is a schematic diagram of the "closed" position dead point locking of the double linkage self-locking mechanism of this utility model.

[0030] Figure 12 This is a schematic diagram of the bolt connection between the base plate assembly and the pneumatic components of this utility model.

[0031] Figure 13 This is a schematic diagram showing the connection between the pneumatic component and the double-linkage self-locking mechanism of this utility model.

[0032] Figure 14 This is a schematic diagram showing the connection between the double-linkage self-locking mechanism and the base plate assembly of this utility model.

[0033] Figure 15 This is a schematic diagram showing the connection between the gear shaft and the base plate assembly of this utility model, which is a bevel gear transmission.

[0034] Figure 16 This is a schematic diagram showing the connection between the gear shaft assembly and the gate assembly of this utility model.

[0035] In the diagram: 1. Base plate assembly; 1-1. Mounting plate; 1-2. Valve seat seal ring; 1-3. Limit seat; 1-4. Bevel gear shaft; 2. Pneumatic assembly; 2-1. Explosion-proof wiring adapter box; 2-2. Protective cover mounting plate; 2-3. Manual gear shaft; 2-4. Explosion-proof signal sensor; 2-5. Cylinder body; 2-6. Cylinder end cover; 2-7. Cylinder piston; 2-8. Gear shaft; 3. Gear shaft assembly; 3-1. Shaft support; 3-2. Drive shaft; 3-3. Swing rod; 3-4. Tenon coupling; 3-5. Bevel gear drive shaft; 4. Door assembly; 4-1. Valve plate; 4-2. Support arm; 5. Double linkage self-locking mechanism; 5-1. Driven rocker arm; 5-2. Connecting rod; 5-3. Drive crank; 5-4. Hinge pin; 5-5. Self-locking driven rocker arm; 6. Self-locking cylinder; 7. Safety guard; 8. Guardrail. Detailed Implementation

[0036] 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.

[0037] Please see Figure 1-15 The present invention provides a technical solution: a closing mechanism for an air intake and exhaust vent, comprising a base plate assembly 1, a self-locking cylinder 6, and a pair of door assemblies 4. The base plate assembly 1 includes a mounting plate 1-1, on which two pairs of limiting seats 1-3 and a pair of openings are provided and a pair of bevel gear shafts 1-4 are rotatably mounted.

[0038] A pair of gear shaft groups 3 are installed on the two pairs of limiting seats 1-3, and a pair of door groups 4 are respectively located on the pair of gear shaft groups 3. The door group 4 includes a valve plate 4-1 and a support arm 4-2.

[0039] A pneumatic assembly 2 and a double-linkage self-locking mechanism 5 are installed on one side of the mounting plate 1-1, and the self-locking cylinder 6 is installed on the mounting plate 1-1;

[0040] The valve seat sealing ring of the door panel seal is made of rubber with high strength and hardness. The self-locking mechanism ensures that the sealing rubber has a suitable amount of compression when closed. When the door panel is subjected to pressure from the side or inside of the door panel, the door panel is pressed on the sealing ring, ensuring the sealing function in both directions.

[0041] The dual-linkage self-locking mechanism can both transmit power and achieve door opening and closing self-locking through the "dead point position".

[0042] Furthermore, the gear shaft assembly 3 includes a shaft bracket 3-1 mounted on the limiting seat 1-3. A transmission shaft 3-2 is rotatably mounted inside the shaft bracket 3-1. A pair of swing rods 3-3 are mounted on the transmission shaft 3-2, and one end is connected to a tenon coupling 3-4. A bearing base is provided on the mounting plate 1-1. A bevel gear transmission shaft 3-5 is rotatably mounted on the bearing base. The bevel gear transmission shaft 3-5 has a conical tooth surface that meshes with the conical tooth surface of the bevel gear shaft 1-4. One end of the bevel gear transmission shaft 3-5 is connected to the tenon coupling 3-4. The support arm 4-2 is fixedly mounted on the valve plate 4-1 and is connected to the swing rods 3-3.

[0043] Furthermore, the pneumatic assembly 2 includes a cylinder body 2-5 mounted on a mounting plate 1-1. The cylinder body 2-5 is provided with a cylinder piston 2-7, an explosion-proof wiring adapter box 2-1, a pair of protective cover mounting plates 2-2, a manual gear shaft 2-3, an explosion-proof signal sensor 2-4, a cylinder end cover 2-6, and a gear shaft 2-8. A safety protective cover 7 is mounted on the pair of protective cover mounting plates 2-2.

[0044] The cylinder body 2-5 and its internal structure used in the pneumatic component 2 are existing mature equipment, mainly used to drive the rotation of the double linkage self-locking mechanism 5. This application method is a conventional technical means, so there is no need to describe its operation method and specific structure in detail.

[0045] Furthermore, the double-linkage self-locking mechanism 5 includes an active crank 5-3 mounted on a gear shaft 2-8. A pair of connecting rods 5-2 are hinged to both ends of the active crank 5-3. A driven rocker arm 5-1 and a self-locking driven rocker arm 5-5 are respectively connected to the pair of connecting rods 5-2. A hinge pin 5-4 is inserted between the active crank 5-3 and the connecting rods 5-2. The driven rocker arm 5-1 and the self-locking driven rocker arm 5-5 are respectively fitted onto one end of a pair of bevel gear shafts 1-4.

[0046] Furthermore, valve seat sealing rings 1-2 are provided on each of the pair of openings, and the pair of valve plates 4-1 are respectively located inside the pair of valve seat sealing rings 1-2.

[0047] Furthermore, the output end of the self-locking cylinder 6 is connected to the input end of the cylinder body 2-5.

[0048] Furthermore, a protective railing 8 is installed on the mounting plate 1-1.

[0049] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0050] Example:

[0051] 1. Start the action

[0052] When door panel 2 needs to be opened, compressed air is introduced into one end of the pneumatic control device 4. The cylinder piston 4-6 is connected to the gear shaft 4-7 by a rack and pinion mechanism. The compressed air pushes the piston 4-6, causing the gear shaft 4-7 to rotate. The gear shaft 4-7 is keyed to the driving crank 3-1 in the linkage mechanism 3, and the door panel 2 is keyed to the driven rocker arm 3-4 in the linkage mechanism 3. The rotation of the gear shaft 4-7 drives the driving crank 3-1 to rotate, which in turn drives the driven rocker arm 3-4 to rotate, thereby opening the door panel 2 until it reaches the "open dead center" position. This completes the opening and self-locking of the mechanism.

[0053] 2. Closing action

[0054] When door panel 2 needs to be closed, compressed air is introduced into the other end of the pneumatic control device 4. The cylinder piston 4-6 is connected to the gear shaft 4-7 by a rack and pinion mechanism. The compressed air pushes the piston 4-6 to rotate the gear shaft 4-7. The gear shaft 4-7 is keyed to the driving crank 3-1 in the linkage mechanism 3, and the door panel 2 is keyed to the driven rocker arm 3-4 in the linkage mechanism 3. The rotation of the gear shaft 4-7 drives the driving crank 3-1 to rotate, which in turn drives the driven rocker arm 3-4 to rotate, thereby closing the door panel 2 until it reaches the "closed dead point" position. This completes the closing and self-locking of the mechanism.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A closing mechanism for intake and exhaust vents, comprising a base plate assembly (1), a self-locking cylinder (6), and a pair of door assemblies (4), characterized in that: The base plate assembly (1) includes a mounting plate (1-1), on which two pairs of limiting seats (1-3) and a pair of openings are provided and a pair of bevel gear shafts (1-4) are rotatably mounted; A pair of gear shaft groups (3) are installed on the two pairs of limiting seats (1-3), and a pair of door groups (4) are respectively located on the pair of gear shaft groups (3). The door group (4) includes a valve plate (4-1) and a support arm (4-2). A pneumatic assembly (2) and a double-linkage self-locking mechanism (5) are installed on one side of the mounting plate (1-1), and the self-locking cylinder (6) is installed on the mounting plate (1-1).

2. The closing mechanism for the air intake and exhaust vents according to claim 1, characterized in that, The gear shaft assembly (3) includes a shaft bracket (3-1) mounted on a limiting seat (1-3). A transmission shaft (3-2) is rotatably mounted inside the shaft bracket (3-1). A pair of swing rods (3-3) are mounted on the transmission shaft (3-2), and one end is connected to a tenon coupling (3-4). A bearing base is provided on the mounting plate (1-1). A bevel gear transmission shaft (3-5) is rotatably mounted on the bearing base. The bevel gear transmission shaft (3-5) meshes with the bevel gear shaft (1-4). One end of the bevel gear transmission shaft (3-5) is connected to the tenon coupling (3-4). A support arm (4-2) is fixedly mounted on a valve plate (4-1). The support arm (4-2) is connected to the swing rod (3-3).

3. The closing mechanism for the air intake and exhaust vents according to claim 1, characterized in that, The pneumatic assembly (2) includes a cylinder body (2-5) mounted on a mounting plate (1-1). The cylinder body (2-5) is provided with a cylinder piston (2-7), an explosion-proof wiring adapter box (2-1), a pair of protective cover mounting plates (2-2), a manual gear shaft (2-3), an explosion-proof signal sensor (2-4), a cylinder end cover (2-6), and a gear shaft (2-8). A safety protective cover (7) is mounted on the pair of protective cover mounting plates (2-2).

4. The closing mechanism for the air intake and exhaust vents according to claim 3, characterized in that, The double-linkage self-locking mechanism (5) includes an active crank (5-3) mounted on a gear shaft (2-8). A pair of connecting rods (5-2) are hinged to both ends of the active crank (5-3). A driven rocker (5-1) and a self-locking driven rocker (5-5) are respectively connected to the pair of connecting rods (5-2). A hinge pin (5-4) is inserted between the active crank (5-3) and the connecting rods (5-2). The driven rocker (5-1) and the self-locking driven rocker (5-5) are respectively mounted on one end of a pair of bevel gear shafts (1-4).

5. The closing mechanism for the air intake and exhaust vents according to claim 1, characterized in that, A pair of openings are provided with valve seat sealing rings (1-2), and a pair of valve plates (4-1) are respectively located inside a pair of valve seat sealing rings (1-2).

6. The closing mechanism for the air intake and exhaust vents according to claim 1, characterized in that, The output end of the self-locking cylinder (6) is connected to the input end of the cylinder body (2-5).

7. The closing mechanism for the air intake and exhaust vents according to claim 1, characterized in that, A guardrail (8) is installed on the mounting plate (1-1).

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