Sealing mechanism for ventilation

Abstract

The sealing mechanism comprises a mounting frame assembly, a door plate set, a filter screen and a protective cover, the mounting frame assembly is formed by sequentially and fixedly connecting a top beam, a left side beam, a bottom beam and a right side beam end to end, and a pneumatic control device is arranged on the left side beam; the door plate set comprises a plurality of bearing seats installed on the side wall of the left side beam and the side wall of the right side beam respectively, supporting shafts are rotationally installed between the bearing seats, and shutters are installed on the supporting shafts. The left side beam and the right side beam are arranged on the left side beam, the right side beam is arranged on the right side beam, the filter screen is arranged on the left side beam and the right side beam, the protective cover is arranged on the outer wall of the right side beam, and a transmission plate set is arranged on the multiple supporting shafts and located between the right side beam and the protective cover. And the sealing mechanism is small in occupied space and size, and does not occupy space except for the device when being opened and closed.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation systems, and specifically to a sealing mechanism for ventilation. Background Art

[0002] The ventilation ducts in ventilation systems are usually open, which is convenient for sufficient ventilation during use. However, when not in use, sundries usually enter the ventilation ducts, affecting the ventilation equipment. To solve this problem, a metal mesh is usually added at the opening of the ventilation duct to block the entry of sundries. However, in actual use, if the mesh size is small, it will affect the ventilation; if the mesh size is large, the effect of filtering sundries is not good, so it is inconvenient to use. The sealing mechanism designed in this design scheme is usually used for natural intake and exhaust of large-sized ventilation systems, is opened when ventilation is required, and is closed when protection is required, which can effectively prevent sundries from entering the ventilation ducts. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a sealing mechanism for ventilation, which solves the problem that sundries easily enter the existing ventilation ducts.

[0004] To achieve the above purposes, the present invention is realized through the following technical solutions: A sealing mechanism for ventilation, comprising a mounting frame assembly, a door panel group, a filter screen and a protective cover:

[0005] The mounting frame assembly is formed by sequentially and fixedly connecting a top beam, a left side beam, a bottom beam and a right side beam end to end, and a pneumatic control device is provided on the left side beam;

[0006] The door panel group includes a plurality of bearing seats respectively installed on the side walls of the left side beam and the right side beam. A support shaft is rotatably installed between the plurality of bearing seats, and a plurality of louvers are installed on each of the support shafts;

[0007] The filter screen is installed on the left side beam and the right side beam, the protective cover is installed on the outer wall of the right side beam, and a transmission plate group is provided between the plurality of support shafts and between the right side beam and the protective cover.

[0008] Preferably, the pneumatic control device includes a mounting bracket installed on the left side beam. A cylinder body is installed on the mounting bracket, and a cylinder end cover, a signal sensor and a cylinder piston are provided on the cylinder body. A manual gear shaft rod and a gear shaft are respectively installed at the input end and the output end of the cylinder body, and a link mechanism is connected between the gear shaft and the bearing seat on the left side beam.

[0009] Preferably, the transmission plate group includes transmission cranks respectively installed on a plurality of support shafts. A transmission link is rotatably installed on the plurality of transmission cranks, and a first hinge is provided between the plurality of transmission cranks and the transmission link.

[0010] Preferably, the link mechanism includes a driving crank mounted on a gear shaft, a connecting rod rotatably connected to the driving crank, a driven rocker rotatably connected to the connecting rod, the driven rocker being connected to a support shaft, and a second hinge being provided between the driving crank and the connecting rod.

[0011] Advantageous Effects

[0012] The present invention provides a sealing mechanism for ventilation, having the following advantageous effects:

[0013] 1. This design provides a sealing mechanism that can satisfy both the wind and rain prevention and sealing in a natural atmospheric environment and the self-locking of the mechanism for opening and closing. It occupies a small space and volume, and neither the opening nor the closing occupies space outside the device.

[0014] When opening, when the door panel group needs to be opened, compressed air is introduced into one end of the pneumatic control device. The cylinder piston and the gear shaft are connected by a rack and pinion. The compressed air acts to push the chamber piston to drive the gear shaft 4-7 to rotate. The gear shaft and the driving crank in the link mechanism are connected by a key, and the door panel group and the driven rocker in the link mechanism are connected by a key. By rotating the gear shaft, the driving crank is driven to rotate, and the driving crank drives the driven rocker to rotate, thereby driving the door panel group 2 to open and completing the opening of the mechanism.

[0015] When closing, when the door panel group needs to be closed, compressed air is introduced into the other end of the pneumatic control device. The cylinder piston and the gear shaft are connected by a rack and pinion. The compressed air acts to push the chamber piston to drive the gear shaft to rotate. The gear shaft and the driving crank in the link mechanism are connected by a key, and the door panel group and the driven rocker in the link mechanism are connected by a key. By rotating the gear shaft, the driving crank 3-1 is driven to rotate, and the driving crank drives the driven rocker to rotate, thereby driving the door panel group to close and completing the closing of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an isometric view of the present invention.

[0017] Figure 2 is a schematic structural composition view of the present invention.

[0018] Figure 3 is a schematic structural composition view of the mounting frame assembly of the present invention.

[0019] Figure 4 is a schematic structural composition view of the door panel group of the present invention.

[0020] Figure 5 is a schematic structural composition view of the link mechanism of the present invention.

[0021] Figure 6 is a schematic structural composition view of the pneumatic control device of the present invention.

[0022] Figure 7 This is a schematic diagram of the structural composition of the filter net of the present invention.

[0023] Figure 8 This is a schematic diagram of the structural composition of the drive plate group of the present invention.

[0024] Figure 9 This is a schematic diagram of the structural composition of the protective cover of the present invention.

[0025] Figure 10 This is a side view of the door panel group of the present invention.

[0026] Figure 11 This is an installation schematic diagram of the pneumatic control device of the present invention.

[0027] Figure 12 This is an installation schematic diagram of the drive plate group of the present invention.

[0028] Figure 13 This is an installation schematic diagram of the door panel group of the present invention.

[0029] Figure 14 This is a schematic diagram when the dead point is locked in the "closed" position of the present invention.

[0030] Figure 15 This is a schematic diagram of the dead point lock in the "open" position of the present invention.

[0031] In the figure: 1. Mounting frame assembly; 1-1. Top beam; 1-2. Left side beam; 1-3. Bottom beam; 1-4. Right side beam; 2. Door panel group; 2-1. Bearing seat; 2-2. Louvers; 3. Linkage mechanism; 3-1. Driving crank; 3-2. Hinge group; 3-3. Link; 3-4. Driven rocker; 4. Pneumatic control device; 4-1. Cylinder end cover; 4-2. Cylinder body; 4-3. Signal sensor; 4-4. Manual gear shaft rod; 4-5. Mounting bracket; 4-6. Cylinder piston; 4-7. Gear shaft; 5. Filter net; 6. Drive plate group; 6-1. Driving crank; 6-2. Driving link; 6-3. Hinge; 7. Protective cover. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-15 , the present invention provides a technical solution: a closed mechanism for ventilation, including a mounting frame assembly 1, a door panel group 2, a filter net 5 and a protective cover 7:

[0034] The mounting frame assembly 1 is formed by fixedly connecting a top beam 1-1, a left beam 1-2, a bottom beam 1-3, and a right beam 1-4 in sequence from beginning to end. An air control device 4 is provided on the left beam 1-2;

[0035] The door panel group 2 includes a plurality of bearing seats 2-1 respectively installed on the side walls of the left beam 1-2 and the right beam 1-4. A support shaft is rotatably installed between the plurality of bearing seats 2-1, and a plurality of louvers 2-2 are installed on each of the support shafts;

[0036] The filter screen 5 is installed on the left beam 1-2 and the right beam 1-4, the protective cover 7 is installed on the outer wall of the right beam 1-4, and a transmission plate group 6 is provided between the plurality of support shafts and between the right beam 1-4 and the protective cover 7;

[0037] The door panel group 2 is designed with an S-shaped structure, which can effectively isolate wind and rain and achieve the wind and rain tightness of the sealing mechanism;

[0038] The connection between the mounting frame assembly 1 and the door panel group 2 is through the bolt connection between the bearing seat 2-1 and the mounting frame assembly 1, which is installed and fixed and can rotate;

[0039] The filter screen 5 is installed and fixed to the mounting frame assembly 1 by bolt connection;

[0040] The protective cover 7 is installed and fixed to the mounting frame assembly 1 by bolt connection.

[0041] Further, the air control device 4 includes a mounting bracket 4-5 installed on the left beam 1-2. A cylinder block 4-2 is installed on the mounting bracket 4-5. A cylinder end cover 4-1, a signal sensor 4-3, and a cylinder piston 4-6 are provided on the cylinder block 4-2. A manual gear shaft rod 4-4 and a gear shaft 4-7 are respectively installed on the input end and the output end of the cylinder block 4-2. A link mechanism 3 is connected between the gear shaft 4-7 and the bearing seat 2-1 on the left beam 1-2;

[0042] The air control device 4 is installed and fixed to the mounting frame assembly 1 through the mounting bracket 4-5 by bolt connection;

[0043] The cylinder conduction in the air control device 4 belongs to a conventional technical means and is a common device in the mechanical field. The present design uses its transmission control function, and what is used is the existing mature technology. This is not the research focus of the present design, so there is no need to introduce the specific structure and usage method of the cylinder block 4-2 in detail.

[0044] Further, the transmission plate group 6 includes transmission cranks 6-1 respectively installed on a plurality of support shafts. A transmission connecting rod 6-2 is rotatably installed on the plurality of transmission cranks 6-1. A first hinge 6-3 is provided between the plurality of transmission cranks 6-1 and the transmission connecting rod 6-2;

[0045] The opening and closing self-locking of the door panel is achieved through the "dead center position" of the link mechanism.

[0046] Further, the link mechanism 3 includes a driving crank 3-1 mounted on the gear shaft 4-7. A connecting rod 3-3 is rotatably connected to the driving crank 3-1. A driven rocker 3-4 is rotatably connected to the connecting rod 3-3. The driven rocker 3-4 is connected to the support shaft. A second hinge 3-2 is provided between the driving crank 3-1 and the connecting rod 3-3.

[0047] In the link structure 3, the driven rocker 3-4 and the door panel group 2, and the driving crank 3-1 and the pneumatic control device 4 are both key-connected to transmit torque and meet the self-locking during opening and closing.

[0048] Those skilled in the art should connect the components in this case in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.

[0049] Embodiment:

[0050] 1. Opening action

[0051] When the door panel group 2 needs to be opened, compressed air is introduced into one end of the pneumatic control device 4. The cylinder piston 4-6 and the gear shaft 4-7 are connected by a rack and pinion. Driven by the compressed air, the piston 4-6 in the chamber drives the gear shaft 4-7 to rotate. The gear shaft 4-7 and the driving crank 3-1 in the link mechanism 3 are key-connected. The door panel group 2 and the driven rocker 3-4 in the link mechanism 3 are key-connected. By the rotation of the gear shaft 4-7, the driving crank 3-1 is driven to rotate, and the driving crank 3-1 drives the driven rocker 3-4 to rotate, thereby driving the door panel group 2 to open until the "open dead center" position. The mechanism opening and self-locking are completed.

[0052] 2. Closing action

[0053] When the door panel group 2 needs to be closed, compressed air is introduced into the other end of the pneumatic control device 4. The cylinder piston 4-6 and the gear shaft 4-7 are connected by a rack and pinion. Driven by the compressed air, the piston 4-6 in the chamber drives the gear shaft 4-7 to rotate. The gear shaft 4-7 and the driving crank 3-1 in the link mechanism 3 are key-connected. The door panel group 2 and the driven rocker 3-4 in the link mechanism 3 are key-connected. By the rotation of the gear shaft 4-7, the driving crank 3-1 is driven to rotate, and the driving crank 3-1 drives the driven rocker 3-4 to rotate, thereby driving the door panel group 2 to close until the "closing dead center" position. The mechanism closing and self-locking are completed.

[0054] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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 "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airtight mechanism for ventilation, characterized in that, It includes a mounting frame assembly (1), a door panel group (2), a filter screen (5), and a protective cover (7): The mounting frame assembly (1) is formed by fixedly connecting a top beam (1-1), a left side beam (1-2), a bottom beam (1-3), and a right side beam (1-4) in sequence end to end. An air control device (4) is provided on the left side beam (1-2); The door panel group (2) includes a plurality of bearing seats (2-1) respectively installed on the side walls of the left side beam (1-2) and the right side beam (1-4). A support shaft is rotatably installed between the plurality of bearing seats (2-1), and a plurality of louvers (2-2) are installed on the plurality of support shafts; The filter screen (5) is installed on the left side beam (1-2) and the right side beam (1-4), the protective cover (7) is installed on the outer wall of the right side beam (1-4), and a transmission plate group (6) is provided between the plurality of support shafts and between the right side beam (1-4) and the protective cover (7).

2. The airtight mechanism for ventilation according to claim 1, characterized in that, The air control device (4) includes a mounting bracket (4-5) installed on the left side beam (1-2). A cylinder block (4-2) is installed on the mounting bracket (4-5). A cylinder end cover (4-1), a signal sensor (4-3), and a cylinder piston (4-6) are provided on the cylinder block (4-2). A manual gear shaft rod (4-4) and a gear shaft (4-7) are respectively installed at the input end and the output end of the cylinder block (4-2). A link mechanism (3) is connected between the gear shaft (4-7) and the bearing seat (2-1) on the left side beam (1-2).

3. The airtight mechanism for ventilation according to claim 1, characterized in that, The transmission plate group (6) includes transmission cranks (6-1) respectively installed on a plurality of support shafts. A transmission connecting rod (6-2) is rotatably installed on the plurality of transmission cranks (6-1). A first hinge (6-3) is provided between the plurality of transmission cranks (6-1) and the transmission connecting rod (6-2).

4. The airtight mechanism for ventilation according to claim 2, characterized in that, The link mechanism (3) includes a driving crank (3-1) installed on the gear shaft (4-7). A connecting rod (3-3) is rotatably connected to the driving crank (3-1). A driven rocker (3-4) is rotatably connected to the connecting rod (3-3). The driven rocker (3-4) is connected to the support shaft. A second hinge (3-2) is provided between the driving crank (3-1) and the connecting rod (3-3).

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