Partitioning device for negative pressure fan

Abstract

The zoning device comprises a main air pipe, one end of the main air pipe communicates with the negative pressure fan, the other end, away from the negative pressure fan, of the main air pipe communicates with an air distribution pipe, and a plurality of sub air pipes are arranged on the air distribution pipe; the ends, deviating from the air distribution pipe, of the multiple sub air pipes are arranged in different rooms correspondingly, and the end, deviating from the air distribution pipe, of any sub air pipe is provided with a plugging assembly capable of controlling connection and disconnection between the sub air pipe and the air distribution pipe. The negative pressure ventilation system has the advantages that one negative pressure fan can be conveniently distributed to multiple different rooms for use, and the construction and use cost of the ventilation system is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of negative pressure fan accessories, and in particular to a partitioning device for a negative pressure fan. Background Art

[0002] Negative pressure fan is a kind of ventilator, belonging to axial flow fan, which is mainly used in negative pressure ventilation and cooling projects and is called negative pressure fan. Negative pressure fan has the characteristics of large size, super large air duct, super large fan blade diameter, super large exhaust volume, ultra-low energy consumption, low speed, and low noise.

[0003] In the related art, negative pressure fans are relatively large in size. For a factory building divided into multiple small rooms, installing multiple negative pressure fans is too costly and occupies a large area. Ordinary fans cannot achieve the same effect as negative pressure fans. In order to reduce the number of negative pressure fans and reduce costs, the staff installed a negative pressure fan connected to the outside in the factory building, connected multiple air ducts on the inner air outlet of the negative pressure fan, and the other end of any air duct was set in each small room.

[0004] With respect to the above-mentioned related technologies, when the negative pressure fan is turned on, the multiple connected air ducts will connect any room with the air ducts to the outside world, realizing internal and external air exchange and cooling. However, the multiple small rooms may not all be enabled, resulting in a waste of resources. Summary of the invention

[0005] In order to facilitate the allocation of negative pressure fans to different rooms and reduce the cost of use, the present application provides a partitioning device for negative pressure fans.

[0006] The present application provides a partition device for a negative pressure fan using the following technical solution:

[0007] A partitioning device for a negative pressure fan comprises a main air duct, one end of the main air duct is connected to the negative pressure fan, the other end of the main air duct facing away from the negative pressure fan is connected to a branch air duct, a plurality of sub-air ducts are connected to the branch air duct, and the ends of the plurality of sub-air ducts facing away from the branch air duct are respectively arranged in different rooms, and a blocking component capable of controlling the on-off between the sub-air duct and the branch air duct is arranged at one end of any sub-air duct facing away from the branch air duct.

[0008] By adopting the above technical solution, the staff can control the opening and closing between the corresponding sub-duct and the branch duct by controlling any blocking component. In this way, the airflow to different rooms can be flexibly controlled. Any sub-duct can be blocked or opened as needed, so that one negative pressure fan can be conveniently allocated to multiple rooms. The partition device can improve the flexibility and control accuracy of the negative pressure fan.

[0009] Preferably, a sub-air outlet is opened on the branch air duct, and a plurality of sub-air outlets are arranged on the branch air duct. Any sub-air duct is connected to a corresponding sub-air outlet. The blocking component includes a pressure plate, which abuts against the inner wall of the branch air duct to disconnect the corresponding sub-air duct from the branch air duct. The pressure plate is also provided with a driving component for driving the pressure plate to move closer to or away from the sub-air outlet.

[0010] By adopting the above technical solution, the driving assembly drives the pressure plate to block the sub-air outlet, thereby realizing independent control of the on-off of multiple sub-air ducts. This method is helpful for the staff to operate the zoning device more conveniently.

[0011] Preferably, a sealing ring is provided at one end of the pressure plate in the thickness direction close to the sub-air outlet, and the sealing ring is pressed tightly against the inner wall of the air distribution duct.

[0012] By adopting the above-mentioned technical solution, a sealing ring is provided at one end of the pressure plate close to the sub-air outlet in the thickness direction, so as to enhance the sealing effect between the pressure plate and the inner wall of the air distribution duct, reduce the possibility of the airflow generated or extracted by the negative pressure fan overflowing from between the pressure plate and the inner wall of the air distribution duct, and help improve the safety of the entire exhaust system.

[0013] Preferably, the driving assembly comprises a driving cylinder, a cylinder body of the driving cylinder is detachably fixed on the air distribution pipe, and an end of a piston rod of the driving cylinder is fixedly connected to a pressure plate.

[0014] By adopting the above technical solution and using the driving cylinder as a driving component, the pressure plate can be stably driven and precisely positioned, thereby reliably controlling the on and off of the airflow.

[0015] Preferably, the air branch duct is further provided with a mounting opening, and a plurality of the mounting openings are provided corresponding to the sub-air outlets, and a mounting component for fixing the driving cylinder is passed through the mounting opening.

[0016] By adopting the above technical solution, the staff can directly open the sub-air outlet and the corresponding installation port on the air distribution pipe, that is, fix the driving cylinder and the pressure plate on the air distribution pipe through the installation component, connect the sub-air pipe to the sub-air outlet, and make the pressure plate fixed on the piston rod of the driving cylinder correspond to the corresponding sub-air outlet. In this way, it helps to simplify the installation steps and facilitate the staff to install the wind speed component.

[0017] Preferably, the installation component includes a fixing plate and a sealing plate, the fixing plate and the sealing plate are parallel in thickness direction, the cylinder body of the driving cylinder is located at the outside of the air branch duct, the fixing plate and the sealing plate are respectively located on both sides of the installation port, the fixing plate is located at the outside of the air branch duct, the sealing plate is located at the inside of the air branch duct, the fixing plate and the inner wall of the air branch duct are detachably fixed, the cylinder body of the driving cylinder is fixedly connected to the fixing plate, the extension and retraction direction of the piston rod of the driving cylinder is parallel to the thickness direction of the fixing plate, the piston rod of the driving cylinder passes through the fixing plate and the sealing plate along its own extension and retraction direction, the sealing plate slides with the piston rod of the driving cylinder along its own thickness direction, and a fixing component for relatively fixing the fixing plate and the sealing plate is provided on the sealing plate.

[0018] By adopting the above technical solution, the fixing plate is fixed on the outer wall of the air distribution duct, and the sealing plate is pressed onto the corresponding inner wall of the air distribution duct through the fixing component, thereby sealing the installation port and preventing the air flow from overflowing from the installation port. In this way, the air tightness can be ensured while facilitating the installation of the windage component.

[0019] Preferably, the fixing assembly is a flat-mouth buckle, and at least two of the flat-mouth buckles are arranged on the fixing plate and the sealing plate.

[0020] By adopting the above technical solution, the sealing plate and the fixing plate are relatively fixed by at least two flat-mouth buckles, and the distance between the sealing plate and the fixing plate can be adjusted within a certain thickness interval, which makes it convenient for workers to install the sealing plate and the fixing plate.

[0021] Preferably, a sealing gasket is further provided on the sealing plate, and the sealing gasket is embedded on a side surface of the sealing plate close to the fixing plate in the thickness direction of the sealing plate.

[0022] By adopting the above technical solution, the sealing gasket can further enhance the sealing effect between the sealing plate and the inner wall of the air distribution duct, thereby preventing airflow leakage and flow.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up multiple sub-ducts and controllable blocking components, the staff can independently control the connection and disconnection between each sub-duct and the branch duct to achieve flexible adjustment of the airflow in different rooms. In this way, any sub-duct can be blocked or opened as needed, so that multiple rooms can be flexibly ventilated and cooled using one negative pressure fan;

[0025] 2. The removable fixing plate and sealing plate make the installation and removal of the drive cylinder and the pressure plate more convenient. The staff can open the sub-air outlet and installation port on the air distribution pipe, and use the installation components to quickly fix the drive cylinder and the pressure plate on the air distribution pipe, which simplifies the installation steps and helps to improve the installation efficiency;

[0026] 3. The sealing ring can increase the sealing effect between the pressure plate and the inner wall of the air distribution duct, and the sealing gasket can increase the sealing effect between the sealing plate and the inner wall of the air distribution duct. In this way, the possibility of gas overflowing from the air distribution duct can be reduced, which helps to improve the safety and working efficiency of the entire exhaust system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an axonometric schematic diagram of the overall structure of the partition device for a negative pressure fan mainly embodies the embodiment of the present application;

[0028] Figure 2 It is an axonometric schematic diagram of the embodiment of the present application mainly embodying the driving assembly, the mounting assembly and the blocking assembly;

[0029] Figure 3 This is a side view of the components on the air distribution duct shown in the embodiment of the present application.

[0030] Figure 4 yes Figure 3 The enlarged view of point A in the middle mainly shows the structure of the installation components and the fixing components.

[0031] Figure numerals: 1. frame; 2. main air duct; 3. branch air duct; 31. mounting port; 32. sub-air port; 4. sub-air duct; 5. blocking assembly; 51. pressure plate; 52. sealing ring; 6. driving assembly; 61. driving cylinder; 7. mounting assembly; 71. fixing plate; 72. sealing plate; 73. sealing gasket; 8. fixing assembly; 81. flat mouth buckle; 811. hook; 812. fixing seat; 813. rotating handle; 814. ring; 9. air inlet duct. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0033] An embodiment of the present application discloses a partitioning device for a negative pressure fan.

[0034] See also Figure 1The partition device for the negative pressure fan includes a frame 1, on which a negative pressure fan is arranged. The negative pressure fan includes two air outlets, one of which is arranged outside the factory building, and the other air outlet is connected to an air inlet duct 9, and the end of the air inlet duct 9 facing away from the negative pressure fan is connected to a main air duct 2, which is arranged vertically, and a branch air duct 3 is connected to the lower end of the main air duct 2, and the branch air duct 3 is arranged horizontally. The two ends of the branch air duct 3 are respectively fixedly connected to the frame 1. A sub-air duct 4 is connected to the branch air duct 3, and a plurality of sub-air ducts 4 are arranged on the branch air duct 3 at intervals along the length direction of the branch air duct 3, and each sub-air duct 4 is respectively arranged in a different room in the factory building. In actual use, the negative pressure fan achieves the effect of ventilating multiple rooms using one negative pressure fan through the main air duct 2, the branch air duct 3 and a plurality of sub-air ducts 4.

[0035] See also Figure 1-Figure 4 , a sub-air port 32 is provided on the air branch duct 3, and a plurality of sub-air ports 32 are provided corresponding to a plurality of air branch ducts 3. A mounting port 31 is also provided on the air branch duct 3, and the mounting port 31 and the sub-air port 32 are correspondingly provided on both sides of the width direction of the air branch duct 3. A blocking component 5 is provided in any mounting port 31. A driving component 6 is also provided on the air branch duct 3, and the driving component 6 is provided as a driving cylinder 61 in this embodiment. A mounting component 7 is also provided on the air branch duct 3, and a plurality of mounting components 7 and mounting ports 31 are provided correspondingly, and any mounting component 7 is passed through the corresponding mounting port 31.

[0036] The mounting assembly 7 includes a fixing plate 71 and a sealing plate 72, both of which are arranged vertically, and the thickness directions of the fixing plate 71 and the sealing plate 72 are parallel to the width direction of the air distribution duct 3. The fixing plate 71 is located on the side of the mounting opening 31 facing away from the ion air outlet 32, and the sealing plate 72 is located on the side of the mounting opening 31 close to the sub-air outlet 32. The fixing plate 71 is fixedly connected to the side wall of the air distribution duct 3 by bolts. The cylinder body of the driving cylinder 61 is located on the side of the fixing plate 71 facing away from the sealing plate 72, and the driving cylinder 61 is arranged horizontally, and the axial direction of the piston rod of the driving cylinder 61 is parallel to the thickness direction of the fixing plate 71, and the piston rod of the driving cylinder 61 passes through the fixing plate 71 and the sealing plate 72 along its own axial direction, and the sealing plate 72 slides with the piston rod of the driving cylinder 61 along its own thickness direction.

[0037] The fixing plate 71 and the sealing plate 72 are also provided with a fixing assembly 8. In the embodiment of the present application, the fixing assembly 8 is a flat mouth buckle 81. The flat mouth buckle 81 includes a hook portion 811 and a ring portion 814. The hook portion 811 is fixed to the sealing plate 72. A fixing seat 812 and a rotating handle 813 are provided on the fixing plate 71. The fixing seat 812 is fixed to the fixing plate 71. The rotating handle 813 is rotatably connected to the fixing seat 812. The ring portion 814 is rotatably connected to the rotating handle 813. The rotation axis between the ring portion 814 and the rotating handle 813 and the rotation axis between the rotating handle 813 and the fixing seat 812 are parallel but not colinear. At least two flat mouth buckles 81 are provided on the fixing plate 71. In the present embodiment, three are provided. Three flat mouth buckles 81 are evenly spaced around the axis direction of the fixing plate 71.

[0038] See also Figure 3-Figure 4 , a sealing gasket 73 is also embedded on one side of the sealing plate 72 in the thickness direction close to the fixed plate 71. In actual use, the staff fixes the cylinder body of the driving cylinder 61 on the fixed plate 71, fixes the fixed plate 71 on the outer wall of the air distribution pipe 3, and makes the piston rod of the driving cylinder 61 pass through the installation opening 31 of the air distribution pipe 3. The staff puts the sealing plate 72 into the inner side of the air distribution pipe 3, so that the side of the sealing plate 72 provided with the hook 811 is located on the side close to the fixed plate 71, sets the sealing plate 72 on the piston rod of the driving cylinder 61, pulls the rotating handle 813, so that the hook 811 on the sealing plate 72 hooks the ring 814 on the fixed plate 71, and then presses the rotating handle 813 on the fixed plate 71, so that the sealing plate 72 is pressed against the outer wall of the air distribution pipe 3 on the side of the installation opening 31. In this way, the air tightness of the air distribution pipe 3 can be ensured while facilitating the installation of the plugging component 5. The sealing gasket 73 helps to further reduce the possibility of gas escaping from the mounting port 31 .

[0039] See also Figure 2-Figure 4 The sealing assembly 5 includes a pressure plate 51, which is fixed on the end of the piston rod of the driving cylinder 61. In the present embodiment, it is fixed by bolts. The thickness direction of the pressure plate 51 is parallel to the width direction of the branch air duct 3, and the area of ​​any side of the pressure plate 51 in its own thickness direction is larger than the cross-sectional area of ​​the sub-air outlet 32 ​​along the length direction of the pressure plate 51. A sealing ring 52 is embedded on the side surface of the pressure plate 51 facing away from the ion air outlet 32. In actual use, the staff controls the driving cylinder 61 to extend and retract the piston rod of the driving cylinder 61, thereby driving the pressure plate 51 to approach or move away from the inner wall of the branch air duct 3 where the sub-air outlet 32 ​​is provided. In this way, it is convenient for the staff to control the on-off between the sub-air duct 4 and the branch air duct 3, so as to facilitate the staff to control the room connected to the negative pressure fan, thereby helping to improve the practicality of the negative pressure fan and reduce the ventilation cost of the factory.

[0040] The implementation principle of a partition device for a negative pressure fan in the embodiment of the present application is as follows: the staff increases the number of sub-air ports 32 and mounting ports 31 on the branch air duct 3 according to the number of rooms that need to be connected to the negative pressure fan, and sets the blocking component 5 in the branch air duct 3 through the mounting component 7 and the driving component 6, and can control the connection and disconnection of the sub-air duct 4 with the branch air duct 3 by controlling the driving component 6. In this way, it is convenient for the staff to control each sub-air duct 4, and at the same time helps to improve the usability and practicality of the partition device, which can reduce the cost of the entire exhaust system and improve the safety and work efficiency of the exhaust system.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A partition device for a negative pressure fan, characterized in that: The invention comprises a main air duct (2), one end of the main air duct (2) being connected to a negative pressure fan, the other end of the main air duct (2) facing away from the negative pressure fan being connected to a branch air duct (3), a plurality of sub-air ducts (4) being arranged on the branch air duct (3), the ends of the plurality of sub-air ducts (4) facing away from the branch air duct (3) being arranged in different rooms, and a blocking component (5) capable of controlling the connection between the sub-air duct (4) and the branch air duct (3) being arranged on the end of any sub-air duct (4) facing away from the branch air duct (3); a sub-air port (32) being provided on the branch air duct (3), the sub-air port (32) being arranged on the branch air duct (3) is provided with a plurality of sub-air ducts (4), any of which is connected to a corresponding sub-air outlet (32), the blocking component (5) comprising a pressing plate (51), the pressing plate (51) abutting against the inner wall of the branch air duct (3) so that the corresponding sub-air duct (4) is disconnected from the branch air duct (3), and the pressing plate (51) is also provided with a driving component (6) for driving the pressing plate (51) to move closer to or away from the sub-air outlet (32); a sealing ring (52) is provided at one end of the pressing plate (51) in the thickness direction close to the sub-air outlet (32), and the sealing ring (52) is tightly abutted against the inner wall of the branch air duct (3).

2. A partition device for a negative pressure fan according to claim 1, characterized in that: The driving assembly (6) comprises a driving cylinder (61), the cylinder body of the driving cylinder (61) being detachably fixed on the air distribution pipe (3), and the end of the piston rod of the driving cylinder (61) being fixedly connected to the pressure plate (51).

3. A partitioning device for a negative pressure fan according to claim 2, characterized in that: The air distribution pipe (3) is also provided with a mounting opening (31), a plurality of the mounting openings (31) are provided corresponding to the sub-air openings (32), and a mounting assembly (7) for fixing the driving cylinder (61) is inserted into the mounting opening (31).

4. A partition device for a negative pressure fan according to claim 3, characterized in that: The mounting assembly (7) comprises a fixing plate (71) and a sealing plate (72), wherein the fixing plate (71) and the sealing plate (72) are parallel in thickness direction, the cylinder body of the driving cylinder (61) is located outside the air distribution pipe (3), the fixing plate (71) and the sealing plate (72) are respectively located on both sides of the mounting opening (31), the fixing plate (71) is located outside the air distribution pipe (3), the sealing plate (72) is located inside the air distribution pipe (3), the sealing plate (72) is detachably fixed to the inner wall of the air distribution pipe (3), and the driving cylinder (61) is located outside the air distribution pipe (3). The cylinder body of the driving cylinder (61) is fixedly connected to the fixed plate (71); the extension and retraction direction of the piston rod of the driving cylinder (61) is parallel to the thickness direction of the fixed plate (71); the piston rod of the driving cylinder (61) passes through the fixed plate (71) and the sealing plate (72) along its own extension and retraction direction; the sealing plate (72) is slidably matched with the piston rod of the driving cylinder (61) along its own thickness direction; and a fixing component (8) is provided on the sealing plate (72) for fixing the fixed plate (71) and the sealing plate (72) relatively.

5. A partition device for a negative pressure fan according to claim 4, characterized in that: The fixing assembly (8) is a flat-mouth buckle (81), and at least two of the flat-mouth buckles (81) are provided on the fixing plate (71) and the sealing plate (72).

6. A partitioning device for a negative pressure fan according to claim 5, characterized in that: The sealing plate (72) is also provided with a sealing gasket (73), and the sealing gasket (73) is embedded on a side surface of the sealing plate (72) close to the fixing plate (71) in the thickness direction.

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