Double-layer negative pressure liquid tank sealing laminar flow hood device

Abstract

The utility model discloses a double-layer negative pressure liquid tank sealing laminar flow hood device, and belongs to the field of laminar flow hoods, the double-layer negative pressure liquid tank sealing laminar flow hood device comprises a laminar flow hood box body, a lifting mechanism is arranged at the top of the laminar flow hood box body, a fan static pressure box is slidably connected in the laminar flow hood box body, and a connecting mechanism is arranged between the fan static pressure box and the laminar flow hood box body; by arranging the sealing rubber strip, the limiting block, the mounting frame and the spring, the spring is supported through the mounting frame, then the limiting block is supported through the spring, the sealing rubber strip is limited through the limiting block, and then the connecting position of the fan static pressure box and the fixing frame is sealed through the sealing rubber strip; the air pressure between the laminar flow hood box body and the fan static pressure box is smaller than the air pressure in the fan static pressure box, the negative pressure sealing effect is achieved, the problem that when an existing laminar flow hood filters air through a filter, due to poor sealing performance, indoor air entering a hood body leaks to the air outlet side without a high-efficiency filter is solved, and practicability is improved.

Description

Technical Field

[0001] This application relates to the technical field of laminar flow hoods, and particularly to a double-layer negative pressure liquid tank sealed laminar flow hood device. Background Art

[0002] A laminar flow hood forms a uniform flow layer by passing air through a high-efficiency filter at a certain wind speed, enabling the clean air to flow vertically and unidirectionally, thus ensuring a high level of cleanliness in the working plant area.

[0003] Currently, when the existing laminar flow hood filters air through the filter, due to poor sealing performance, the indoor air entering the hood leaks to the air outlet side without passing through the high-efficiency filter, resulting in a reduction in cleanliness. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present utility model provides a double-layer negative pressure liquid tank sealed laminar flow hood device, which overcomes the deficiencies of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above object, the present application adopts the following technical solution: A double-layer negative pressure liquid tank sealed laminar flow hood device includes a laminar flow hood box body. A lifting mechanism is provided at the top of the laminar flow hood box body. A fan static pressure box is slidably connected inside the laminar flow hood box body. A connection mechanism is provided between the fan static pressure box and the laminar flow hood box body. A fan is fixedly connected inside the fan static pressure box. Four support mechanisms are provided at the top of the fan. The four support mechanisms are symmetrically installed on the surface of the fan static pressure box. A filtering mechanism is provided between the four support mechanisms. A sealing mechanism is provided on the surface of the filtering mechanism. The sealing mechanism includes a mounting frame. The mounting frame is fixedly connected to the fan static pressure box. A spring is fixedly connected inside the mounting frame. One side of the spring is fixedly connected to a limit block. The limit block is slidably connected to the mounting frame. The side of the limit block away from the mounting frame is slidably connected to a sealing strip.

[0006] As a preferred embodiment, the lifting mechanism includes a lifting rod. The lifting rod is fixedly connected to the laminar flow hood box body. The outer part of the lifting rod is slidably connected to a fixed frame. A motor is fixedly connected inside the fixed frame. The output end of the motor is fixedly connected to a threaded rod. The threaded rod is threadedly connected to the lifting rod. Two first bolts are threadedly connected to the surface of the fixed frame. The two first bolts are symmetrically distributed on the surface of the fixed frame.

[0007] By adopting the above technical solution, the fixed frame is fixed by rotating the first bolt, then the motor is fixed by the fixed frame, then the output end of the motor rotates to drive the threaded rod to rotate, then the threaded rod rotates to drive the lifting rod to move inside the fixed frame, and then the lifting rod moves to drive the laminar flow hood box body to adjust the height, so that the height of the laminar flow hood box body can be better adjusted.

[0008] As a preferred embodiment, the connecting mechanism includes fixing blocks. There are four fixing blocks, and the four fixing blocks are symmetrically distributed on the surface of the fan static pressure box. A second bolt is threadedly connected inside the fixing block.

[0009] By adopting the above technical solution, the fan static pressure box and the laminar flow hood box body can be better connected by rotating the second bolt inside the fixing block.

[0010] As a preferred embodiment, the supporting mechanism includes a supporting rod. The supporting rod is fixedly connected to the fan static pressure box, and a supporting block is threadedly connected to the surface of the supporting rod.

[0011] By adopting the above technical solution, the supporting block can be limited by the supporting rod, and then the fixing frame can be better supported by the supporting block.

[0012] As a preferred embodiment, the filtering mechanism includes a fixing frame. The fixing frame is slidably connected to the fan static pressure box. A filter is slidably connected inside the fixing frame. A liquid tank sealing edge is fixedly connected to the surface of the filter. A liquid tank is fixedly connected inside the fixing frame. The liquid tank sealing edge is located inside the liquid tank, and a sealing glue is provided inside the liquid tank.

[0013] By adopting the above technical solution, the filter can be limited by the fixing frame. Then, the liquid tank sealing edge on the surface of the filter is inserted into the liquid tank on the surface of the fixing frame. Then, the liquid tank is filled with sealing glue to seal the connection between the fixing frame and the filter. Then, the air can be better filtered by the filter.

[0014] As a preferred embodiment, a plurality of through holes are formed on the surface of the laminar flow hood box body. The plurality of through holes are evenly distributed on the surface of the laminar flow hood box body, and a filter net is provided inside the through holes.

[0015] By adopting the above technical solution, a plurality of through holes are formed on the surface of the laminar flow hood box body. The plurality of through holes are evenly distributed on the surface of the laminar flow hood box body, and a filter net is provided inside the through holes. Then, the air entering the inside of the laminar flow hood box body can be preliminarily filtered by the filter net, so that the air can better enter the inside of the laminar flow hood box body and the air can be preliminarily filtered.

[0016] As a preferred embodiment, a controller is fixedly connected to the surface of the laminar flow hood box body. The controller is electrically connected to the motor and the fan.

[0017] By adopting the above technical solution, a controller is fixedly connected to the surface of the laminar flow hood box body, and the controller is electrically connected to the motor and the fan. Then, the controller controls the switches of the motor and the fan, which can better control the switches of the motor and the fan.

[0018] As a preferred embodiment, an air outlet is opened at the bottom of the laminar flow hood box body, and a flow equalizing film is fixedly connected inside the air outlet.

[0019] By adopting the above technical solution, an air outlet is opened at the bottom of the laminar flow hood box body, and a flow equalizing film is fixedly connected inside the air outlet, which can better discharge the air evenly.

[0020] Advantages of this application:

[0021] 1. For this double-layer negative pressure liquid tank sealed laminar flow hood device, by setting the sealing strip, limiting block, mounting frame and spring, the spring is supported by the mounting frame, then the limiting block is supported by the spring, and then the sealing strip is limited by the limiting block. Then, the sealing strip seals the connection between the fan static pressure box and the fixed frame, so that the air pressure between the laminar flow hood box body and the fan static pressure box is less than the air pressure inside the fan static pressure box to achieve the negative pressure sealing effect, avoiding the problem that when the existing laminar flow hood filters air through the filter, due to poor sealing, the indoor air entering the hood leaks to the air outlet side without passing through the high-efficiency filter, and improving the practicability.

[0022] 2. For this double-layer negative pressure liquid tank sealed laminar flow hood device, by setting the fixed frame, the first bolt, the motor, the threaded rod and the lifting rod, the fixed frame is fixed by rotating the first bolt, then the motor is fixed by the fixed frame, then the output end of the motor rotates to drive the threaded rod to rotate, and then the threaded rod rotates to drive the lifting rod to move inside the fixed frame, and then the lifting rod moves to drive the laminar flow hood box body to adjust the height, avoiding the problem that the existing laminar flow hood cannot adjust the height of the laminar flow hood box body, and improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front structural schematic diagram of this application;

[0024] Figure 2 It is the front structural sectional view of this application;

[0025] Figure 3 It is the structural schematic diagram of the filtering mechanism of this application;

[0026] Figure 4 For this application Figure 3 The enlarged schematic diagram of the structure at A.

[0027] Reference numerals in the figure: 1, laminar flow hood box body; 2, lifting mechanism; 21, fixing frame; 22, first bolt; 23, motor; 24, threaded rod; 25, lifting rod; 3, filtering mechanism; 31, filter; 32, fixing frame; 33, liquid tank sealing edge; 34, liquid tank; 4, supporting mechanism; 41, supporting rod; 42, supporting block; 5, connecting mechanism; 51, second bolt; 52, fixing block; 6, sealing mechanism; 61, sealing strip; 62, limiting block; 63, mounting frame; 64, spring; 7, fan static pressure box; 8, fan; 9, controller; 10, through hole; 11, air outlet; 12, flow equalizing film. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0029] Refer to Figures 1 - 2 , a double-layer negative pressure liquid tank sealed laminar flow hood device, including a laminar flow hood box body 1, a lifting mechanism 2 is provided at the top of the laminar flow hood box body 1. The lifting mechanism 2 includes a lifting rod 25. The lifting rod 25 is fixedly connected to the laminar flow hood box body 1. A fixing frame 21 is slidably connected to the outside of the lifting rod 25. A motor 23 is fixedly connected to the inside of the fixing frame 21. The output end of the motor 23 is fixedly connected to a threaded rod 24. The threaded rod 24 is threadedly connected to the lifting rod 25. Two first bolts 22 are threadedly connected to the surface of the fixing frame 21. The two first bolts 22 are symmetrically distributed on the surface of the fixing frame 21; by rotating the first bolt 22 to fix the fixing frame 21, and then fixing the motor 23 by the fixing frame 21, and then driving the threaded rod 24 to rotate by the rotation of the output end of the motor 23, and then driving the lifting rod 25 to move inside the fixing frame 21 by the rotation of the threaded rod 24, and then driving the laminar flow hood box body 1 to adjust the height by the movement of the lifting rod 25, the height of the laminar flow hood box body 1 can be better adjusted.

[0030] Refer to Figures 2 - 3 , a fan static pressure box 7 is slidably connected inside the laminar flow hood box body 1. A connecting mechanism 5 is provided between the fan static pressure box 7 and the laminar flow hood box body 1. The connecting mechanism 5 includes fixing blocks 52. There are four fixing blocks 52, and the four fixing blocks 52 are symmetrically distributed on the surface of the fan static pressure box 7. A second bolt 51 is threadedly connected to the inside of the fixing block 52; by rotating the second bolt 51 inside the fixing block 52 to connect the fan static pressure box 7 and the laminar flow hood box body 1, the connection between the fan static pressure box 7 and the laminar flow hood box body 1 can be better connected.

[0031] Refer to Figures 2 - 3, a fan 8 is fixedly connected inside the fan static pressure box 7. Four support mechanisms 4 are provided on the top of the fan 8. The four support mechanisms 4 are symmetrically installed on the surface of the fan static pressure box 7. A filtering mechanism 3 is provided between the four support mechanisms 4. The filtering mechanism 3 includes a fixed frame 32. The fixed frame 32 is slidably connected to the fan static pressure box 7. A filter 31 is slidably connected inside the fixed frame 32. A liquid groove sealing edge 33 is fixedly connected to the surface of the filter 31. A liquid groove 34 is fixedly connected inside the fixed frame 32. The liquid groove sealing edge 33 is located inside the liquid groove 34. A sealing glue is provided inside the liquid groove 34. The filter 31 is limited by the fixed frame 32. Then, the liquid groove sealing edge 33 on the surface of the filter 31 is inserted into the liquid groove 34 on the surface of the fixed frame 32. Then, the liquid groove 34 is filled with the sealing glue to seal the connection between the fixed frame 32 and the filter 31. Then, the filter 31 filters the air, and the air can be filtered better.

[0032] Refer to Figure 3 , the support mechanism 4 includes a support rod 41. The support rod 41 is fixedly connected to the fan static pressure box 7. A support block 42 is threadedly connected to the surface of the support rod 41. The support block 42 is limited by the support rod 41. Then, the support block 42 supports the fixed frame 32, and the fixed frame 32 can be supported better.

[0033] Refer to Figures 3 - 4 , a sealing mechanism 6 is provided on the surface of the filtering mechanism 3. The sealing mechanism 6 includes a mounting frame 63. The mounting frame 63 is fixedly connected to the fan static pressure box 7. A spring 64 is fixedly connected inside the mounting frame 63. A limiting block 62 is fixedly connected to one side of the spring 64. The limiting block 62 is slidably connected to the mounting frame 63. A sealing strip 61 is slidably connected to the side of the limiting block 62 away from the mounting frame 63.

[0034] Refer to Figures 1 - 2 , a plurality of through holes 10 are formed on the surface of the laminar flow hood box body 1. The plurality of through holes 10 are evenly distributed on the surface of the laminar flow hood box body 1. A filter net is provided inside the through holes 10. Through the plurality of through holes 10 formed on the surface of the laminar flow hood box body 1, the plurality of through holes 10 are evenly distributed on the surface of the laminar flow hood box body 1, and a filter net is provided inside the through holes 10. Then, the filter net preliminarily filters the air entering the inside of the laminar flow hood box body 1, and the air can enter the inside of the laminar flow hood box body 1 better, and the air is preliminarily filtered.

[0035] Refer to Figures 1 - 2 , a controller 9 is fixedly connected to the surface of the laminar flow hood box body 1. The controller 9 is electrically connected to the motor 23 and the fan 8. Through the controller 9 fixedly connected to the surface of the laminar flow hood box body 1, the controller 9 is electrically connected to the motor 23 and the fan 8. Then, the controller 9 controls the switches of the motor 23 and the fan 8, and the switches of the motor 23 and the fan 8 can be controlled better.

[0036] Reference Figures 1 - 2 Figures 1 - 2 At the bottom of the laminar flow hood housing 1, an air outlet 11 is provided, and a flow equalizing film 12 is fixedly connected inside the air outlet 11; by providing the air outlet 11 at the bottom of the laminar flow hood housing 1 and fixedly connecting the flow equalizing film 12 inside the air outlet 11, the air can be discharged more evenly.

[0037] Working principle: Fix the fixing frame 21 by rotating the first bolt 22, then fix the motor 23 by the fixing frame 21, then drive the threaded rod 24 to rotate by the rotation of the output end of the motor 23, then drive the lifting rod 25 to move inside the fixing frame 21 by the rotation of the threaded rod 24, then drive the laminar flow hood housing 1 to adjust the height by the movement of the lifting rod 25, then connect the fan static pressure box 7 and the laminar flow hood housing 1 by rotating the second bolt 51 inside the fixing block 52, then suck the outside air into the inside of the laminar flow hood housing 1 by the fan 8, then a filter screen is provided inside the through hole 10, and the filter screen preliminarily filters the air entering the inside of the laminar flow hood housing 1, then limit the support block 42 by the support rod 41, then support the fixing frame 32 by the support block 42, then limit the filter 31 by the fixing frame 32, then insert the liquid tank sealing edge 33 on the surface of the filter 31 into the liquid tank 34 on the surface of the fixing frame 32, then fill the liquid tank 34 with sealant to seal the connection between the fixing frame 32 and the filter 31, then filter the air by the filter 31, then support the spring 64 by the mounting frame 63, then support the limiting block 62 by the spring 64, then limit the sealing strip 61 by the limiting block 62, then seal the connection between the fan static pressure box 7 and the fixing frame 32 by the sealing strip 61, so that the air pressure between the laminar flow hood housing 1 and the fan static pressure box 7 is less than the air pressure inside the fan static pressure box 7 to achieve a negative pressure sealing effect, and the filtered air is discharged from the air outlet 11.

[0038] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and the inventive concept of the present application, makes equivalent substitutions or changes, and should be covered within the protection scope of the present application.

Claims

1. A double-layer negative pressure liquid tank sealed laminar flow hood device, comprising a laminar flow hood box (1), characterized in that: A lifting mechanism (2) is provided on the top of the laminar flow hood box (1); a fan static pressure box (7) is slidably connected to the inside of the laminar flow hood box (1); a connecting mechanism (5) is provided between the fan static pressure box (7) and the laminar flow hood box (1); a fan (8) is fixedly connected to the inside of the fan static pressure box (7); four supporting mechanisms (4) are provided on the top of the fan (8); the four supporting mechanisms (4) are symmetrically mounted on the surface of the fan static pressure box (7); and a filtering mechanism is provided between the four supporting mechanisms (4). (3), a sealing mechanism (6) is provided on the surface of the filtering mechanism (3), the sealing mechanism (6) comprising a mounting frame (63), the mounting frame (63) being fixedly connected to the static pressure box (7) of the fan, a spring (64) being fixedly connected inside the mounting frame (63), a limit block (62) being fixedly connected to one side of the spring (64), the limit block (62) being slidably connected to the mounting frame (63), and a sealing strip (61) being slidably connected to the side of the limit block (62) away from the mounting frame (63).

2. A double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 1, characterized in that: The lifting mechanism (2) comprises a lifting rod (25), the lifting rod (25) being fixedly connected to the laminar flow hood box (1), the outside of the lifting rod (25) being slidably connected to a fixing frame (21), the inside of the fixing frame (21) being fixedly connected to a motor (23), the output end of the motor (23) being fixedly connected to a threaded rod (24), the threaded rod (24) being threadedly connected to the lifting rod (25), the surface of the fixing frame (21) being threadedly connected to two first bolts (22), the two first bolts (22) being symmetrically distributed on the surface of the fixing frame (21).

3. A double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 1, characterized in that: The connection mechanism (5) comprises a fixing block (52), four fixing blocks (52) are provided, and the four fixing blocks (52) are symmetrically distributed on the surface of the fan static pressure box (7), and the internal threads of the fixing blocks (52) are connected to the second bolts (51).

4. A double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 1, characterized in that: The support mechanism (4) comprises a support rod (41), the support rod (41) is fixedly connected to the fan static pressure box (7), and a support block (42) is threadedly connected to the surface of the support rod (41).

5. A double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 1, characterized in that: The filtering mechanism (3) comprises a fixed frame (32), the fixed frame (32) being slidably connected to the fan static pressure box (7), the interior of the fixed frame (32) being slidably connected to a filter (31), the surface of the filter (31) being fixedly connected to a liquid tank sealing edge (33), the interior of the fixed frame (32) being fixedly connected to a liquid tank (34), the liquid tank sealing edge (33) being located inside the liquid tank (34), and the interior of the liquid tank (34) being provided with a sealant.

6. A double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 1, characterized in that: A plurality of through holes (10) are provided on the surface of the laminar flow hood box (1), the plurality of through holes (10) are evenly distributed on the surface of the laminar flow hood box (1), and a filter net is provided inside the through holes (10).

7. A double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 2, characterized in that: A controller (9) is fixedly connected to the surface of the laminar flow hood box (1), and the controller (9) is electrically connected to the motor (23) and the fan (8).

8. The double-layer negative pressure liquid tank sealed laminar flow hood device according to claim 1, characterized in that: An air outlet (11) is provided at the bottom of the laminar flow hood box (1), and a flow equalizing membrane (12) is fixedly connected to the interior of the air outlet (11).

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