Dustproof safe ventilation cabinet with adjustable air volume

Abstract

The utility model relates to the technical field of ventilation cabinets, and discloses an air volume adjustable dustproof safety ventilation cabinet, which comprises a device main body, a first fan body and a filtering mechanism, the bottom of the device main body is fixedly connected with universal wheels, the filtering mechanism is arranged in the device main body, the first fan body is arranged in the device main body, and the first fan body is arranged in the device main body. A first rotating rod is rotationally connected into the device body, grating blades are fixedly connected to the outer portion of the first rotating rod, and the first rotating rod drives the grating blades to be opened or closed so that the air outlet amount can be adjusted. A sliding groove is formed in the position, opposite to the first fixing rod, of the reciprocating plate, the first fixing rod is slidably connected to the interior of the sliding groove and rotates relative to the gear disc to adjust the air output, the first fan body, the first rotating rod and the grating blades are additionally arranged, and the first rotating rod rotates to drive the grating blades to be closed and opened to control the air output; and the gas output is stably controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fume hood, especially adjustable dustproof safety fume hood of air volume. BACKGROUND

[0002] Fume hood, also known as fume hood, is a key safety equipment in laboratory. It works on the basis of aerodynamics and fluid mechanics, and realizes the discharge of pollutants and the renewal of indoor air through the exhaust system, effectively preventing the harmful substances such as chemicals and gases in the laboratory from causing harm to the operators and the environment.

[0003] According to the automatic adjustment of the air volume of the fume hood (authorization announcement number: CN 213393630U) disclosed by the patent network, the utility model discloses a kind of automatic adjustment of the air volume of the fume hood, it is related to fume hood technical field, to solve the problem that under the action of exhaust fan, gas in the inside is discharged from air outlet, the air volume of air outlet is constant, when some concentration needs are more precise experimental operation, air volume is too large, the gas used for experiment is discharged at the same time, affect experimental operation data.The upper portion of the cabinet body is provided with cabinet frame, the inside of the cabinet frame is provided with exhaust fan, the upper portion of the exhaust fan is provided with exhaust hole, the inside of the cabinet frame is provided with rotating cavity, the inside of the rotating cavity is provided with gear disc, the middle position of the gear disc is provided with shaft pin, the both ends of the shaft pin extend to the inside of cabinet frame, one side of the exhaust fan is provided with step motor, the upper portion of the output end of the step motor is provided with rotating shaft, one side of the gear disc is provided with gear, and the gear is engaged with the gear disc.

[0004] For the above description, the applicant believes that there are the following problems:

[0005] The utility model in the use process, through the hole on gear disc and exhaust hole corresponding, the discharge of air volume is controlled by gear disc rotation, but the position of such adjustment mode hole is relatively fixed, when discharging, gear disc rotates, when part of the hole rotates to the relative position of exhaust hole, it will cause the gas to escape to increase the discharge amount of gas, when carrying out some experiments sensitive to gas concentration, it will affect the final experimental data, so it is necessary to improve the adjustable dustproof safety fume hood of air volume to solve the above problems. Utility model content

[0006] In order to overcome the problem that the hole corresponding control mode and the gear disc rotation will cause part of the gas to escape and affect the final experimental data.

[0007] The utility model discloses a technical scheme for the dustproof safety ventilation cabinet with adjustable air volume, which comprises a device main body, a first fan body and a filtering mechanism.

[0008] Preferably, the device main body is internally provided with a through groove, and the first fan body is arranged inside the through groove.

[0009] Preferably, the front surface of the device main body is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a rotating disc, the inside of the rotating disc is fixedly connected with a first fixed rod, the inside of the device main body is slidably connected with a first sliding plate, the left side of the first sliding plate is fixedly connected with a reciprocating plate, the first fixed rod is slidably connected inside the reciprocating plate, the front surface of the first sliding plate is fixedly connected with a first limiting block, the outside of the first rotating rod is fixedly connected with a connecting block, the inside of the connecting block is fixedly connected with a sliding rod, and the inside of the first limiting block is slidably connected with the sliding rod.

[0010] Preferably, the device main body is provided with a sliding groove at the opposite position of the first sliding plate, and the first sliding plate is slidably connected inside the sliding groove.

[0011] Preferably, the reciprocating plate is provided with a sliding groove at the opposite position of the first fixed rod, and the first fixed rod is slidably connected inside the sliding groove.

[0012] Preferably, the filtering mechanism comprises an air inlet grille, the air inlet grille is fixedly connected inside the device main body, the inside of the device main body is slidably connected with a filter plate, a spring is fixedly connected between the filter plate and the device main body, the inside of the filter plate is fixedly connected with a second sliding plate, the inside of the device main body is slidably connected with an ash collecting box, the inside of the device main body is rotatably connected with a second rotating rod, the outside of the second rotating rod is fixedly connected with a first bevel gear, the inside of the device main body is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second bevel gear, the second bevel gear is engaged outside the first bevel gear, the outside of the second rotating rod is fixedly connected with a first gear, the outside of the second rotating rod is fixedly connected with a cam, and the inner side of the second sliding plate is fixedly connected with a second fixed rod.

[0013] Preferably, the device main body is provided with a sliding groove at the opposite position of the filter plate, and the filter plate is slidably connected inside the sliding groove.

[0014] The utility model discloses a beneficial effect: relative to the gear plate rotation to adjust the air output mode, by first fan body, first rotation rod and grille leaf are added, and the closing and opening control air output of grille leaf are driven by first rotation rod rotation, stably control air output is big, thereby avoiding the through -hole and the exhaust hole corresponding control mode, gear plate rotation can lead to part gas escape, influence final experimental data's problem. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the device main body sectional structure schematic diagram of the utility model;

[0017] Figure 3 It is the first motor and the connected component structure schematic diagram of the utility model;

[0018] Figure 4 It is the first motor and the connected component exploded structure schematic diagram of the utility model;

[0019] Figure 5 It is the first sliding plate and the connected component structure schematic diagram of the utility model;

[0020] Figure 6 It is the filter mechanism structure schematic diagram of the utility model;

[0021] Figure 7 It is the filter mechanism local structure schematic diagram of the utility model.

[0022] Mark explanation: 1, device main body;4, universal wheel;21, first fan body;22, first rotation rod;23, grille leaf;24, first motor;25, rotation disc;26, first fixed link;27, first sliding plate;28, reciprocating plate;29, first limit block;210, connecting block;211, sliding rod;31, air inlet grille;32, filter plate;33, spring;34, second sliding plate;35, dust collecting box;36, second rotation rod;37, first bevel gear;38, second motor;39, second bevel gear;310, first gear;311, cam;312, second fixed link. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the drawings and examples.

[0024] Please refer to Figure 1 - Figure 7The utility model provides a kind of embodiment: dustproof safety ventilation cabinet of air volume adjustable, including device main body 1, still including first fan body 21 with filter mechanism, the bottom of device main body 1 is fixedly connected with universal wheel 4, filter mechanism is provided in the inside of device main body 1, first fan body 21 is provided in the inside of device main body 1, first rotating rod 22 is rotatably connected in the inside of device main body 1, grille leaf 23 is fixedly connected outside first rotating rod 22, the size of air volume is adjusted by first rotating rod 22 drive grille leaf 23 open or close, when using, by the working of first fan body 21, external air is inhaled, air is filtered fully after passing through filter mechanism, exhaust by first fan body 21 and grille leaf 23, by first rotating rod 22 rotation adjustment grille leaf 23 opening and closing when discharging, to control air volume, through groove is provided in the inside of device main body 1, first fan body 21 is arranged in the inside of through groove, the position of first fan body 21 is limited by through groove, by the working of first fan body 21, external air is inhaled in the inside of device main body 1.

[0025] Please refer to Figure 1 - Figure 5 In the embodiment, the front of device main body 1 is fixedly connected with first motor 24, the output end of first motor 24 is fixedly connected with rotating disc 25, rotating disc 25 is fixedly connected with first fixed rod 26 in the inside, first sliding plate 27 is slidably connected in the inside of device main body 1, reciprocating plate 28 is fixedly connected to the left side of first sliding plate 27, first fixed rod 26 is slidably connected in the inside of reciprocating plate 28, first limit block 29 is fixedly connected to the front of first sliding plate 27, connecting block 210 is fixedly connected in the inside of first sliding plate 27, sliding rod 211 is slidably connected in the inside of first limit block 29, when first sliding plate 27 slides, first rotating rod 22 is rotated by the cooperation between first limit block 29, sliding rod 211 and connecting block 210, so that grille leaf 23 is opened, to adjust the size of air output, relative to the mode of gear disc rotation, avoid the problem that air escapes when adjusting causes unstable air output, the relative position of device main body 1 is provided with sliding groove, first sliding plate 27 is slidably connected in the inside of sliding groove, the position of first sliding plate 27 is limited by sliding groove, so that first sliding plate 27 linearly slides in the inside of device main body 1, to prevent it from separating from device main body 1, reciprocating plate 28 is provided with sliding groove in the relative position of first fixed rod 26, first fixed rod 26 is slidably connected in the inside of sliding groove, the position of first fixed rod 26 is limited by sliding groove, to prevent first fixed rod 26 from separating from reciprocating plate 28, at the same time, reciprocating plate 28 and first sliding plate 27 are driven reciprocating motion by the cooperation between first fixed rod 26 and sliding groove.

[0026] Please refer to Figure 2 、 Figure 6 - Figure 7In the embodiment, the filtering mechanism includes an air inlet grille 31 fixedly connected to the inside of the device main body 1, a filter plate 32 slidingly connected to the inside of the device main body 1, a spring 33 fixedly connected between the filter plate 32 and the device main body 1, a second sliding plate 34 fixedly connected to the inside of the filter plate 32, a dust collecting box 35 slidingly connected to the inside of the device main body 1, a second rotating rod 36 rotatably connected to the inside of the device main body 1, a first bevel gear 37 fixedly connected to the outside of the second rotating rod 36, a second motor 38 fixedly connected to the inside of the device main body 1, a second bevel gear 39 fixedly connected to the output end of the second motor 38, the second bevel gear 39 engaged with the outside of the first bevel gear 37, a first gear 310 fixedly connected to the outside of the second rotating rod 36, a cam 311 fixedly connected to the outside of the second rotating rod 36, a second fixed rod 312 fixedly connected to the inner side of the second sliding plate 34. The air sucked into the inside of the device main body 1 is sufficiently filtered by the filter plate 32. When the device is not in use, the dust on the filter plate 32 is shaken off and collected in the inside of the dust collecting box 35 by sliding the filter plate 32. The device main body 1 is provided with a sliding groove at the relative position of the filter plate 32, the filter plate 32 is slidingly connected to the inside of the sliding groove, and the sliding of the filter plate 32 is limited by the sliding groove to prevent the filter plate 32 from deviating and affecting the overall filtering efficiency.

[0027] In use, the air is sucked into the inside of the device main body 1 by the operation of the first fan body 21, passes through the air inlet grille 31 and the filter plate 32, and is filtered by the filter plate 32. After the dust is blocked, the air passes through the grille leaf 23 and is discharged. When discharging, the rotating disc 25 is driven to rotate by the operation of the first motor 24, the first sliding plate 27 is driven to reciprocate by the cooperation of the first fixed rod 26 and the reciprocating plate 28, the first sliding plate 27 is driven to rotate by the cooperation of the first limiting block 29, the sliding rod 211 and the connecting block 210, and the first rotating rod 22 is driven to rotate, so as to control the opening and closing of the grille leaf 23 and the air volume. When the device is not in use, the second motor 38 is operated to drive one side of the second rotating rod 36 to rotate by the cooperation of the second bevel gear 39 and the first bevel gear 37, and the other side of the second rotating rod 36 is driven to rotate by the first gear 310. When the second rotating rod 36 rotates, the second sliding plate 34 is pushed to slide by the cooperation of the cam 311 and the second fixed rod 312, and the filter plate 32 is provided with a pushing force by the spring 33, so as to make the filter plate 32 reciprocate in the inside of the device main body 1 and shake off the dust attached to the surface of the filter plate 32. The shaken-off dust falls into the inside of the dust collecting box 35, and the staff member draws out the dust collecting box 35 to treat the dust.

[0028] Through the above steps, the first fan body 21, the first rotating rod 22 and the grille leaf 23 are added to solve the problem that the gear disc rotation causes part of the gas to escape and affects the final experimental data.

Claims

1. A dustproof safety fume hood with adjustable air volume, comprising a device main body (1), characterized in that: Also include the first fan body (21) and filter mechanism, the bottom of the device body (1) is fixedly connected with universal wheel (4), the inside of device body (1) is provided with filter mechanism, the inside of device body (1) is provided with first fan body (21), the inside of device body (1) is rotatably connected with first rotating rod (22), the outside of first rotating rod (22) is fixedly connected with grille leaf (23), open or close by first rotating rod (22) drive grille leaf (23) to adjust the size of air volume.

2. The variable air volume dust-safe fume hood according to claim 1, wherein: The inside of device body (1) is provided with a through slot, and the first fan body (21) is arranged in the through slot.

3. The variable air volume dust-safe fume hood of claim 1, wherein: The front of device body (1) is fixedly connected with first motor (24), the output end of first motor (24) is fixedly connected with rotating disc (25), the inside of rotating disc (25) is fixedly connected with first fixed rod (26), the inside of device body (1) is slidably connected with first sliding plate (27), the left side of first sliding plate (27) is fixedly connected with reciprocating plate (28), first fixed rod (26) is slidably connected in the inside of reciprocating plate (28), the front of first sliding plate (27) is fixedly connected with first limiting block (29), the outside of first rotating rod (22) is fixedly connected with connecting block (210), the inside of connecting block (210) is fixedly connected with sliding rod (211), and sliding rod (211) is slidably connected in the inside of first limiting block (29).

4. The variable air volume dust-safe fume hood according to claim 3, wherein: The device body (1) is provided with a sliding groove at the opposite position of the first sliding plate (27), and the first sliding plate (27) is slidably connected in the sliding groove.

5. The variable air volume dust-safe fume hood according to claim 3, wherein: The reciprocating plate (28) is provided with a sliding groove at the opposite position of the first fixed rod (26), and the first fixed rod (26) is slidably connected in the sliding groove.

6. The variable air volume dust-safe fume hood of claim 1, wherein: The filter mechanism includes an air inlet grille (31), the air inlet grille (31) is fixedly connected in the inside of device body (1), the inside of device body (1) is slidably connected with filter plate (32), the filter plate (32) and device body (1) are fixedly connected with spring (33), the inside of filter plate (32) is fixedly connected with second sliding plate (34), the inside of device body (1) is slidably connected with dust collecting box (35), the inside of device body (1) is rotatably connected with second rotating rod (36), the outside of second rotating rod (36) is fixedly connected with first bevel gear (37), the inside of device body (1) is fixedly connected with second motor (38), the output end of second motor (38) is fixedly connected with second bevel gear (39), second bevel gear (39) is engaged in the outside of first bevel gear (37), the outside of second rotating rod (36) is fixedly connected with first gear (310), the outside of second rotating rod (36) is fixedly connected with cam (311), the inner side of second sliding plate (34) is fixedly connected with second fixed rod (312).

7. The variable air volume dust-safe fume hood of claim 6, wherein: The device body (1) is provided with a sliding groove at the opposite position of the filter plate (32), and the filter plate (32) is slidably connected in the sliding groove.

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