Ventilation cabinet for laboratory

Abstract

The utility model relates to the field of fume cupboards, in particular to a fume cupboard for a laboratory, which comprises a fume cupboard for the laboratory, a ventilation assembly, a dust cleaning structure for cleaning dust on the ventilation assembly, a ventilation opening and a cleaning structure for cleaning the ventilation opening, the servo motor drives the screw rod to rotate, the screw rod is in threaded connection with a main ventilation plate, and the side ventilation plates are fixed to the two sides of the main ventilation plate. According to the ventilation device, the purpose of all-directional ventilation is achieved by starting the servo motor, rotating the screw rod and moving the main ventilation plate and the side ventilation plate back and forth, the ventilation efficiency is improved, when the main ventilation plate and the side ventilation plate move to the water tank, the rack drives the first gear to rotate, the main rolling brush and the side rolling brush to rotate, and water adhered to the water tank becomes wet; and dust on the dustproof plates at the air inlet ends of the main ventilation plate and the side ventilation plates is wiped down, so that the dust removal purpose is achieved, and the dust is prevented from blocking the dustproof plates.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, and particularly relates to a fume hood for laboratories. Background Art

[0002] In laboratories, there are many fume hoods. The main function of a fume hood is to isolate harmful gases, dust, and microorganisms, protect the safety and health of experimental personnel, and discharge harmful gases and dust in the laboratory through a forced exhaust system. At the same time, it can also provide a space for experimental operations to ensure the accuracy and reliability of experiments.

[0003] The utility model with the publication number CN219944046U provides a fume hood for laboratories, which relates to the technical field of fume hoods and includes a cabinet body and an exhaust fan arranged on the cabinet body. A cleaning mechanism for removing toxic and harmful gases entering the exhaust fan is arranged on the cabinet body. The fume hood for laboratories involved in this application sucks air outwards by starting the exhaust fan arranged on the cabinet body. When the toxic and harmful gases pass through the activated carbon plate on the cleaning mechanism, they are adsorbed and filtered, and the clean gas transformed after adsorption and filtration of the toxic and harmful gases is discharged outwards, reducing the pollution to the environment.

[0004] During use, dust is prone to accumulate on the filter screen, blocking the filter screen and resulting in an unsatisfactory air intake effect. It is necessary to disassemble it for cleaning, which is time-consuming and laborious.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a fume hood for laboratories that can effectively solve the above technical problems.

[0007] To achieve the purpose of the utility model, the following technical solution is adopted: A fume hood for laboratories includes: a laboratory fume hood, a ventilation component, a dust cleaning structure for cleaning the dust on the ventilation component, a ventilation opening, and a cleaning structure for cleaning the ventilation opening. The ventilation component includes: a screw rod that can rotate at the top end inside the laboratory fume hood, a servo motor for driving the rotation of the screw rod, a main ventilation plate threadedly connected to the screw rod, side ventilation plates fixed on both sides of the main ventilation plate, detachable dust-proof plates installed at the air intake ends of the main ventilation plate and the side ventilation plates, a fan located inside the ventilation opening, and a fixed motor for driving the rotation of the fan. The dust cleaning structure includes: a water tank fixedly installed at one end inside the laboratory fume hood, a main rotating brush and side rotating brushes rotatably installed at the top end and both sides of the water tank, first gears fixedly installed at both ends of the main rotating brush and the top ends of the side rotating brushes, and racks meshing with the first gears fixedly installed on both sides of the bottom end of the main ventilation plate and the top end of one side of the side ventilation plate.

[0008] Further, a water inlet is installed at the top of one end of the water tank. The water inlet is communicated with a water supply pipe, and a sewage outlet is installed at the bottom of the water tank.

[0009] Further, the main rolling brush and the side rolling brush respectively abut against the water outlet at the top end and the side of the water tank.

[0010] Further, the cleaning structure includes: a main gear fixedly installed on the output shaft of a fixed motor, a driven gear meshed on one side of the main gear, a rotating shaft fixedly installed on the driven gear, and a brush fixedly installed on the rotating shaft.

[0011] Compared with the prior art, the utility model has the following beneficial effects: By starting the servo motor in the ventilation cabinet for laboratory use of the utility model, the screw rotates, and the main ventilation plate and the side ventilation plate move back and forth, achieving the purpose of all-round ventilation, improving the ventilation efficiency. When the main ventilation plate and the side ventilation plate move to the position of the water tank, the rack drives the first gear to rotate, and the main rolling brush and the side rolling brush rotate and get wet with the water in the water tank, wiping off the dust on the dust-proof plates at the air inlet ends of the main ventilation plate and the side ventilation plate, achieving the purpose of dust cleaning and avoiding dust blocking the dust-proof plates;

[0012] By starting the fixed motor, the main gear drives the driven gear to rotate, and the rotating shaft drives the brush to rotate, which can sweep off the dust on the dust-proof net, achieving the purpose of cleaning it and avoiding the influence on the ventilation effect due to dust blocking the dust-proof net. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide further understanding of the utility model and constitute a part of the specification. They are used together with the embodiments of the utility model to explain the utility model, but do not constitute a limitation to the utility model.

[0014] Figure 1 It is a front view structural schematic diagram of the utility model;

[0015] Figure 2 It is a front view structural schematic diagram of the ventilation component of the utility model;

[0016] Figure 3 It is a rear view sectional structural schematic diagram of the ventilation component of the utility model;

[0017] Figure 4 It is a front view structural schematic diagram of the dust cleaning structure of the utility model;

[0018] Figure 5 It is a front view sectional structural schematic diagram of the ventilation opening of the utility model.

[0019] In the figure: 1. Laboratory fume hood; 2. Ventilation component; 201. Side ventilation plate; 202. Screw; 203. Servo motor; 204. Rack; 205. Main ventilation plate; 206. Ventilation pipe; 207. Activated carbon plate; 208. Fan; 209. Fixed motor; 210. Dust-proof net; 3. Ash cleaning structure; 301. First gear; 302. Drain port; 303. Water tank; 304. Side roller brush; 305. Water inlet; 306. Main roller brush; 4. Ventilation opening; 5. Cleaning structure; 501. Main gear; 502. Driven gear; 503. Rotating shaft; 504. Brush. Specific implementation mode

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "transverse", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protection scope of the present utility model. When a mechanism is referred to as "fixed to" another mechanism, it can be directly on the other mechanism or there may also be an intermediate mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intermediate mechanism at the same time. When a mechanism is considered to be "disposed on" another mechanism, it can be directly disposed on the other mechanism or there may be an intermediate mechanism at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] As Figures 1 to 5 shown, a laboratory fume hood of the present utility model includes: a laboratory fume hood 1, a ventilation component 2, an ash cleaning structure 3 for cleaning the dust on the ventilation component 2, a ventilation opening 4, and a cleaning structure 5 for cleaning the ventilation opening 4.

[0023] The ventilation component 2 includes: a rotatable screw rod 202 located at the inner top of the laboratory fume hood 1, a servo motor 203 for driving the rotation of the screw rod 202, a main ventilation plate 205 threadedly connected to the screw rod 202, side ventilation plates 201 fixed on both sides of the main ventilation plate 205. The main ventilation plate 205 and the side ventilation plates 201 are evenly provided with air inlet holes. Removable dust-proof plates are installed on the main ventilation plate 205 and the side ventilation plates 201 at one end of the air inlet holes. The dust-proof plates are fixed by bolts. A fan 208 is located inside the ventilation opening 4. A slidable activated carbon plate 207 is installed below the fan 208 for easy replacement. And a fixed motor 209 for driving the rotation of the fan 208. A removable dust-proof net 210 is installed above the fixed motor 209. The dust-proof net 210 is fixed on the ventilation opening 4 by bolts. The ventilation opening 4 and the main ventilation plate 205 are connected through a ventilation pipe 206. Through the setting of the ventilation component 2, the dust and harmful gases in the laboratory fume hood 1 can be discharged outside the laboratory.

[0024] The dust cleaning structure 3 includes: a water tank 303 fixedly installed at one end inside the laboratory fume hood 1. The water tank 303 is made of a transparent material for easy viewing of the water level inside. An inlet 305 is installed at the top of one end of the water tank 303. The inlet 305 is connected to a water supply pipe. A sewage outlet 302 is installed at the bottom of the water tank 303. The top and the side of the water tank 303 are both provided with water outlets for easy water discharge.

[0025] Rotatable main rolling brushes 306 and side rolling brushes 304 are installed at the top and on both sides of the water tank 303. The main rolling brushes 306 and the side rolling brushes 304 are respectively in contact with the water outlets at the top and on the side of the water tank 303. First gears 301 are fixedly installed at both ends of the main rolling brushes 306 and at the top of the side rolling brushes 304. A rack 204 meshing with the first gears 301 is fixedly installed on both sides of the bottom end of the main ventilation plate 205 and at the top of one side of the side ventilation plate 201. Through the setting of the dust cleaning structure 3, the dust accumulated on the dust-proof plates at the air inlet ends of the main ventilation plate 205 and the side ventilation plates 201 can be cleaned off.

[0026] In the present utility model, when the servo motor 203 is started, the screw rod 202 rotates, and the main ventilation plate 205 and the side ventilation plates 201 move back and forth for all-round ventilation, improving the ventilation efficiency. When the main ventilation plate 205 and the side ventilation plates 201 move to the position of the water tank 303, the rack 204 drives the first gears 301 to rotate, and the main rolling brushes 306 and the side rolling brushes 304 rotate and get wet by the water in the water tank 303, wiping off the dust on the dust-proof plates at the air inlet ends of the main ventilation plate 205 and the side ventilation plates 201 to prevent the dust from blocking the dust-proof plates.

[0027] The cleaning structure 5 includes: a main gear 501 fixedly mounted on the output shaft of the fixed motor 209, a driven gear 502 meshed with one side of the main gear 501, a rotating shaft 503 fixedly mounted on the driven gear 502, and a brush 504 fixedly mounted on the rotating shaft 503. The brush 504 is located on the dust-proof net 210. Through the setting of the cleaning structure 5, the dust on the dust-proof net 210 can be cleaned off.

[0028] Working principle: Start the servo motor 203, the screw 202 rotates, the main ventilation plate 205 and the side ventilation plate 201 move back and forth. While moving, start the fixed motor 209, the fan 208 rotates, the dust and harmful gases in the laboratory fume hood 1 enter through the air inlet holes on the main ventilation plate 205 and the side ventilation plate 201, and are filtered by the dust-proof plate, then enter the ventilation port 4 through the ventilation pipe 206, and are discharged after being adsorbed and filtered by the activated carbon plate 207 and the dust-proof net 210. Add sufficient water to the water tank 303 through the water inlet 305. When the main ventilation plate 205 and the side ventilation plate 201 move to the position of the water tank 303, the rack 204 drives the first gear 301 to rotate, the main rotary brush 306 and the side rotary brush 304 rotate, get wet by the water in the water tank 303, and wipe off the dust on the dust-proof plates at the air inlet ends of the main ventilation plate 205 and the side ventilation plate 201, achieving the purpose of dust cleaning and avoiding dust clogging the dust-proof plates. At the same time, the output shaft of the fixed motor 209 drives the main gear 501 to rotate, the main gear 501 drives the driven gear 502 to rotate, and the rotating shaft 503 drives the brush 504 to rotate, which can sweep off the dust on the dust-proof net 210, achieving the purpose of cleaning it and avoiding the dust clogging the dust-proof net 210 and affecting the ventilation effect.

[0029] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0030] It should be understood that for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A fume hood for laboratory use, characterized in that, Including: A laboratory fume hood (1), a ventilation component (2), a dust cleaning structure (3) for cleaning the dust on the ventilation component (2), a ventilation opening (4), and a cleaning structure (5) for cleaning the ventilation opening (4); The ventilation component (2) includes: a rotatable screw rod (202) located at the inner top of the laboratory fume hood (1), a servo motor (203) for driving the rotation of the screw rod (202), a main ventilation plate (205) threadedly connected to the screw rod (202), side ventilation plates (201) fixed on both sides of the main ventilation plate (205), detachable dust-proof plates installed at the air inlet ends of the main ventilation plate (205) and the side ventilation plates (201), a fan (208) located inside the ventilation opening (4), and a fixed motor (209) for driving the rotation of the fan (208); The dust cleaning structure (3) includes: a water tank (303) fixedly installed at one end inside the laboratory fume hood (1), a main rotary brush (306) and side rotary brushes (304) rotatably installed at the top and both sides of the water tank (303), first gears (301) fixedly installed at both ends of the main rotary brush (306) and the top of the side rotary brushes (304), and racks (204) engaged with the first gears (301) fixedly installed on both sides of the bottom end of the main ventilation plate (205) and the top of one side of the side ventilation plate (201).

2. The fume hood for laboratory use according to claim 1, characterized in that, A water inlet (305) is installed at the top of one end of the water tank (303), the water inlet (305) is communicated with a water supply pipe, and a sewage outlet (302) is installed at the bottom of the water tank (303).

3. A fume hood for laboratory use according to claim 1, characterized in that, The main rotary brush (306) and the side rotary brushes (304) are respectively abutted against the water outlet at the top and the side of the water tank (303).

4. A fume hood for laboratory use according to claim 1, characterized in that, The cleaning structure (5) includes: a main gear (501) fixedly installed on the output shaft of the fixed motor (209), a driven gear (502) engaged with one side of the main gear (501), a rotating shaft (503) fixedly installed on the driven gear (502), and a brush (504) fixedly installed on the rotating shaft (503).

Images