Laboratory fume hood with air supplement structure

Abstract

The utility model discloses a laboratory fume cupboard with an air supplement structure, which comprises supporting legs, a main body mechanism fixedly arranged on the top surfaces of the supporting legs, a cupboard door movably connected in the bottom end of the side surface of the main body mechanism, an operation table fixedly connected in the main body mechanism, and a waste liquid box movably connected on the bottom surface in the main body mechanism, according to the air supply device, the first motor drives the air supply fan to rotate to generate suction force, and at the moment, air is filtered by the filter screen and enters the fixed shell; the air flow is guided by the air guide block to be output to the left end and the right end of the fixed shell to the interior of the exhaust device, whether the heating pipe is opened or not can be selected, the heating pipe can heat the air, the air output by the air compensation fan has a certain temperature, and a certain comfort degree can be brought to a user under the condition that the weather is cold and the normal experiment process is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation cabinet technical field, concretely relates to a laboratory ventilation cabinet with air supplementing structure. BACKGROUND

[0002] The laboratory ventilation cabinet is a kind of local exhaust equipment for laboratory, mainly used to discharge harmful gas, smoke, dust and other pollutants generated in experimental process, to protect the health and safety of experimental personnel, and prevent the diffusion of pollutants into laboratory environment.

[0003] Through the search, the patent number CN212733501U discloses a laboratory ventilation cabinet, which is installed by installing an exhaust fan in the inner cavity of the air suction cover, and the exhaust fan is supported by cooperating with the telescopic rod, so that the height of the exhaust fan can be adjusted by the telescopic rod, and the function of adjusting the suction force in the cabinet body is realized.

[0004] That is, the above-mentioned patent content is to adjust the suction force in the cabinet body by controlling the height of the exhaust fan through the telescopic rod, however, in the process of operation, a gap sufficient for operation is left for the user, and harmful gas generated in the experiment may flow out of the gap, therefore, we provide a laboratory ventilation cabinet with air supplementing structure to solve the above-mentioned problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a laboratory ventilation cabinet with air supplementing structure to solve the problems raised in the above-mentioned background technology.

[0006] To solve the above-mentioned technical problems, the utility model adopts the technical scheme of a laboratory ventilation cabinet with air supplementing structure, which comprises a supporting foot, a main body mechanism is fixedly arranged on the top surface of the supporting foot, a cabinet door is movably connected to the inner bottom end of the side surface of the main body mechanism, an operation table is fixedly connected to the inner part of the main body mechanism, a waste liquid box is movably connected to the inner bottom surface of the main body mechanism, a lifting door is movably connected to the inner part of the main body mechanism, and an air supplementing mechanism is arranged on the top surface of the main body mechanism.

[0007] The air supplementing mechanism comprises a fixed shell, the fixed shell is fixedly connected to the top surface of the main body mechanism, a fixed plate is fixedly connected to the inner part of the fixed shell, a motor one is fixedly connected to the inner part of the fixed plate, an air supplementing fan is fixedly connected to the output end of the motor one, and an exhaust device is fixedly connected to the output end of the fixed shell.

[0008] A heating pipe is fixedly connected to the inner middle part of the fixed shell, a wind guide block is fixedly connected to the other end of the inner part of the fixed shell, a filter screen is movably connected to the input end of the fixed shell, and a fixed frame is movably connected to the inner bottom surface of the filter screen.

[0009] The further improvement in the utility model technical scheme lies in that: the air exhaust device comprises a gas conveying pipe, the gas conveying pipe is fixedly connected to the output end of the fixed shell, the bottom surface of the gas conveying pipe is fixedly connected with a wind guide shell, the wind guide shell is fixedly connected to the inside of the side surface of the main body mechanism, and the inside of the wind guide shell is fixedly connected with a wind guide plate.

[0010] The further improvement in the utility model technical scheme lies in that: the output end of the wind guide shell is fixedly connected with an air outlet, the inside of the air outlet is fixedly connected with an air outlet filter screen, and the side surface of the air outlet is movably connected with a movable wind guide plate.

[0011] The further improvement in the utility model technical scheme lies in that: the main body mechanism comprises a cabinet body, the cabinet body is fixedly connected to the top surface of the supporting leg, the fixed shell is fixedly connected to the top surface of the cabinet body, the inside of the bottom end of the side surface of the cabinet body is provided with a storage bin, the wind guide shell is fixedly connected to the inside side surface of the cabinet body, the inside side surface of the cabinet body is fixedly connected with an air inlet, and the output end of the air inlet is fixedly connected with an air suction device.

[0012] The further improvement in the utility model technical scheme lies in that: one end of the inside of the cabinet body is fixedly connected with a sliding rail, the bottom surface of the inside of the cabinet body is fixedly connected with a flow guide block, and the top surface of the inside of the cabinet body is fixedly connected with a light supplementing lamp.

[0013] The further improvement in the utility model technical scheme lies in that: the air suction device comprises an air exhaust port, the air exhaust port is fixedly connected to the output end of the air inlet, the inside of the air exhaust port is threadedly connected with a plug, the side surface of the plug is fixedly connected with a filter core, the side surface of the plug is fixedly connected with an air outlet pipe, and the output end of the air outlet pipe is fixedly connected with an air exhaust shell.

[0014] The further improvement in the utility model technical scheme lies in that: the air exhaust shell is fixedly connected to one end of the inside of the bottom surface of the cabinet body, the inside of the air exhaust shell is fixedly connected with a second motor, the output end of the second motor is fixedly connected with an air exhaust fan, and the bottom surface of the air exhaust shell is fixedly connected with an air exhaust bin.

[0015] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0016] 1、The utility model provides a laboratory fume hood with air supplementing structure, through motor one drives air supplementing fan rotation produces suction, gas is filtered through filter screen and enters the inside of fixed shell at this moment, airflow is guided to the left and right two ends of fixed shell through the guide of wind guide block and is output to the inside of air exhaust device,

[0017] Whether the heating pipe is opened can be selected, the heating pipe can heat air, so that the air output through the air supplementing fan has a certain temperature, and certain comfort can be brought to the user under cold weather without affecting normal experiment progress;

[0018] When the passing rate of the filter screen is poor, the nut fixing the fixed frame can be removed, the fixed frame is opened, the filter screen is removed from the inside of the bottom surface of the fixed frame for cleaning or replacement;

[0019] Air enters the inside of the air guide shell through the air conveying pipe, and is discharged from the air outlet through the guidance of the air guide plate, at this time, the airflow is filtered again by the air outlet filter screen and is transmitted to the inside of the main body mechanism;

[0020] The angle of the movable air guide plate can be adjusted, the angle of the airflow discharge is adjusted, the airflow is also discharged horizontally due to the horizontal arrangement of the air outlet in the inside of the main body mechanism, at this time, the air curtain is formed to block the solution gas from flowing out of the opening end of the main body mechanism in the operation process, and the safety of the operator is ensured.

[0021] 2、The utility model provides a laboratory fume hood with air supplementing structure, through adjusting the lifting door to a certain height, and placing the required articles in the operation of experiment on the top surface of the operation table, the liquid leaked during operation can flow to the top surface of the flow guide block and slide to the inside of the waste liquid box, the waste liquid box can be taken out for convenient treatment, and the light supplementing lamp provides light source for convenient operation;

[0022] The motor two drives the exhaust fan to rotate, so that the suction force generated by the exhaust fan can be matched with the exhaust casing, the air outlet and the exhaust port through the exhaust casing and the air outlet pipe, so that the gas in the inside of the cabinet body is sucked out, the sucked gas can be filtered by the filter element to reduce harmful components, the plug can be removed for replacement, and the gas can be guided to a lower area by the exhaust bin. DETAILED DESCRIPTION

[0023] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0024] Figure 2 It is a structure schematic view of the air supplementing mechanism of the utility model;

[0025] Figure 3 It is a structure schematic view of the exhaust device of the utility model;

[0026] Figure 4 It is a structure schematic view of the main body mechanism of the utility model;

[0027] Figure 5 It is a structure schematic view of the air suction device of the utility model.

[0028] In the diagram: 1. Support legs; 2. Main structure; 21. Cabinet; 22. Storage compartment; 23. Slide rail; 24. Supplemental lighting; 25. Air guide block; 26. Air inlet; 27. Suction device; 271. Exhaust outlet; 272. Exhaust pipe; 273. Exhaust casing; 274. Motor II; 275. Exhaust chamber; 276. Filter element; 277. Plug; 278. Exhaust fan; 3. Cabinet door; 4. Make-up air fan Components: 41. Fixed outer casing; 42. Fixed plate; 43. Motor 1; 44. Supplementary fan; 45. Fixed frame; 46. Filter screen; 47. Exhaust device; 471. Air supply pipe; 472. Air guide casing; 473. Air guide plate; 474. Air outlet; 475. Air outlet filter; 476. Movable air guide plate; 48. Heating tube; 49. Air guide block; 5. Operating table; 6. Waste liquid box; 7. Lifting door. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to embodiments:

[0030] Example 1: As Figures 1-5 As shown, this utility model provides a laboratory fume hood with a make-up air structure, including a support 1, a main body 2 fixedly installed on the top surface of the support 1, a cabinet door 3 movably connected to the bottom side of the main body 2, an operating table 5 fixedly connected inside the main body 2, a waste liquid box 6 movably connected to the bottom inside the main body 2, a lifting door 7 movably connected to the inside of the main body 2, and a make-up air mechanism 4 installed on the top surface of the main body 2.

[0031] The air supply mechanism 4 includes a fixed housing 41, which is fixedly connected to the top surface of the main body mechanism 2. A fixed plate 42 is fixedly connected inside the fixed housing 41. A motor 43 is fixedly connected inside the fixed plate 42. An air supply fan 44 is fixedly connected to the output end of the motor 43. An exhaust device 47 is fixedly connected to the output end of the fixed housing 41.

[0032] The exhaust device 47 includes an air supply pipe 471, which is fixedly connected to the output end of the fixed housing 41. A guide housing 472 is fixedly connected to the bottom surface of the air supply pipe 471. The guide housing 472 is fixedly connected to the inside of the side of the main body 2. A guide plate 473 is fixedly connected inside the guide housing 472.

[0033] An air outlet 474 is fixedly connected to the output end of the air guide housing 472. An air filter 475 is fixedly connected inside the air outlet 474. A movable air guide plate 476 is movably connected to the side of the air outlet 474.

[0034] A heating tube 48 is fixedly connected to the middle of the interior of the fixed housing 41, and an air guide block 49 is fixedly connected to the other end of the interior of the fixed housing 41. A filter screen 46 is movably connected to the input end of the fixed housing 41, and a fixed frame 45 is movably connected to the bottom surface of the filter screen 46.

[0035] In this embodiment, half-cut bolts are fixedly connected to the side of the fixed frame 45 and the fixed housing 41, so that the fixed frame 45 can be fixed to the fixed housing 41 in a closed state by bolt fixation. There are two motors 43, multiple heating tubes 48, which are evenly distributed in the middle of the inner side of the fixed housing 41, and two sets of exhaust devices 47, which are arranged in a opposite state on the inner side of the main body 2.

[0036] Motor 43 drives the auxiliary fan 44 to rotate and generate suction. At this time, the gas enters the interior of the fixed housing 41 after being filtered by the filter screen 46. The airflow is guided by the air guide block 49 to be output to the left and right ends of the fixed housing 41 and then to the interior of the exhaust device 47.

[0037] The heating element 48 can be turned on or off. The heating element 48 can heat the air so that the air output by the supplementary fan 44 has a certain temperature, which can bring a certain level of comfort to the user in cold weather without affecting the normal experimental process.

[0038] When the filter screen 46 has a poor throughput, the filter screen 46 can be cleaned or replaced by removing the nuts that secure the fixing frame 45, opening the fixing frame 45, and removing the filter screen 46 from the bottom inside the fixing frame 45.

[0039] Air enters the interior of the air guide housing 472 through the air supply pipe 471, and is discharged from the air outlet 474 by the air guide plate 473. At this time, the airflow will be filtered again by the air outlet filter 475 and transmitted to the interior of the main body 2.

[0040] The angle of the movable air guide plate 476 can be adjusted to adjust the angle of airflow discharge. Since the air outlet 474 is horizontally set inside the main body 2, the airflow will also be discharged horizontally. At this time, an air curtain will be formed to block the solution gas during the operation from flowing out from the opening end of the main body 2, ensuring the safety of the operator.

[0041] Example 2: As Figures 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the main body 2 includes a cabinet 21, the cabinet 21 is fixedly connected to the top surface of the support 1, the fixed outer shell 41 is fixedly connected to the top surface of the cabinet 21, a storage compartment 22 is opened inside the bottom side of the cabinet 21, the air guide shell 472 is fixedly connected to the inner side of the cabinet 21, an air inlet 26 is fixedly connected to the inner side of the cabinet 21, and an air intake device 27 is fixedly connected to the output end of the air inlet 26.

[0042] The air suction device 27 comprises an exhaust port 271 fixedly connected to the output end of the air inlet 26, a plug 277 is threadedly connected to the inside of the exhaust port 271, a filter core 276 is fixedly connected to the side of the plug 277, an air outlet pipe 272 is fixedly connected to the side of the plug 277, and an exhaust shell 273 is fixedly connected to the output end of the air outlet pipe 272;

[0043] The exhaust shell 273 is fixedly connected to the bottom surface of the cabinet body 21 at one end, a motor two 274 is fixedly connected to the inside of the exhaust shell 273, an exhaust fan 278 is fixedly connected to the output end of the motor two 274, and an exhaust warehouse 275 is fixedly connected to the bottom surface of the exhaust shell 273.

[0044] One end of the inside of the cabinet body 21 is fixedly connected with a sliding rail 23, one end of the bottom surface of the inside of the cabinet body 21 is fixedly connected with a flow guide block 25, and the top surface of the inside of the cabinet body 21 is fixedly connected with a light supplementing lamp 24.

[0045] In this embodiment, the cabinet door 3 is movably arranged in the inside of the storage warehouse 22, the storage warehouse 22 can store necessary items, the lifting door 7 is movably arranged in the inside of the sliding rail 23, the lifting door 7 can slide up and down and can be stopped at a certain height, and the operation table 5 is fixed above the flow guide block 25.

[0046] The lifting door 7 is adjusted to a certain height, and the items required for the experiment are placed on the top surface of the operation table 5 for operation, the liquid leaked during the operation flows to the top surface of the flow guide block 25 and slides into the inside of the waste liquid box 6, the waste liquid box 6 can be taken out for convenient disposal, and the light supplementing lamp 24 provides a light source for convenient operation.

[0047] The motor two 274 drives the exhaust fan 278 to rotate, so that the suction force generated by the exhaust fan 278 can be sucked out through the cooperation of the exhaust shell 273, the air outlet pipe 272 and the exhaust port 271, the gas sucked out can pass through the filter core 276 to reduce the harmful components, the plug 277 can be removed for replacement, and the gas can be guided by the exhaust warehouse 275 to be discharged to a lower area.

[0048] The working principle of the laboratory fume hood with the air supplementing structure will be described below.

[0049] As shown in Figures 1-5 The lifting door 7 is adjusted to a certain height, and the items required for the experiment are placed on the top surface of the operation table 5 for operation, the liquid leaked during the operation flows to the top surface of the flow guide block 25 and slides into the inside of the waste liquid box 6, the waste liquid box 6 can be taken out for convenient disposal, and the light supplementing lamp 24 provides a light source for convenient operation.

[0050] The motor two 274 drives the exhaust fan 278 to rotate, so that the suction force generated by the exhaust fan 278 can be sucked out through the cooperation of the exhaust shell 273, the air outlet pipe 272 and the exhaust port 271, the internal gas of the cabinet body 21 is filtered by the filter core 276 to reduce harmful components, and the filter core 276 can be replaced by removing the plug 277, and the gas is guided by the exhaust bin 275 to a lower area;

[0051] The motor one 43 drives the air supplement fan 44 to rotate to generate suction force, at this time, the gas is filtered by the filter screen 46 and enters the inside of the fixed shell 41, and the air flow is guided by the air guide block 49 and output to the inside of the exhaust device 47 at the left and right ends of the fixed shell 41;

[0052] Whether to open the heating pipe 48 can be selected, the heating pipe 48 can heat the air, so that the air output by the air supplement fan 44 has a certain temperature, and a certain comfort degree can be brought to the user under the condition that the weather is relatively cold and does not affect the normal experiment process;

[0053] When the pass rate of the filter screen 46 is not good, the nut fixing the fixed frame 45 can be removed, the fixed frame 45 is opened, and the filter screen 46 is removed from the inside of the bottom surface of the fixed frame 45 for cleaning or replacement;

[0054] The air enters the air guide shell 472 through the air supply pipe 471, and is discharged from the air outlet 474 through the guide of the air guide plate 473, at this time, the air flow is filtered again by the air outlet filter screen 475 and transmitted to the inside of the main body mechanism 2;

[0055] The angle of the movable air guide plate 476 can be adjusted to adjust the angle of the air flow discharge, and the air flow is also discharged horizontally due to the horizontal arrangement of the air outlet 474 in the inside of the main body mechanism 2, at this time, the air curtain is formed to block the solution gas from flowing out of the opening end of the main body mechanism 2 in the operation process, and the safety of the operator is ensured.

[0056] The above has made a detailed description of the present application, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, within the scope of the modification or improvement without departing from the spirit of the present application, it is within the protection scope of the present application.

Claims

1. A laboratory fume hood with air make-up structure comprising a stand leg (1), characterized in that: The top surface of the supporting leg (1) is fixedly provided with a main body mechanism (2), the side surface bottom end of the main body mechanism (2) is movably connected with a cabinet door (3), the inside of the main body mechanism (2) is fixedly connected with an operation table (5), the inside bottom surface of the main body mechanism (2) is movably connected with a waste liquid box (6), the inside of the main body mechanism (2) is movably connected with a lifting door (7), and the top surface of the main body mechanism (2) is provided with a wind supplementing mechanism (4). The wind supplementing mechanism (4) comprises a fixed shell (41) fixedly connected to the top surface of the main body mechanism (2), a fixed plate (42) fixedly connected to the inside of the fixed shell (41), a motor one (43) fixedly connected to the inside of the fixed plate (42), a wind supplementing fan (44) fixedly connected to the output end of the motor one (43), and an exhaust device (47) fixedly connected to the output end of the fixed shell (41). The inside middle part of the fixed shell (41) is fixedly connected with a heating pipe (48), the other end of the inside of the fixed shell (41) is fixedly connected with a wind guide block (49), the input end of the fixed shell (41) is movably connected with a filter screen (46), and the bottom surface inside of the filter screen (46) is movably connected with a fixed frame (45).

2. The laboratory fume hood with air supplementing structure according to claim 1, characterized in that: The exhaust device (47) comprises a gas conveying pipe (471) fixedly connected to the output end of the fixed shell (41), a wind guide shell (472) fixedly connected to the bottom surface of the gas conveying pipe (471), and a wind guide plate (473) fixedly connected to the inside of the wind guide shell (472).

3. The laboratory fume hood with air make-up structure according to claim 2, characterized in that: The output end of the wind guide shell (472) is fixedly connected with an air outlet (474), the inside of the air outlet (474) is fixedly connected with an air outlet filter screen (475), and the side surface of the air outlet (474) is movably connected with a movable wind guide plate (476).

4. The laboratory fume hood with air make-up structure according to claim 3, characterized in that: The main body mechanism (2) comprises a cabinet body (21) fixedly connected to the top surface of the supporting leg (1), the fixed shell (41) is fixedly connected to the top surface of the cabinet body (21), a storage bin (22) is formed in the inside of the side surface bottom end of the cabinet body (21), the wind guide shell (472) is fixedly connected to the inside side surface of the cabinet body (21), an air inlet (26) is fixedly connected to the inside side surface of the cabinet body (21), and a suction device (27) is fixedly connected to the output end of the air inlet (26).

5. The laboratory fume hood with air make-up structure according to claim 4, characterized in that: One end of the inside of the cabinet body (21) is fixedly connected with a sliding rail (23), the bottom surface of the inside of the cabinet body (21) is fixedly connected with a flow guide block (25), and the top surface of the inside of the cabinet body (21) is fixedly connected with a light supplementing lamp (24).

6. The laboratory fume hood with air make-up structure according to claim 5, characterized in that: The air suction device (27) includes an exhaust port (271) fixedly connected to the output end of the air inlet (26), the inside of the exhaust port (271) is threadedly connected with a plug (277), the side of the plug (277) is fixedly connected with a filter core (276), the side of the plug (277) is fixedly connected with an air outlet pipe (272), and the output end of the air outlet pipe (272) is fixedly connected with an exhaust shell (273).

7. A laboratory fume hood with air make-up structure according to claim 6, characterized in that: The exhaust shell (273) is fixedly connected to the bottom surface of the cabinet body (21) at one end, the inside of the exhaust shell (273) is fixedly connected with a motor two (274), the output end of the motor two (274) is fixedly connected with an exhaust fan (278), and the bottom surface of the exhaust shell (273) is fixedly connected with an exhaust warehouse (275).

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