Anti-corrosion fuming cupboard for chemical laboratory

Abstract

The utility model relates to the field of fuming cupboards, in particular to an anti-corrosion fuming cupboard for a chemical laboratory, which comprises a cupboard body and a fixing sleeve, connecting frames are bilaterally symmetrically mounted at the top in the cupboard body, the fixing sleeve is mounted at the bottoms of the connecting frames, a plurality of through holes are formed in the outer side wall of the fixing sleeve along the circumferential direction, and a partition board is mounted in the middle of the inner side wall of the fixing sleeve. A partition plate is arranged on the fixed sleeve and divides the fixed sleeve into a left cavity and a right cavity, a main shaft is rotationally installed on the end face of the left side in the cabinet body through a bearing, stirring rods are installed on the outer side wall of the main shaft in the circumferential direction of the main shaft, and a first motor is installed on the end face of the right side of the main shaft. And the problems that the bottom layer is difficult to use and the use efficiency is low due to static stacking are avoided.

Description

Technical Field

[0001] This utility model relates to the field of fume hoods, specifically to a corrosion-resistant fume hood for use in chemical laboratories. Background Technology

[0002] A fume hood, also known as a smoke hood, is a large piece of equipment used in laboratories, especially chemical laboratories. Its purpose is to reduce the exposure of experimenters to harmful gases. Complete isolation requires a glove box. Fume hoods are a primary barrier protecting personnel from the hazards of toxic chemical fumes. They can also serve as important backup safety equipment, effectively removing harmful gases and protecting staff and the laboratory environment in cases of failed chemical experiments or the generation of chemical fumes, dust, and toxic gases.

[0003] A Chinese patent discloses a corrosion-resistant fume hood for chemical laboratories (authorization announcement number CN 219309626 U). This patented technology has a relatively limited function during testing, and additional equipment is required for the storage of chemical substances, which increases the cost of laboratory construction.

[0004] The patented cabinet lacks measures for absorbing toxic gases and dehumidifying, and the desiccant and activated carbon are generally fixed in place, resulting in insufficient use of the medicine located at the bottom. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a corrosion-resistant fume hood for a chemical laboratory, including a cabinet body and a fixing sleeve. A connecting frame is symmetrically installed on the top left and right sides of the cabinet body, and a fixing sleeve is installed at the bottom of the connecting frame. Multiple through holes are opened on the outer side wall of the fixing sleeve along its circumferential direction. A partition is installed in the middle of the inner side wall of the fixing sleeve, dividing the fixing sleeve into a left cavity and a right cavity. A main shaft is rotatably installed on the left end face of the cabinet body through a bearing. A stirring rod is installed on the outer side wall of the main shaft along its circumferential direction. A first motor is installed on the right end face of the main shaft. An air inlet pipe is installed on the upper end face of the cabinet body, and an air outlet pipe is installed on the rear end face of the cabinet body. A first valve is installed on the outer side wall of the air outlet pipe.

[0006] Preferably, a humidity sensor is installed on the left end face of the cabinet body, and a control panel is arranged to the left of the humidity sensor. The humidity sensor and the control panel are electrically connected.

[0007] Preferably, a filter screen is installed in the middle of the cabinet body.

[0008] Preferably, an adjusting cylinder is installed at the top of the cabinet body, a fixed frame is installed at the output end of the adjusting cylinder, an upper shaft is installed on the upper surface of the fixed frame, multiple scrapers are installed on the outer side wall of the upper shaft from top to bottom, and a scraper is installed at the bottom of the fixed frame.

[0009] Preferably, a connecting pipe is installed on the rear end face of the cabinet, a second valve is installed on the outer wall of the connecting pipe, and a vacuum cleaner is installed on the rear end face of the connecting pipe.

[0010] Preferably, the fixing sleeve has side cover plates symmetrically screwed onto its left and right side walls.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model adopts a fixed sleeve and stirring rod structure to stir the desiccant and activated carbon, so that they can be fully utilized and avoid static stacking that makes the bottom layer difficult to use and results in low utilization efficiency.

[0013] 2. This utility model adopts an upper shaft and scraper structure. The scraper scrapes and cleans the inner wall of the air intake pipe to prevent it from becoming blocked. The beater beats the filter screen to make the dust fly up and prevent the filter screen from becoming blocked. Attached Figure Description

[0014] Figure 1 This is a front view of a corrosion-resistant fume hood structure for a chemical laboratory provided in an embodiment of this application;

[0015] Figure 2 This is a rear view of the structure of a corrosion-resistant fume hood for a chemical laboratory provided in an embodiment of this application;

[0016] Figure 3 This is a first sectional front view of a corrosion-resistant fume hood for a chemical laboratory provided in an embodiment of this application;

[0017] Figure 4 This is a second sectional front view of a corrosion-resistant fume hood for a chemical laboratory provided in an embodiment of this application;

[0018] Figure 5 This is a cross-sectional left view of a corrosion-resistant fume hood for a chemical laboratory provided in an embodiment of this application;

[0019] In the diagram: 1. Cabinet body; 2. Fixing sleeve; 11. Partition; 12. Main shaft; 13. Stirring rod; 14. First motor; 15. Air inlet pipe; 16. Air outlet pipe; 17. Humidity sensor; 18. Control panel; 19. Filter screen; 21. Adjusting cylinder; 22. Upper shaft; 23. Scraper; 24. Patting rod; 25. Connecting pipe; 26. Vacuum cleaner; 27. Side cover. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0021] Please see Figures 1-5 This embodiment provides a corrosion-resistant fume hood for a chemical laboratory, comprising a cabinet body 1 and a fixing sleeve 2. A connecting frame is symmetrically installed on the top left and right sides of the cabinet body 1, and the fixing sleeve 2 is installed at the bottom of the connecting frame. Multiple through holes are formed on the outer wall of the fixing sleeve 2 along its circumferential direction. A partition 11 is installed in the middle of the inner wall of the fixing sleeve 2, dividing the fixing sleeve 2 into a left cavity and a right cavity. A main shaft 12 is rotatably mounted on the left end face of the cabinet body 1 via a bearing. A stirring rod 13 is installed on the outer wall of the main shaft 12 along its circumferential direction. A first motor 14 is installed on the right end face of the main shaft 12. An air inlet is installed on the upper end face of the cabinet body 1. Pipe 15, an air outlet pipe 16 is installed on the rear end face of cabinet 1, and a first valve is installed on the outer wall of the air outlet pipe 16. During operation, gas enters cabinet 1 through air inlet pipe 15. Desiccant is arranged in the left cavity and activated carbon is arranged in the right cavity, so as to absorb toxic gas and dehumidify at the same time, avoiding corrosion inside cabinet 1. The first motor 14 starts, driving the main shaft 12 to rotate, and the stirring rod 13 rotates, thereby stirring the desiccant and activated carbon to make them fully utilized and avoid static stacking that leads to low utilization efficiency. Then the gas is discharged through air outlet pipe 16.

[0022] A humidity sensor 17 is installed on the left side of the cabinet 1. A control panel 18 is arranged to the left of the humidity sensor 17. The humidity sensor 17 and the control panel 18 are electrically connected. When working, the control panel 18 is programmed with a PLC to control the operation of each device. The humidity sensor 17 detects the humidity inside the cabinet 1 to determine whether the desiccant has failed.

[0023] A filter screen 19 is installed in the middle of the cabinet body 1. When working, after the gas enters the cabinet body 1, the filter screen 19 filters the dust in the gas.

[0024] An adjusting cylinder 21 is installed at the top of the cabinet 1. A fixed frame is installed at the output end of the adjusting cylinder 21. An upper shaft 22 is installed on the upper surface of the fixed frame. Multiple scrapers 23 are installed from top to bottom on the outer wall of the upper shaft 22. A beater 24 is installed at the bottom of the fixed frame. During operation, after a long period of operation, dust in the gas easily adheres to the inner wall of the air inlet pipe 15. When the adjusting cylinder 21 is activated, it drives the upper shaft 22 to move upward, so that the scrapers 23 scrape and clean the inner wall of the air inlet pipe. When the adjusting cylinder 21 moves downward, it controls the beater 24 to beat the filter screen 19, so that the dust is thrown up and the filter screen 19 is prevented from becoming clogged.

[0025] A connecting pipe 25 is installed on the rear end face of the cabinet body 1. A second valve is installed on the outer wall of the connecting pipe 25. A vacuum cleaner 26 is installed on the rear end face of the connecting pipe 25. When working, the second valve opens after the beater 24 beats, and the vacuum cleaner 26 adsorbs the dust that is raised, which improves the cleaning efficiency of the dust on the filter screen 19.

[0026] The fixed sleeve 2 is symmetrically screwed with side cover plates 27 on its left and right side walls. During operation, the side cover plates 27 can be rotated to open, making it easy to replace the activated carbon and desiccant.

[0027] In operation, the gas enters the cabinet 1 through the air inlet pipe 15. A desiccant is placed in the left cavity and activated carbon is placed in the right cavity, which can absorb toxic gases and dehumidify them at the same time, thus preventing corrosion inside the cabinet 1. The first motor 14 is started, which drives the main shaft 12 to rotate. The stirring rod 13 rotates, thereby stirring the desiccant and activated carbon to ensure that they are fully utilized and to avoid low efficiency due to static stacking. Then the gas is discharged through the air outlet pipe 16.

[0028] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A corrosion-proof fume hood for chemical laboratories, comprising a cabinet (1) and a fixed cover (2), characterized in that, The left and right symmetrical connecting frame is installed in the top of the cabinet body (1), the fixed sleeve (2) is installed at the bottom of the connecting frame, a plurality of through holes are formed in the outer side wall of the fixed sleeve (2) along the circumferential direction, the partition plate (11) is installed in the middle of the inner side wall of the fixed sleeve (2), the fixed sleeve (2) is divided into left and right cavities by the partition plate (11), the main shaft (12) is rotatably installed on the left end surface of the cabinet body (1) through the bearing, the stirring rod (13) is installed on the outer side wall of the main shaft (12) along the circumferential direction, and the first motor (14) is installed on the right end surface of the main shaft (12).

2. A fume hood for chemical laboratories according to claim 1, characterized in that, The air inlet pipe (15) is installed on the upper end surface of the cabinet body (1), the air outlet pipe (16) is installed on the rear end surface of the cabinet body (1), and the first valve is installed on the outer side wall of the air outlet pipe (16).

3. A fume hood for chemical laboratories according to claim 1, characterized in that, The humidity sensor (17) is installed on the left end surface in the cabinet body (1), the control panel (18) is arranged to the left of the humidity sensor (17), and the humidity sensor (17) and the control panel (18) are electrically connected.

4. A fume hood for chemical laboratories according to claim 3, characterized in that, The filter screen (19) is installed in the middle of the cabinet body (1).

5. A fume hood for chemical laboratories according to claim 1, characterized in that, The adjusting cylinder (21) is installed on the top of the cabinet body (1), the fixed frame is installed at the output end of the adjusting cylinder (21), the upper shaft (22) is installed on the upper end surface of the fixed frame, and a plurality of scrapers (23) are installed on the outer side wall of the upper shaft (22) from top to bottom.

6. A fume hood for chemical laboratories according to claim 5, characterized in that, The fixed frame is installed on the bottom of the cabinet body (1).

7. A fume hood for chemical laboratories according to claim 1, characterized in that, The connecting pipe (25) is installed on the rear end surface of the cabinet body (1), the second valve is installed on the outer side wall of the connecting pipe (25), and the dust collector (26) is installed on the rear end surface of the connecting pipe (25).

8. A fume hood for chemical laboratories according to claim 1, characterized in that, The side cover plate (27) is symmetrically screwed on the left and right side walls of the fixed sleeve (2).

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