Laboratory ventilation and purification cabinet

Abstract

The utility model relates to the technical field of ventilation and purification cabinets, in particular to a laboratory ventilation and purification cabinet which comprises a box body, a working bin is arranged on the upper portion of the front side of the box body, two illuminating lamps are arranged in the working bin and are symmetrical in the left-right direction, and filtering mechanisms are installed on the outer walls of the left side and the right side of the box body. A storage bin is formed in the lower side of the working bin, sliding grooves are formed in the inner walls of the left side and the right side of the storage bin, a protection mechanism is installed on the front side of the box body, storage drawers are arranged in the storage bin, sliding blocks are installed on the left side and the right side of each storage drawer, and handle grooves are formed in the front sides of the two storage drawers. The whole inserting rod can be moved out of the inserting hole by moving the moving block towards the right side, so that the filter plate can be conveniently replaced later, and the problem that the filter plate is inconvenient to replace later is solved.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and purification cabinet technology, specifically to a laboratory ventilation and purification cabinet. Background Technology

[0002] Fume hoods are key pieces of experimental equipment in laboratories. Inside the fume hood, researchers can prepare and react various chemical reagents, and then the fume hood purifies and removes various harmful gases, thereby protecting the safety of the researchers.

[0003] A Chinese patent discloses a laboratory fume hood fume purification device (authorization announcement number CN208466810U). This patented technology can absorb fumes by using a fume hood and a water collection tank. The bottom area of ​​the fume hood is the same size as the experimental platform, which facilitates the absorption of fumes and prevents fumes from leaking out and polluting the environment. At the same time, some gases are easily liquefied during the gas rise, which can be easily collected by the water collection tank to avoid affecting the normal operation of the experiment. However, the device is not simple to disassemble, and the disassembly is relatively complicated. In addition, it does not completely filter out toxic substances inside the gas.

[0004] Therefore, those skilled in the art have provided a laboratory ventilation and purification cabinet to solve the problems mentioned in the background art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a laboratory ventilation and purification cabinet, including a cabinet body, a working compartment located on the upper front side of the cabinet body, and two symmetrically arranged lighting lamps inside the working compartment; a filter mechanism installed on the left and right outer walls of the cabinet body; a storage compartment located on the lower side of the working compartment, with sliding grooves on the left and right inner walls of the storage compartment; a protective mechanism installed on the front side of the cabinet body; a storage drawer located inside the storage compartment, with sliders installed on both the left and right sides of the storage drawer; and handle slots on the front sides of the two storage drawers.

[0006] Preferably, the top of the housing has a threaded groove, and there are two threaded grooves that are symmetrically arranged on the left and right sides; each of the two threaded grooves is equipped with a mounting frame, and the bottom of the mounting frame has a slot.

[0007] Preferably, the top of the mounting frame is provided with an internal threaded sleeve; a fan is provided inside the mounting frame, and a rotating rod is provided in the middle of the fan, with a motor inside the rotating rod.

[0008] Preferably, the filtration mechanism includes a filter box, which is installed on the outside of the housing; the filter box has two symmetrically arranged filters; all mechanisms on the two filter boxes are identical; the filter box has a first chamber and a second chamber; the first chamber contains a filter plate; the second chamber contains a purification liquid, and the bottom of the second chamber has a drain port with a mounting cover installed at the bottom of the drain port; the two chambers are connected; the filter box has an exhaust pipe on the upper left side; the top of the first chamber has an air extraction pipe, the other end of which is installed in a threaded groove; the air extraction pipe has an air pump; firstly, the motor is started to drive the rotating rod to rotate, which in turn drives the fan to rotate, and the fan transports the toxic gas inside the working chamber to the mounting frame when it rotates.

[0009] Preferably, both filter boxes have a movable groove located on the upper side of the second cavity; a handle is installed on the upper side of the filter plate, and an insertion hole is provided on one side of the filter plate; all components in the two movable grooves are identical, a movable block is installed in the movable groove, a spring is provided on the left side of the movable block, a limit rod is inserted into the movable block, the limit rod is installed in the spring, and the movable block can move left and right on the limit rod; an insertion rod is provided on the right side of the movable block, and the insertion rod is inserted into the insertion hole.

[0010] Preferably, the protective mechanism includes a baffle, which is installed on the front side of the working compartment and has a rotating shaft between the baffle and the housing. A handle is provided on the top outer side of the baffle. An installation block is installed on the bottom inner side of the baffle, and the installation block has two symmetrically arranged blocks. Folding rods are provided on the two installation blocks, and the other ends of the two folding rods are installed on the inner side of the housing and connected by a rotating rod.

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

[0012] 1. This utility model provides a laboratory ventilation and purification cabinet. First, the motor is started to drive the rotating rod to rotate, which in turn drives the fan to rotate. When the fan rotates, it transports the toxic gas inside the working chamber to the mounting frame. Then, by starting the air pump, the exhaust gas during the experiment is transported to the filter box through the exhaust pipe. After being filtered by the filter plate, the exhaust gas enters the second chamber, and then undergoes secondary filtration through the purification liquid. Finally, it is discharged through the exhaust pipe, thereby protecting the safety of the experimental personnel.

[0013] 2. In this utility model, the protective mechanism can be used by pulling the handle outward to lift the folding rod, thereby unfolding the baffle, facilitating future work and protecting the internal structure to a certain extent.

[0014] 3. In this utility model, the entire insertion rod can be moved out of the insertion hole by moving the moving block to the right, which makes it easier to replace the filter plate later and solves the problem of inconvenience in replacing the filter plate later. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a laboratory ventilation and purification cabinet provided in an embodiment of this application;

[0016] Figure 2 This application provides an embodiment of an explosion in a laboratory fume hood. Figure 1 ;

[0017] Figure 3 This application provides an embodiment of an explosion in a laboratory fume hood. Figure 2 ;

[0018] Figure 4 This is a partial structural diagram of a laboratory ventilation and purification cabinet provided in an embodiment of this application;

[0019] Figure 5 This is a cross-sectional view of a laboratory ventilation and purification cabinet provided in an embodiment of this application;

[0020] Figure 6 This application provides an embodiment of a laboratory ventilation and purification cabinet. Figure 5 An enlarged structural diagram of point A.

[0021] In the diagram: 1. Box body; 101. Threaded groove; 102. Slide groove; 2. Storage drawer; 21. Slider; 22. Handle groove; 23. Support foot; 3. Filter box; 301. First chamber; 302. Second chamber; 31. Mounting cover; 32. Moving groove; 33. Exhaust pipe; 34. Suction pipe; 35. Air pump; 4. Baffle; 41. Rotating shaft; 42. Handle; 43. Folding rod; 431. Mounting block; 44. Rotating rod; 5. Lighting lamp; 7. Filter plate; 71. Moving block; 72. Spring; 73. Limiting rod; 74. Insert rod; 8. Mounting frame; 81. Internal threaded sleeve; 9. Fan. Detailed Implementation

[0022] 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.

[0023] Example

[0024] Please see Figures 1-6This embodiment provides a laboratory ventilation and purification cabinet, including a cabinet body 1. The bottom of the cabinet body 1 is provided with support feet 23, four of which are symmetrically arranged to support the entire cabinet body 1. A working compartment is provided on the upper front side of the cabinet body 1. The working compartment is provided with lighting lamps 5, two of which are symmetrically arranged to the left and right. Filter mechanisms are installed on the outer walls of the left and right sides of the cabinet body 1. A storage compartment is opened on the lower side of the working compartment. The inner walls of the storage compartment on the left and right sides are provided with sliding grooves 102. A protective mechanism is installed on the front side of the cabinet body 1. A storage drawer 2 is provided in the storage compartment. Slider 21 is installed on both the left and right sides of the storage drawer 2. The slider 21 is embedded in the sliding groove 102, and the storage drawer 2 can be moved back and forth by the slider 21. Handle slots 22 are opened on the front of the two storage drawers 2, and the storage drawers 2 can be opened and closed by holding the handle slots 22.

[0025] The top of the housing 1 has a threaded groove 101, and there are two threaded grooves 101 symmetrically arranged on the left and right sides. Each of the two threaded grooves 101 is equipped with a mounting frame 8, and the bottom of the mounting frame 8 has a slot. The top of the mounting frame 8 is equipped with an internal threaded sleeve 81. A fan 9 is installed inside the mounting frame 8, and a rotating rod is installed in the middle of the fan 9. The rotating rod has a motor inside. By starting the motor, the rotating rod is driven to rotate, which in turn drives the fan 9 to rotate. When the fan 9 rotates, it transports the toxic gas inside the working chamber to the filtration mechanism for filtration.

[0026] The filtration mechanism includes a filter box 3, which is installed on the outside of the housing 1. Two filter boxes 3 are provided symmetrically. All mechanisms on the two filter boxes 3 are identical; taking the left filter box 3 as an example, each filter box 3 has a first cavity 301 and a second cavity 302. The first cavity 301 contains a filter plate 7. The second cavity 302 contains a purification liquid, and its bottom has a drain port with a mounting cover 31. The two cavities are connected. An exhaust pipe 33 is located slightly above the left side of the filter box 3. The first cavity 301... The top of 1 is provided with an exhaust pipe 34, and the other end of the exhaust pipe 34 is installed in the threaded groove 101; the exhaust pipe 34 is provided with an air pump 35; firstly, the motor is started to drive the rotating rod to rotate, which in turn drives the fan 9 to rotate. When the fan 9 rotates, it transports the toxic gas inside the working chamber to the mounting frame 8. Then, by starting the air pump 35 and transporting the waste gas during the experiment through the exhaust pipe 34 to the filter box 3, the waste gas is filtered by the filter plate 7 and then enters the second chamber 302. Then it is filtered again by the purification liquid and finally discharged through the exhaust pipe 33, thereby protecting the safety of the experimental personnel.

[0027] Both filter boxes 3 have a movable groove 32 located on the upper side of the second cavity 302. A handle is installed on the upper side of the filter plate 7, and an insertion hole is provided on one side of the filter plate 7. All components in the two movable grooves 32 are identical. Taking the left one as an example, a movable block 71 is installed in the movable groove 32. A spring 72 is provided on the left side of the movable block 71, and a limiting rod 73 is inserted into the movable block 71. The limiting rod 73 is installed in the spring 72, and the movable block 71 can move left and right on the limiting rod 73. An insertion rod 74 is provided on the right side of the movable block 71. The insertion rod 74 is inserted into the insertion hole. By moving the movable block 71 to the right, the entire insertion rod 74 can be moved out of the insertion hole, which facilitates the replacement of the filter plate 7 in the future and solves the problem of inconvenience in replacing the filter plate 7 in the future.

[0028] The protective mechanism includes a baffle 4, which is installed on the front side of the working compartment. A rotating shaft 41 is provided between the baffle 4 and the housing 1. A handle 42 is provided on the top outer side of the baffle 4. An installation block 431 is installed on the bottom inner side of the baffle 4. There are two symmetrical installation blocks 431. Folding rods 43 are provided on the two installation blocks 431. The other end of the two folding rods 43 is installed on the inner side of the housing 1, and the two are connected by a rotating rod 44. When the protective mechanism is in use, the baffle 4 can be unfolded by pulling the handle 42 outward, thereby supporting the folding rods 43, which facilitates future work and protects the internal structure to a certain extent.

[0029] 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 laboratory fume hood comprising a cabinet (1), the bottom of the cabinet (1) is provided with supporting feet (23), the supporting feet (23) are symmetrical to each other and four in number, characterized in that, The upper side of the front side of the box (1) is provided with a working bin, and the inside of the working bin is provided with illuminating lamps (5), and the illuminating lamps (5) are symmetrical to left and right; the outer walls of the left and right sides of the box (1) are provided with filtering mechanisms; the lower side of the working bin is provided with a storage bin, and the inner walls of the left and right sides of the storage bin are provided with sliding grooves (102); the front side of the box (1) is provided with a protection mechanism; the inside of the storage bin is provided with a storage drawer (2), and the left and right sides of the storage drawer (2) are both provided with sliding blocks (21); the front side of the two storage drawers (2) is provided with a handle groove (22).

2. A laboratory fume hood according to claim 1, wherein, The top of the box (1) is provided with threaded grooves (101), and the threaded grooves (101) are symmetrical to left and right; the installation frames (8) are installed on the two threaded grooves (101), and the bottom of the installation frame (8) is provided with a notch.

3. A laboratory fume hood according to claim 2, wherein, The top of the installation frame (8) is provided with an internal thread sleeve (81); the installation frame (8) is provided with a fan (9), and the rotating rod inside the fan (9) is provided with a motor.

4. A laboratory fume hood according to claim 1, wherein, The filtering mechanism comprises filtering boxes (3), and the filtering boxes (3) are installed on the outside of the box (1); the filtering boxes (3) are symmetrical to left and right; the mechanisms on the two filtering boxes (3) are the same, the filtering boxes (3) are provided with first cavities (301) and second cavities (302); the first cavities (301) are provided with filtering plates (7); the second cavities (302) are provided with purification liquid, and the bottom of the second cavity (302) is provided with a liquid outlet, and the bottom of the liquid outlet is provided with an installation cover (31); the two cavities are communicated; the left side of the filtering box (3) is provided with an exhaust pipe (33); the top of the first cavity (301) is provided with an air extraction pipe (34), and the other end of the air extraction pipe (34) is installed in the threaded groove (101); the air extraction pipe (34) is provided with an air pump (35).

5. A laboratory fume hood according to claim 4, wherein, The two filtering boxes (3) are both provided with moving grooves (32), and the moving grooves (32) are located on the upper side of the second cavity (302); the upper side of the filtering plate (7) is provided with a handle rod, and one side of the filtering plate (7) is provided with a jack.

6. A laboratory fume hood according to claim 5, wherein, The moving grooves (32) are both provided with the same parts, the moving grooves (32) are provided with moving blocks (71), the left side of the moving block (71) is provided with a spring (72), the moving block (71) is provided with a limiting rod (73), and the limiting rod (73) is installed in the spring (72); the right side of the moving block (71) is provided with a plug rod (74).

7. A laboratory fume hood according to claim 1, wherein, The protection mechanism comprises a baffle (4), the baffle (4) is installed on the front side of the working bin, and the baffle (4) and the box (1) are provided with a rotating shaft (41), the top outside of the baffle (4) is provided with a handle (42); the bottom inside of the baffle (4) is provided with an installation block (431), and the installation block (431) is symmetrical to left and right; the two installation blocks (431) are provided with folding rods (43), and the other ends of the two folding rods (43) are installed on the inside of the box (1), and the two are connected through a rotating rod (44).

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