Laboratory fume hood exhaust pipeline

Abstract

The utility model relates to the field of laboratory equipment, and discloses a laboratory fume hood exhaust duct, which comprises a laboratory fume hood mounting part, an exhaust duct and a ventilation duct, the adjusting and maintaining mechanism comprises a hydraulic cylinder, a push plate, an exhaust pipe, an exhaust hood, a box body, an air bag, an abutting block, a guide pipe, a piston piece, a bottom plate and a vertical plate. The hydraulic cylinder is fixedly installed at the bottom of the laboratory fume hood installation part, a hydraulic rod of the hydraulic cylinder is fixedly connected with the push plate, the exhaust pipe is fixedly connected with the push plate, the exhaust hood is fixedly connected with the exhaust pipe, the box body is fixedly installed on the exhaust hood, and the air bag is fixedly installed on the inner wall of one side of the box body. The smoke exhaust device has the following advantages and effects that when a large amount of smoke is generated by an experimental object, the exhaust hood can be quickly moved downwards to be close to the smoke position, so that the smoke suction capacity is enhanced, smoke pollutants are discharged in time, and the filter plate and the activated carbon plate are extremely convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, and in particular to a laboratory fume hood exhaust duct. Background Technology

[0002] A fume hood is a commonly used laboratory instrument. When researchers conduct experiments in a fume hood, the smoke pollutants generated during the experiment can be drawn away by the fume hood's exhaust system and discharged into the ventilation duct connected to the exhaust system, thus preventing researchers from inhaling the smoke pollutants and causing poisoning.

[0003] In existing technologies, exhaust ducts are mostly fixed installations, and fume hoods cannot specifically extract smoke generated at experimental locations. A large amount of smoke pollutants cannot be discharged in time, and staff working in fume hoods may inhale the pollutants that have not been discharged in time, which may harm their health. In addition, current exhaust ducts are equipped with filter plates and activated carbon plates to purify the exhaust air, but the current installation method is mostly bolt-fixed, which is not convenient for later disassembly and maintenance. Therefore, it is necessary to design a laboratory fume hood exhaust duct to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a laboratory fume hood exhaust duct to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a laboratory fume hood exhaust duct, comprising:

[0007] A laboratory fume hood mounting kit, wherein the laboratory fume hood mounting kit is equipped with an adjustment and maintenance mechanism;

[0008] The adjustment and maintenance mechanism includes a hydraulic cylinder, a push plate, an exhaust pipe, an exhaust hood, a box, an airbag, a contact block, a guide tube, a piston, a base plate, and a vertical plate.

[0009] The hydraulic cylinder is fixedly installed at the bottom of the laboratory fume hood mounting component. The hydraulic rod of the hydraulic cylinder is fixedly connected to the push plate. The exhaust pipe is fixedly connected to the push plate. The exhaust hood is fixedly connected to the exhaust pipe. The box body is fixedly installed on the exhaust hood. The airbag is fixedly installed on one inner wall of the box body. The abutment block is fixedly connected to one side of the airbag. The duct is fixedly connected to the airbag. The piston is slidably and sealingly installed on the duct. The base plate is fixedly connected to the piston. The vertical plate is fixedly installed at the bottom of the laboratory fume hood mounting component.

[0010] A further feature of this invention is that the adjustment and maintenance mechanism includes a filter plate, an activated carbon plate, a counterweight plate, a baffle, a sleeve plate, and a spring. The counterweight plate is fixedly installed on the top of the activated carbon plate, the baffle is fixedly installed on the inner wall of the exhaust hood, the bottom of the baffle is in contact with the counterweight plate, the top of the filter plate is in contact with the activated carbon plate, the top of the abutment block is in contact with the filter plate, the sleeve plate is fixedly sleeved on the outside of the duct, and the spring is fixedly installed between the base plate and the sleeve plate.

[0011] A further feature of this invention is that the top of the laboratory fume hood mounting component has a movable hole, and the exhaust pipe is vertically slidably installed in the movable hole.

[0012] By adopting the above technical solution, the exhaust duct can be moved vertically.

[0013] A further feature of this invention is that the conduit is fixedly installed on the box body and is connected to the inside of the airbag.

[0014] A further feature of this invention is that a sliding hole is provided on the side of the exhaust hood, and the abutment block is slidably installed in the sliding hole.

[0015] By adopting the above technical solution, the abutment block can move laterally.

[0016] A further feature of this invention is that the bottom of the vertical plate is in contact with the base plate.

[0017] By adopting the above technical solution, the base plate is limited.

[0018] A further feature of this invention is that a corrugated pipe is fixedly installed at the top of the exhaust pipe.

[0019] A further feature of this invention is that both the filter plate and the activated carbon plate are in contact with the inner walls of the exhaust hood.

[0020] The beneficial effects of this utility model are:

[0021] Through the coordinated action of hydraulic cylinders, push plates, exhaust pipes and exhaust hoods, the height of the exhaust hood can be flexibly adjusted according to the actual situation of smoke generation in the experiment. When the experimental object generates a large amount of smoke, the exhaust hood can be quickly moved down to the smoke location to enhance the smoke absorption capacity, timely discharge smoke pollutants, effectively prevent smoke from accumulating in the fume hood, greatly reduce the risk of experimental personnel inhaling smoke pollutants, and better protect the health of experimental personnel.

[0022] The unique structure, consisting of an airbag, abutment block, conduit, and piston, makes maintenance of the filter plate and activated carbon plate extremely convenient. Simply activate the hydraulic cylinder to move the exhaust hood upward, and the abutment block will separate from the filter plate through a simple mechanical linkage. The filter plate, activated carbon plate, and counterweight plate will then automatically move downward due to gravity, making it easy for staff to quickly remove them for cleaning, replacement, and other maintenance operations. Compared to the traditional bolt fixing method, this greatly saves maintenance time and labor costs and improves maintenance efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the exhaust duct of a laboratory fume hood proposed in this utility model.

[0025] Figure 2 This is a cross-sectional structural diagram of the exhaust duct of a laboratory fume hood proposed in this utility model.

[0026] Figure 3 yes Figure 2 A schematic diagram of part A in the diagram.

[0027] Figure 4 yes Figure 2 A schematic diagram of part B in the diagram.

[0028] In the diagram, 1. Laboratory fume hood mounting components; 2. Hydraulic cylinder; 3. Push plate; 4. Exhaust duct; 5. Exhaust hood; 6. Filter plate; 7. Activated carbon plate; 8. Counterweight plate; 9. Baffle; 10. Box body; 11. Airbag; 12. Abutment block; 13. Conduit; 14. Piston; 15. Sleeve plate; 16. Base plate; 17. Spring; 18. Vertical plate; 19. Corrugated pipe. Detailed Implementation

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0030] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. 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 based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a laboratory fume hood exhaust duct, comprising:

[0032] Laboratory fume hood mounting component 1 is equipped with an adjustment and maintenance mechanism. It should be noted that when a large amount of smoke is generated by the experimental object below the exhaust hood 5 of the laboratory fume hood, the exhaust hood 5 can be moved down to the smoke area to promptly discharge the large amount of smoke. It also facilitates quick disassembly and maintenance of the filter plate 6 and activated carbon plate 7.

[0033] The adjustment and maintenance mechanism includes a hydraulic cylinder 2, a push plate 3, an exhaust pipe 4, an exhaust hood 5, a box body 10, an air bag 11, an abutment block 12, a guide tube 13, a piston 14, a base plate 16, and a vertical plate 18.

[0034] Hydraulic cylinder 2 is fixedly installed at the bottom of laboratory fume hood mounting part 1. The hydraulic rod of hydraulic cylinder 2 is fixedly connected to push plate 3. Exhaust pipe 4 is fixedly connected to push plate 3. Exhaust hood 5 is fixedly connected to exhaust pipe 4. Box body 10 is fixedly installed on exhaust hood 5. Airbag 11 is fixedly installed on one side inner wall of box body 10. It should be noted that the two airbags 11 are respectively fixedly connected to the inner walls of the two boxes 10 on the opposite sides. That is, only one side of airbag 11 is fixed to the inner wall of box body 10.

[0035] The abutment block 12 is fixedly connected to one side of the airbag 11, the conduit 13 is fixedly connected to the airbag 11, the piston 14 is slidably and sealed on the conduit 13, the base plate 16 is fixedly connected to the piston 14, and the vertical plate 18 is fixedly installed at the bottom of the laboratory fume hood mounting part 1.

[0036] With the above structure, when a large amount of smoke is generated by the experimental object under the exhaust hood 5 of the laboratory fume hood, the hydraulic cylinder 2 is activated, causing the push plate 3 to move the exhaust pipe 4 downward. The exhaust pipe 4 then moves the exhaust hood 5 downward, bringing the exhaust hood 5 closer to the smoke and promptly discharging the large amount of smoke. Subsequently, when maintenance is required on the top of the filter plate 6 and the activated carbon plate 7, the hydraulic cylinder 2 is activated, causing the exhaust hood 5 to move upward, which in turn moves the duct 13 upward. The bottom plate 16 is blocked by the vertical plate 18, and the piston 14 remains stationary. The bottom plate 16 stretches the spring 17, which can extract some air from the airbag 11, causing the airbag 11 to contract. The contracted airbag 11 will move the abutment block 12, causing the abutment block 12 to separate from the filter plate 6. At this time, the filter plate 6, activated carbon plate 7, and counterweight plate 8 move downward due to their own gravity, making it convenient for staff to quickly remove them for maintenance. This makes the system easy to use.

[0037] Specifically, the adjustment and maintenance mechanism also includes a filter plate 6, an activated carbon plate 7, a counterweight plate 8, a baffle 9, a sleeve plate 15, and a spring 17. The counterweight plate 8 is fixedly installed on the top of the activated carbon plate 7, the baffle 9 is fixedly installed on the inner wall of the exhaust hood 5, the bottom of the baffle 9 is in contact with the counterweight plate 8, the top of the filter plate 6 is in contact with the activated carbon plate 7, the top of the abutment block 12 is in contact with the filter plate 6, the sleeve plate 15 is fixedly sleeved on the outside of the duct 13, and the spring 17 is fixedly installed between the base plate 16 and the sleeve plate 15.

[0038] The above structure allows for the limiting of the filter plate 6 and the activated carbon plate 7, ensuring their stability.

[0039] Specifically, the laboratory fume hood mounting component 1 has a movable hole at the top, and the exhaust pipe 4 is vertically slidably installed in the movable hole. A corrugated pipe 19 is fixedly installed at the top of the exhaust pipe 4. It should be noted that this allows the exhaust pipe 4 to move stably vertically, and the top of the corrugated pipe 19 is connected to the external exhaust pipe.

[0040] Specifically, the conduit 13 is fixedly installed on the box body 10 and is connected to the inside of the airbag 11. The exhaust hood 5 has a sliding hole on its side and the abutment block 12 is slidably installed in the sliding hole. It should be noted that this allows the abutment block 12 to move stably in the lateral direction.

[0041] Specifically, the bottom of the vertical plate 18 is in contact with the base plate 16. It should be noted that the base plate 16 can be limited.

[0042] Specifically, both the filter plate 6 and the activated carbon plate 7 are in contact with the inner walls of the exhaust hood 5. It should be noted that this allows for the purification of the extracted air.

[0043] During normal use, when a large amount of smoke is generated by the experimental object under the exhaust hood 5 of the laboratory fume hood, the hydraulic cylinder 2 is activated. The hydraulic rod of the hydraulic cylinder 2 extends and drives the push plate 3 to move downward. The push plate 3 is fixedly connected to the exhaust pipe 4, so the exhaust pipe 4 also moves downward. The exhaust pipe 4 drives the exhaust hood 5 to move downward, so that the exhaust hood 5 is close to the place where the smoke is generated, thereby enabling the large amount of smoke to be discharged in time. When maintenance is required on filter plate 6 and activated carbon plate 7, hydraulic cylinder 2 is activated, causing the hydraulic rod to retract, which in turn moves push plate 3, exhaust pipe 4, and exhaust hood 5 upwards. At this time, box 10, which is fixedly connected to exhaust hood 5, and conduit 13 on box 10 also move upwards. However, bottom plate 16 is blocked by vertical plate 18 and cannot move upwards with conduit 13. Piston 14 is fixed on bottom plate 16 and remains stationary. Thus, bottom plate 16 stretches spring 17, putting spring 17 in a stretched state. Since piston 14 is slidably and sealed inside conduit 13, and conduit 13 is connected to the inside of airbag 11, on conduit 13... During the movement, the piston 14 moves downward relative to the conduit 13, drawing out some air from the airbag 11 and causing it to contract. As the airbag 11 contracts, it moves the abutment block 12, which is fixedly connected to one side of it. The abutment block 12 slides laterally within a sliding hole on the side of the exhaust hood 5, separating it from the filter plate 6. The top of the filter plate 6 contacts the activated carbon plate 7, and a counterweight plate 8 is fixedly installed on the top of the activated carbon plate 7. After the abutment block 12 separates from the filter plate 6, the filter plate 6, activated carbon plate 7, and counterweight plate 8 move downward due to their own weight, facilitating quick removal for maintenance. After maintenance, the hydraulic cylinder 2 is reversed, causing the exhaust hood 5 to move downward. At this time, the spring 17 returns to its original position, pushing the base plate 16 and piston 14 upward. Air re-enters the airbag 11, causing it to inflate. The abutment block 12 then abuts against the filter plate 6 again, limiting the movement of the filter plate 6 and activated carbon plate 7 to ensure their stability, and continuing to purify the extracted air.

[0044] The exhaust duct of a laboratory fume hood provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A laboratory fume hood exhaust duct, characterized in that, include: Laboratory fume hood mounting component (1), wherein the laboratory fume hood mounting component (1) is provided with an adjustment and maintenance mechanism; The adjustment and maintenance mechanism includes a hydraulic cylinder (2), a push plate (3), an exhaust pipe (4), an exhaust hood (5), a box (10), an airbag (11), a contact block (12), a guide tube (13), a piston (14), a base plate (16), and a vertical plate (18). The hydraulic cylinder (2) is fixedly installed at the bottom of the laboratory fume hood mounting component (1). The hydraulic rod of the hydraulic cylinder (2) is fixedly connected to the push plate (3). The exhaust pipe (4) is fixedly connected to the push plate (3). The exhaust hood (5) is fixedly connected to the exhaust pipe (4). The box body (10) is fixedly installed on the exhaust hood (5). The airbag (11) is fixedly installed on one side of the inner wall of the box body (10). The abutment block (12) is fixedly connected to one side of the airbag (11). The conduit (13) is fixedly connected to the airbag (11). The piston component (14) is slidably and sealed on the conduit (13). The bottom plate (16) is fixedly connected to the piston component (14). The vertical plate (18) is fixedly installed at the bottom of the laboratory fume hood mounting component (1).

2. The laboratory fume hood exhaust duct according to claim 1, characterized in that, The adjustment and maintenance mechanism also includes a filter plate (6), an activated carbon plate (7), a counterweight plate (8), a baffle (9), a sleeve plate (15), and a spring (17). The counterweight plate (8) is fixedly installed on the top of the activated carbon plate (7). The baffle (9) is fixedly installed on the inner wall of the exhaust hood (5). The bottom of the baffle (9) is in contact with the counterweight plate (8). The top of the filter plate (6) is in contact with the activated carbon plate (7). The top of the abutment block (12) is in contact with the filter plate (6). The sleeve plate (15) is fixedly sleeved on the outside of the guide tube (13). The spring (17) is fixedly installed between the bottom plate (16) and the sleeve plate (15).

3. The laboratory fume hood exhaust duct according to claim 1, characterized in that, The laboratory fume hood mounting component (1) has a movable hole at the top, and the exhaust pipe (4) is vertically slidably installed in the movable hole.

4. The laboratory fume hood exhaust duct according to claim 1, characterized in that, The conduit (13) is fixedly installed on the box (10) and is connected to the inside of the airbag (11).

5. The laboratory fume hood exhaust duct according to claim 1, characterized in that, The exhaust hood (5) has a sliding hole on its side, and the abutment block (12) is slidably installed in the sliding hole.

6. The laboratory fume hood exhaust duct according to claim 1, characterized in that, The bottom of the vertical plate (18) is in contact with the bottom plate (16).

7. The laboratory fume hood exhaust duct according to claim 1, characterized in that, A corrugated pipe (19) is fixedly installed at the top of the exhaust pipe (4).

8. The laboratory fume hood exhaust duct according to claim 2, characterized in that, Both the filter plate (6) and the activated carbon plate (7) are in contact with the inner walls of the exhaust hood (5).

Images