Safe ventilation experiment table for laboratory

Abstract

The utility model discloses a safe ventilation experiment table for a laboratory, which comprises a base station, a combined cabinet body is fixedly mounted at the bottom of the base station, a bracket is fixedly connected to the top of the base station, an inclined block is mounted on the bracket, a vertical pipe perpendicular to the inclined block is slidably connected to the inside of the inclined block, and a ventilation hole is formed in the vertical pipe. The bottom end of the vertical pipe is fixedly connected with an adsorption cover, and an air exhaust mechanism is fixedly installed on the right side of the support. The vertical pipe at the top of the adsorption cover is manually pushed to vertically slide along the inclined block, and the resistance part is matched with the raised grains on the vertical plate, so that the vertical pipe realizes stepless adjustment and positioning, can vertically move under external acting force, keeps stable when being not stressed, is more flexible in adjustment operation, can be operated and adjusted at any time, and is convenient to use. Therefore, the device has the advantages that flexible and efficient height adjustment of the adsorption structure is achieved, operation is convenient and labor-saving, and operation flexibility is high.

Description

Technical Field

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

[0002] Laboratory-specific ventilated workbenches, as an essential component of modern laboratory equipment, undertake experimental tasks involving various toxic or corrosive chemical gases. They adsorb and centrally discharge toxic and harmful gases generated during experiments, preventing harm to experimenters.

[0003] The height of the adsorption structure in the current ventilation test bench needs to be adjusted according to the test type to ensure the adsorption effect. However, the current height adjustment operation of the adsorption structure is relatively cumbersome. It requires contact positioning first, then vertical movement of the height and then positioning operation, which is inefficient and not flexible enough. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a safe ventilation experimental table for laboratory use.

[0005] To solve the aforementioned technical problems, the present invention adopts the following technical solution.

[0006] A laboratory safety ventilation bench includes a base, a combined cabinet fixedly installed at the bottom of the base, a support fixedly connected to the top of the base, an inclined block installed on the support, a vertical tube slidably connected to the inclined block, an adsorption hood fixedly connected to the bottom end of the vertical tube, an exhaust mechanism fixedly installed on the right side of the support, the exhaust mechanism communicating and cooperating with the vertical tube, a purification box fixedly installed on the base, a diagonal support fixedly connected to the bottom of the inclined block, a resistance element fixedly connected to the bottom end of the diagonal support, a vertical plate fixedly connected to the outside of the vertical tube, and a corrugated pattern on one side of the vertical plate cooperating with the resistance element.

[0007] As a further description of the above technical solution: the resistance component includes a clamping block and an elastic component. The inner side of the clamping block is slidably connected to the outer side of the vertical plate, and the elastic component is movably installed to one side of the clamping block and contacts and cooperates with the vertical plate.

[0008] As a further description of the above technical solution: the elastic component includes a sliding rod, a spring and a ball. One end of the sliding rod extends into the interior of the clamping block, and the end of the sliding rod is rotatably connected to the ball. The outer side of the ball rolls in contact with the corrugated pattern. The spring is sleeved on the outer side of the sliding rod, and one end of the spring is fixedly connected to the sliding rod. The other end of the spring is fixedly connected to the outer side of the clamping block.

[0009] As a further description of the above technical solution: the air extraction mechanism includes an axial flow fan, a hose and a vertical duct. The outer side of the axial flow fan is fixedly installed to the outer side of the bracket. The input end of the axial flow fan is fixedly connected to the top end of the vertical duct through the hose. The output end of the axial flow fan is fixedly connected to the vertical duct. The bottom end of the vertical duct is inserted into the interior of the purification box.

[0010] As a further description of the above technical solution: the side view of the adsorption cover is a long rectangle, and a handle is fixedly connected to the left side of the adsorption cover.

[0011] As a further description of the above technical solution: a drain valve is fixedly connected to the right side of the purification box, and the purification box is connected to an external exhaust pipe.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] This solution achieves stepless positioning of the vertical tube by using a resistance component in conjunction with the corrugated pattern on the vertical plate. This enables the device to have the advantages of flexible and efficient height adjustment of the adsorption structure, convenient and labor-saving operation, and high operational flexibility. Attached Figure Description

[0014] Figure 1 This is a frontal cross-sectional view of the present invention.

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of section A in the middle;

[0016] Figure 3 This is a partial side view of the structure of this utility model;

[0017] Figure 4 for Figure 3 Enlarged schematic diagram of section B in the middle.

[0018] Explanation of the labels in the diagram:

[0019] 1. Base; 2. Combined cabinet; 3. Support; 4. Inclined block; 5. Vertical pipe; 6. Adsorption hood; 61. Handle; 7. Exhaust mechanism; 71. Axial flow fan; 72. Flexible hose; 73. Vertical duct; 8. Purification box; 81. Drain valve; 9. Diagonal brace; 10. Resistance component; 101. Clamping block; 102. Elastic component; 1021. Sliding rod; 1022. Spring; 1023. Ball bearing; 11. Vertical plate; 12. Wavy texture. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figures 1-4In this utility model, a laboratory safety ventilation experimental bench includes a base 1, a combined cabinet 2 fixedly installed at the bottom of the base 1, a support 3 fixedly connected to the top of the base 1, an inclined block 4 installed on the support 3, a vertical pipe 5 slidably connected to the inclined block 4, an adsorption cover 6 fixedly connected to the bottom of the vertical pipe 5, an exhaust mechanism 7 fixedly installed on the right side of the support 3, the exhaust mechanism 7 communicating and cooperating with the vertical pipe 5, a purification box 8 fixedly installed on the base 1, a diagonal support 9 fixedly connected to the bottom of the inclined block 4, a resistance element 10 fixedly connected to the bottom of the diagonal support 9, a vertical plate 11 fixedly connected to the outside of the vertical pipe 5, a corrugated pattern 12 on one side of the vertical plate 11, the corrugated pattern 12 cooperating with the resistance element 10.

[0022] In this invention, the base 1 serves as the experimental platform, and the combined cabinet 2 at the bottom facilitates the storage and retrieval of items. The bracket 3 supports the suction mechanism 7 and the adsorption hood 6. During use, experiments are conducted on the base 1. Depending on the type of experiment, the vertical tube 5 at the top of the adsorption hood 6 can be manually pushed to slide vertically along the inclined block 4. The resistance component 10, in conjunction with the corrugated pattern 12 on the vertical plate 11, allows the vertical tube 5 to achieve stepless adjustment and positioning. It can move vertically under external force while remaining stable when no force is applied, making the adjustment operation more flexible. It can be operated and adjusted at any time, thus enabling the device to achieve flexible and efficient height adjustment of the adsorption structure. It is convenient, labor-saving, and highly flexible in operation, solving the problem that the height adjustment operation of the adsorption structure in the prior art is cumbersome, requiring contact positioning first, then vertical movement of the height before positioning, resulting in low operating efficiency and insufficient flexibility.

[0023] Please see Figure 2 and Figure 4 The resistance member 10 includes a clamping block 101 and an elastic member 102. The inner side of the clamping block 101 is slidably connected to the outer side of the vertical plate 11, and the elastic member 102 is movably installed to one side of the clamping block 101 and contacts and engages with the vertical plate 11.

[0024] In this utility model, the clamping block 101 is supported by the diagonal brace 9, and the vertical plate 11 slides along the inside of the clamping block 101. When the vertical tube 5 is pushed to move vertically, the vertical plate 11 slides along the inside of the clamping block 101, and the elastic element 102, in conjunction with the wave pattern 12, generates resistance to the vertical plate 11. During adjustment, it is only necessary to overcome the resistance to operate. When the vertical tube 5 is stationary, the resistance provided by the elastic element 102 keeps it stable and prevents it from sliding down.

[0025] Please see Figure 2 and Figure 4The elastic element 102 includes a sliding rod 1021, a spring 1022, and a ball 1023. One end of the sliding rod 1021 extends into the interior of the clamping block 101. The end of the sliding rod 1021 is rotatably connected to the ball 1023. The outer side of the ball 1023 rolls and fits with the corrugated pattern 12. The spring 1022 is sleeved on the outer side of the sliding rod 1021. One end of the spring 1022 is fixedly connected to the sliding rod 1021, and the other end of the spring 1022 is fixedly connected to the outer side of the clamping block 101.

[0026] In this invention, the spring 1022 on the sliding rod 1021 generates elastic force, which pushes the ball 1023. The ball 1023 exerts pressure on the surface of the corrugated 12. When the vertical plate 11 moves, the ball 1023 rolls along the surface of the corrugated 12, providing positioning resistance.

[0027] Please see Figure 1 The exhaust mechanism 7 includes an axial flow fan 71, a hose 72, and a vertical duct 73. The outer side of the axial flow fan 71 is fixedly installed to the outer side of the bracket 3. The input end of the axial flow fan 71 is fixedly connected to the top of the vertical duct 5 through the hose 72. The output end of the axial flow fan 71 is fixedly connected to the vertical duct 73. The bottom end of the vertical duct 73 is inserted into the interior of the purification box 8.

[0028] In this invention, the axial flow fan 71 is activated to draw the inside of the adsorption hood 6 and the vertical pipe 5 into negative pressure through the hose 72. Then, the adsorption hood 6 absorbs the harmful gas generated by the experiment on the base 1 below. The harmful gas is then introduced into the purification box 8 through the vertical pipe 73, and a purification liquid is injected into the box to absorb and react with the harmful gas, so as to achieve purification before discharge and avoid pollution.

[0029] Please see Figure 1 and Figure 3 The side view of the adsorption hood 6 is a long rectangle, and a handle 61 is fixedly connected to the left side of the adsorption hood 6.

[0030] In this invention, the adsorption coverage area is increased by the long rectangular adsorption cover 6, which enhances the adsorption effect, and the handle 61 is used to facilitate vertical movement and adjustment.

[0031] Please see Figure 1 The purification box 8 is fixedly connected to the right side of the drain valve 81, and the purification box 8 is connected to the external exhaust pipe.

[0032] In this invention, the waste liquid reacting inside the purification tank 8 can be conveniently discharged through the drain valve 81, and new purification liquid can be easily added, making operation convenient.

[0033] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A safety fume hood for laboratory use, comprising a base (1), characterised in that: The bottom of the base (1) is fixedly installed with a combined cabinet body (2), the top of the base (1) is fixedly connected with a support (3), the support (3) is installed with an inclined block (4), the inside of the inclined block (4) is slidably connected with a vertical pipe (5) perpendicular to the inclined block (4), the bottom end of the vertical pipe (5) is fixedly connected with a suction cover (6), the right side of the support (3) is fixedly installed with an air extraction mechanism (7), the air extraction mechanism (7) is in communication with the vertical pipe (5), the base (1) is fixedly installed with a purification tank (8), the bottom of the inclined block (4) is fixedly connected with a diagonal support frame (9), the bottom end of the diagonal support frame (9) is fixedly connected with a resistance piece (10), the outside of the vertical pipe (5) is fixedly connected with a vertical plate (11), one side of the vertical plate (11) is provided with a wave pattern (12), and the wave pattern (12) is matched with the resistance piece (10).

2. A safety fume hood for laboratory use according to claim 1, characterized in that: The resistance piece (10) comprises a clamping block (101) and an elastic piece (102), the inside of the clamping block (101) is slidably connected to the outside of the vertical plate (11), and the elastic piece (102) is movably installed on one side of the clamping block (101) and in contact with the vertical plate (11).

3. A fume hood for laboratory use according to claim 2, characterized in that: The elastic piece (102) comprises a sliding rod (1021), a spring (1022) and a ball (1023), one end of the sliding rod (1021) penetrates into the inside of the clamping block (101), the end of the sliding rod (1021) is rotatably connected with the ball (1023), the outside of the ball (1023) is in rolling engagement with the wave pattern (12), the spring (1022) is sleeved on the outside of the sliding rod (1021), one end of the spring (1022) is fixedly connected with the sliding rod (1021), and the other end of the spring (1022) is fixedly connected with the outside of the clamping block (101).

4. The safety fume hood for laboratory experiments according to claim 1, characterized in that: The air extraction mechanism (7) comprises an axial flow fan (71), a hose (72) and a vertical guide pipe (73), the outside of the axial flow fan (71) is fixedly installed to the outside of the support (3), the input end of the axial flow fan (71) is fixedly connected with the top end of the vertical pipe (5) through the hose (72), the output end of the axial flow fan (71) is fixedly connected with the vertical guide pipe (73), and the bottom end of the vertical guide pipe (73) is inserted into the inside of the purification tank (8).

5. The safety fume hood for laboratory experiments as claimed in claim 1 wherein: The side view of the suction cover (6) is in the shape of a long rectangle, and the left side of the suction cover (6) is fixedly connected with a handle (61).

6. A safety fume hood laboratory bench according to claim 1, wherein: The right side of the purification tank (8) is fixedly connected with a liquid discharge valve (81), and the purification tank (8) is in communication with an external exhaust pipeline. The right side of the purification tank (8) is fixedly connected with a liquid discharge valve (81), and the purification tank (8) is in communication with an external exhaust pipeline.

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