Experimental automatic sample introduction and sampling ventilation cabinet with dustproof function

Abstract

The utility model relates to the technical field of sampling fume cupboards, in particular to an experimental automatic sampling fume cupboard with a dustproof function, which comprises a cupboard body, support legs, a cavity, an air pipe, a filter screen, a worktable, a sample box and a sampling component, four supporting legs for supporting are fixedly connected to the lower end of the cabinet body, a cavity is formed in the upper side of the front end of the cabinet body, an air pipe with a built-in fan is installed at the upper end of the cabinet body, a filter screen for dust prevention is arranged at an air outlet of the air pipe, a workbench for an experiment is installed at the upper end of the cavity, and sample boxes for containing samples are installed on the left side and the right side of the upper end of the cavity. The sample box is located at the rear end of the workbench. The sampling assemblies are installed in the cavity and located on the left side and the right side of the workbench. Harmful gas and particles are efficiently discharged, the laboratory environment safety is guaranteed, dust is prevented from entering the fan and the cabinet body through the dustproof design, the transparent sliding door facilitates observation of internal conditions, and the burden of experimenters is relieved through the design of the automatic sampling assembly and the sample box.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling fume hoods, in particular to an automatic sampling fume hood for experiments with a dustproof function. Background Art

[0002] The function of laboratory fume hoods is to effectively remove harmful gases, vapors and dust generated during the experiment, ensure the air quality in the laboratory, and provide a safe and healthy working environment for experimenters. It helps prevent the accumulation of harmful substances in the laboratory, thereby protecting the health of experimenters and maintaining the overall safety of the laboratory.

[0003] However, although existing laboratory fume hoods can eliminate harmful gases generated during the experiment to a certain extent, they often lack effective protection against dust and automated sampling functions, which requires manual operation by staff. As the number of analyzed samples continues to increase, it will bring more workload to the experimenters.

[0004] Therefore, in view of the fact that the above-mentioned laboratory fume hoods still require manual operation by experimenters, thereby increasing the burden on experimenters, an automatic sampling fume hood with dust-proof function can be designed. Through the rotating structure and the telescopic structure, while protecting the fume hood from dust, the samples in the fume hood can be automatically sampled, thereby reducing the burden on experimenters. Utility Model Content

[0005] In order to overcome the problem that laboratory fume hoods still require manual operation by experimenters, thereby increasing the burden on experimenters.

[0006] The technical solution of the utility model is: an automatic sampling fume hood for experiments with a dust-proof function, comprising a cabinet body, legs, a cavity, an air duct, a filter, a workbench, a sample box and a sampling assembly; four legs for support are fixedly connected to the lower end of the cabinet body, a cavity is opened on the upper side of the front end of the cabinet body, an air duct with a built-in fan is installed on the upper end of the cabinet body, an air outlet of the air duct is provided with a dust-proof filter, a workbench for conducting experiments is installed on the upper end of the cavity, sample boxes for holding samples are installed on the left and right sides of the upper end of the cavity, the sample box is located at the rear end of the workbench, and the sampling assembly is installed in the cavity and is located on the left and right sides of the workbench.

[0007] Preferably, the cabinet body is the main structure of the entire fume hood, the legs are the supporting structure of the cabinet body, ensuring that the cabinet body is placed stably, the cavity is a space opened on the upper front side of the cabinet body, used to install a workbench, sample box and sampling components, etc. The air duct is the exhaust structure of the fume hood, with a built-in fan to generate negative pressure, sucking in and discharging harmful gases and particles generated during the experiment. At the same time, a filter is provided at the air outlet of the air duct to prevent dust and particles from entering the fan and the cabinet body. The workbench is used to place experimental instruments and perform experimental operations. The sample box is a container for holding experimental samples, and the sampling component is used to automatically grab samples from the sample box and place them on the workbench for experiments.

[0008] Preferably, an L-shaped bracket is fixedly connected to the left and right sides of the upper end of the cavity, and a motor is installed on the upper end of the L-shaped bracket. The L-shaped bracket is designed in an "L" shape to provide stable support in the vertical and horizontal directions. The function of the L-shaped bracket is to support and fix the motor. The motor is a power source installed on the upper end of the L-shaped bracket for providing rotational power.

[0009] Preferably, a rotating support seat is fixedly connected to the left and right sides of the upper end of the cavity, the rotating support seat is located on the inner side of the L-shaped bracket, the lower end of the rotating shaft is rotatably connected to the rotating support seat, the upper end of the rotating shaft is installed with a coupling and is connected to the output shaft of the motor through the coupling. The design of the rotating support seat ensures that the rotating shaft can rotate stably inside it. The rotating shaft is used to transmit rotational force, thereby driving the horizontal plate to rotate. The coupling is a component that connects the motor output shaft and the rotating shaft, thereby transmitting rotational power.

[0010] Preferably, the sampling assembly includes a horizontal plate, a hydraulic cylinder, a disc and a suction cup; the outer wall of the rotating shaft is fixedly connected to the horizontal plate, the hydraulic cylinder is installed in the horizontal plate, the lower end of the power output element of the hydraulic cylinder is installed with a disc, and the lower end of the disc is provided with a suction cup. The horizontal plate is a supporting structure fixedly connected to the outer wall of the rotating shaft and is used to install the hydraulic cylinder. The hydraulic cylinder is a power element installed in the horizontal plate and is used to provide vertical lifting power. The disc is the mounting structure at the lower end of the power output element of the hydraulic cylinder and is used to connect the suction cup. The suction cup is an adsorption element at the lower end of the disc and is used to adsorb and fix the sample.

[0011] Preferably, a sliding door compartment is opened at the upper end of the cavity, and a transparent sliding door is installed in the sliding door compartment. The sliding door compartment is a specific space opened at the upper end of the cavity, which is used to install and accommodate the transparent sliding door to ensure that the sliding door can be opened and closed smoothly. The sliding door is used to close or open the opening of the cavity. The sliding door is made of transparent material, such as tempered glass or transparent plastic, so that the situation inside the cavity can be clearly observed during the experiment.

[0012] Preferably, the outer walls at both ends of the sliding door are integrally fixed with convex rails, and the inner walls on the left and right sides of the cavity are provided with sliding grooves adapted to the convex rails. The sliding door is slidably connected to the sliding grooves through the convex rails, and the convex rails are used to cooperate with the sliding grooves on the inner walls of the cavity to realize the sliding connection of the sliding door, thereby ensuring the stability and smoothness of the sliding door during the sliding process.

[0013] Preferably, the air inlet of the air duct is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the air outlet of the four-way pipe. An absorption bin is installed on the inner wall of the rear end of the cavity, and the air inlet in the four-way pipe is connected to the air outlet of the absorption bin. The air inlet of the absorption bin is installed with an absorption hood. The air duct is responsible for discharging harmful gases and particles generated during the experiment out of the laboratory. A fan is equipped inside the air duct to generate negative pressure, attract and discharge harmful gases. The connecting pipe acts as a bridge to guide the gas from the four-way pipe to the air duct. The four-way pipe is a pipe connector with four ports. Its structure allows the gas to be distributed or converged in different directions. The absorption bin is used to absorb harmful gases entering the fume hood, and the air inlet of the absorption bin is installed with an absorption hood to expand the gas collection range.

[0014] Beneficial effects of the utility model:

[0015] 1. The automatic sampling fume hood used in this experiment can not only effectively exhaust the harmful gases and particles generated during the experiment, ensuring the cleanliness and safety of the laboratory environment, but also prevent dust and particles from entering the fan and cabinet through its dust-proof function. At the same time, its transparent sliding door design allows the experimenter to clearly observe the situation inside the cavity, improving the convenience and efficiency of the experiment. In addition, the setting of the automated sampling component and sample box reduces the operating burden of the experimenter;

[0016] 2. The convex rail is used to cooperate with the sliding groove on the inner wall of the cavity to realize the sliding connection of the sliding door, thereby ensuring the stability and smoothness of the sliding door during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the first three-dimensional structure of the automatic sampling fume hood for experiments with dust-proof function of the present invention;

[0018] Figure 2 Shown is a schematic diagram of the second three-dimensional structure of the automatic sampling fume hood for experiments with dust-proof function of the present invention;

[0019] Figure 3 Shown is a schematic diagram of the third three-dimensional structure of the automatic sampling fume hood for experiments with dust-proof function of the present invention;

[0020] Figure 4 Shown is a front view schematic diagram of an automatic sampling fume hood for experiments with dustproof function according to the present invention;

[0021] Figure 5 Shown is a top view of an automatic sampling fume hood for use in an experiment with a dustproof function according to the present invention;

[0022] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the sampling component of the automatic sampling fume hood for experiments with dust-proof function of the present invention.

[0023] Explanation of the accompanying symbols: 1. Cabinet; 2. Support leg; 3. Cavity; 4. Air duct; 5. Filter; 6. Workbench; 7. Sample box; 8. L-shaped bracket; 9. Motor; 10. Rotating support seat; 11. Rotating shaft; 12. Coupling; 13. Cross plate; 14. Hydraulic cylinder; 15. Disc; 16. Suction cup; 17. Sliding door bin; 18. Sliding door; 19. Convex rail; 20. Slide groove; 21. Connecting pipe; 22. Four-way pipe; 23. Absorption bin; 24. Absorption hood. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figures 1-6The utility model provides an embodiment: an automatic sampling fume hood for experiments with a dust-proof function, comprising a cabinet body 1, legs 2, a cavity 3, an air duct 4, a filter 5, a workbench 6, a sample box 7 and a sampling assembly; the lower end of the cabinet body 1 is fixedly connected to four legs 2 for support, a cavity 3 is opened on the upper side of the front end of the cabinet body 1, an air duct 4 with a built-in fan is installed on the upper end of the cabinet body 1, and an air outlet of the air duct 4 is provided with a filter 5 for dust prevention, a workbench 6 for conducting experiments is installed on the upper end of the cavity 3, and two containers are installed on the left and right sides of the upper end of the cavity 3. The sample box 7 for placing samples is located at the rear end of the workbench 6. The sampling components are installed in the cavity 3 and are located on the left and right sides of the workbench 6. The cabinet 1 is the main structure of the entire fume hood. The legs 2 are the supporting structure of the cabinet 1 to ensure that the cabinet 1 is placed stably. The cavity 3 is a space opened on the upper front side of the cabinet 1 for installing the workbench 6, the sample box 7 and the sampling components. The air duct 4 is the exhaust structure of the fume hood. The built-in fan generates negative pressure to inhale and discharge the harmful gases and particles generated during the experiment. At the same time, the air outlet of the air duct 4 is provided with a The filter 5 is used to prevent dust and particles from entering the fan and the cabinet 1. The workbench 6 is used to place experimental instruments and perform experimental operations. The sample box 7 is a container for holding experimental samples. The sampling component is used to automatically grab samples from the sample box 7 and place them on the workbench 6 for experiments. The air inlet of the air duct 4 is connected to one end of the connecting pipe 21, and the other end of the connecting pipe 21 is connected to the air outlet of the four-way pipe 22. The rear end inner wall of the cavity 3 is installed with an absorption bin 23, and the air inlet in the four-way pipe 22 is connected to the air outlet of the absorption bin 23. The air inlet of the absorption bin 23 is installed There is an absorption hood 24, and the air duct 4 is responsible for discharging the harmful gases and particles generated during the experiment out of the laboratory. The air duct 4 is equipped with a fan to generate negative pressure, attract and discharge harmful gases. The connecting pipe 21 acts as a bridge, guiding the gas from the four-way pipe 22 to the air duct 4. The four-way pipe 22 is a pipe connector with four ports. Its structure allows the gas to be distributed or converged in different directions. The absorption bin 23 is used to absorb the harmful gases entering the fume hood, and the air inlet of the absorption bin 23 is installed with an absorption hood 24 to expand the gas collection range.

[0026] See also Figure 6, in this embodiment, the left and right sides of the upper end of the cavity 3 are fixedly connected with L-shaped brackets 8, the upper end of the L-shaped bracket 8 is installed with a motor 9, the left and right sides of the upper end of the cavity 3 are fixedly connected with a rotating support seat 10, the rotating support seat 10 is located on the inner side of the L-shaped bracket 8, the lower end of the rotating shaft 11 is rotatably connected to the rotating support seat 10, the upper end of the rotating shaft 11 is installed with a coupling 12 and is connected to the output shaft of the motor 9 through the coupling 12, the sampling assembly includes a horizontal plate 13, a hydraulic cylinder 14, a disc 15 and a suction cup 16; the outer wall of the rotating shaft 11 is fixedly connected with a horizontal plate 13, a hydraulic cylinder 14 is installed in the horizontal plate 13, the lower end of the power output element of the hydraulic cylinder 14 is installed with a disc 15, and the lower end of the disc 15 is provided with a suction cup 16, the L-shaped bracket 8 is designed in an "L" shape, so as to provide a plurality of To provide stable support, the L-shaped bracket 8 is used to support and fix the motor 9. The motor 9 is a power source installed at the upper end of the L-shaped bracket 8 and is used to provide rotational power. The design of the rotating support seat 10 ensures that the rotating shaft 11 can rotate stably inside it. The rotating shaft 11 is used to transmit rotational force, thereby driving the cross plate 13 to rotate. The coupling 12 is a component connecting the output shaft of the motor 9 and the rotating shaft 11, thereby transmitting rotational power. The cross plate 13 is a supporting structure fixedly connected to the outer wall of the rotating shaft 11, which is used to install the hydraulic cylinder 14. The hydraulic cylinder 14 is a power element installed in the cross plate 13, which is used to provide vertical lifting power. The disc 15 is the mounting structure at the lower end of the power output element of the hydraulic cylinder 14, which is used to connect the suction cup 16. The suction cup 16 is an adsorption element at the lower end of the disc 15, which is used to adsorb and fix the sample.

[0027] See also Figure 3 In this embodiment, a sliding door bin 17 is provided at the upper end of the cavity 3, and a transparent sliding door 18 is installed in the sliding door bin 17. The left and right outer walls of the sliding door 18 are integrally fixedly connected with convex rails 19, and the left and right inner walls of the cavity 3 are provided with sliding grooves 20 adapted to the convex rails 19. The sliding door 18 is slidably connected to the sliding grooves 20 through the convex rails 19. The sliding door bin 17 is a specific space opened at the upper end of the cavity 3 for installing and accommodating the transparent sliding door 18, ensuring that the sliding door 18 can be opened and closed smoothly. The sliding door 18 is used to close or open the opening of the cavity 3. The sliding door 18 is made of transparent material, such as tempered glass or transparent plastic, so that the situation inside the cavity 3 can be clearly observed during the experiment. The convex rails 19 are used to cooperate with the sliding grooves 20 on the inner walls of the cavity 3 to realize the sliding connection of the sliding door 18, thereby ensuring the stability and smoothness of the sliding door 18 during the sliding process.

[0028] When starting work, the staff first starts the fan to ensure that the absorption cover 24 in the fume hood can continuously absorb the gas in the hood;

[0029] Then, the sliding door 18 is pulled upwards and the rotary motor is activated, which drives the horizontal plate 13 to rotate through the rotating shaft 11. When the horizontal plate 13 rotates to the top of the sample box 7, the hydraulic cylinder 14 is activated, driving the disc 15 to descend, so that the suction cup 16 can absorb the sample;

[0030] Next, the rotary motor is activated again to rotate the transverse plate 13 to above the workbench 6 , and then the hydraulic cylinder 14 is activated again, the disc 15 descends, and the suction cup 16 places the sample on the workbench 6 .

[0031] Through the above steps, the automatic sampling fume hood used in this experiment can not only effectively discharge the harmful gases and particles generated during the experiment, ensuring the cleanliness and safety of the laboratory environment, but also prevent dust and particles from entering the fan and cabinet 1 through its dustproof function. At the same time, its transparent sliding door 18 design enables the experimenter to clearly observe the situation inside the cavity 3, thereby improving the convenience and efficiency of the experiment. In addition, the setting of the automated sampling component and the sample box 7 reduces the operating burden of the experimenter, and solves the problem that the laboratory fume hood still requires manual operation by the experimenter, thereby increasing the burden on the experimenter.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An automatic sampling fume hood for use in experiments with a dustproof function, comprising a cabinet body (1), legs (2), a cavity (3), an air duct (4) and a filter (5); characterized in that: The cabinet (1) further comprises a workbench (6), a sample box (7) and a sampling assembly; the lower end of the cabinet (1) is fixedly connected with four supporting legs (2); a cavity (3) is provided on the upper side of the front end of the cabinet (1); an air duct (4) with a built-in fan is installed on the upper end of the cabinet (1); a filter (5) for preventing dust is provided at the air outlet of the air duct (4); a workbench (6) for conducting experiments is installed on the upper end of the cavity (3); sample boxes (7) for holding samples are installed on the left and right sides of the upper end of the cavity (3); the sample boxes (7) are located at the rear end of the workbench (6); and the sampling assembly is installed in the cavity (3) and located on the left and right sides of the workbench (6).

2. The automatic sampling fume hood for experiments with dustproof function according to claim 1, characterized in that: L-shaped brackets (8) are fixedly connected to the left and right sides of the upper end of the cavity (3), and a motor (9) is installed at the upper end of the L-shaped bracket (8).

3. The automatic sampling fume hood for experiments with dustproof function according to claim 2, characterized in that: The left and right sides of the upper end of the cavity (3) are fixedly connected with a rotating support seat (10), the rotating support seat (10) is located on the inner side of the L-shaped bracket (8), the lower end of the rotating shaft (11) is rotatably connected to the rotating support seat (10), and the upper end of the rotating shaft (11) is installed with a coupling (12) and is connected to the output shaft of the motor (9) through the coupling (12).

4. The automatic sampling fume hood for experiments with dustproof function according to claim 3, characterized in that: The sampling assembly comprises a transverse plate (13), a hydraulic cylinder (14), a disc (15) and a suction cup (16); the outer wall of the rotating shaft (11) is fixedly connected with the transverse plate (13), the hydraulic cylinder (14) is installed in the transverse plate (13), the lower end of the power output element of the hydraulic cylinder (14) is installed with the disc (15), and the lower end of the disc (15) is provided with a suction cup (16).

5. The automatic sampling fume hood for experiments with dustproof function according to claim 4, characterized in that: A sliding door compartment (17) is provided at the upper end of the cavity (3), and a transparent sliding door (18) is installed in the sliding door compartment (17).

6. The automatic sampling fume hood for experiments with dustproof function according to claim 5, characterized in that: The left and right outer walls of the sliding door (18) are integrally fixedly connected with convex rails (19), and the left and right inner walls of the cavity (3) are provided with sliding grooves (20) adapted to the convex rails (19), and the sliding door (18) is slidably connected in the sliding grooves (20) through the convex rails (19).

7. The automatic sampling fume hood for experiments with dustproof function according to claim 6, characterized in that: The air inlet of the air duct (4) is connected to one end of the connecting pipe (21), and the other end of the connecting pipe (21) is connected to the air outlet of the four-way pipe (22). An absorption chamber (23) is installed on the rear end inner wall of the cavity (3), and the air inlet in the four-way pipe (22) is connected to the air outlet of the absorption chamber (23). An absorption cover (24) is installed on the air inlet of the absorption chamber (23).

Images