Laboratory exhaust device

Abstract

This utility model discloses a laboratory exhaust gas device, comprising a purification frame and an exhaust fan. A purification sponge is placed in a slot within the purification frame. A side chamber is located on the top side of the purification frame, and a circular groove is formed on the outer surface of the side chamber. A movable pipe is installed within the side chamber, passing through the circular groove on the outer surface of the side chamber. A toothed rod is fixedly connected to the side of the movable pipe away from the purification frame. A liquid storage frame and a water pump are fixedly connected to the upper surface of the purification frame. The liquid storage frame and the water pump are connected via a water pipe. The water pump communicates with the interior of the movable pipe via a flexible water pipe. A sprayer is installed at the top of the movable pipe inside the purification frame. This structure allows for targeted treatment of different types of pollutants generated in the laboratory, enabling a single device to purify and discharge different pollutants, thus preventing laboratory gases from polluting the atmospheric environment.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, specifically to a laboratory exhaust gas device. Background Technology

[0002] The primary function of ventilation systems is to remove harmful gases generated during experiments and protect the health of laboratory personnel. Experiments are frequently conducted in research facilities such as hospitals, schools, and various research institutes. In laboratories, the use of various chemical substances often causes air pollution, some of which not only have unpleasant odors but are also harmful to health.

[0003] Directly releasing laboratory gases into the outside air will cause air pollution. Different experiments in the laboratory may produce different harmful pollutants, and a single gas treatment device cannot treat these different harmful gases. Summary of the Invention

[0004] This utility model provides a laboratory exhaust gas device that can treat different types of polluting gases generated in the laboratory in a targeted manner, thereby enabling a single device to purify and discharge different polluting gases, thus avoiding pollution of the atmospheric environment by gases inside the laboratory.

[0005] To achieve the above objectives, a laboratory exhaust gas device is provided, comprising a purification frame and an exhaust fan. The lower inner surface of the purification frame has a placement groove containing a purification sponge. A side chamber is located on the top side of the purification frame, with a circular groove on its outer surface. A movable tube is installed within the side chamber, passing through the circular groove on the outer surface of the side chamber. A toothed rod is fixedly connected to the movable tube on the side away from the purification frame. A liquid storage frame and a water pump are fixedly connected to the upper surface of the purification frame. The liquid storage frame and the water pump are connected via a water pipe. The water pump communicates with the movable tube via a flexible water pipe. A sprayer is installed at the top of the movable tube inside the purification frame. The exhaust fan is installed to facilitate the extraction of gases from the laboratory into the purification frame, thereby purifying and discharging harmful gases. The side chamber is installed to accommodate the sprayer when replacing the purification sponge, avoiding obstruction of the sponge replacement process. The moving pipe is installed to facilitate the transfer of reaction solutions and to move the sprayer during its own movement. The water pump is installed to facilitate the pumping of liquid from the storage frame into the moving pipe. The sprayer is installed to facilitate the spraying of purification solutions onto the purification sponge.

[0006] According to the aforementioned laboratory exhaust gas device, a travel shaft is fixedly connected to the outer surface of the side chamber, the travel shaft passes through a toothed rod, and the bottom of the toothed rod is provided with tooth grooves. The travel shaft is provided to facilitate limiting the movement trajectory of the toothed rod.

[0007] According to the aforementioned laboratory exhaust gas device, a support rod is fixedly connected to the side surface of the upper chamber of the purification frame, and a servo motor is fixedly connected to the upper surface of the support rod. The servo motor is used to facilitate the control of gear rotation, thereby controlling the movement of the rack, and ultimately controlling the movement of the moving pipe and sprayer.

[0008] According to the aforementioned laboratory exhaust gas device, a gear is fixedly connected to the output end of the servo motor, and the gear meshes with the tooth grooves of the rack.

[0009] According to the aforementioned laboratory exhaust gas device, a limiting component is provided on the inner side surface of the purification frame. The limiting component includes a fixed shaft, a spring, and a limiting plate. The fixed shaft is fixedly connected to the inner side surface of the purification frame, and the limiting plate is slidably connected to the cylindrical surface of the fixed shaft. The limiting component is provided to conveniently restrict the vertical position of the purification sponge and prevent it from being blown away by the airflow output by the exhaust fan.

[0010] According to the aforementioned laboratory exhaust gas device, the spring is wrapped around the cylindrical surface of a fixed shaft, and the two ends of the spring are respectively fixedly connected to the inner side surface of the purification frame and the side surface of the limiting plate.

[0011] According to the aforementioned laboratory exhaust gas device, the top of the purification frame is provided with a top cover, and the top cover is provided with an air outlet. The air outlet is provided to facilitate the discharge of purified air.

[0012] According to the aforementioned laboratory exhaust gas device, the exhaust fan output end is connected to the bottom of the placement slot of the purification frame through a pipe, the exhaust fan input end is connected to the interior of the laboratory through a pipe, and a sealing ring is fixedly connected in the circular groove on the outer side surface of the side chamber, with the inner cylindrical surface of the sealing ring in close contact with the surface of the moving pipe.

[0013] The beneficial effects of this utility model are: by setting up a purification frame, a liquid storage frame, a water pump, a moving pipe, and a sprayer, it is possible to treat different types of polluting gases generated in the laboratory in a targeted manner, thereby enabling a single device to purify different polluting gases before emission, thus avoiding pollution of the atmospheric environment by gases inside the laboratory.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a laboratory exhaust ventilation device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the purification frame of a laboratory exhaust ventilation device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the purification frame of a laboratory exhaust ventilation device according to the present invention, viewed from above.

[0019] Figure 4 This is a schematic diagram of the installation position of the purification sponge in a laboratory exhaust gas device according to the present invention;

[0020] Figure 5 This is a cross-sectional view of the installation position of the movable pipe of a laboratory exhaust gas device according to the present invention.

[0021] Figure 6 This is a magnified view of part A of the exhaust gas device for laboratory use according to this utility model;

[0022] Figure 7 This is a magnified view of part B of the exhaust gas device for laboratory use according to this utility model.

[0023] Legend:

[0024] 1. Purification frame; 101. Side chamber; 2. Exhaust fan; 3. Top cover; 4. Air outlet; 5. Liquid storage frame; 6. Water pump; 7. Support rod; 8. Limiting assembly; 801. Fixed shaft; 802. Spring; 803. Limiting plate; 9. Moving tube; 10. Gear rack; 11. Stroke shaft; 12. Servo motor; 13. Gear; 14. Purification sponge; 15. Sprayer; 16. Sealing ring. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figures 1 to 7This utility model discloses a laboratory exhaust gas device, comprising a purification frame 1 and an exhaust fan 2. The lower inner surface of the purification frame 1 has a placement groove containing a purification sponge 14. A side chamber 101 is located on the top side of the purification frame 1, with a circular groove on its outer surface. A moving pipe 9 is installed within the side chamber 101, passing through the circular groove on its outer surface. A toothed rod 10 is fixedly connected to the side of the moving pipe 9 away from the purification frame 1. A liquid storage frame 5 and a water pump 6 are fixedly connected to the upper surface of the purification frame 1, connected by a water pipe. The water pump 6 communicates with the moving pipe 9 internally via a flexible water pipe. A sprayer 15 is installed at the top of the moving pipe 9 inside the purification frame 1. A top cover 3 is located at the top of the purification frame 1, with an air outlet 4 on it. The top cover 3 is connected to the purification frame 1 by screws. Under normal conditions, the sprayer 15 is positioned directly above the purification sponge 14, and the liquid storage box 5 contains purification solution. The type of purification solution is determined based on the type of polluting gas generated in the laboratory at that time.

[0027] A stroke shaft 11 is fixedly connected to the outer side surface of the side chamber 101. The stroke shaft 11 passes through the rack 10, and the rack 10 has a tooth groove at its bottom.

[0028] A support rod 7 is fixedly connected to the side surface of the upper chamber 101 of the purification frame 1. A servo motor 12 is fixedly connected to the upper surface of the support rod 7. A gear 13 is fixedly connected to the output end of the servo motor 12. The gear 13 meshes with the tooth groove of the rack 10.

[0029] The output end of the vacuum pump 2 is connected to the bottom of the placement slot of the purification frame 1 through a pipe, and the input end of the vacuum pump 2 is connected to the interior of the laboratory through a pipe. A sealing ring 16 is fixedly connected in the circular groove on the outer side surface of the side chamber 101, and the inner cylindrical surface of the sealing ring 16 is in close contact with the surface of the moving tube 9.

[0030] A limiting component 8 is provided on the inner side surface of the purification frame 1. The limiting component 8 includes a fixed shaft 801, a spring 802, and a limiting plate 803. The fixed shaft 801 is fixedly connected to the inner side surface of the purification frame 1, and the limiting plate 803 is slidably connected to the cylindrical surface of the fixed shaft 801. The spring 802 surrounds the cylindrical surface of the fixed shaft 801, and its two ends are fixedly connected to the inner side surface of the purification frame 1 and the side surface of the limiting plate 803, respectively. Under normal conditions, the limiting plate 803 is just above the purification sponge 14 and in slight contact with it. When gas rushes into the bottom of the purification sponge 14, the limiting plate 803 will restrict the upward movement of the purification sponge 14.

[0031] If there are multiple polluting gases in the laboratory, multiple laboratory exhaust gas devices can be combined together. Except for the input end of the exhaust fan 2 of the first laboratory exhaust gas device which is connected to the inside of the laboratory, the input end of the exhaust fan 2 of the other laboratory exhaust gas devices is connected to the air outlet 4 of the previous laboratory exhaust gas device.

[0032] Working Principle: During use, a suitable purification solution is selected based on the type of polluting gas generated in the laboratory and placed in the storage container 5. The purification solution is then pumped into the moving pipe 9 by the water pump 6 and sprayed from the sprayer 15 onto the purification sponge 14 below, where it is absorbed. The exhaust fan 2 then extracts the gas from the laboratory, allowing it to flow upwards through the bottom of the purification sponge 14. During this process, harmful gases in the gas react with the purification solution in the purification sponge 14, thus being purified. The purified gas then escapes from the outlet 4. When the purification sponge 14 needs to be replaced, the top cover 3 is opened, and the sprayer 15 is moved to the side chamber 101 by the servo motor 12. The limiting plate 803 is then moved outwards to remove the old purification sponge 14 and replace it with a new one. The limiting plate 803 is then released, the sprayer 15 is moved back to its original position by the servo motor 12, and the top cover 3 is reinstalled.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A laboratory exhaust gas device, characterized in that, The purification frame (1) and the vacuum pump (2) are included. The lower surface of the inner side of the purification frame (1) is provided with a placement groove. The placement groove of the purification frame (1) is provided with a purification sponge (14). The side of the top of the purification frame (1) is provided with a side chamber (101). The outer side surface of the side chamber (101) is provided with a circular groove. The side chamber (101) is provided with a moving tube (9). The moving tube (9) passes through the circular groove on the outer side surface of the side chamber (101). The moving tube (9) is fixedly connected to a toothed rod (10) on the side away from the purification frame (1). The upper surface of the purification frame (1) is fixedly connected with a liquid storage frame (5) and a water pump (6). The liquid storage frame (5) and the water pump (6) are connected by a water pipe. The water pump (6) is connected to the moving tube (9) through a flexible water pipe. The moving tube (9) is equipped with a sprayer (15) at the top of the inner side of the purification frame (1).

2. The laboratory exhaust gas device according to claim 1, characterized in that, A stroke shaft (11) is fixedly connected to the outer side surface of the side chamber (101). The stroke shaft (11) passes through the rack (10), and the rack (10) has a tooth groove at its bottom.

3. The laboratory exhaust ventilation device according to claim 1, characterized in that, A support rod (7) is fixedly connected to the side surface of the upper chamber (101) of the purification frame (1), and a servo motor (12) is fixedly connected to the upper surface of the support rod (7).

4. A laboratory exhaust ventilation device according to claim 3, characterized in that, The output end of the servo motor (12) is fixedly connected to a gear (13), and the gear (13) meshes with the tooth groove of the rack (10).

5. A laboratory exhaust ventilation device according to claim 1, characterized in that, The inner side surface of the purification frame (1) is provided with a limiting component (8). The limiting component (8) includes a fixed shaft (801), a spring (802) and a limiting plate (803). The fixed shaft (801) is fixedly connected to the inner side surface of the purification frame (1), and the limiting plate (803) is slidably connected to the cylindrical surface of the fixed shaft (801).

6. A laboratory exhaust ventilation device according to claim 5, characterized in that, The spring (802) is wrapped around the cylindrical surface of the fixed shaft (801), and the two ends of the spring (802) are respectively fixedly connected to the inner side surface of the purification frame (1) and the side surface of the limiting plate (803).

7. A laboratory exhaust ventilation device according to claim 1, characterized in that, The purification frame (1) is provided with a top cover (3) at the top, and an air outlet (4) is provided on the top cover (3).

8. A laboratory exhaust ventilation device according to claim 1, characterized in that, The output end of the vacuum pump (2) is connected to the bottom of the placement slot of the purification frame (1) through a pipe, and the input end of the vacuum pump (2) is connected to the interior of the laboratory through a pipe. A sealing ring (16) is fixedly connected in the circular groove on the outer side surface of the side chamber (101). The inner cylindrical surface of the sealing ring (16) is in close contact with the surface of the moving tube (9).

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