A laboratory exhaust gas purification treatment ventilation device

Abstract

This utility model discloses a laboratory exhaust gas purification and ventilation device, including a housing, an air inlet pipe on one side of the housing, an air outlet pipe on the other side of the housing, an air inlet assembly on the air inlet pipe, a spray assembly inside the housing, a filter assembly on the housing, a ventilation assembly on the air outlet pipe, and a purification assembly inside the housing. By placing the air inlet assembly above the experimental platform, the exhaust gas generated during the experiment is drawn into the housing through the air inlet assembly and air inlet pipe via the ventilation assembly. The spray assembly sprays the exhaust gas into the housing, allowing the spray liquid in the spray assembly to contact the exhaust gas, thereby neutralizing acidic or alkaline exhaust gases. Since the filter assembly is located below the spray pipe, when the spray liquid sprays the exhaust gas, the spray liquid and exhaust gas pass through the filter plate, leaving particulate impurities on the filter plate for filtration.

Description

Technical Field

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

[0002] Laboratory ventilation is an essential component of laboratory design. To prevent laboratory staff from inhaling toxic, pathogenic, or undetermined toxic organic or inorganic gases (such as acid mist and sulfuric acid gas), laboratories should have good ventilation.

[0003] Because exhaust gas purification and ventilation devices extract harmful gases from cleanrooms, these gases typically contain a large amount of particulate matter and vapors. Existing devices mostly only absorb organic waste gases using activated carbon plates, lacking structures for treating acidic or alkaline inorganic waste gases. This results in the discharge of acidic or alkaline waste gases outside the device, causing environmental pollution. Furthermore, when vapors come into contact with the inner wall of the pipes, deposits form on the wall. If there is excessive liquid on the inner wall, it may drip onto the workbench, causing environmental pollution and affecting experiments. Therefore, to solve these problems, we need to design a laboratory exhaust gas purification and ventilation device. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0006] A laboratory exhaust gas purification and ventilation device, comprising:

[0007] The enclosure has an air inlet pipe on one side and an air outlet pipe on the other side. The air inlet pipe is equipped with an air inlet assembly. The enclosure contains a spray assembly, a filter assembly, a ventilation assembly, and a purification assembly.

[0008] As a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, the air inlet assembly includes an air inlet hood, a liquid receiving box, and a fixing strip. The fixing strip is fixedly connected to the air inlet hood, the liquid receiving box has an installation groove on its inner side, and a liquid receiving groove is provided on the liquid receiving box. The fixing strip is slidably connected to the installation groove.

[0009] As a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, the spray assembly includes a water pump, a spray pipe, a suction pipe, a first solenoid valve, and a water tank. The water pump is fixedly connected to the top of the tank, the spray pipe is fixedly connected to the water pump, one end of the suction pipe is fixedly connected to the water pump, the other end of the suction pipe is located in the water tank, and the first solenoid valve is fixedly connected to the suction pipe.

[0010] As a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, the filter assembly includes a draw plate, a filter plate, a protective plate, a movable plate, and a spring. The draw plate is provided with a movable groove. The protective plate is fixedly connected to the filter plate. One end of the spring is fixedly connected to the movable plate, and the other end of the spring is fixedly connected to the inner wall of the movable groove. The filter plate is movably connected to the movable plate. The housing is provided with a draw groove, and the draw plate is slidably connected in the draw groove.

[0011] In a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, the ventilation component includes a motor, a rotating fan and a connecting plate. The motor is fixedly connected to the rotating fan, the connecting plate is fixedly connected to the inner wall of the exhaust duct, and the motor is fixedly connected to the connecting plate.

[0012] As a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, the purification component includes an activated carbon adsorption plate and a placement plate. The housing is provided with a placement groove, the activated carbon adsorption plate is fixedly connected to the placement plate, and the placement plate is slidably connected to the placement groove.

[0013] As a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, a control panel is fixedly connected to the box body, a drain pipe is provided at the bottom of the box body, and a second solenoid valve is provided on the drain pipe.

[0014] In a preferred embodiment of the laboratory exhaust gas purification and ventilation device of this utility model, a laser gas analyzer is fixedly connected to the air inlet pipe, the air inlet hood is fixedly connected to the air inlet pipe, and an exhaust net is fixedly connected to the air outlet pipe.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When using this device, by placing the air inlet assembly above the experimental platform and operating the ventilation assembly, the waste gas generated during the experiment enters the chamber through the air inlet assembly and air inlet pipe. The waste gas entering the chamber is then sprayed by the spray assembly, allowing the spray liquid in the spray assembly to come into contact with the waste gas, thereby neutralizing acidic or alkaline waste gas through the spray liquid. At the same time, since the filter assembly is located below the spray pipe, when the spray liquid sprays the waste gas, the spray liquid and waste gas pass through the filter plate, leaving particulate impurities on the filter plate for filtration. Furthermore, because a large amount of spray liquid has a certain impact force when sprayed out through the spray pipe, when the spray liquid falls onto the filter plate, the spring force causes the filter plate to vibrate up and down, thus facilitating the filtration of particulate impurities. For other waste gases, the purification assembly can adsorb and purify the waste gas, allowing the purified waste gas to be discharged outside the device through the air outlet pipe. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. 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. Among them:

[0017] Figure 1 This is a front view of the overall structure of a laboratory exhaust gas purification and ventilation device according to the present invention.

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of a laboratory exhaust gas purification and ventilation device according to the present invention.

[0019] Figure 3 This is an exploded view of the overall structure of a laboratory exhaust gas purification and ventilation device according to the present invention.

[0020] Figure 4 This is a schematic diagram of the air intake component in a laboratory exhaust gas purification and ventilation device according to the present invention.

[0021] Figure 5 This is a schematic diagram of the filter component in a laboratory exhaust gas purification and ventilation device according to the present invention. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Please see Figures 1-5 This utility model provides a laboratory exhaust gas purification and ventilation device, comprising:

[0026] The enclosure 101 has an air inlet pipe 102 on one side and an air outlet pipe 103 on the other side. An air inlet assembly 110 is installed on the air inlet pipe 102. A spray assembly 120 is installed inside the enclosure 101. A filter assembly 130 is installed on the enclosure 101. A ventilation assembly 140 is installed on the air outlet pipe 103. A purification assembly 150 is installed inside the enclosure 101.

[0027] Specifically, when using the device, the air inlet assembly 110 is placed above the experimental platform. With the ventilation assembly 140 in operation, the waste gas generated during the experiment enters the chamber 101 through the air inlet assembly 110 and the air inlet pipe 102. The waste gas entering the chamber 101 is then sprayed by the spray assembly 120, allowing the spray liquid in the spray assembly 120 to contact the waste gas, thereby neutralizing acidic or alkaline waste gas. Simultaneously, the filter assembly 130 filters particulate impurities in the waste gas to prevent them from affecting the use of the device. Furthermore, for other waste gases, the purification assembly 150 can adsorb and purify the waste gas, allowing the purified waste gas to be discharged outside the device through the air outlet pipe 103.

[0028] Please see Figures 1-4 The air intake assembly 110 includes an air intake hood 110a, a liquid receiving box 110b, and a fixing strip 110c. The fixing strip 110c is fixedly connected to the air intake hood 110a. The liquid receiving box 110b has an installation groove 110d on its inner side and a liquid receiving groove 110e on its surface. The fixing strip 110c is slidably connected to the installation groove 110d. The ventilation assembly 140 includes a motor 140a, a rotating fan 140b, and a connecting plate 140c. The motor 140a is fixedly connected to the rotating fan 140b. The connecting plate 140c is fixedly connected to the inner wall of the air outlet duct 103, and the motor 140a is fixedly connected to the connecting plate 140c.

[0029] Specifically, when using the device, the air inlet assembly 110 is placed above the experimental table. When the motor 140a is working, the rotating fan 140b will rotate, causing the device to draw air towards the air inlet hood 110a. This allows the waste gas generated during the experiment to enter the chamber 101 through the air inlet hood 110a and the air inlet pipe 102. When the waste gas enters the chamber 101, because the waste gas contains some vapor, when it comes into contact with the inner wall of the air inlet hood 110a, it will form a liquid deposit on the inner wall and slide down from the air inlet hood 110a, passing through the liquid receiving tank in the liquid receiving box 110b. 110e can receive slipping liquids, preventing them from dripping onto the experimental platform and affecting experimental work. Furthermore, when it is necessary to clean the liquid receiving box 110b, by pulling the liquid receiving box 110b, the fixing strip 110c on the air inlet hood 110a slides on the mounting groove 110d on the liquid receiving box 110b, thereby allowing the liquid receiving box 110b to be horizontally moved out from the bottom of the air inlet hood 110a, which facilitates the cleaning and replacement of the liquid receiving box 110b and prevents liquid from spilling from the liquid receiving box 110b when it is removed, thus avoiding pollution of the experimental platform environment.

[0030] Please see Figures 1-5 The spray assembly 120 includes a water pump 120a, a spray pipe 120b, a suction pipe 120c, a first solenoid valve 120d, and a water tank 120e. The water pump 120a is fixedly connected to the top of the housing 101, the spray pipe 120b is fixedly connected to the water pump 120a, one end of the suction pipe 120c is fixedly connected to the water pump 120a, and the other end of the suction pipe 120c is located in the water tank 120e. The first solenoid valve 120d is fixedly connected to the suction pipe 120c. The filter assembly 130 includes a drawer plate 130a, a filter plate 130b, a protective plate 130c, a movable plate 130d, and a spring 130e. The drawer plate 130a has a movable groove 130f. The protective plate 130c is fixedly connected to the filter plate 130b. One end of the spring 130e is fixedly connected to the movable plate 130d, and the other end is fixedly connected to the inner wall of the movable groove 130f. The filter plate 130b is movably connected to the movable plate 130d. The housing 101 has a drawer slot 101d, and the drawer plate 130a is slidably connected to the drawer slot 101d. A laser gas analyzer 102a is fixedly connected to the air inlet pipe 102. An air inlet hood 110a is fixedly connected to the air inlet pipe 102. An exhaust screen 103a is fixedly connected to the air outlet pipe 103.

[0031] Specifically, when exhaust gas passes through the inlet pipe 102, the laser gas analyzer 102a detects the acidity and alkalinity of the exhaust gas entering the housing 101 and transmits the data to the control panel 101a. The control panel 101a controls the first solenoid valve 120d on the extraction pipe 120c, thereby facilitating the spray assembly 120 to extract neutralizing liquid for spraying and neutralizing the exhaust gas entering the housing 101. When the spray assembly 120 sprays the exhaust gas, the first solenoid valve 120d opens the extraction pipe 120c, which activates the water pump 120a to pump the neutralizing liquid from the water tank 120e to the spray pipe 120b, and the spray pipe 120b washes the exhaust gas, thereby neutralizing acidic or alkaline substances in the exhaust gas. Furthermore, the filter plate 130b on the filter assembly 130 filters both the exhaust gas and the sprayed neutralizing liquid, allowing particulate impurities in the exhaust gas to remain on the filter plate 130b. The filter plate 130b allows other waste gases and spray liquids to pass through, facilitating subsequent purification. Furthermore, the large amount of spray neutralizing liquid sprayed through the nozzle 120b has a certain impact force. When the spray liquid falls onto the filter plate 130b, the force of the spring 130e causes the filter plate 130b to vibrate up and down, thus facilitating the filtration of particulate impurities and improving the device's efficiency in filtering particulate matter from the waste gas. When it is necessary to clean the particulate impurities on the filter plate 130b, the pull plate 130a is pulled in the extraction groove 101d, allowing the filter plate 130b to be removed for easy cleaning. Furthermore, the protective plate 130c on the filter plate 130b prevents particulate impurities from sliding from the side of the filter plate 130b to the bottom of the device when the pull plate 130a and filter plate 130b are removed, thus avoiding difficulties in cleaning.

[0032] Please see Figures 1-3 The purification component 150 includes an activated carbon adsorption plate 150a and a placement plate 150b. A placement groove 101e is provided on the housing 101. The activated carbon adsorption plate 150a is fixedly connected to the placement plate 150b, and the placement plate 150b is slidably connected to the placement groove 101e. A control panel 101a is fixedly connected to the housing 101. A drain pipe 101b is provided at the bottom of the housing 101, and a second solenoid valve 101c is installed on the drain pipe 101b.

[0033] Specifically, after the remaining exhaust gas passes through the filter assembly 130, it is forced through the activated carbon adsorption plate 150a by the ventilation assembly 140. The activated carbon adsorption plate 150a absorbs harmful substances in the exhaust gas, and the purified exhaust gas is discharged from the outlet pipe 103. Furthermore, by installing multiple purification components 150 on the housing 101, the purification effect of the device on the exhaust gas can be improved. At the same time, when the activated carbon adsorption plate 150a is unable to absorb harmful substances in the exhaust gas, the placement plate 150b is pulled to allow the placement plate 150a to move. b can be moved in the placement tank 101e, so that the placement plate 150b and activated carbon adsorption plate 150a can be removed from the placement tank 101e for replacement, improving the practicality of the device; the device can be controlled through the control panel 101a, which facilitates the purification of laboratory waste gas; when it is necessary to clean the liquid inside the chamber 101, the second solenoid valve 101c can be controlled through the control panel 101a, so that the drain pipe 101b can be opened, which facilitates the discharge of liquid in the inner cavity of the chamber 101 from the drain pipe 101b.

[0034] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A laboratory exhaust gas purification and ventilation device, characterized in that, include: The enclosure (101) has an air inlet pipe (102) on one side and an air outlet pipe (103) on the other side. An air inlet assembly (110) is provided on the air inlet pipe (102). A spray assembly (120) is provided in the enclosure (101). A filter assembly (130) is provided on the enclosure (101). A ventilation assembly (140) is provided on the air outlet pipe (103). A purification assembly (150) is provided in the enclosure (101). The air intake assembly (110) includes an air intake hood (110a), a liquid receiving box (110b), and a fixing strip (110c). The fixing strip (110c) is fixedly connected to the air intake hood (110a). The liquid receiving box (110b) has an installation groove (110d) on its inner side and a liquid receiving groove (110e) on its surface. The fixing strip (110c) is slidably connected to the installation groove (110d).

2. The laboratory exhaust gas purification and ventilation device according to claim 1, characterized in that, The spray assembly (120) includes a water pump (120a), a spray pipe (120b), a suction pipe (120c), a first solenoid valve (120d), and a water tank (120e). The water pump (120a) is fixedly connected to the top of the housing (101), the spray pipe (120b) is fixedly connected to the water pump (120a), one end of the suction pipe (120c) is fixedly connected to the water pump (120a), and the other end of the suction pipe (120c) is located in the water tank (120e). The first solenoid valve (120d) is fixedly connected to the suction pipe (120c).

3. The laboratory exhaust gas purification and ventilation device according to claim 2, characterized in that, The filter assembly (130) includes a drawer plate (130a), a filter plate (130b), a protective plate (130c), a movable plate (130d), and a spring (130e). The drawer plate (130a) is provided with a movable groove (130f). The protective plate (130c) is fixedly connected to the filter plate (130b). One end of the spring (130e) is fixedly connected to the movable plate (130d), and the other end of the spring (130e) is fixedly connected to the inner wall of the movable groove (130f). The filter plate (130b) is movably connected to the movable plate (130d). The housing (101) is provided with a drawer slot (101d), and the drawer plate (130a) is slidably connected in the drawer slot (101d).

4. The laboratory exhaust gas purification and ventilation device according to claim 1, characterized in that, The ventilation assembly (140) includes a motor (140a), a rotating fan (140b), and a connecting plate (140c). The motor (140a) is fixedly connected to the rotating fan (140b), and the connecting plate (140c) is fixedly connected to the inner wall of the air outlet duct (103). The motor (140a) is fixedly connected to the connecting plate (140c).

5. A laboratory exhaust gas purification and ventilation device according to claim 4, characterized in that, The purification component (150) includes an activated carbon adsorption plate (150a) and a placement plate (150b). The housing (101) is provided with a placement groove (101e). The activated carbon adsorption plate (150a) is fixedly connected to the placement plate (150b), and the placement plate (150b) is slidably connected to the placement groove (101e).

6. The laboratory exhaust gas purification and ventilation device according to claim 1, characterized in that, A control panel (101a) is fixedly connected to the box (101), and a drain pipe (101b) is provided at the bottom of the box (101). A second solenoid valve (101c) is provided on the drain pipe (101b).

7. The laboratory exhaust gas purification and ventilation device according to claim 1, characterized in that, A laser gas analyzer (102a) is fixedly connected to the air inlet pipe (102), the air inlet hood (110a) is fixedly connected to the air inlet pipe (102), and an exhaust net (103a) is fixedly connected to the air outlet pipe (103).

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