Laboratory ventilation quantity automatic adjusting device
By introducing a dual purification system of a ring filter and activated carbon adsorption plate into the laboratory ventilation system, the problem of harmful gases emanating from the ventilation system polluting the environment has been solved, achieving air purification and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-20
AI Technical Summary
Existing laboratory ventilation systems only install filter plates inside the ventilation components, causing harmful gases to be discharged directly through the exhaust duct, polluting the external environment.
The device employs a dual purification system consisting of a ring filter and an activated carbon adsorption plate, combined with supply and return air fans, to achieve dual air purification. The threaded connection facilitates the replacement and cleaning of the ring filter and activated carbon adsorption plate.
It effectively intercepts particulate pollutants in the air, adsorbs harmful gases and chemicals, ensures that the exhaust air does not pollute the environment, and facilitates the inspection and maintenance of the device.
Smart Images
Figure CN224018499U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a ventilation device field, concretely is a laboratory ventilation volume automatic regulating device. BACKGROUND
[0002] Ventilation device is a kind of equipment for improving air circulation, adjusting indoor and outdoor gas exchange, and is widely used in building, industry, traffic and other fields.The core functions include discharging dirty air, introducing fresh air, controlling temperature and humidity and filtering harmful substances, so as to guarantee environmental comfort and safety.In industrial scenarios, ventilation device can effectively remove dust, smoke or chemical gas, and ensure production safety;Household scenarios focus on energy saving and silent design.
[0003] For example, the authorization announcement No.CN214767679U discloses a laboratory ventilation device, comprising a ventilation assembly, the ventilation assembly is connected with dust removal assembly, the ventilation assembly is used to ventilate laboratory;The ventilation assembly includes a ventilation pipe, the inner wall of the ventilation pipe is fixedly connected with a fan, the dust removal assembly includes a filter plate, the ventilation pipe is provided with a sliding groove, a sliding opening is formed in the inner wall of the ventilation pipe, the sliding groove is communicated with the sliding opening, the length direction of the sliding groove and the ventilation pipe is perpendicular, the filter plate is placed in the sliding groove, the filter plate is slidably connected with the ventilation pipe, the filter plate is perpendicular to the length direction of the ventilation pipe, and the filter plate is used to filter impurities in the ventilation pipe.The laboratory ventilation device provided by the utility model is convenient for cleaning the filter plate, and the filtering efficiency of the filter plate is improved
[0004] The above-mentioned technology only installs filter plate in the ventilation assembly to filter air, harmful gas may be generated in laboratory sometimes, and direct discharge through laboratory air outlet pipe is easy to pollute external environment;Therefore, there is an urgent need to develop a laboratory ventilation volume automatic regulating device to help people solve the existing problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a laboratory ventilation volume automatic regulating device to solve the problem that only filter plate is installed in ventilation assembly to filter air in the existing ventilation device in the above background technology, harmful gas may be generated in laboratory sometimes, and direct discharge through laboratory air outlet pipe is easy to pollute external environment.
[0006] To achieve the above object, the utility model provides the following technical scheme: a laboratory ventilation volume automatic regulating device, including ventilation device, the middle part both sides of ventilation device inside are fixedly provided with air supply fan and return air fan, the both sides of middle part of ventilation device front end surface are fixedly connected with filter box and purification box, the middle part of filter box inside rear end is fixedly connected with external thread connection pipe, the front end of external thread connection pipe is connected with ring filter screen, the middle part of purification box inside is provided with activated carbon adsorption plate.
[0007] Preferably, the both ends of the air supply fan are fixedly connected with first air baffle, the front end of the first air baffle extends to the inside of the filter box and is fixedly connected with the rear end of the external thread connection pipe, the rear end of the first air baffle extends out of the rear end surface of the ventilation device and is fixedly connected with the air supply pipe, and the rear end of the air supply pipe is fixedly connected with the air supply box.
[0008] Preferably, the rear end of the ring filter screen is fixedly connected with internal thread connection pipe, the front end of the ring filter screen is fixedly connected with conical air guide block, and the ring filter screen and the external thread connection pipe are fixedly connected through the internal thread connection pipe.
[0009] Preferably, the middle part of the front end of the filter box is fixedly connected with the air inlet pipe, and the lower end surface of the filter box is openably connected with the lower sealing plate.
[0010] Preferably, the both ends of the return air fan are fixedly connected with second air baffle, the front end of the second air baffle extends to the inside of the purification box, the rear end of the second air baffle extends out of the rear end surface of the ventilation device and is fixedly connected with the return air pipe, and the rear end of the return air pipe is fixedly connected with the return air box.
[0011] Preferably, the lower end of the activated carbon adsorption plate extends out of the lower end surface of the purification box and is fixedly connected with the connecting plate, and the connecting plate and the lower end surface of the purification box are fixedly connected through a plurality of screws.
[0012] Preferably, the middle part of the front end surface of the purification box is fixedly connected with the air outlet pipe.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] (1) In the utility model, the ring filter screen and the activated carbon adsorption plate double purification device are arranged, the ring filter screen can effectively intercept the particulate pollutants in the air, the activated carbon adsorption plate can adsorb harmful gases and chemical substances, and it is ensured that the discharged air will not pollute the environment.
[0015] (2) The utility model discloses a filter box lower end is taken out from the ring filter screen, and the ring filter screen is convenient for cleaning and replacement through the setting of the outer thread connection pipe, the inner thread connection pipe and the outer thread connection pipe are separated through rotating the ring filter screen when overhauling, and the ring filter screen is fixed through the outer thread connection pipe between the ring filter screen and the outer thread connection pipe.
[0016] (3) The utility model discloses a filter box lower end is taken out from the active carbon adsorption board through the setting of the connecting plate, and the active carbon adsorption board is convenient for replacement through the setting of the connecting plate between the connecting plate and the filter box lower end face, and the active carbon adsorption board is drawn out from the filter box lower end through the connecting plate and is separated through the multiple screws when overhauling. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the front view of a laboratory ventilation volume automatic regulating device of the utility model;
[0018] Figure 2 It is the main section view of the filter box and the purification box of the utility model;
[0019] Figure 3 It is the side section view of the filter box of the utility model;
[0020] Figure 4 It is the side section view of the purification box of the utility model.
[0021] In the drawing: 1, ventilation device;101, air supply fan;102, first air guide cover;103, return air fan;104, second air guide cover;2, filter box;201, lower sealing plate;202, outer thread connection pipe;203, air inlet pipe;3, ring filter screen;301, inner thread connection pipe;302, conical air guide block;4, purification box;401, active carbon adsorption board;402, connecting plate;403, screw;404, air outlet pipe;5, air supply pipe;501, air supply box;6, return air pipe;601, return air box. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0023] Please refer to Figures 1-4The utility model provides an embodiment: a laboratory ventilation volume automatic regulating device, including ventilation device 1, the middle part both sides of ventilation device 1 inside are fixedly arranged with air supply fan 101 and return air fan 103, the middle part both sides of the front end face of ventilation device 1 are fixedly connected with filter box 2 and purification box 4 respectively, the middle part fixedly connected with outer thread connection pipe 202 in the rear end of filter box 2, the front end of outer thread connection pipe 202 is connected with annular filter screen 3, the both ends of air supply fan 101 are fixedly connected with first air baffle 102, and the front end of front end first air baffle 102 extends to the inside of filter box 2 and is fixedly connected with the rear end of outer thread connection pipe 202, the rear end of rear end first air baffle 102 extends the rear end face of ventilation device 1 and is fixedly connected with air supply pipe 5, and the rear end of air supply pipe 5 is fixedly connected with air supply box 501, the rear end of annular filter screen 3 is fixedly connected with inner thread connection pipe 301, the front end of annular filter screen 3 is fixedly connected with conical air guide block 302, and annular filter screen 3 and outer thread connection pipe 202 are fixed between through inner thread connection pipe 301 and outer thread connection pipe 202 outside thread connection, the middle part of the front end of filter box 2 is fixedly connected with air inlet pipe 203, and the lower end surface of filter box 2 is openably connected with lower sealing plate 201, and the outside air is sucked through filter box 2 and air inlet pipe 203 by air supply fan 101 and is sent into the inside of laboratory through air supply pipe 5 and air supply box 501, when the outside air passes through the inside of filter box 2, will pass through annular filter screen 3, and the air is filtered through annular filter screen 3, when overhauling, open lower sealing plate 201, make inner thread connection pipe 301 and outer thread connection pipe 202 separate by rotating annular filter screen 3, can take out annular filter screen 3 from the lower end of filter box 2, convenient for annular filter screen 3 cleaning and replacement.
[0024] Please refer to Figure 2 and Figure 4The return air fan 103 has a second air guide hood 104 fixedly connected to both its front and rear ends. The front end of the second air guide hood 104 extends into the interior of the purification box 4, and the rear end of the second air guide hood 104 extends out of the rear end face of the ventilation device 1 and is fixedly connected to a return air duct 6. The rear end of the return air duct 6 is fixedly connected to a return air box 601. An activated carbon adsorption plate 401 is installed in the middle of the interior of the purification box 4. The lower end of the activated carbon adsorption plate 401 extends out of the lower end face of the purification box 4 and is fixedly connected to a connecting plate 402. The connecting plate 402 is fixedly connected to the lower end face of the purification box 4 by multiple screws 403. The front end of the purification box 4... An air outlet duct 404 is fixedly connected to the middle of the chamber. The return air fan 103 draws in the air inside the laboratory through the return air duct 6 and the return air box 601, and discharges it outdoors through the purification box 4 and the air outlet duct 404. When the air inside the laboratory passes through the purification box 4, it passes through the activated carbon adsorption plate 401. The activated carbon adsorption plate 401 adsorbs harmful substances in the air inside the laboratory, preventing pollution of the outdoor air. During maintenance, by removing multiple screws 403, the connecting plate 402 can be pulled to remove the activated carbon adsorption plate 401 from the bottom of the purification box 4, making it easy to replace the activated carbon adsorption plate 401.
[0025] Working principle: During use, the ventilation volume of the laboratory is adjusted by controlling the power of the supply air fan 101 and the return air fan 103. When the supply air fan 101 is running, outside air enters the filter box 2 through the air inlet pipe 203, is guided evenly by the conical air guide block 302, and passes through the annular filter screen 3 to complete the primary filtration. After removing particulate matter from the air, clean air is delivered to the laboratory through the air supply pipe 5 and the air supply box 501. During maintenance, the lower sealing plate 201 is opened, and the annular filter screen 3 is rotated to disengage the internal threaded connecting pipe 301 and the external threaded connecting pipe 202, allowing the annular filter screen 3 to be removed from the filter box 2. The end is removed for easy cleaning and replacement of the annular filter 3. At the same time, the return air fan 103 draws in polluted air from the laboratory through the return air box 601 and return air duct 6, and guides it into the purification box 4 through the second air guide hood 104. When the polluted air passes through the activated carbon adsorption plate 401, the harmful gases and chemicals in it are effectively adsorbed and purified. Finally, the clean air is safely discharged to the outside through the air outlet duct 404. During maintenance, by removing multiple screws 403, the connecting plate 402 can be pulled to remove the activated carbon adsorption plate 401 from the bottom of the purification box 4, making it easy to replace the activated carbon adsorption plate 401.
[0026] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.
Claims
1. An automatic ventilation volume regulating device for laboratories, comprising a ventilation device (1), characterized in that: The ventilation device (1) has a supply fan (101) and a return fan (103) fixedly installed on both sides of the middle part of the interior. The ventilation device (1) has a filter box (2) and a purification box (4) fixedly connected on both sides of the middle part of the front end face. The filter box (2) has an external threaded connecting pipe (202) fixedly connected to the middle part of the rear end. The external threaded connecting pipe (202) has an annular filter screen (3) connected to the front end. The purification box (4) has an activated carbon adsorption plate (401) installed in the middle part of the interior.
2. The automatic laboratory ventilation volume adjustment device according to claim 1, characterized in that: The air blower (101) is fixedly connected to the front and rear ends with a first air guide hood (102). The front end of the first air guide hood (102) extends into the filter box (2) and is fixedly connected to the rear end of the external threaded connecting pipe (202). The rear end of the first air guide hood (102) extends out of the rear end face of the ventilation device (1) and is fixedly connected to the air supply pipe (5). The rear end of the air supply pipe (5) is fixedly connected to the air supply box (501).
3. The automatic laboratory ventilation volume adjustment device according to claim 1, characterized in that: The annular filter screen (3) is fixedly connected to an internally threaded connecting pipe (301) at its rear end, and a conical air guide block (302) is fixedly connected to the front end of the annular filter screen (3). The annular filter screen (3) and the externally threaded connecting pipe (202) are connected and fixed by the internally threaded connecting pipe (301) being inserted into the externally threaded connecting pipe (202).
4. The automatic laboratory ventilation volume adjustment device according to claim 1, characterized in that: An air inlet pipe (203) is fixedly connected to the middle of the front end of the filter box (2), and a lower sealing plate (201) is openably connected to the lower end face of the filter box (2).
5. The automatic laboratory ventilation volume adjustment device according to claim 1, characterized in that: The return air fan (103) is fixedly connected to the front and rear ends with a second air guide hood (104). The front end of the second air guide hood (104) extends into the purification box (4), and the rear end of the second air guide hood (104) extends out of the rear end face of the ventilation device (1) and is fixedly connected to a return air pipe (6). The rear end of the return air pipe (6) is fixedly connected to a return air box (601).
6. The automatic laboratory ventilation volume adjustment device according to claim 1, characterized in that: The lower end of the activated carbon adsorption plate (401) extends out of the lower end face of the purification box (4) and is fixedly connected to a connecting plate (402). The connecting plate (402) and the lower end face of the purification box (4) are fixedly connected by multiple screws (403).
7. The automatic laboratory ventilation volume adjustment device according to claim 1, characterized in that: An air outlet pipe (404) is fixedly connected to the middle of the front end face of the purification box (4).