CN211515495U

CN211515495U - Ventilation device for chemical laboratory

Info

Publication number: CN211515495U
Application number: CN201921608015.0U
Authority: CN
Inventors: 李维祥
Original assignee: Beijing Real Environment Engineering Technology Co ltd
Current assignee: Beijing Real Environment Engineering Technology Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-09-18
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to a ventilation unit technical field just discloses a chemistry experiment uses ventilation unit in room, including fixing pipeline frame and the power supply unit on the roof, be equipped with the ventilation pipe on the pipeline frame, the constant head tank has been seted up to one side of ventilation pipe inner chamber. This ventilation unit is used in chemistry experiment, dust in to the air that carries out the air-supply line through the filter screen filters, the electrostatic adsorption mechanism that rethread negative plate and anode plate formed, fixed granule in the white cigarette that produces in the small dust in the adsorbed air and the chemistry experiment, and collect these dusts in the drawer at anode plate place, thereby every period, clear up the dust of long-pending attaching on the anode plate through taking out the drawer, avoid long-time the back of using, thereby accumulation dust influences the ventilation effect in the ventilation duct, and be difficult to the problem of clearance, also can avoid the dust to M type intraductal alkali lye of taking out and acidic liquid to air purification's influence simultaneously.

Description

Ventilation device for chemical laboratory

Technical Field

The utility model relates to a ventilation unit technical field specifically is a chemistry experiment uses ventilation unit in room.

Background

In the chemical experiment process, various bad smell, corrosive, toxic or explosive gases are often generated, if the harmful gases are not discharged outdoors in time, indoor air pollution is caused, the health and the safety of experimenters are influenced, and the precision and the service life of instruments and equipment are influenced, so that the laboratory ventilation is an indispensable component in the laboratory design.

However, the existing chemical laboratory ventilation equipment does not consider the problem of discharging toxic and harmful gases generated in the chemical experiment process while considering the indoor ventilation of the laboratory, and the harmful gases are discharged outdoors along with the ventilation pipeline, so that the air is polluted, and when the harmful gases are inhaled by a human body, the health of the human body is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a ventilation unit is used in chemistry experiment room possesses the advantage of purifying the harmful gas that the chemistry experiment produced, has solved current chemistry laboratory ventilation equipment, when considering the indoor ventilation of laboratory, does not consider the discharge problem of the poisonous and harmful gas that produces in the chemistry experimentation, these harmful gases are discharged to outdoor along with air pipe, not only can cause the pollution to the air, when the human body inhales these harmful gases, still can influence the problem of health.

The utility model provides a following technical scheme: a ventilation device for a chemical laboratory comprises a pipeline frame and a power supply device which are fixed on a roof, wherein a ventilation pipe is arranged on the pipeline frame, a positioning groove is formed in one side of an inner cavity of the ventilation pipe, a pull frame is movably sleeved in the positioning groove, a filter screen is arranged in the middle of the pull frame, a blow-off pipe positioned at the bottom of one side of the pull frame is fixedly sleeved at the bottom of the ventilation pipe, a rectifying plate positioned at one side of the pull frame is fixedly sleeved at the inner part of the ventilation pipe, an insulating layer is arranged at the top of the inner cavity of the ventilation pipe positioned at one side of the rectifying plate, a cathode plate is arranged inside the insulating layer, a pull groove positioned right below the cathode plate is formed at the bottom of the inner cavity of the ventilation pipe, a drawer is movably sleeved in the pull groove, another insulating layer, the device comprises an anode plate, a vent pipe, a fixing frame, a vent pipe, a gas concentration detection sensor, a collecting box, a first liquid outlet pipe, a second liquid outlet pipe, a solenoid valve, a gas concentration detection sensor, a second liquid outlet pipe, a pipeline frame, a gas concentration detection sensor, a collecting box, a gas concentration detection sensor and a gas concentration detection sensor, wherein the vent pipe is fixedly arranged in the vent pipe, the vent pipe is arranged on each side of the anode plate, the vent holes are formed in each side of the M pipe, the bottoms of two turning positions at the bottom of the M pipe are respectively fixedly sleeved with a first liquid outlet pipe and a second liquid outlet pipe, the fixing frame is fixedly connected with the top of the M pipe and is arranged above the M pipe, the two liquid outlet pipes, and a controller is arranged in the pipeline frame, and a clamping block positioned above the drawer is sleeved on the ventilation pipe through threads.

Preferably, the anode plate is positioned under the cathode plate, and the anode plate and the cathode plate are both connected with a power supply device.

Preferably, the bottom of the M-shaped pipe is provided with two turning points, and the two turning points at the bottom of the M-shaped pipe are respectively stored with alkali liquor and acidic liquid.

Preferably, the bottoms of the first liquid outlet pipe and the second liquid outlet pipe are fixedly sleeved with the collecting box.

Preferably, the two liquid storage tanks are respectively stored with alkali liquor and acid liquid.

Preferably, the fixture block is L-shaped, one end of the L-shaped fixture block is provided with threads, and the other end of the L-shaped fixture block is movably sleeved with the drawer.

Preferably, the controller is connected with the power supply device, and the controller and the power supply device are connected with the electromagnetic valves and the gas concentration detection sensors which are positioned on the two liquid discharge pipes, the first liquid discharge pipe, the second liquid discharge pipe and the sewage discharge pipe.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the ventilating device for the chemical laboratory is characterized in that through the alkali liquor and the acid liquid which are positioned in the M-shaped pipe, can adsorb and purify the air in the ventilation pipe, avoids the problem that the environment and the personnel health are influenced by the discharge of acidic or alkaline toxic and harmful gases generated in the chemical experiment process to the external environment, meanwhile, the device utilizes the gas concentration detection sensor to detect the concentration of toxic and harmful gases in the air purified by the M-shaped pipe, when the gas concentration detection sensor detects that the concentration of toxic and harmful gases in the air is higher after the M-shaped pipe is purified, the first liquid outlet pipe and the second liquid outlet pipe are opened to discharge the original alkali liquor and acidic liquid of the M-shaped pipe, then the first liquid outlet pipe and the second liquid outlet pipe are closed, the liquid discharge pipe at the bottom of the liquid storage tank is opened to discharge new alkali liquor and acidic liquid, thereby realizing the automatic replacement of the alkali liquor and the acidic liquid for the purification in the M-shaped pipe and ensuring the purification effect under the long-term use condition.

2. This ventilation unit is used in chemistry experiment, dust in to the air that carries out the air-supply line through the filter screen filters, the electrostatic adsorption mechanism that rethread negative plate and anode plate formed, fixed granule in the white cigarette that produces in the small dust in the adsorbed air and the chemistry experiment, and collect these dusts in the drawer at anode plate place, thereby every period, clear up the dust of long-pending attaching on the anode plate through taking out the drawer, avoid long-time the back of using, thereby accumulation dust influences the ventilation effect in the ventilation duct, and be difficult to the problem of clearance, also can avoid the dust to M type intraductal alkali lye of taking out and acidic liquid to air purification's influence simultaneously.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a structural rectifying plate of the present invention;

FIG. 3 is a schematic view of the drawer structure of the present invention;

fig. 4 is a schematic view of the structural block of the present invention.

In the figure: 1. a pipe rack; 2. a vent pipe; 3. positioning a groove; 4. a pull frame; 5. a filter screen; 6. a blow-off pipe; 7. a rectifying plate; 8. an insulating layer; 9. a cathode plate; 10. drawing the groove; 11. a drawer; 12. an anode plate; 13. an M-shaped pipe; 14. a vent hole; 15. a first liquid outlet pipe; 16. a second liquid outlet pipe; 17. a fixed mount; 18. a liquid storage tank; 19. a liquid discharge pipe; 20. an electromagnetic valve; 21. a gas concentration detection sensor; 22. a collection box; 23. a clamping block; 24. a controller; 25. and a power supply device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a ventilation device for chemical laboratory, comprising a pipe rack 1 fixed on the roof and a power supply device 25, the pipe rack 1 is provided with a ventilation pipe 2, one side of the inner cavity of the ventilation pipe 2 is provided with a positioning groove 3, a pull frame 4 is movably sleeved in the positioning groove 3, a filter screen 5 is arranged in the middle of the pull frame 4, the positioning groove 3 arranged on the ventilation pipe 2 is utilized to facilitate the positioning and installation of the filter screen 5, the filter screen 5 in the device adopts a pull type, the pull frame 4 can be drawn out from the positioning groove 3 through the top of the ventilation pipe 2 at intervals, so as to take out the filter screen 5 for cleaning, thereby ensuring the filtering effect of the filter screen 5, the bottom of the ventilation pipe 2 is fixedly sleeved with a drain pipe 6 positioned at the bottom of one side of the pull frame 4, and at intervals through the, the electromagnetic valve 20 positioned on the sewage discharge pipe 6 is opened through the controller 24, so that dust filtered by the filter screen 5 and falling down is conveniently cleaned, the cleanliness of the ventilation pipe 2 is ensured, the rectifying plate 7 positioned on one side of the pull-out frame 4 is fixedly sleeved in the ventilation pipe 2, the air filtered by the filter screen 5 through the rectifying plate 7 is rectified, so that the stability and uniformity of the air entering a static electric field formed by the cathode plate 9 and the anode plate 12 are ensured, the electrostatic force field formed by the cathode plate 9 and the anode plate 12 is favorably improved for filtering the dust in the air, the insulating layer 8 is arranged at the top of the inner cavity of the ventilation pipe 2 positioned on one side of the rectifying plate 7, the cathode plate 9 and the anode plate 12 can be insulated by utilizing the insulating layer 8 on the cathode plate 9 and the anode plate 12, the electric leakage of the cathode plate 9 and the anode plate 12 under the power, the bottom of the inner cavity of the ventilation pipe 2 is provided with a drawing groove 10 which is positioned right below the cathode plate 9, a drawer 11 is movably sleeved in the drawing groove 10, through the matching of the drawing groove 10 and the drawer 11, a dust collecting structure formed by the anode plate 12 and the drawer 11 is movably arranged on the ventilation pipe 2, at intervals, a clamping block 23 can be rotated, after the power of the cathode plate 9 and the anode plate 12 is cut off, the drawer 11 is drawn out, so that the dust accumulated on the anode plate 12 is cleaned, the filtering effect of fine dust in the air under the long-time use condition of the anode plate 12 and the cathode plate 9 is ensured, the inner wall of the drawer 11 is surrounded by another insulating layer 8, the inside of the other insulating layer 8 positioned on the inner wall of the drawer 11 is provided with the anode plate 12, the power supply device 25 supplies power to the cathode plate 9 and the anode plate 12 which are positioned correspondingly, thereby the dust in the air passing through the electrostatic field is gathered to the anode plate 12, the purpose of electrostatic dust removal of fine dust in the air is realized, on one hand, the improvement of the cleanliness of the air discharged from the ventilation pipe 2 and the ventilation pipe 2 is facilitated, on the other hand, the problem that the subsequent adsorption and purification of the fine dust is influenced due to the dust contained in the air is avoided, the anode plate 12 is positioned under the cathode plate 9, the anode plate 12 and the cathode plate 9 are both connected with the power supply device 25, the M-shaped pipe 13 positioned at one side of the anode plate 12 is fixedly arranged in the ventilation pipe 2, the bottom of the M-shaped pipe 13 is provided with two turning parts, and the two turning parts at the bottom of the M-shaped pipe 13 are respectively stored with alkali liquor and acid liquid, the acidic or alkaline toxic and harmful gas in the air in the ventilation pipe 2 can be adsorbed and purified through the alkali liquor and acid liquid positioned in the M-shaped pipe 13, and the acidic or alkaline toxic and harmful The problem to be solved is that both sides of the M-shaped pipe 13 are respectively provided with a vent hole 14, the bottoms of two turning parts at the bottom of the M-shaped pipe 13 are respectively and fixedly sleeved with a first liquid outlet pipe 15 and a second liquid outlet pipe 16, the bottoms of the first liquid outlet pipe 15 and the second liquid outlet pipe 16 are respectively and fixedly sleeved with a collecting box 22, the top of the vent pipe 2 is fixedly connected with a fixing frame 17 positioned right above the M-shaped pipe 13, the top of the fixing frame 17 is provided with two liquid storage boxes 18, the two liquid storage boxes 18 are respectively stored with alkali liquor and acidic liquid, the bottoms of the two liquid storage boxes 18 are respectively and fixedly sleeved with a liquid outlet pipe 19, the bottom of the liquid outlet pipe 19 extends into the M-shaped pipe 13 and is respectively positioned at the turning parts of the M-shaped pipe 13, the two liquid outlet pipes 19, the first liquid outlet pipe 15, the second liquid outlet pipe 16 and a sewage discharge pipe 6 are respectively and fixedly sleeved with an electromagnetic, the device utilizes a gas concentration detection sensor 21 to detect the concentration of poisonous and harmful gas in the air purified through an M-shaped pipe 13, when the gas concentration detection sensor 21 detects that the concentration of the poisonous and harmful gas in the air purified through the M-shaped pipe 13 is higher, a first liquid outlet pipe 15 and a second liquid outlet pipe 16 are opened, the original alkali liquor and acid liquid in the M-shaped pipe 13 are discharged into a collection box 22, then the first liquid outlet pipe 15 and the second liquid outlet pipe 16 are closed, two liquid outlet pipes 19 at the bottom of a liquid storage box 18 are opened, new alkali liquor and acid liquid are discharged into the M-shaped pipe 13, so that the automatic replacement of the alkali liquor and acid liquid for purification in the M-shaped pipe 13 is realized, the purification effect under the long-term use condition is ensured, the collection box 22 positioned under the M-shaped pipe 13 is arranged on one side of a pipeline frame 1, a controller 24 is arranged in the pipeline frame 1, a clamping block 23 positioned above a drawer 11, the fixture block 23 is L-shaped, one end of the fixture block 23L-shaped is provided with threads, the other end of the fixture block 23L-shaped is movably sleeved with the drawer 11, the controller 24 is connected with the power supply device 25, and the controller 24 and the power supply device 25 are connected with the electromagnetic valve 20 and the gas concentration detection sensor 21 which are positioned on the two liquid discharge pipes 19, the first liquid discharge pipe 15, the second liquid discharge pipe 16 and the sewage discharge pipe 6.

The working principle is as follows: firstly, air exhausted from a chemical laboratory firstly passes through a filter screen 5, dust with larger particle size in the air is filtered by the filter screen 5, the filtered air enters an electrostatic field formed between a cathode plate 9 and an anode plate 12 after being rectified by a rectifying plate 7, so that dust with smaller particles in the air is gathered towards the anode plate 12, then the air after dust removal and filtration enters an M-shaped pipe 13 through a vent hole 14 on the left side of the M-shaped pipe 13 and passes through two turning positions containing alkali liquor and acidic liquid inside the M-shaped pipe in sequence, and is exhausted through a vent hole 14 on the right side of the M-shaped pipe, then a gas concentration detection sensor 21 is used for detecting the concentration of toxic and harmful gas in the air after the alkali liquor and the acidic liquid inside the M-shaped pipe 13 are adsorbed and filtered, and finally, when the concentration of the toxic and harmful gas in the air after the M-shaped pipe is purified by, the first liquid outlet pipe 15 and the second liquid outlet pipe 16 are opened, the original alkali liquor and the original acid liquid in the M-shaped pipe 13 are discharged into the collecting box 22, then the first liquid outlet pipe 15 and the second liquid outlet pipe 16 are closed, the two liquid outlet pipes 19 at the bottom of the liquid storage box 18 are opened, and new alkali liquor and new acid liquid are discharged into the M-shaped pipe 13, so that the automatic replacement of the alkali liquor and the acid liquid for purification in the M-shaped pipe 13 is realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chemistry experiment uses ventilation unit in room, is including fixing pipeline frame (1) and power supply unit (25) on the roof, its characterized in that: the pipeline frame is characterized in that a ventilating pipe (2) is arranged on the pipeline frame (1), a positioning groove (3) is formed in one side of an inner cavity of the ventilating pipe (2), a drawing frame (4) is movably sleeved in the positioning groove (3), a filter screen (5) is arranged in the middle of the drawing frame (4), a blow-off pipe (6) positioned at the bottom of one side of the drawing frame (4) is fixedly sleeved at the bottom of the ventilating pipe (2), a rectifying plate (7) positioned at one side of the drawing frame (4) is fixedly sleeved at the inner part of the ventilating pipe (2), an insulating layer (8) is arranged at the top of one side of the rectifying plate (7) in the inner cavity of the ventilating pipe (2), a cathode plate (9) is arranged in the insulating layer (8), a drawing groove (10) positioned under the cathode plate (9) is formed in the bottom of the inner cavity, the inner wall of the drawer (11) is surrounded by another insulating layer (8), an anode plate (12) is arranged inside the other insulating layer (8) on the inner wall of the drawer (11), an M-shaped pipe (13) positioned on one side of the anode plate (12) is fixedly arranged inside the ventilation pipe (2), ventilation holes (14) are formed in two sides of the M-shaped pipe (13), the bottoms of two turning positions at the bottom of the M-shaped pipe (13) are respectively and fixedly sleeved with a first liquid outlet pipe (15) and a second liquid outlet pipe (16), the top of the ventilation pipe (2) is fixedly connected with a fixing frame (17) positioned right above the M-shaped pipe (13), two liquid storage tanks (18) are arranged at the top of the fixing frame (17), liquid discharge pipes (19) are respectively and fixedly sleeved at the bottoms of the two liquid storage tanks (18), the bottoms of the liquid discharge pipes (19) extend to the inside of the M-shaped pipe (13) and are respectively positioned at the turning positions of the, two all fixed cover is equipped with solenoid valve (20) on fluid-discharge tube (19), first drain pipe (15), second drain pipe (16) and blow off pipe (6), the inside fixed mounting of ventilation pipe (2) has gas concentration detection sensor (21) that are located M type pipe (13) one side, one side of pipeline frame (1) is equipped with collecting box (22) that are located M type pipe (13) under, and is equipped with controller (24) in pipeline frame (1), the screw thread cover is equipped with fixture block (23) that are located drawer (11) top on ventilation pipe (2).

2. The chemical laboratory ventilation device of claim 1, wherein: the anode plate (12) is positioned under the cathode plate (9), and the anode plate (12) and the cathode plate (9) are both connected with a power supply device (25).

3. The chemical laboratory ventilation device of claim 1, wherein: the bottom of the M-shaped pipe (13) is provided with two turning parts, and the two turning parts at the bottom of the M-shaped pipe (13) are respectively stored with alkali liquor and acid liquid.

4. The chemical laboratory ventilation device of claim 1, wherein: the bottoms of the first liquid outlet pipe (15) and the second liquid outlet pipe (16) are fixedly sleeved with the collection box (22).

5. The chemical laboratory ventilation device of claim 1, wherein: and alkali liquor and acidic liquid are respectively stored in the two liquid storage tanks (18).

6. The chemical laboratory ventilation device of claim 1, wherein: the fixture block (23) is L-shaped, one end of the L-shaped fixture block (23) is provided with threads, and the other end of the L-shaped fixture block (23) is movably sleeved with the drawer (11).

7. The chemical laboratory ventilation device of claim 1, wherein: the controller (24) is connected with the power supply device (25), and the controller (24) and the power supply device (25) are connected with the electromagnetic valves (20) and the gas concentration detection sensors (21) which are positioned on the two liquid discharge pipes (19), the first liquid discharge pipe (15), the second liquid discharge pipe (16) and the sewage discharge pipe (6).