CN216420582U

CN216420582U - Ventilation unit is used in surfactant test

Info

Publication number: CN216420582U
Application number: CN202123298166.0U
Authority: CN
Inventors: 龙小飞; 李龙云
Original assignee: Zhuhai Longkang Electronic Technology Co ltd
Current assignee: Zhuhai Longkang Electronic Technology Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-03
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a ventilation device for surfactant test, which comprises a fume hood with an upper cavity and a lower cavity, wherein a workbench is arranged in the lower cavity of the fume hood, an air suction opening and a variable frequency fan are respectively arranged at the bottom and the top of the upper cavity of the fume hood, and the output end of the variable frequency fan is communicated with the external environment through an exhaust pipe; a gas-collecting hood is arranged on the air suction opening, and a gas concentration sensor electrically connected with a controller arranged on the outer wall of the lower cavity of the fume hood is arranged on the gas-collecting hood; the upper cavity of the ventilation cabinet is internally provided with a HEPA filtering structure and an activated carbon filtering structure from top to bottom in sequence, wherein the variable frequency fan is electrically connected with the controller through a frequency converter. The utility model has the advantages of can carry out effectual filtration to the chemical gas that produces when chemical reaction is experimental, can be according to chemical gas's concentration automatically regulated volume of airing exhaust, be convenient for in time discharge chemical gas.

Description

Ventilation unit is used in surfactant test

Technical Field

The utility model relates to an experimental ventilation technical field of surfactant, more specifically say, especially relate to an experimental ventilation unit that uses of surfactant.

Background

For chemical enterprises, in the process of developing chemical agents such as surfactants, chemical reaction tests are usually required to be performed on the surfactants, chemical gases harmful to human bodies are often generated during the tests, and in order to prevent the chemical gases generated during the chemical reaction tests from diffusing in workplaces and threatening the personal safety of testers, people usually install ventilation equipment near the sites where the chemical reaction tests are performed to discharge the harmful chemical gases to the outdoors.

However, the existing ventilation equipment generally has a simple functional structure, and most of the existing ventilation equipment is composed of an exhaust fan and an exhaust duct, when in use, chemical gas is directly exhausted to the outside through the exhaust duct head by the exhaust fan, and because of the lack of the function of filtering and processing the chemical gas, air pollution can be caused by directly exhausting the chemical gas to the external environment; in addition, in the process of pumping and exhausting chemical gas, the chemical gas sometimes meets lateral wind force to generate turbulence, the chemical gas is inconvenient to exhaust in time, the existing ventilation equipment cannot automatically adjust the air exhaust speed according to the concentration of the chemical gas, when the chemical gas is too high in concentration and cannot exhaust in time, the chemical gas can also bring harm to the body of a tester, and actual application requirements are difficult to meet.

How to solve the technical problems becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chemical gas that can produce when experimental to the chemical reaction carries out effectual filtration, can be according to chemical gas's concentration automatically regulated volume of airing exhaust, be convenient for in time discharge chemical gas's the experimental ventilation unit of using of surfactant.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a ventilation device for a surfactant test comprises a fume hood with an upper cavity and a lower cavity, wherein a workbench is arranged in the lower cavity of the fume hood, an air suction port and a variable frequency fan are respectively arranged at the bottom and the top of the upper cavity of the fume hood, and the output end of the variable frequency fan is communicated with the external environment through an exhaust pipe; a gas-collecting hood is arranged on the air suction opening, and a gas concentration sensor electrically connected with a controller arranged on the outer wall of the lower cavity of the fume hood is arranged on the gas-collecting hood; the upper cavity of the ventilation cabinet is internally provided with a HEPA filtering structure and an activated carbon filtering structure from top to bottom in sequence, wherein the variable frequency fan is electrically connected with the controller through a frequency converter.

Preferably, HEPA filtration is including establishing first mounting groove on the both sides wall in the last cavity of fume chamber just be located two on the last cavity of fume chamber first installing port has been seted up between the first mounting groove, two can dismantle between the first mounting groove and be equipped with the HEPA filter screen.

Preferably, the active carbon filtration is including establishing in the last cavity of fume chamber and being located second mounting groove on the both sides wall of first mounting groove below just be located two on the last cavity of fume chamber the second installing port has been seted up between the second mounting groove, two can dismantle between the second mounting groove and be equipped with the active carbon filter screen.

Preferably, a plurality of drawers for storing the appliances are arranged in the lower cavity of the fume hood and below the workbench.

Preferably, a walking wheel with a brake pad is arranged at the bottom of the lower cavity of the fume hood.

Preferably, the variable frequency fan is a Hongkong-G-355A variable frequency fan.

Preferably, the frequency converter is an SKI600-3D0G-4 frequency converter; the controller is an AFPXHC60T controller.

The utility model has the advantages as follows:

when the utility model is used, the chemical gas generated in the chemical reaction test can be effectively guided into the upper cavity of the fume hood through the gas collecting hood and discharged in time, thereby effectively avoiding the chemical gas from generating turbulence when encountering lateral wind force to influence the timely discharge of the chemical gas; in addition, when the utility model is used for filtering the chemical gas guided into the upper cavity of the fume hood, the active carbon filtering structure is firstly used for purifying the toluene, xylene, benzene and other benzenes, phenols, esters, alcohols, aldehydes and other organic gases, malodorous gases and various gases with low concentration and large air quantity containing trace heavy metals in the chemical gas, then the HEPA filtering structure is used for purifying the radioactive particles, impurity ions and the like in the chemical gas with high efficiency, and finally the variable frequency fan is used for discharging the chemical gas to the external environment through the exhaust pipe, thereby realizing the effective filtering treatment of the chemical gas generated during the chemical reaction test, wherein, in the process of discharging the chemical gas through the variable frequency fan, the concentration information of the chemical gas is monitored in real time through the gas concentration sensor and is transmitted to the controller, when the monitored concentration of the chemical gas is too high, adjust frequency conversion fan's rotational speed through the controller and increase the volume of airing exhaust to in time take out chemical gas from the workplace and arrange away, in order to prevent to bring harm for testing personnel's health, consequently, the utility model has the advantages of can carry out effectual filtration, can be according to chemical gas's concentration automatically regulated volume of airing exhaust, be convenient for in time discharge chemical gas to the chemical gas that produces when can be experimental to the chemical reaction.

Drawings

Fig. 1 is a schematic structural diagram of a surfactant test ventilation device according to the present invention.

Reference numbers in the drawings: 1. fume chamber, 2, workstation, 3, inlet scoop, 4, frequency conversion fan, 5, exhaust pipe, 6, gas collecting channel, 7, controller, 8, gas concentration sensor, 9, HEPA filtration, 91, first mounting groove, 92, first mounting hole, 93, HEPA filter screen, 10, active carbon filtration, 100, second mounting groove, 200, second mounting hole, 300, active carbon filter screen, 11, converter, 12, drawer, 13, walking wheel.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1, the ventilation device for the surfactant test comprises a fume hood 1 with an upper cavity and a lower cavity, wherein a workbench 2 is arranged in the lower cavity of the fume hood 1, an air suction port 3 and a variable frequency fan 4 are respectively arranged at the bottom and the top of the upper cavity of the fume hood 1, and the output end of the variable frequency fan 4 is communicated with the external environment through an exhaust pipe 5; a gas-collecting hood 6 is arranged on the air suction opening 3, and a gas concentration sensor 8 electrically connected with a controller 7 arranged on the outer wall of the lower cavity of the fume hood 1 is arranged on the gas-collecting hood 6; an HEPA filtering structure 9 and an activated carbon filtering structure 10 are sequentially arranged in an upper cavity of the ventilation cabinet 1 from top to bottom, wherein the variable frequency fan 4 is electrically connected with the controller 7 through a frequency converter 11.

HEPA filtration 9 is including establishing first mounting groove 91 on the both sides wall in the last cavity of fume chamber 1 just be located two on the last cavity of fume chamber 1 first installing port 92 has been seted up between first mounting groove 91, two can dismantle between first mounting groove 91 and be equipped with HEPA filter screen 93.

Active carbon filtration 10 is including establishing in fume chamber 1's the last cavity and being located second mounting groove 100 on the both sides wall of first mounting groove 91 below just be located two on fume chamber 1's the last cavity second installing port 200 has been seted up between second mounting groove 100, two can dismantle between second mounting groove 100 and be equipped with active carbon filter screen 300.

A plurality of drawers 12 for storing the appliances are arranged in the lower cavity of the fume hood 1 and below the workbench 2.

And a traveling wheel 13 with a brake pad is arranged at the bottom of the lower cavity of the fume hood 1.

The variable frequency fan 4 is a Honyotology-G-355A variable frequency fan.

The frequency converter 11 is an SKI600-3D0G-4 frequency converter; the controller 7 is an AFPXHC60T controller.

When the device is used specifically, firstly, corresponding appliances are respectively stored in corresponding drawers 12 according to categories, and then the ventilation cabinet 1 is pushed to move the ventilation device for the surfactant test to a designated work place under the guidance of the travelling wheels 13; secondly, fixedly installing a hepa filter screen 93 on a first installation groove 91 through a first installation hole 92, fixedly installing an active carbon filter screen 300 on a second installation groove 100 through a second installation hole 200 respectively, starting a variable frequency fan 4 to work through a controller 7 and a frequency converter 11, and then placing a surfactant and a test article on a workbench 2 together for a chemical reaction test; then, chemical gas generated when the surfactant and the test object are subjected to a chemical reaction test is guided into an upper cavity of the fume hood 1 through the gas collecting hood 6 by the variable frequency fan 4; and finally, filtering the chemical substances in the upper cavity of the fume hood 1 by an activated carbon filter screen 300 and a hepa filter screen 92 in sequence, and then discharging the chemical substances to the external environment through a variable frequency fan 4 and an exhaust pipe 5.

In a word, the utility model adopts the above-mentioned structure, have the chemical gas that can produce when experimental to the chemical reaction and carry out effectual filtration, can be according to the gaseous concentration automatically regulated volume of airing exhaust of chemical gas, the gaseous advantage of the timely discharge chemistry of being convenient for.

The above-mentioned embodiments only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, modifications and substitutions can be made, which are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A ventilation device for a surfactant test comprises a ventilation cabinet (1) with an upper cavity and a lower cavity, wherein a workbench (2) is arranged in the lower cavity of the ventilation cabinet (1), an air suction opening (3) and a variable frequency fan (4) are respectively arranged at the bottom and the top of the upper cavity of the ventilation cabinet (1), and the output end of the variable frequency fan (4) is communicated with the external environment through an exhaust pipe (5); the method is characterized in that: a gas-collecting hood (6) is arranged on the air suction opening (3), and a gas concentration sensor (8) electrically connected with a controller (7) arranged on the outer wall of a lower cavity of the fume hood (1) is arranged on the gas-collecting hood (6); the upper cavity of the ventilation cabinet (1) is internally provided with a HEPA filtering structure (9) and an active carbon filtering structure (10) from top to bottom in sequence, wherein the variable frequency fan (4) is electrically connected with the controller (7) through a frequency converter (11).

2. The surfactant testing ventilator as set forth in claim 1, wherein: HEPA filtration (9) are including establishing first mounting groove (91) on the both sides wall in the last cavity of fume chamber (1) just be located two on the last cavity of fume chamber (1) first installing port (92) have been seted up between first mounting groove (91), two can dismantle between first mounting groove (91) and be equipped with HEPA filter screen (93).

3. The surfactant testing ventilator as set forth in claim 2, wherein: active carbon filtration (10) are including establishing in the last cavity of fume chamber (1) and be located second mounting groove (100) on the both sides wall of first mounting groove (91) below just be located two on the last cavity of fume chamber (1) second installing port (200) have been seted up between second mounting groove (100), two can dismantle between second mounting groove (100) and be equipped with active carbon filter screen (300).

4. A surfactant testing aeration device according to any one of claims 1 to 3, wherein: a plurality of drawers (12) for storing the appliances are arranged in the lower cavity of the fume hood (1) and below the workbench (2).

5. A surfactant testing aeration device according to any one of claims 1 to 3, wherein: the bottom of the lower cavity of the fume hood (1) is provided with a travelling wheel (13) with a brake block.

6. A surfactant testing aeration device according to any one of claims 1 to 3, wherein: the variable frequency fan (4) is a Hongkong-G-355A variable frequency fan.

7. The surfactant testing ventilating device according to any one of claims 1 to 3, wherein: the frequency converter (11) is an SKI600-3D0G-4 frequency converter; the controller (7) is an AFPXHC60T controller.