CN211757502U

CN211757502U - Clean fume chamber

Info

Publication number: CN211757502U
Application number: CN201922211478.XU
Authority: CN
Inventors: 朱圣杰
Original assignee: Anhui Renhe Purification Industry Development Co ltd; Anhui Renhe Environment Technology Co ltd
Current assignee: Anhui Renhe Purification Industry Development Co ltd; Anhui Renhe Environment Technology Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-27
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a clean fume chamber relates to fume chamber technical field. The utility model discloses a cabinet body, the cabinet body is separated into medicine storage cavity through the baffle, the ventilation cavity, experiment operation cavity and contaminated gas handle the box, medicine storage cavity left side wall sets up to first metal filters, medicine storage cavity and ventilation cavity's separation department sets up to second metal filters, the separation department of ventilation cavity and experiment operation cavity sets up to third metal filters, the separation department of experiment operation cavity and contaminated gas handle the box sets up to the active carbon filter layer, the left side wall of contaminated gas handle the box sets up to air cleaner, the inside fixed mounting of ventilation cavity has a fan mount. The utility model discloses a set up the gaseous anti-backflow device of polluted gas, when first fan and second fan stop work, can prevent poisonous and harmful gas's refluence, avoid poisonous and harmful gas to spread away, lead to causing experimenter's injury or death.

Description

Clean fume chamber

Technical Field

The utility model belongs to the technical field of the fume chamber, especially, relate to a clean fume chamber.

Background

When carrying out the experiment in the laboratory, the acid-base reagent of using in a large number can constantly produce a large amount of poisonous and harmful and corrosive gas, smog, particle etc. and the safety and health of crisis experiment operating personnel damages experimental facilities, consequently must guarantee the smooth emission of poisonous and harmful gas to make the laboratory environment reach the safety standard of national regulation, the fume chamber is the essential equipment among the laboratory ventilation system, so that the poisonous gas in time, discharge completely outdoor.

The patent discloses a clean fume hood, publication number (CN208894829U), the patent is provided with a cabinet body, the cabinet body is horizontally divided into two layers by a clapboard, the first layer is provided with a medicine storage cavity and a ventilation cavity, the second layer is provided with a polluted gas treatment cavity and an experimental operation cavity, gas passes through the ventilation cavity and respectively enters the medicine storage cavity and the experimental operation cavity through a metal filter screen along with air flow, a baffle is arranged in the medicine storage cavity to control the ventilation state of the medicine storage cavity, a gas buffer board on the upper part of the experimental operation cavity can buffer unstable gas of a fan, the polluted gas after the experiment provides organic components in the polluted gas through an active carbon filter screen, and then reaction solution is provided according to the components of the polluted gas generated by different experiments, and the polluted components in the polluted gas are completely treated through full contact with the reaction solution, finally, the air is filtered by the air purifier to generate pure air, and the device has the advantages of simple structure, good air cleaning effect, complete treatment of polluted gas generated in experiments, good ventilation effect, economy and practicability; but when first fan and second fan in this patent received damage or outage, will the during stop work, in case first fan and second fan stop work, in the interior poisonous and harmful gas of experiment operation cavity will flow backwards, lead to in poisonous and harmful gas from the interior diffusion of experiment operation cavity to the ventilation chamber, later in diffusing to the medicine storage cavity, at last in diffusing the laboratory, cause the experimenter to be injured, more serious person probably dies, for this reason, the utility model designs a clean ventilation cabinet, when first fan and second fan stop work, can prevent the refluence of poisonous and harmful gas.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clean fume chamber prevents flow reversal device through setting up the gaseous pollutants, has solved current clean fume chamber and has been difficult to the problem that prevents the refluence of poisonous and harmful gas.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a clean ventilation cabinet, which comprises a cabinet body, wherein the cabinet body is separated into a medicine storage cavity, a ventilation cavity, an experimental operation cavity and a polluted gas treatment box body through a clapboard, the left side wall of the medicine storage cavity is provided with a first metal filter screen, the separation part of the medicine storage cavity and the ventilation cavity is provided with a second metal filter screen, the separation part of the ventilation cavity and the experimental operation cavity is provided with a third metal filter screen, the separation part of the experimental operation cavity and the polluted gas treatment box body is provided with an activated carbon filter layer, the left side wall of the polluted gas treatment box body is provided with an air filter, a fan fixing frame is fixedly arranged in the ventilation cavity, a first fan with a wind gap facing left and a second fan with a wind gap facing down are fixed on the fan fixing frame, the top end in the ventilation cavity is provided with an ultraviolet lamp, the device comprises an experiment operation cavity, a third metal filter screen, a reaction solution cavity, a water pipe, a solution pump, a spraying device, a polluted gas storage cavity, a polluted gas backflow preventing device, a wind receiving plate and two arc guide rods, wherein an experiment table is fixedly arranged in the experiment operation cavity, the gas buffer plate is fixedly arranged in the experiment operation cavity and is positioned under the third metal filter screen, the bottom end of the polluted gas treatment box is provided with the reaction solution cavity, the water pipe is arranged in the reaction solution cavity, the water pipe is provided with the solution pump, the water pipe is connected with the spraying device arranged at the top of the polluted gas treatment box, the polluted gas backflow preventing device is arranged in the medicine storage cavity and comprises a smooth fixed rod, the wind receiving plate and the two arc guide rods, one end of the smooth fixed rod is fixedly arranged on the inner wall of the medicine storage cavity, the top end of the wind receiving plate is fixedly provided with a rotating pipe, the bottom end, two guide grooves matched with the air receiving plate and the semi-cylinder are formed in the air receiving plate and the semi-cylinder, the arc-shaped guide rod is fixedly installed inside the medicine storage cavity, and a baffle is fixedly installed at the tail end of the arc-shaped guide rod.

Furthermore, the medicine storage cavity, the ventilation cavity, the experiment operation cavity and the polluted gas treatment box body are all hinged with box doors.

Furthermore, the box door is made of transparent materials.

Further, the cross-section of arc guide bar is isosceles triangle, the surface of arc guide bar is smooth, set up the cross-section of arc guide bar into isosceles triangle, the gaseous circulation of being convenient for on the one hand, on the other hand is convenient for the bottom of aerofoil and slides above that.

The utility model discloses following beneficial effect has:

the utility model discloses a set up the gaseous anti-backflow device of polluted gas, when first fan and second fan stop work, can prevent poisonous and harmful gas's refluence, avoid poisonous and harmful gas to spread away, lead to causing experimenter's injury or death.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art clean hood;

FIG. 2 is a schematic view of the installation structure of the backflow preventer for polluted gas of the present invention;

figure 3 is a front view of the present invention in figure 2;

FIG. 4 is a schematic view of the installation structure of the smooth fixing rod of the present invention;

fig. 5 is a schematic structural view of the air receiving plate of the present invention;

fig. 6 is a side view of the present invention in fig. 5;

fig. 7 is a schematic structural view of the arc-shaped guide rod of the present invention;

fig. 8 is a top view of the arc-shaped guide rod of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-cabinet body, 2-medicine storage cavity, 3-ventilation cavity, 4-experiment operation cavity, 5-polluted gas treatment box body, 6-first metal filter screen, 7-second metal filter screen, 8-third metal filter screen, 9-active carbon filter layer, 10-air filter, 11-fan fixing frame, 12-first fan, 13-second fan, 14-ultraviolet lamp, 15-experiment table, 16-gas buffer plate, 17-reaction solution cavity, 18-spraying device, 19-water pipe, 20-solution pump, 21-polluted gas backflow preventing device, 2101-smooth fixed rod, 2102-air receiving plate, 2103-rotating pipe, 2104-semi-cylinder, 2105-guide groove and 2106-arc-shaped guide rod, 2107-baffles.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-8, the utility model relates to a clean ventilation cabinet, which comprises a cabinet body 1, the cabinet body 1 is divided into a medicine storage cavity 2, a ventilation cavity 3, an experimental operation cavity 4 and a polluted gas treatment box 5 by a clapboard, the left side wall of the medicine storage cavity 2 is provided with a first metal filter screen 6, the division of the medicine storage cavity 2 and the ventilation cavity 3 is provided with a second metal filter screen 7, the division of the ventilation cavity 3 and the experimental operation cavity 4 is provided with a third metal filter screen 8, the division of the experimental operation cavity 4 and the polluted gas treatment box 5 is provided with an activated carbon filter layer 9, the left side wall of the polluted gas treatment box 5 is provided with an air filter 10, a fan fixing frame 11 is fixedly arranged in the ventilation cavity 3, a first fan 12 with a wind port facing left and a second fan 13 with a wind port facing downward are fixed on the fan fixing frame 11, an ultraviolet lamp 14 is arranged at the top end inside the ventilation cavity 3, an experiment table 15 is fixedly arranged inside the experiment operation cavity 4, a gas buffer plate 16 is fixedly arranged inside the experiment operation cavity 4 and under the third metal filter screen 8, a reaction solution cavity 17 is arranged at the bottom end of the polluted gas treatment box body 5, a water pipe 19 is arranged in the reaction solution cavity 17, a solution pump 20 is arranged on the water pipe 19, the water pipe 19 is connected with a spraying device 18 arranged at the top of the polluted gas treatment box body 5, a polluted gas backflow prevention device 21 is arranged inside the medicine storage cavity 2, the polluted gas backflow prevention device 21 comprises a smooth fixing rod 2101, a wind receiving plate 2102 and two arc-shaped guide rods 2106, one end of the smooth fixing rod 2101 is fixedly arranged on the inner wall of the medicine storage cavity 2, a rotating pipe 2103 is fixedly arranged at the top end of the wind receiving plate 2102, the bottom end of the wind receiving plate 2102 is fixedly provided with a semi-cylinder 2104, the smooth fixing rod 2101 is inserted into the rotating tube 2103 and is rotationally connected with the rotating tube 2103, two guide grooves 2105 matched with 2016 are formed in the wind receiving plate 2102 and the semi-cylinder 2104, the arc-shaped guide rod 2106 is fixedly arranged in the medicine storage cavity 2, and the tail end of the arc-shaped guide rod 2106 is fixedly provided with a baffle 2107.

As shown in fig. 1-8, the medicine storage chamber 2, the ventilation chamber 3, the experiment operation chamber 4 and the contaminated gas treatment chamber 5 are hinged with doors.

Wherein, the chamber door sets up to transparent material.

Wherein, arc guide bar 2106's cross-section is isosceles triangle, and arc guide bar 2106's surface is smooth, sets up arc guide bar 2106's cross-section into isosceles triangle, and the gaseous circulation of being convenient for on the one hand, on the other hand is convenient for the bottom of aerofoil 2102 and slides above that.

One specific application of this embodiment is: receive when damage or outage when first fan 12 and second fan 13, the air current will be in the stationary state this moment, and the windward 2102 will be because the steady of air current is gone up from arc guide bar 2106 and is fallen down this moment, finally receives the windward 2102 and be in the vertical state, blocks up medicine storage cavity 2, avoids the poisonous and harmful gas that produces in the experiment operation cavity 4 to diffuse to the laboratory from the inside of medicine storage cavity 2 in, causes the injury to the experimenter.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A clean fume chamber comprises a chamber body (1), wherein the chamber body (1) is separated into a medicine storage cavity (2), a ventilation cavity (3), an experiment operation cavity (4) and a polluted gas treatment chamber body (5) through a baffle plate, the left side wall of the medicine storage cavity (2) is set as a first metal filter screen (6), the separation part of the medicine storage cavity (2) and the ventilation cavity (3) is set as a second metal filter screen (7), the separation part of the ventilation cavity (3) and the experiment operation cavity (4) is set as a third metal filter screen (8), the separation part of the experiment operation cavity (4) and the polluted gas treatment chamber body (5) is set as an active carbon filter layer (9), the left side wall of the polluted gas treatment chamber body (5) is set as an air filter (10), and a fan fixing frame (11) is fixedly arranged in the ventilation cavity (3), be fixed with wind gap first fan (12) and wind gap second fan (13) down towards left on fan mount (11), the inside top of ventilation cavity (3) is equipped with an ultraviolet lamp (14), the inside fixed mounting of experiment operation cavity (4) has an laboratory bench (15), the inside of experiment operation cavity (4) just is located third metal filters (8) under fixed mounting have a gas buffer board (16), the bottom of polluted gas treatment box (5) is provided with a reaction solution chamber (17), be provided with a water pipe (19) in reaction solution chamber (17), be provided with a solution pump (20) on water pipe (19), water pipe (19) are connected with spray set (18) of setting at polluted gas treatment box (5) top, its characterized in that:

a pollution gas backflow prevention device (21) is arranged in the medicine storage cavity (2), the backflow prevention device (21) for the polluted gas comprises a smooth fixed rod (2101), a wind receiving plate (2102) and two arc-shaped guide rods (2106), one end of the smooth fixing rod (2101) is fixedly arranged on the inner wall of the medicine storage cavity (2), a rotating pipe (2103) is fixedly arranged at the top end of the wind receiving plate (2102), a semi-cylinder (2104) is fixedly arranged at the bottom end of the wind receiving plate (2102), the smooth fixing rod (2101) is inserted in the rotating pipe (2103) and is rotationally connected with the rotating pipe (2103), the air receiving plate (2102) and the semi-cylinder (2104) are provided with two guide grooves (2105) matched with the guide grooves (2016), the arc-shaped guide rod (2106) is fixedly arranged in the medicine storage cavity (2), the tail end of the arc-shaped guide rod (2106) is fixedly provided with a baffle (2107).

2. A clean ventilation cabinet according to claim 1, wherein the drug storage chamber (2), the ventilation chamber (3), the experimental operation chamber (4) and the polluted gas treatment box body (5) are hinged with box doors.

3. A clean fume hood according to claim 2, wherein the door is made of transparent material.

4. A clean fume hood according to claim 1, characterized in that the cross section of the arc-shaped guide rod (2106) is isosceles triangle, and the outer surface of the arc-shaped guide rod (2106) is smooth.