CN210586314U

CN210586314U - Air current overflow fume chamber is prevented in chemistry experiment room

Info

Publication number: CN210586314U
Application number: CN201921602969.0U
Authority: CN
Inventors: 吴琴
Original assignee: Taixing Hualong Chemical Experiment Equipment Co ltd
Current assignee: Taixing Hualong Chemical Experiment Equipment Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-05-22
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a chemistry experiment room air-flow overflow proof fume chamber, including the box, be equipped with the laboratory bench in the middle of the box, the box both sides are equipped with the spout, and sliding connection has perspective window in the spout, and the box top is equipped with the fan, and fan department is equipped with the gas vent, and the box side is equipped with the button, button and fan electric connection, and the laboratory bench below is equipped with four lockers, the utility model discloses a locating lever joint can blow off a formation stifled air current wall from the gas vent department with the air current at the fixed perspective window of optional position in the teeth of a cogwheel clearance through the fan, avoids harmful substance to spill over from perspective window department, has ensured personnel.

Description

Air current overflow fume chamber is prevented in chemistry experiment room

Technical Field

The utility model relates to a fume chamber field specifically is a chemistry experiment room prevents that air current overflows fume chamber.

Background

Various harmful gases, odor, moisture and flammable, explosive and corrosive substances are often generated in chemical experiments, potential hazards are caused to the safety of researchers, experiments are usually carried out in a fume hood in order to protect the safety of the researchers, and the existing fume hood has some problems in use; firstly, the perspective window of the existing ventilation cabinet generally adopts a motor to pull a traction rope to control the perspective window to lift, and in the lifting process, the noise is large, the perspective window is unstable in operation and cannot be fixed at any position; secondly, the reaction speed of some experiments is high, a large amount of harmful substances are rapidly generated, and the ventilation system cannot discharge the harmful substances in time, so that the safety of personnel is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chemistry experiment room prevents that air current overflows fume chamber to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a chemistry experiment room air current overflow proof fume chamber, includes the box, be equipped with the laboratory bench in the middle of the box, the box both sides are equipped with the spout, sliding connection has perspective window in the spout, the box top is equipped with the fan, fan department is equipped with the gas vent, the box side is equipped with the button, button and fan electric connection, the laboratory bench below is equipped with four lockers.

Preferably, a wrench is arranged in the middle of the perspective window, the two sides of the perspective window are located in the sliding groove and are provided with a connecting box, the two sides of the connecting box are provided with positioning rods, springs are arranged between the positioning rods, a fixed pulley is arranged on the connecting box, the tail ends of the positioning rods are connected with connecting ropes, and the connecting ropes penetrate through the connecting box and are connected with the wrench through the fixed pulley.

Preferably, the inner walls of the two sides of the sliding groove are provided with gear teeth in an array mode, the size of a gap between the gear teeth is matched with the size of the positioning rod, the two sides of the upper end of the perspective window are fixedly connected with rollers, and the perspective window is connected into the sliding groove in a sliding mode through the rollers.

Preferably, the laboratory bench top is equipped with the arc cover, arc cover and gas vent communicate with each other, the slope of laboratory bench both sides is equipped with the air exit, and the left side the air exit is close to perspective window, be equipped with the fan in the middle of the laboratory bench below, laboratory bench below right side is equipped with the air inlet, two the air exit passes through the fan and the air inlet is connected.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a through adding the locating lever, pulling the spanner in the middle of the perspective window, through connecting the rope pulling two locating levers to the middle removal, the locating lever breaks away from the teeth of a cogwheel department, reciprocate the perspective window through the gyro wheel this moment, when the perspective window moves to suitable position, not hard up the spanner, under the effect of spring, the locating lever moves to the outside, the joint is in the teeth of a cogwheel clearance of spout both sides, fix the position of perspective window, the noise when effectively having reduced the perspective window goes up and down, also make the perspective window fix in arbitrary position simultaneously; secondly, blow in the air outlet department with the air current from the air inlet through the fan of laboratory bench downside, the air outlet that the left side is close to perspective window department can form a stifled air current wall, avoids the harmful substance of experiment to spill over from the transom, has guaranteed experimenter's safety, and the rethread fan is discharged the air current from the gas vent, has also avoided the appearance of negative pressure condition simultaneously.

Drawings

FIG. 1 is a schematic perspective view of a fume hood;

FIG. 2 is a schematic view of a connection structure of the transparent window;

FIG. 3 is a schematic view of the structure of the junction box;

fig. 4 is a schematic view of the structure of the exhaust port.

In the figure: the device comprises a box body 1, a sliding groove 2, a perspective window 3, a wrench 4, a connecting rope 5, a fan 6, an exhaust port 7, an experiment table 8, an exhaust outlet 9, a storage cabinet 10, a button 11, gear teeth 12, a connecting box 13, a positioning rod 14, a spring 15, a fixed pulley 16, a roller 17, an air inlet 18 and an arc cover 19.

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, the present invention provides a technical solution: the utility model provides a chemistry experiment room air-flow overflow prevention fume chamber, includes box 1, is equipped with laboratory bench 8 in the middle of the

box

1, and 1 both sides of box are equipped with spout 2, and sliding connection has perspective window 3 in the

spout

2, and 1 top of box is equipped with fan 6, and fan 6 adopts TD12728-PB, and 6 departments of fan are equipped with

gas vent

7, and 1 side of box is equipped with button 11, button 11 and 6 electric connection of fan, and 8 below on the laboratory bench are equipped with four locker 10.

Be equipped with spanner 4 in the middle of

perspective window

3, 3 both sides of perspective window are located and are equipped with connecting box 13 in the spout 2, connecting box 13 both sides are equipped with locating lever 14, be equipped with spring 15 between two locating levers 14, be equipped with fixed pulley 16 on the connecting

box

13, 14 end connection of two locating levers has connection rope 5, connect rope 5 through connection box 13 and pass through fixed pulley 16 and spanner 4 and be connected, pull the spanner 4 in the middle of perspective window 3, through connecting rope 5 pulling two locating levers 14 to the centre removal, make locating lever 14 break away from the 12 departments of the teeth of a cogwheel.

The array has the teeth of a cogwheel 12 on the inner wall of 2 both sides of spout, and clearance size and the 14 size phase-matchs of locating lever between two teeth of a

cogwheel

12, 3 upper end both sides fixedly connected with gyro wheel 17 of perspective window, perspective window 3 pass through gyro wheel 17 sliding connection in

spout

2, and 14 joints of locating lever are fixed in gear 12 clearance department, fix the position of perspective window 3, and gyro wheel 17 reduces the frictional force when perspective window 3 removes.

8 tops of laboratory bench are equipped with arc cover 19, arc cover 19 communicates with each other with

gas vent

7, 8 inclines in both sides of laboratory bench to be equipped with air exit 9, left side air exit 9 is close to perspective window 3, be equipped with fan 6 in the middle of the 8 below of laboratory bench, 8 below right sides of laboratory bench are equipped with air inlet 18, two air exits 9 pass through fan 6 and air inlet 18 and connect, air exit 9 that the left side is close to perspective window 3 department can form a stifled air current wall, avoid the harmful substance of experiment to spill over from ventilation window 3, the harmful substance discharge that rethread gas vent 7 will produce.

The working principle is as follows: in the experiment, the wrench 4 in the middle of the perspective window 3 is pulled, the two positioning rods 14 are pulled to move towards the middle of the connecting box 13 through the connecting rope 5, so that the positioning rod 14 is separated from the gear teeth 12, the perspective window 3 is moved up and down through the roller 17, when the perspective window 3 is moved to a proper position, the wrench 4 is loosened, under the action of the spring 15, the positioning rod 14 moves outwards and is clamped in the gap of the gear teeth 12 at the two sides of the chute 2, fix perspective window 3's position, make perspective window 3 fix in optional position, 6 with the air current from air inlet 18 insufflate air exit 9 departments through the fan of laboratory bench 8 downside, the air exit 9 that the left side is close to perspective window 3 department can form a stifled air current wall, the harmful substance of avoiding the experiment overflows from ventilation window 3, experimenter's safety has been guaranteed, 6 discharge the air current from gas vent 7 of rethread fan, the appearance of the inside negative pressure condition has also been avoided simultaneously.

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 room prevents that air current overflows fume chamber, includes box (1), its characterized in that: be equipped with laboratory bench (8) in the middle of box (1), box (1) both sides are equipped with spout (2), sliding connection has perspective window (3) in spout (2), box (1) top is equipped with fan (6), fan (6) department is equipped with gas vent (7), box (1) side is equipped with button (11), button (11) and fan (6) electric connection, laboratory bench (8) below is equipped with four locker (10).

2. The fume hood for preventing air flow from overflowing in a chemical laboratory according to claim 1, wherein: be equipped with spanner (4) in the middle of perspective window (3), perspective window (3) both sides are located and are equipped with connecting box (13) in spout (2), connecting box (13) both sides are equipped with locating lever (14), two be equipped with spring (15) between locating lever (14), be equipped with fixed pulley (16) on connecting box (13), two locating lever (14) trailing end connection has connection rope (5), connection rope (5) run through connecting box (13) and are connected through fixed pulley (16) and spanner (4).

3. The fume hood for preventing air flow from overflowing in a chemical laboratory according to claim 1, wherein: the array has teeth of a cogwheel (12), two on the inner wall of spout (2) both sides the clearance size between the teeth of a cogwheel (12) and locating lever (14) size phase-match, perspective window (3) upper end both sides fixedly connected with gyro wheel (17), perspective window (3) are through gyro wheel (17) sliding connection in spout (2).

4. The fume hood for preventing air flow from overflowing in a chemical laboratory according to claim 1, wherein: laboratory bench (8) top is equipped with arc cover (19), arc cover (19) and gas vent (7) communicate with each other, laboratory bench (8) both sides slope is equipped with air exit (9), the left side air exit (9) are close to perspective window (3), be equipped with fan (6) in the middle of laboratory bench (8) below, laboratory bench (8) below right side is equipped with air inlet (18), two air exit (9) are connected through fan (6) and air inlet (18).