CN215723873U

CN215723873U - Laboratory indoor air exchange device

Info

Publication number: CN215723873U
Application number: CN202122146136.1U
Authority: CN
Inventors: 段春红
Original assignee: Guangzhou Boxiong Scientific Equipment Co ltd
Current assignee: Guangzhou Boxiong Scientific Equipment Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-02-01
Anticipated expiration: 2031-09-06

Abstract

The utility model relates to the field of exhaust equipment, in particular to an indoor air exchange device for a laboratory, which comprises a laboratory main body, wherein an air suction pipe is fixedly inserted and connected to the left side of the inner wall of the laboratory main body, one end, away from the laboratory main body, of the air suction pipe is fixedly connected with a connecting pipe, a double-shaft motor is fixedly connected to the side surface of the inner wall of the connecting pipe, an air suction fan and a scraper are respectively and fixedly connected to two ends of the middle part of the side surface of a rotating shaft at the left end of the double-shaft motor, and a first bevel gear is fixedly sleeved at the right end of the rotating shaft of the double-shaft motor. The device cooperates through biax motor and fan of breathing in and carries out carminative while, brushes through the inner wall of scraper blade to the connecting pipe and sweeps, reduces the possibility of dust adhesion at the connecting pipe inner wall, guarantees the diameter of connecting pipe inner wall, and then guarantees the device and to the carminative efficiency of gas in the laboratory main part, and reduces the user and to the clear frequency of connecting pipe, then filters the dust that the scraper blade brush fell through the filter screen, and the practicality is better.

Description

Laboratory indoor air exchange device

Technical Field

The utility model relates to the field of exhaust equipment, in particular to an indoor air exchange device for a laboratory.

Background

The existing chemistry teaching laboratory has the defects of small ventilation range and poor ventilation effect, so that the air draft exhaust device for the chemistry teaching laboratory with large ventilation range and good ventilation effect needs to be designed urgently.

The prior patent (publication number: CN202290698U) discloses an indoor air exchange device for a chemical teaching laboratory, which comprises an air exhaust main pipeline, a ventilation interface, a silencer, polyurethane foam and an air exhaust inner pipeline. The main exhaust pipeline is a shell and is of an oval pipeline structure as a whole, the inner exhaust pipeline is an inner layer, the main exhaust pipeline and the inner exhaust pipeline form a main body structure of the air conditioner and form an interlayer form, and polyurethane foam is arranged between the main exhaust pipeline and the inner exhaust pipeline in a filling form.

When the device is used for replacing gas in a laboratory, dust in the air is easily adhered to a pipeline for conveying the gas, the diameter of the inner wall of the pipeline is easily reduced for a long time, and the gas replacement efficiency at the rear side of the device is easily influenced; and the device directly conveys gas to the outside of a laboratory, so that acidic gas and dust in the air are easy to pollute the environment, and the device is not green enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an indoor air exchange device for a laboratory, which solves the problems that dust in the air is easily adhered to a pipeline for conveying gas, and the diameter of the inner wall of the pipeline is easily reduced for a long time; the direct delivery of the gas to the outside of the laboratory is prone to environmental contamination problems with acid gases and dust.

In order to achieve the purpose, the utility model provides the following technical scheme: an air suction pipe is fixedly inserted and connected to the left side of the inner wall of the laboratory main body, one end, away from the laboratory main body, of the air suction pipe is fixedly connected with a connecting pipe, the side face of the inner wall of the connecting pipe is fixedly connected with a double-shaft motor, and two ends of the middle portion of the side face of a rotating shaft at the left end of the double-shaft motor are fixedly connected with an air suction fan and a scraper respectively;

the fixed cover of right-hand member of biax motor axis of rotation has first bevel gear, the side meshing of first bevel gear has second bevel gear, the fixed grafting of terminal surface of second bevel gear has the bull stick, the top of bull stick rotates with the side of connecting pipe inner wall to be connected, the fixed cover in top of bull stick side has third bevel gear, the side meshing of third bevel gear has fourth bevel gear, fourth bevel gear's top fixedly connected with transfer line, the top of transfer line rotates with the side of connecting pipe inner wall to be connected, the bottom of connecting pipe extends to fourth bevel gear's bottom and fixed cover has connect rubber helical blade, rubber helical blade's side overlap joint has the filter screen, the side of filter screen and the inner wall fixed connection of connecting pipe.

Preferably, the right end of the inner wall of the connecting pipe is filled with an activated carbon filter, the side face of the connecting pipe is clamped with a collecting box, and a calcium hydroxide solution is added into the collecting box.

Preferably, the included angle between the central axis of the connecting pipe and the central axis of the transmission rod is 70 degrees, and the included angle between the connecting pipe and the ground is 60 degrees.

Preferably, the number of the air suction fan and the number of the scraping plates are three, and the side surfaces of the scraping plates are bonded with bristles.

Preferably, the side face of the double-shaft motor is fixedly connected with a fixing rod, and two ends of the fixing rod are fixedly connected with the side face of the inner wall of the connecting pipe.

Preferably, the top end of the transmission rod is fixedly sleeved with a bearing, and the outer side of the bearing is fixedly connected with the inner wall of the connecting pipe.

Preferably, the right side of laboratory main part inner wall is provided with the dust screen.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, when the double-shaft motor and the air suction fan are matched for exhausting, the inner wall of the connecting pipe is brushed by the scraper, so that the possibility that dust is adhered to the inner wall of the connecting pipe is reduced, the diameter of the inner wall of the connecting pipe is ensured, the efficiency of the device for exhausting gas in a laboratory main body is further ensured, the cleaning frequency of the connecting pipe by a user is reduced, and then the dust brushed by the scraper is filtered by the filter screen, so that the practicability is better.

According to the utility model, the rotation shaft at the right end of the double-shaft motor rotates to drive the first bevel gear to rotate, the second bevel gear is driven to be matched with the third bevel gear to drive the fourth bevel gear to rotate, the fourth bevel gear is driven to drive the transmission rod and the rubber helical blade to rotate simultaneously, dust on the filter screen is scraped into the collection box, the possibility of blockage of the filter screen is reduced, and then the discharged gas is filtered through the activated carbon filter at the right end of the inner wall of the connecting pipe, so that the cleanness of the discharged gas is ensured.

Drawings

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

FIG. 2 is a cross-sectional view of a three-dimensional structure of the present invention;

fig. 3 is an enlarged view of the structure a in fig. 2 according to the present invention.

In the figure: 1. a laboratory body; 2. an air intake duct; 3. a connecting pipe; 4. a double-shaft motor; 5. an air suction fan; 6. a squeegee; 7. a first bevel gear; 8. a second bevel gear; 9. a rotating rod; 10. a third bevel gear; 11. a fourth bevel gear; 12. a transmission rod; 13. a rubber helical blade; 14. filtering with a screen; 15. and a collection box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a laboratory indoor air exchange device comprises a laboratory main body 1, wherein an air suction pipe 2 is fixedly inserted and connected to the left side of the inner wall of the laboratory main body 1, one end, away from the laboratory main body 1, of the air suction pipe 2 is fixedly connected with a connecting pipe 3, the side surface of the inner wall of the connecting pipe 3 is fixedly connected with a double-shaft motor 4, and two ends of the middle part of the side surface of a rotating shaft at the left end of the double-shaft motor 4 are respectively and fixedly connected with an air suction fan 5 and a scraper 6;

the fixed cover in right-hand member of the axis of rotation of biax motor 4 has been connected with first bevel gear 7, the side meshing of first bevel gear 7 has second bevel gear 8, the fixed peg graft of terminal surface of second bevel gear 8 has bull stick 9, the top of bull stick 9 rotates with the side of connecting pipe 3 inner wall to be connected, the top of bull stick 9 side is fixed to have cup jointed third bevel gear 10, the side meshing of third bevel gear 10 has fourth bevel gear 11, the top fixedly connected with transfer line 12 of fourth bevel gear 11, the top of transfer line 12 rotates with the side of connecting pipe 3 inner walls to be connected, the bottom of transfer line 12 extends to the bottom of fourth bevel gear 11 and fixed cover has been connected with rubber helical blade 13, the side overlap joint of rubber helical blade 13 has filter screen 14, the side of filter screen 14 and the inner wall fixed connection of connecting pipe 3.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the right end of the inner wall of the connecting pipe 3 is filled with an activated carbon filter, the side surface of the connecting pipe 3 is clamped with the collecting box 15, and the inside of the collecting box 15 is added with a calcium hydroxide solution, so that the acidic substances contained in the dust are neutralized by the calcium hydroxide solution, and the dust is conveniently adsorbed.

In this embodiment, as shown in fig. 1, 2 and 3, an included angle between the connecting pipe 3 and the central axis of the driving rod 12 is 70 °, and an included angle between the connecting pipe 3 and the ground is 60 °, so that dust on the inner wall of the inclined connecting pipe 3 can be scraped off by rotating the scraper 6, and then the dust is scraped off into the collecting box 15 by the rubber helical blade 13 on the side of the driving rod 12.

In this embodiment, as shown in fig. 3, the number of the suction fan 5 and the number of the scraper 6 are three, and the brush hairs are adhered to the side surface of the scraper 6, so as to ensure the brushing effect of the scraper 6 on the inner wall of the connecting pipe 3.

In this embodiment, as shown in fig. 1, 2 and 3, the side surface of the dual-shaft motor 4 is fixedly connected with a fixing rod, and both ends of the fixing rod are fixedly connected with the side surface of the inner wall of the connecting pipe 3, so as to ensure stable operation of the dual-shaft motor 4.

In this embodiment, as shown in fig. 1, 2 and 3, a bearing is fixedly sleeved on the top end of the transmission rod 12, and the outer side of the bearing is fixedly connected with the inner wall of the connection pipe 3, so that the friction between the transmission rod 12 and the connection pipe 3 when rotating is reduced by the bearing.

In this embodiment, as shown in fig. 1, the right side of laboratory main body 1 inner wall is provided with the dust screen, drives through double-shaft motor 4 and inhales fan 5 and rotate, with the gas outgoing in laboratory main body 1 to make laboratory main body 1 inside produce the negative pressure, then filter the air that gets into in laboratory main body 1 through the dust screen.

The use method and the advantages of the utility model are as follows: when the laboratory indoor air exchange device is used, the working process is as follows:

as shown in fig. 1, 2 and 3, the double-shaft motor 4 drives the air suction fan 5 to rotate, so as to exhaust the gas in the laboratory main body 1 and generate negative pressure inside the laboratory main body 1, then the air entering the laboratory main body 1 is filtered through the dust screen, when the double-shaft motor 4 and the air suction fan 5 are matched to exhaust, the inner wall of the connecting pipe 3 is brushed through the scraper 6, the possibility that dust is adhered to the inner wall of the connecting pipe 3 is reduced, the diameter of the inner wall of the connecting pipe 3 is ensured, the cleaning frequency of the connecting pipe 3 by a user is reduced, and then the dust brushed off by the scraper 6 is filtered through the filter screen 14;

then the axis of rotation through the right-hand member of biax motor 4 rotates and drives first bevel gear 7 and rotate, makes second bevel gear 8 cooperate third bevel gear 10 to drive fourth bevel gear 11 and rotate, and then makes fourth bevel gear 11 drive transfer line 12 and rubber helical blade 13 rotate simultaneously, scrapes the dust on the filter screen 14 and falls into collection box 15 in, reduces the possibility that filter screen 14 blockked up, then filters the combustion gas through the active carbon filter of connecting pipe 3 inner wall right-hand member.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an indoor air exchange device of laboratory, includes laboratory subject, its characterized in that: an air suction pipe is fixedly inserted into the left side of the inner wall of the laboratory main body in a plugging manner, one end of the air suction pipe, which is far away from the laboratory main body, is fixedly connected with a connecting pipe, the side surface of the inner wall of the connecting pipe is fixedly connected with a double-shaft motor, and two ends of the middle part of the side surface of a rotating shaft at the left end of the double-shaft motor are respectively and fixedly connected with an air suction fan and a scraper;

the fixed cover of right-hand member of biax motor axis of rotation has first bevel gear, the side meshing of first bevel gear has second bevel gear, the fixed grafting of terminal surface of second bevel gear has the bull stick, the top of bull stick rotates with the side of connecting pipe inner wall to be connected, the fixed cover in top of bull stick side has third bevel gear, the side meshing of third bevel gear has fourth bevel gear, fourth bevel gear's top fixedly connected with transfer line, the top of transfer line rotates with the side of connecting pipe inner wall to be connected, the bottom of transfer line extends to fourth bevel gear's bottom and fixed cover has connect rubber helical blade, rubber helical blade's side overlap joint has the filter screen, the side of filter screen and the inner wall fixed connection of connecting pipe.

2. A laboratory air exchange device according to claim 1, wherein: the right-hand member of connecting pipe inner wall is filled with the active carbon filter, the side joint of connecting pipe has the collecting box, and the inside of collecting box adds has calcium hydrate solution.

3. A laboratory air exchange device according to claim 1, wherein: the included angle between the central axes of the connecting pipe and the transmission rod is 70 degrees, and the included angle between the connecting pipe and the ground is 60 degrees.

4. A laboratory air exchange device according to claim 1, wherein: the number of the air suction fans and the number of the scraper blades are three, and the side surfaces of the scraper blades are bonded with bristles.

5. A laboratory air exchange device according to claim 1, wherein: the side fixedly connected with dead lever of biax motor, and the both ends of dead lever all with the side fixed connection of connecting pipe inner wall.

6. A laboratory air exchange device according to claim 1, wherein: the top end of the transmission rod is fixedly sleeved with a bearing, and the outer side of the bearing is fixedly connected with the inner wall of the connecting pipe.

7. A laboratory air exchange device according to claim 1, wherein: and a dust screen is arranged on the right side of the inner wall of the laboratory main body.