CN215768415U

CN215768415U - Chromatographic column box air duct capable of improving cooling efficiency

Info

Publication number: CN215768415U
Application number: CN202122037151.2U
Authority: CN
Inventors: 印震峰; 杨明晶; 滕根发
Original assignee: SHANGHAI TECHCOMP INSTRUMENT Ltd
Current assignee: SHANGHAI TECHCOMP INSTRUMENT Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-08
Anticipated expiration: 2031-08-27

Abstract

The utility model discloses a chromatographic column box air duct for improving cooling efficiency, which comprises: the air duct is arranged at the back of the column box, an air outlet is formed in the back of the air duct, an air inlet is formed in the side face of the air duct close to the edge, and the air outlet direction of the air outlet and the air inlet direction of the air inlet form an included angle of 90 degrees; the utility model discloses a fan, including air intake department, safety cover, fixed plate and fixed ring, air intake department installs the fan, the outside of fan adopts bolt fixed mounting to have the safety cover, the safety cover includes fixed plate and solid fixed ring, the fixed plate is square structure and the surface is close to the edge and offers the fixed orifices respectively, the ventilation hole has been seted up at the surperficial middle part of fixed plate, just gu fixed ring fixes in ventilation hole department. The utility model improves the cooling air duct of the gas chromatograph, realizes the separation of cold air and hot air, reduces and adds an air supply device at the cold air inlet, and greatly improves the cooling efficiency. The cooling time is reduced to below half.

Description

Chromatographic column box air duct capable of improving cooling efficiency

Technical Field

The utility model relates to the technical field of gas chromatograph instruments, in particular to a chromatographic column box air duct capable of improving cooling efficiency.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by using a chromatographic separation technology and a detection technology. The gas chromatograph is widely applied to the fields of petrochemical industry, food safety, environment, medicine and the like, and the stability of the instrument influences the working efficiency of operators.

At present, the conventional chromatographic instrument cools from 400 ℃ to 50 ℃ for 10 minutes, so that the cooling time is too long, too much analysis time of a user is occupied, and the working efficiency is influenced. For this reason, a new scheme needs to be designed to give improvements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a chromatographic column box air duct capable of improving cooling efficiency, and solves the problems that the conventional chromatographic instrument is cooled from 400 ℃ to 50 ℃ for 10 minutes, the cooling time is too long, too much analysis time is occupied by a user, and the working efficiency is influenced, and the actual use requirements are met.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an improve chromatographic column case wind channel of cooling efficiency, includes: the air duct is arranged at the back of the column box, an air outlet is formed in the back of the air duct, an air inlet is formed in the side face of the air duct close to the edge, and the air outlet direction of the air outlet and the air inlet direction of the air inlet form an included angle of 90 degrees; the utility model discloses a fan, including air intake department, safety cover, fixed plate and fixed ring, air intake department installs the fan, the outside of fan adopts bolt fixed mounting to have the safety cover, the safety cover includes fixed plate and solid fixed ring, the fixed plate is square structure and the surface is close to the edge and offers the fixed orifices respectively, the ventilation hole has been seted up at the surperficial middle part of fixed plate, just gu fixed ring fixes in ventilation hole department.

As a preferred embodiment of the utility model, the inner wall of the fixing ring is in a step shape, and is movably connected with a first-stage filter plate and a second-stage filter plate inside, and through holes are formed in the surfaces of the first-stage filter plate and the second-stage filter plate.

As a preferred embodiment of the present invention, a fixing column is disposed in the middle of the ventilation hole, an end of the fixing column extends into the fixing ring, a threaded hole is formed in the end of the fixing column, a threaded structure is disposed on an outer wall of the fixing column and near the end, a bolt is mounted in the through hole of the first-stage filter plate and connected to the threaded hole through the bolt, and an internal thread is disposed inside the through hole of the second-stage filter plate and connected to the fixing column through the internal thread.

As a preferred embodiment of the present invention, five fixing rods distributed in an annular shape are fixed on the outer wall of the fixing column, and the ends of the fixing rods are fixedly connected with the inner wall of the ventilation hole.

In a preferred embodiment of the present invention, side plates are respectively disposed at surface edges of the fixing plates, and the side plates extend to an outer side of the fan.

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

(1) the utility model improves the cooling air duct of the gas chromatograph, realizes the separation of cold air and hot air, reduces and adds an air supply device at the cold air inlet, and greatly improves the cooling efficiency. The cooling time is reduced to below half.

(2) According to the fan column box, the protective cover is arranged on the outer side of the fan to protect the fan column box, so that impurities in outside air are prevented from entering the fan column box, workers are separated from the fan to achieve a protection effect, two stages of filter plates are arranged in the protective cover, the machine does not need to be stopped when the filter plates on the outer side are cleaned, and the normal work of the machine is guaranteed.

Drawings

FIG. 1 is a rear view structural diagram of an air duct of a chromatographic column box for improving cooling efficiency according to the present invention;

FIG. 2 is a view of the connection structure of the fan and the protection cover according to the present invention;

fig. 3 is a structural view of the protective cover according to the present invention.

In the figure, 1, a column box; 2. an air duct; 3. a fan; 4. an air outlet; 5. a protective cover; 6. a first-stage filter plate; 7. a secondary filter plate; 8. a bolt; 9. a through hole; 10. fixing a column; 11. a side plate; 12. fixing the rod; 13. a fixing plate; 14. a fixing ring; 15. a vent hole.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an improve chromatographic column case wind channel of cooling efficiency, includes: column box 1 and wind channel 2, wind channel 2 install at column box 1's back and wind channel 2's back is provided with

air exit

4, and 2 sides in wind channel are close to the edge and are provided with the air intake, and the direction of airing exhaust of air exit 4 and the air inlet direction of air intake are 90 contained angles, and the air-out direction is backward, and when the instrument cooling, hot-blast row is to the instrument rear. The air inlet faces to the left, and cold air on the left side of the instrument is sucked into the instrument by the air supply device to rapidly cool the column box 1; air intake department installs fan 3, the outside of fan 3 adopts bolt 8 fixed mounting to have safety cover 5, safety cover 5 includes fixed plate 13 and solid fixed ring 14, fixed plate 13 is square structure and the surface is close to the edge and sets up the fixed orifices respectively, ventilation hole 15 has been seted up at the surperficial middle part of fixed plate 13, and solid fixed ring 14 fixes in ventilation hole 15 department, the ventilation design of 90 degrees has been adopted, cold and hot air mass has obtained fine separation, the hot-blast possibility of being taken into the instrument of being greatly eliminated. Especially, an air supply device is added at an air inlet, the original air inlet mode is changed, cold air is not sucked by the negative pressure generated by stirring the fan 3 in the column box 1 any more, but the axial flow fan 3 is started when the instrument is cooled, the fan 3 actively supplies cold air to the column box 1, and the cooling efficiency is obviously improved. In addition fan 3 has increased the protection screen panel, has effectively avoided the danger that operating personnel touched on the one hand, and on the other hand has also avoided the foreign matter to be inhaled post case 1, causes the damage of work component part in the post case 1.

Further improve ground, the inner wall of solid fixed ring 14 is echelonment and inside swing joint has one-level filter 6 and second grade filter 7, and through-hole 9 has all been seted up on the surface of one-level filter 6 and second grade filter 7, and the two-stage is filtered, and the filter effect is better.

Further improve ground, the middle part in ventilation hole 15 is provided with fixed column 10, the tip of fixed column 10 extends to in solid fixed ring 14 and the tip of fixed column 10 sets up threaded hole, the outer wall of fixed column 10 and be provided with the helicitic texture near the tip, through-hole 9 department of one-level filter 6 installs bolt 8 and is connected with the screw hole through bolt 8, the inside internal thread that is provided with of through-hole 9 of second grade filter 7 just passes through internal thread and fixed column 10 threaded connection, second grade filter 7 passes through the internal thread and fixed column 10 lug connection of through-hole 9, second grade filter 7 outside is arranged in to one-level filter 6, be connected with fixed column 10 through bolt 8, one-level filter 6 needs frequent clearance, dismantle it during the clearance, second grade filter 7 need not the operation, second grade filter 7 continues to filter the air inlet simultaneously, need not to shut down the operation.

Further improved, be fixed with five dead levers 12 that are annular distribution on the outer wall of fixed column 10, the terminal and the 15 inner walls fixed connection in ventilation hole of dead lever 12 fix fixed column 10 through dead lever 12.

Specifically, the surface edges of the fixing plate 13 are respectively provided with a side plate 11, the side plates 11 extend to the outer side of the fan 3, and the four side plates 11 wrap the edges of the fan 3, so that the connection tightness and stability of the fan 3 and the protective cover 5 are improved.

When the air filter is used, the fan 3 on the side wall of the column box 1 is started to bring outside air into the column box 1 from the air inlet, the air is filtered through the protective cover 5, and hot air in the column box 1 is discharged backwards through the air outlet. When needing to change or dismantle clearance with one-level filter 6, dismantle the back with bolt 8 and take off one-level filter 6, the clearance or take out new filter after install again can, need not to shut down the operation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an improve chromatographic column case wind channel of cooling efficiency, includes: post case (1) and wind channel (2), its characterized in that: the air duct (2) is installed on the back of the column box (1), an air outlet (4) is formed in the back of the air duct (2), an air inlet is formed in the side face, close to the edge, of the air duct (2), and the air outlet direction of the air outlet (4) and the air inlet direction of the air inlet form an included angle of 90 degrees; air intake department installs fan (3), the outside of fan (3) adopts bolt (8) fixed mounting to have safety cover (5), safety cover (5) are including fixed plate (13) and solid fixed ring (14), fixed plate (13) are square structure and the surface is close to the edge and offers the fixed orifices respectively, ventilation hole (15) have been seted up at the surface middle part of fixed plate (13), just gu fixed ring (14) are fixed in ventilation hole (15) department.

2. The chromatographic column box air duct capable of improving the cooling efficiency as claimed in claim 1, wherein: the inner wall of the fixing ring (14) is in a step shape, the inner part of the fixing ring is movably connected with a first-stage filter plate (6) and a second-stage filter plate (7), and through holes (9) are formed in the surfaces of the first-stage filter plate (6) and the second-stage filter plate (7).

3. The chromatographic column box air duct capable of improving the cooling efficiency as claimed in claim 2, wherein: the middle part of the ventilation hole (15) is provided with a fixing column (10), the end part of the fixing column (10) extends into the fixing ring (14) and the end part of the fixing column (10) is provided with a threaded hole, the outer wall of the fixing column (10) is provided with a threaded structure close to the end part, a bolt (8) is installed at a through hole (9) of the first-stage filter plate (6) and is connected with the threaded hole through the bolt (8), and an internal thread is arranged inside the through hole (9) of the second-stage filter plate (7) and is in threaded connection with the fixing column (10) through the internal thread.

4. The chromatographic column box air duct capable of improving the cooling efficiency as claimed in claim 3, wherein: five fixing rods (12) distributed in an annular shape are fixed on the outer wall of the fixing column (10), and the tail ends of the fixing rods (12) are fixedly connected with the inner wall of the ventilation hole (15).

5. The chromatographic column box air duct capable of improving the cooling efficiency as claimed in claim 1, wherein: the edge of the surface of the fixing plate (13) is provided with a side plate (11), and the side plate (11) extends to the outer side of the fan (3).