CN210690502U

CN210690502U - Special gas chromatograph for chemical laboratory

Info

Publication number: CN210690502U
Application number: CN201921246649.6U
Authority: CN
Inventors: 王样
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-03
Filing date: 2019-08-03
Publication date: 2020-06-05
Anticipated expiration: 2029-08-03

Abstract

The utility model discloses a special gas chromatograph for chemical laboratory, which comprises a display screen and a sample feeding device, wherein the display screen is fixed on a machine body through bolts, the lower side of the display screen is an operation button, meanwhile, heat dissipation holes are arranged at the lower side of the operation button, a switch is arranged at the right side of the heat dissipation holes, a base is welded with the machine body, a power line is connected with a commercial power plug board through a socket, the upper side of the power line is a pressure gauge, a furnace door is arranged on the surface of the machine body through hinges, a handle is fixed on the furnace door through bolts, and a hearth is arranged inside the; the sampling device is internally provided with a cavity, the heating device is arranged in the cavity, the push plate and the piston are integrally formed, and the piston is matched with the sample groove in size. This dedicated gas chromatograph in chemistry experiment room, locating lever and buffer tank play spacing and the effect of direction, press the push pedal simultaneously, further prevent that the pinhead of grafting in the intercommunication pipe inside from taking place bending, rupture.

Description

Special gas chromatograph for chemical laboratory

Technical Field

The utility model relates to a chemistry experiment equipment science and technology technical field specifically is a dedicated gas chromatograph in chemistry experiment room.

Background

Chromatograph, for carrying out chromatographic fractionation device of using, including sampling system, detecting system, record and data processing system, temperature control system and mobile phase control system etc, modern chromatograph has characteristics such as stability, sensitivity, versatility and degree of automation height, there are gas chromatograph, liquid chromatograph and gel chromatograph, these chromatographs are widely used for chemical product, the analysis of certain content of macromolecular material, gel chromatograph can also survey macromolecular material's molecular weight and its distribution, common chromatograph is at the in-process of appearance, because the introduction port is fixed unstable, cause the fracture of syringe needle, crooked or damage easily, influence defects such as appearance of advancing.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model provides a technical problem lie in overcoming prior art's common chromatograph at the in-process of advancing the appearance, because the introduction port is fixed unstable, causes the discount, the bending or the damage of syringe needle easily, and the influence condition of advancing the appearance takes place the scheduling defect, provides a dedicated gas chromatograph in chemistry experiment room. Buffer slot, locating lever and communicating pipe have and prevent to peg graft at the inside syringe needle of communicating pipe and take place the bending, the rupture, avoid the chromatographic column to admit air and improve the characteristics such as life of chromatographic column.

2. Technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a special gas chromatograph for a chemical laboratory comprises a display screen and a sample injection device, wherein the display screen is fixed on a machine body through bolts, an operation button is arranged on the lower side of the display screen, heat dissipation holes are formed in the lower side of the operation button, a switch is arranged on the right side of each heat dissipation hole, a base is welded with the machine body, a power line is connected with a mains supply plug board through a socket, a pressure gauge is arranged on the upper side of the power line, a furnace door is installed on the surface of the machine body through a hinge, a handle is fixed on the furnace door through bolts, and a hearth; the inside cavity of having seted up of sampling device, and heating device installs in the inside of cavity, push pedal and piston integrated into one piece, and the size looks adaptation of piston and sample groove, the milipore filter is installed in the inside of sample groove, and the locating lever welding is in sampling device's bottom, and the locating lever sets up to two sets of, and the dashpot welding is on the organism, and the inside welding of dashpot has the spring, and the size of dashpot and the size looks adaptation of locating lever.

Foretell dedicated gas chromatograph in chemistry experiment room, wherein, sample cell and syringe needle integrated into one piece, and syringe needle and the size looks adaptation of communicating pipe, communicating pipe bottom and first branch pipe link together, first branch pipe and second branch pipe integrated into one piece, and install first micro valve on the first branch pipe.

The gas chromatograph special for the chemical laboratory is characterized in that the second branch pipe is provided with a first micro valve, the first branch pipe is communicated with the sample inlet through a second micro valve, and the second branch pipe is communicated with the liquid storage tank through the first micro valve.

In the above-mentioned gas chromatograph dedicated for chemical laboratory, the piston is inserted into the sample tank, and the axis of the piston coincides with the axis of the sample tank.

The dedicated gas chromatograph in foretell chemistry experiment room, wherein, the piston is the conical device of being made by the silicon rubber material, and heating device annular winding and the outside of sample cell, heating device's model is FYYX2017070403A, and solution is convenient for subsequent separation processing after the heating.

Foretell dedicated gas chromatograph in chemistry experiment room, wherein, the locating lever is pegged graft in the inside of dashpot, and the syringe needle is pegged graft in the inside of communicating pipe, and two locating levers are pegged graft in the inside of dashpot, and locating lever and dashpot play spacing and guide's effect, and the inside spring assembly of dashpot can play the effect that the damping was cushioned, prevents to peg graft and takes place crooked, the rupture at the inside syringe needle of intercommunication pipe.

The special gas chromatograph for the chemical laboratory is characterized in that the needle is communicated with the liquid storage tank through the communicating pipe, the first branch pipe, the second branch pipe and the first micro valve.

Foretell dedicated gas chromatograph in chemistry experiment room, wherein, communicating pipe passes the organism setting, and the welding of communicating pipe on the organism, and the syringe needle is linked together through communicating pipe and first branch pipe, and the packing has sealing rubber pad inside communicating pipe, and the syringe needle is pegged graft in the inside rubber ring of communicating pipe, guarantees that communicating pipe inside and outside air separation come, avoids the system to admit air.

The gas chromatograph special for the chemical laboratory is characterized in that the sample inlet is communicated with the chromatographic column, and the models of the second micro valve and the first micro valve are uniform MFZ 0101M-180.

3. Advantageous effects

To sum up, the beneficial effects of the utility model are that:

(1) the sealing rubber pad is filled in the communicating pipe, and the needle is inserted in the rubber ring in the communicating pipe, so that the inside of the communicating pipe is prevented from being separated from the outside air, and the air intake of the system is avoided;

(2) the two positioning rods are inserted in the buffer groove, the positioning rods and the buffer groove have the limiting and guiding functions, and the spring device in the buffer groove can play a role in damping and buffering, so that the needle heads inserted in the communicating pipe are prevented from being bent and broken; the ultrafiltration membrane can filter large-particle substances in the solution, so that impurities are prevented from entering the interior of the chromatographic column and blocking the chromatographic column;

(3) the second micro valve is closed, the first micro valve is opened, the push plate is held by hands, the piston below the push plate is pressed downwards, the air inside the communicating pipe, the first branch pipe and the second branch pipe is pressed into the liquid storage tank, the air inside the pipeline is emptied, and air inflow of the chromatographic column is avoided.

Drawings

Fig. 1 is a front view of a gas chromatograph dedicated for a chemical laboratory according to the present invention;

fig. 2 is a schematic structural diagram of a sample introduction device of a gas chromatograph specially used for a chemical laboratory;

fig. 3 is an appearance schematic diagram of the gas chromatograph dedicated for the chemical laboratory of the present invention.

In the figure: 1. organism, 2, display screen, 3, furnace gate, 4, handle, 5, operation button, 6, louvre, 7, switch, 8, base, 9, the power cord, 10, the manometer, 11, furnace, 12, sampling device, 13, the push pedal, 14, the piston, 15, heating device, 16, the sample cell, 17, the milipore filter, 18, the cavity, 19, the locating lever, 20, the syringe needle, 21, the buffer tank, 22, communicating pipe, 23, first branch pipe, 24, the second branch pipe, 25, first micro valve, 26, the second micro valve, 27, the reservoir, 28, the introduction port.

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 to fig. 3, the present invention provides a technical solution: a special gas chromatograph for a chemical laboratory comprises a display screen 2 and a sample introduction device 12, wherein the display screen 2 is fixed on a machine body 1 through bolts, an operation key 5 is arranged on the lower side of the display screen 2, a heat dissipation hole 6 is formed in the lower side of the operation key 5, a switch 7 is arranged on the right side of the heat dissipation hole 6, a base 8 is welded with the machine body 1, a power line 9 is connected with a commercial power plug board through a socket, a pressure gauge 10 is arranged on the upper side of the power line 9, a furnace door 3 is installed on the surface of the machine body 1 through a hinge, a handle 4 is fixed on the furnace door 3 through bolts, and a hearth; the cavity 18 is opened in the sample feeding device 12, the heating device 15 is installed in the cavity 18, the push plate 13 and the piston 14 are integrally formed, the piston 14 is matched with the sample slot 16 in size, the piston 14 is inserted in the sample slot 16, the axes of the piston 14 and the sample slot 16 are coincident, the piston 14 is a conical device made of silicon rubber, the heating device 15 is annularly wound on the outer side of the sample slot 16, the model of the heating device 15 is FYYX2017070403A, the ultrafiltration membrane 17 is installed in the sample slot 16, the positioning rod 19 is welded at the bottom of the sample feeding device 12, the positioning rods 19 are arranged in two groups, the buffer slot 21 is welded on the machine body 1, a spring is welded in the buffer slot 21, the size of the buffer slot 21 is matched with the size of the positioning rod 19, the positioning rod 19 is inserted in the buffer slot 21, the needle 20 is inserted in the communicating pipe 22, the sample slot 16 and the needle 20 are integrally formed, the needle 20 is matched with the communicating pipe 22 in size, the bottom of the communicating pipe 22 is connected with the first branch pipe 23, the needle 20 is communicated with the liquid storage tank 27 through the communicating pipe 22, the first branch pipe 23, the second branch pipe 24 and the first micro valve 25, the communicating pipe 22 penetrates through the machine body 1 and is welded on the machine body 1, the needle 20 is communicated with the first branch pipe 23 through the communicating pipe 22, the first branch pipe 23 and the second branch pipe 24 are integrally formed, the first micro valve 25 is installed on the first branch pipe 23, the first micro valve 25 is installed on the second branch pipe 24, the first branch pipe 23 is communicated with the sample inlet 28 through the second micro valve 26, the second branch pipe 24 is communicated with the liquid storage tank 27 through the first micro valve 25, the sample inlet 28 is communicated with the chromatographic column, and the models of the second micro valve 26 and the first micro valve 25 are uniform MFZ 0101-0101M-180.

Referring to fig. 1 to 3, a sealing rubber pad is filled in the communicating tube 22, and the needle 20 is inserted into the rubber pad in the communicating tube 22, so as to ensure that the inside of the communicating tube 22 is isolated from the outside air, thereby preventing the system from air intake and affecting the analysis result of the device; the ultrafiltration membrane 17 can filter large-particle substances in the solution, so that impurities are prevented from entering the chromatographic column and blocking the chromatographic column;

referring to fig. 1 to 3, two positioning rods 19 are inserted into the buffer tank 21, the positioning rods 19 and the buffer tank 21 have limiting and guiding functions, a spring device inside the buffer tank 21 can have a damping and buffering function, the liquid storage tank 27 can be taken out through the door, and the solution inside the liquid storage tank 27 can be recycled, so that the experiment cost is saved.

The working principle is as follows: when the special gas chromatograph for the chemical laboratory is used, the push plate 13 is pulled out from the sample injection device 12, then the liquid to be measured is injected into the sample tank 16, the piston 14 is inserted into the sample tank 16, the solution to be measured can be heated by the heating device 15 surrounding the outer side of the sample tank 16, after the solution is heated, the subsequent separation treatment is facilitated, the second micro valve 26 is closed, the first micro valve 25 is opened, the push plate 13 is held by hand, the piston 14 under the push plate 13 is pressed downwards, the air in the communication pipe 22, the first branch pipe 23 and the second branch pipe 24 is pressed into the liquid storage tank 27, then the first micro valve 25 is closed, the second micro valve 26 is opened, the solution to be measured enters the chromatographic column along with the second micro valve 26 and the sample injection port 28 for separation work, no air enters the chromatographic column, and therefore the working efficiency of the chromatograph is improved, also improve the degree of accuracy of chromatograph, two locating levers 19 are pegged graft in the inside of buffer slot 21, and locating lever 19 and buffer slot 21 play spacing and guide's effect, press push pedal 13, further prevent to peg graft and take place the bending at communicating inside syringe needle 20 of pipe 22, the rupture, this is exactly this whole process of the dedicated gas chromatograph work in chemistry experiment room.

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 dedicated gas chromatograph in chemistry experiment room, includes display screen (2) and sampling device (12), its characterized in that: the display screen (2) is fixed on the machine body (1) through bolts, the operation key (5) is arranged on the lower side of the display screen (2), the heat dissipation holes (6) are formed in the lower side of the operation key (5), the switch (7) is installed on the right side of the heat dissipation holes (6), the base (8) is welded with the machine body (1), the power line (9) is connected with a mains supply plug board through a socket, the pressure gauge (10) is arranged on the upper side of the power line (9), the furnace door (3) is installed on the surface of the machine body (1) through hinges, the handle (4) is fixed on the furnace door (3) through bolts, and a hearth (11) is formed in the machine body; cavity (18) have been seted up to sampling device (12) inside, and heating device (15) are installed in the inside of cavity (18), push pedal (13) and piston (14) integrated into one piece, and the size looks adaptation of piston (14) and sample cell (16), the inside at sample cell (16) is installed in milipore filter (17), locating lever (19) welding is in the bottom of sampling device (12), and locating lever (19) set up to two sets of, dashpot (21) welding is on organism (1), dashpot (21) internal weld has the spring, and the size of dashpot (21) and the size looks adaptation of locating lever (19).

2. The gas chromatograph of claim 1, wherein: the sample tank (16) and the needle (20) are integrally formed, the needle (20) is matched with the communicating pipe (22) in size, the bottom of the communicating pipe (22) is connected with the first branch pipe (23), the first branch pipe (23) and the second branch pipe (24) are integrally formed, and the first branch pipe (23) is provided with the first micro valve (25).

3. The gas chromatograph of claim 2, wherein: the second branch pipe (24) is provided with a first micro valve (25), the first branch pipe (23) is communicated with the sample inlet (28) through a second micro valve (26), and the second branch pipe (24) is communicated with the liquid storage tank (27) through the first micro valve (25).

4. The gas chromatograph of claim 3, wherein: the piston (14) is inserted in the sample groove (16), and the axis of the piston (14) is coincident with that of the sample groove (16).

5. The gas chromatograph of claim 4, wherein: the piston (14) is a conical device made of silicon rubber, and the heating device (15) is annularly wound on the outer side of the sample groove (16).

6. The gas chromatograph of claim 5, wherein: the type of the heating device (15) is FYYX 2017070403A.

7. The gas chromatograph of claim 6, wherein: the positioning rod (19) is inserted in the buffer groove (21), and the needle head (20) is inserted in the communicating pipe (22).

8. The gas chromatograph of claim 7, wherein: the needle (20) is communicated with the liquid storage tank (27) through a communicating pipe (22), a first branch pipe (23), a second branch pipe (24) and a first micro valve (25).

9. The gas chromatograph of claim 8, wherein: the communicating pipe (22) penetrates through the machine body (1), the communicating pipe (22) is welded on the machine body (1), and the needle head (20) is communicated with the first branch pipe (23) through the communicating pipe (22).

10. The gas chromatograph of claim 9, wherein: the sample inlet (28) is communicated with the chromatographic column, and the models of the second micro valve (26) and the first micro valve (25) are uniform MFZ 0101M-180.