CN216816573U

CN216816573U - Extensible post-column derivation device

Info

Publication number: CN216816573U
Application number: CN202220209203.1U
Authority: CN
Inventors: 邢岐岐; 邸鑫斐; 赵桂茂
Original assignee: QINGDAO SHENGHAN CHROMATOGRAPHY TECHNOLOGY CO LTD
Current assignee: QINGDAO SHENGHAN CHROMATOGRAPHY TECHNOLOGY CO LTD
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-24
Anticipated expiration: 2032-01-25

Abstract

The utility model relates to the field of liquid chromatography instruments, in particular to an extensible post-column derivatization device which comprises an outer cover, two ports, a hearth, supporting tubes and reaction tubes, wherein the outer cover and the hearth are enclosed to form a closed cavity, heating wires for heating the closed cavity are arranged in the side wall of the hearth, the supporting tubes and the reaction tubes are arranged in the closed cavity, the supporting tubes are of a hollow structure, the reaction tubes are sequentially wound outside the supporting tubes, two ends of each reaction tube are respectively connected with the two ports, and the two ports are arranged on the outer cover. The utility model adopts the supporting tube with a hollow structure to replace the traditional solid supporting tube, effectively shortens the time required by preheating, improves the detection efficiency, reduces the weight and lowers the cost; the furnace cover made of aluminum silicate is adopted to carry out heat insulation treatment on the hearth, so that heat loss is effectively avoided, the temperature uniformity in the hearth is kept, and the accuracy of a detection result is ensured; adopt reference column and connecting plate isotructure, can expand the length of reaction tube as required, the suitability of reinforcing equipment.

Description

Extensible post-column derivation device

Technical Field

The utility model relates to the field of liquid chromatography instruments, in particular to an extensible post-column derivatization device.

Background

In order to expand the application range of ion chromatography and improve the detection sensitivity, a derivatization reaction is often used for performing supplementary detection before and after ion chromatography separation, and the derivatization reaction is divided into a pre-column derivatization type and a post-column derivatization type, wherein the post-column reaction is performed for improving the detection sensitivity. The current post-column derivatization device has the following problems: (1) the supporting columns used for heating are heavy, high in cost and low in preheating speed, and detection efficiency is affected; (2) the number of the supporting columns is fixed, so that the device cannot meet various processing requirements; (3) the heat insulation effect is poor, the temperature in the hearth cannot be stabilized at the preset temperature, and the accuracy of the detection result is influenced; (4) the reaction temperature is low due to the limitation of the temperature resistance of the material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides an extensible post-column derivation device, which adopts the following technical scheme:

the utility model provides an extensible post-column derivation device, includes enclosing cover, two openings, furnace, stay tube and reaction tube, the enclosing cover encloses synthetic closed cavity with furnace, sets up the heater strip that is used for heating closed cavity in the furnace lateral wall, and stay tube and reaction tube setting are in closed cavity, and the quantity of stay tube is on the flange including a plurality of and parallel arrangement, and the stay tube is hollow structure, and the reaction tube is around establishing outside each stay tube in proper order, and two openings are connected respectively at the reaction tube both ends, and the two openings setting is on the enclosing cover.

On the basis of the scheme, the supporting tube is arranged on the inner flange in the hearth, the furnace cover is arranged between the inner flange and the outer cover and is made of aluminum silicate, connectors communicated with the two ports and the reaction tube are arranged in the furnace cover respectively, the outer peripheral surface of the furnace cover is tightly attached to the inner peripheral surface of the hearth, and the end surface of one side, close to the outer cover, of the furnace cover is not in contact with the outer cover.

Preferably, two ends of the supporting tube are respectively connected with the inner flange, the inner flange is provided with positioning columns, and the positioning columns are inserted at two ends of the supporting tube; and the inner flange is provided with a connecting bolt, and the connecting bolt sequentially penetrates through the inner flange and the furnace cover and is fastened through a connecting nut.

On the basis of the scheme, the positioning column is internally provided with a connecting through hole, a fastening bolt is arranged in the connecting through hole, and a fastening nut matched with the fastening bolt is arranged on the inner flange or in the connecting through hole of the positioning column on the other side of the inner flange.

Preferably, the inner flange is provided with a threading hole for the reaction tube to pass through.

Preferably, an outer flange is arranged between the outer peripheral surface of the furnace cover and the inner side wall of the outer cover, and the outer peripheral surface of the furnace cover is not in contact with the inner side wall of the outer cover.

Preferably, a handle is arranged on the outer cover, and the handle is fastened on the outer cover through a support.

Preferably, a temperature sensor is arranged in the hearth.

The utility model has the beneficial effects that: the supporting tube with a hollow structure is adopted to replace the traditional solid supporting tube, so that the time required by preheating is effectively shortened, the detection efficiency is improved, the weight is reduced, and the cost is reduced; the positioning column, the connecting plate and other structures are adopted, so that the length of the reaction tube can be expanded according to the use requirement, and the applicability of the equipment is enhanced; the furnace cover made of aluminum silicate is adopted to carry out heat insulation treatment on the furnace hearth, so that heat loss is effectively avoided, the temperature in the furnace hearth is kept stable, the accuracy of a detection result is ensured, meanwhile, the aluminum silicate is high in temperature resistance (over 1000 ℃), the post-column derivation heating requirement of high temperature can be met, and the post-column derivation temperature range is enlarged.

Drawings

FIG. 1: the utility model has a cross section of the internal structure;

FIG. 2: another angle section of the present invention;

FIG. 3: the utility model is a schematic diagram of an appearance structure.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 3, an expandable post-column derivative device comprises an outer cover 11, a two-way opening 12, a hearth 41, a support tube 31 and a reaction tube 32, wherein the outer cover 11 and the hearth 41 enclose a closed chamber, a handle 13 is arranged on the outer cover 11, and the handle 13 is fastened on the outer cover 11 through a support 14. Heating wires 42 for heating and closing the chamber are arranged in the side wall of the hearth 41, and the heating wires 42 are connected with the heating section 43 and are electrified for heating. A temperature sensor 44 is arranged in the furnace 41. The supporting tubes 31 and the reaction tubes 32 are arranged in the closed chamber, the number of the supporting tubes 31 is multiple, the supporting tubes 31 are arranged on the inner flange 24 in parallel, and the reaction tubes 32 are arranged outside the supporting tubes 31 in sequence. The inner flange 24 is provided with a threading hole 35 for the reaction tube 32 to pass through, the support tube 31 is of a hollow structure, two ends of the reaction tube 32 are respectively connected with a two-way port 12, and the two-way port 12 is arranged on the outer cover 11. The liquid to be measured flows into the reaction tube 32 through the two-port 12 and is discharged through the other two-port 12, and the support tube 31 absorbs the heat in the furnace 41 to increase the temperature, thereby heating the liquid in the reaction tube 32. The hollow structure of the support tube 31 can effectively shorten the time taken for temperature rise, and can greatly reduce the cost and weight of materials.

Since the post-column derivatization device is a high-precision detection device, the temperature has a large influence on the accuracy of the detection result, so that heat loss needs to be prevented, and the temperature needs to be kept accurate and stable. The furnace cover 21 is arranged between the inner flange 24 and the outer cover 11, the furnace cover 21 is made of aluminum silicate with low heat conductivity, the connecting port 22 communicated with the two-way port 12 and the reaction tube 32 is arranged in the furnace cover 21, the outer peripheral surface of the furnace cover 21 is tightly attached to the inner peripheral surface of the hearth 41, and the end surface of the furnace cover 21 close to one side of the outer cover 11 is not contacted with the outer cover 11, so that heat in a cavity in the hearth 41 is effectively prevented from being transferred to the outer cover 11 through the inner flange 24, and further, heat loss and temperature change are prevented. Meanwhile, because the aluminum silicate is high in temperature resistance (over 1000 ℃), the furnace cover 21 made of the aluminum silicate can meet the post-column derivation heating requirement at a high temperature, and the post-column derivation temperature range is widened. Further, an outer flange 23 is arranged between the outer peripheral surface of the furnace cover 21 and the inner side wall of the outer cover 11, the outer peripheral surface of the furnace cover 21 is not in contact with the inner side wall of the outer cover 11, and heat loss is reduced by reducing the contact area.

In order to enhance the expandability of the number of the support tubes 31 in the post-column derived device, a mounting and connecting structure capable of being flexibly disassembled and assembled is adopted, as shown in fig. 2, two ends of each support tube 31 are respectively connected with the inner flange 24, positioning columns 33 are arranged on the inner flanges 24, and the positioning columns 33 are inserted at two ends of each support tube 31; the inner flange 24 is provided with a connecting bolt 36, and the connecting bolt 36 penetrates through the inner flange 24 and the furnace cover 21 in sequence and is fastened through a connecting nut 37. To reduce heat conduction, the connecting bolt 36 and connecting nut 37 do not contact the handle 13 and the support 14. The positioning column 33 is internally provided with a connecting through hole, a fastening bolt is arranged in the connecting through hole, and a fastening nut matched with the fastening bolt is arranged on the inner flange 24 or in the connecting through hole of the positioning column 33 on the other side of the inner flange 24. Through the structure, the number of the supporting pipes 31 can be adjusted by changing the number of the inner flanges 24 and the positioning columns 33, and the requirements of different heating time or heating path lengths are further met.

The present invention has been described above by way of example, but the present invention is not limited to the above-described specific embodiments, and any modification or variation made based on the present invention is within the scope of the present invention as claimed.

Claims

1. The utility model provides an extensible post derivation device, its characterized in that, includes enclosing cover (11), two port (12), furnace (41), stay tube (31) and reaction tube (32), enclosing cover (11) and furnace (41) and enclosing into closed chamber, set up heater strip (42) that are used for heating closed chamber in the furnace (41) lateral wall, stay tube (31) and reaction tube (32) set up in closed chamber, the quantity of stay tube (31) is a plurality of and parallel arrangement on inner flange (24), stay tube (31) are hollow structure, reaction tube (32) are around establishing outside each stay tube (31) in proper order, two port (12) are connected respectively to reaction tube (32) both ends, two port (12) set up on enclosing cover (11).

2. The expandable post-column derivative device according to claim 1, wherein a cover (21) is provided between the inner flange (24) and the outer cover (11), the cover (21) is made of aluminum silicate, the cover (21) is provided with a connection port (22) communicating with the two ports (12) and the reaction tube (32), respectively, the outer circumferential surface of the cover (21) is closely attached to the inner circumferential surface of the hearth (41), and the end surface of the cover (21) near the outer cover (11) is not in contact with the outer cover (11).

3. The expandable post-column derived device according to claim 1, wherein the two ends of the supporting tube (31) are respectively connected with the inner flange (24), the inner flange (24) is provided with positioning columns (33), and the positioning columns (33) are inserted at the two ends of the supporting tube (31); the inner flange (24) is provided with a connecting bolt (36), and the connecting bolt (36) sequentially penetrates through the inner flange (24) and the furnace cover (21) and is fastened through a connecting nut (37).

4. The expandable post-post derivative device according to claim 3, wherein the positioning post (33) is provided with a connecting through hole therein, and a fastening bolt is provided in the connecting through hole, and a fastening nut matched with the fastening bolt is provided on the inner flange (24) or in the connecting through hole of the positioning post (33) on the other side of the inner flange (24).

5. An expandable post-column derivatization device according to claim 3, wherein the inner flange (24) is provided with threading holes (35) for the reaction tubes (32) to pass through.

6. The expandable post-column derived device according to claim 2, wherein an outer flange (23) is provided between the outer circumferential surface of the furnace cover (21) and the inner side wall of the outer cover (11), and the outer circumferential surface of the furnace cover (21) is not in contact with the inner side wall of the outer cover (11).

7. An expandable post-column derivative according to claim 1, wherein a handle (13) is provided on the outer cover (11), the handle (13) being fastened to the outer cover (11) by means of a bracket (14).

8. An expandable post-column derivative device according to claim 1, wherein a temperature sensor (44) is arranged in the furnace (41).