CN202275018U

CN202275018U - Nitrogen content determination device

Info

Publication number: CN202275018U
Application number: CN201120388795XU
Authority: CN
Inventors: 李优琴; 彭秀元
Original assignee: Jiangsu Academy of Agricultural Sciences
Current assignee: Jiangsu Academy of Agricultural Sciences
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-06-13
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a nitrogen content determination device, comprising a steam generating device, wherein the steam generating device is connected with a distillation tube, the lower part of the distillation tube is provided with a distillation bottle, the upper end of the distillation tube is connected with the upper end of a condenser pipe by virtue of a buffer ball, and a receiving bottle is arranged below the condenser pipe. Unique distillation tube design is adopted, steam is introduced into liquid in the distillation bottle by virtue of a central tube of the distillation tube, and the outer tube at the upper part of the distillation tube is provided with a hole, thus ammonia steamed out from the distillation bottle enters into the condenser pipe along with the steam. The nitrogen content determination device disclosed by the utility model has simple structure and low price, is convenient to operate, has good determination stability and repeatability, can determine multiple samples at the same time, has the determination speed equivalent to that of an automatic nitrogen determination apparatus, can be widely applied to scientific research, teaching, mass detection of manufacturing enterprises and separation and purification of some products and is especially applicable to a base level laboratory.

Description

A kind of nitrogen content determinator

Technical field

The utility model relates to a kind of chemical substance pick-up unit, particularly a kind of nitrogen content determinator that is applicable to the separation and purification of scientific research, teaching, manufacturing enterprise's quality testing and portioned product

Background technology

Nitrogen content is the normal project of surveying such as food, feed, agricultural product, agriculture input and home environment condition; Its assay method has Kjeldahl, nessler reagent colourimetry, ISE method, capillary electrophoresis analysis method, flow injection analysis, TOC analyzer method, full-automatic azotometer method or the like; Kjeldahl is to use to such an extent that the most also be classic methods in these methods; The calibrator operation relative complex of the Kjeldahl of selling in the market except that azotometer; And can only distill a sample, the proofed sleeve that uses in the device is owing to need often change with the fragile need of pliers control event when cleaning, discharge opeing.

The utility model content

The utility model purpose: the utility model technical matters to be solved is the deficiency to prior art, and a kind of nitrogen content determinator is provided.

In order to solve the problems of the technologies described above, the utility model discloses a kind of nitrogen content determinator, comprise steam raising plant; Steam raising plant connects distillation cascade; The distillation cascade bottom is provided with cucurbit, and the distillation cascade upper end connects the condenser pipe upper end through buffering ball, and the condenser pipe below is provided with receiving bottle.

In the utility model, said steam raising plant comprises steam bottle, rubber bottle cover, is arranged on the heating electric furnace heating wire of the overcoat magnetic tube in the steam bottle and the steam pipe that inserts steam bottle;

Said heating electric furnace heating wire two ends connect output voltage regulator through porcelain connector, pressure regulator input termination external power cord.

In the utility model, said distillation cascade comprises outer tube, and part is positioned at the pipe core of outer tube, and said pipe core one end is positioned at cucurbit, and the other end connects said steam pipe; Said outer tube below is provided with aperture; Said outer tube upper end connects said buffering ball.

The utility model principle also is based on Kjeldahl; Innovative point is the design of distillation cascade; Pipe core imports steam in the cucurbit; The ammonia steam that distills out gets into condenser pipe by outer tube, and water vapour can carry out a plurality of samples distillations simultaneously through Y-pipe shunting, steam produce what by with the steam generation bottle in the pressure regulator that links to each other of heating electric furnace heating wire control.

Beneficial effect: the utility model is simple in structure; Cheap, easy to operate, measure stability, good reproducibility; Can carry out a plurality of sample determinations simultaneously; Finding speed and nitrogen auto analyzer are suitable, can be widely used in the separation and purification of scientific research, teaching, manufacturing enterprise's quality testing and portioned product, are particularly suitable for the basic unit laboratory and use.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done specifying further, the above-mentioned and/or otherwise advantage of the utility model will become apparent.

Fig. 1 is the utility model apparatus structure synoptic diagram.

Embodiment

As shown in Figure 1, the utility model discloses a kind of nitrogen content determinator, comprise steam raising plant; Steam raising plant connects distillation cascade; The distillation cascade lower end is provided with cucurbit 11, and the distillation cascade upper end connects condenser pipe 14 upper ends through buffering ball 12, and the condenser pipe below is provided with receiving bottle 15.Condenser pipe 14 upper and lowers are respectively equipped with cooling water inlet 17 and coolant outlet 16.Said steam raising plant comprises steam bottle 1, rubber bottle cover 4, is arranged on the heating electric furnace heating wire 2 of the overcoat magnetic tube in the steam bottle and the steam pipe 5 (steam pipe adjunction Y-pipe as required links to each other with a plurality of distillation pipe cores) that inserts steam bottle.Said heating electric furnace heating wire two ends connect external power cord 6 through porcelain connector 3.Said distillation cascade comprises outer tube 9, and part is positioned at the pipe core 8 of outer tube, and said pipe core 8 bottoms are positioned at cucurbit, and the upper end connects said steam pipe 5 through flexible pipe 7.Said outer tube below is provided with aperture 10, and said outer tube 9 upper ends connect said buffering ball 12 lower ends through flexible pipe, and buffering ball 12 upper ends connect condenser pipe 14 upper ends through flexible pipe 13.

Embodiment

As shown in Figure 1, the present embodiment steam raising plant comprises the heating electric furnace heating wire 2 of 2000～3000ml triangular flask 1, overcoat magnetic tube, rubber bottle cover 4 with holes, connects porcelain connector 3, steam pipe 5 (can be connected Y-pipe as required), the power lead 6 of power lead and electric furnace heating wire.Be characterized in and join with a plurality of distillation cascades as required, through pressure regulator steam regulation amount.Also have a hole in the middle of the rubber bottle cover 4, with spile 18 jam-packs, distillation can prevent the solution suck-back once finishing to open spile during distillation.

Distilling apparatus comprises cucurbit 11, distillation cascade, buffering ball 12, condenser pipe 14, receiving bottle 15.Distillation cascade has pipe core (interior pipe) and outer tube 9, and pipe core 8 imports cucurbit bottom with steam, and the ammonia that the outer tube bottom has an aperture 10 let to produce gets in the condenser pipe with water vapor manages, and the condenser pipe outer tube leads to chilled water.

Water vapor generation device is linked to each other with the distillation cascade pipe core through rubber tube, glass Y-pipe by the steam pipe on it.Distillation cascade is fixed on the cucurbit by rubber bottle cover, and the distillation cascade outer tube links to each other with buffering ball through rubber tube, connects condenser pipe again, and receiving bottle is put in the condenser pipe bottom.

The sample that digestion is good is placed on the alkali lye that adds capacity in the cucurbit, shakes up, and rapid and distillation cascade connects, and opens condensate water, regulates pressure regulator and begins heating steam, distills, and regulates distillation speed through pressure regulator, reaches 50～60ml when receiving liquid, can finish distillation.

With this device country-level standard substance tomato leaf GSBZ51001 (ESP-1) and soil GBW07401 (GSS-1) being measured the result sees the following form:

Standard substance analysis result (n=6)

The device that present embodiment can be used for nitrogen determination comprises water vapour generating means, distillation, condensation, receiving trap.A plurality of steam (vapor) outlets can be set on the water vapour generating means join, distill a plurality of samples simultaneously through conduit, distillation cascade and cucurbit.

The utility model provides a kind of thinking and method of nitrogen content determinator; The method and the approach of concrete this technical scheme of realization are a lot, and the above only is the preferred implementation of the utility model, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.The all available prior art of each ingredient not clear and definite in the present embodiment realizes.

Claims

1. a nitrogen content determinator is characterized in that, comprises steam raising plant, and steam raising plant connects distillation cascade, and the distillation cascade bottom is provided with cucurbit, and the distillation cascade upper end connects the condenser pipe upper end through buffering ball, and the condenser pipe below is provided with receiving bottle.

2. a kind of nitrogen content determinator according to claim 1 is characterized in that, said steam raising plant comprises steam bottle, rubber bottle cover, is arranged on the heating electric furnace heating wire of the overcoat magnetic tube in the steam bottle and the steam pipe that inserts steam bottle;

Said heating electric furnace heating wire two ends connect external power cord through porcelain connector.

3. a kind of nitrogen content determinator according to claim 2 is characterized in that said distillation cascade comprises outer tube, and part is positioned at the pipe core of outer tube, and said pipe core one end is positioned at cucurbit, and the other end connects said steam pipe; Said outer tube below is provided with aperture; Said outer tube upper end connects said buffering ball.