CN2069557U

CN2069557U - Digestive stove

Info

Publication number: CN2069557U
Application number: CN 90212354
Authority: CN
Inventors: 葛致远; 戴长生
Original assignee: YIXING CITY INST OF SCIENTIFIC EDUCATION INSTRUMENT
Current assignee: YIXING CITY INST OF SCIENTIFIC EDUCATION INSTRUMENT
Priority date: 1990-06-13
Filing date: 1990-06-13
Publication date: 1991-01-16

Abstract

The utility model relates to a digestive stove which belongs to the heating digestive device for the test and analysis of organic samples. The digestive stove is composed of a sealed box type stove body and an electric heating rod hung on the middle-lower part of the stove body. An infrared coating is coated in the digestive stove. Compared with the prior art, the radiation heating mode has the advantages of fast temperature raising, small average power consumption (degree/sample), high thermal efficiency, small temperature difference of heating the digestive liquid, no wall splashing, wide application and one machine (stove) with multiple purposes, can simultaneously carry out a plurality of samples or a plurality of repeated digestions, and can be used for the digestion with different requirements and different capacity by changing different cover plates.

Description

Digesting

The utility model is about organic sample test analysis hot digestion equipment.

The digestion of organic sample, a kind of known digesting, be with the Contact Heating sample digestion, its formation is that resistance wire is embedded in solid aluminium ingot with holes or the carborundum plate, with electrical heating aluminium ingot or carborundum plate, this digesting of the digest tube sample digestion that the aluminium ingot of heating or carborundum plate conduction heating insert in the hole with solid heating medium contact (conduction) hot digestion pipe sample digestion, its weak point is, the heating medium thermal capacitance is big, programming rate is slow, power loss is big, and open heating arrangement makes heated object such as digest tube bottom and the side temperature difference of being heated big, easily causes sample digestion to spatter that hydrorrhea goes out or wall built-up, the loss sample, influence test effect and precision, and this digesting function singleness can only be used for the digest tube that a kind of capacity specifications is changed and be suitable for to wet ash (disappearing).

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of programming rate fast, heats in the radiant baking mode, and what can effectively prevent sample digestion spatters that hydrorrhea goes out or wall built-up, and can adapt to the digesting of multiple digestion requirement and capacity specifications.

Formation of the present utility model comprises electrical bar and band end insulation casing, and its improvement is the electrical bar suspension in the casing middle and lower part, and removable cover plate is arranged at casing top, and chamber interior wall and/or electrical bar surface-coated have infrared coating.

Further specify with reference to accompanying drawing below in conjunction with embodiment.

Embodiment one: Fig. 1 is that utility model is used for wet ash (disappearing) change cut-open view, insulation cover plate 2 is arranged in hollow, rectangular holding furnace (casing) body 3 tops, look the digest tube diameter on the cover plate 2 and have a plurality of through holes 1, electrically heated rod 4 parallel suspensions are in the body of heater middle and lower part, and inboard wall of furnace body and/or electrically heated rod surface-coated have infrared coating 5.Electrically heated rod is made up of quartz glass tube and the resistance wire in it.During use, digest tube is inserted from cover plate through hole 1, the energising heating, the electrically heated rod of digest tube both sides reaches the digest tube radiation heating around furnace chamber, because the airtight and infrared radiation heating of body of heater, it is good respectively to digest the hot homogeneity in hole and each position in the stove, and the heated liquid thermograde is little, and digestive juice is three-dimensional boiling, be difficult for spattering that hydrorrhea goes out or wall built-up, avoid sample lost, changed different digestion aperture cover plate, can carry out trace, semimicro, macro-analysis digestion.

Embodiment two: Fig. 2 is used for water, sand bath cut-open view for utility model, as first embodiment, a U-shaped metallic channel loam cake 6 is arranged above the hot digestion stove, and digesting both can be used for water-bath, oil bath, can be used for electric sand bath again.

Embodiment three: Fig. 3 as first embodiment, on the derby cover plate 7 above the hot digestion stove, has half deep hole 8 for utility model is used for organic digestion cut-open view, makes digesting can be used for that organic cup digestion is measured and trace element is measured as arsenic.

Embodiment four: Fig. 4 is used for the high-temperature electric resistance furnace cut-open view for utility model, as first embodiment, atresia insulation cover plate 9 is arranged above the hot digestion stove, makes digesting be in air-tight state, double as dry ashing high-temperature electric resistance furnace.

The utility model is owing to adopt closed furnace body, heating source is suspended from radiation heating in the stove, have the heat medium thermal capacitance than prior art, good heat insulating, programming rate is fast, average current drain (degree/sample) is little, thermal efficiency height, digestion rate is fast, and heating liquid has a narrow range of temperature, do not spatter the liquid wall built-up, can carry out simultaneously a plurality of samples or repeatedly repeat digestion. Change different cover plates, can be used for different requirements. The digestion of capacity, a machine (stove) is multiplex.

Claims

1, a kind of analysis digesting is made up of electrical bar and band end insulation casing, it is characterized in that the electrical bar suspension in the casing middle and lower part, and replaceable cover plate is arranged at casing top, and chamber interior wall and/or electrical bar surface-coated have infrared coating.

2, digesting according to claim 1 is characterized in that the warming plate of said cover plate for the band through hole.

3, digesting according to claim 1 is characterized in that said cover plate is the U-shaped metallic channel.

4, digesting according to claim 1 is characterized in that said cover plate is the derby with half through hole.

5, digesting according to claim 1 is characterized in that said cover plate is the atresia warming plate.

6,, it is characterized in that said electrical bar is made up of quartz glass tube and the heating wire that runs through as digesting as described in the claim 1,2,3,4 or 5.