CN2379800Y - Instrument for digesting and treating samples - Google Patents

Abstract

The utility model relates to an instrument used for digesting and treating samples. The utility model mainly solves the defects that the once sample digesting amount of an existing digesting is small, samples digested are few, an inner gallbladder of the can is easy to deform, and gas leakage can be created. The instrument is composed of dissolvable bullets, an assembling box type electric oven (16) for heating the dissolvable bullets, a heat preservation box body (19) and a control meter (20). The utility model is characterized in that eighteen dissolvable bullets are divided into a front row, a middle row and a rear row. An upper layer and a lower layer are overlapped in the assembling box type electric oven (16). The dissolvable bullets are clamped in four electric heating plates (17). Heating time and temperature are controlled by the meter (20). The heat preservation box body (19) is used for heat preservation effect and also used as a cooling water tank. The utility model has the advantages of fast sample cooling, wide ranges of temperature and pressure, large numbers of the samples digested, large amount of the samples digested, simple structure, high durability and low cost.

Description

The treatments of the sample processing instrument

The utility model relates to a kind of instrument of digestion process sample, is specially adapted to do in physical and chemical inspection the instrumentation that carries out sample pretreatment before trace element or the trace element analysis.

Trace element in the test sample or trace element must carry out pre-service to sample, and the method for present domestic processing sample has two classes.The first kind is traditional dry incineration method and wet type resolution method, i.e. national standard method.This method is very backward, consuming time, power consumption, consumption reagent, contaminated environment, and the laboratory personnel is sick of this method.Second class be rose in recent years use the counteracting tank sample digestion.It is to do inner bag with polytetrafluoroethylmaterial material, and engineering plastics are done shell, and sample and reagent are added in the jar, puts the purpose that micro-wave oven heating supercharging reaches sample digestion into.Shanghai, Beijing, Shenyang, Chengdu, Wuxi all have this type of counteracting tank to sell, the most representative with the MK-1 type optical fiber pressure automatic control closed microwave stove digestion system (ZL942394143) that Shanghai research institute produces, the pressure pan that model 60SC-1 calls oneself in this institute can withstand voltage 4.0Mpa in the time of 200 ℃, and the corresponding relation of this and saturated steam temperature and pressure is inconsistent.The deadly defect of this series products is that the linear expansion coefficient of teflon class material is bigger more than 10 times than steel, temperature surpasses 150 ℃ and begins softening modification, counteracting tank gas must leak in the time of 200 ℃, the micro-wave oven heat temperature raising is exceedingly fast, the reaction fierceness can cause bursting membrane to burst apart, to disassemble after the bursting membrane distortion and on mould, add heat straightening, expand big and also will put the refrigerator shrinkage into.It is to high-fat food, and the digestion quality of cosmetics is unsatisfactory.It once digests 4 samples at most, and the application of sample amount can not and cost an arm and a leg greater than 1 gram.

The purpose of this utility model is to overcome above-mentioned shortcoming, and a kind of treatments of the sample processing instrument is provided, and it can make the temperature of sample digestion bring up to 250 ℃, pressure really reaches 4.0Mpa, good seal performance, and exhausted nothing is leaked, without pressure relief device, once digest 16 duplicate samples, the digestion total amount can reach 160 grams.

To achieve these goals, technical solution of the present utility model is: a kind of treatments of the sample processing instrument comprises that by molten sample bullet be commonly called as molten bullet, to the container-type electrothermal furnace of molten bullet heating, insulation casing and control instrument are formed.It also comprises and screws and throw off molten the bullet up and down special spanner and the wrench base of threaded cap.It is characterized in that; Molten bullet is interior outer double-layer structure, plays core and makes with the polytetrafluoroethylmaterial material of band metal grill, and this material linear expansion coefficient is consistent with steel, can bear 6.4Mpa pressure in the time of 250 ℃, allows suddenly cold and hot, and use colds and heat succeed each other.Shell case is processed with the 45# round steel, and shell case external diameter maximum is 60mm, and height is 120mm, and volume is 100ml, and pressure-bearing is not less than 10Mpa.Cylinder upper and lower opening outer is threaded and threaded cap precision-fit up and down.Molten bullet has special-purpose wrench and wrench base to match with the teeth groove of threaded cap up and down to be used for screwing of threaded cap up and down and throws off; Type of heating difference with the prior art feature is a kind of container-type electrothermal furnace, three rows before, during and after 18 molten bullets divide, and two-layer up and down stacking, 4 blocks of electric hot plates form sandwich wall molten bullet are heated, and electric hot plate has binding post to pass the insulation casing and instrument connects; The container-type electrothermal furnace is outward the insulation casing that has heat-insulation layer, and it plays insulation effect to electrothermal furnace, and the double as bosh is incubated casing and is provided with water injection hole and osculum again, water emptying during heating, water filling cooling during cooling.

The utility model sample digestion umber is many, and the sample digestion amount is big, molten sample wide ranges, and the temperature, pressure wide ranges, simple in structure, easy to operate, safe and reliable, durable in use, be particularly suitable for physical and chemical inspection chamber batch samples and handle.

Below in conjunction with accompanying drawing the utility model treatments of the sample processing instrument is described in further detail.

Fig. 1 is the structural representation of the molten bullet of the utility model treatments of the sample processing instrument main part.

Fig. 2 is container-type electrothermal furnace of the present utility model and insulation can body structure facade view.

Fig. 3 is container-type electrothermal furnace of the present utility model, insulation can section plan view.

Shown in Figure 1, molten bullet is by interior outer double-layer structure, play core 1 by] [lower bolster 4 is formed for type tube 2, upper cover plate 3.Shell case 5 is by cylinder 6, and shell case threaded cap 7,8 is up and down formed.There are screw thread and threaded cap 7,8 precision-fit up and down in cylinder 6 upper and lower opening outers.Molten bullet is furnished with special-purpose wrench 9, wrench base 10, the wrench base is fixed on the sleeper 11, wrench 9 has the in-line teeth groove 13 of threaded cap 7 on yi word pattern projection 12 and the molten bullet to cooperate, have cross projection 14 and following threaded cap 8 cross teeth groove 15 to match on the wrench base 10, wrench 9 and wrench base 10 are used for the screwing and throw off of threaded cap up and down 7,8 of molten bullet.

Shown in Figure 2, three rows before, during and after 18 molten bullets divide, two-layer up and down overlaying in the container-type electrothermal furnace 16, four blocks of electric hot plates 17 form sandwich wall with molten cartridge clip therein, and the binding post 18 of electric hot plate 17 passes insulation casing 19 and connects with instrument 20.Insulation casing 19 22 is formed at the bottom of by case lid 21 and case.Insulation casing 19 is filled with heat-insulation layer 23, and case lid 21 is provided with thermowell 24.Container-type electrothermal furnace 16 has spacing with insulation casing 19 inwalls, insulation casing 19 existing insulation effects, double as tank again, water emptying during heating, but water filling during cooling.Water injection hole 25 and osculum 26 can make water cycle overflow.Container-type electrothermal furnace 16 is placed on the bearing 27 of insulation can 22 bottom surfaces.

Shown in Figure 3, insulation casing 19 and container-type electrothermal furnace 16 have provided the arrangement mode of molten bullet in stove.

During use, by the sample preparation program, sample and digestion reagent are added bullet core 1, molten bullet is placed wrench base 10, screw threaded cap 7,8 up and down, put into container-type electrothermal furnace 16 by arrangement mode with special-purpose wrench 9, close case lid 21, plug thermometer 24, start temperature and corresponding pressure that instrument 20 energising heating reach regulation, keep the regular hour.After sample digestion finishes, open case lid 21 heat radiations water filling cooling again after 15 minutes, fast cooling only should be opened threaded cap 7 with special-purpose wrench and take a sample when molten bullet non-scald on hand.

Claims (2)

1. treatments of the sample processing instrument, it comprises by molten bullet, be incubated casing (19) and be placed in the container-type electrothermal furnace (16) that is incubated on tank floor (22) bearing (27), and the instrument (20) of control time, temperature is formed, it is characterized in that: described molten bullet is a double-decker, bullet core (1)] [shape tube (2) upper cover plate (3) lower bolster (4) is to be made by the polytetrafluoroethylmaterial material of band metal grill, shell case (5) is steel processing, screw top (7,8) and cylinder (6) upper and lower opening outer screw thread precision-fit up and down; Described container-type electrothermal furnace (16) is equipped with 4 blocks of electric hot plates (17) and forms sandwich wall, three rows before, during and after 18 molten bullets divide, two-layer up and down overlaying between the electric hot plate (17); Between the double-deck sheet steel of described insulation casing (19) heat-insulation layer (23) is arranged, it plays insulation effect to heated container formula electrothermal furnace (16), and the double as bosh is incubated casing (19) and is provided with water injection hole (25) and osculum (26) again.

2. according to the described treatments of the sample processing instrument of claim 1, it is characterized in that: molten bullet is furnished with special-purpose wrench (9) and wrench base (10), there is in-line projection (12) to match below the wrench (9) with the in-line teeth groove (13) at last threaded cap (7) top, spanner base (10) has cross projection (14) and following threaded cap (8) bottom cross teeth groove (15) to match, and spanner (9) is used for up and down with wrench base (10) that threaded cap (7,8) screws and throws off.

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