CN210142035U - Solid sample pretreatment digestion instrument - Google Patents
Solid sample pretreatment digestion instrument Download PDFInfo
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- CN210142035U CN210142035U CN201920996167.6U CN201920996167U CN210142035U CN 210142035 U CN210142035 U CN 210142035U CN 201920996167 U CN201920996167 U CN 201920996167U CN 210142035 U CN210142035 U CN 210142035U
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Abstract
The utility model relates to the field of digestion equipment, in particular to a solid sample pretreatment digestion instrument, which comprises a box body, wherein a heating device and a sample groove are arranged in the box body; a solvent storage device is arranged on the side edge of the box body; a sample introduction device is arranged above the box body, and two ends of the sample introduction device are respectively connected with the sample tank and the solvent storage device through hoses; an air extractor is arranged above the box body, and the air extractor is connected with an alkali liquor atomization device pipeline arranged on the side edge of the box body and is provided with a control system. Use the utility model provides a clear up the appearance, can implement to advance accurate interpolation to the sample groove and clear up reagent, reduce the influence that gaseous solvent caused simultaneously, when cooperation control system carries out the use, need not the manual work and carry out temperature regulation and control, reagent interpolation, realize automated processing, to improving work efficiency, reduction in production cost etc. has obvious advantage.
Description
Technical Field
The utility model relates to a clear up the equipment field, in particular to appearance is cleared up in solid sample pretreatment.
Background
The sample pretreatment stage is an important link in the analysis and detection process, and the link mainly comprises 4 steps of weighing a sample, adding a solvent, heating for digestion and extracting the sample, wherein each step needs to be independently and continuously completed by detection personnel, the matters needing attention in each step are different, and the treatment methods are different, so that the defects of labor consumption, time consumption and high working strength exist in the pretreatment stage, and the method has great influence on improving the detection efficiency, reducing the production cost and reducing the working strength of the detection personnel.
At present, most digestion reactions are methods for destroying organic substances or reducing substances in a sample by using acid liquor under heating, and commonly used acid solutions are: nitric acid-sulfuric acid, nitric acid-perchloric acid, hydrofluoric acid, hydrogen peroxide, and the like, which react under heating, generate a gaseous solvent during heating, and are harmful to the detection personnel.
The existing digestion instrument lacks a device for neutralizing a gaseous solvent generated in the process of heating digestion reaction.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the existing digestion instrument mentioned in the background technology lacks a device for neutralizing a gaseous solvent generated in the heating digestion reaction process, the utility model provides a solid sample pretreatment digestion instrument, which comprises a box body, wherein a heating device and a sample groove are arranged in the box body; a solvent storage device is arranged on the side edge of the box body; a sample introduction device is arranged above the box body, and two ends of the sample introduction device are respectively connected with the sample tank and the solvent storage device through hoses; an air extractor is arranged above the box body and is connected with an alkali liquor atomization device pipeline arranged on the side edge of the box body.
On the basis of the structure, further, hollow hard glass is arranged above the box body, and the sample feeding device is connected with the solvent storage device through the hollow hard glass and a hose.
On the basis of the structure, the hose is made of polytetrafluoroethylene.
On the basis of the structure, a plurality of reagent tanks are further arranged in the solvent storage device.
In addition to the above structure, the heating device is a graphite heater.
On the basis of the structure, further, a PVC film is arranged on the outer surface of the box body.
On the basis of the structure, the sample injection device is a microsyringe.
On the basis of the structure, the heating device, the sample feeding device and the air extracting device are electrically connected with the control system.
On the basis of the structure, further, the waste gas pretreatment pipeline is of a double-layer pipeline structure and comprises an outer pipe and an inner pipe, a gap is formed between the outer pipe and the inner pipe, the upper end and the lower end of the outer pipe are respectively provided with a water inlet and a water outlet, and an activated carbon layer is arranged in the inner pipe.
The utility model provides a pair of appearance is cleared up in solid sample pretreatment compares with prior art, has following advantage:
1. in the heating digestion reaction process, the reagent is accurately added through the sample feeding device, so that the waste gas treatment device has a waste gas treatment function, the generated gas solvent can be neutralized in time, and the harm of the gas solvent to workers and the environment is reduced;
2. the automatic and more efficient detection is realized by connecting the control system with the device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a solid sample pretreatment digestion instrument provided by the present invention;
fig. 2 is a schematic view of another angle structure of the solid sample pretreatment digestion instrument provided by the present invention;
fig. 3 is a schematic view of an internal structure of a box body provided by the present invention;
fig. 4 is a schematic view of an internal structure of an exhaust gas pretreatment pipe provided by the present invention;
fig. 5 is a control connection block diagram of the automatic solid sample pretreatment digestion instrument provided by the utility model.
Reference numerals:
100 box 110 heating device 120 sample tank
130 solvent storage device 140 sampling device 150 air extractor
160 hose 170 hollow hard glass 180 alkali liquor atomization device
190 waste gas pretreatment pipe 191 outer pipe 192 inner pipe
193 active carbon layer 194 water inlet 195 water outlet
200 control system
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The utility model provides a solid sample pretreatment digestion instrument, which comprises a box body 100, wherein a heating device 110 and a sample groove 120 are arranged in the box body 100; a solvent storage device 130 is arranged on the side of the box body 100; a sample introduction device 140 is arranged above the box body 100, and two ends of the sample introduction device 140 are respectively connected with the sample tank 120 and the solvent storage device 130 through hoses 160; an air extractor 150 is arranged above the box body 100, and the air extractor 150 is connected with an alkali liquor atomization device 180 arranged on the side of the box body 100 through a pipeline.
In specific implementation, as shown in fig. 1 to 3, the heating device 110 may be disposed at the bottom or at the side of the box 100, and the heating device 110 may be water bath heating, oil bath heating, graphite plate heating, or the like, and is used to heat the sample and the digestion reagent placed in the sample tank 120, and the operator may adaptively set the temperature in the box 100 through a temperature controller disposed outside the box 100; the air extractor 150 is disposed above the box 100, and of course, the air extractor 150 may be disposed on both sides of the right above the box 100 or disposed annularly; after the weighed sample solids are placed in the sample tank 120, the air extractor 150 and the alkali liquor atomization device 180 are started, the gaseous solvent generated in the heating process is extracted in real time, the gaseous solvent is neutralized in time through the alkali liquor atomization device, and then the gaseous solvent is discharged into the waste liquid collecting tank, wherein the air extractor 150 can be a large-flow air extractor. The air extracting device 150 can adopt a W25N400 air extracting pump with the model number of speed regulation; then, a digestion reagent is extracted from the solvent storage device 130 into the sample tank 120 in which a sample is placed through a hose by a sample injection device 140, the sample injection device 140 can be a self-suction type micro pump, preferably a micro sample injection pump, the sample injection device 140 can also be a peristaltic pump, the rotating speed of the peristaltic pump can be adjusted, the rotating speed of the peristaltic pump is adjusted according to different sample injection amounts of the reagent, the specifically adopted model is a high-protection peristaltic pump BT100-1G, the heating device 110 is simultaneously turned on, the heating temperature is set, heat is provided in a resistance wire heating mode, a water bath, an oil bath or a graphite plate can be selected according to the required temperature, the heating range is 1-500 ℃, the heating rate is 1 ℃/s, and the heating device 110 can be an iridescent OHR-A303 temperature control instrument; and finally, after the reaction is finished, stopping heating, and taking out the sample for treatment when the temperature is reduced to a proper temperature. The sample wells 120 may be provided in plural in the case 100, so as to facilitate digestion of plural samples at the same time.
Preferably, a hollow hard glass 170 is arranged above the box body 130, and the sample introduction device 140 is connected with the solvent storage device 130 through the hollow hard glass 170 and the hose 160.
In specific implementation, the hollow hard glass 170 is arranged above the box body 130, and the hollow hard glass 170 may be fixed on the box body 100 through a bracket, or the hollow hard glass 170 may be directly prevented from being fixed on the box body 100, or fixed in other manners; the hollow hard glass 170 may be a hollow tubular structure, the sample introduction device 140 may extract the digestion reagent from the solvent storage device 130 through the hollow hard glass 170, the hollow hard glass 170 is connected to the solvent storage device 130 through a hose 160, one end of the hose 160 connected to the hollow hard glass 170 is connected to the solvent storage device 130, and the other end of the hose is externally sleeved in the hollow hard glass 170, the hollow hard glass 170 is provided to play a role in fixing the hose 160, so as to facilitate the extraction of the digestion reagent by the sample introduction device 140.
Preferably, the hose 160 is made of teflon.
In specific implementation, the hose 160 is made of polytetrafluoroethylene, and the polytetrafluoroethylene hose has excellent chemical stability, corrosion resistance and aging resistance, and can be used for conveying a strong corrosive medium at a high temperature.
Preferably, a plurality of reagent tanks are disposed in the solvent storage device 130.
In specific implementation, a plurality of reagent grooves are arranged in the solvent storage device 130, the reagent grooves can store various different digestion solvents, and the use range of digestion instruments for digesting samples is increased.
Preferably, the heating device 110 is a graphite heater.
In specific implementation, the heating device 110 may be a graphite heater, and provides heat by means of electric heating with a resistance wire, and is matched with a graphite panel to realize uniform heating, and the graphite panel may be disposed around the sample tank 120, or disposed at the bottom of the sample tank 120.
Preferably, the outer surface of the case 100 is provided with a PVC film.
In specific implementation, the outer surface of the box body 100 is provided with an acid-proof and alkali-proof PVC film to prevent the equipment from being corroded by acid and alkali.
Preferably, the sample injection device 140 is a microsyringe.
In specific implementation, the sample injection device 140 preferably employs a micro sample injector, which is beneficial to accurately adding a reagent.
Preferably, the heating device 110, the sample introduction device 140 and the air extraction device 150 are electrically connected with the control system 200.
In specific implementation, as shown in fig. 5, the heating device 110, the sample introduction device 140 and the air extraction device 150 are electrically connected to the control system 200, and heating, sample introduction and air extraction are controlled on an operation interface, so that full-automatic digestion reagent addition is realized without manual work; it should be noted that the heating device 110 can realize the start, stop, automatic heating and heating temperature control of the heating device 110 through the control system 200; the air exhaust device 150 can automatically start the air exhaust device 150 when the digestion instrument starts to be used through the control system 200, and stop the operation of the air exhaust device 150 after the reaction is finished; the sample introduction device 140, through the control system 200, performs accurate extraction of the actual additive from the solvent storage device 130 into the sample tank 120 in appropriate amounts, and selects different digestion reagents from the solvent storage device 130 according to different product settings.
Preferably, the exhaust gas pretreatment pipeline 190 has a double-layer pipeline structure, and comprises an outer pipe 191 and an inner pipe 192, a gap is formed between the outer pipe 191 and the inner pipe 192, the upper end and the lower end of the outer pipe 191 are respectively provided with a water inlet 194 and a water outlet 195, and an activated carbon layer 193 is arranged in the inner pipe 192.
In specific implementation, the waste gas pretreatment pipeline 190 is of a double-layer pipeline structure and comprises an outer pipe 191 and an inner pipe 192, a gap is formed between the outer pipe 191 and the inner pipe 192, a water inlet 194 and a water outlet 195 are respectively formed in the upper end and the lower end of the outer pipe 191, when the equipment runs, the water outlet 195 is closed, the water inlet 194 is opened, and cooling water fills the gap between the outer pipe 191 and the inner pipe 192; in addition, an activated carbon layer 193 is arranged in the inner pipe 192, and the waste gas is adsorbed and deodorized through the activated carbon layer 193 and finally enters the alkali liquor atomization device 180.
The opening and closing of the water inlet 194 and the water outlet 195 can be performed by adaptive opening and closing, and water addition and water exchange according to the temperature of cooling water in the pipe.
Although terms such as tank, heating device, sample tank, solvent storage device, sample introduction device, air extraction device, hose, hollow hard glass, alkali liquor atomization device, waste gas pretreatment pipeline, outer pipe, inner pipe, water inlet, water outlet, activated carbon layer, control system and the like are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a solid sample pretreatment digestion instrument, includes box (100), its characterized in that:
a heating device (110) and a sample groove (120) are arranged in the box body (100);
a solvent storage device (130) is arranged on the side of the box body (100);
a sample feeding device (140) is arranged above the box body (100), and two ends of the sample feeding device (140) are respectively connected with the sample tank (120) and the solvent storage device (130) through hoses (160);
an air extractor (150) is arranged above the box body (100), and the air extractor (150) is connected with an alkali liquor atomization device (180) arranged at the bottom of the box body (100) through a waste gas pretreatment pipeline (190).
2. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: the device is characterized in that hollow hard glass (170) is arranged above the box body (100), and the sample feeding device (140) is connected with the solvent storage device (130) through the hollow hard glass (170) and a hose (160).
3. The solid sample pretreatment digestion instrument according to claim 1 or 2, characterized in that: the hose (160) is made of polytetrafluoroethylene.
4. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: a plurality of reagent grooves are arranged in the solvent storage device (130).
5. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: the heating device (110) is a graphite heater.
6. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: the outer surface of the box body (100) is provided with a PVC film.
7. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: the sample injection device (140) is a microsampler.
8. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: the heating device (110), the sample feeding device (140) and the air extracting device (150) are electrically connected with the control system (200).
9. The solid sample pretreatment digestion instrument according to claim 1, characterized in that: the waste gas pretreatment pipeline (190) is of a double-layer pipeline structure and comprises an outer pipe (191) and an inner pipe (192), a gap is formed between the outer pipe (191) and the inner pipe (192), the upper end and the lower end of the outer pipe (191) are respectively provided with a water inlet (194) and a water outlet (195), and an activated carbon layer (193) is arranged in the inner pipe (192).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996167.6U CN210142035U (en) | 2019-06-28 | 2019-06-28 | Solid sample pretreatment digestion instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920996167.6U CN210142035U (en) | 2019-06-28 | 2019-06-28 | Solid sample pretreatment digestion instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210142035U true CN210142035U (en) | 2020-03-13 |
Family
ID=69735942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920996167.6U Active CN210142035U (en) | 2019-06-28 | 2019-06-28 | Solid sample pretreatment digestion instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210142035U (en) |
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2019
- 2019-06-28 CN CN201920996167.6U patent/CN210142035U/en active Active
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