CN210071476U - Collection device for waste gas is cleared up in heating - Google Patents
Collection device for waste gas is cleared up in heating Download PDFInfo
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- CN210071476U CN210071476U CN201920621507.7U CN201920621507U CN210071476U CN 210071476 U CN210071476 U CN 210071476U CN 201920621507 U CN201920621507 U CN 201920621507U CN 210071476 U CN210071476 U CN 210071476U
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Abstract
The utility model discloses a heating is cleared up collection device for waste gas, it adopts corrosion resistant material to make, including the open rectangle box body of top surface, install the base plate corresponding with the box body shape in the box body, the base plate lateral wall contacts and seals the fastening with the box body inner wall, has the distance between base plate bottom surface and the box body and makes the formation gas collection cavity between the two, sets up the through-hole that a plurality of equidistance array distribute on the base plate, and the through-hole runs through the base plate along vertical direction, and the one-to-one is corresponding to every through-hole on the base plate and is installed corrosion-resistant waste gas and collects the head, and; one or more corrosion-resistant joints are arranged on the side wall of the box body corresponding to the position of the gas collection cavity, and the corrosion-resistant joints are connected with a tail gas absorption system or an air pump through pipelines. The utility model discloses can effectively clear up the electric heat appearance clear up nitrogen oxide, sour gas and other waste gases, poison gas, pollutant take out in managing, effectively ensure operating personnel's is healthy, avoids environmental pollution.
Description
Technical Field
The utility model belongs to the technical field of analysis and detection experimental facilities, a clear up the appearance, especially relate to a collection device for waste gas is cleared up in heating.
Background
At present, pollution control panels of laboratories in various countries are more and more strict, sample heating pretreatment is the most applied experiment in the laboratories, the heating temperature and the used reagents are different, waste gas generated in the process is various, toxicity is light and heavy, and the pollution control panels are the main pollution sources of chemical analysis laboratories. If the waste gas is treated, the waste gas must be collected firstly for further treatment, which is a difficult problem which troubles laboratories at home and abroad.
The samples in the laboratory are various in types and complex in components, the concentration of most of components to be detected is low, the components exist in different forms, and a large amount of interfering substances exist in the samples. Prior to analytical determination, different sample pretreatments are required to obtain a form and concentration of the component to be determined that is suitable for the analytical method, and to maximize separation from interfering substances. When inorganic elements in samples (food, medicine, feed, chemical products, various materials, water samples, soil samples, solid wastes, particles trapped during atmospheric sampling and the like) are measured, the samples need to be digested, organic matters are destroyed, the particles are dissolved, and elements to be measured in various valence states are oxidized into single high valence state or converted into inorganic compounds which are easy to decompose. The current common pretreatment technologies mainly comprise dry ashing, microwave digestion, wet digestion and the like.
The dry ashing is eliminated in the field of trace and ultra-trace analysis because of low recovery rate of part of low-temperature elements and high background value. The microwave digestion is to mix a sample and excessive acid and place the mixture in a closed container to carry out digestion by microwave heating; conventional wet digestion is generally carried out by mixing the sample with an excess of acid in an open vessel and digesting by electrical heating. In both methods, excessive acid is required to be added, and is removed after digestion is completed, so that reagent blank is increased, and reagents and time are seriously wasted. In order to avoid over violent reaction, long-time pre-digestion is often needed, digestion liquid is often needed to be taken down and supplemented in the digestion process, and the efficiency is very low; the nitrogen oxides and acid gases generated in the processes of digestion and acid removal can also cause environmental pollution when being discharged into the air.
The electric heating digestion device is a common sample pretreatment device at present, is mainly applied to the treatment work of various analytical chemical samples such as digestion, extraction, proteolysis and the like, and when in use, reaction liquid is filled into a digestion tube and then placed into a plurality of digestion holes distributed in a digestion groove for heating digestion. In order to solve the problem that nitrogen oxides and acid gases generated in the digestion and acid removal processes are discharged into the air, in the prior art, a waste discharge hood as shown in figure 1 is arranged above an electrothermal digestion device and comprises a stainless steel rectangular hood body 3, four rows of air exhaust pipe groups are arranged in the hood body at equal intervals along the width direction, each row of air exhaust pipe group comprises five glass material air exhaust pipes 1 with the outer diameter of 40-45 mm and the wall thickness of 2-3 mm, the five glass material air exhaust pipes 1 are evenly distributed along the length direction of the hood body at intervals, an annular baffle plate 2 made of polytetrafluoroethylene is movably sleeved outside each air exhaust pipe, a gas collecting pipe which is perpendicular to and communicated with the bottom of each row of air exhaust pipe group is arranged at the bottom of each row of air exhaust pipe groups, two ends of the gas collecting pipe are closed, a first communicating pipe 4 is arranged between the first row of air exhaust pipe groups and one end of the first communicating pipe is communicated with the gas collecting pipe 6a and the gas collecting pipe 6b of the first communicating pipe, the gas collecting pipe 6d is communicated, the other ends of the first communicating pipe and the second communicating pipe are respectively connected with a corrosion-resistant joint 5a and a corrosion-resistant joint 5b which are arranged on the cover body, and the two corrosion-resistant joints are connected with an air extracting pump through hoses; the plurality of exhaust pipes are in one-to-one corresponding clamping butt joint with the digestion pipes and are sealed through the annular separation blade, nitrogen oxides and acid gases entering the exhaust pipes are extracted through the hose, the first communicating pipe, the second communicating pipe and the gas collecting pipe by the aid of the exhaust pump, and the extracted nitrogen oxides and acid gases are sent into the alkali liquor pool for treatment. However, the waste discharge cover is mainly used for digestion pipes with large hole sites and few hole sites, and the glass exhaust pipe belongs to pure manual processing, has poor precision, cannot realize precision processing, is not suitable for large-scale digestion and has the problem of frangibility; and annular separation blade and exhaust tube have the clearance, lead to sour gas to spill from dispelling the pipe, influence operating personnel's healthy, corrode the metal exhaust pipe in the laboratory, influence the environment.
Disclosure of Invention
In order to solve the problems, the utility model aims at providing a collection device for waste gas is cleared up in heating of simple structure, reasonable in design novelty, excellent in use effect.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a collecting device for heating and digesting waste gas is made of corrosion-resistant materials and comprises a rectangular box body with an open top surface, a base plate corresponding to the shape of the box body is installed in the box body, the side wall of the base plate is in contact with the inner wall of the box body and is sealed and fastened, a gas collection cavity is formed between the bottom surface of the base plate and the box body by virtue of a distance, a plurality of through holes distributed in an equidistant array are formed in the base plate, the through holes penetrate through the base plate along the vertical direction, and corrosion-resistant waste gas collecting heads are installed on the base plate in; the corrosion-resistant waste gas collecting head comprises an upper end part arranged on the top surface of the substrate, and the upper end part and the substrate are integrally formed or connected together; or the corrosion-resistant waste gas collecting head is of an integrated structure or a split structure consisting of the upper end part arranged on the top surface of the substrate and the connecting part positioned in the through hole, and is provided with a longitudinal through hole; one or more corrosion-resistant joints are arranged on the side wall of the box body corresponding to the position of the gas collection cavity, and the one or more corrosion-resistant joints are connected with a tail gas absorption system or an air pump through a pipeline.
The collecting device for heating and digesting the waste gas is characterized in that the side wall of the substrate and the inner wall of the box body are tightly assembled through screws, corrosion-resistant rubber strips are tightly assembled, welded, and sealed and fastened through corrosion-resistant adhesives or one-step forming.
The collecting device for heating and digesting the waste gas is characterized in that the box body is made of a stainless steel plate, a steel plate, an aluminum plate, a galvanized plate, a high polymer material plate or one of the stainless steel plate, the aluminum plate and the galvanized plate with Teflon or epoxy resin sprayed on the surface; the substrate is made of a stainless steel plate, a steel plate, an aluminum plate, a galvanized plate, a polymer material plate, or one of the stainless steel plate, the aluminum plate and the galvanized plate, the surface of which is sprayed with Teflon or epoxy resin, and the polymer material is fluoroplastic, polypropylene, polyethylene, copolyoxymethylene, polyvinyl chloride or nylon.
The collecting device for heating and digesting the waste gas is characterized in that the upper end part of the corrosion-resistant waste gas collecting head is made of one of a high polymer material, corrosion-resistant rubber, glass and a corrosion-resistant metal material, and the connecting part is made of one of the high polymer material, the corrosion-resistant rubber, the glass and the corrosion-resistant metal material.
Further, the polymer material is fluoroplastic, polypropylene, polyethylene, polyvinyl chloride, co-formaldehyde, or nylon.
Further, the corrosion-resistant rubber is vinylidene fluoride series fluorine rubber, tetrafluoroethylene-propylene series fluorine rubber, perfluoro rubber, fluorosilicone rubber, fluorine-containing phosphazene rubber, silica gel, ethylene propylene diene monomer rubber, butyronitrile, latex or common rubber.
The collecting device for heating and digesting the waste gas has the advantages that the corrosion-resistant waste gas collecting head is connected with the mouths of the digestion tubes, test tubes, sample cups, flasks or conical flasks in a pipe inlet type, the upper end part of the corrosion-resistant waste gas collecting head is a round platform body with a small upper part and a large lower part, the top surface of the corrosion-resistant waste gas collecting head is a plane, the round platform body with a small upper part and a large lower part is a concave curved surface, or the round platform body with a small upper part and a large lower part is a convex curved surface; the axle center of the round table body is provided with a longitudinal through hole, the inner diameter of the small end of the round table body is smaller than the inner diameter of the pipe orifice of the digestion pipe, the test tube, the sample cup, the flask or the conical flask, and the inner diameter of the large end of the round table body is larger than the inner diameter of the pipe orifice of the digestion pipe, the test tube, the sample cup, the flask or the conical flask.
The collecting device for heating and digesting the waste gas has the advantages that the corrosion-resistant waste gas collecting head is connected with the mouths of the digestion tubes, test tubes, sample cups, flasks or conical flasks in a mode of covering the mouths of the tubes, the upper end part of the corrosion-resistant waste gas collecting head is a cylinder, the top surface of the corrosion-resistant waste gas collecting head is a plane, the cylinder is a plane, the center part of the top surface of the corrosion-resistant waste gas collecting head is an inwards concave curved surface, the cylinder is an outwards convex curved surface, the cylinder is a concave circular hole surface; the axis of the cylinder is provided with a longitudinal through hole, and the inner diameter of the cylinder is more than or equal to the inner diameter of the pipe orifice of the digestion pipe, the test tube, the sample cup, the flask or the conical flask.
The collecting device for waste gas is cleared up in the heating, the connecting part of the corrosion-resistant waste gas collecting head of the collecting device consists of a thread section at the upper part and a polish rod section at the lower part, the corresponding thread is arranged on the inner wall of the through hole on the substrate, the thread section is connected with the through hole through a thread, and the end part of the polish rod section is flush with the bottom surface of the substrate or extends into the gas collecting cavity.
The heating and digestion waste gas collecting device is characterized in that a connecting part of a corrosion-resistant waste gas collecting head of the heating and digestion waste gas collecting device consists of a polished rod section at the upper part and a threaded section at the lower part, the polished rod section is arranged in a through hole in the substrate in a penetrating mode, the threaded section extends into a gas collecting cavity below the bottom surface of the substrate, and a nut is sleeved on the threaded section.
Furthermore, the polished rod section of the corrosion-resistant exhaust gas collecting head is sleeved with a spring, and the polished rod section sleeved with the spring is arranged in the through hole in the substrate in a penetrating manner.
The heating and digesting collecting device for the waste gas is characterized in that a handle is fixedly arranged on the outer bottom surface of the box body, or handles are fixedly arranged on the outer walls of two corresponding side surfaces.
The utility model provides a waste gas is cleared up in heating and is used collection device, its adopts an open corrosion-resistant collection cover in bottom, collects cover lateral wall upper portion and is provided with one or more corrosion-resistant joint, collects the cover and places at flat appearance top surface of clearing up, carries out closed cover to a plurality of bottles of clearing up, and one or more corrosion-resistant joint passes through the pipeline and is connected with tail gas absorption system or aspiration pump.
Due to the adoption of the technical scheme, the utility model discloses have following superiority:
this collection device for waste gas is cleared up in heating, its structural design is reasonable novel, the precision machining of being convenient for, the precision is high, be applicable to the pipe of clearing up of porous position, no matter the pipe of clearing up in big or small aperture all can have corresponding structure to match with it and use, can effectively clear up the electric heat nitrogen oxide in the pipe of clearing up of appearance, sour gas and other waste gases, poison gas, the pollutant is taken out, the leakproofness is good, avoid revealing, the waste gas collection rate can reach more than 80%, even reach 90%, effectively ensure operating personnel's healthy, avoid environmental pollution, and the metal exhaust pipeline in the laboratory avoids corroding, therefore, the clothes hanger is strong in practicability, safety and reliability, be favorable to environmental protection, the equipment maintenance cost is reduced, and good popularization and application value is possessed.
Drawings
FIG. 1 is a schematic view of a prior art exhaust hood;
FIG. 2 is a schematic structural view of the collecting device for heating and digesting exhaust gas according to the present invention;
FIG. 3 is a schematic diagram of the construction of one of the embodiments of the exhaust collection head of FIG. 2;
FIG. 4 is a schematic top view of the structure of FIG. 3;
FIG. 5 is a schematic diagram of the configuration of one of the bottom embodiments of the collection device for heat-decomposed exhaust gases of FIG. 2;
FIG. 6 is a schematic structural view of one of the upper end embodiments of the exhaust collection head of FIG. 2;
FIG. 7 is a schematic structural view of a second embodiment of an upper end of the exhaust collection head of FIG. 2;
FIG. 8 is a schematic view of a third embodiment of the upper end of the exhaust collection head of FIG. 2;
FIG. 9 is a schematic structural view of a fourth embodiment of the upper end of the exhaust collection head of FIG. 2;
FIG. 10 is a schematic structural view of a fifth embodiment of an upper end of the exhaust collection head of FIG. 2;
FIG. 11 is a schematic structural view of a sixth embodiment of an upper end of the exhaust collection head of FIG. 2;
FIG. 12 is a schematic structural view of a seventh embodiment of the upper end of the exhaust collection head of FIG. 2;
FIG. 13 is a schematic diagram of a second embodiment of the exhaust collection head of FIG. 2;
in the figure: 1-an exhaust pipe; 2-an annular baffle plate; 3-a cover body; 4-a first communicating pipe; 5(a, b) -linker; 6(a, b, c, d) -header; 7-a second communicating pipe; 8-box body; 9-a waste gas collection head; 10-a substrate; 11-a gas collection cavity; 12-an upper end; 13-a threaded segment; 14-a polished rod segment; 15-longitudinal through holes; 16-a handle; 17-a screw; 18-nut.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.
As shown in fig. 2 to 5, the collecting device for heating and digesting waste gas is made of corrosion-resistant materials and comprises a rectangular box body 8 with an open top surface, a base plate 10 corresponding to the shape of the box body is arranged in the box body, the side wall of the base plate is in contact with the inner wall of the box body and is sealed and fastened through a corrosion-resistant screw 17, a gas collection cavity 11 is formed between the bottom surface of the base plate and the box body by a distance, a plurality of through holes distributed in an equidistant array are formed in the base plate, the through holes penetrate through the base plate along the vertical direction, and corrosion-resistant waste gas collecting heads 9 are arranged on; the corrosion-resistant exhaust gas collection head comprises an upper end portion 12 arranged on the top surface of the substrate, and the upper end portion and the substrate are integrally formed or connected together; or the corrosion-resistant waste gas collecting head is of an integrated structure or a split structure consisting of an upper end part 12 arranged on the top surface of the substrate and a connecting part positioned in the through hole, the upper end part 12 is a truncated cone with a small upper part and a large lower part, the top surface is a plane, the axis of the truncated cone is provided with a longitudinal through hole 15, the inner diameter of the small end of the truncated cone is smaller than the inner diameter of the digestion tube, the inner diameter of the large end is larger than the inner diameter of the digestion tube, the connecting part is provided with a longitudinal through hole and consists of an upper threaded section 13 and a lower polished rod section 14, the inner wall of the through hole on the substrate is correspondingly provided with threads, the threaded section is connected with the through hole through threads; the side wall of the box body is provided with a corrosion-resistant joint 5a and a corrosion-resistant joint 5b corresponding to the position of the gas collection cavity, and the two corrosion-resistant joints are connected with a tail gas absorption system or an air pump through pipelines.
The box body is made of a stainless steel plate, a steel plate, an aluminum plate, a galvanized plate, a polymer material plate, or one of the stainless steel plate, the aluminum plate and the galvanized plate with Teflon or epoxy resin sprayed on the surface; the substrate is made of one of a stainless steel plate, a steel plate, an aluminum plate, a galvanized plate and a polymer material plate, or the stainless steel plate, the aluminum plate and the galvanized plate with Teflon or epoxy resin sprayed on the surface; the high polymer material is fluoroplastic, polypropylene, polyethylene, copolyoxymethylene, polyvinyl chloride or nylon; the box body and the substrate can be assembled in any combination in the material selection to meet the corrosion resistance requirement of the digestion tube.
The upper end part of the corrosion-resistant waste gas collecting head is made of one of a high polymer material, corrosion-resistant rubber, glass and a corrosion-resistant metal material; the connecting part is made of one of a high polymer material, corrosion-resistant rubber, glass and a corrosion-resistant metal material; the high polymer material is fluoroplastic, polypropylene, polyethylene, polyvinyl chloride, copolymethylene or nylon, and the corrosion-resistant rubber is vinylidene fluoride series fluororubber, tetrafluoroethylene-propylene series fluororubber, perfluoro rubber, fluorosilicone rubber, fluorine-containing phosphazene rubber, silica gel, ethylene propylene diene monomer rubber, butyronitrile, latex or common rubber.
The upper end of foretell corrosion-resistant waste gas collection head is provided with sealing washer or sealed the pad, and the material of sealing washer or sealed pad is macromolecular material, or corrosion-resistant rubber, and the sealing washer or sealed pad carries out the rational selection according to different shapes, the structure of the upper end of corrosion-resistant waste gas collection head, arranges the different positions of the upper end of collection head in for the mouth of pipe and the upper end leakproofness of corrosion-resistant waste gas collection head of digesting pipe, test tube, sample cup, flask or erlenmeyer flask are better.
The collecting device for heating and digesting the waste gas of the utility model can also adopt a round platform body with a small upper part and a big lower part at the upper end part of the corrosion-resistant waste gas collecting head, and the top surface is an inwards concave curved surface, as shown in figure 6; the top surface of the truncated cone body is a convex curved surface, as shown in fig. 7. The corrosion-resistant waste gas collection head in fig. 3, 6 and 7 is connected with the mouth of the digestion tube, test tube, sample cup, flask or conical flask by means of an insertion mouth.
The utility model discloses a collection device for heating and digesting waste gas, the connection mode of the corrosion-resistant waste gas collection head and the mouth of pipe of the digestion pipe, the test tube, the sample cup, the flask or the conical flask can also be covered with the mouth of pipe; the upper end of the corrosion-resistant exhaust gas collection head can also be cylindrical and the top surface is a plane, as shown in fig. 8; the center of the top surface of the cylinder is a concave curved surface, as shown in fig. 9; a cylinder with a convex curved surface at the center of the top surface, as shown in FIG. 10; the center of the top surface of the cylinder is an inward concave round hole surface, as shown in fig. 11; the top surface of the cylinder is a plane, and a groove is arranged in the cylinder, as shown in figure 12, when the upper end part is connected with the digestion tube, a sealing gasket is arranged in the groove, so that the upper end part and the digestion tube can be reliably sealed; the axis of the cylinder is provided with a longitudinal through hole, and the inner diameter of the cylinder is more than or equal to that of the digestion tube.
As shown in fig. 13, the utility model discloses a collection device for waste gas is cleared up in heating, another kind of structure of connecting portion of its corrosion-resistant waste gas collection head is for comprising the polished rod section 14 on upper portion and the screw thread section 13 of lower part, the polished rod section is worn to establish in the through-hole on base plate 10, the screw thread section stretches into in the gas collection cavity of base plate bottom surface below, 14 covers of screw thread section are equipped with nut 18, position on the screw thread end through adjusting nut, it has the activity space to make corrosion-resistant waste gas collection head in the gas collection cavity, and in the waste gas collection process, the tip of screw thread section has the distance with the interior bottom surface of box body all the time, the.
In the corrosion-resistant waste gas collecting head, the polished rod section 14 is sleeved with the spring, and the polished rod section sleeved with the spring is arranged in the through hole in the substrate in a penetrating manner; a locking mechanism is arranged between the rectangular box body 8 and the mounting frame of the digestion pipe, the locking mechanism is a hasp locking mechanism, a spring locking mechanism, a thread locking mechanism or a cam locking mechanism, so that the collection head is attached to the pipe orifice of the digestion pipe, and the problem of clearance between the digestion pipe and the corrosion-resistant waste gas collection head caused by the height error of the digestion pipe can be solved.
The height of the gas collection cavity 11 is very close to that of the box body, and the height of the gas collection cavity can be as small as possible under the condition that gas circulation is not influenced, so that the drawing force is ensured.
The outer bottom surface of the box body is fixedly provided with a handle 16, or the outer walls of the two corresponding side surfaces are fixedly provided with handles, so that the box body is convenient for workers to take and place by hands.
The utility model discloses waste gas is cleared up in heating and is used collection device's working process: during the use, install waste gas collection device in the electric heat and clear up the appearance top, the handle of box body bottom surface is up, corrosion-resistant waste gas collection head is down, place on a plurality of clears up the pipe, it inserts a plurality of corrosion-resistant waste gas collection head 9 on the base plate 11 to make a plurality of clear up the pipe respectively to correspond, align and utilize the high elasticity of corrosion-resistant waste gas collection head to make the two laminate with the upper end 12 of corrosion-resistant waste gas collection head, the aspiration pump is via the hose, corrosion-resistant joint, the gas collection cavity will clear up the nitrogen oxide in the pipe, the sour gas is taken out, send into again and handle in the alkali lye pond.
The utility model discloses a collection device for waste gas is cleared up in heating, it can use in all sample heating pretreatment, not only is limited to the strong acid to clear up, and the reagent can be water, acid, alkali, organic solvent or other chemical reagent.
The selected material can be adjusted according to the heating temperature and the different types of waste gas generated by the reagent. This waste gas collection device accessible changes the bore of toper collection lid and the change of range position and quantity, is applicable to the sample heating pretreatment instrument of different apertures and quantity to but not be restricted to the test tube with the test tube, can use with multiple laboratory heating household utensils cooperation such as erlenmeyer flask, no mouth beaker.
The utility model discloses a collection device for waste gas is cleared up in heating, its collection that is applicable to the test tube pollutant of various aperture sizes is handled, and the test tube, clear up the aperture of pipe or flask can be little to 5mm, and the test tube more than 5mm, clear up pipe or flask can both be suitable for.
The utility model discloses a collection device for waste gas is cleared up in heating, it still provides a simple and easy type structure, be applicable to the test tube in various apertures, clear up pipe or flask, the aperture including the test tube is less than 5 mm's test tube or flask, adopt the open corrosion-resistant cover of collecting in bottom, collect cover lateral wall upper portion and be provided with two corrosion-resistant joints, collect the cover and place and clear up the appearance top surface at flat, carry out closed cover to a plurality of bottles of clearing up, in order to carry out waste gas collection, then, recycle the aspiration pump will clear up the nitrogen oxide in the pipe via the pipeline of being connected with two corrosion-resistant joints, the sour gas is taken out, send into again and handle in the alkali.
The above is only the preferred embodiment of the present invention, not the limitation of the present invention, without departing from the spirit and scope of the present invention, all should belong to the patent protection scope of the present invention in the equal variation and modification made by the claims of the present invention.
Claims (10)
1. The utility model provides a collection device for waste gas is cleared up in heating which characterized by: the device is made of corrosion-resistant materials and comprises a rectangular box body with an open top surface, a substrate corresponding to the box body in shape is installed in the box body, the side wall of the substrate is in contact with the inner wall of the box body and is sealed and fastened, a gas collection cavity is formed between the bottom surface of the substrate and the box body due to the distance between the bottom surface of the substrate and the box body, a plurality of through holes distributed in an equidistant array are formed in the substrate, the through holes penetrate through the substrate in the vertical direction, and corrosion-resistant waste gas collection heads are; the corrosion-resistant waste gas collecting head comprises an upper end part arranged on the top surface of the substrate, and the upper end part and the substrate are integrally formed or connected together; or the corrosion-resistant waste gas collecting head is of an integrated structure or a split structure consisting of the upper end part arranged on the top surface of the substrate and the connecting part positioned in the through hole; the corrosion-resistant waste gas collecting head is provided with a longitudinal through hole; one or more corrosion-resistant joints are arranged on the side wall of the box body corresponding to the position of the gas collection cavity, and the one or more corrosion-resistant joints are connected with a tail gas absorption system or an air pump through a pipeline.
2. The collecting device for heating digestion exhaust gas according to claim 1, characterized in that: the side wall of the base plate and the inner wall of the box body are tightly assembled through screws, corrosion-resistant rubber strips, welding, corrosion-resistant adhesive or sealed and fastened in a one-step forming mode.
3. The collecting device for heating digestion exhaust gas according to claim 1, characterized in that: the box body is made of a stainless steel plate, a steel plate, an aluminum plate, a galvanized plate, a polymer material plate, or one of the stainless steel plate, the aluminum plate and the galvanized plate with Teflon or epoxy resin sprayed on the surface; the substrate is made of a stainless steel plate, a steel plate, an aluminum plate, a galvanized plate, a polymer material plate, or one of the stainless steel plate, the aluminum plate and the galvanized plate, the surface of which is sprayed with Teflon or epoxy resin, and the polymer material is fluoroplastic, polypropylene, polyethylene, copolyoxymethylene, polyvinyl chloride or nylon.
4. The collecting device for heating digestion exhaust gas according to claim 1, characterized in that: the upper end part of the corrosion-resistant waste gas collecting head is made of one of a high polymer material, corrosion-resistant rubber, glass and a corrosion-resistant metal material, and the connecting part is made of one of a high polymer material, corrosion-resistant rubber, glass and a corrosion-resistant metal material; the high polymer material is fluoroplastic, polypropylene, polyethylene, polyvinyl chloride, co-formaldehyde or nylon; the corrosion-resistant rubber is vinylidene fluoride series fluorine rubber, tetrafluoroethylene-propylene series fluorine rubber, perfluoro rubber, fluorosilicone rubber, fluorine-containing phosphazene rubber, silica gel, ethylene propylene diene monomer rubber, butyronitrile, latex or common rubber.
5. The collecting device for heating digestion exhaust gas according to claim 1, characterized in that: the connecting mode of the corrosion-resistant waste gas collecting head and the mouth of the digestion tube, the test tube, the sample cup, the flask or the conical flask is a pipe inlet type, the upper end part of the corrosion-resistant waste gas collecting head is a round platform body with a small upper part and a big lower part, the top surface of the corrosion-resistant waste gas collecting head is a plane, the round platform body with a small upper part and a big lower part and the top surface of the corrosion-resistant waste gas collecting head is an inwards concave curved surface, or the round platform body with a small upper part and a; the axle center of the round table body is provided with a longitudinal through hole, the inner diameter of the small end of the round table body is smaller than the inner diameter of the pipe orifice of the digestion pipe, the test tube, the sample cup, the flask or the conical flask, and the inner diameter of the large end of the round table body is larger than the inner diameter of the pipe orifice of the digestion pipe, the test tube, the sample cup, the flask or the conical flask.
6. The collecting device for heating digestion exhaust gas according to claim 1, characterized in that: the corrosion-resistant waste gas collecting head is connected with the mouths of the digestion tubes, test tubes, sample cups, flasks or conical bottles in a mode of covering the mouths of the tubes, the upper end part of the corrosion-resistant waste gas collecting head is a cylinder, the top surface of the corrosion-resistant waste gas collecting head is a plane, the cylinder is a concave curved surface at the center of the top surface, the cylinder is a convex curved surface at the center of the top surface, and the cylinder is a concave circular hole surface at the center of the top surface; the axis of the cylinder is provided with a longitudinal through hole, and the inner diameter of the cylinder is more than or equal to the inner diameter of the pipe orifice of the digestion pipe, the test tube, the sample cup, the flask or the conical flask.
7. The collecting device for heating digestion exhaust gas according to claim 1, 5 or 6, characterized in that: the connecting part of the corrosion-resistant waste gas collecting head consists of a thread section at the upper part and a polish rod section at the lower part, the inner wall of a through hole on the substrate is correspondingly provided with threads, the thread section is connected with the through hole through threads, and the end part of the polish rod section is flush with the bottom surface of the substrate or extends into the gas collecting cavity.
8. The collecting device for heating digestion exhaust gas according to claim 1, 5 or 6, characterized in that: the connecting part of the corrosion-resistant waste gas collecting head consists of a polish rod section at the upper part and a threaded section at the lower part, the polish rod section is arranged in a through hole on the substrate in a penetrating way, the threaded section extends into a gas collecting cavity below the bottom surface of the substrate, and the threaded section is sleeved with a nut.
9. The collecting device for heating digestion exhaust gas according to claim 8, characterized in that: a spring is sleeved on the polish rod section, and the polish rod section sleeved with the spring is arranged in the through hole on the substrate in a penetrating manner; a locking mechanism is arranged between the rectangular box body and the mounting rack of the digestion tube.
10. The utility model provides a collection device for waste gas is cleared up in heating which characterized by: the device adopts a corrosion-resistant collecting cover with an open bottom, one or more corrosion-resistant joints are arranged on the upper part of the side wall of the collecting cover, the collecting cover is placed on the top surface of a flat plate type digestion instrument to carry out closed covering on a plurality of digestion bottles, and the one or more corrosion-resistant joints are connected with a tail gas absorption system or an air pump through pipelines.
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| CN201920621507.7U CN210071476U (en) | 2019-04-30 | 2019-04-30 | Collection device for waste gas is cleared up in heating |
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| CN201920621507.7U CN210071476U (en) | 2019-04-30 | 2019-04-30 | Collection device for waste gas is cleared up in heating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044681A (en) * | 2019-04-30 | 2019-07-23 | 李立华 | A kind of heating resolution exhaust gas collection device |
| CN111272532A (en) * | 2020-02-18 | 2020-06-12 | 张振江 | Full-automatic digestion acid dispelling instrument |
-
2019
- 2019-04-30 CN CN201920621507.7U patent/CN210071476U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044681A (en) * | 2019-04-30 | 2019-07-23 | 李立华 | A kind of heating resolution exhaust gas collection device |
| CN111272532A (en) * | 2020-02-18 | 2020-06-12 | 张振江 | Full-automatic digestion acid dispelling instrument |
| CN111272532B (en) * | 2020-02-18 | 2023-06-09 | 张振江 | Full-automatic digestion acid-removing instrument |
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