CN211825687U - Furnace body cover plate - Google Patents
Furnace body cover plate Download PDFInfo
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- CN211825687U CN211825687U CN201921882320.9U CN201921882320U CN211825687U CN 211825687 U CN211825687 U CN 211825687U CN 201921882320 U CN201921882320 U CN 201921882320U CN 211825687 U CN211825687 U CN 211825687U
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- cover plate
- furnace
- furnace body
- body cover
- inner groove
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Abstract
The utility model provides a furnace body cover plate which is used in an atomizer for atomic fluorescence analysis, a buckle is arranged on the furnace body cover plate and is matched and assembled with other parts, and screws are not needed for fastening during installation; and the lower end face of the furnace body cover plate is provided with a step-shaped inner groove, so that the electric furnace wire and the heat insulation material at the opening of the quartz furnace can be conveniently fixed. The utility model discloses a furnace body apron has promoted the holistic quality of atomizer.
Description
Technical Field
The utility model belongs to the analytical chemistry field relates to atomic fluorescence analytical equipment's part, in particular to furnace body apron of atomizer among the atomic fluorescence analytical equipment.
Background
Atomic fluorescence analysis has been widely used for the determination of trace amounts of As, Sb, Bi, Hg, Se, and the like. The basic principle is that ions of an element to be detected in an acidic medium (usually hydrochloric acid) react with a strong reducing agent (usually potassium borohydride or sodium borohydride) to be reduced into gaseous hydride or atoms, and a large amount of hydrogen is generated. The hydride molecules are dissociated into ground state atoms in the high-temperature hydrogen flame and excited to a high energy state by radiation of a specific frequency of an excitation light source, and the excited state atoms emit fluorescence of a characteristic wavelength in the form of light radiation in the de-excitation process due to extreme instability of the high energy level. The fluorescence intensity is correlated with the concentration of the element to be detected, and the concentration of the element to be detected is obtained by measuring the fluorescence signal of the element to be detected by a detector (usually a photomultiplier).
The atomic fluorescence analysis device (also called atomic fluorescence instrument, atomic fluorescence photometer and atomic fluorescence spectrometer) designed according to the principle mainly comprises a transfusion system, a steam generation system (or called reactor), an atomizer, an excitation light source and a detection system. The test solution and the reducing agent are conveyed through the liquid conveying system and are carried by carrier liquid (also called carrier liquid) to be fed into the reactor to carry out chemical reaction, and the generated gaseous hydride molecules and hydrogen enter the atomizer under the carrying of the carrier gas (usually argon).
The atomization of hydride relies on the high temperature of the hydrogen flame, and the atomization process is performed with reference to an atomizer. The atomizer comprises a furnace body, a quartz furnace arranged in the furnace body, furnace wires at the opening of the quartz furnace tube, a furnace body cover plate on the furnace body and other conventional parts, wherein the parts are mostly fastened by using screws, so that the disassembly, the assembly and the maintenance are inconvenient; the existing furnace body cover plate is made of metal materials, the furnace body is always in a high-temperature state due to continuous hydrogen flame in detection, the temperature of the furnace body cover plate is high, the temperature of the whole working environment of an instrument is increased, the service life is influenced, more seriously, the temperature of the working environment is increased, the baseline drift is caused, the detection is influenced, and in the process of stopping working, the furnace body cover plate is high in temperature, and can be detached and maintained only by being cooled for a long time, so that the working efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a furnace body apron that is arranged in the atomizer among the atomic fluorescence analytical equipment to effectively solve above-mentioned problem.
The utility model adopts the technical proposal that:
a furnace body cover plate is used in an atomizer for atomic fluorescence analysis, the atomizer comprises a quartz tube, a furnace body outer cover, a furnace body cover plate and electric furnace wires, and is characterized in that the furnace body cover plate comprises a cover plate body (41) and at least two buckles (42) arranged on the circumference of the cover plate body (41); the furnace body cover is characterized in that the buckle (42) is used for being clamped with the upper end of the furnace body cover, and a center hole (411) corresponding to the opening of the quartz furnace is formed in the center of the cover plate body (41).
An annular bulge (412) is arranged on the upper end surface of the cover plate body (41), and an inner groove (415) for accommodating an electric stove wire is arranged on the lower end surface of the cover plate body (41); the annular protrusion (412) and the inner groove (415) are arranged around the central hole (411), and a plurality of convex blocks (413) are arranged on the inner side face, in contact with the central hole (411), of the top end of the annular protrusion (412) and used for resisting an electric furnace wire.
The inner grooves (415) are of a step type and comprise a first inner groove (4151), a second inner groove (4152) and a third inner groove (4153) which are sequentially stepped from outside to inside, wherein the first inner groove (4151) and the second inner groove (4152) are used for accommodating the heat-insulating ceramic layer, and the third inner groove (4153) is used for accommodating the electric stove wire.
Two cutting grooves (416) are arranged on the third inner groove (4153) and used for arranging the electric stove wire.
Two furnace wire holes (414) are also arranged on the annular bulge (412) and used for penetrating electric furnace wires; and the two cutting grooves (416) are respectively communicated with the two furnace wire holes (414).
The cover plate body (41) is further provided with two through holes (417), the two through holes (417) and the two furnace wire holes (414) are respectively aligned, and fixing grooves (418) are respectively arranged on the lower end face of the cover plate body (41) at the positions of the two through holes (417).
The furnace body cover plate further comprises two screws and two nuts, the screws are screwed in the through holes (417), and the nuts are screwed on the screws and located in the fixing grooves (418).
The buckle (42) is arranged on the lower end face of the cover plate body (41) and extends out of the cover plate body (41).
The number of the buckles (42) is 2, and the buckles are evenly distributed on the circumference of the cover plate body (41).
The number of the convex blocks (413) is 3, and the convex blocks are evenly distributed on the inner side face, in contact with the central hole (411), of the top end of the annular bulge (412).
By adopting the scheme, the furnace body cover plate of the utility model adopts the non-metallic material (such as ceramic material) which has excellent heat dispersion and is completely insulated, and can be disassembled and maintained without cooling after stopping working, thereby improving the working efficiency, and the temperature of the furnace body cover plate can not be too high in the working process, thereby overcoming the phenomenon of baseline drift; the lower part of the furnace body cover plate is matched and assembled with other parts, and the furnace body cover plate is not required to be fastened by screws during installation and can be integrally disassembled, assembled and maintained; and the stepped inner groove is arranged on the lower end surface of the furnace body cover plate, so that furnace wires at the pipe orifice of the quartz furnace can be conveniently fixed, and heat insulation materials such as mica, ceramics and the like can be conveniently filled between the furnace body cover plate and the top end surface of the quartz furnace outer sleeve of the atomizer, so that the furnace wires at the pipe orifice of the quartz furnace can be supported, and the furnace wires are ensured to be positioned at the pipe orifice of the quartz furnace to ignite hydrogen according to the heat of the furnace wires. The utility model discloses a furnace body apron has promoted the holistic quality of atomizer.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of the atomizer part structure using the cover plate of the present invention;
FIG. 2 is a schematic cross-sectional view of an atomizer using the cover plate of the present invention;
FIG. 3 is a schematic view of the appearance structure of the inner end face of the furnace body cover plate of the present invention;
FIG. 4 is a schematic view of the outer end surface appearance structure of the furnace body cover plate of the present invention;
FIG. 5 is a schematic view of the appearance structure of the cover plate of the furnace body of the present invention;
the reference signs are:
the quartz furnace comprises a quartz furnace outer sleeve 1, an inner groove 12, a top end surface 13 and a vertical cutting groove 14;
the furnace body outer cover 2, a clamping groove 22 and a long groove 23;
the quartz furnace 3, the inner pipe joint 31, the outer pipe joint 32 and the pipe orifice end 33 of the quartz furnace;
the furnace body cover plate 4, the cover plate body 41, the buckle 42, the central hole 411, the annular protrusion 412, the bump 413, the furnace wire hole 414, the stepped inner groove 415, the first inner groove 4151, the second inner groove 4152, the third inner groove 4153, the cutting groove 416, the through hole 417 and the fixing groove 418;
a furnace body support 5;
a heat insulation layer 6, a ceramic sheet 61, a mica sheet 62 and a ceramic fiber rope 63;
and an electric furnace wire 7.
Detailed Description
The present invention is illustrated in detail by the following specific examples.
The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, and the embodiment will help understanding the present invention, but should not be taken as a limitation to the content of the present invention.
As shown in fig. 1-5, the utility model discloses a furnace body apron 4 (the following detailed description) that is arranged in atomic fluorescence analysis uses the atomizer, one of them atomizer is as shown in fig. 1 and fig. 2, including quartz furnace outer cover 1, the quartz furnace 3 of suit in quartz furnace outer cover 1, the furnace body dustcoat 2 of suit outside quartz furnace outer cover 1, with the furnace body apron 4 of furnace body dustcoat 2 upper end joint, inlay the electric stove silk 7 between furnace body apron 4 and quartz furnace 3 mouth of pipe, still include the ceramic insulating layer 6 of packing between furnace body apron 4 and quartz furnace outer cover 1 top end face, above-mentioned parts constitute the furnace body part, establish furnace body support 5 in addition in the furnace body bottom and be used for supporting the furnace body. Here:
the quartz furnace 3 is a commercially available product, and is a sleeve composed of a central tube (inner tube) and an outer tube which are separated from each other, the upper ends of the inner tube and the outer tube are open, the inner tube is short, the end surface of the outer tube serves as a tube opening end 33 of the quartz furnace, and the lower end of the outer tube is provided with an inner tube joint 31 and an outer tube joint 32 respectively.
The quartz furnace 3 is sleeved in the quartz furnace outer sleeve 1, a pipe orifice 33 of the quartz furnace extends upwards out of the top end surface 13 of the quartz furnace outer sleeve 1, and the lower part of the quartz furnace outer sleeve 1 is matched with the upper part of the furnace body support 5. As shown in FIG. 2, the quartz furnace jacket 1 may be provided with an inner groove 12 at the upper portion thereof for accommodating a ceramic insulating layer, i.e., a centrally extending platform is formed inside the cavity, as shown in FIG. 2, where a ceramic fiber string 63 is accommodated. In addition, the upper part of the quartz furnace jacket 1 is also symmetrically provided with a plurality of (two or four) vertical cutting grooves 14 for inserting and positioning the buckle 42 on the furnace body cover plate 4.
The furnace body outer cover 2 is cylindrical and is sleeved on the periphery of the quartz furnace outer cover 1, the bottom of the furnace body outer cover is abutted against the furnace body support 5, the upper part of the furnace body outer cover is symmetrically provided with a plurality of (two or four) L-shaped clamping grooves 22 so as to be conveniently clamped and buckled with the buckles 42 arranged on the side edge of the furnace body cover plate 4, the vertical grooves of the clamping grooves 22 are convenient for the buckles 42 to move downwards, and the transverse grooves are used for fixing the buckles 42 after the buckles; the clamping grooves 22 are symmetrically arranged, and the number and the positions of the clamping grooves correspond to the fasteners 42 of the furnace body cover plate 4 and the vertical cutting grooves 14 on the upper part of the quartz furnace outer sleeve 1. In order to fit the electric stove wire 7 nested on the stove body cover plate 4, the upper part of the stove body outer cover 2 is provided with a long groove 23, and the long groove 23 is staggered with the position of the clamping groove 22 but is aligned with a fixed slotted hole (a through hole 417 and a fixed groove 418, described below) formed on the stove body cover plate 4 for fixing a lead connector of the electric stove wire 7.
As shown in fig. 3, fig. 4 and fig. 5, the utility model provides a structural schematic diagram of the furnace body cover plate 4 is shown, it includes that the cover plate body 41 and symmetry set up in at least two (also can be three or four) buckles 42 of the cover plate body 41 circumference side, the buckle 42 sets up on the lower terminal surface of the cover plate body 41, and stretch out the cover plate body 41, the buckle 42 is used for clamping in the draw-in groove 22 that the furnace body dustcoat 2 upper end set up, with furnace body cover plate 4 and furnace body dustcoat 2 joint. The center of the cover plate body 41 is provided with a center hole 411, the aperture of the center hole 411 is matched with the aperture of the outer tube of the quartz furnace 3, the upper end surface of the cover plate body 41 is provided with an annular protrusion 412, the annular protrusion 412 is arranged around the center hole 411, and the inner side surface of the top end of the annular protrusion 412, which is in contact with the center hole 411, is provided with a plurality of protrusions 413 (at least two), for example, three protrusions 413 which are evenly distributed on the inner side surface, the protrusions 413 can restrict the tube opening of the quartz furnace 3, and can also fix and restrict the electric furnace wire 7 which is sleeved in the inner groove of the inner end surface of the furnace body cover plate 4. Two furnace wire holes 414 are further formed in the annular protrusion 412, for example, the furnace wire holes 414 are formed in the outer side surface of the annular protrusion 412 and used for penetrating the electric furnace wire 7, so that the electric furnace wire 7 is conveniently connected with an external power supply; two through holes 417, for example, two screw holes, are further respectively opened at the peripheral portion of the cover body 41, and fixing grooves 418 are further respectively provided at the lower end surface of the cover body 41 where the two through holes 417 are located, the through holes 417 and the fixing grooves 418 are used for installing screws and nuts, for example, wherein the screws pass through the two through holes 417, and the nuts are located in the fixing grooves 418 to fix the electric stove wire 7 protruding from the stove wire hole 414 of the stove body cover 4 and connect with an external power source. The lower end face of the cover plate body 41 is provided with a step-shaped inner groove 415 which is used for accommodating a heat-insulating ceramic layer positioned between the furnace body cover plate 4 and the top end face of the quartz furnace outer sleeve 1 and is used for restraining and fixing the electric furnace wire 7 at the pipe orifice of the quartz furnace 3 so as to ensure that the electric furnace wire 7 at the pipe orifice of the quartz furnace ignites hydrogen according to heat of the electric furnace wire. The stepped inner groove 415 is arranged around the central hole 411 and comprises a first inner groove 4151, a second inner groove 4152 and a third inner groove 4153 which are sequentially stepped from outside to inside, wherein the electric stove wire 7 is embedded in the third inner groove 4153, two cutting grooves 416 which are transverse to the third inner groove 4153 are arranged on the third inner groove 4153, and the two cutting grooves 416 are respectively communicated with two stove wire holes 414 formed on the annular protrusion 412 and used for leading out two end joints of the electric stove wire 7. The first inner groove 4151 and the second inner groove 4152 are used for filling different materials of the heat insulating layer.
The electric furnace wire 7 is nested in a third inner groove 4153 arranged on the inner end surface of the furnace body cover plate 4, two end joints of the electric furnace wire 7 penetrate out of two furnace wire holes 414 and are fixed at the positions of the through hole 417 and the fixing groove 418 to be connected with a power line for ignition and electrification outside, the upper end of the electric furnace wire 7 is blocked by a lug 413, and the lower end of the electric furnace wire 7 is supported and fixed on the periphery of the tube opening end 33 of the quartz furnace 3 through a heat insulation layer material filled between the furnace body cover plate 4 and the top end surface of the quartz furnace jacket 1. The heat insulation layer does not use asbestos materials, and can be made of one or a plurality of insulating and heat insulating materials such as ceramic sheets, ceramic fibers and mica sheets, the shape of the heat insulation layer is changed along with the shape of the filled gap, for example, fig. 2 shows a heat insulation layer 6 formed by sequentially stacking a ceramic fiber rope 63, a mica sheet 62 and a ceramic sheet 61, wherein the ceramic fiber rope 63 is embedded into an inner groove 12 at the upper part of the quartz furnace jacket 1, and the mica sheet 62 and the ceramic sheet 61 can be respectively filled in the gap between the upper part of the tube opening end of the quartz furnace and the first inner groove 4151 and the second inner.
The above components were assembled in the following manner: the upper part of the quartz furnace 3 is sleeved into the inner cavity of the quartz furnace outer sleeve 1 from bottom to top, the bottoms of the quartz furnace outer sleeve 1 and the quartz furnace 3 are sleeved into the upper part of the furnace body support 5, and the inner pipe joint 31 and the outer pipe joint 32 of the quartz furnace 3 are clamped into the furnace body support 5; the electric furnace wire 7 is arranged on the lower end face of the furnace body cover plate 4 and is fixed with a joint, the furnace body cover plate 4 is clamped on the upper end of the furnace body outer cover 2 by utilizing the buckle 42 and the clamping groove 22, the heat insulation layer 6 is filled from the upper end of the quartz furnace outer sleeve 1 to the pipe orifice space of the quartz furnace 2, finally the furnace body outer cover 2 is sleeved outside the quartz furnace outer sleeve 1, the buckle 42 of the upper furnace body cover plate 4 is aligned and inserted with the vertical cutting groove 14 of the quartz furnace outer sleeve 1, and the lower end edge is abutted against the furnace body support 5. The atomizer that the assembly was accomplished uses structures such as draw-in groove to realize fixing between the part and need not traditional screw in the assembly, and the installation is simple, is convenient for maintain and change.
In the novel atomizer, the furnace body cover plate 4 is made of insulating and heat-resistant non-metallic materials (such as ceramic materials), metal materials are not used, the situation that parts with high furnace body temperature are scalded due to hydrogen flame combustion in use is avoided, so that the furnace body is made of non-metallic materials with excellent heat dissipation performance and complete insulation, maintenance can be carried out without cooling after stopping working, the phenomenon of baseline drift is overcome due to the fact that the temperature of the furnace body is not too high in the working process, and the device is good in working stability; the atomizer components are assembled in a matched mode, and the atomizer can be integrally disassembled, assembled and maintained through the matching of the clamping grooves without the need of screw fastening.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A furnace body cover plate is used in an atomizer for atomic fluorescence analysis, the atomizer comprises a quartz tube, a furnace body outer cover, a furnace body cover plate and electric furnace wires, and is characterized in that the furnace body cover plate comprises a cover plate body (41) and at least two buckles (42) arranged on the circumference of the cover plate body (41); the furnace body cover is characterized in that the buckle (42) is used for being clamped with the upper end of the furnace body cover, and a center hole (411) corresponding to the opening of the quartz furnace is formed in the center of the cover plate body (41).
2. The furnace body cover plate according to claim 1, characterized in that an annular protrusion (412) is arranged on the upper end surface of the cover plate body (41), and an inner groove (415) for accommodating an electric furnace wire is arranged on the lower end surface of the cover plate body (41); the annular protrusion (412) and the inner groove (415) are arranged around the central hole (411), and a plurality of convex blocks (413) are arranged on the inner side face, in contact with the central hole (411), of the top end of the annular protrusion (412) and used for resisting an electric furnace wire.
3. The furnace body cover plate according to claim 2, wherein the inner grooves (415) are stepped and comprise a first inner groove (4151), a second inner groove (4152) and a third inner groove (4153) which are stepped from outside to inside, wherein the first inner groove (4151) and the second inner groove (4152) are used for accommodating the heat-insulating ceramic layer, and the third inner groove (4153) is used for accommodating the electric furnace wires.
4. The furnace body cover plate according to claim 3, characterized in that two cutting grooves (416) are formed on the third inner groove (4153) for accommodating electric furnace wires.
5. The furnace body cover plate according to claim 4, characterized in that two furnace wire holes (414) are arranged on the annular protrusion (412) for passing electric furnace wires; and the two cutting grooves (416) are respectively communicated with the two furnace wire holes (414).
6. The furnace body cover plate according to claim 5, wherein two through holes (417) are further arranged on the cover plate body (41), the two through holes (417) are respectively aligned with the two furnace wire holes (414), and fixing grooves (418) are respectively arranged on the lower end surface of the cover plate body (41) at the positions of the two through holes (417).
7. The furnace body cover according to claim 6, further comprising two screws screwed into the through holes (417) and two nuts screwed onto the screws and located in the fixing grooves (418).
8. The furnace body cover according to any one of claims 1-7, characterized in that the snap (42) is arranged on the lower end face of the cover body (41) and protrudes out of the cover body (41).
9. The furnace body cover plate according to any one of claims 1 to 7, wherein the number of the snap fasteners (42) is 2, and the snap fasteners are evenly distributed on the circumference of the cover plate body (41).
10. The furnace body cover plate according to any one of claims 2 to 7, wherein the number of the projections (413) is 3, and the projections are evenly distributed on the inner side surface of the top end of the annular protrusion (412) contacting with the central hole (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921882320.9U CN211825687U (en) | 2019-11-04 | 2019-11-04 | Furnace body cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921882320.9U CN211825687U (en) | 2019-11-04 | 2019-11-04 | Furnace body cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211825687U true CN211825687U (en) | 2020-10-30 |
Family
ID=73147361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921882320.9U Active CN211825687U (en) | 2019-11-04 | 2019-11-04 | Furnace body cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211825687U (en) |
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2019
- 2019-11-04 CN CN201921882320.9U patent/CN211825687U/en active Active
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