CN211613773U - Explosion-proof processing apparatus of metal powder - Google Patents
Explosion-proof processing apparatus of metal powder Download PDFInfo
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- CN211613773U CN211613773U CN201920988951.2U CN201920988951U CN211613773U CN 211613773 U CN211613773 U CN 211613773U CN 201920988951 U CN201920988951 U CN 201920988951U CN 211613773 U CN211613773 U CN 211613773U
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Abstract
A metal powder explosion-proof processing device; comprises a reaction kettle, the upper part of which is sealed and is provided with a first feeding port and a second feeding port; the stirring device comprises a stirring shaft and a driving mechanism; the stirring shaft vertically extends into the reaction kettle and is provided with a plurality of stirring blades; the upper section of the inner wall of the reaction kettle is provided with an exhaust part along the circumferential direction, is communicated with an exhaust pipeline and is used for exhausting gas to the atmosphere through the exhaust pipeline; the bottom of the reaction kettle is provided with a discharge hole which is communicated with a centrifuge, and solid-liquid separation and discharge are carried out through the centrifuge; the reaction kettle is also provided with a guide cover cylinder, the upper end of the guide cover cylinder is sealed by a cover plate, the lower end of the guide cover cylinder has a height difference with the mixture in the reaction kettle, and the side wall of the guide cover cylinder and the inner wall of the reaction kettle are arranged at intervals; the cover plate is provided with a plurality of gas injection ports, and the gas is injected through a gas source to form downward airflow in the guide cover cylinder. The utility model discloses degree of automation is high, has solved the difficult problem of handling of metal powder, has eliminated the danger source, and the hydrogen that the reaction generated is controllable, discharges safely.
Description
Technical Field
The utility model relates to a metal powder handles technical field, concretely relates to metal powder explosion-proof processing apparatus. The metal powder includes but is not limited to aluminum powder and magnesium powder.
Background
In the production link of industrial casting, metal dust generated by surface treatment has the risk of deflagration, and is recently classified as a key supervision and remediation object for safety production in various regions by the national safety supervision department.
The traditional dust collection methods include a dry collection method and a wet collection method, although both collection methods can collect metal dust, the collected metal powder is easy to deflagrate, and is easy to react with water to generate hydrogen after contacting moisture, and the hydrogen is also flammable and explosive gas, so that the metal powder is not convenient to store and transport. Therefore, how to realize the safe and harmless treatment of the metal powder in a localized way is still a difficult problem in the industry, and a reasonable solution is not provided.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing a metal powder explosion-proof processing apparatus.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a metal powder explosion-proof processing device; comprises a reaction kettle, the upper part of the reaction kettle is closed, and a first feeding port and a second feeding port are arranged on the reaction kettle; the first feeding port is used for feeding quantitative metal powder, and the second feeding port is used for feeding quantitative liquid medicine;
the stirring device comprises a stirring shaft and a driving mechanism for driving the stirring shaft to rotate; the stirring shaft vertically extends into the reaction kettle and is positioned at the center of the cross section of the reaction kettle; the stirring shaft is connected with a plurality of stirring blades and is used for stirring the mixture of the metal powder and the liquid medicine in the reaction kettle to promote the reaction;
the upper section of the inner wall of the reaction kettle is provided with an exhaust part along the circumferential direction, the exhaust part is communicated with an exhaust pipeline, the exhaust pipeline performs air extraction through an air extraction pump, and the extracted air is discharged to the atmosphere through an exhaust end of the exhaust pipeline;
the bottom of the reaction kettle is provided with a discharge hole for discharging a solid-liquid mixture generated by the reaction; the discharge port is communicated with a centrifuge, solid-liquid separation is carried out through the centrifuge, and a liquid outlet and a solid outlet are arranged for respectively discharging solid and liquid;
wherein, a draft hood cylinder is also arranged in the reaction kettle, the upper end of the draft hood cylinder is sealed by a cover plate, the lower end of the draft hood cylinder has a height difference with the mixture in the reaction kettle, and the side wall of the draft hood cylinder and the inner wall of the reaction kettle are arranged at intervals; the cover plate is provided with a plurality of gas injection ports, and each gas injection port supplies gas through a gas source, so that a downward gas flow is formed in the flow guide cover cylinder.
The relevant content in the above technical solution is explained as follows:
1. in the scheme, the first feeding port carries out quantitative feeding through a vibration feeding sieve, and the discharging of the vibration feeding sieve is introduced into the reaction kettle through a first feeding pipeline.
2. In the scheme, a weighing disc is further arranged corresponding to the vibration feeding sieve, a quality sensing device is arranged at the bottom of the weighing disc, and the quality sensing device is electrically connected with a control circuit; the first feeding pipeline is controlled to be on and off through a first valve, and the first valve is electrically connected with the control circuit.
3. In the scheme, the second feeding port carries out quantitative feeding through a liquid medicine barrel, and feeding of the liquid medicine barrel is led into the reaction kettle through a second feeding pipeline.
4. In the above scheme, the second feeding pipeline is controlled to be switched on and off through a second valve, and the second valve is electrically connected with the control circuit.
5. In the above scheme, the discharge port is communicated with the centrifuge through a discharge pipeline, the discharge pipeline is controlled to be on and off through a third valve, and the third valve is electrically connected with the control circuit.
6. In the above scheme, the exhaust part is a plurality of exhaust holes, each exhaust hole is uniformly distributed along the circumferential direction of the upper section of the inner wall of the reaction kettle, and each exhaust hole is communicated with the exhaust pipeline.
7. In the above scheme, the exhaust part is an exhaust groove, and the exhaust groove is formed along the circumferential direction of the upper section of the inner wall of the reaction kettle and is communicated with the exhaust pipeline.
8. In the above scheme, be equipped with hydrogen concentration detector in the exhaust pipe, this hydrogen concentration detector and a control circuit electric connection for detect the concentration of hydrogen in the exhaust mist.
9. In the above scheme, still be equipped with the PH detecting element among the reation kettle, this PH detecting element and a control circuit electric connection for detect solid-liquid mixture's real-time PH value.
The utility model discloses a theory of operation and advantage as follows:
the utility model relates to a metal powder explosion-proof treatment device; comprises a reaction kettle, the upper part of which is sealed and is provided with a first feeding port and a second feeding port; the stirring device comprises a stirring shaft and a driving mechanism; the stirring shaft vertically extends into the reaction kettle and is provided with a plurality of stirring blades; the upper section of the inner wall of the reaction kettle is provided with an exhaust part along the circumferential direction, is communicated with an exhaust pipeline and is used for exhausting gas to the atmosphere through the exhaust pipeline; the bottom of the reaction kettle is provided with a discharge hole which is communicated with a centrifuge, and solid-liquid separation and discharge are carried out through the centrifuge; the reaction kettle is also provided with a guide cover cylinder, the upper end of the guide cover cylinder is sealed by a cover plate, the lower end of the guide cover cylinder has a height difference with the mixture in the reaction kettle, and the side wall of the guide cover cylinder and the inner wall of the reaction kettle are arranged at intervals; the cover plate is provided with a plurality of gas injection ports, and the gas is injected through a gas source to form downward airflow in the guide cover cylinder.
Compared with the prior art, the utility model solves the problem of difficult treatment of the metal powder and eliminates the danger source through the innovative design of the metal powder explosion-proof treatment device; on the other hand, hydrogen generated by reaction in the treatment process is mixed with air through a specially designed air introducing structure, so that the concentration of the hydrogen is reliably controlled within a safety standard range, and finally high-altitude harmless safe discharge is carried out; the liquid generated by the reaction has no explosion danger and can be recycled as a byproduct of powder treatment; the solid produced by the reaction has no explosion danger and can be treated according to the conventional solid waste.
To sum up, the utility model discloses it is ingenious to have structural design, and powder treatment is effectual, and the processing procedure security is high and practical progress nature such as degree of automation height.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a reaction kettle according to an embodiment of the present invention;
fig. 3 is a schematic top view of fig. 2.
In the above drawings: 1. a reaction kettle; 2. a cover plate; 3. a first feeding port; 4. a second feeding port; 5. vibrating a feeding screen; 6. a first feed conduit; 7. a first valve; 8. a liquid medicine barrel; 9. a feed pump; 10. a second feed conduit; 11. a second valve; 12. a stirring shaft; 13. a drive mechanism; 14. a stirring paddle; 15. an exhaust line; 16. an air pump; 17. an exhaust end; 18. an exhaust hole; 19. a gas-collecting hood; 20. a discharge port; 21. a centrifuge; 22. a liquid outlet; 23. a solids outlet; 24. a discharge pipeline; 25. a third valve; 26. a draft shield cylinder; 27. a gas injection port; 28. a hydrogen concentration detector; 29. and a jacket.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
The terms "front", "rear", "upper", "lower", "left" and "right" used herein are directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the specific direction of the protective reaction and the practical implementation of the present invention.
Referring to the attached drawings 1-3, an explosion-proof treatment device for metal powder; comprises a reaction kettle 1, wherein the upper part of the reaction kettle 1 is provided with a cover plate 2 and a first feed opening 3 and a second feed opening 4; the first feeding port 3 is used for feeding a certain amount of metal powder, such as magnesium powder, aluminum powder and the like. The second feeding port 4 is used for feeding a quantitative liquid medicine, and the liquid medicine is acid liquor or alkali liquor. Specifically, HCl is selected as the liquid medicine when the metal powder is magnesium powder, NaOH is selected when the metal powder is aluminum powder, and hydrogen is generated through reaction.
When the device is operated for the first time, enough liquid medicine is firstly put into the reaction kettle through the second feeding port 4, and then metal powder is put into the reaction kettle 1 through the first feeding port 3.
The first feeding port 3 is used for quantitative feeding through a vibration feeding sieve 5, and the discharging of the vibration feeding sieve 5 is introduced into the reaction kettle 1 through a first feeding pipeline 6.
A weighing disc (not shown) is arranged corresponding to the vibrating feeding screen 5, and a mass sensing device is arranged at the bottom of the weighing disc and is electrically connected with a control circuit; the first feeding pipeline 6 is controlled to be on or off through a first valve 7, and the first valve 7 is electrically connected with the control circuit. When the weighing disc obtains a set mass of metal powder through accumulation of the vibrating feeding sieve 5, the numerical value fed back to the control circuit by the mass sensing device at the moment accords with the preset value of opening of the first valve 7, and the control circuit controls the first valve 7 to be opened, so that the metal powder is accurately and quantitatively fed into the reaction kettle 1.
Wherein, the second feeding port 4 carries out quantitative feeding through a liquid medicine barrel 8, the feeding of the liquid medicine barrel 8 is pumped into a second feeding pipeline 10 through a feeding pump 9 and then enters the inside of the reaction kettle 1. The second feeding pipeline 10 is controlled to be on or off through a second valve 11, and the second valve 11 is electrically connected with the control circuit. The second valve 11 is opened at regular time by the control circuit to realize that the liquid medicine in the liquid medicine barrel 8 quantitatively flows into the reaction kettle 1.
The stirring device comprises a stirring shaft 12 and a driving mechanism 13 for driving the stirring shaft 12 to rotate, wherein the driving mechanism 13 can be a motor; the stirring shaft 12 vertically extends into the reaction kettle 1 and is positioned at the center of the cross section of the reaction kettle 1; the stirring shaft 12 is connected with a plurality of stirring blades 14 for stirring the mixture of the metal powder and the liquid medicine in the reaction kettle 1 to promote the reaction.
The upper segment of reation kettle 1 inner wall is equipped with exhaust portion along the circumferencial direction, and this exhaust portion communicates with an exhaust pipeline 15, and this exhaust pipeline 15 draws air through an aspiration pump 16, and the gas of drawing is the mist of hydrogen and air, and this mist discharges to the atmosphere through exhaust end 17 of exhaust pipeline 15.
The exhaust part is provided with a plurality of exhaust holes 18, each exhaust hole 18 is uniformly distributed along the circumferential direction of the upper section of the inner wall of the reaction kettle 1, and each exhaust hole 18 is communicated with the exhaust pipeline 15 through a gas collecting hood 19.
Alternatively, the exhaust unit is an exhaust duct (not shown) that is opened in the circumferential direction of the upper section of the inner wall of the reaction vessel 1 and communicates with the exhaust line 15 through a gas collecting hood 19.
Preferably, the exhaust end 17 is arranged vertically upwards, and preferably at least one meter higher than the ridge of the building where the device is located, so as to realize high-altitude exhaust. The density of hydrogen is little, and high altitude is discharged not only helps promoting discharge rate, has more guaranteed the security.
The bottom of the reaction kettle 1 is provided with a discharge hole 20 for discharging a solid-liquid mixture generated by the reaction; the discharge port 20 is communicated with a centrifuge 21, solid-liquid separation is carried out through the centrifuge 21, and a liquid outlet 22 and a solid outlet 23 are arranged to discharge solid and liquid respectively, so that the liquid can be recycled in the following process, and solid waste treatment is carried out on the solid.
The discharge port 20 is communicated with the centrifuge 21 through a discharge pipeline 24, the discharge pipeline 24 is controlled to be on or off through a third valve 25, and the third valve 25 is electrically connected with the control circuit. The third valve 25 is opened at regular time by the control circuit to realize that the solid-liquid mixture in the reaction kettle 1 flows into the centrifuge 21.
As shown in fig. 2, a draft hood cylinder 26 is further disposed in the reaction kettle 1, the draft hood cylinder 26 is fixed relative to the reaction kettle 1, the upper end of the draft hood cylinder 26 is sealed by a hood plate 2, the lower end of the draft hood cylinder has a height difference with the mixture in the reaction kettle 1, and the side wall of the draft hood cylinder 26 is spaced from the inner wall of the reaction kettle 1; the cover plate 2 is provided with a plurality of gas injection ports 27, and each gas injection port 27 supplies gas through a gas source, so that a downward gas flow is formed in the flow guide cover cylinder 26. After the air source injects the air into the reaction kettle 1 through the diversion cover cylinder 26, the air firstly goes downwards in the diversion sleeve 26, then goes around to the outer side of the diversion sleeve 26 through the lower end opening of the diversion sleeve 26, goes upwards, is mixed with the hydrogen generated in the reaction kettle 1 into a mixed gas, and then enters the exhaust pipeline 15 through the exhaust part to be exhausted.
Preferably, the discharge ports of the first feeding pipeline 6 and the second feeding pipeline 10 are both located below the exhaust part, so that the influence of air flow on feeding is avoided.
Preferably, a hydrogen concentration detector 28 is disposed in the exhaust pipeline 15, and the hydrogen concentration detector 28 is electrically connected to the control circuit and is used for detecting the concentration of hydrogen in the discharged mixed gas. Through the real-time concentration that detects hydrogen, help judging whether safe of the mist of emission, help grasping the degree that the reaction goes on simultaneously, decide whether need throw material and ejection of compact.
Preferably, a PH detection element (not shown) is further disposed in the reaction kettle 1, and the PH detection element is electrically connected to the control circuit and is used for detecting a real-time PH value of the solid-liquid mixture. Through the real-time PH value that detects solid-liquid mixture, and then grasp the degree that the reaction goes on to judge whether need throw the material and the ejection of compact, help calculating the change of hydrogen formation volume simultaneously. May operate in conjunction with the hydrogen concentration detector 28.
Preferably, a jacket 29 is further fixedly arranged on the outer side of the reaction kettle 1, and a cavity is formed in the jacket 29 and used for circulating a high-temperature medium to heat the reaction kettle 1. The high-temperature medium can be hot water, hot gas and the like, and the temperature in the reaction kettle 1 is kept at the optimal reaction temperature by heating the reaction kettle 1, so that the reaction efficiency is improved.
Wherein the hydrogen content in the mixed gas is less than 4%, preferably 2% or less. Because the metal powder and the liquid medicine are quantitatively added, the generation amount of the hydrogen is controllable, and the aim of adjusting the proportion of the hydrogen in the exhaust gas is achieved by adjusting the amount of the air entering. Such as adjusting the amount of air injected by the air source per unit time.
The control circuit and the first, second and third valves are arranged, so that the automatic operation degree of the device is improved, the reaction work sustainability of the device is higher, and the reliability can be guaranteed. Because the participation of operators is reduced, the personnel cost is reduced, and the personal safety is ensured.
Compared with the prior art, the utility model solves the problem of difficult treatment of the metal powder and eliminates the danger source through the innovative design of the metal powder explosion-proof treatment device; on the other hand, hydrogen generated by reaction in the treatment process is mixed with air through a specially designed air introducing structure, so that the concentration of the hydrogen is reliably controlled within a safety standard range, and finally high-altitude harmless safe discharge is carried out; the liquid generated by the reaction has no explosion danger and can be recycled as a byproduct of powder treatment; the solid produced by the reaction has no explosion danger and can be treated according to the conventional solid waste.
To sum up, the utility model discloses it is ingenious to have structural design, and powder treatment is effectual, and the processing procedure security is high and practical progress nature such as degree of automation height.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a metal powder explosion-proof processing apparatus which characterized in that:
comprises a reaction kettle, the upper part of the reaction kettle is closed, and a first feeding port and a second feeding port are arranged on the reaction kettle; the first feeding port is used for feeding quantitative metal powder, and the second feeding port is used for feeding quantitative liquid medicine;
the stirring device comprises a stirring shaft and a driving mechanism for driving the stirring shaft to rotate; the stirring shaft vertically extends into the reaction kettle and is positioned at the center of the cross section of the reaction kettle; the stirring shaft is connected with a plurality of stirring blades and is used for stirring the mixture of the metal powder and the liquid medicine in the reaction kettle to promote the reaction;
the upper section of the inner wall of the reaction kettle is provided with an exhaust part along the circumferential direction, the exhaust part is communicated with an exhaust pipeline, the exhaust pipeline performs air extraction through an air extraction pump, and the extracted air is discharged to the atmosphere through an exhaust end of the exhaust pipeline;
the bottom of the reaction kettle is provided with a discharge hole for discharging a solid-liquid mixture generated by the reaction; the discharge port is communicated with a centrifuge, solid-liquid separation is carried out through the centrifuge, and a liquid outlet and a solid outlet are arranged for respectively discharging solid and liquid;
wherein, a draft hood cylinder is also arranged in the reaction kettle, the upper end of the draft hood cylinder is sealed by a cover plate, the lower end of the draft hood cylinder has a height difference with the mixture in the reaction kettle, and the side wall of the draft hood cylinder and the inner wall of the reaction kettle are arranged at intervals; the cover plate is provided with a plurality of gas injection ports, and each gas injection port supplies gas through a gas source, so that a downward gas flow is formed in the flow guide cover cylinder.
2. The apparatus of claim 1, wherein: the first feeding port is used for quantitatively feeding materials through a vibration feeding sieve, and the discharged materials of the vibration feeding sieve are introduced into the reaction kettle through a first feeding pipeline.
3. The apparatus of claim 2, wherein: a weighing disc is arranged corresponding to the vibration feeding sieve, a quality sensing device is arranged at the bottom of the weighing disc and is electrically connected with a control circuit; the first feeding pipeline is controlled to be on and off through a first valve, and the first valve is electrically connected with the control circuit.
4. The apparatus of claim 3, wherein: and the second feeding port carries out quantitative feeding through a liquid medicine barrel, and the feeding of the liquid medicine barrel is introduced into the reaction kettle through a second feeding pipeline.
5. The apparatus of claim 4, wherein: the second feeding pipeline is controlled to be switched on and off through a second valve, and the second valve is electrically connected with the control circuit.
6. The apparatus of claim 3, wherein: the discharge port is communicated with the centrifuge through a discharge pipeline, the discharge pipeline is controlled to be switched on and off through a third valve, and the third valve is electrically connected with the control circuit.
7. The apparatus of claim 1, wherein: the exhaust part is a plurality of exhaust holes, the exhaust holes are uniformly distributed along the circumferential direction of the upper section of the inner wall of the reaction kettle, and the exhaust holes are communicated with the exhaust pipeline.
8. The apparatus of claim 1, wherein: the exhaust part is an exhaust groove which is arranged along the circumferential direction of the upper section of the inner wall of the reaction kettle and is communicated with the exhaust pipeline.
9. The apparatus of claim 1, wherein: the exhaust pipeline is provided with a hydrogen concentration detector which is electrically connected with a control circuit and used for detecting the concentration of hydrogen in the exhausted mixed gas.
10. The apparatus of claim 1, wherein: still be equipped with the PH detecting element in the reation kettle, this PH detecting element and a control circuit electric connection for detect the real-time pH value of solid-liquid mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920988951.2U CN211613773U (en) | 2019-06-27 | 2019-06-27 | Explosion-proof processing apparatus of metal powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920988951.2U CN211613773U (en) | 2019-06-27 | 2019-06-27 | Explosion-proof processing apparatus of metal powder |
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| CN211613773U true CN211613773U (en) | 2020-10-02 |
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| CN201920988951.2U Active CN211613773U (en) | 2019-06-27 | 2019-06-27 | Explosion-proof processing apparatus of metal powder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180871A (en) * | 2019-06-27 | 2019-08-30 | 苏州市东方环境技术研究有限公司 | A kind of metal powder technological processing for explosion protection feature device |
| CN110180871B (en) * | 2019-06-27 | 2024-06-04 | 苏州市东方环境技术研究有限公司 | Explosion-proof processing apparatus of metal powder |
-
2019
- 2019-06-27 CN CN201920988951.2U patent/CN211613773U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180871A (en) * | 2019-06-27 | 2019-08-30 | 苏州市东方环境技术研究有限公司 | A kind of metal powder technological processing for explosion protection feature device |
| CN110180871B (en) * | 2019-06-27 | 2024-06-04 | 苏州市东方环境技术研究有限公司 | Explosion-proof processing apparatus of metal powder |
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