CN114251311A - Air pump assembly for anhydrous sodium sulphate dry powder automatic conveying system and control method - Google Patents
Air pump assembly for anhydrous sodium sulphate dry powder automatic conveying system and control method Download PDFInfo
- Publication number
- CN114251311A CN114251311A CN202010992314.XA CN202010992314A CN114251311A CN 114251311 A CN114251311 A CN 114251311A CN 202010992314 A CN202010992314 A CN 202010992314A CN 114251311 A CN114251311 A CN 114251311A
- Authority
- CN
- China
- Prior art keywords
- air pump
- anhydrous sodium
- valve
- sodium sulphate
- pump assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title claims abstract description 114
- 229910052938 sodium sulfate Inorganic materials 0.000 title claims abstract description 55
- 235000011152 sodium sulphate Nutrition 0.000 title claims abstract description 55
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005243 fluidization Methods 0.000 claims abstract description 43
- 238000009826 distribution Methods 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 7
- 238000002425 crystallisation Methods 0.000 abstract description 4
- 230000008025 crystallization Effects 0.000 abstract description 4
- 238000004043 dyeing Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
Abstract
The invention discloses an air pump assembly for an automatic anhydrous sodium sulphate dry powder conveying system and a control method thereof. Through the structure, the anhydrous sodium sulphate conveying process is rapid, the time existing in the air pump body and the fluidization tank is short, and no anhydrous sodium sulphate is accumulated and remained in the cavities of the air pump body and the fluidization tank, so that the crystallization is not easy to generate to block a pipeline or a discharge port.
Description
Technical Field
The invention relates to the field of dyeing and finishing equipment, in particular to an air pump assembly for an anhydrous sodium sulphate dry powder automatic conveying system and a control method.
Background
In the current dyeing and finishing production, the anhydrous sodium sulphate plays an extremely important role in the dyeing process, and the quality of the application effect directly influences the quality of the dyed cloth product. In the traditional dyeing process, the anhydrous sodium sulphate conveying is mainly divided into two steps, the weight of the anhydrous sodium sulphate is firstly weighed, then the weighed anhydrous sodium sulphate is conveyed to a dye vat, and then the following three conveying modes appear: the first method is a method of manual weighing and transportation, the second method is a method of conveying after being weighed into an aqueous solution, and the third method is a method of conveying in a powder form directly after being weighed. The first conveying method needs a large amount of labor, and anhydrous sodium sulphate is a toxic substance and can cause adverse effects on human bodies; the dyeing bath ratio of the second conveying method is difficult to control, and the dyeing success rate is easily influenced; the third conveying method is characterized in that the anhydrous sodium sulphate is wetted and is easy to crystallize, the phenomena of filter element blockage and pipeline blockage are easy to cause after long-time conveying, and the filter element and the pipeline need to be detached regularly to be thoroughly cleaned. Wherein, powder is carried because the defect is handled easily relatively, has gradually replaced two kinds of other modes of transportation, but its easy problem that produces the crystallization jam still reduces the production efficiency of producing the line to a certain extent, and the problem is waited to solve urgently.
Disclosure of Invention
Aiming at the problems, the invention provides an air pump assembly for an anhydrous sodium sulphate dry powder automatic conveying system and a control method based on a anhydrous sodium sulphate dry powder conveying mode, and mainly solves the problem that the anhydrous sodium sulphate dry powder is easy to block in the process of conveying the anhydrous sodium sulphate dry powder by using an air pump.
In order to solve the technical problems, the invention discloses an air pump assembly for an automatic anhydrous sodium sulphate dry powder conveying system on one hand, which comprises a vertically arranged air pump body, wherein a feeding port of the air pump body is provided with a feeding valve, the feeding valve is used for being connected with a weighing hopper, the outer wall of the air pump body is provided with a first feeding valve, a discharging port of the air pump body is provided with a fluidization tank, one end of the fluidization tank is provided with a Venturi tube, the other end of the fluidization tank is provided with an extension tube, one end of the extension tube, which is close to the Venturi tube, is provided with a nozzle, the nozzle corresponds to the suction chamber of the Venturi tube in position, the diffusion tube end of the Venturi tube is used for being connected with an air-powder separating mechanism, the other end of the extension tube is connected with a second feeding valve, the bottom of the fluidization tank is provided with an air distribution plate, the air distribution plate is provided with a plurality of small holes, and a cavity is arranged between the air distribution plate and the bottom of the fluidization tank, the bottom of the fluidization tank is provided with a fluidization valve, and the first feed valve, the second feed valve and the fluidization valve are all connected with an air compressor through pipelines.
In some embodiments, further comprising a flexible connector for connecting the feed valve and the weigh hopper.
In some embodiments, the flexible connector is a cloth bag.
In some embodiments, the feed valve is a pneumatic butterfly valve.
In some embodiments, the feed valve is a pneumatic ball valve.
In some embodiments, the fluidization valve is a pneumatic ball valve.
In some embodiments, the nozzle is a conical nozzle, the outer wall of the conical nozzle is at a linear distance of 6mm from the inner wall of the suction chamber of the venturi, and the throat of the venturi is 22 mm.
In some embodiments, the air pump body is funnel-shaped.
The invention also provides a control method of the air pump assembly, which is used for controlling the air pump assembly for the anhydrous sodium sulphate dry powder automatic conveying system and comprises the following steps:
step one, opening a feed valve, feeding anhydrous sodium sulphate in a weighing hopper into an air pump body, and closing the feed valve;
secondly, opening a fluidizing valve, introducing compressed air into a fluidizing tank, and fluidizing anhydrous sodium sulphate and the compressed air under the action of airflow;
thirdly, opening the first feeding valve and the second feeding valve, and blowing the anhydrous sodium sulphate along the direction of the air pump body, the fluidization tank and the venturi tube along with the airflow under the action of the compressed air;
and fourthly, closing the fluidizing valve, the first feeding valve and the second feeding valve, and finishing the conveying of the anhydrous sodium sulphate dry powder.
The invention has the beneficial effects that: by arranging the air pump body, the fluidization tank and the venturi tube-nozzle combined structure, anhydrous sodium sulphate in the air pump body is conveyed towards the fluidization tank under the positive pressure of the first feed valve, when the fluidization valve is opened, the gas distribution plate at the bottom of the fluidization tank generates ascending gas flow to blow off anhydrous sodium sulphate accumulated at the bottom of the fluidization tank 4, the anhydrous sodium sulphate is in a relatively suspended state, the extension pipe connected with the second feeding valve conveys compressed air to the nozzle, thereby leading the venturi tube-nozzle combination structure to generate negative pressure, leading the anhydrous sodium sulphate to be blown out of the fluidization tank finally, leading the anhydrous sodium sulphate conveying process to be rapid through the structure, the time that exists in air pump body, fluidization jar is short, because no anhydrous sodium sulphate is piled up in the cavity of air pump body, fluidization jar and is remained, difficult production crystallization blocks up pipeline or discharge gate, need not often to dismantle the machine and maintains, has improved dyeing and finishing industry's production efficiency.
Drawings
FIG. 1 is a perspective view of an air pump assembly for an automatic dry powder delivery system according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of fig. 1 taken along line a.
Wherein: 1-an air pump body, 2-a feed valve, 3-a first feed valve, 4-a fluidization tank, 5-a venturi tube, 6-an extension pipe, 7-a nozzle, 8-a second feed valve, 9-an air distribution plate, 10-a cavity and 11-a fluidization valve.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1 and 2, the embodiment discloses an air pump assembly for an automatic anhydrous sodium sulphate dry powder conveying system, which comprises a vertically placed air pump body 1, a feed inlet of the air pump body 1 is provided with a feed valve 2, the feed valve 2 is used for connecting a weighing hopper, the outer wall of the air pump body 1 is provided with a first feed valve 3, a discharge outlet of the air pump body 1 is provided with a fluidization tank 4, one end of the fluidization tank 4 is provided with a venturi tube 5, the other end of the fluidization tank 4 is provided with an extension tube 6, one end of the extension tube 6 close to the venturi tube 5 is provided with a nozzle 7, the nozzle 7 corresponds to the suction chamber of the venturi tube 5, the diffusion tube end of the venturi tube 5 is used for connecting a gas-powder separating mechanism, the other end of the extension tube 6 is connected with a second feed valve 8, the bottom of the fluidization tank 4 is provided with a gas distribution plate 9, the gas distribution plate 9 is provided with a plurality of small holes, a cavity 10 is arranged between the gas distribution plate 9 and the bottom of the fluidization tank 4, the bottom of fluidization jar 4 is equipped with fluidization valve 11, and first feed valve 3, second feed valve 8 and fluidization valve 11 all are connected with air compressor through the pipeline, and air compressor provides dry noise, the pressure more than 4 kilograms, the stable air supply of pressure.
In another preferred embodiment of the present invention, the pipelines connected with the first feeding valve 3, the second feeding valve 8 and the fluidizing valve 11 are connected to the output pipe of the air compressor through a four-way valve, so that the output end of the air compressor is saved.
The invention is through setting up the air pump body 1, fluidizing tank 4, and Venturi tube 5-jet nozzle 7 composite structure, under the positive pressure of the first feed valve 3, the anhydrous sodium sulphate in the air pump body 1 will be transported to the fluidizing tank 4, when opening the fluidizing valve 11, the air distribution plate 9 at the bottom of the fluidizing tank 4 produces the rising air current, blow up the anhydrous sodium sulphate piled up at the bottom of the fluidizing tank 4, the anhydrous sodium sulphate is in relatively suspended state, the extension pipe 6 connected with the second feed valve 8 conveys the compressed air to the jet nozzle 7, thus make Venturi tube 5-jet nozzle 7 composite structure produce the negative pressure, the anhydrous sodium sulphate is blown out of the fluidizing tank 4 finally, through the above-mentioned structure, the transport process of the anhydrous sodium sulphate is rapid, the existing time in the air pump body 1, fluidizing tank 4 is short, because there is no anhydrous sodium sulphate to pile up and remain in the cavity of the air pump body 1, fluidizing tank 4, difficult to produce the crystallization and block the pipeline or discharge port, need not often to dismantle the machine and maintain, improved dyeing and finishing industry's production efficiency.
In addition, the cavity 10 provides a certain buffer space for compressed air, so that the situation that anhydrous sodium sulphate receives excessive pressure and is blown back to the air pump body 1 is avoided. Instead of the venturi 5 entering the cavity of the fluidization tank 4, the extension pipe 6 has to cross the cavity of the fluidization tank 4.
The feeding valve 2 in the scheme is used for being directly connected with the weighing hopper, and preferably further comprises a flexible connecting piece, and the flexible connecting piece is used for connecting the feeding valve with the weighing hopper, so that the descending process of the anhydrous sodium sulphate is relatively stable. The flexible connecting piece is a cloth bag.
As a preferred embodiment of the present invention, considering that the anhydrous sodium sulphate is delivered in dry powder form, it is more preferable that the above-mentioned feed valve is a pneumatic butterfly valve. The feeding valve is a pneumatic ball valve, and the fluidizing valve is a pneumatic ball valve.
As the most important point of the invention, referring to FIG. 2, the nozzle is a conical nozzle, the linear distance between the outer wall of the conical nozzle and the inner wall of the suction chamber of the Venturi tube is 6mm, and the throat of the Venturi tube is 22 mm. At this proportional size, the negative pressure generated is the greatest and the anhydrous sodium sulphate is best transported.
As a preferred embodiment of the present invention, the air pump body is funnel-shaped, and the function of the air pump body is to enable the anhydrous sodium sulphate to fall into the fluidization tank 4 by means of the gravity of the anhydrous sodium sulphate even under the positive pressure without the first feeding valve 3.
Example two
The embodiment discloses a control method of an air pump assembly, which is used for controlling the air pump assembly for an automatic anhydrous sodium sulphate dry powder conveying system and comprises the following steps:
firstly, opening a feed valve 2, feeding anhydrous sodium sulphate in a weighing hopper into an air pump body 1, and closing the feed valve 2;
secondly, opening a fluidizing valve 11, introducing compressed air into a fluidizing tank 4, and fluidizing anhydrous sodium sulphate and the compressed air under the action of air flow;
thirdly, opening the first feeding valve 3 and the second feeding valve 8, and blowing off anhydrous sodium sulphate along the directions of the air pump body 1, the fluidization tank 4 and the venturi tube 5 along with air flow under the action of compressed air;
and fourthly, closing the fluidizing valve 11, the first feeding valve 3 and the second feeding valve 8, and finishing the conveying of the anhydrous sodium sulphate dry powder.
It is clear that in normal operation of the air pump assembly, the fluidising valve 11, the first feed valve 3 and the second feed valve 8 are open/closed simultaneously.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. An air pump assembly for an automatic anhydrous sodium sulphate dry powder conveying system is characterized by comprising a vertically placed air pump body, wherein a feeding port of the air pump body is provided with a feeding valve, the feeding valve is used for connecting a weighing hopper, the outer wall of the air pump body is provided with a first feeding valve, a discharge port of the air pump body is provided with a fluidization tank, one end of the fluidization tank is provided with a Venturi tube, the other end of the fluidization tank is provided with an extension tube, one end of the extension tube, which is close to the Venturi tube, is provided with a nozzle, the nozzle corresponds to the suction chamber of the Venturi tube in position, the diffusion tube end of the Venturi tube is used for connecting a gas-powder separation mechanism, the other end of the extension tube is connected with a second feeding valve, the bottom of the fluidization tank is provided with a gas distribution plate, the gas distribution plate is provided with a plurality of small holes, and a cavity is arranged between the gas distribution plate and the bottom of the fluidization tank, the bottom of the fluidization tank is provided with a fluidization valve, and the first feed valve, the second feed valve and the fluidization valve are all connected with an air compressor through pipelines.
2. The air pump assembly for an automatic dry anhydrous sodium sulphate powder conveying system according to claim 1, further comprising a flexible connector for connecting the feeding valve and the weighing hopper.
3. The air pump assembly for an automatic anhydrous sodium sulphate dry powder conveying system according to claim 2, wherein the flexible connecting piece is a cloth bag.
4. The air pump assembly for an automatic dry anhydrous sodium sulfate powder conveying system according to claim 1, wherein the feeding valve is a pneumatic butterfly valve.
5. The air pump assembly for an automatic dry anhydrous sodium sulfate powder conveying system according to claim 1, wherein the feeding valve is a pneumatic ball valve.
6. The air pump assembly for an automatic dry anhydrous sodium sulfate powder conveying system as claimed in claim 1, wherein the fluidizing valve is a pneumatic ball valve.
7. The air pump assembly for the automatic dry powder delivery system of anhydrous sodium sulphate according to claim 1, wherein the nozzle is a conical nozzle, the straight line distance between the outer wall of the conical nozzle and the inner wall of the suction chamber of the venturi tube is 6mm, and the throat of the venturi tube is 22 mm.
8. The air pump assembly for an automatic dry anhydrous sodium sulfate powder conveying system according to claim 1, wherein the air pump body is funnel-shaped.
9. A control method of an air pump assembly, which is used for controlling the air pump assembly for the anhydrous sodium sulphate dry powder automatic conveying system according to any one of claims 1-8, and comprises the following steps:
step one, opening a feed valve, feeding anhydrous sodium sulphate in a weighing hopper into an air pump body, and closing the feed valve;
secondly, opening a fluidizing valve, introducing compressed air into a fluidizing tank, and fluidizing anhydrous sodium sulphate and the compressed air under the action of airflow;
thirdly, opening the first feeding valve and the second feeding valve, and blowing the anhydrous sodium sulphate along the direction of the air pump body, the fluidization tank and the venturi tube along with the airflow under the action of the compressed air;
and fourthly, closing the fluidizing valve, the first feeding valve and the second feeding valve, and finishing the conveying of the anhydrous sodium sulphate dry powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992314.XA CN114251311B (en) | 2020-09-21 | 2020-09-21 | Air pump assembly for anhydrous sodium sulfate dry powder automatic conveying system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992314.XA CN114251311B (en) | 2020-09-21 | 2020-09-21 | Air pump assembly for anhydrous sodium sulfate dry powder automatic conveying system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114251311A true CN114251311A (en) | 2022-03-29 |
| CN114251311B CN114251311B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010992314.XA Active CN114251311B (en) | 2020-09-21 | 2020-09-21 | Air pump assembly for anhydrous sodium sulfate dry powder automatic conveying system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114251311B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB879303A (en) * | 1959-07-13 | 1961-10-11 | A R B E D Acieries Reunies De | Putting finely divided material in suspension in a gaseous carrier |
| JPH06286872A (en) * | 1993-04-05 | 1994-10-11 | Nordson Kk | Powder/grain pneumatic transport method, transport temporary stop method and device therefor |
| US5857838A (en) * | 1997-04-09 | 1999-01-12 | Lockheed Martin Idaho Technologies Company | Water cooled steam jet |
| CN101142030A (en) * | 2005-03-18 | 2008-03-12 | 艾森曼设备制造有限及两合公司 | Device for guiding powdery fluidic media |
| CN101563167A (en) * | 2006-08-04 | 2009-10-21 | 艾森曼设备制造有限及两合公司 | Powder pump with vacuum filling |
| CH701956A1 (en) * | 2009-10-06 | 2011-04-15 | Frei Engineering Ag | Device for application of powder lacquer for coating e.g. three part canned body, has discharge line that sprays fluidization powder, and vacuum area directly connected with powder in container |
| CN103691215A (en) * | 2013-12-13 | 2014-04-02 | 郑州东方安彩耐火材料有限公司 | Heat preservation powder negative pressure recycling system in production of refractory material by using fusion casting method |
| CN203694630U (en) * | 2013-12-16 | 2014-07-09 | 宁波广博纳米新材料股份有限公司 | Atomization feeder |
-
2020
- 2020-09-21 CN CN202010992314.XA patent/CN114251311B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB879303A (en) * | 1959-07-13 | 1961-10-11 | A R B E D Acieries Reunies De | Putting finely divided material in suspension in a gaseous carrier |
| JPH06286872A (en) * | 1993-04-05 | 1994-10-11 | Nordson Kk | Powder/grain pneumatic transport method, transport temporary stop method and device therefor |
| US5857838A (en) * | 1997-04-09 | 1999-01-12 | Lockheed Martin Idaho Technologies Company | Water cooled steam jet |
| CN101142030A (en) * | 2005-03-18 | 2008-03-12 | 艾森曼设备制造有限及两合公司 | Device for guiding powdery fluidic media |
| CN101563167A (en) * | 2006-08-04 | 2009-10-21 | 艾森曼设备制造有限及两合公司 | Powder pump with vacuum filling |
| CH701956A1 (en) * | 2009-10-06 | 2011-04-15 | Frei Engineering Ag | Device for application of powder lacquer for coating e.g. three part canned body, has discharge line that sprays fluidization powder, and vacuum area directly connected with powder in container |
| CN103691215A (en) * | 2013-12-13 | 2014-04-02 | 郑州东方安彩耐火材料有限公司 | Heat preservation powder negative pressure recycling system in production of refractory material by using fusion casting method |
| CN203694630U (en) * | 2013-12-16 | 2014-07-09 | 宁波广博纳米新材料股份有限公司 | Atomization feeder |
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| CN114251311B (en) | 2024-03-22 |
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