CN111136826A - Particle cooling device - Google Patents

Particle cooling device Download PDF

Info

Publication number
CN111136826A
CN111136826A CN202010042248.XA CN202010042248A CN111136826A CN 111136826 A CN111136826 A CN 111136826A CN 202010042248 A CN202010042248 A CN 202010042248A CN 111136826 A CN111136826 A CN 111136826A
Authority
CN
China
Prior art keywords
temporary storage
storage bin
cooling
cooling apparatus
feeding
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.)
Pending
Application number
CN202010042248.XA
Other languages
Chinese (zh)
Inventor
余子毅
唐进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ongoal Material Automation Equipment Co ltd
Original Assignee
Ongoal Material Automation Equipment Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ongoal Material Automation Equipment Co ltd filed Critical Ongoal Material Automation Equipment Co ltd
Priority to CN202010042248.XA priority Critical patent/CN111136826A/en
Publication of CN111136826A publication Critical patent/CN111136826A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/16Auxiliary treatment of granules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00Conditioning or physical treatment of the material to be shaped
    • B29B13/04Conditioning or physical treatment of the material to be shaped by cooling
    • B29B13/045Conditioning or physical treatment of the material to be shaped by cooling of powders or pellets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D1/00Devices using naturally cold air or cold water

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

The invention discloses a particle cooling device which comprises a rack, wherein a feeding temporary storage bin, a cooling temporary storage bin, a blowing fan, an opening degree adjusting valve and a blowing material tube are arranged on the rack, the input end of the blowing material tube is connected with the air outlet of the blowing fan, the output end of the blowing material tube is connected with the feed inlet of the cooling temporary storage bin, the top of the cooling temporary storage bin is provided with an air outlet, a filter screen is fixedly arranged at the air outlet, the bottom of the feeding temporary storage bin is provided with a feed opening, the feed opening is connected with the blowing material tube, the bottom of the cooling temporary storage bin is provided with an internal circulation discharge opening and a pumping material discharge opening, the feeding temporary storage bin is provided with an external input feed opening and an internal circulation feed opening, the opening degree adjusting valve is connected between the internal circulation feed. The utility model provides a granule cooling device can cool off solid material repeatedly, and its cooling effect preferred, it is compared in water-cooling equipment, and cost and energy consumption are lower.

Description

Particle cooling device
Technical Field
The invention relates to a cooling device, in particular to a particle cooling device.
Background
In the chemical industry, materials extruded by an extruder are basically cooled by a water tank and then cut into particles. However, due to the length and space of part of plants, the cooling water tank is not long enough, so that the extruded materials cannot be cooled to a temperature below the required temperature, and the normal operation of subsequent equipment (after the granulating process) is affected.
In order to make the material temperature after cutting meet the requirement of the subsequent process on the material temperature, the prior art usually adopts the mode of reducing the temperature of cooling water, and the cooling water temperature reduction needs to increase water cooling equipment, thereby greatly improving the cost and energy consumption.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a particle cooling device which can cool materials and has low cost and energy consumption.
The purpose of the invention is realized by adopting the following technical scheme:
the utility model provides a granule cooling device, includes the frame, the frame is equipped with feeding temporary storage storehouse, cooling temporary storage storehouse, blows fan, aperture governing valve and blows the material pipe, blow the material pipe the input with the air outlet of blowing the fan is connected, blow the output of material pipe with the feed inlet in cooling temporary storage storehouse is connected, the top in cooling temporary storage storehouse is equipped with the gas outlet, gas outlet department is equipped with the filter screen fixedly, the bottom in feeding temporary storage storehouse is equipped with the feed opening, the feed opening with blow union coupling, the bottom in cooling temporary storage storehouse is equipped with inner loop discharge gate and pump drainage discharge gate, feeding temporary storage storehouse is equipped with outer input feed inlet and inner loop feed inlet, the inner loop discharge gate with be connected with the aperture governing valve between the inner loop feed inlet, the pump drainage discharge gate is used for connecting negative pressure conveying equipment.
Specifically, the gas outlet is fixedly provided with a cover body, and the cover body is provided with an exhaust pipe.
Specifically, the cooling temporary storage bin comprises a column part and a funnel-shaped part, the funnel-shaped part is arranged at the bottom of the column part, the funnel-shaped part is communicated with the inside of the column part, and the air outlet is located at the top of the column part.
Specifically, the inside of column portion is equipped with material level upper limit sensor, the inside of leaking hopper-shaped portion is equipped with material level lower limit sensor.
Specifically, the feeding temporary storage bin is funnel-shaped, and the feeding temporary storage bin is gradually narrowed from top to bottom.
Specifically, the blowing fan is provided with an exhaust pipe, and an air inlet of the exhaust pipe is provided with an air inlet filtering filter cylinder.
Specifically, a temperature sensor is arranged in the cooling temporary storage bin.
Specifically, the frame is equipped with two at least pipe fixed parts, every the pipe fixed part all with blow the material union coupling.
Specifically, the frame is for being vertical cuboid support body, the frame includes top layer framework and bottom framework, the storehouse rigid coupling is kept in the cooling in the top layer framework, the storehouse rigid coupling is kept in the feeding in the bottom framework.
Specifically, four corners of the bottom layer frame body are provided with rollers.
Compared with the prior art, the invention has the beneficial effects that:
the solid material is input to feeding temporary storage bin through the outer input feed inlet, blows the fan and blows the intraductal blowing to the solid material that will be in feeding temporary storage bin bottom feed opening drives to getting into the cooling temporary storage bin along blowing the material pipe. Then the solid material falls under the action of gravity, and the heat of the solid material is discharged along with the air flow through an air outlet arranged at the top of the cooling temporary storage bin, so that the solid material is cooled and cooled. The air outlet is fixedly provided with a filter screen which is used for separating solid materials and preventing the solid materials from being taken away by the air flow through the air outlet. If the temperature of the solid material in the cooling temporary storage bin meets the cooling requirement, starting the negative pressure of a pipeline connected with the material pumping discharge port, pumping the solid material meeting the cooling requirement out of the material pumping discharge port by using the negative pressure, and conveying the solid material to the next process link; if the temperature of the solid material in the cooling temporary storage bin does not meet the cooling requirement, the negative pressure of the pipeline connected with the material pumping discharge port is not started temporarily, so that the solid material which does not meet the cooling requirement falls into the feeding temporary storage bin again through the opening regulating valve (the internal circulation feed port) under the action of gravity, and then enters the cooling temporary storage bin along the blowing material pipe again according to the mode, namely, the heat is taken away by the air flow again, and the secondary cooling is realized. The utility model provides a granule cooling device can cool off solid material repeatedly, and its cooling effect preferred, it is compared in water-cooling equipment, and cost and energy consumption are lower.
Drawings
FIG. 1 is a front view of a pellet cooling apparatus;
fig. 2 is a left side view of the particle cooling device, in which the blowing pipe and the like are not shown;
FIG. 3 is a partial top view of a portion of FIG. 1 above the line B-B;
fig. 4 is a view corresponding to section a-a in fig. 1.
In the figure: 1. a feeding temporary storage bin; 11. an external input feed port; 12. an inner circulation feed inlet; 2. cooling the temporary storage bin; 21. an internal circulation discharge hole; 22. a material pumping and discharging port; 23. an air outlet; 24. a filter screen; 25. a cover body; 26. an exhaust pipe; 27. a columnar portion; 28. a funnel-shaped portion; 291. a material level upper limit sensor; 292. a material level lower limit sensor; 3. blowing a fan; 31. an inlet filter cartridge; 4. an opening degree regulating valve; 5. blowing a material pipe; 61. a tube fixing portion; 62. a top layer frame body; 63. a bottom layer frame body.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1 to 4, a particle cooling device comprises a frame provided with a feeding temporary storage bin 1, a cooling temporary storage bin 2, a blowing fan 3, an opening regulating valve 4 and a blowing pipe 5. The input end of the blowing pipe 5 is connected with the air outlet of the blowing fan 3 (the blowing pipe 5 in fig. 2 is partially shielded and is shown by a dotted line), and the output end of the blowing pipe 5 is connected with the feed inlet (at D in fig. 1 and 2) of the cooling temporary storage bin 2. An air outlet 23 (see fig. 3) is arranged at the top of the cooling temporary storage bin 2, and a filter screen 24 is fixedly arranged at the air outlet 23. The bottom of the feeding temporary storage bin 1 is provided with a feed opening (C in figures 1 and 2), and the feed opening is connected with a blowing pipe 5. The bottom end of the cooling temporary storage bin 2 is provided with an internal circulation discharge port 21 and a material pumping discharge port 22 (see figure 2). The feeding temporary storage bin 1 is provided with an external input feed inlet 11 and an internal circulation feed inlet 12 (see figure 4), and an opening degree regulating valve 4 is connected between the internal circulation feed inlet 12 and the internal circulation discharge outlet 21. The material pumping and discharging port 22 is used for connecting negative pressure conveying equipment.
Specifically, a cover 25 (see fig. 2) is fixedly disposed at the air outlet 23, and the cover 25 is provided with an exhaust pipe 26.
Specifically, the cooling temporary storage 2 includes a columnar portion 27 and a funnel portion 28. Funnel portion 28 is provided at the bottom of columnar portion 27, and funnel portion 28 communicates with the inside of columnar portion 27. The air outlet 23 is located at the top of the column portion 27.
Specifically, the inside of the columnar portion 27 is provided with an upper level limit sensor 291 (see fig. 2), and the inside of the funnel portion 28 is provided with a lower level limit sensor 292.
Specifically, the feeding temporary storage bin 1 is funnel-shaped, and the feeding temporary storage bin 1 is gradually narrowed from top to bottom.
Specifically, the blower fan 3 is provided with an air suction pipe, an air inlet of which is provided with an intake air filter cartridge 31 (see fig. 2).
Specifically, a temperature sensor (not shown) is provided in the cooling temporary storage 2.
Specifically, the frame is provided with at least two tube fixing portions 61 (see fig. 1), each tube fixing portion 61 being connected with the blowing duct 5.
Specifically, the frame is for being vertical cuboid support body, and the frame includes top layer framework 62 and bottom framework 63, and cooling temporary storage storehouse 2 rigid coupling is in top layer framework 62, and feeding temporary storage storehouse 1 rigid coupling is in bottom framework 63. Cuboid support body can be dismantled, makes this application granule cooling device convenient to detach, remove.
Specifically, the four corners of the bottom frame 63 are provided with rollers.
The working principle of the particle cooling device is as follows:
the solid material is input into the feeding temporary storage bin 1 through the external input feed inlet 11, and the blowing fan 3 blows air into the blowing pipe 5 (the air flow direction refers to the direction E in fig. 1), so that the solid material in the feed opening at the bottom of the feeding temporary storage bin 1 is driven to enter the columnar part 27 of the cooling temporary storage bin 2 along the blowing pipe 5. Then, the solid material falls down on the funnel-shaped part 28 under the action of gravity, and the heat of the solid material is discharged along with the airflow through the air outlet 23 arranged at the top of the cooling temporary storage bin 2, so that the solid material is cooled and dissipated. The air outlet 23 is fixedly provided with a filter screen 24, and the filter screen 24 is used for separating solid materials and preventing the solid materials from being taken away by the air flow through the air outlet 23. If the temperature of the solid material in the cooling temporary storage bin 2 meets the cooling requirement, starting negative pressure of a pipeline (not shown in the figure) connected with the pumping material discharge port 22, pumping the solid material meeting the cooling requirement out of the pumping material discharge port 22 by using the negative pressure, and conveying the solid material to the next process link; if the temperature of the solid material in the cooling temporary storage bin 2 does not meet the cooling requirement, the negative pressure of the pipeline (not shown in the figure) connected with the material pumping discharge port 22 is not started for the time being, so that the solid material which does not meet the cooling requirement falls into the feeding temporary storage bin 1 again through the opening regulating valve 4 (the internal circulation feed port 12) under the action of gravity, and then enters the cooling temporary storage bin 2 along the material blowing pipe 5 again according to the above mode, namely, the heat is taken away by the air flow again, and the secondary cooling is realized. Because the granule cooling device of this application can cool off solid material repeatedly, it compares in water-cooling equipment, and cost and energy consumption are lower.
The column part 27 is provided with a material level upper limit sensor 291 (see fig. 2), the funnel-shaped part 28 is provided with a material level lower limit sensor 292, and the material level upper limit sensor 291 and the material level lower limit sensor 292 can timely feed back the material level condition of the solid material in the cooling temporary storage bin 2 in the process of repeatedly cooling the solid material. If the material level is higher than the position of the upper limit sensor 291 of the material level, the particle cooling device gives a warning, and at the moment, the opening of the opening regulating valve 4 can be increased, so that the flow rate of the material entering the feeding temporary storage bin 1 from the cooling temporary storage bin 2 is increased; if the material level is lower than the position of the material level lower limit sensor 292, the particle cooling device can warn, and at the moment, the opening degree of the opening degree regulating valve 4 can be reduced, so that the flow rate of the material entering the feeding temporary storage bin 1 from the cooling temporary storage bin 2 is reduced. In this manner, the material level in the cooling temporary storage silo 2 can be kept between the upper level limit sensor 291 and the lower level limit sensor 292.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. A pellet cooling apparatus, characterized by: the automatic material-discharging device comprises a frame, the frame is equipped with feeding temporary storage bin, cooling temporary storage bin, blows fan, aperture governing valve and blows the material pipe, blow the input of material pipe with the air outlet of blowing the fan is connected, blow the output of material pipe with the feed inlet in cooling temporary storage bin is connected, the top in cooling temporary storage bin is equipped with the gas outlet, gas outlet department is equipped with the filter screen fixedly, the bottom in feeding temporary storage bin is equipped with the feed opening, the feed opening with blow the union coupling of material pipe, the bottom in cooling temporary storage bin is equipped with inner loop discharge gate and extraction discharge gate, feeding temporary storage bin is equipped with outer input feed inlet and inner loop feed inlet, the inner loop discharge gate with be connected with the aperture governing valve between the inner loop feed inlet, the extraction discharge gate is used for connecting negative pressure conveying equipment.
2. The particle cooling apparatus of claim 1, wherein: the air outlet is fixedly provided with a cover body, and the cover body is provided with an exhaust pipe.
3. The particle cooling apparatus of claim 2, wherein: the cooling temporary storage bin comprises a column part and a funnel-shaped part, the funnel-shaped part is arranged at the bottom of the column part, the funnel-shaped part is communicated with the inside of the column part, and the gas outlet is located at the top of the column part.
4. A particle cooling apparatus as claimed in claim 3, wherein: the inside of column portion is equipped with material level upper limit sensor, the inside of leaking hopper-shaped portion is equipped with material level lower limit sensor.
5. The particle cooling apparatus of claim 1, wherein: the feeding temporary storage bin is funnel-shaped and gradually narrows from top to bottom.
6. The particle cooling apparatus of claim 1, wherein: the blowing fan is provided with an exhaust pipe, and an air inlet of the exhaust pipe is provided with an air inlet filtering filter cylinder.
7. The particle cooling apparatus of claim 1, wherein: and a temperature sensor is arranged in the cooling temporary storage bin.
8. The particle cooling apparatus of claim 1, wherein: the frame is equipped with two at least pipe fixed parts, every the pipe fixed part all with blow the material union coupling.
9. The particle cooling apparatus of claim 1, wherein: the frame is for being vertical cuboid support body, the frame includes top layer framework and bottom framework, cooling temporary storage storehouse rigid coupling in the top layer framework, feeding temporary storage storehouse rigid coupling in the bottom framework.
10. The particle cooling apparatus of claim 9, wherein: four corners of the bottom layer frame body are provided with rollers.
CN202010042248.XA 2020-01-15 2020-01-15 Particle cooling device Pending CN111136826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010042248.XA CN111136826A (en) 2020-01-15 2020-01-15 Particle cooling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010042248.XA CN111136826A (en) 2020-01-15 2020-01-15 Particle cooling device

Publications (1)

Publication Number Publication Date
CN111136826A true CN111136826A (en) 2020-05-12

Family

ID=70525209

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010042248.XA Pending CN111136826A (en) 2020-01-15 2020-01-15 Particle cooling device

Country Status (1)

Country Link
CN (1) CN111136826A (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450895A (en) * 1980-11-05 1984-05-29 Tunzini-Nessi Enterprises D'equipements Process and apparatus for heating or cooling light solid particles
JP2005069506A (en) * 2003-08-28 2005-03-17 Kurimoto Ltd Heat exchanger unit
CN102898220A (en) * 2012-11-13 2013-01-30 广州市凯米瑞化肥有限公司 Plate type water cooling device applicable to particle fertilizer
CN205932461U (en) * 2016-05-18 2017-02-08 大同新成新材料股份有限公司 Granule cooling collection device
CN206131788U (en) * 2016-10-19 2017-04-26 天津鸿峥新能源科技发展有限公司 Living beings granule cooler
CN206170406U (en) * 2016-11-15 2017-05-17 上海稀美师塑料着色科技有限公司 Plastic granules compounding cooler
CN108117075A (en) * 2017-11-23 2018-06-05 中冶长天国际工程有限责任公司 A kind of activated carbon is prepared with vertical cooling device and its cooling means
CN108571845A (en) * 2017-03-10 2018-09-25 深圳市芭田生态工程股份有限公司 Fertilizer cooling means and system
CN208197278U (en) * 2018-05-09 2018-12-07 宁光线缆有限公司 A kind of CABLE MATERIALS cooling device
CN109163581A (en) * 2018-06-30 2019-01-08 湖州全优电工材料有限公司 A kind of circulating mill base is fully cooled device
CN209802138U (en) * 2019-03-28 2019-12-17 临沧宏泰饲料有限责任公司 Closed fodder is against wind cooling tower
CN212193776U (en) * 2020-01-15 2020-12-22 宏工科技股份有限公司 Particle cooling device

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450895A (en) * 1980-11-05 1984-05-29 Tunzini-Nessi Enterprises D'equipements Process and apparatus for heating or cooling light solid particles
JP2005069506A (en) * 2003-08-28 2005-03-17 Kurimoto Ltd Heat exchanger unit
CN102898220A (en) * 2012-11-13 2013-01-30 广州市凯米瑞化肥有限公司 Plate type water cooling device applicable to particle fertilizer
CN205932461U (en) * 2016-05-18 2017-02-08 大同新成新材料股份有限公司 Granule cooling collection device
CN206131788U (en) * 2016-10-19 2017-04-26 天津鸿峥新能源科技发展有限公司 Living beings granule cooler
CN206170406U (en) * 2016-11-15 2017-05-17 上海稀美师塑料着色科技有限公司 Plastic granules compounding cooler
CN108571845A (en) * 2017-03-10 2018-09-25 深圳市芭田生态工程股份有限公司 Fertilizer cooling means and system
CN108117075A (en) * 2017-11-23 2018-06-05 中冶长天国际工程有限责任公司 A kind of activated carbon is prepared with vertical cooling device and its cooling means
CN208197278U (en) * 2018-05-09 2018-12-07 宁光线缆有限公司 A kind of CABLE MATERIALS cooling device
CN109163581A (en) * 2018-06-30 2019-01-08 湖州全优电工材料有限公司 A kind of circulating mill base is fully cooled device
CN209802138U (en) * 2019-03-28 2019-12-17 临沧宏泰饲料有限责任公司 Closed fodder is against wind cooling tower
CN212193776U (en) * 2020-01-15 2020-12-22 宏工科技股份有限公司 Particle cooling device

Similar Documents

Publication Publication Date Title
CN212193776U (en) Particle cooling device
CN2883276Y (en) Dust collector for discharging of storage hopper feeder
CN111136826A (en) Particle cooling device
CN104858139B (en) Mulch film impurity separator
CN210708896U (en) Biomass particle cooling bin
CN109455526A (en) The air-cooled conveying device of rubber compound pellet
CN211255847U (en) Novel environment-friendly clean type coal semi-finished product cooling tower
CN210192846U (en) A raw materials conveyor for sweet potato vermicelli production
CN207158341U (en) A kind of intelligent particle conveyer
CN207981398U (en) Grinding device
CN215320023U (en) Wind-cutting water-cooling conveying and collecting device
CN206147494U (en) Heat dissipation framework of server
CN206152764U (en) Energy -efficient environmental protection granulator
CN217005022U (en) A air cooling device for feed production processing usefulness
CN217520218U (en) Storage chamber is used in slagging-off agent production
CN209177585U (en) The air-cooled conveying device of rubber compound pellet
CN214725513U (en) Manufacturing equipment of composite granules
CN212472047U (en) Granule rushing and conveying cooling barrel
CN211255846U (en) Novel environment-friendly clean coal cooling tower without storehouse filling loss
CN221930751U (en) Grain storage bin heat radiation structure
CN213923261U (en) Double-layer hopper in air suction and dust removal system of grain unloading pit
CN212797416U (en) Microparticle material recovery unit of granulation machine
CN217476358U (en) Aggregate dust collector
CN214056032U (en) Material grain dust removal mechanism
CN211768920U (en) Quantitative positive pressure pneumatic ash handling system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination