CN113695054B - Granular potash fertilizer rounding and powder removing device - Google Patents
Granular potash fertilizer rounding and powder removing device Download PDFInfo
- Publication number
- CN113695054B CN113695054B CN202111126805.7A CN202111126805A CN113695054B CN 113695054 B CN113695054 B CN 113695054B CN 202111126805 A CN202111126805 A CN 202111126805A CN 113695054 B CN113695054 B CN 113695054B
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- Prior art keywords
- rounding
- potash fertilizer
- granule
- powder
- device body
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- 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.)
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- 239000000843 powder Substances 0.000 title claims abstract description 65
- 239000003337 fertilizer Substances 0.000 title claims abstract description 47
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 title claims abstract description 44
- 229940072033 potash Drugs 0.000 title claims abstract description 44
- 235000015320 potassium carbonate Nutrition 0.000 title claims abstract description 44
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 title claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 50
- 239000008187 granular material Substances 0.000 claims description 42
- 239000002245 particle Substances 0.000 claims description 35
- 239000000428 dust Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 13
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052700 potassium Inorganic materials 0.000 abstract description 11
- 239000011591 potassium Substances 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 3
- 238000009736 wetting Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 5
- 230000003179 granulation Effects 0.000 description 5
- 238000007873 sieving Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000004807 localization Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 235000020985 whole grains Nutrition 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000109 continuous material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a granular potash fertilizer rounding and powder removing device, and relates to the technical field of potash fertilizer rounding and powder removing. The device comprises a bucket elevator, wherein a raw material bin is connected to the bucket elevator, a quantitative feeding auger is connected to the lower end of the raw material bin, a forced feeding system is connected to the raw material bin through the quantitative feeding auger, a tabletting host is connected to the forced feeding system, a granulator is connected to the tabletting host, the granulator is connected to the granulator, a drum screen is connected to the granulator, a fine powder auger is connected to the bucket elevator, the fine powder auger is connected to the drum screen, and a granular potash fertilizer rounding and powder removing device body is connected to the discharge end of the drum screen; the invention not only can reduce the powder content of the granular potassium, but also omits the procedures of wetting, drying, cooling and screening, thereby greatly reducing the granulating cost.
Description
Technical Field
The invention relates to the technical field of potash fertilizer rounding and powder removal, in particular to a granular potash fertilizer rounding and powder removal device.
Background
With the rapid development of the fertilizer industry, the localization of potassium fertilizer granulation is basically realized from the original large-scale import of granular potassium fertilizer to the present in China, and a large number of localization dry rolling granulators are popularized and used.
However, compared with the imported large-particle potassium, the granular potassium produced by the domestic granulator has obvious defects, taking 50kg package as an example, the basic powder content of the domestic large-particle potassium is more than 5% from package, stacking and transportation to the hands of users, the imported large-particle potassium is basically free of powder, the granules are full and high in strength, and the situation appears, and through analysis, research and comparison, whether the domestic granulator or the advanced foreign granulator is found, the strength and the appearance of the just-manufactured granules are basically consistent, mainly, in order to reduce the cost, the domestic granulator has fewer working procedures, the granules produced by the domestic granulator directly enter the packaging system, and the granules produced by the foreign granulator are subjected to the following steps: the surface of the granules is wetted by steam or atomization, and then dried, cooled and sieved before entering a packaging system, and the process requires a lot of granulation cost.
The dry-method rolling granulation of potash fertilizer powder is carried out by extruding potash fertilizer powder into strips and blocks through a pair of rollers, crushing for the first time, sieving to obtain the required particle range after crushing for the second time, wherein in the process, the temperature of a pressing block generally reaches 70-80 ℃, the crushed particles are irregular and have a plurality of sharp corners, the crushed particles are sieved through a roller sieve, in the process, the irregular particles and powder roll together in the roller sieve, the sieving effect is achieved, part of edges and corners can be worn off simultaneously, the temperature of the particles is reduced slowly, but the particles directly enter a packaging system at the moment, the powder content in a packaging bag is higher, and the analysis reasons are mainly that:
The temperature of the pressing block is 70-80 ℃, the surface of the crushed particles adsorbs dust, the particles shrink after cooling, and a part of dust is adsorbed on the surface to fall off. The surface of the particles is charged with static electricity, dust is adsorbed, and the static electricity is weakened until the static electricity disappears and part of the dust falls off in the gradual cooling process of the particles.
The sharp corners of the irregular particles collide and fall off, thus causing much inconvenience to the user.
Disclosure of Invention
The invention aims to provide a granular potash fertilizer rounding and powder removing device, which not only can greatly reduce the powder content of granular potassium, but also can basically reach the quality of imported large granular potassium, and meanwhile, the procedures of wetting, drying, cooling and screening are omitted, so that the granulating cost is greatly reduced.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides a granule potash fertilizer rounding removes powder device, includes the bucket elevator, be connected with former feed bin on the bucket elevator, the lower end connection of former feed bin has quantitative reinforced auger, just former feed bin is connected with forced feeding system through quantitative reinforced auger, be connected with the preforming host computer on the forced feeding system, the preforming host computer is connected with the granulator, the granulator is connected with the whole grain machine, the whole grain machine is connected with the drum screen, still be connected with the fine powder auger on the bucket elevator, just the fine powder auger is connected with the drum screen, the discharge end of drum screen is connected with granule potash fertilizer rounding removes powder device body.
As a further scheme of the invention: the granule potash fertilizer rounding removes powder device body inside is provided with big branch feed cone, little branch feed cone and screen cloth, fixed mounting has vibration motor on the granule potash fertilizer rounding removes powder device body, just vibration motor is used for vibrating whole device body, lets the granule incessantly vibrations in the device, granule potash fertilizer rounding removes powder device body inside fixed mounting has round steel, just round steel skeleton is used for supporting the screen cloth in the granule potash fertilizer rounding removes powder device body, granule potash fertilizer rounding removes powder device body bottom and is connected with vacuum channel, granule potash fertilizer rounding removes powder device body lower end connection has the discharge gate.
As a further scheme of the invention: the large material dividing cone and the small material dividing cone are fixedly provided with a plurality of supporting legs around the annular surface, and the diameter of the large material dividing cone is larger than that of the small material dividing cone.
As a further scheme of the invention: the bucket elevator conveys materials into the raw material bin, the quantitative feeding auger quantitatively controls the materials, and the forced feeding system controls the feeding of the materials, so that the materials enter the tabletting host, and the tabletting host performs tabletting operation.
As a further scheme of the invention: the material after tabletting enters the inside of the granulator, the material after tabletting is subjected to granulating operation through the granulator, then enters the inside of the rotary screen through the granulator, and is screened by the rotary screen.
As a further scheme of the invention: the sieved materials enter the main body of the granular potash fertilizer rounding and powder removing device, the granules are subjected to collision friction rounding in a large material distribution pile and a small material distribution pile through a vibration motor, finished product granules and fine powder are sieved through a screen, and the fine powder is conveyed to a raw material bin through a vacuum channel for continuous granulation; the finished product particles enter a packaging system.
The invention has the beneficial effects that: the particles screened by the drum screen enter the system, and are screened again through the screen mesh and are separated into a large material separating cone and a small material separating cone through the screen mesh under the action of the vibration motor, and the continuous material separation and collision are carried out, so that the edges and corners of the particles are further reduced, meanwhile, the small particles and fine powder screened out are conveyed directly into a raw material device through pneumatic (vacuum) conveying to be continuously granulated, in the process, the temperature of the particles is further reduced due to lower negative pressure air temperature and stronger suction force, the electrostatic adsorption capacity is further weakened, under the continuous collision and negative pressure adsorption, dust adsorbed on the surfaces of particles is basically sucked away, and meanwhile, in the process, the rounding effect is realized, so that the particle potassium discharged through the device is full in appearance, the surface is basically free of dust, and the particle temperature basically reaches the normal temperature.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a system architecture according to the present invention;
FIG. 3 is a schematic structural view of a granular potash fertilizer rounding and powder removing device of the invention;
FIG. 4 is a schematic view of a partial structure of the present invention;
FIG. 5 is a schematic diagram of the overall structure of the large dividing cone of the invention;
FIG. 6 is a schematic diagram of the overall structure of the large dividing cone of the invention;
FIG. 7 is a schematic diagram of the overall structure of the small dividing cone of the invention;
FIG. 8 is a schematic diagram of the overall structure of the small dividing cone of the invention;
In the figure: 1. a bucket elevator; 2. a raw material bin; 3. quantitative feeding auger; 4. a forced feeding system; 5. tabletting main machine; 6. a granulator; 7. a granulator; 8. fine powder auger; 9. rounding and removing powder of the granular potash fertilizer; 10. a screen; 11. a vibration motor; 12. large material dividing cone; 13. a small material dividing cone; 14. round steel; 15. support legs; 16. a drum screen; 17. a discharge port; 18. and a vacuum channel.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-5, the granular potash fertilizer rounding and dust removing device comprises a bucket elevator 1, wherein a raw material bin 2 is connected to the bucket elevator 1, a quantitative feeding auger 3 is connected to the lower end part of the raw material bin 2, a forced feeding system 4 is connected to the raw material bin 2 through the quantitative feeding auger 3, a tabletting host 5 is connected to the forced feeding system 4, the tabletting host 5 is connected to a granulator 6, the granulator 6 is connected to a granulator 7, the granulator 7 is connected to a drum screen 16, a fine powder auger 8 is also connected to the bucket elevator 1, the fine powder auger 8 is connected to the drum screen 16, a granular potash fertilizer rounding and dust removing device body 9 is connected to the discharge end of the drum screen 16, the material passes through the raw material bin 2, is subjected to quantitative setting and forced feeding system 4, is crushed by the tabletting host 5, finally enters the drum screen 16 for sieving, and the potassium content of the granular potash fertilizer rounding and dust removing device 9 is reduced through the adopted granular potash fertilizer rounding and dust removing device, and the granulating rate is reduced;
The granule potash fertilizer rounding removes powder device body 9 is inside to be provided with big branch material awl 12, little branch material awl 13 and screen cloth 10, fixed mounting has vibration motor 11 on the granule potash fertilizer rounding removes powder device body 9, just vibration motor 11 is used for vibrating whole device body 9, lets granule incessantly vibrations in the device, granule potash fertilizer rounding removes powder device body 9 internally fixed mounting has round steel 14, just round steel skeleton 14 is used for supporting the screen cloth 10 in the granule potash fertilizer rounding removes powder device body 9, granule potash fertilizer rounding removes powder device body 9 bottom is connected with vacuum channel 18, granule potash fertilizer rounding removes powder device body 9 lower end connection has discharge gate 17, utilizes round steel 14 as the skeleton to support granule potash fertilizer rounding removes screen cloth 10 in the powder device body 9, can be in granule potash fertilizer rounding removes powder device body 9's screen cloth 10 operation in-process, and is more firm, operation is more stable;
a plurality of supporting legs 15 are fixedly arranged on the large material dividing cone 12 and the small material dividing cone 13 around the annular surface, the diameter of the large material dividing cone 12 is larger than that of the small material dividing cone 13, and the large material dividing cone 12 and the small material dividing cone 13 are driven by the vibration motor 11 so as to conveniently screen small particles and fine powder, and the efficiency is higher;
The bucket elevator 1 conveys materials into the raw material bin 2, the quantitative feeding auger 3 quantitatively controls the materials, and the forced feeding system 4 controls the feeding of the materials, so that the materials enter the tabletting host 5, and the tabletting host 5 performs tabletting operation to realize an automatic flow;
the tableted material enters the inside of the granulator 6, the granulator 6 is used for granulating the tableted material, and then the tableted material enters the inside of the rotary screen 16 through the granulator 7 and is screened by the rotary screen 16;
The sieved materials enter the granular potash fertilizer rounding and powder removing device body 9, the large material separating cone 12 and the small material separating cone 13 are used for sieving again, after the granules are subjected to collision friction rounding in the large material separating cone 12 and the small material separating cone 13 through the vibration motor 11, the finished product granules and fine powder are sieved through the screen mesh 10, the fine powder is conveyed to the raw material bin 2 through the vacuum channel 18 for continuous granulation, and the finished product granules enter the packaging system.
The working principle of the invention is as follows: the particles screened out by the rotary screen 16 enter the system, under the action of the vibration motor 11, the particles are screened again through the screen mesh and are separated into a large separating cone 12 and a small separating cone 13 continuously, the edges and corners of the particles are further reduced, meanwhile, the small particles and fine powder screened out are conveyed directly into a raw material device through pneumatic (vacuum) conveying to be continuously granulated, in the process, the temperature of the particles is further reduced due to lower negative pressure air temperature and stronger suction force, the electrostatic adsorption capacity is further weakened, under the continuous collision and negative pressure adsorption, dust adsorbed on the surfaces of the particles is basically sucked away, and meanwhile, the rounding effect is realized, the appearance of the particles discharged through the device is basically free of dust, the particle temperature is basically up to normal temperature, the powder content of the particles is reduced, and the processes of wetting, drying, cooling and screening are omitted, so that the granulating cost is greatly reduced.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. The granular potash fertilizer rounding and powder removing device is characterized by comprising a bucket elevator (1), wherein a raw material bin (2) is connected to the bucket elevator (1), a quantitative feeding auger (3) is connected to the lower end part of the raw material bin (2), the raw material bin (2) is connected with a forced feeding system (4) through the quantitative feeding auger (3), a tabletting host machine (5) is connected to the forced feeding system (4), a granulator (6) is connected to the tabletting host machine (5), a granule finishing machine (7) is connected to the granulator (6), a roller screen (16) is connected to the granule finishing machine (7), a fine powder auger (8) is further connected to the bucket elevator (1), the fine powder auger (8) is connected with the roller screen (16), and a granular potash fertilizer rounding and powder removing device body (9) is connected to the discharge end of the roller screen (16). The granule potash fertilizer rounding removes powder device body (9) inside is provided with big branch feed cone (12), little branch feed cone (13) and toper screen drum (10), fixed mounting has vibration motor (11) on granule potash fertilizer rounding removes powder device body (9), just vibration motor (11) are used for vibrations whole device body (9), let granule incessantly vibrations in the device to reach the effect of rounding and removing powder, granule potash fertilizer rounding removes powder device body (9) inside fixed mounting has round steel skeleton (14), just round steel skeleton (14) are used for supporting toper screen drum (10) in granule potash fertilizer rounding removes powder device body (9), granule potash fertilizer rounding removes powder device body (9) bottom is connected with vacuum channel (18), granule potash fertilizer rounding removes powder device body (9) lower extreme connection has discharge gate (17); a plurality of supporting legs (15) are fixedly arranged on the large material dividing cone (12) and the small material dividing cone (13) around the annular surface, and the diameter of the large material dividing cone (12) is larger than that of the small material dividing cone (13); the hopper lifter (1) conveys materials into the raw material bin (2), the quantitative feeding auger (3) quantitatively controls the materials, the forced feeding system (4) controls the feeding of the materials, the materials enter the tabletting host (5), the tabletting host (5) performs tabletting operation, the temperature of particles is further reduced due to lower negative pressure air temperature and stronger suction force, the electrostatic adsorption capacity is further weakened, and dust adsorbed on the surfaces of the particles is basically sucked away under continuous collision and negative pressure adsorption;
The materials screened by the rotary screen (16) enter the granular potash fertilizer rounding and powder removing device body (9), the granules are subjected to collision friction rounding in the large material separating cone (12) and the small material separating cone (13) through the vibration motor (11), finished product granules and fine powder are screened out through the conical screen cylinder (10), and the fine powder is conveyed to a raw material bin through the vacuum channel (18) to be granulated continuously; the finished product particles enter a packaging system.
2. The granular potash fertilizer rounding and dust removal device according to claim 1, characterized in that the material after tabletting enters the inside of the granulator (6), and the granulated material is subjected to granule crushing operation by the granulator (6) and then enters the inside of the rotary screen (16) through the granule finishing machine (7), and is screened by the rotary screen (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126805.7A CN113695054B (en) | 2021-09-26 | 2021-09-26 | Granular potash fertilizer rounding and powder removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111126805.7A CN113695054B (en) | 2021-09-26 | 2021-09-26 | Granular potash fertilizer rounding and powder removing device |
Publications (2)
| Publication Number | Publication Date |
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| CN113695054A CN113695054A (en) | 2021-11-26 |
| CN113695054B true CN113695054B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111126805.7A Active CN113695054B (en) | 2021-09-26 | 2021-09-26 | Granular potash fertilizer rounding and powder removing device |
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| CN (1) | CN113695054B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201208552Y (en) * | 2008-05-07 | 2009-03-18 | 孙宝法 | Dry process rolling granulator |
| CN210546260U (en) * | 2019-07-12 | 2020-05-19 | 李枝兵 | Fertilizer cooling and screening system |
| CN212441967U (en) * | 2020-05-19 | 2021-02-02 | 石家庄宇惠制药有限公司 | Improved generation vibration rotation type gumming machine |
| CN215997017U (en) * | 2021-09-26 | 2022-03-11 | 常州市神工造粒设备有限公司 | Granular potash fertilizer rounding and powder removing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IS1736B (en) * | 1993-10-01 | 1999-12-30 | Astra Ab | Methods and devices that promote increased particle aggregation |
| CN1507956A (en) * | 2002-12-13 | 2004-06-30 | 中国石油化工股份有限公司巴陵分公司 | Solid particle dust screening method |
| CN113351113B (en) * | 2021-06-16 | 2023-05-09 | 珠海瑞思普利医药科技有限公司 | Extrusion rounding equipment and extrusion rounding method |
-
2021
- 2021-09-26 CN CN202111126805.7A patent/CN113695054B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201208552Y (en) * | 2008-05-07 | 2009-03-18 | 孙宝法 | Dry process rolling granulator |
| CN210546260U (en) * | 2019-07-12 | 2020-05-19 | 李枝兵 | Fertilizer cooling and screening system |
| CN212441967U (en) * | 2020-05-19 | 2021-02-02 | 石家庄宇惠制药有限公司 | Improved generation vibration rotation type gumming machine |
| CN215997017U (en) * | 2021-09-26 | 2022-03-11 | 常州市神工造粒设备有限公司 | Granular potash fertilizer rounding and powder removing device |
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| CN113695054A (en) | 2021-11-26 |
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