CN114394441A - Automatic feeding device for rod-shaped metal sodium catalyst - Google Patents
Automatic feeding device for rod-shaped metal sodium catalyst Download PDFInfo
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- CN114394441A CN114394441A CN202210092692.1A CN202210092692A CN114394441A CN 114394441 A CN114394441 A CN 114394441A CN 202210092692 A CN202210092692 A CN 202210092692A CN 114394441 A CN114394441 A CN 114394441A
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- Prior art keywords
- conveying
- weighing
- bin
- feeding device
- automatic feeding
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- 239000003054 catalyst Substances 0.000 title claims abstract description 22
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims description 14
- 229910052708 sodium Inorganic materials 0.000 title claims description 14
- 239000011734 sodium Substances 0.000 title claims description 14
- 229910052751 metal Inorganic materials 0.000 title claims description 13
- 239000002184 metal Substances 0.000 title claims description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 78
- 238000007599 discharging Methods 0.000 claims abstract description 28
- 238000005303 weighing Methods 0.000 claims abstract description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000007723 transport mechanism Effects 0.000 claims description 9
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000011112 process operation Methods 0.000 abstract 1
- 239000003999 initiator Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008030 superplasticizer Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/005—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/54—Gates or closures
- B65D90/66—Operating devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/42—Devices for emptying otherwise than from the top using belt or chain conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
- B65G69/181—Preventing escape of dust by means of sealed systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses an automatic feeding device for a rod-shaped sodium metal catalyst, which comprises a stock bin mechanism, a conveying mechanism, a weighing mechanism and a control system, wherein the stock bin mechanism is connected with the conveying mechanism; the bin mechanism comprises a filling opening, a bin, a material baffle, a discharging cylinder and a discharging opening; the conveying mechanism comprises a conveying belt, a conveying motor and a conveying channel, and the conveying belt is hermetically arranged in the conveying channel; the weighing mechanism comprises a weighing bracket, a weighing sensor and a counter; a discharge port of the stock bin mechanism is connected with an inlet of a conveying channel of the conveying mechanism; the weighing mechanism is connected with the bin mechanism; the outlet of the conveying channel of the conveying mechanism is connected with a feed opening, and the feed opening is connected with the feed opening of the reactor; the device is automatically controlled by a control system. The invention adopts a totally-enclosed structure and nitrogen seal protection, has metering indication and alarm interlocking, has time and speed setting, can carry out parameter adjustment according to the process requirements, can carry out batch control program in a configurable manner, is remotely and automatically controlled, is simple and convenient to operate, eliminates the safety risk of manual feeding, and realizes the intrinsic safety of process operation.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to an automatic feeding device for a rod-shaped sodium metal catalyst.
Background
In recent years, with the increase of the demand of concrete in the field of construction in China, the demand of novel high-performance concrete is increasing day by day, a metal sodium catalyst is needed for producing a novel polycarboxylate superplasticizer polyether monomer, and the original preparation method cannot meet the requirements of safety and efficiency, so that the improvement of the automation degree of catalyst preparation for meeting the production requirement is imperative.
The traditional sodium metal rod catalyst is prepared by adopting a manual direct input mode, combustible and explosive gas can be generated by opening a feed opening and contacting water or alcohol with sodium metal, the combustible and explosive gas is mixed with air to reach the explosion limit, the potential safety hazard is very large, and the personnel injury and the property loss are caused by the occurrence of operation accidents in the working section of domestic multiple fine chemical enterprises.
The conventional feeding method of the rodlike sodium metal catalyst is characterized in that a hand-operated box is arranged above a feeding port of a chain initiator, and a filling hand hole, two operating hand holes, a vent port, a nitrogen replacement port and two sight glasses are arranged on the hand-operated box. Before throwing the material at every turn, operating personnel carries out catalyst sodium stick through filling the hand hole earlier and loads, and loading capacity 20~40kg, then closes and fills the hand hole and carry out nitrogen gas replacement, then opens the operation hand hole and drops into chain initiator charge door through two latex gloves with the metal sodium stick that fills, and the chain initiator agitator will be worked on in the input process to open the drain and fill nitrogen protection all the time, input speed and input amount manual control.
The traditional method completely depends on manpower, the input amount may be inaccurate, and the input speed may cause the reaction speed to be too fast or too slow, so that the reaction index and the reaction period for preparing the initiator are unstable. Various inspections and operations in the traditional method need to be implemented manually, once the damage caused by misoperation is extremely large, personal injury accidents are easy to occur.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide the automatic feeding device for the rodlike sodium metal catalyst, which is simple to operate, accurate in feeding, safe and reliable.
The technical scheme adopted by the invention for solving the technical problem is as follows: an automatic feeding device for a rod-shaped sodium metal catalyst comprises a stock bin mechanism, a conveying mechanism, a weighing mechanism and a control system; the bin mechanism comprises a filling opening, a bin, a material baffle, a discharging cylinder and a discharging opening; the conveying mechanism comprises a conveying belt, a conveying motor and a conveying channel, and the conveying belt is hermetically arranged in the conveying channel; the weighing mechanism comprises a weighing bracket, a weighing sensor and a counter; the discharge port of the stock bin mechanism is connected with the inlet of the conveying channel of the conveying mechanism; the weighing mechanism is connected with the stock bin mechanism and is used for recording feeding amount and feeding times; the outlet of the conveying channel of the conveying mechanism is connected with a feed opening, and the feed opening is connected with the feed opening of the reactor; the automatic feeding device is automatically controlled by the control system.
Further, the feed bin mechanism with transport mechanism is airtight setting, the feed bin mechanism with lead to nitrogen gas in the airtight environment that transport mechanism formed, nitrogen gas's pressure is 0.5~1.0 MPa.
Furthermore, in the stock bin mechanism, the number of the discharging cylinders is 8, and each discharging cylinder correspondingly controls the opening and closing of one material baffle.
Further, still include the upset motor in the feed bin mechanism, the upset motor is used for controlling the feed bin carries out the upset unloading.
Furthermore, the connection part of the stock bin mechanism and the conveying mechanism is in overturning soft connection.
Furthermore, the control system comprises a PLC control system and a touch screen, and the control system is provided with a communication interface connected with the DCS; the control system is used for controlling the discharging of the stock bin mechanism, the feeding of the conveying mechanism, the metering of the weighing mechanism and the discharging of the discharging opening.
The invention has the beneficial effects that: compared with the prior art, the automatic feeding device provided by the invention has the following advantages:
1) the method has the advantages that except for filling the metal sodium rod into the storage bin, other processes are completely and automatically completed by the control system, time and speed are set, the adding speed can be adjusted according to process requirements, batch control programs can be dynamically carried out, remote automatic control is realized, the operation is simple and convenient, and the method can be used for adding at one time or adding in sections, so that the catalyst preparation reaction period is shortened; the feeding device adopts a fully-closed structure, and nitrogen sealing protection is performed in the whole feeding process.
2) The reaction process of adding and preparing the catalyst is unmanned, the system automatically checks and confirms that the error probability is low, the potential safety hazard, the safety accident and the personnel injury caused by manual misoperation are avoided, and the intrinsic safety is realized.
3) The input amount and the input speed depend on a PLC system and a precise weighing sensor, and the measurement indication and the alarm interlocking are realized, so that the measurement is accurate and the speed is stable.
Drawings
Fig. 1 is a schematic front structural view of an automatic feeding device provided by the present invention.
Fig. 2 is a schematic side view of the automatic feeding device according to the present invention.
Wherein, 1-a filling opening; 2-a storage bin; 3-discharging port; 4-a discharging cylinder; 5-a conveying channel; 6-a feed opening; 7-a conveyor belt; 8-a conveying motor; 9-a weighing sensor; 10-weighing support; 11-turning over the flexible connection; 12-material baffle.
Detailed Description
The invention is further illustrated by the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1 and 2, an automatic feeding device for a rod-shaped sodium metal catalyst comprises a stock bin mechanism, a conveying mechanism, a weighing mechanism and a control system; the bin mechanism comprises a filling opening 1, a bin 2, a material baffle 12, a discharging cylinder 4 and a discharging opening 3; the conveying mechanism comprises a conveying belt 7, a conveying motor 8 and a conveying channel 5, and the conveying belt 7 is hermetically arranged in the conveying channel 5; the weighing mechanism comprises a weighing bracket 10, a weighing sensor 9 and a counter; the discharge port 3 of the stock bin mechanism is connected with the inlet of the conveying channel 5 of the conveying mechanism; the weighing mechanism is connected with the stock bin mechanism and is used for recording feeding amount and feeding times; the outlet of the conveying channel 5 of the conveying mechanism is connected with a feed opening 6, and the feed opening 6 is connected with a feed inlet of the reactor; the automatic feeding device is automatically controlled by the control system.
The feed bin mechanism with transport mechanism is airtight setting, feed bin mechanism with lead to in the airtight environment that transport mechanism formed has nitrogen gas, the pressure of nitrogen gas is 0.5~1.0 MPa. Feed bin structure and transport mechanism adopt nitrogen to seal, can block to throw the contact of material device and outside air, moisture, avoid metal sodium contact water or mellow wine can produce easily fire explosive gas and air mixing and reach the explosion limit, cause the potential safety hazard.
In the stock bin mechanism, the number of the discharging cylinders 4 is 8, and each discharging cylinder 4 correspondingly controls the opening and closing of one material baffle 12. The discharging cylinder 4 opens the material baffle 12 in sequence, the metal sodium rod is put on the conveyer belt 7, and the conveyer motor 8 conveys the metal sodium rod to the discharging opening 6 at a set speed and then drops the metal sodium rod into the reactor by means of gravity.
Still include the upset motor in the feed bin mechanism, the upset motor is used for control feed bin 2 overturns the unloading, the feed bin mechanism with transport mechanism's junction is upset flexible coupling 11. The metal sodium rod is guaranteed not to deflect when being thrown to the middle position of the starting end of the conveying belt 7 every time.
The control system comprises a PLC control system and a touch screen, and is provided with a communication interface connected with the DCS; the control system is used for controlling the discharging of the stock bin mechanism, the feeding of the conveying mechanism, the metering of the weighing mechanism and the discharging of the discharging opening 6.
The automatic feeding device has the following working modes: this feeding device installs in chain initiator reactor feed inlet department, and the totally enclosed system of feeding device blocks and contacts with outside air and moisture, inside feed bin mechanism, transport mechanism that set up. Before feeding, an operator opens the filling opening 1 above the bin 2, puts a sodium metal rod into the bin 2, and closes the filling opening 1 above the bin 2 with a one-time filling amount of 50-100 kg, and the operator can leave after informing the control system. The control system starts a catalyst preparation batch control program, and detects the filling weight, the system airtightness, the states of a valve and a motor and the like. After the completion of the operation, a charging hole valve of the chain initiator reactor is automatically opened, a stock bin mechanism and a conveying mechanism are started, a material baffle 12 is sequentially opened through a material discharging cylinder 4 to discharge the materials onto a conveying belt 7 of the conveying mechanism, and in order to ensure accurate placement, a turning motor is arranged to turn over and discharge the stock bin 2; the method comprises the following steps of feeding a metal sodium rod catalyst into a chain initiator reactor according to a set amount and speed, feeding one metal sodium rod each time, recording the weight once by a weighing sensor 9, stopping a stock bin mechanism and a conveying mechanism and closing a reactor feed inlet valve after the input amount reaches the designed amount, and automatically closing a system after the input is finished.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (6)
1. The utility model provides a material device is thrown automatically to bar metal sodium catalyst which characterized in that: the automatic feeding device comprises a stock bin mechanism, a conveying mechanism, a weighing mechanism and a control system; the bin mechanism comprises a filling opening, a bin, a material baffle, a discharging cylinder and a discharging opening; the conveying mechanism comprises a conveying belt, a conveying motor and a conveying channel, and the conveying belt is hermetically arranged in the conveying channel; the weighing mechanism comprises a weighing bracket, a weighing sensor and a counter; the discharge port of the stock bin mechanism is connected with the inlet of the conveying channel of the conveying mechanism; the weighing mechanism is connected with the stock bin mechanism and is used for recording feeding amount and feeding times; the outlet of the conveying channel of the conveying mechanism is connected with a feed opening, and the feed opening is connected with the feed opening of the reactor; the automatic feeding device is automatically controlled by the control system.
2. The automatic feeding device of the rod-shaped sodium metal catalyst as claimed in claim 1, wherein: the feed bin mechanism with transport mechanism is airtight setting, feed bin mechanism with lead to in the airtight environment that transport mechanism formed has nitrogen gas, the pressure of nitrogen gas is 0.5~1.0 MPa.
3. The automatic feeding device of the rod-shaped sodium metal catalyst as claimed in claim 1, wherein: in the feed bin mechanism, the number of the discharging cylinders is 8, and each discharging cylinder correspondingly controls the opening and closing of one material baffle.
4. The automatic feeding device of the rod-shaped sodium metal catalyst as claimed in claim 1, wherein: the storage bin mechanism further comprises a turnover motor, and the turnover motor is used for controlling the storage bin to turn over and discharge materials.
5. The automatic feeding device of the rod-shaped sodium metal catalyst as claimed in claim 4, wherein: the connection part of the stock bin mechanism and the conveying mechanism is in overturning flexible connection.
6. The automatic feeding device of the rod-shaped sodium metal catalyst as claimed in claim 1, wherein: the control system comprises a PLC control system and a touch screen, and is provided with a communication interface connected with the DCS; the control system is used for controlling the discharging of the stock bin mechanism, the feeding of the conveying mechanism, the metering of the weighing mechanism and the discharging of the discharging opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092692.1A CN114394441A (en) | 2022-01-26 | 2022-01-26 | Automatic feeding device for rod-shaped metal sodium catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210092692.1A CN114394441A (en) | 2022-01-26 | 2022-01-26 | Automatic feeding device for rod-shaped metal sodium catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114394441A true CN114394441A (en) | 2022-04-26 |
Family
ID=81233843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210092692.1A Pending CN114394441A (en) | 2022-01-26 | 2022-01-26 | Automatic feeding device for rod-shaped metal sodium catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114394441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115520672A (en) * | 2022-09-29 | 2022-12-27 | 安徽松羽生物系统工程有限公司 | Closed feeding device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19643340A1 (en) * | 1996-04-13 | 1997-10-16 | Kliro Anlagenbau Gmbh & Co Kg | Feed device for dosed feeding of loose material from silo container |
| CN101775488A (en) * | 2010-01-28 | 2010-07-14 | 北京科技大学 | Method for conveying thermal-state rotary furnace metallized pellets in anharmonic vibration mode |
| CN203615762U (en) * | 2014-01-28 | 2014-05-28 | 山东江岳科技开发股份有限公司 | Charging system for catalyst roasting furnace |
| CN205169725U (en) * | 2015-10-29 | 2016-04-20 | 大理州大维肥业有限责任公司 | Automatic reinforced compounding device |
| CN106174679A (en) * | 2016-08-25 | 2016-12-07 | 红塔烟草(集团)有限责任公司 | A kind of efficient separation material-returning device |
| CN107539799A (en) * | 2017-10-11 | 2018-01-05 | 顾亚明 | A kind of biscuit production feeding device |
| CN210823708U (en) * | 2019-10-22 | 2020-06-23 | 张家口汇德冶金材料有限公司 | Many excellent formula granule feed bin accuse material device |
-
2022
- 2022-01-26 CN CN202210092692.1A patent/CN114394441A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19643340A1 (en) * | 1996-04-13 | 1997-10-16 | Kliro Anlagenbau Gmbh & Co Kg | Feed device for dosed feeding of loose material from silo container |
| CN101775488A (en) * | 2010-01-28 | 2010-07-14 | 北京科技大学 | Method for conveying thermal-state rotary furnace metallized pellets in anharmonic vibration mode |
| CN203615762U (en) * | 2014-01-28 | 2014-05-28 | 山东江岳科技开发股份有限公司 | Charging system for catalyst roasting furnace |
| CN205169725U (en) * | 2015-10-29 | 2016-04-20 | 大理州大维肥业有限责任公司 | Automatic reinforced compounding device |
| CN106174679A (en) * | 2016-08-25 | 2016-12-07 | 红塔烟草(集团)有限责任公司 | A kind of efficient separation material-returning device |
| CN107539799A (en) * | 2017-10-11 | 2018-01-05 | 顾亚明 | A kind of biscuit production feeding device |
| CN210823708U (en) * | 2019-10-22 | 2020-06-23 | 张家口汇德冶金材料有限公司 | Many excellent formula granule feed bin accuse material device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115520672A (en) * | 2022-09-29 | 2022-12-27 | 安徽松羽生物系统工程有限公司 | Closed feeding device |
| CN115520672B (en) * | 2022-09-29 | 2024-06-04 | 安徽松羽生物系统工程有限公司 | Closed feeding device |
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Application publication date: 20220426 |
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