CN115352660A - Packaging method of gas-powder-state phosphorus chemical product - Google Patents
Packaging method of gas-powder-state phosphorus chemical product Download PDFInfo
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- CN115352660A CN115352660A CN202211150744.2A CN202211150744A CN115352660A CN 115352660 A CN115352660 A CN 115352660A CN 202211150744 A CN202211150744 A CN 202211150744A CN 115352660 A CN115352660 A CN 115352660A
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- gaseous
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 93
- 239000000126 substance Substances 0.000 title claims abstract description 51
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000011574 phosphorus Substances 0.000 title claims abstract description 32
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 134
- 238000000926 separation method Methods 0.000 claims description 33
- 230000007306 turnover Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 210000003437 trachea Anatomy 0.000 claims 2
- 238000012856 packing Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 7
- 230000036541 health Effects 0.000 abstract description 3
- 238000012858 packaging process Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 2
- 230000005484 gravity Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/28—Controlling escape of air or dust from containers or receptacles during filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
- B65B1/32—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
- B65B1/46—Check-weighing of filled containers or receptacles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Vacuum Packaging (AREA)
- Basic Packing Technique (AREA)
Abstract
The invention discloses a packaging method of a gas-powder phosphorus chemical product, which comprises the following steps: s1, quantitatively packaging phosphorus chemical products; s2, in the packaging process, collecting and recycling gas-powder substances; s3, after the bag is reweighed and sealed by a semi-automatic packing machine in a gas-powder state, the bag enters a packing bag conveyor for the gas-powder state; s4, collecting and recycling the gas powder state in the conveying process of the packaging bag conveyor. The gas-powder collecting device is arranged to collect gas-powder products generated in the packaging process of the powder products, so that on one hand, the working environment is improved, a large amount of dust generated in a factory building is prevented from causing danger, and meanwhile, the body health of workers is prevented from being influenced; on the other hand, the product loss is reduced, and the income is improved.
Description
Technical Field
The invention relates to the technical field of packaging methods of gas-powder-state phosphorus chemical products, in particular to a packaging method of gas-powder-state phosphorus chemical products.
Background
The calcium hydrophosphate, a phosphorus chemical product, is a powdery product, when being packaged, part of the product can scatter in the air, namely, the gaseous state, and the gaseous state product scatters in the air, and the product scattered in the air can be sucked into the body by workers, so that the health of the workers is influenced; meanwhile, when the gas-powder state substances are scattered in the air and reach a certain concentration, dust is formed, so that explosion easily occurs and danger is caused; these gaseous powdery substances are part of the phosphorus chemical products, and if they cannot be collected, the product yield will be affected, and the plant income will be affected.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a method for packaging a gaseous and powdered phosphorus chemical product.
According to the technical scheme provided by the embodiment of the application, the packaging method of the gas-powder phosphorus chemical product comprises the following steps:
S1
conveying powdery phosphorus chemical products in a storage tank into a metering device through a horizontally placed spiral conveyor, quantifying, and carrying out closed conveying in the whole conveying process;
S2
after the product in the metering device is quantified, opening a discharge port of the metering device, enabling the product to fall into a packaging bag on a semi-automatic packaging machine for gas and powder states through phosphorus chemical packaging equipment, collecting the gas and powder state product generated in the falling process through a gas and powder state collecting device A on the semi-automatic packaging machine for gas and powder states, pumping the gas and powder state substance at a conical collecting port into a separation column through an exhaust fan, separating the gas and powder state substance by a spiral separation plate in the separation column, discharging light gas from a gas outlet, separating the gas and powder state product due to gravity, and conveying the separated product into a storage tank through a lifting machine;
the phosphorus chemical packaging equipment is the packaging equipment recorded in the phosphorus product packaging equipment with the publication number of CN 211969898U.
S3
The packaging bag provided with the product is reweighed by a reweighing platform on the semi-automatic packaging machine in the gas powder state and then sealed, and the sealed packaging bag is pushed over on a packaging bag conveyor in the gas powder state by a turnover mechanism to be conveyed;
S4
after the packaging bags pass through an inclined conveying section, an ascending conveying section, a bulk product scattering and conveying section and a packaging bag height limiting conveying section on a packaging bag conveyor for gas-powder state, the powdery chemical phosphide products are uniformly distributed in the packaging bags, so that the packaging bags are convenient to stack;
S5
the gas powder state product generated by the packaging bag on the gas powder state packaging bag conveyor is collected by the gas powder state collecting device B for later use.
Preferably, the semi-automatic packing machine for the gas powder state is provided with a conveying belt, a gas powder state collecting device A, a compound weighing display device, a bag sealing device and a turnover mechanism are sequentially arranged on the end face of the rear side of the conveying belt, the gas powder state collecting device A collects gas powder state substances through a conical collecting port, the conical collecting port is communicated with the middle part of a separation column through an exhaust fan, the separation column is vertically placed, a spiral separation plate is arranged in the separation column, the upper end face of the separation column is provided with an obliquely-arranged horizontal air outlet, the lower end face of the separation column is provided with a discharge port, the spiral separation plate is vertically placed in a spiral shape, and the vertical central line of the spiral separation plate and the vertical central line of a separation shell on the separation column are located on the same vertical line.
Preferably, the turnover plate on the turnover mechanism is turned over through the air cylinder, and the upper end part of the turnover plate is hinged with the two support columns.
Preferably, the bottom of the packing bag conveyor for gaseous powder is provided with a gaseous powder product guide air pipe and a gaseous powder collecting device B, the gaseous powder product guide air pipe is positioned at the front section of the gaseous powder collecting device B, the gaseous powder product guide air pipe is provided with a gas nozzle, and the gas nozzles are all opposite to the spiral column in the gaseous powder collecting device B.
Preferably, storehouse is collected including the toper to gaseous powder collection device B, is equipped with the spiral post that the slope was placed in the storehouse is collected to the toper, and the outside surface of spiral post is equipped with fixed bucket, and fixed bucket is fixed to be passed the toper and is collected the storehouse, and the up end of fixed bucket is equipped with the outlet duct, and the lower terminal surface of fixed bucket is equipped with the discharging pipe.
To sum up, the beneficial effect of this application: the invention has the following advantages:
1. when the powdery phosphorus chemical product is packaged, the powder collecting device A is arranged on the semi-automatic packaging machine, so that a large amount of gas-powder substances are prevented from being generated in the packaging process of the powdery substance and being scattered in the air, and the health of workers is prevented from being influenced;
2. in the process of conveying powdery phosphorus chemical products, because the inclined conveying section, the massive product scattering section and the packaging bag height limiting section are arranged on the conveyor for the convenience of stacking, in the process, the powdery products are vibrated and easily generate air in which the gas-powder products are scattered, and the gas-powder state collecting device B is arranged in the product conveying process to collect the gas-powder products, so that the working environment is improved, the product loss is reduced and the income is increased;
3. according to the invention, the gas-powder collecting device A and the gas-powder collecting device B both adopt the spiral columns to guide gas, and the gas-powder product is collected according to the self gravity, so that the structure is simple, and the manufacturing cost is low.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is an overall process flow diagram of the present invention;
FIG. 2 is a schematic view of a semi-automatic packing machine for gaseous powder of the present invention;
FIG. 3 is a schematic rear side view of the gas-powder collecting device A according to the present invention;
FIG. 4 is a schematic cross-sectional view of a separation column according to the present invention;
FIG. 5 is a schematic front view of the packing bag conveyor for gaseous state according to the present invention;
FIG. 6 is a schematic rear side view of the gas-powder collecting device B according to the present invention;
FIG. 7 is a schematic sectional view of the gas-powder collecting device B of the present invention.
Reference numbers in the figures: a semi-automatic packing machine-1 is used for gas powder state; a conveyor belt-11; a gas-powder state collecting device A-12; a tapered collection port-121; an exhaust fan-122; a separation column-123; separation shell-1231; a spiral separation plate-1232; air outlet-124 and discharge outlet-125; the display device-13 is called again; a bag sealing device-14; a turnover mechanism-15; a packaging bag conveyor-2 for gas powder; guiding the gas-powder product to a gas pipe-21; a gas-powder state collecting device B-22; a conical collection bin-221; a screw column-222; a stationary barrel-223; an outlet pipe-224; a discharge pipe-225; an inclined conveying section-A, an ascending conveying section-B, a bulk product scattering conveying section-C and a packaging bag height limiting conveying section-D.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, a method for packaging a gaseous phosphorus chemical product comprises the following steps: after the phosphorus chemical products in the storage tank pass through a screw conveyor, a metering device and phosphorus chemical packaging equipment, quantitative phosphorus chemical products fall into a packaging bag on a conveying belt 11 of a semi-automatic packaging machine 1 for gas powder state, dust can be raised in the process that the phosphorus chemical products fall into the packaging bag, namely gas powder state substances, the gas powder state substances are collected by a gas powder state collecting device A12 on the semi-automatic packaging machine 1 for gas powder state, and the collected phosphorus chemical products are conveyed into the storage tank through a lifting machine for repacking;
the packaging bag on the semi-automatic packaging machine 1 for gas powder state is conveyed by the conveying belt 11, after the packaging bag is sealed by the compound weighing display device 13 and the bag sealing device 14, when the packaging bag passes through the turnover mechanism 15, the packaging bag is pushed to the packaging bag conveyor 2 for gas powder state by the turnover plate on the turnover mechanism 15,
after the packaging bags are shaken and patted by the inclined conveying section A, the ascending conveying section B, the block-shaped product scattering conveying section C and the packaging bag height limiting conveying section D on the packaging bag conveyor 2 for the gas-powder state, the packaging bags are cuboid and convenient to stack.
However, in the process of shaking and flapping the packaging bag with the powder product inside on the packaging bag conveyor 2 for gas-powder state, a part of the powder product is scattered out of the packaging bag to become a gas-powder state substance, and at this time, the gas-powder state product positioned below the packaging bag conveyor 2 for gas-powder state is guided to the gas nozzle of the gas pipe 21 to spray gas, so that the gas flow below the packaging bag conveyor 2 for gas-powder state is driven to flow, and the gas-powder state product enters the gas-powder state collecting device B22 to be recycled.
As shown in fig. 2, fig. 3 and fig. 4, the gas-powder state collecting device a12 on the semi-automatic packing machine 1 for gas-powder state, the re-weighing display device 13, the bag sealing device 14, and the turning mechanism 15 are placed in a sequence from right to left, the gas-powder state substances generated during packing are collected first, then the packing bags are manually re-weighed, then the bags are sealed, the packing bags of the bags are conveyed to the turning mechanism 15 through the conveying belt 11, the turning plate is turned over on the supporting rod by the cylinder on the turning mechanism 15, and the packing bags are pushed onto the conveying belt of the packing bag conveyor 2 for gas-powder state below the conveying belt 11.
As shown in fig. 6 and 7, the gaseous powder packaging bag conveyor 2 is a drum conveyor, and in the whole conveying process, the gaseous powder product guiding air pipes 21 are all installed at one side end part below the gaseous powder packaging bag conveyor 2, and the gaseous powder collecting device B22 is located right below the gaseous powder packaging bag conveyor 2, so that the gaseous powder products can be conveniently collected.
The working principle of the gas-powder product guiding gas pipe 21 and the gas-powder collecting device B22 is as follows: when the gas nozzle sprays gas to the spiral column 222 in the gas-powder collecting device B22, the gas-powder suspended above the packing bag conveyor 2 for gas-powder will flow downwards due to the airflow below the conveyor, part of the gas-powder flowing downwards directly falls into the bottom of the conical collecting bin 221 for direct collection due to gravity, and part of the gas-powder will spray to the inclined spiral column 222 along with the gas nozzle, and the gas is guided spirally on the spiral column 222, will enter the fixed barrel 223, and finally goes out from the gas outlet pipe 224 due to the gas rising, while the gas-powder is directly dropped to the bottom of the fixed barrel 223 due to the gravity of the gas-powder, and finally collects materials from the material outlet pipe 225.
The working principle of the gas-powder state collecting device A12 is as follows: the gas and powder state substance is sucked into the separation column 123 through the exhaust fan 122 connected with the conical collection port 121, the gas and powder state substance enter the middle part of the vertically arranged separation column 123 together, the gas moves upwards, the gas and powder state substance can move downwards due to the self gravity, so the gas is guided upwards and the gas and powder state substance is guided downwards under the action of the separation shell 1231 and the spiral separation plate 1232 of the separation column 123, finally the gas is discharged from the gas outlet 124 at the upper part, the material is discharged from the discharge port 125 at the lower part, and in order to prevent a part of the gas and powder state substance from being discharged from the gas outlet 124 at the upper part, the gas outlet 124 is arranged to be vertical to the separation column 123, namely, the gas outlet 124 is horizontally arranged.
Example 1
S1
Conveying the powdery phosphorus chemical products in the storage tank into a metering device through a screw conveyor and quantifying;
S2
after the product in the metering device is quantified, opening a discharge port of the metering device, enabling the product to fall into a packaging bag on the semi-automatic packaging machine 1 for gas powder state through phosphorus chemical packaging equipment, collecting the generated gas powder state product through a gas powder state collecting device A12 on the semi-automatic packaging machine 1 for gas powder state, and conveying the collected product into a storage tank through a lifting machine;
a dust detector is arranged at the semi-automatic packing machine 1 for detecting the gas powder state to obtain the concentration of the dust in the factory building of 2.0 +/-0.05 mg/M 3 。
S3
The packaging bag provided with the product is reweighed by a reweighing platform on the semi-automatic packaging machine 1 in the gas powder state and then sealed, and the sealed packaging bag is pushed over on a packaging bag conveyor 2 in the gas powder state by a turnover mechanism 15 to be conveyed;
S4
after the packaging bags pass through the inclined conveying section, the ascending conveying section, the bulk product scattering conveying section and the packaging bag height limiting conveying section on the packaging bag conveyor 2 for gas-powder state, the powdery chemical phosphide products are uniformly distributed in the packaging bags, and the stacking is convenient;
S5
the gas-powder state products generated by the packaging bags on the gas-powder state packaging bag conveyor 2 are collected by a gas-powder state collecting device B22 for standby.
A dust detector is arranged at the position of the packaging bag conveyor 2 for detecting in a gas-powder state to obtain the dust concentration in the factory building of 1.18 +/-0.05 mg/M 3 。
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles and techniques that may be employed. Meanwhile, the scope of the invention according to the present application is not limited to the technical solutions in which the above-described technical features are combined in a specific manner, and also covers other technical solutions in which the above-described technical features or their equivalent are combined arbitrarily without departing from the inventive concept described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (6)
1. A packaging method of gas-powder phosphorus chemical products is characterized in that: the method comprises the following steps:
S1
conveying the powdery phosphorus chemical products in the storage tank into a metering device through a screw conveyor and quantifying;
S2
after the product in the metering device is quantified, opening a discharge port of the metering device, enabling the product to fall into a packaging bag on the semi-automatic packaging machine (1) for gas powder state through phosphorus chemical packaging equipment, collecting the generated gas powder state product through a gas powder state collecting device A (12) on the semi-automatic packaging machine (1) for gas powder state, and conveying the collected product into a storage tank through a lifting machine;
S3
the packaging bag provided with the product is reweighed by a reweighing platform on the semi-automatic packaging machine (1) for gas powder state and then sealed, and the packaging bag after being sealed is pushed over on the packaging bag conveyor (2) for gas powder state by a turnover mechanism (15) for conveying;
S4
after the packaging bags pass through an inclined conveying section, an ascending conveying section, a bulk product scattering and conveying section and a packaging bag height limiting conveying section on a packaging bag conveyor (2) for gas-powder state, the powdery chemical phosphide products are uniformly distributed in the packaging bags, so that the packaging bags are convenient to stack;
S5
the gas-powder products generated by the packaging bag on the gas-powder packaging bag conveyor (2) are collected by a gas-powder collecting device B (22) for standby.
2. The packaging method of the gas-powder phosphorus chemical product according to claim 1, wherein:
the gas-powder state in the step S2 is contained by a semi-automatic packaging machine (1),
the conveying belt (11), wherein a compound weighing platform is arranged in the conveying belt (11);
the gas-powder state collecting device A (12), the compound weighing display device (13), the bag sealing device (14) and the turnover mechanism (15) are sequentially fixed on the rear end face of the conveying belt (11) from right to left;
the gas-powder state collecting device A (12) comprises a conical collecting port (121), an exhaust fan (122) and a separating column (123), wherein the conical collecting port (121) is communicated with the middle part of the separating column (123) through the exhaust fan (122),
the separation column (123) comprises a separation shell (1231) and a spiral separation plate (1232), the separation shell (1231) is of a vertically-placed cylindrical structure, the spiral separation plate (1232) is fixed on the inner side surface of the separation shell (1231), the vertical center line of the spiral separation plate (1232) and the vertical center line of the separation shell (1231) are located on the same straight line,
the upper end face of the separation shell (1231) is provided with a horizontal air outlet (124), and the lower end face of the separation shell (1231) is provided with a discharge hole (125).
3. The packaging method of the gas-powder phosphorus chemical product as claimed in claim 2, wherein: turnover mechanism (15) are including support column (151), returning face plate (152) and cylinder (153), cylinder (153) are articulated the upper end position of returning face plate (152) rear end face, the upper end position of returning face plate (152) is articulated support column (151).
4. The packaging method of the gas-powder phosphorus chemical product according to claim 3, wherein: gaseous powder is wrapping bag conveyer (2) for in step S4 is drum-type conveyer, be equipped with gaseous powder product direction trachea (21) and gaseous collection device B (22) on gaseous powder is wrapping bag conveyer (2) for, gaseous powder collection device B (22) are fixed under gaseous powder is wrapping bag conveyer (2), gaseous powder product direction trachea (21) are fixed on gaseous powder is wrapping bag conveyer (2) for the preceding tip of gaseous powder collection device B (22) up end.
5. The packaging method of the gaseous phosphorus chemical product as claimed in claim 4, wherein the packaging method comprises the following steps: storehouse (221) is collected including the toper to gaseous powder collection device B (22), be equipped with spiral post (222) that the slope was placed in storehouse (221) is collected to the toper, the outside surface of spiral post (222) is equipped with fixed bucket (223), fixed bucket (223) are fixed to be passed storehouse (221) is collected to the toper, the up end of fixed bucket (223) is equipped with outlet duct (224), the lower terminal surface of fixed bucket (223) is equipped with discharging pipe (225).
6. The packaging method of the gas-powder phosphorus chemical product as claimed in claim 5, wherein: and gas nozzles are arranged on the gas powder product guide gas pipe (21) and all point to the spiral columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211150744.2A CN115352660B (en) | 2022-09-21 | 2022-09-21 | Packaging method of gas-powder state phosphorus chemical product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211150744.2A CN115352660B (en) | 2022-09-21 | 2022-09-21 | Packaging method of gas-powder state phosphorus chemical product |
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| CN115352660A true CN115352660A (en) | 2022-11-18 |
| CN115352660B CN115352660B (en) | 2024-05-31 |
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| CN108722667A (en) * | 2018-06-15 | 2018-11-02 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of magnetic material dry grinding horizontal dry separation device |
| CN210455476U (en) * | 2019-04-28 | 2020-05-05 | 陈洪平 | Novel dry powder fire extinguisher filling line |
| CN112811111A (en) * | 2021-01-20 | 2021-05-18 | 候若培 | Cement conveying equipment capable of preventing cement dust from raising based on quantitative conveying |
| CN213229163U (en) * | 2021-04-20 | 2021-05-18 | 莱阳市动物疫病预防与控制中心 | Vitamin premix feed packing dust pelletizing system |
| CN215524786U (en) * | 2021-06-23 | 2022-01-14 | 湖北科普达光电材料有限公司 | Automatic weighing device that carries of miropowder |
| CN217100531U (en) * | 2022-04-20 | 2022-08-02 | 宜昌新洋丰肥业有限公司 | Unloading dust removal recovery system of building gesso ton package balance |
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