CN108190522B - Prevent superfine powder dynamic measurement feeding system of raise dust - Google Patents
Prevent superfine powder dynamic measurement feeding system of raise dust Download PDFInfo
- Publication number
- CN108190522B CN108190522B CN201810026041.6A CN201810026041A CN108190522B CN 108190522 B CN108190522 B CN 108190522B CN 201810026041 A CN201810026041 A CN 201810026041A CN 108190522 B CN108190522 B CN 108190522B
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- metering
- negative pressure
- dust
- bin
- bearing
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- 239000000843 powder Substances 0.000 title claims abstract description 50
- 239000000428 dust Substances 0.000 title claims abstract description 37
- 238000005259 measurement Methods 0.000 title description 10
- 238000005303 weighing Methods 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000005484 gravity Effects 0.000 description 3
- 230000004584 weight gain Effects 0.000 description 3
- 235000019786 weight gain Nutrition 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
-
- 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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
Abstract
The invention provides an anti-dust ultrafine powder dynamic metering and feeding system, which comprises a feeding station, a conveying and metering mechanism and a negative pressure power mechanism which are communicated with each other; the conveying and metering mechanism comprises a bracket, a first weighing module and a second weighing module are respectively arranged on the upper part and the lower part of the bracket, a bearing and transferring structure is fixed on the weighing part of the first weighing module, and a weight increasing metering bin is fixed on the weighing part of the second weighing module; the negative pressure power mechanism comprises a vacuum conveyor, a negative pressure storage tank, a filtering sealing tank and a negative pressure source which are communicated end to end, wherein the bottom of the negative pressure storage tank is communicated with a dust collection box, and a dust filter is arranged in the filtering sealing tank; the top of the feeding station is communicated with an air pressure balance pipeline which is respectively communicated with the bearing and transferring structure, the weight-increasing metering bin and the dust box. The invention can effectively prevent environmental pollution caused by superfine powder spraying, has high safety performance and long service life of the whole system, and can realize reliable high-precision dynamic metering.
Description
Technical Field
The invention relates to a superfine powder feeding system, and particularly discloses an anti-dust superfine powder dynamic metering feeding system.
Background
Ultrafine powder refers to particles with the diameter smaller than 10 mu m and the density smaller than 1g/ml, and is widely applied to the fields of chemical industry, plastics, new energy, new materials, pharmacy, food, cosmetics and the like. Because the volume and weight of the single ultrafine powder material are very small, dust emission easily occurs in the transportation process, and the density difference of different ultrafine powder materials is large, so that the metering is usually carried out according to the weight in the use process. The superfine powder is one of powdery materials, and the prior art does not have a special feeding system designed for the superfine powder.
The existing feeding system of the powdery material is generally provided with a sealed feeding station, a feeding bin, a metering screw and a receiving bin, the powdery material in the feeding bin enters the metering screw under the action of positive pressure and gravity, the metering screw conveys the powdery material into the receiving bin, because the existing feeding system has positive pressure, the feeding station can generate serious dust in the process of feeding into the feeding bin, the metering screw can also generate serious powder spraying in the process of conveying into the receiving bin, the powdery material is sprayed out of the external environment, the air quality is seriously influenced, the normal operation of devices in the environment is not facilitated, the material is wasted, and the powdery material is matched with a positive pressure power system to have explosion safety hazards; in addition, the weighing of the existing feeding system is only completed by the metering screw through flow calculation, the accuracy is low, dust can seriously influence the amount of powdery material actually reaching the receiving bin, and the metering reliability is low.
Particularly ultra-fine powder materials with very small volume and weight, the problems existing in the prior feeding system are more serious.
Disclosure of Invention
Based on the above, it is necessary to provide a dust-proof superfine powder dynamic metering and feeding system aiming at the prior art, which can effectively prevent superfine powder spraying, has high safety performance, saves materials and can realize reliable high-precision metering.
In order to solve the problems in the prior art, the invention discloses an anti-dust ultrafine powder dynamic metering and feeding system which comprises a feeding station, a conveying and metering mechanism and a negative pressure power mechanism which are communicated with each other, wherein the feeding station is electrically connected with a master controller, the master controller is electrically connected with a metering controller and a negative pressure controller, the metering controller is electrically connected with the conveying and metering mechanism, and the negative pressure controller is electrically connected with the negative pressure power mechanism;
The conveying and metering mechanism comprises a bracket, a first weighing module and a second weighing module are respectively arranged on the upper part and the lower part of the bracket, a bearing and transferring structure is fixed on the weighing part of the first weighing module, a weight increasing metering bin is fixed on the weighing part of the second weighing module, the output end of the feeding station is connected with the input end of the bearing and transferring structure, the output end of the bearing and transferring structure is connected with the input end of the weight increasing metering bin, and the output end of the weight increasing metering bin is connected with a discharging pipe;
the negative pressure power mechanism comprises a vacuum conveyor, a negative pressure storage tank, a filtering sealing tank and a negative pressure source which are communicated end to end, the output end of the vacuum conveyor is connected with a bearing and transferring structure, the bottom of the negative pressure storage tank is communicated with a dust collection box, and a dust filter is arranged in the filtering sealing tank;
The top of the feeding station is communicated with an air pressure balance pipeline which is respectively communicated with the bearing and transferring structure, the weight-increasing metering bin and the dust box.
Further, bear and transport the structure and include weightlessness measurement storehouse and measurement screw rod, the output in weightlessness measurement storehouse is connected with the input of measurement screw rod, and the input in weightlessness measurement storehouse is the input of bearing and transporting the structure, and the output of measurement screw rod is the output of bearing and transporting the structure.
Further, a first stirring structure is arranged in the weightlessness measurement bin.
Further, a second stirring structure is arranged in the weight increasing metering bin.
Further, the output end of the metering screw rod is connected with the input end of the weight increasing metering bin through a hose, and the joints of the metering screw rod and the weight increasing metering bin with the hose are respectively provided with a leakage-proof valve.
Further, the negative pressure storage tank is provided with a negative pressure meter.
Further, a first valve is arranged between the vacuum conveyor and the negative pressure storage tank, and the filtering sealing tank is connected with a back blowing device.
Further, a second valve is arranged at the joint of the air pressure balance pipeline and the bearing and transferring structure.
Further, a third valve is arranged at the joint of the air pressure balance pipeline and the weight increasing measuring bin.
The beneficial effects of the invention are as follows: the invention discloses a dust-proof ultrafine powder dynamic metering and feeding system, which adopts negative pressure and gravity to realize transportation, designs a reliable air pressure balance structure, can effectively prevent environmental pollution caused by ultrafine powder spraying, prevents health of workers in the environment from being influenced, ensures service lives of various devices in the environment, has high safety performance, saves materials, has long overall service life, can prevent the total amount of ultrafine powder actually metered from being influenced by powder spraying, and can realize reliable high-precision dynamic metering by matching with a special metering mechanism.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numerals are: the system comprises a feeding station 10, a master controller 11, a metering controller 12, a negative pressure controller 13, a bracket 20, a first weighing module 201, a second weighing module 202, a bearing and transferring structure 21, a weightless metering bin 211, a metering screw 212, a first stirring structure 213, a weighting metering bin 22, a second stirring structure 221, a hose 222, a discharging pipe 23, a vacuum conveyor 30, a negative pressure storage tank 31, a negative pressure meter 312, a first valve 313, a filtering sealing tank 32, a dust filter 321, a back blowing device 322, a negative pressure source 33, a dust box 34, an air pressure balancing pipeline 40, a second valve 401 and a third valve 402.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Reference is made to fig. 1.
The invention discloses a dust-proof ultrafine powder dynamic metering and feeding system, which is provided with a sealed metering and feeding space, and comprises a feeding station 10, a conveying and metering mechanism and a negative pressure power mechanism which are communicated with each other, wherein the feeding station 10 is electrically connected with a master controller 11, the master controller 11 is electrically connected with a metering controller 12 and a negative pressure controller 13, the metering controller 12 is electrically connected with the conveying and metering mechanism, and the negative pressure controller 13 is electrically connected with the negative pressure power mechanism;
The conveying and metering mechanism comprises a bracket 20, a first weighing module 201 and a second weighing module 202 are respectively arranged on the upper side and the lower side of the bracket 20, a bearing and transferring structure 21 is fixed on the weighing part of the first weighing module 201, a weight increasing and metering bin 22 is fixed on the weighing part of the second weighing module 202, the output end of the feeding station 10 is connected with the input end of the bearing and transferring structure 21, the output end of the bearing and transferring structure 21 is connected with the input end of the weight increasing and metering bin 22, and the output end of the weight increasing and metering bin 22 is connected with a discharging pipe 23;
The negative pressure power mechanism comprises a vacuum conveyor 30, a negative pressure storage tank 31, a filtering seal tank 32 and a negative pressure source 33 which are communicated end to end, namely, the input end of the vacuum conveyor 30 is connected with the output end of the negative pressure storage tank 31, the input end of the negative pressure storage tank 31 is connected with the output end of the filtering seal tank 32, the input end of the filtering seal tank 32 is connected with the output end of the negative pressure source 33, the output end of the vacuum conveyor 30 is connected with a bearing and transferring structure 21, the bottom of the negative pressure storage tank 31 is communicated with a dust box 34, and a dust filter 321 is arranged in the filtering seal tank 32;
The top of the feeding station 10 is communicated with an air pressure balance pipeline 40, the air pressure balance pipeline 40 is respectively communicated with the bearing and transferring structure 21, the weight increasing measuring bin 22 and the dust box 34, and preferably, an air pressure balance valve for switching on and switching off is arranged in the air pressure balance pipeline 40.
The operation process of the invention is as follows: the negative pressure source 33 works, and negative pressure power is transmitted to the bearing and transferring structure 21 and the weight increasing metering bin 22 through the filtering sealing tank 32 and the negative pressure storage tank 31, so that the feeding system has a negative pressure internal environment; the superfine powder in the feeding station 10 enters the bearing and transferring structure 21, enters the weight-increasing metering bin 22 and is output through the discharging pipe 23, the first weighing module 201 and the second weighing module 202 respectively measure the weight of the bearing and transferring structure 21 and the weight-increasing metering bin 22, and the transferring speed of the bearing and transferring structure 21 is adjusted according to the reading change of the first weighing module 201 and the second weighing module 202, so that the output flow of the discharging pipe 23 can be effectively ensured to be matched with the requirement of the next process connected with the output flow of the discharging pipe 23, and the metering is reliable and accurate; because the volume and the weight of the single ultrafine powder are extremely small, a small amount of ultrafine powder enters the negative pressure power mechanism in the process of providing negative pressure power for the conveying and metering mechanism by the negative pressure power mechanism, the dust filter 321 can effectively filter the ultrafine powder, prevent the ultrafine powder from entering the negative pressure source 33, and the filtered ultrafine powder is stored in the dust box 34, so that the utilization rate of the ultrafine powder can be improved; the internal air pressure of the feeding station 10 is continuously reduced due to the output of the ultrafine powder, the internal air pressure of the bearing and transferring structure 21 is continuously changed in the process of transferring and regulating the ultrafine powder, the internal air pressure of the weight increasing metering bin 22 is continuously increased when the ultrafine powder is received, the internal air pressure of the dust box 34 is continuously increased when the filtered ultrafine powder is continuously collected, and the air pressure balancing pipeline 40 can organically balance the air pressure among the feeding station 10, the bearing and transferring structure 21, the weight increasing metering bin 22 and the dust box 34, so that smooth and reliable feeding action of the invention is ensured, and dust emission can be effectively prevented.
The invention adopts negative pressure and gravity to realize transportation, designs a reliable air pressure balance structure, can effectively prevent environmental pollution caused by superfine powder spraying, prevents the health of workers in the environment from being influenced, ensures the service life of various devices in the environment, has high safety performance, saves materials, has long service life of the whole system, can prevent the total amount of superfine powder actually measured from being influenced by powder spraying, and can realize reliable high-precision dynamic measurement by matching with a special metering mechanism.
In this embodiment, the carrying and transferring structure 21 includes a weightless metering bin 211 and a metering screw 212, the output end of the weightless metering bin 211 is connected with the input end of the metering screw 212, the input end of the weightless metering bin 211 is the input end of the carrying and transferring structure 21, the output end of the metering screw 212 is the output end of the carrying and transferring structure 21, the weightless metering bin 211 is mainly used for carrying superfine powder, the metering screw 212 is used for transferring superfine powder, and meanwhile, the metering screw 212 can also control the transferring speed of the superfine powder.
In order to further improve the smoothness of the conveying of the superfine powder in the feeding system of the present invention, in this embodiment, the weight loss metering bin 211 is provided with a first stirring structure 213, preferably, the first stirring structure 213 is a stirring paddle connected with a power source, and the first stirring structure 213 prevents the superfine powder in the weight loss metering bin 211 from being blocked by stirring.
In this embodiment, the weight gain metering bin 22 is provided with a second stirring structure 221, preferably, the second stirring structure 221 is a stirring paddle connected with a power source, and the second stirring structure 221 prevents blockage by stirring the ultrafine powder in the weight gain metering bin 22.
In this embodiment, the output end of the metering screw 212 is connected with the input end of the weight increasing metering bin 22 through a hose 222, and the connection positions of the metering screw 212 and the weight increasing metering bin 22 with the hose 222 are respectively provided with a leakage-proof valve. When the hose 222 falls off, the two leakproof valves are closed timely, so that dust can be effectively prevented from occurring in the metering screw 212 and the weight-increasing metering bin 22.
In order to further improve the safety performance of the feeding system of the present invention, in this embodiment, the negative pressure storage tank 31 is provided with a negative pressure meter 312, and the air pressure in the negative pressure storage tank 31 is monitored by the negative pressure meter 312, so as to prevent the air pressure of each part in the feeding system of the present invention from suddenly changing, thereby improving the safety.
In order to improve the service life of the feeding system of the present invention, in this embodiment, a first valve 313 is disposed between the vacuum conveyor 30 and the negative pressure storage tank 31, and the filter seal tank 32 is connected to a blowback device 322. When the feeding system is not in use, the negative pressure source 33 stops working, the first valve 313 is closed, the back blowing device 322 blows air to the filtering sealing tank 32, and the superfine powder accumulated in the dust filter 321 reaches the dust box 34, so that the dust filter 321 is prevented from being blocked due to excessive accumulation of the superfine powder.
In this embodiment, the connection between the air pressure balance pipe 40 and the load carrying and transporting structure 21 is provided with a second valve 401, and preferably, the connection between the air pressure balance pipe 40 and the weight gain measuring bin 22 is provided with a third valve 221.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. The anti-dust ultrafine powder dynamic metering feeding system is characterized by comprising a feeding station (10), a conveying metering mechanism and a negative pressure power mechanism which are communicated with each other, wherein the feeding station (10) is electrically connected with a master controller (11), the master controller (11) is electrically connected with a metering controller (12) and a negative pressure controller (13), the metering controller (12) is electrically connected with the conveying metering mechanism, and the negative pressure controller (13) is electrically connected with the negative pressure power mechanism;
The conveying metering mechanism comprises a support (20), a first weighing module (201) and a second weighing module (202) are respectively arranged on the upper portion and the lower portion of the support (20), a bearing and transferring structure (21) is fixed on the weighing portion of the first weighing module (201), a weight-increasing metering bin (22) is fixed on the weighing portion of the second weighing module (202), the output end of the feeding station (10) is connected with the input end of the bearing and transferring structure (21), the output end of the bearing and transferring structure (21) is connected with the input end of the weight-increasing metering bin (22), and the output end of the weight-increasing metering bin (22) is connected with a discharging pipe (23);
The negative pressure power mechanism comprises a vacuum conveyor (30), a negative pressure storage tank (31), a filtering sealing tank (32) and a negative pressure source (33) which are communicated end to end, wherein the output end of the vacuum conveyor (30) is connected with the bearing and transferring structure (21), the bottom of the negative pressure storage tank (31) is communicated with a dust collecting box (34), and a dust filter (321) is arranged in the filtering sealing tank (32);
The top of the feeding station (10) is communicated with an air pressure balance pipeline (40), and the air pressure balance pipeline (40) is communicated with the bearing and transferring structure (21), the weight-increasing metering bin (22) and the dust box (34) respectively;
The bearing and transferring structure (21) comprises a weightless metering bin (211) and a metering screw (212), wherein the output end of the weightless metering bin (211) is connected with the input end of the metering screw (212), the input end of the weightless metering bin (211) is the input end of the bearing and transferring structure (21), and the output end of the metering screw (212) is the output end of the bearing and transferring structure (21);
A second stirring structure (221) is arranged in the weight increasing metering bin (22).
2. The anti-dust ultrafine powder dynamic metering and feeding system according to claim 1, wherein a first stirring structure (213) is arranged in the weightless metering bin (211).
3. The anti-dust ultrafine powder dynamic metering and feeding system according to claim 1, wherein the output end of the metering screw (212) is connected with the input end of the weight increasing metering bin (22) through a hose (222), and the joints of the metering screw (212) and the weight increasing metering bin (22) and the hose (222) are respectively provided with a leakage-proof valve.
4. The dust-proof ultrafine powder dynamic metering and feeding system according to claim 1, wherein the negative pressure storage tank (31) is provided with a negative pressure meter (312).
5. The anti-dust ultrafine powder dynamic metering and feeding system according to claim 1, wherein a first valve (313) is arranged between the vacuum conveyor (30) and the negative pressure storage tank (31), and the filtering and sealing tank (32) is connected with a back blowing device (322).
6. The anti-dust ultrafine powder dynamic metering and feeding system according to claim 1, wherein a second valve (401) is arranged at the joint of the air pressure balance pipeline (40) and the bearing and transferring structure (21).
7. The anti-dust ultrafine powder dynamic metering and feeding system according to claim 1 or 6, wherein a third valve (221) is arranged at the joint of the air pressure balance pipeline (40) and the weight increasing metering bin (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026041.6A CN108190522B (en) | 2018-01-11 | 2018-01-11 | Prevent superfine powder dynamic measurement feeding system of raise dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810026041.6A CN108190522B (en) | 2018-01-11 | 2018-01-11 | Prevent superfine powder dynamic measurement feeding system of raise dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108190522A CN108190522A (en) | 2018-06-22 |
| CN108190522B true CN108190522B (en) | 2024-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810026041.6A Active CN108190522B (en) | 2018-01-11 | 2018-01-11 | Prevent superfine powder dynamic measurement feeding system of raise dust |
Country Status (1)
| Country | Link |
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| CN (1) | CN108190522B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115231319B (en) * | 2022-08-02 | 2023-11-24 | 湖北省兴发磷化工研究院有限公司 | Environment-friendly conveying equipment for pneumatic conveying negative-pressure dust extraction of superfine powder and conveying method thereof |
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| JPH07126719A (en) * | 1993-10-27 | 1995-05-16 | Kawasaki Steel Corp | Method for controlling blowing quantity of pulverized material |
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| CN204702237U (en) * | 2015-05-12 | 2015-10-14 | 深圳市海中辉油墨制品有限公司 | A kind of powder automatic discharge apparatus |
| CN105270654A (en) * | 2014-07-24 | 2016-01-27 | 宜兴市光辉胶粘剂有限公司 | Automatic weighing and packaging system for hot melt colloidal particles |
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| CN207957112U (en) * | 2018-01-11 | 2018-10-12 | 广东海中新能源设备股份有限公司 | A kind of superfine powder dynamic measuring feeding system of anti-airborne dust |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2535821C1 (en) * | 2013-10-31 | 2014-12-20 | Закрытое Акционерное Общество "Твин Трейдинг Компани" | Air vacuum device for transfer of loose materials with high weight concentration |
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2018
- 2018-01-11 CN CN201810026041.6A patent/CN108190522B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07126719A (en) * | 1993-10-27 | 1995-05-16 | Kawasaki Steel Corp | Method for controlling blowing quantity of pulverized material |
| CN102390729A (en) * | 2011-07-26 | 2012-03-28 | 徐州衡器厂有限公司 | Weightlessness feeding system |
| CN105270654A (en) * | 2014-07-24 | 2016-01-27 | 宜兴市光辉胶粘剂有限公司 | Automatic weighing and packaging system for hot melt colloidal particles |
| CN204702237U (en) * | 2015-05-12 | 2015-10-14 | 深圳市海中辉油墨制品有限公司 | A kind of powder automatic discharge apparatus |
| CN205651516U (en) * | 2016-05-20 | 2016-10-19 | 山东中岩建材科技有限公司 | Dry powder mortar automated production manufacturing equipment |
| CN106829518A (en) * | 2017-03-22 | 2017-06-13 | 东华工程科技股份有限公司 | A kind of anti-moisture absorption, dustless, accurate feed hopper system |
| CN207957112U (en) * | 2018-01-11 | 2018-10-12 | 广东海中新能源设备股份有限公司 | A kind of superfine powder dynamic measuring feeding system of anti-airborne dust |
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| CN108190522A (en) | 2018-06-22 |
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