CN112079149A - Recovery device and method for feeding system and feeding system - Google Patents
Recovery device and method for feeding system and feeding system Download PDFInfo
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- CN112079149A CN112079149A CN201910504820.7A CN201910504820A CN112079149A CN 112079149 A CN112079149 A CN 112079149A CN 201910504820 A CN201910504820 A CN 201910504820A CN 112079149 A CN112079149 A CN 112079149A
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- air
- dust
- powder
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- blanking
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- 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
- B65G69/182—Preventing escape of dust by means of sealed systems with aspiration means
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Methods And Devices For Loading And Unloading (AREA)
Abstract
The embodiment of the invention provides a recovery device and method for a feeding system and the feeding system, and belongs to the field of chemical production. Utilize the cover to establish the escape dust of dust cage entrapment powder of the blanking outside of pipe of throwing the material system, wherein, there are a plurality of holes that induced draft in the inside surface of dust cage, then make the powder escape dust fall into the blanking funnel of throwing the material system through the dust remover, the problem of escape dust entrapment and cyclic recovery utilization when having solved solid powder and throwing the material has both increased economic benefits, has reduced operating personnel dust exposure level again, alleviates the occupational health harm that the dust caused to operating personnel.
Description
Technical Field
The invention relates to the field of chemical production, in particular to a recycling device and method for a feeding system and the feeding system.
Background
At present, the automation level of powder feeding operation in the chemical industry is not high, an operation post for manual feeding is ubiquitous, and the instantaneous reverse dusting of dust concentration in the solid powder feeding process is large, so that the method is a key link for rectifying and modifying the hidden danger that the dust concentration exceeds the standard. At present, the side-suction type local exhaust hood is adopted to absorb the material escaping dust on site, and the material market value of part of the reaction kettle is higher, so that the material sucked by the side-suction type local exhaust hood cannot be reused, resource waste is caused, and the product cost is increased.
Disclosure of Invention
The embodiment of the invention aims to provide a recovery device and a recovery method for a feeding system and the feeding system.
In order to achieve the above object, an embodiment of the present invention provides a recycling device for a feeding system, where the feeding system includes: the blanking device comprises a blanking pipe and a blanking funnel positioned below the blanking pipe; the device comprises: a dust trap unit comprising: the dust hood is sleeved outside the blanking pipe, and a plurality of air suction holes are formed in the surface of the inner side of the dust hood and used for collecting escape dust of the powder; a purification unit comprising: and the dust remover is used for enabling the dust escape of the powder to fall into the blanking hopper.
Optionally, the purification unit further comprises: the air pipe is connected between the dust hood and the dust remover, and the collected dust escape of the powder flows to the dust remover through the air pipe; the fan is connected with the dust remover, and the air volume adjusting valve is arranged in the air duct and is used for controlling the fan and the air volume adjusting valve to adjust the air speed of the air sucked in the process of collecting the powder through the plurality of air suction holes.
Optionally, the areas and the intervals of the plurality of air suction holes are set so that the air speed of the sucked air is within a preset air speed range, and the air speed deviation of the sucked air between one air suction hole, which is closest to the air pipe, of the plurality of air suction holes and one air suction hole, which is farthest from the air pipe, of the plurality of air suction holes does not exceed the air speed deviation threshold.
Optionally, the wind speed deviation threshold is 20%.
Optionally, the wind speed deviation Δ v is calculated by the following formula:
wherein v is1The wind speed of the air suction hole is the nearest air suction hole to the air pipe2The wind speed of the air suction hole farthest from the air pipe is shown, and delta v is the wind speed deviation.
Optionally, the preset wind speed range is 0.3m/s-0.5 m/s.
Optionally, as the distance from the air duct increases, the area of the plurality of air suction holes decreases.
Optionally, as the distance from the air duct increases, the distance between the plurality of air suction holes decreases.
Optionally, the dust hood is an annular dust hood.
Correspondingly, the embodiment of the invention also provides a feeding system, which comprises the recovery device for the feeding system.
Optionally, the system further includes: the feeding leakage cylinder is used for accommodating the powder to be fed; and the rapping device is arranged in the feeding funnel and is used for beating and extruding the ton bag filled with the powder.
Accordingly, embodiments of the present invention also provide a recycling method for a feeding system, the method being implemented according to the above-mentioned recycling device for a feeding system, the method further including: and if the resistance in the dust remover reaches a resistance threshold value, blowing the escaping dust of the powder into the blanking hopper by the dust remover.
According to the technical scheme, the dust absorption cover sleeved outside the blanking pipe of the feeding system is used for collecting the escape dust of the powder, the inner side surface of the dust absorption cover is provided with the plurality of air suction holes, and then the dust remover is used for enabling the escape dust of the powder to fall into the blanking hopper of the feeding system so as to achieve the recovery of the powder.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a schematic diagram of a recycling device for a feeding system according to an embodiment of the present invention.
Fig. 2 is a schematic view of an annular dust hood according to an embodiment of the present invention.
Fig. 3 is a schematic view of an inner side structure of the annular dust hood according to an embodiment of the present invention.
Description of the reference numerals
1 clean gas outlet 2 fan 3 dust remover
4 air volume adjusting valve 5 feeding leakage cylinder 6 rapping device
7 blanking pipe 8 blanking funnel 9 dust hood
10 reaction kettle pipeline 11 air pipe
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The recovery device is used for a feeding system, and the feeding system comprises: the blanking hopper is positioned below the blanking pipe; the recovery device comprises: a dust trap unit comprising: the dust hood is sleeved outside the blanking pipe, and a plurality of air suction holes are formed in the surface of the inner side of the dust hood and used for collecting escape dust of powder; a purification unit comprising: and the dust remover is used for enabling the dust escaping of the powder to fall into the blanking hopper.
Specifically, the blanking funnel is positioned below the blanking pipe taking the vertical downward direction as a reference direction, and can be positioned at any position capable of receiving powder falling through the blanking pipe, and is not limited to be positioned right below the blanking pipe; the blanking pipe is a barrel-shaped object with a through hole in the middle, and the outer part of the blanking pipe refers to the outer surface of the blanking pipe; the dust hood can be of a box-type structure, a hole capable of being sleeved with the blanking pipe is formed in the center of the dust hood, and the surface of the inner side of the dust hood is the inner surface of the hole opposite to the outer surface of the blanking pipe.
The dust hood is not tightly sleeved outside the blanking pipe, but has a certain space allowance with the blanking pipe, when powder falls into the blanking hopper through the blanking pipe, the dust leakage can be generated below the blanking pipe in a reverse flapping mode, and at the moment, the dust leakage which floats upwards in a reverse flapping mode to the allowance space between the blanking pipe and the dust hood can be collected through the dust hood.
The dust remover can comprise a filter element inside, the dust escaping from the powder sucked through the suction hole of the dust hood enters the dust remover and then is attached to the filter element, and the dust escaping from the powder can fall into the blanking funnel through the back blowing filter element.
According to the embodiment of the invention, the dust escape of the powder is captured by the dust hood sleeved outside the blanking pipe of the feeding system, wherein the inner side surface of the dust hood is provided with the plurality of air suction holes, and then the powder escape falls into the blanking funnel of the feeding system through the dust remover, so that the problems of dust escape capture and cyclic recycling during solid powder feeding are solved, the economic benefit is increased, the dust exposure level of operators is reduced, and the occupational health damage of the dust to the operators is reduced.
Fig. 1 is a schematic diagram of a recycling device for a feeding system according to an embodiment of the present invention, wherein the recycling device comprises: the dust collecting unit comprises a dust hood 9, the dust hood 9 is sleeved outside the blanking pipe 7 of the feeding system, and a plurality of air suction holes are formed in the surface of the inner side of the dust hood 9 and used for collecting escape dust of powder; and a purification unit comprising: the dust remover 3 is used for leading the dust escape of the powder to fall into a blanking funnel 8 below the blanking pipe 7.
Specifically, the blanking funnel 8 is located below the blanking pipe 7 with the vertical downward direction as the reference direction, and can be located at any position capable of receiving the powder falling through the blanking pipe 7, and is not limited to being directly below the blanking pipe 7. It can be understood that the closer the blanking pipe 7 is to the edge of the blanking funnel 8, the less the generated dust escapes, but the powder is easy to adhere and accumulate, and the powder is difficult to flow into the reaction kettle pipeline 10, so the positions of the blanking pipe 7 and the blanking funnel 8 can be set according to the self characteristics of the powder. The blanking pipe 7 is a barrel-shaped object with a through hole in the middle, and the outer part of the blanking pipe 7 refers to the outer surface of the blanking pipe 7; as shown in fig. 2, the dust hood 9 may be a box-type structure, the box body has a hole at the center thereof for receiving the material pipe 7, the upper and lower surfaces of the box body are sealed, and the inner surface of the dust hood 9 is the inner surface of the hole opposite to the outer surface of the material pipe 7.
The dust hood 9 is not tightly sleeved outside the blanking pipe 7, but has a certain space allowance with the blanking pipe 7, when powder falls into the blanking funnel 8 through the blanking pipe 7, the powder generates reverse dust escaping under the blanking pipe 7, and at the moment, the dust hood 9 can collect the dust escaping from the reverse dust floating up to the allowance space between the blanking pipe 7 and the dust hood 9.
The central hole of the dust hood 9 may be in accordance with the profile of the blanking pipe 7, for example, if the profile of the blanking pipe 7 is cylindrical, the dust hood 9 may be an annular dust hood 9, i.e. the central hole of the dust hood 9 is also cylindrical. The size of the hole in the center of the dust hood 9 can be set according to specific conditions, so that the plurality of air suction holes of the dust hood 9 can suck the escaping dust in the allowance space between the dust hood 9 and the blanking pipe 7 as much as possible within a preset air speed range.
The purification unit may further include: the air pipe 11 is connected between the dust hood 9 and the dust remover 3, and the captured dust of the powder flows to the dust remover 3 through the air pipe 11; the fan 2 is connected with the dust remover 3, and the air volume adjusting valve 4 is arranged in the air pipe 11, and the air speed of air sucked when the powder is collected by the plurality of air suction holes is adjusted by controlling the fan 2 and the air volume adjusting valve 4.
Specifically, before the material is fed, the valve of the air volume adjusting valve 4 is in a full open position, that is, the air in the air duct 11 is in a complete conduction state. When feeding, the operating personnel start the fan 2 and the dust remover 3 through the switch board, control the fan frequency simultaneously for the fan 2 works with certain wind speed that induced drafts, then adjusts air regulation valve 4's valve, makes the inspiratory wind speed of a plurality of holes of induced drafting of suction hood 9 in predetermineeing the wind speed within range.
In the current production process, enterprises also carry out the elimination and the rectification of occupational health hidden dangers, adopt corresponding rectification measures, but do not obtain the expected effect, and the existing problems or technical difficulties are mainly that the side-suction type local exhaust hood adopted on site has poor trapping effect, and the air draft can not be effectively controlled, so that on one hand, a large amount of materials can be sucked away due to too large air draft, and the feeding error is increased; on the other hand, the air pumping quantity is too small, far-end escaping dust cannot be effectively collected, and the dust concentration in the operation environment exceeds the standard, so that the occupational disease risk of operation workers is increased.
It can be understood that the invention can roughly adjust the wind speed of the wind sucked by a plurality of air suction holes by controlling the frequency of the fan, and can finely adjust the wind speed of the wind sucked by a plurality of air suction holes by adjusting the air quantity adjusting valve 4, thereby solving the problem of poor trapping effect caused by the failure of effective control of air draft in the prior art.
The areas and the intervals of the plurality of air suction holes are set to ensure that the air speed deviation of the sucked air between one air suction hole which is closest to the air pipe 11 and one air suction hole which is farthest from the air pipe 11 in the plurality of air suction holes in a preset air speed range does not exceed the air speed deviation threshold value. Wherein the preset wind speed range is 0.3m/s-0.5 m/s.
Because the air outlet of the dust hood 9, that is, the air inlet of the air pipe 11 is arranged at one side of the dust hood 9, the air speeds of the air sucked by the air suction holes with different distances from the air pipe 11 are also different, and in addition, it can be understood that the air speeds of the air sucked by the air suction holes are also different due to the different areas of the air suction holes. Therefore, in order to ensure that the dust hood 9 can effectively absorb powder dust escape in each direction, the wind speed of the wind sucked by the dust hood 9 in each direction should be uniform, and therefore, the wind speed deviation between the wind sucked by each air suction hole in each direction within the preset wind speed range does not exceed the wind speed deviation threshold value, wherein the wind speed deviation threshold value can be 20%.
It can be understood that, as the distance from the air duct 11 increases, under the condition that the areas of the air suction holes are the same or uniformly changed, the difference between the wind speeds of the sucked wind between the air suction hole closest to the air duct 11 and the air suction hole farthest from the air duct 11 among the air suction holes is the largest, and as a preferred embodiment, it can be verified whether the areas and the intervals of the air suction holes meet the requirements or not by directly calculating the wind speed deviation of the sucked wind between the air suction hole closest to the air duct 11 and the air suction hole farthest from the air duct 11.
Specifically, the wind speed deviation Δ v can be calculated by the following formula:
wherein v is1The wind speed of the air suction hole is the nearest air suction hole to the air pipe2The wind speed of the air suction hole farthest from the air pipe is shown, and delta v is the wind speed deviation.
As a preferred embodiment, the suction hood may be designed by sequentially decreasing the area of the suction holes or decreasing the distance between the suction holes as the distance from the air duct 11 increases, or naturally, the suction hood may be designed by combining the two methods to obtain a suction hood meeting the requirements. The spacing between the suction openings of the suction hood can be set, for example, according to fig. 3, i.e. in the case of a gradual change in the distance from the air duct 11, the spacing between the suction openings also changes gradually.
When the dust hood 9 is symmetrical on the vertical plane where the axis of the air duct 11 is located, the sizes and positions of the air suction holes distributed on the inner surface of the hole of the dust hood 9 can also be symmetrical on the vertical plane where the axis of the air duct 11 is located.
The dust escaping from the powder collected by the suction hole of the dust hood 9 flows to the dust remover 3 through the air pipe 11 and is treated by the dust remover 3. The dust remover 3 can internally comprise a filter element, a compressed air blowing system and a pulse back-blowing controller which are sequentially connected, dust escaping from powder sucked through an air suction hole of the dust hood 9 enters the dust remover 3 and then is attached to the filter element, air filtered by the dust remover 3 is discharged through a clean air outlet 1 of the fan 2, and then the dust escaping from the powder can fall into the blanking hopper 8 through the back-blowing filter element. Specifically, 3 accessible switch boards of dust remover are electrified, show when inside air resistance reaches the resistance threshold value at dust remover 3, indicate that 3 inside filter element of dust remover adheres to the dust saturation, and the pulse blowback controller control compressed air reverse blowing system blowback filter element who is connected with the switch board this moment carries out the deashing for the powder ease dirt that adheres to on filter element falls into blanking funnel 8. The specific working principle of the dust remover 3 in the embodiment is similar to that of the existing dust remover, and is not described in detail herein.
Based on the recovery device for the feeding system in the embodiment, the recovery device for the feeding system in the embodiment of the invention also reasonably sets the area and distribution of the air suction holes of the dust hood, so that the air speed deviation between the air sucked by each air suction hole in each direction does not exceed the air speed deviation threshold value, the whole dust collection effect is ensured, meanwhile, the air speed of the air sucked by each air suction hole in each direction can be within the preset air speed range by adjusting the fan frequency and the air quantity adjusting valve 4, so that the dust on the powder impact backflushing funnel can be effectively absorbed by the dust hood, the exposure level of the dust at an operation post is reduced, the powder escaping dust can enter the blanking funnel again by reverse blowing, and then fall into a reaction kettle, the cyclic recovery of the powder is realized, and the recovery device is environment-friendly and energy-saving.
The embodiment of the present invention further provides a feeding system, including the above recovery device for a feeding system, the system further includes: the feeding leakage cylinder 5 is used for containing the fed powder; and the rapping device 6 is arranged in the feeding funnel 5 and is used for beating and extruding the ton bag filled with the powder.
Specifically, the ton bag unpacking machine lifts the material bag to the feeding port of the feeding leakage barrel 5 through a forklift or an electric hoist, and presses the bag. After a discharge opening of a packaging bag is manually opened or the bag is automatically broken, a control cabinet is utilized to start a rapping device 6 to rap and extrude ton bags, and powder sequentially passes through a blanking pipe 7 and a blanking funnel 8 by virtue of gravity to enter a reaction kettle.
The feeding system can accelerate the blanking speed of powder by beating and extruding the ton bag through the rapping device 6, thereby reducing manual operation and improving the working efficiency.
The specific working principle and the beneficial effect of the feeding system according to the embodiment of the invention are similar to those of the recovery device for the feeding system according to the embodiment, and are not described herein again.
The embodiment of the invention also provides a recycling method for the feeding system, which is implemented according to the recycling device for the feeding system, wherein the method further comprises the following steps: if the resistance in the dust remover 3 reaches a resistance threshold value, the dust remover 3 blows the escape dust of the powder into the blanking hopper 8.
Specifically, the dust collector 3 may include a filter element therein, and the dust escaping from the powder sucked through the suction hole of the dust hood 9 enters the dust collector 3 and adheres to the filter element, and then the dust escaping from the powder falls into the blanking hopper 8 through the back-blowing filter element.
The specific working principle and the beneficial effect of the recovery method for the feeding system according to the embodiment of the invention are similar to those of the recovery device for the feeding system according to the embodiment, and are not repeated herein.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (12)
1. A recycling apparatus for use in a charging system, the charging system comprising:
the blanking device comprises a blanking pipe and a blanking funnel positioned below the blanking pipe; the device comprises:
a dust trap unit comprising:
the dust hood is sleeved outside the blanking pipe, and a plurality of air suction holes are formed in the surface of the inner side of the dust hood and used for collecting escape dust of the powder;
a purification unit comprising:
and the dust remover is used for enabling the dust escape of the powder to fall into the blanking hopper.
2. The apparatus of claim 1, wherein the purification unit further comprises:
the air pipe is connected between the dust hood and the dust remover, and the collected dust escape of the powder flows to the dust remover through the air pipe;
a fan connected with the dust collector, and
and the air volume regulating valve is arranged in the air pipe and is used for regulating the air speed of air sucked when the powder is collected by the plurality of air suction holes by controlling the fan and the air volume regulating valve.
3. The apparatus of claim 2,
the areas and the intervals of the plurality of air suction holes are set to ensure that the air speed of the sucked air is within a preset air speed range, and the air speed deviation of the sucked air between one air suction hole, which is closest to the air pipe, and one air suction hole, which is farthest from the air pipe, of the plurality of air suction holes is not more than the air speed deviation threshold value.
4. The apparatus of claim 3, wherein the wind speed deviation threshold is 20%.
5. The apparatus of claim 3, wherein the wind speed deviation Δ ν is calculated by:
wherein v is1The wind speed of the air suction hole is the nearest air suction hole to the air pipe2The wind speed of the air suction hole farthest from the air pipe is shown, and delta v is the wind speed deviation.
6. The apparatus of claim 3, wherein the predetermined wind speed range is 0.3m/s to 0.5 m/s.
7. The apparatus of claim 3, wherein the plurality of air aspiration holes decrease in area as the distance from the air duct increases.
8. The apparatus of claim 3, wherein the spacing between the plurality of air suction holes decreases as the distance from the air duct increases.
9. The apparatus of claim 1, wherein the suction hood is an annular suction hood.
10. A charging system comprising a recycling device for a charging system according to claims 1-9.
11. The system of claim 9, further comprising:
the feeding leakage cylinder is used for accommodating the powder to be fed;
and the rapping device is arranged in the feeding funnel and is used for beating and extruding the ton bag filled with the powder.
12. A recycling method for a charging system, characterized in that it is implemented according to the recycling device for charging systems of claims 1-8, said method further comprising:
and if the resistance in the dust remover reaches a resistance threshold value, blowing the escaping dust of the powder into the blanking hopper by the dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504820.7A CN112079149A (en) | 2019-06-12 | 2019-06-12 | Recovery device and method for feeding system and feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504820.7A CN112079149A (en) | 2019-06-12 | 2019-06-12 | Recovery device and method for feeding system and feeding system |
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| CN112079149A true CN112079149A (en) | 2020-12-15 |
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| CN201910504820.7A Pending CN112079149A (en) | 2019-06-12 | 2019-06-12 | Recovery device and method for feeding system and feeding system |
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| CH673960A5 (en) * | 1985-11-16 | 1990-04-30 | Schlafhorst & Co W | |
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| CN204219919U (en) * | 2014-08-24 | 2015-03-25 | 鲁兵 | Annular tuyere deduster delivered by powder |
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| CN108235652A (en) * | 2017-12-27 | 2018-06-29 | 青岛海尔空调电子有限公司 | For the heat management device and method of computer room |
| CN109525068A (en) * | 2018-12-07 | 2019-03-26 | 中车永济电机有限公司 | A kind of cooling structure balancing base inner wind pressure |
| CN208790762U (en) * | 2018-06-23 | 2019-04-26 | 德清县家乐舒生物科技有限公司 | Starch Production workshop, which feeds intake, locates dust collection and raw material recovery device |
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2019
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH673960A5 (en) * | 1985-11-16 | 1990-04-30 | Schlafhorst & Co W | |
| CN201632468U (en) * | 2009-12-03 | 2010-11-17 | 东华大学 | Device for controlling dust and purifying by blowing and sucking air current |
| CN203306238U (en) * | 2013-06-18 | 2013-11-27 | 海门容汇通用锂业有限公司 | Special dust collector for lithium carbonate packaging opening |
| CN204219919U (en) * | 2014-08-24 | 2015-03-25 | 鲁兵 | Annular tuyere deduster delivered by powder |
| CN107638747A (en) * | 2016-12-01 | 2018-01-30 | 中国石油化工股份有限公司 | Feed opening packs dust removal method |
| CN107036361A (en) * | 2017-03-09 | 2017-08-11 | 青岛海尔特种电冰柜有限公司 | The air-out component and horizontal refrigerator of horizontal refrigerator |
| CN108235652A (en) * | 2017-12-27 | 2018-06-29 | 青岛海尔空调电子有限公司 | For the heat management device and method of computer room |
| CN208790762U (en) * | 2018-06-23 | 2019-04-26 | 德清县家乐舒生物科技有限公司 | Starch Production workshop, which feeds intake, locates dust collection and raw material recovery device |
| CN109525068A (en) * | 2018-12-07 | 2019-03-26 | 中车永济电机有限公司 | A kind of cooling structure balancing base inner wind pressure |
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Application publication date: 20201215 |
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