CN110436223A - A kind of bulk cement Pneumatic transport shipment system - Google Patents
A kind of bulk cement Pneumatic transport shipment system Download PDFInfo
- Publication number
- CN110436223A CN110436223A CN201910744033.XA CN201910744033A CN110436223A CN 110436223 A CN110436223 A CN 110436223A CN 201910744033 A CN201910744033 A CN 201910744033A CN 110436223 A CN110436223 A CN 110436223A
- Authority
- CN
- China
- Prior art keywords
- cement
- storehouse
- bulk cement
- current stabilization
- pneumatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 96
- 230000003139 buffering effect Effects 0.000 claims abstract description 39
- 230000006641 stabilisation Effects 0.000 claims abstract description 39
- 238000011105 stabilization Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000012716 precipitator Substances 0.000 claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
-
- 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
- B65G53/36—Arrangements of containers
-
- 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
- B65G67/00—Loading or unloading vehicles
- B65G67/60—Loading or unloading ships
- B65G67/606—Loading or unloading ships using devices specially adapted for bulk 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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/18—Preventing escape of dust
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
A kind of bulk cement Pneumatic transport shipment system, including a cement storage cavern bottom storehouse blanking system, one end of the cement storage cavern bottom storehouse blanking system are connected to the bottom end of cement storage cavern, and the other end is connected to the top of the Pneumatic conveyer；The air compressor system is connected to by pipeline with the air inlet of a pressure stabilizing air accumulator, and the gas outlet of the pressure stabilizing air accumulator is connected to by pipeline with the air inlet of the Pneumatic conveyer；The Pneumatic conveyer corresponds to air inlet position equipped with discharge port, the feed inlet that the discharge port passes through conveyance conduit and the top in the buffering current stabilization storehouse, the discharge port of the bottom in the buffering current stabilization storehouse is connected to one end of bulk cement ship loader, the other end of the bulk cement ship loader and the reservoir of bulk cement to be subjected；The top in the buffering current stabilization storehouse is equipped with material-level detecting device, explosion-proof valve and dust-precipitator.The present invention has structure simple, the convenient advantage of flexible arrangement.
Description
Technical field
The present invention relates to a kind of bulk cement Pneumatic transport shipment systems.
Background technique
As country advocates bulk cement energetically, the use of bagged cement is reduced, economizes on resources to reach, save packaging
Expense, the purpose for reducing dust emission concentration, improving air quality.Simultaneously as logistics is more and more flourishing, Shipping amount is big,
Waterway transportation is at low cost, is the 20% of overland transport, and the 30% of railway transportation.More and more cement production enterprises pass through ship for cement
It is sold in transport to farther market.Since numerous cement production enterprises have a certain distance away from harbour, Belt Conveying is often used
Machine loads cement transportation to harbour onto ship.Belt conveyor belongs to open type conveying equipment, not can avoid during transportation
The generation of fugitive dust can make air quality be deteriorated so as to cause a large amount of dust by wind into air, and make surrounding plants,
Many dusts have been accumulated on crops blade.And a large amount of cement dust is easy by field worker suction body in air,
Harm is generated to the lung of worker.
Notification number discloses a kind of bulk cement air-transport system for the patent of invention of CN205169832 U, including low
Press screw-rod air compressor, compressed air pipe, air accumulator, check-valves, separator, bulk cement truck, cement pipe
Road and silo；The compressed air outlet of the low-pressure screw air compressor machine is connected by compressed air pipe and air accumulator air inlet
Logical, air accumulator gas outlet is connected to by compressed air pipe with check-valves one end, and the check-valves other end passes through compressed air pipe
It is connected to multiple air accumulator air inlets being arranged in parallel, the air accumulator gas outlet is separated from water device by compressed air pipe
One end connection, the separator other end are connected to by compressed air pipe with the compressed air inlet of bulk cement truck, are dissipated
The cement exit of dress cement transporter is connected to by cement transportation pipeline with silo feeding mouth.
Summary of the invention
To overcome the deficiencies in the prior art described above, it is an object of that present invention to provide a kind of bulk cement Pneumatic transport shipments
System.
In order to achieve the above objects and other related objects, present invention provide the technical scheme that a kind of bulk cement strength
Ship-loading system is conveyed, including cement storage cavern bottom storehouse blanking system, air compressor system, Pneumatic conveyer, conveyance conduit, buffering are surely
Flow storehouse, bulk cement ship loader；One end of the cement storage cavern bottom storehouse blanking system is connected to the bottom end of cement storage cavern, the other end
It is connected to the top of the Pneumatic conveyer；The air compressor system is connected by the air inlet of pipeline and a pressure stabilizing air accumulator
Logical, the gas outlet of the pressure stabilizing air accumulator is connected to by pipeline with the air inlet of the Pneumatic conveyer；The pneumatic conveying
Device corresponds to the charging that air inlet position passes through conveyance conduit and the top in the buffering current stabilization storehouse equipped with discharge port, the discharge port
Mouthful, the discharge port of the bottom in the buffering current stabilization storehouse is connected to one end of bulk cement ship loader, the bulk cement ship loader
The other end and bulk cement to be subjected reservoir；The top in the buffering current stabilization storehouse is equipped with material-level detecting device, explosion-proof
Valve and dust-precipitator.
Preferred technical solution are as follows: the top of the bulk cement ship loader is equipped with dust-precipitator.
Preferred technical solution are as follows: the Pneumatic conveyer includes one for accommodating the cylinder of cement, the bottom of the cylinder
Portion is equipped with feed inlet, which connect with the cement storage cavern bottom storehouse blanking system；The bottom end of the cylinder be equipped with into
Port, the corresponding other end are equipped with discharge port.
Preferred technical solution are as follows: the material in the buffering current stabilization storehouse is steel；The Pneumatic conveyer includes a use
In the cylinder for accommodating cement, the top of the cylinder is equipped with dust-precipitator and explosion-proof valve, and the side at the top of the cylinder is equipped with material position
Detection device.
Since above-mentioned technical proposal is used, the present invention has the advantage, that compared with prior art
1, dust-precipitator is arranged at the top in buffering current stabilization storehouse in the present invention, guarantees that buffering current stabilization storehouse will not generate fugitive dust.
2, explosion-proof valve is arranged in buffering current stabilization the top of the warehouse, guarantees that buffering current stabilization generates due to will not be excessively high or too low because of air pressure
Wharf explosion phenomenon.
3, material-level detecting device is arranged in buffering current stabilization storehouse upper side, guarantees that buffering current stabilization storehouse will not be due to material position be excessively high
It buys securities with all one's capital.
4, dust-precipitator, which is arranged in above bulk cement ship loader, guarantees not have fugitive dust during shipment.
5, the present invention has structure simple, and flexible arrangement is convenient, it can be achieved that bulk cement long-distance sand transport is loaded onto ship, and whole process exists
The advantages of duct type conveying, no fugitive dust, environmental protection, maintenance cost is low, small investment, may replace the shipment of other mechanical conveying equipments.
Detailed description of the invention
Fig. 1 schematic diagram of the present invention.
In the figures above, 1, dust-precipitator；2, cement storage cavern；3, cement storage cavern bottom storehouse blanking system；4, Pneumatic conveyer；
5, pressure stabilizing air accumulator；6, air compressor system；8, conveyance conduit；9, explosion-proof valve；11, current stabilization storehouse is buffered；12, bulk cement is loaded onto ship
Machine；14, environmentally friendly telescopic bulk head；15, container.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Please refer to Fig. 1.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The revealed content of specification is not intended to limit the invention enforceable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, In
It does not influence still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach
It obtains in the range of capable of covering.Meanwhile cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term, be merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or
Adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Embodiment 1: referring to figure 1, under a kind of bulk cement Pneumatic transport shipment system, including cement storage cavern bottom storehouse
Material system 3, air compressor system 6, Pneumatic conveyer 4, conveyance conduit 8, buffering current stabilization storehouse 11, bulk cement ship loader 12.Institute
The cement storage cavern bottom storehouse blanking system 3 stated is connected to cement storage cavern 2 and Pneumatic conveyer 4, the air compressor system 6 and steady
Air accumulator 5 is pressed to be connected to, the pressure stabilizing air accumulator 5 is connected to Pneumatic conveyer 4, the Pneumatic conveyer 4 and conveying
Pipeline 8 is connected to, and the conveyance conduit 8 is connected to buffering current stabilization storehouse 11, and the buffering current stabilization storehouse 11 and bulk cement are loaded onto ship
Machine 12 is connected to, and the bulk cement ship loader 12 is connected to the container 15 being located on environmentally friendly telescopic bulk head 14.It is described to gather dust
Device 1 is arranged in 2 top of cement storage cavern, and the explosion-proof valve 9, dust-precipitator 1 are arranged in 11 top of buffering current stabilization storehouse, the material position
Detection device 10 is arranged in buffering 11 upper side of current stabilization storehouse, and the dust-precipitator 1 is arranged in 12 top of bulk cement ship loader.
Cement in cement bunker 2 is directly sent into Pneumatic conveyer 4 by cement storage cavern bottom storehouse blanking system 3.
Air compressor system 6 is connected to by pressure stabilizing air accumulator 5 with Pneumatic conveyer 4.
Pneumatic conveyer 6 is connected to buffering current stabilization storehouse 11 by conveyance conduit 8 and carries out cement transportation.
Dust-precipitator 1 is arranged in 11 top of buffering current stabilization storehouse, guarantees that buffering current stabilization storehouse 11 will not generate fugitive dust.
Explosion-proof valve 9 is arranged in 11 top of buffering current stabilization storehouse, guarantees that buffering current stabilization storehouse 11 will not be excessively high or too low because of air pressure
And generate wharf explosion phenomenon.
Material-level detecting device 10 is arranged in buffering 11 upper side of current stabilization storehouse, guarantees that buffering current stabilization storehouse 11 will not be because of material position mistake
It is high and buy securities with all one's capital.
Dust-precipitator 1 is arranged in 12 top of bulk cement ship loader, and pipe of calling prisoners in after letting them out for exercise is connected to environmentally friendly 14 top of telescopic bulk head, protects
Fugitive dust is not had during card shipment.
Embodiment 2: referring to figure 1, under a kind of bulk cement Pneumatic transport shipment system, including cement storage cavern bottom storehouse
Material system 3, air compressor system, Pneumatic conveyer 4, conveyance conduit 8, buffering current stabilization storehouse 11, bulk cement ship loader 12；It is described
One end of cement storage cavern bottom storehouse blanking system is connected to the bottom end of cement storage cavern 2, the top of the other end and the Pneumatic conveyer
Portion's connection；The air compressor system is connected to by pipeline with the air inlet of a pressure stabilizing air accumulator 5, the outlet of the pressure stabilizing air accumulator
Mouth is connected to by pipeline with the air inlet of the Pneumatic conveyer；The Pneumatic conveyer corresponds to air inlet position and is equipped with
Material mouth, feed inlet of the discharge port by conveyance conduit and the top in the buffering current stabilization storehouse, the bottom in the buffering current stabilization storehouse
Discharge port be connected to one end of bulk cement ship loader, the other end of the bulk cement ship loader and bulk cement to be subjected
Container 15 be connected to；The top in the buffering current stabilization storehouse is equipped with material-level detecting device, explosion-proof valve and dust-precipitator.
Bottom storehouse blanking system 3 is the cement bunker blanking device being arranged in below cement storage cavern, is used for cement storage cavern bottom storehouse
In the cement blanking to Pneumatic conveyer 4 of discharge port unloading.
Air compressor system includes air compressor and air accumulator, for providing compressed air to Pneumatic conveyer 4.
The structure of pressure stabilizing air accumulator is identical as the structure of existing air accumulator, can be with since it is with certain volume
Have the function that constant compression air pressure.
Preferred embodiment are as follows: the top of the bulk cement ship loader is equipped with dust-precipitator.
Preferred embodiment are as follows: the Pneumatic conveyer includes one for accommodating the cylinder of cement, the bottom of the cylinder
Portion is equipped with feed inlet, which connect with the cement storage cavern bottom storehouse blanking system；The bottom end of the cylinder be equipped with into
Port, the corresponding other end are equipped with discharge port.
Preferred embodiment are as follows: the material in the buffering current stabilization storehouse is steel；The Pneumatic conveyer includes a use
In the cylinder for accommodating cement, the top of the cylinder is equipped with dust-precipitator and explosion-proof valve, and the side at the top of the cylinder is equipped with material position
Detection device.
The cement for being contained in cement storage cavern enters cement storage cavern bottom storehouse blanking system 3 by bottom discharge port, then again by gas
The top feed mouth of power conveying device 4 enters in Pneumatic conveyer 4, and cement falls to pneumatic conveying dress in self gravitation effect
Set 4 bottom, the compressed air that air compressor system provides via pressure stabilizing air accumulator, then by Pneumatic conveyer 4 air inlet into
Enter in Pneumatic conveyer 4, by the cement for dropping down onto 4 bottom of Pneumatic conveyer by discharge port, is delivered to by conveyance conduit slow
Current stabilization storehouse is rushed, is specifically entered in buffering current stabilization storehouse from the feed inlet at the top in buffering current stabilization storehouse, then by the bottom in buffering current stabilization storehouse
Discharge port enter bulk cement ship loader, then be delivered in the container of bulk cement to be subjected.The present invention uses pneumatic conveying
Mode cement is delivered in the container of bulk cement to be subjected by storage cavern, be arranged on multiple component devices of transporting equipment
Dust-precipitator.To reach the generation for inhibiting fugitive dust.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (4)
1. a kind of bulk cement Pneumatic transport shipment system, it is characterised in that: including cement storage cavern bottom storehouse blanking system, air compressor machine
System, Pneumatic conveyer, conveyance conduit, buffering current stabilization storehouse, bulk cement ship loader；The cement storage cavern bottom storehouse blanking system
One end be connected to the bottom end of cement storage cavern, the other end is connected to the top of the Pneumatic conveyer；The air compressor system
It is connected to by pipeline with the air inlet of a pressure stabilizing air accumulator, the gas outlet of the pressure stabilizing air accumulator passes through pipeline and the pneumatic transporting
The air inlet of device is sent to be connected to；The Pneumatic conveyer corresponds to air inlet position equipped with discharge port, which passes through conveying
The feed inlet at the top in pipeline and the buffering current stabilization storehouse, the discharge port and bulk cement of the bottom in the buffering current stabilization storehouse are loaded onto ship
One end of machine is connected to, the other end of the bulk cement ship loader and the reservoir of bulk cement to be subjected；The buffering is steady
The top for flowing storehouse is equipped with material-level detecting device, explosion-proof valve and dust-precipitator.
2. bulk cement Pneumatic transport shipment system according to claim 1, it is characterised in that: the bulk cement shipment
The top of machine is equipped with dust-precipitator.
3. bulk cement Pneumatic transport shipment system according to claim 1, it is characterised in that: the Pneumatic conveyer
Including one for accommodating the cylinder of cement, the bottom of the cylinder is equipped with feed inlet, under the feed inlet and the cement storage cavern bottom storehouse
The connection of material system；The bottom end of the cylinder is equipped with air inlet, and the corresponding other end is equipped with discharge port.
4. bulk cement Pneumatic transport shipment system according to claim 1, it is characterised in that: the buffering current stabilization storehouse
Material is steel；The Pneumatic conveyer includes one for accommodating the cylinder of cement, the top of the cylinder be equipped with dust-precipitator and
The side of explosion-proof valve, the top of the cylinder is equipped with material-level detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910744033.XA CN110436223A (en) | 2019-08-13 | 2019-08-13 | A kind of bulk cement Pneumatic transport shipment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910744033.XA CN110436223A (en) | 2019-08-13 | 2019-08-13 | A kind of bulk cement Pneumatic transport shipment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110436223A true CN110436223A (en) | 2019-11-12 |
Family
ID=68435119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910744033.XA Pending CN110436223A (en) | 2019-08-13 | 2019-08-13 | A kind of bulk cement Pneumatic transport shipment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110436223A (en) |
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| CN2402646Y (en) * | 2000-01-14 | 2000-10-25 | 山东建筑材料工业学院 | Pneumatic storehouse bottom bulk cement loader |
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| CN207061323U (en) * | 2017-07-11 | 2018-03-02 | 江西五菱机电设备有限公司 | A kind of pulverized coal air pressure-feeding apparatus |
| CN109230546A (en) * | 2018-07-09 | 2019-01-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Pneumatic ash transmitting system |
| CN109733911A (en) * | 2018-12-25 | 2019-05-10 | 滁州安瑞汇龙电子有限公司 | A kind of cement bulk system and its working method |
| CN210504799U (en) * | 2019-08-13 | 2020-05-12 | 安徽知华粉体装备科技有限公司 | Bulk cement pneumatic conveying shipment system |
-
2019
- 2019-08-13 CN CN201910744033.XA patent/CN110436223A/en active Pending
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|---|---|---|---|---|
| KR20000019517U (en) * | 1999-04-14 | 2000-11-15 | 백선희 | Vacuum sand blasting apparatus |
| CN2402646Y (en) * | 2000-01-14 | 2000-10-25 | 山东建筑材料工业学院 | Pneumatic storehouse bottom bulk cement loader |
| CN2402647Y (en) * | 2000-01-14 | 2000-10-25 | 山东建筑材料工业学院 | Moving dustless bulk carloader |
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