CN203810053U - Buffer device and slurry pipeline conveying system - Google Patents
Buffer device and slurry pipeline conveying system Download PDFInfo
- Publication number
- CN203810053U CN203810053U CN201420203067.0U CN201420203067U CN203810053U CN 203810053 U CN203810053 U CN 203810053U CN 201420203067 U CN201420203067 U CN 201420203067U CN 203810053 U CN203810053 U CN 203810053U
- Authority
- CN
- China
- Prior art keywords
- slurry
- pipeline
- pump
- buffer storage
- buffer memory
- 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.)
- Expired - Lifetime
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 104
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims description 50
- 238000005086 pumping Methods 0.000 claims description 30
- 210000005056 cell body Anatomy 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000013055 pulp slurry Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 241000196324 Embryophyta Species 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000004062 sedimentation Methods 0.000 description 6
- 238000000151 deposition Methods 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000009183 running Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- -1 by underflow pump Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a buffer device in a slurry pipeline conveying system and the slurry pipeline conveying system including the buffer device. The buffer device comprises a buffer tank, a feeding pump and a stirring mechanism. A slurry outlet of the buffer tank is connected with the feeding pump, and the stirring mechanism is arranged in the buffer tank and is used for stirring slurry stored in the buffer tank evenly. The buffer device is innovatively introduced into the slurry pipeline conveying system, and the problem of ore slurry overflowing probably happening when the input amount of a slurry pipeline is larger than the conveying amount of a main pump due to equipment faults or other causes or the problem that the slurry pipeline can not convey the slurry continuously due to the causes that production of a concentrating mill is not balanced and ore slurry amount is varying are effectively solved. The purpose that the slurry is stably buffered and evenly conveyed is achieved. Meanwhile, the stirring mechanism is innovatively arranged in the buffer device, so that it is guaranteed that static settling can not happen to high concentration slurry, and the conveying efficiency of the slurry pipeline is overall improved.
Description
Technical field
The utility model relates to the pipe transportation technology field of slurry, relates more specifically to buffer storage and the Slurry Pipeline Transportation system that is provided with described buffer storage in a kind of Slurry Pipeline Transportation system.
Background technique
Long-distance slurry pipe transportation technology is emerging new high-tech industry, is also the bright spot of low-carbon (LC), green economy simultaneously.Long-distance slurry pipeline is carried and is required the concentration of slurry from underflow pump is concentrated in 62%～68%, and in the course of conveying of ore pulp slurry, conventionally may be because of the fault of equipment or other reasons, make the slurry amount of pipeline input be greater than the quantity delivered of main pump reality, when the reason such as technological requirement that also has batch feed need collect together ore deposit causes ore pulp not carried immediately, need to deposit ore pulp slurry temporarily, little when large while causing pulp conveying amount because ore dressing plant production is unbalanced in prior art in addition, when pipeline can not be carried continuously, also need to carry out by means of the interim buffer storage of ore pulp slurry the coordination of slurry conveying, etc. these reasons make to need buffer storage to keep in ore pulp slurry in Slurry Pipeline Transportation system, in the time of needs slurry body, be transported to main pump by buffer storage, then carried out again next step conveying by main pump, and slurry concentration after underflow pump is concentrated is generally between 62%～68%, the buffer storage that this slurry is stored must meet the condition of the slurry generation sedimentation that can not make this concentration range, prior art can not meet the slurry buffer storage of this service condition in Technology of Slurry Pipeline Delivery field.
Summary of the invention
The utility model is based on above-mentioned prior art problem, buffer storage in a kind of Slurry Pipeline Transportation system of proposition of innovation, by design construction buffer storage appropriate in Slurry Pipeline Transportation system, efficiently solve because equipment failure or other reasons, the excessive problem of ore pulp that may cause while making slurry pipeline input quantity be greater than main pump quantity delivered, or because ore dressing plant produces unbalanced, little and the slurry pipeline problem of slurry body continuously that causes when large when ore pulp amount, realize the steady buffer memory of slurry, balanced object of carrying, by innovation stirring mechanism is set in buffer storage simultaneously, ensure that static sedimentation can not occur high concentration buffer memory slurry, entirety has improved Slurry Pipeline Transportation efficiency.
It is as follows that the utility model solves the problems of the technologies described above taked technological scheme:
A buffer storage in Slurry Pipeline Transportation system, comprises buffer memory groove 101, feeding pump 102 and stirring mechanism, and the slurry outlet 112 of described buffer memory groove 101 is connected in described feeding pump 102, and described stirring mechanism is arranged in described buffer memory groove 101.
Further according to buffer storage described in the utility model, wherein said buffer memory groove 101 comprises cell body 105 and pressure-resisting plate 111, described cell body 105 is the cylindrical tube structure of upper end open, lower end closed, and described pressure-resisting plate 111 is along the inwall setting of described cell body 105.
Further, according to buffer storage described in the utility model, the diameter of wherein said cell body 105 is between 12 meters to 16 meters, and the volume of described cell body 105 is between 1200 cubic metres to 3000 cubic metres, and described pressure-resisting plate 111 is made by the thick steel plate of 20mm.
Further according to buffer storage described in the utility model, wherein near the sidewall open top of described cell body, be provided with flow-off 113, on described flow-off 113, be connected with spill pipe 114, on the bottom sidewall of the close bottom surface of described cell body, offer described slurry outlet 112, described slurry outlet 112 is connected in the pumping entrance of described feeding pump 102 by pipeline.
Further, according to buffer storage described in the utility model, wherein said feeding pump 102 adopts the centrifugal pump under variable frequency regulating speed control pattern.
Further according to buffer storage described in the utility model, wherein said stirring mechanism comprises motor 104, main shaft 107 and rotor blade, described motor 104 is connected in described main shaft 107, and drive described main shaft 107 to rotate, described rotor blade is installed on described main shaft 107, and is placed in described buffer memory groove 101 with described main shaft 107.
Further according to buffer storage described in the utility model, wherein said stirring mechanism also comprises frequency variator 103, crossbeam 106 and positioning element 110, described rotor blade comprises upper blade 108 and lower blade 109, described frequency variator 103 is connected between driving power circuit and described motor 104, described motor 104 is connected in the upper end of described main shaft 107, described motor 104 is fixedly installed in the open top of described buffer memory groove 101 by crossbeam 106, the top of described main shaft 107 is radially provided with described upper blade 108, the bottom of described main shaft 107 is radially provided with described lower blade 109, the bottom of described main shaft 107 is connected in described positioning element 110.
Further according to buffer storage described in the utility model, wherein said buffer memory groove 101 has cylindrical tube shape structure, described crossbeam 106 is the open top setting across described buffer memory groove 101 along diametric(al), described motor 104 is fixedly installed in the middle part of described crossbeam, and described main shaft 107 is along cylindrical center's axis location of described buffer memory groove 101.
A kind of Slurry Pipeline Transportation system, comprise deckered stock chest 1, underflow pump 2, main pump 3, main pipeline 4 and buffer storage described in the utility model 100, the slurry outlet of described deckered stock chest 1 is connected in the pumping entrance of described underflow pump 2 through pipeline, the pumping outlet of described underflow pump 2 is connected to the pumping entrance of described main pump 3 and the buffer memory groove 101 of described buffer storage 100 through pipeline, the pumping outlet of the feeding pump 102 in described buffer storage 100 is connected in the pumping entrance of described main pump 3 by pipeline, the pumping outlet of described main pump 3 is connected in described main pipeline 4 by pipeline.
Further, according to Slurry Pipeline Transportation system described in the utility model, the pumping outlet of wherein said feeding pump 102 is further also connected in higher level's pumping plant by pipeline.
At least can reach following technique effect by the technical solution of the utility model:
1), the utility model innovation structure buffer storage in Technology of Slurry Pipeline Delivery field first, solve in slurry transporting system because of reasons such as equipment failures, the excessive problem of ore pulp that may cause while making slurry pipeline input quantity be greater than main pump quantity delivered, has ensured Slurry Pipeline Transportation safety;
2) the slurry buffer storage, providing by the utility model has been avoided producing unbalanced because of ore dressing plant, little and the slurry pipeline problem of slurry body continuously that causes when large when ore pulp amount, steady buffer memory and balanced conveying of having realized slurry, ensured Slurry Pipeline Transportation efficiency;
3), the introducing stirring mechanism of buffer storage described in the utility model innovation, make high concentration buffer memory slurry that static sedimentation can not occur, prevented from depositing because of slurry the line clogging problem causing.
Brief description of the drawings
Accompanying drawing 1 arranges structural representation for buffer storage described in the utility model in Slurry Pipeline Transportation system;
Accompanying drawing 2 is the concrete structure schematic diagram of the buffer storage in Slurry Pipeline Transportation system described in the utility model.
In figure, the implication of each reference character is as follows:
1-deckered stock chest, 2-underflow pump, 3-main pump, 4-main pipeline;
100-buffer storage, 101-buffer memory groove, 102-feeding pump, 103-frequency variator, 104-motor, 105-cell body, 106-crossbeam, 107-main shaft, 108-upper blade, 109-lower blade, 110-positioning element, 111-pressure-resisting plate, the outlet of 112-slurry, 113-flow-off, 114-spill pipe.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail, so that those skilled in the art can more clearly understand the utility model, but does not therefore limit protection domain of the present utility model.
First by reference to the accompanying drawings 1 provide the set-up mode of buffer storage described in the utility model in Slurry Pipeline Transportation system, namely be provided with the Slurry Pipeline Transportation system architecture of buffer storage described in the utility model, entirety comprises: deckered stock chest 1, underflow pump 2, main pump 3, buffer storage 100 and main pipeline 4, according to the difference of mode of movement, design two pipeline branch roads that lead to main pump 3, in deckered stock chest 1 for depositing concentration after thickner the is concentrated ore pulp slurry between 62%～68%, the slurry outlet of deckered stock chest is connected in the pumping entrance of underflow pump 2 through pipeline, the pumping outlet of underflow pump 2 separates two branch roads, wherein a branch road is connected in main pump 3 by pipeline, with directly to main pump slurry body, another branch road is connected in buffer storage 100 by pipeline, described buffer storage 100 comprises buffer memory groove 101 and feeding pump 102, one of them pumping outlet of described underflow pump 2 is connected in buffer memory groove 101 by pipeline, the slurry outlet of described buffer memory groove 101 connects feeding pump 102, the pumping outlet of feeding pump 102 is connected in main pump 3 by pipeline, thereby in the time of needs buffer memory slurry, by underflow pump, slurry is delivered to buffer storage, in the time need to carrying the slurry of buffer memory, by feeding pump, the slurry in buffer memory groove is carried to main pump pumping again, the pumping outlet of main pump 3 is connected in by pipeline the main pipeline that slurry is carried, the slurry that is finally delivered to main pump 3 is exported to main pipeline 4 by main pump, growing the slurry of distance carries.By this scheme, ensure the continuous high-efficient operation of whole slurry transportation pipeline system, if when wherein having there is equipment failure and making the slurry output quantity of underflow pump be greater than the slurry quantity delivered of main pump, or while there is the problem of the discontinuous slurry body of slurry pipeline, can utilize buffer storage 100 to carry out interim buffer memory to slurry body, and as required the slurry in buffer storage is supplied to conveying main pump in good time, thereby steady buffer memory and balanced conveying of effectively having realized slurry, ensured Slurry Pipeline Transportation efficiency.
As shown in Figure 2, buffer storage 100 entirety that are applied in the utility model comprise buffer memory groove 101, feeding pump 102 and stirring mechanism, described buffer memory groove 101 can design its size as required, and comprise cell body 105 and pressure-resisting plate 111, described cell body 105 is the cylindrical tube structure of upper end open, lower end closed, diameter is generally at 12 meters-16 meters, capacity meets 12 rice diameter specifications can store approximately 1200 cubic metres of ore pulp slurries, 16 rice diameter specifications can be stored approximately 3000 cubic metres of ore pulp slurries, and the cell body of this amount of capacity can be alleviated production pressure greatly.Due to buffer memory groove fill ore pulp slurry after quality larger, so ground adopts pile foundation form, be provided with along cell body 105 inwalls the pressure-resisting plate 111 that is made as steel structural form with 20mm Plate Steel simultaneously.On near the sidewall open top of described cell body, be provided with flow-off 113, described flow-off 113 is connected with spill pipe 114, in time the slurry overflow that exceeds buffer memory load being discharged.In the bottom of described cell body 105, preferably near offering slurry outlet 112 near sidewall bottom surface, described slurry outlet 112 is connected in the pumping entrance of feeding pump 102 by pipeline, in the time that needs are carried, slurry flows automatically to feeding pump entrance by slurry outlet, thereby by feeding pump 102, the buffer memory slurry pumping on time in cell body is exported.The pumping outlet of feeding pump 102 is connected in main pump 3 by pipeline, the pulp conveying that preferred described feeding pump is stored in by buffer memory groove to main pump in, also when the ore pulp that can store in buffer memory groove does not meet pipeline transportation process and requires, underproof ore pulp is returned to upper track technological process by flow process pipeline to be processed again, therefore the pumping of described feeding pump 102 outlet is preferably connected in two pipeline branch roads, wherein one is connected in main pump by pipeline, and another is connected in higher level's pumping plant by flow process pipeline.Described feeding pump 102 preferably adopts centrifugal pump, and the control mode of feeding pump adopts frequency control of motor speed, is characterized in controlling the suction pressure of supplying with main pump by adjusting feeding pump speed, guarantees the normal operation of main pump.
Because the concentration of the ore pulp slurry that fills in buffer memory groove is generally between 62%～68%, for preventing that ore pulp slurry from buffer memory groove, static sedimentation occurring, what the utility model was innovated is provided with stirring mechanism in buffer memory groove, as shown in Figure 2, described stirring mechanism comprises frequency variator 103, motor 104, crossbeam 106, main shaft 107, upper blade 108, lower blade 109 and positioning element 110.Described frequency variator 103 is connected between driving power circuit and motor 104, can rotate by drive motor 104, described motor 104 is connected in main shaft 107, and can drive main shaft 107 to rotate, described motor 104 is fixedly installed in the open top of described cell body 105 by crossbeam 106, concrete described crossbeam arranges across cell body opening along the open-topped diametric(al) of cell body 105, and then described motor is fixedly installed on described crossbeam 106, thereby described crossbeam supports for motor provides running.The top of described main shaft 107 is radially provided with upper blade 108, the bottom of described main shaft 107 is radially provided with lower blade 109, the bottom of described main shaft 107 is connected in positioning element 110, by described positioning element 110, described main shaft is kept to fixing along cylindrical center's axis of cell body 105.When described stirring mechanism work, by frequency variator 103 starting electrical machinery runnings, and drive main shaft 107 to rotate by motor 104, the rotation of main shaft drives upper blade 108 and the lower blade 109 on it, installed synchronously to rotate, the rotation of lower blade 109 makes the ore pulp slurry of cell body bottom flow toward top, upper blade 108 rotates the ore pulp slurry on cell body top is flowed toward bottom, thereby ore pulp slurry is more stirred in cell body and fully mix, avoided static sedimentation phenomenon, described frequency variator 103 can regulate motor speed as required.
The utility model by least arranging two pipeline branch roads in slurry transportation pipeline system, can directly realize the pumping output of slurry by a branch road, by another branch road can allow qualified ore pulp that underflow pump transports out store and stir after again flow to main pump system by feeding pump, in Slurry Pipeline Transportation process, each booster station all can arrange the buffer storage shown in the utility model, its volume size is relevant with pipeline transmission capacity and technological requirement, efficiently solve because equipment failure or other reasons by the technical solution of the utility model, the excessive problem of ore pulp that may cause while making slurry pipeline input quantity be greater than main pump quantity delivered, or because ore dressing plant produces unbalanced, little and the slurry pipeline problem of slurry body continuously that causes when large when ore pulp amount, realize the steady buffer memory of slurry, balanced object of carrying, by innovation stirring mechanism is set in buffer storage simultaneously, ensure that static sedimentation can not occur high concentration buffer memory slurry, prevent ore pulp deposition blocking pipe, improve Slurry Pipeline Transportation efficiency.
Below be only that preferred implementation of the present utility model is described; the technical solution of the utility model is not limited to this; the any known distortion that those skilled in the art do on the basis of major technique design of the present utility model all belongs to the claimed technology category of the utility model, and the concrete protection domain of the utility model is as the criterion with the record of claims.
Claims (10)
1. the buffer storage in a Slurry Pipeline Transportation system, it is characterized in that, comprise buffer memory groove (101), feeding pump (102) and stirring mechanism, the slurry outlet (112) of described buffer memory groove (101) is connected in described feeding pump (102), and described stirring mechanism is arranged in described buffer memory groove (101).
2. buffer storage according to claim 1, it is characterized in that, described buffer memory groove (101) comprises cell body (105) and pressure-resisting plate (111), described cell body (105) is the cylindrical tube structure of upper end open, lower end closed, and described pressure-resisting plate (111) is along the inwall setting of described cell body (105).
3. buffer storage according to claim 2, it is characterized in that, the diameter of described cell body (105) is between 12 meters to 16 meters, and the volume of described cell body (105) is between 1200 cubic metres to 3000 cubic metres, and described pressure-resisting plate (111) is made by the thick steel plate of 20mm.
4. buffer storage according to claim 2, it is characterized in that, on near the sidewall open top of described cell body, be provided with flow-off (113), on described flow-off (113), be connected with spill pipe (114), on the bottom sidewall of the close bottom surface of described cell body, offer described slurry outlet (112), described slurry outlet (112) is connected in the pumping entrance of described feeding pump (102) by pipeline.
5. buffer storage according to claim 1, is characterized in that, described feeding pump (102) adopts the centrifugal pump under variable frequency regulating speed control pattern.
6. according to the buffer storage described in claim 1-5 any one, it is characterized in that, described stirring mechanism comprises motor (104), main shaft (107) and rotor blade, described motor (104) is connected in described main shaft (107), and drive described main shaft (107) to rotate, it is upper that described rotor blade is installed on described main shaft (107), and be placed in described buffer memory groove (101) with described main shaft (107).
7. buffer storage according to claim 6, it is characterized in that, described stirring mechanism also comprises frequency variator (103), crossbeam (106) and positioning element (110), described rotor blade comprises upper blade (108) and lower blade (109), described frequency variator (103) is connected between driving power circuit and described motor (104), described motor (104) is connected in the upper end of described main shaft (107), described motor (104) is fixedly installed in the open top of described buffer memory groove (101) by crossbeam (106), the top of described main shaft (107) is radially provided with described upper blade (108), the bottom of described main shaft (107) is radially provided with described lower blade (109), the bottom of described main shaft (107) is connected in described positioning element (110).
8. buffer storage according to claim 7, it is characterized in that, described buffer memory groove (101) has cylindrical tube shape structure, described crossbeam (106) is the open top setting across described buffer memory groove (101) along diametric(al), described motor (104) is fixedly installed in the middle part of described crossbeam, and described main shaft (107) is along cylindrical center's axis location of described buffer memory groove (101).
9. a Slurry Pipeline Transportation system, it is characterized in that, comprise deckered stock chest (1), underflow pump (2), main pump (3), buffer storage (100) described in main pipeline (4) and claim 1-8 any one, the slurry outlet of described deckered stock chest (1) is connected in the pumping entrance of described underflow pump (2) through pipeline, the pumping outlet of described underflow pump (2) is connected to the pumping entrance of described main pump (3) and the buffer memory groove (101) of described buffer storage (100) through pipeline, the pumping outlet of the feeding pump (102) in described buffer storage (100) is connected in the pumping entrance of described main pump (3) by pipeline, the pumping outlet of described main pump (3) is connected in described main pipeline (4) by pipeline.
10. Slurry Pipeline Transportation system according to claim 9, is characterized in that, the pumping outlet of described feeding pump (102) is further also connected in higher level's pumping plant by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420203067.0U CN203810053U (en) | 2014-04-24 | 2014-04-24 | Buffer device and slurry pipeline conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420203067.0U CN203810053U (en) | 2014-04-24 | 2014-04-24 | Buffer device and slurry pipeline conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810053U true CN203810053U (en) | 2014-09-03 |
Family
ID=51448801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420203067.0U Expired - Lifetime CN203810053U (en) | 2014-04-24 | 2014-04-24 | Buffer device and slurry pipeline conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953852A (en) * | 2014-04-24 | 2014-07-30 | 云南大红山管道有限公司 | Buffer storage device and pulp pipeline conveying system |
| CN104295906A (en) * | 2014-10-13 | 2015-01-21 | 云南大红山管道有限公司 | Multi-pipeline and multi-station pulp pipe conveying system and pulp conveying control method |
-
2014
- 2014-04-24 CN CN201420203067.0U patent/CN203810053U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953852A (en) * | 2014-04-24 | 2014-07-30 | 云南大红山管道有限公司 | Buffer storage device and pulp pipeline conveying system |
| CN103953852B (en) * | 2014-04-24 | 2017-10-10 | 云南大红山管道有限公司 | A kind of buffer storage and Slurry Pipeline Transportation system |
| CN104295906A (en) * | 2014-10-13 | 2015-01-21 | 云南大红山管道有限公司 | Multi-pipeline and multi-station pulp pipe conveying system and pulp conveying control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103953852A (en) | Buffer storage device and pulp pipeline conveying system | |
| CN108661703A (en) | coarse fraction tailing paste filling method and filling system | |
| CN107476821B (en) | An ultra-fine full tailings paste filling system | |
| CN111734483A (en) | Tailing thickening system and use method thereof | |
| CN201459735U (en) | Concrete tubular pile blade conveying system | |
| CN102829330B (en) | Advanced operating method for underflow pump of ore pulp pipeline transportation system | |
| CN208294565U (en) | Tailing slurry filling system | |
| CN203810053U (en) | Buffer device and slurry pipeline conveying system | |
| CN106808590A (en) | The mortar mixer that a kind of dry and wet stirring is separate | |
| CN106065783A (en) | Device for filling and using method thereof for extensive non-metal mine | |
| CN208449585U (en) | Highly viscous slurry automatic cycle switching system | |
| CN207193907U (en) | A kind of efficient provisions for grouting of hydraulic engineering | |
| CN104154419A (en) | Double-concentration-basin slurry pipeline conveying system | |
| CN102581952B (en) | Preparing method of concrete | |
| CN103773587A (en) | On-line silicon wafer cutting mortar recycling method and device | |
| CN201561271U (en) | Conveying pipeline flow adjusting structure | |
| CN204916742U (en) | Finely tune buffer memory hopper of mix in succession | |
| CN203577715U (en) | Construction mechanical paint production system device | |
| CN103343222B (en) | Accurate metering and transporting system of manganese ore powder | |
| CN110435003A (en) | A kind of concrete grouting equipment and grouting method | |
| CN204522939U (en) | A kind of concrete additive processing unit (plant) | |
| CN203996957U (en) | A kind of slurry can filler | |
| CN110469363B (en) | Vertical sand silo sand discharging device capable of discharging materials continuously and stably | |
| CN202325664U (en) | Overground assembly type mine filling device | |
| CN203916851U (en) | Ore lapping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |