CN110899116A - Multistage air distribution screening device - Google Patents
Multistage air distribution screening device Download PDFInfo
- Publication number
- CN110899116A CN110899116A CN201911172113.9A CN201911172113A CN110899116A CN 110899116 A CN110899116 A CN 110899116A CN 201911172113 A CN201911172113 A CN 201911172113A CN 110899116 A CN110899116 A CN 110899116A
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- sand
- screening
- air
- shell
- heavy
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- 238000012216 screening Methods 0.000 title claims abstract description 48
- 238000009826 distribution Methods 0.000 title claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 97
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 239000000428 dust Substances 0.000 claims abstract description 26
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 abstract description 13
- 239000004567 concrete Substances 0.000 abstract description 11
- 239000011384 asphalt concrete Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 206010010904 Convulsion Diseases 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of machine-made sand production, and discloses a multistage air distribution screening device which comprises a shell, wherein an air separation channel is arranged in the shell, a feeding hole is formed in one end of the air separation channel, the feeding hole is connected with a feeding hopper, and one side, away from the air separation channel, of the feeding hole is connected with a blower; the other end of the winnowing channel is connected with a heavy-removing mechanism, the top of the heavy-removing mechanism is provided with an air draft dust removal pipe, and the bottom of the heavy-removing mechanism is provided with a fine sand discharge hole; the bottom of the winnowing channel is provided with a receiving hopper, a discharge port of the receiving hopper is connected with a screening mechanism arranged at the bottom of the shell, one end of the screening mechanism is provided with a coarse sand discharge port, and the bottom of the screening mechanism is provided with a medium sand conveying mechanism; and a medium sand discharge hole is formed in one end, far away from the coarse sand discharge hole, of the medium sand conveying mechanism. Adopt this multistage air distribution to select screening plant to carry out mechanism sand screening, can obtain the sand material of multiple different gradation simultaneously respectively, realized the screening that becomes more meticulous of sand material, effectively guarantee the quality of high-quality concrete or asphalt concrete.
Description
Technical Field
The invention belongs to the technical field of machine-made sand production, and particularly relates to a multistage air distribution screening device.
Background
The machine-made sand is made into particles with the particle size less than 5mm by blasting, crushing and screening rocks. The machine-made sand is rich in edges and corners, is relatively clean, is different from natural sand and common stone chips, and is an ideal concrete fine aggregate. Most of the common concrete prepared in China adopts yellow sand, and only when the qualified yellow sand is lacked, the machine-made sand is adopted. But the foreign concrete adopts machine-made sand besides yellow sand. Since 1994, our country has conducted experimental research and engineering application on the physical properties and mineral composition of machine-made sand and the compressive strength, tensile strength at cleavage, elastic modulus, flexural strength, shrinkage creep and the like of concrete prepared from machine-made sand, and practice shows that it is technically feasible and economically reasonable to prepare concrete by machine-made sand instead of natural sand.
In the preparation process of the machine-made sand, dust in the finished sand needs to be removed, so that the quality of the machine-made sand is ensured, and a winnowing and screening device is needed when the dust in the finished sand is removed. The existing winnowing device has single function, only can separate sand and powder, and along with the continuous development of the construction industry, in order to obtain high-quality concrete or asphalt concrete, the grading requirement on sand in the preparation process of the concrete or the asphalt concrete is finer, and the traditional winnowing and screening device cannot meet the use requirement of the high-quality concrete or the asphalt concrete.
Disclosure of Invention
The invention aims to provide a multistage air distribution screening device to solve one or more problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a multi-stage air distribution screening device comprises a shell, wherein a feed hopper is arranged on one side of the top of the shell, an air separation channel is arranged in the shell, a feed inlet is formed in one end of the air separation channel, the feed inlet is connected with a discharge hole of the feed hopper, and a blower is connected to one side, away from the air separation channel, of the feed inlet; the other end of the winnowing channel is connected with a heavy-removing mechanism, the top of the heavy-removing mechanism is provided with an air draft dust removal pipe, and the bottom of the heavy-removing mechanism is provided with a fine sand discharge hole; one end of the air draft dust removal pipe extends out of the shell and is connected with an air draft dust remover; the bottom of the winnowing channel is provided with a plurality of material receiving hoppers, discharge ports of all the material receiving hoppers are connected with a screening mechanism arranged at the bottom of the shell, one end of the screening mechanism, which is close to the feed port, is provided with a coarse sand discharge port, and the bottom of the screening mechanism is provided with a medium sand conveying mechanism; and a medium sand discharge hole is formed in one end, far away from the coarse sand discharge hole, of the medium sand conveying mechanism.
Further, the air outlet of hair-dryer is the platykurtic, the feed inlet with the shape of the discharge gate of feeder hopper all is with the rectangular form that the air outlet of hair-dryer matches.
Furthermore, one end of the winnowing channel, which is far away from the feeding hole, is of an arc structure, and the bottom of the arc end of the winnowing channel is connected with the feeding hole of the re-removing mechanism.
Further, the heavy removal mechanism comprises a heavy removal box, the bottom of the heavy removal box is of a funnel structure, and the fine sand discharge hole is formed in the bottom end of the funnel structure of the heavy removal box; the box top of the heavy-load removal box comprises a high-side box top and a low-side box top, the high-side box top is connected with the air draft dust removal pipe, and the low-side box top is provided with a feeding hole.
Further, the screening mechanism is a vibrating screen.
Further, the shale shaker slope set up in the bottom of shell, the coarse sand discharge gate set up in the lower one end of shale shaker.
Furthermore, the medium sand conveying mechanism is a screw conveyor, and the screw conveyor is arranged along the axial direction of the vibrating screen.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects or advantages:
the multi-stage air distribution screening device provided by the invention can be used for carrying out air separation on sand materials through the air separation channel to obtain medium coarse sand and a mixture of fine sand and dust, then the mixture of the fine sand and the dust enters the re-removing mechanism to carry out sand-powder separation to obtain clean fine sand and powder, and the medium coarse sand enters the screening mechanism to be screened to respectively obtain clean coarse sand and medium sand. The multi-stage air distribution screening device provided by the invention is used for carrying out mechanical sand screening, so that a plurality of sand materials with different grades can be obtained simultaneously, the fine screening of the sand materials is realized, and the quality of high-quality concrete or asphalt concrete is effectively guaranteed.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
Fig. 1 is a schematic structural diagram of a multistage air distribution screening device provided in an embodiment of the present invention;
fig. 2 is a sectional view of a multi-stage winnowing screening device provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a re-removing mechanism in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is conventionally understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or the element which is indicated must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. For those skilled in the art, the drawings of the embodiments with specific meanings of the terms in the present invention can be understood in specific situations, and the technical solutions in the embodiments of the present invention are clearly and completely described. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
As shown in fig. 1 to 3, an embodiment of the invention provides a multistage air distribution screening device, which comprises a shell 1, wherein a feed hopper 2 is arranged on one side of the top of the shell 1, an air separation channel 3 is arranged in the shell 1, a feed inlet 4 is arranged at one end of the air separation channel 3, the feed inlet 4 is connected with a discharge port of the feed hopper 2, one side of the feed inlet 4, which is far away from the air separation channel 3, is connected with a blower, and one side of the feed inlet 4, which is far away from the air separation channel 3, is; the other end of the winnowing channel 3 is connected with a heavy-removing mechanism 5, the top of the heavy-removing mechanism 5 is provided with an air draft dust removal pipe 6, and the bottom of the heavy-removing mechanism is provided with a fine sand discharge hole 7; one end of the air draft dust removal pipe 6 extends out of the shell 1 and is connected with an air draft dust remover; the bottom of the winnowing channel 3 is provided with a plurality of receiving hoppers 8, discharge ports of all the receiving hoppers 8 are connected with a screening mechanism 9 arranged at the bottom of the shell 1, one end of the screening mechanism 9 close to the feed port 4 is provided with a coarse sand discharge port 10, and the bottom of the screening mechanism 9 is provided with a medium sand conveying mechanism 11; and a medium sand discharge hole 12 is formed in one end, far away from the coarse sand discharge hole 10, of the medium sand conveying mechanism 11.
The working principle of the multistage air classification screening device provided by the embodiment of the invention is as follows:
conveying the finished product sand into a feed hopper 2 by using a finished product sand conveying device, enabling the finished product sand in the feed hopper 2 to enter a feed port 4 of an air separation channel 3 from a discharge port of the finished product sand, and blowing the finished product sand entering the feed port 4 to the other end of the air separation channel 3 by using a blower; the finished sand entering the winnowing channel 3 is separated under the action of wind power and gravity to obtain medium coarse sand and a mixture of fine sand and dust, then the mixture of fine sand and dust enters the gravity removal mechanism 5 to be separated into fine sand and powder, and the medium coarse sand enters the screening mechanism 9 to be screened to respectively obtain clean coarse sand and medium sand.
By adopting the multistage air distribution screening device provided by the embodiment of the invention to carry out mechanical sand screening, a plurality of sand materials with different gradation can be obtained simultaneously, the fine screening of the sand materials is realized, and the quality of high-quality concrete or asphalt concrete is effectively guaranteed.
It should be noted that, although the sand is only sieved to coarse sand, medium sand, fine sand and powder in the embodiment of the present invention, in order to obtain sand with more gradation, the multi-stage air distribution sieving apparatus provided in the embodiment of the present invention can obtain sand with more gradation by increasing the number of sieving layers. Therefore, the screening of sand material into coarse sand, medium sand, fine sand and powder in the examples of the present invention is only for explaining the present invention and is not to be construed as limiting the present invention.
In a specific implementation process, in order to fully utilize the wind power of the blower, in a further embodiment, the air outlet of the blower in the embodiment of the invention is flat, and the shapes of the feeding hole 4 of the air separation channel 3 and the discharging hole of the feeding hopper 2 are both long strips matched with the air outlet of the blower. The air outlet of the blower is flat, so that the air blown out by the blower tends to a plane as much as possible; and the shape of the feed inlet 4 of the winnowing channel 3 and the shape of the discharge hole of the feed hopper 2 are set into a strip shape matched with the air outlet of the blower, so that the finished sand material entering the feed inlet 4 can form a finished sand material surface vertical to the plane wind blown out from the air outlet, and due to the arrangement, the wind power of the blower can be better utilized, and the resource waste is avoided.
In a specific implementation process, in order to make the dust enter the re-removing mechanism 5 more easily, in a further embodiment, one end of the air separation channel 3 away from the feeding hole 4 in the embodiment of the present invention is in an arc structure, and the bottom of the arc end is connected with the feeding hole of the re-removing mechanism 5. Because the end of the air separation channel 3 far away from the feed inlet 4 is of an arc structure, when contacting the arc end, dust and fine sand can slide downwards along the arc end, and finally smoothly enter the re-removing mechanism 5.
In a specific implementation process, the structure of the re-removing mechanism is various, and in a further embodiment, the re-removing mechanism 5 in the embodiment of the present invention specifically includes a re-removing box 51, the bottom of the re-removing box 51 is in a funnel structure, and the fine sand discharge port 7 is disposed at the bottom end of the funnel structure of the re-removing box 51; the top of the heavy-side box 51 comprises a high-side box top 52 and a low-side box top 53, the high-side box top 52 is connected with the induced draft dust removal pipe 6, and the low-side box top 53 is provided with a feeding hole. Adopt the mechanism that heavily removes of this structure, the fine sand and the dust that get into the mechanism that heavily removes need flow downwards earlier, then the dust bypasses the lateral wall between high side roof 52 and the low side roof 53 and flows upwards under the effect of convulsions dust collector, can ensure that the fine sand can not get into convulsions dust removal pipe 6 in, effectively avoid the fine sand loss.
In a specific implementation process, the screening mechanism is of various types, and in a further embodiment, the screening mechanism 9 in the embodiment of the present invention specifically adopts a vibrating screen, and further, the vibrating screen is obliquely arranged at the bottom of the housing 1, and the coarse sand outlet 10 is arranged at a lower end of the vibrating screen.
In a specific implementation process, a plurality of conveying mechanisms capable of conveying the middlings are provided, and in a further embodiment, the middling conveying mechanism 11 in the embodiment of the invention specifically adopts a screw conveyor, and the screw conveyor is arranged along the axial direction of the vibrating screen. The screw conveyer has the advantages of simple structure, small cross-sectional area, good sealing performance, convenient operation, easy maintenance, convenient closed transportation and the like, and can effectively avoid dust emission and reduce environmental pollution in the process of transporting raw materials and finished materials.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The multistage air distribution screening device is characterized by comprising a shell (1), wherein a feed hopper (2) is arranged on one side of the top of the shell (1), an air separation channel (3) is arranged in the shell (1), a feed inlet (4) is arranged at one end of the air separation channel (3), the feed inlet (4) is connected with a discharge hole of the feed hopper (2), and a blower is connected to one side, away from the air separation channel (3), of the feed inlet (4); the other end of the winnowing channel (3) is connected with a heavy-removing mechanism (5), the top of the heavy-removing mechanism (5) is provided with an air draft dust removal pipe (6), and the bottom of the heavy-removing mechanism is provided with a fine sand discharge hole (7); one end of the air draft dust removal pipe (6) extends out of the shell (1) and is connected with an air draft dust remover; the bottom of the winnowing channel (3) is provided with a plurality of receiving hoppers (8), discharge holes of all the receiving hoppers (8) are connected with a screening mechanism (9) arranged at the bottom of the shell (1), one end of the screening mechanism (9) close to the feed inlet (4) is provided with a coarse sand discharge hole (10), and the bottom of the screening mechanism (9) is provided with a medium sand conveying mechanism (11); and a medium sand discharge hole (12) is formed in one end, far away from the coarse sand discharge hole (10), of the medium sand conveying mechanism (11).
2. The multi-stage air distribution screening device according to claim 1, wherein the air outlet of the blower is flat, and the shape of the feed inlet (4) and the shape of the discharge outlet of the feed hopper (2) are both long and matched with the air outlet of the blower.
3. The multistage air distribution and screening device as claimed in claim 1, wherein the end of the air separation channel (3) far away from the feeding port (4) is in an arc structure, and the bottom of the arc end is connected with the feeding port of the re-removing mechanism (5).
4. The multistage winnowing screening device according to claim 3, characterized in that the re-removing mechanism (5) comprises a re-removing box (51), the bottom of the re-removing box (51) is of a funnel structure, and the fine sand outlet (7) is arranged at the bottom end of the funnel structure of the re-removing box (51); the top of the heavy-load box (51) comprises a high-side top (52) and a low-side top (53), the high-side top (52) is connected with the air draft dust removal pipe (6), and the low-side top (53) is provided with a feeding hole.
5. The multi-stage air distribution screening device according to claim 1, characterized in that the screening mechanism (9) is a vibrating screen.
6. The multistage winnowing screening device according to claim 5, characterized in that said vibrating screen is arranged obliquely at the bottom of said housing (1) and said grit discharge outlet (10) is arranged at the lower end of said vibrating screen.
7. The multi-stage air distribution screen apparatus according to claim 6, wherein the medium sand conveying mechanism (11) is a screw conveyor, and the screw conveyor is disposed along an axial direction of the vibrating screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911172113.9A CN110899116A (en) | 2019-11-26 | 2019-11-26 | Multistage air distribution screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911172113.9A CN110899116A (en) | 2019-11-26 | 2019-11-26 | Multistage air distribution screening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110899116A true CN110899116A (en) | 2020-03-24 |
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ID=69819624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911172113.9A Pending CN110899116A (en) | 2019-11-26 | 2019-11-26 | Multistage air distribution screening device |
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| Country | Link |
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| CN (1) | CN110899116A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642713A (en) * | 2020-12-03 | 2021-04-13 | 安徽达晶建筑材料有限公司 | Machine-made sand incoming material distribution system |
| CN117505256A (en) * | 2024-01-06 | 2024-02-06 | 孝义市鼎润新材料科技有限公司 | A selection by winnowing screening machine for after haydite sand raw materials is broken |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR332894A (en) * | 1903-06-09 | 1903-11-10 | Jesse Thomas Burr | Method and apparatus for density sorting |
| GB120763A (en) * | 1917-11-19 | 1918-11-19 | George Fountaine Weare Hope | Improvements in and relating to Separators for Sand. |
| CN203526067U (en) * | 2013-09-29 | 2014-04-09 | 新疆宇鑫混凝土有限公司 | Concrete drying aggregate continuous multi-stage winnowing grading device |
| CN203540664U (en) * | 2013-07-13 | 2014-04-16 | 浙江双金机械集团股份有限公司 | Dustless machine manufactured natural sand manufacturing and separating system |
| CN108704849A (en) * | 2018-07-10 | 2018-10-26 | 成都广维重工科技有限公司 | A kind of emery dust piece-rate system |
| CN210995301U (en) * | 2019-11-26 | 2020-07-14 | 成都市玄戈自动化控制技术有限公司 | Multistage air distribution screening device |
-
2019
- 2019-11-26 CN CN201911172113.9A patent/CN110899116A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR332894A (en) * | 1903-06-09 | 1903-11-10 | Jesse Thomas Burr | Method and apparatus for density sorting |
| GB120763A (en) * | 1917-11-19 | 1918-11-19 | George Fountaine Weare Hope | Improvements in and relating to Separators for Sand. |
| CN203540664U (en) * | 2013-07-13 | 2014-04-16 | 浙江双金机械集团股份有限公司 | Dustless machine manufactured natural sand manufacturing and separating system |
| CN203526067U (en) * | 2013-09-29 | 2014-04-09 | 新疆宇鑫混凝土有限公司 | Concrete drying aggregate continuous multi-stage winnowing grading device |
| CN108704849A (en) * | 2018-07-10 | 2018-10-26 | 成都广维重工科技有限公司 | A kind of emery dust piece-rate system |
| CN210995301U (en) * | 2019-11-26 | 2020-07-14 | 成都市玄戈自动化控制技术有限公司 | Multistage air distribution screening device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642713A (en) * | 2020-12-03 | 2021-04-13 | 安徽达晶建筑材料有限公司 | Machine-made sand incoming material distribution system |
| CN117505256A (en) * | 2024-01-06 | 2024-02-06 | 孝义市鼎润新材料科技有限公司 | A selection by winnowing screening machine for after haydite sand raw materials is broken |
| CN117505256B (en) * | 2024-01-06 | 2024-03-22 | 孝义市鼎润新材料科技有限公司 | A selection by winnowing screening machine for after haydite sand raw materials is broken |
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