CN219233124U - Air sieving machine - Google Patents
Air sieving machine Download PDFInfo
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- CN219233124U CN219233124U CN202320659590.3U CN202320659590U CN219233124U CN 219233124 U CN219233124 U CN 219233124U CN 202320659590 U CN202320659590 U CN 202320659590U CN 219233124 U CN219233124 U CN 219233124U
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- air
- screen
- selecting chamber
- rotating shaft
- powder selecting
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- 238000007873 sieving Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 102
- 239000000843 powder Substances 0.000 claims abstract description 65
- 239000002245 particle Substances 0.000 claims abstract description 52
- 239000000428 dust Substances 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims abstract description 3
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 238000012216 screening Methods 0.000 abstract description 11
- 230000003749 cleanliness Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 11
- 239000004576 sand Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 239000011362 coarse particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to an air screening machine, wherein one end of the top of a powder selecting chamber is provided with a feed inlet, the other end of the top of the powder selecting chamber is provided with a dust removing opening, and the dust removing opening is externally connected with a dust removing mechanism; the bottom of the powder selecting chamber is provided with a coarse material discharging port and a finished product material discharging port; still be equipped with the air-blower, the air-blower induced air pipeline links to selection powder room feed inlet downside, and the air current of induced air pipeline blowing selection powder room is crossing in the horizontal air current of feed inlet unloading, and this air current blows to dust removal mouth side, its characterized in that: a large material chute is arranged below the feeding port and connected with the coarse material discharge port; a screen is arranged in the middle of the powder selecting chamber on the downwind side of the large material chute; the screen mesh is obliquely arranged, the screen material is fed into the coarse material discharge port, and the screen material is fed into the finished material discharge port; a small material blanking interval is arranged between the upper end of the screen and the shell of the powder selecting chamber; the large materials and the small particles do not participate in screening, so that the powder screening efficiency is greatly improved; the classification idea of the utility model utilizes strong air flow, so that the carried-out micro powder has larger ratio and the cleanliness of the finished product material is higher.
Description
Technical Field
The utility model belongs to the technical field of material sorting equipment, and particularly relates to an air sieving machine.
Background
The sand making machine pulverizes stones, and the sand making machine discharges a mixture, wherein the mixture contains powder, small crushed sand and large stones which are not completely crushed. The qualified machine-made sand required in the engineering is generally 0.15MM to 4.75MM particles, so the mixture discharged from the sand making machine is required to be classified by a separation device, and the finished sand is separated from the mixture.
The actual discharge of the sand making machine contains 60 percent of gravel with larger granularity and 10 percent of micropowder, and the yield is only about 30 percent. In the prior art, aiming at the technical proposal of removing dust contained in the mixture, an air separation method is adopted, a dust removing pipe is arranged on a separation box and is connected with a draught fan, the draught fan blows air to the material, and the dust removing pipe sucks air outwards, so that fine dust is discharged out of the separation box through air flow; the granular materials are generally classified by adopting multistage vibrating screens, and a plurality of screens with different pore diameters are arranged in a separation box to separate the granules with the particle diameter of more than 4.75MM and the granules with the particle diameter of less than 0.15 MM.
The existing classifier has the advantages that besides independent dust discharge, large particles and small particles are classified through a screen, the large particle materials occupy a larger proportion and are screened together as described in the classification of the mixture, and the efficiency is extremely low when the large materials are filtered in most of the time; the small particles are very likely to clog the screen, hampering the function of the screen, and also being an important factor in reducing the screening efficiency.
Disclosure of Invention
The utility model aims to solve the problems and provides screening and powder selecting equipment for improving screening and powder selecting efficiency and improving machine-made sand grading.
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:
an air sieving machine, wherein one end of the top of a powder selecting chamber is provided with a feed inlet, the other end is provided with a dust removing opening, and the dust removing opening is externally connected with a dust removing mechanism; the bottom of the powder selecting chamber is provided with a coarse material discharging port and a finished product material discharging port; still be equipped with the air-blower, the air-blower induced air pipeline links to selection powder room feed inlet downside, and the air current of induced air pipeline blowing selection powder room is crossing in the horizontal air current of feed inlet unloading, and this air current blows to dust removal mouth side, its characterized in that: a large material chute is arranged below the feeding port and connected with the coarse material discharge port; a screen is arranged in the middle of the powder selecting chamber on the downwind side of the large material chute; the screen mesh is obliquely arranged, the screen material is fed into the coarse material discharge port, and the screen material is fed into the finished material discharge port; a small material blanking interval is arranged between the upper end of the screen and the shell of the powder selecting chamber.
Compared with the prior art, the utility model adopting the technical scheme has the beneficial effects that:
according to the utility model, according to the difference of the pushing effect of the air flow on the particles with different sizes, the air flow is used for dispersing the mixture according to the sizes of the particles, the dispersed and fallen materials are respectively treated, and the unqualified large materials and the small particles do not participate in screening, so that the powder screening efficiency is greatly improved; the classification idea of the utility model utilizes strong air flow, so that the carried-out micro powder has larger ratio and the cleanliness of the finished product material is higher.
Preferably, the utility model further adopts the technical scheme that:
a first adjusting plate is arranged at one side of the large material chute upper opening, which is close to the screen mesh, and is arranged in the powder selecting chamber through a first rotating shaft, and the first adjusting plate rotates by taking the first rotating shaft as a center, so that the relative included angle between the first adjusting plate and the blanking surface is adjusted; the upper end of the screen is provided with a second adjusting plate, the second adjusting plate is arranged in the powder selecting chamber through a second rotating shaft, and the second adjusting plate rotates by taking the second rotating shaft as a center, so that the relative included angle between the second adjusting plate and the screen is adjusted.
The advantages obtained by the scheme are as follows: according to the scheme, the material quantity falling on the screen is controlled through the adjusting plate, so that the grading of the finished product material can be conveniently and accurately adjusted.
The lower sides of the first adjusting plate and the second adjusting plate are fixedly connected with the first rotating shaft and the second rotating shaft, and the upper sides are free ends; the two ends of the first rotating shaft and the second rotating shaft are connected with the shell of the powder selecting chamber, the shaft ends of one side of the first rotating shaft and the second rotating shaft extending out of the shell of the powder selecting chamber are respectively fixedly connected with a crank arm swinging rod, the pin shaft at the other end of the crank arm swinging rod is connected with the piston end of an electric push rod, the electric push rod is fixedly arranged at the outer side of the shell of the powder selecting chamber through a fixing seat, and the electric push rod stretches to drive the first rotating shaft or the second rotating shaft to rotate; the expansion of the electric push rod, the blower and the dust removing mechanism are all connected with the control system.
The advantages obtained by the scheme are as follows: the scheme uses the electric push rod and the crank arm to drive the adjusting plate to rotate, so that the cost is low, the control stability is good, and the control is easy.
A striking plate is arranged between the feeding port and the dust removing port, and the lower end of the striking plate deviates along the air flow of the blower in the direction away from the feeding port.
The advantages obtained by the scheme are as follows: when the mixture falls, dust adheres to the particle surface, and when the particle is pushed by wind, the strong vibration that produces on striking the striking board makes the dust drop from the particle surface, then is carried to corresponding position by the wind respectively, effectively guarantees the removal effect of dust.
The dust removing mechanism is larger than the air inlet quantity of the blower from the powder selecting chamber to the outside, and at least one air supplementing port is arranged at the lower part of the shell of the small material blanking side of the powder selecting chamber.
The advantages obtained by the scheme are as follows: air enters the powder selecting chamber through the air supplementing opening, and the air is sucked by the suction fan to form upward air flow which is reverse to the direction of the small particle materials, so that micro powder falling down to the lower part of the machine body is driven upwards, and particles are further scrubbed.
The bottom of the powder selecting chamber is also provided with a small particle finished product discharge port, and the materials falling at intervals of small material blanking fall into the small particle finished product discharge port.
The advantages obtained by the scheme are as follows: according to the scheme, the sorting machine discharges two materials with different gradations, and the requirements are further finely corresponding.
Drawings
FIG. 1 is a block diagram of an air screen of the present utility model.
FIG. 2 is a schematic view of the airflow dispersion and drop of the material according to the present utility model.
Fig. 3 is a mounting structure view of the adjusting plate of the present utility model.
Fig. 4 is a side view of the mounting structure of the adjusting plate of the present utility model.
In the figure: 1. a powder selecting chamber; 2. a dust removal port; 3. a striking plate; 4. a feed inlet; 5. an induced draft channel; 6. a blower; 7. a large material chute; 8. coarse material discharge; 9. a finished product material discharging port; 10. air supplementing port; 11. a screen; 12. small material blanking intervals; 13. a second adjusting plate; 13-1, a second rotating shaft; 14. a first adjustment plate; 15. an electric push rod; 16. a fixing seat; 17. crank arm swing rod; 18. and a pin shaft.
Detailed Description
The utility model is further described below in connection with the following examples which are provided for the purpose of better understanding of the present utility model and are, therefore, not to be construed as limiting the scope of the utility model.
Referring to fig. 1 to 4, the utility model provides an air screening machine, which comprises a powder selecting chamber 1, wherein the top of the powder selecting chamber 1 is provided with a feed inlet 4 and a dust removing opening 2, the bottom of the powder selecting chamber is provided with a discharge opening, and a screen 11 is arranged in the powder selecting chamber.
According to the utility model, the vibrating feeder and the horizontal distributor are adopted for feeding conditioning, the vibrating feeder is provided with an inclined material guide plate, the material guide plate is also provided with a vibrating motor, after the materials are primarily conditioned by the vibrating feeder, fine powder and small particles are positioned at the lower layer of the materials, large materials are positioned at the upper layer of the materials, and the large particles roll down more rapidly under the vibration action of the material guide plate. The horizontal spreader spreads the material so that the material entering the powder selecting chamber 1 through the feed inlet 4 is a thin blanking surface in the shape of a door curtain.
The air blower 6 provides winnowing air flow, the air-inducing pipeline 5 of the air blower 6 is connected with the powder selecting chamber 1 and is positioned at the lower side of the feeding port 4, and provides horizontal air flow, the air flow is blown from the side of the feeding port 4 to the side of the dust removing port 2, the air blower 6 controls the air quantity and the wind force of the winnowing air flow through the frequency converter, the air flow acts on a curtain material surface, and micro powder in the material is directly discharged under the combined action of the air blower 6 and the dust removing mechanism. Meanwhile, under the action of the air flow, particles with different sizes are pushed by the air flow, and the smaller particles are more far away from the feeding port 4 transversely and are more close to the dust removal port 2 side.
A large material chute 7 is arranged below the feed inlet 4, and the large material chute 7 is connected with a coarse material discharge opening 8; a screen mesh 11 is arranged on the downwind side of the large material chute 7 in the middle part in the powder selecting chamber 1, the lower end of the screen mesh 11 is connected with the coarse material discharge port 8, and the coarse material discharge port 8 is filled with the screen material; a finished product discharge port 9 is arranged below the screen mesh 11, and the screen is fed into the finished product discharge port 9; a small material blanking interval 12 is arranged between the upper end of the screen 11 and the shell of the powder selecting chamber 1.
The grading principle of the air sieving machine for mixing is as follows: when coarse particles with unqualified particle sizes fall into the discharging opening, the coarse particles are slightly or not influenced by air flow, fall into the large material chute 7 in a straight line under the action of gravity, and are guided to the coarse material discharging opening 8 through the large material chute 7. The medium and small particle materials drop in a parabolic way under the action of the air flow, and the farther the small particles are thrown by the air flow, the medium particles drop on the screen 11, the small particles are thrown beyond the range of the screen 11, and the small particles drop from the small material blanking interval 12.
Further, a first adjusting plate 14 is arranged at the upper opening of the large material chute 7 and close to one side of the screen mesh 11, the first adjusting plate 14 is arranged in the powder selecting chamber 1 through a first rotating shaft, and the first adjusting plate 14 rotates around the first rotating shaft, so that the relative included angle between the first adjusting plate 14 and the blanking surface is adjusted; the upper end of the screen 11 is provided with a second adjusting plate 13, the second adjusting plate 13 is arranged in the powder selecting chamber 1 through a second rotating shaft, and the second adjusting plate 13 rotates by taking the second rotating shaft as a center, so that the relative included angle with the screen 11 is adjusted.
Specifically, the mounting transmission structure of the first adjusting plate 14 and the second adjusting plate 13 is as follows: the lower sides of the first adjusting plate 14 and the second adjusting plate 13 are fixedly connected with the first rotating shaft and the second rotating shaft 13-1, and the upper sides are free ends; the two ends of the first rotating shaft and the second rotating shaft 13-1 are connected with the shell of the powder selecting chamber 1, one side shaft ends of the first rotating shaft and the second rotating shaft 13-1 extending out of the shell of the powder selecting chamber 1 are respectively fixedly connected with a crank arm swing rod 17, a pin shaft 18 at the other end of the crank arm swing rod 17 is connected with the piston end of an electric push rod 15, the electric push rod 15 is fixedly arranged at the outer side of the shell of the powder selecting chamber 1 through a fixed seat 16, and the electric push rod 15 stretches to drive the first rotating shaft or the second rotating shaft 13-1 to rotate; the expansion and contraction of the electric push rod 15, the blower 6 and the dust removing mechanism are all connected with a control system.
The air flow disperses the different particle sizes out of the screen 11, and the change in the far and near particle sizes is blurred. But the screening of the screen 11 is also fuzzy classification, such as a screen with a mesh opening of 0.32.36MM, and the finished product machine-made sand undersize material in the building sand standard contains 70% -92% and 75% of particles with a particle diameter of 0.32.36MM-80% -3025% of particles with a particle diameter of more than 2.36mm, which belongs to the qualified screening result (refer to the building sand standard of GB 14684-2011). The large particles, the medium particles and the small particles are coarsely dispersed by utilizing air, the materials are gradually reduced from left to right, the grading boundary line between the coarse materials and the finished materials is not clear, the grading of the specific finished materials is also adjusted within a certain range according to specific requirements, so that the boundary between the large particles and the medium particles can be controlled by the first adjusting plate 14, the first adjusting plate 14 rotates towards the direction of the large material chute 7, the coarse materials are reduced, and the materials falling onto the screen 11 are increased; the second adjusting plate 13 is the same. The grading of the finished product materials is adjusted through the first adjusting plate 14 and the second adjusting plate 13.
A striking plate 3 is arranged between the feed inlet 4 and the dust removal port 2, and the lower end of the striking plate 3 deflects along the air flow of the blower 6 in the direction away from the feed inlet 4. Referring to fig. 2, the striking plate 3 may be a V-shaped plate, the top is fixed on the top wall of the powder selecting chamber 1, when the mixture falls, dust adheres to the surface of the particles, when the particles are pushed by wind, the dust falls off from the surface of the particles due to strong vibration generated by striking the striking plate 3, and then the dust is respectively carried to corresponding positions by wind, so that the dust removing effect is effectively ensured.
The dust removing mechanism sucks air from the powder selecting chamber 1 outwards by an amount larger than the air intake of the blower 6, and at least one air compensating opening 10 is arranged at the lower part of the shell of the small material blanking side of the powder selecting chamber 1. Air enters the powder selecting chamber 1 through the air supplementing port 10, and the air is sucked by the suction fan to form upward air flow which is reverse to the direction of the small particle materials, so that the micro powder falling down to the lower part of the machine body is driven upwards to scrub the particles further.
The fine materials falling through the small material blanking interval 12 can be mixed into the screen blanking and discharged from the finished material discharging port 9, and a fine material discharging port can be additionally arranged for separate discharging.
The utility model is not limited to one layer of screen in the drawing, multiple layers of screens can be designed according to grading requirements, the pore diameter of the lower layer of screen is one grade smaller than that of the upper layer of screen, and each layer of screen is provided with a material outlet independently.
The method for sorting dry granular materials by the air sorter comprises the following steps: s1: paving and pushing the material into thin material to enable the thin material to be a curtain type material surface to drop vertically; s2: feeding horizontal airflow perpendicular to the curtain material surface to horizontally disperse the mixture according to the particle size, and enabling the mixture to fall in a parabolic manner; s3: and a screen is arranged in the throwing range of the medium-sized particles, coarse particles on the near wind side of the screen are separated and discharged independently, and tiny particles on the far wind side of the screen are separated and discharged, so that the medium-sized particles are classified into larger particles and smaller particles by the screen.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the scope of the claims, but rather to cover all equivalent modifications within the scope of the present utility model as defined by the appended claims.
Claims (6)
1. An air sieving machine, wherein one end of the top of a powder selecting chamber is provided with a feed inlet, the other end is provided with a dust removing opening, and the dust removing opening is externally connected with a dust removing mechanism; the bottom of the powder selecting chamber is provided with a coarse material discharging port and a finished product material discharging port; still be equipped with the air-blower, the air-blower induced air pipeline links to selection powder room feed inlet downside, and the air current of induced air pipeline blowing selection powder room is crossing in the horizontal air current of feed inlet unloading, and this air current blows to dust removal mouth side, its characterized in that: a large material chute is arranged below the feeding port and connected with the coarse material discharge port; a screen is arranged in the middle of the powder selecting chamber on the downwind side of the large material chute; the screen mesh is obliquely arranged, the screen material is fed into the coarse material discharge port, and the screen material is fed into the finished material discharge port; a small material blanking interval is arranged between the upper end of the screen and the shell of the powder selecting chamber.
2. An air screen according to claim 1, wherein: a first adjusting plate is arranged at one side of the large material chute upper opening, which is close to the screen mesh, and is arranged in the powder selecting chamber through a first rotating shaft, and the first adjusting plate rotates by taking the first rotating shaft as a center, so that the relative included angle between the first adjusting plate and the blanking surface is adjusted; the upper end of the screen is provided with a second adjusting plate, the second adjusting plate is arranged in the powder selecting chamber through a second rotating shaft, and the second adjusting plate rotates by taking the second rotating shaft as a center, so that the relative included angle between the second adjusting plate and the screen is adjusted.
3. An air screen according to claim 2, wherein: the lower sides of the first adjusting plate and the second adjusting plate are fixedly connected with the first rotating shaft and the second rotating shaft, and the upper sides are free ends; the two ends of the first rotating shaft and the second rotating shaft are connected with the shell of the powder selecting chamber, the shaft ends of one side of the first rotating shaft and the second rotating shaft extending out of the shell of the powder selecting chamber are respectively fixedly connected with a crank arm swinging rod, the pin shaft at the other end of the crank arm swinging rod is connected with the piston end of an electric push rod, the electric push rod is fixedly arranged at the outer side of the shell of the powder selecting chamber through a fixing seat, and the electric push rod stretches to drive the first rotating shaft or the second rotating shaft to rotate; the expansion of the electric push rod, the blower and the dust removing mechanism are all connected with the control system.
4. An air screen according to claim 3, wherein: a striking plate is arranged between the feeding port and the dust removing port, and the lower end of the striking plate deviates along the air flow of the blower in the direction away from the feeding port.
5. An air screen according to claim 3, wherein: the dust removing mechanism is larger than the air inlet quantity of the blower from the powder selecting chamber to the outside, and at least one air supplementing port is arranged at the lower part of the shell of the small material blanking side of the powder selecting chamber.
6. An air screen according to claim 1, wherein: the bottom of the powder selecting chamber is also provided with a small particle finished product discharge port, and the materials falling at intervals of small material blanking fall into the small particle finished product discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320659590.3U CN219233124U (en) | 2023-03-30 | 2023-03-30 | Air sieving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320659590.3U CN219233124U (en) | 2023-03-30 | 2023-03-30 | Air sieving machine |
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| Publication Number | Publication Date |
|---|---|
| CN219233124U true CN219233124U (en) | 2023-06-23 |
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ID=86845251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320659590.3U Active CN219233124U (en) | 2023-03-30 | 2023-03-30 | Air sieving machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219233124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899879A (en) * | 2023-08-28 | 2023-10-20 | 广东磊蒙智能装备集团有限公司 | Fineness modulus adjusting device |
-
2023
- 2023-03-30 CN CN202320659590.3U patent/CN219233124U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899879A (en) * | 2023-08-28 | 2023-10-20 | 广东磊蒙智能装备集团有限公司 | Fineness modulus adjusting device |
| CN116899879B (en) * | 2023-08-28 | 2024-03-15 | 广东磊蒙智能装备集团有限公司 | Fineness modulus adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Air screening machine Granted publication date: 20230623 Pledgee: Tangshan Fengrun District Branch of China Postal Savings Bank Co.,Ltd. Pledgor: Jinlu (Tangshan) Intelligent Equipment Co.,Ltd. Registration number: Y2024980033997 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |