CN113894041B - Machine-made sand winnowing equipment and controllable winnowing method - Google Patents
Machine-made sand winnowing equipment and controllable winnowing method Download PDFInfo
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- CN113894041B CN113894041B CN202111232907.7A CN202111232907A CN113894041B CN 113894041 B CN113894041 B CN 113894041B CN 202111232907 A CN202111232907 A CN 202111232907A CN 113894041 B CN113894041 B CN 113894041B
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- 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
- B07B7/06—Selective separation of solid materials carried by, or dispersed in, gas currents by impingement against sieves
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- 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
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses machine-made sand winnowing equipment and a controllable winnowing method, and relates to the technical field of machine-made sand processing devices. The machine-made sand winnowing equipment comprises a conveying roller, a sleeve, a workbench, a first sealing bearing, a second sealing bearing, a feeding bent pipe, a feeding hopper, a connecting rod, a third sealing bearing, a discharging bent pipe, a discharging pipe, a receiving container, a spiral conveying groove, a dust filtering hole, an exhaust pipe, a dust pumping fan and a driving mechanism. The controllable winnowing method comprises the following steps: step 1, acquiring related parameters through a test; and step 2, performing machine-made sand winnowing according to the obtained parameters. The invention can perform standardized control on the winnowing quality, can establish a parameter table for winnowing machine-made sand raw materials with different stone powder weight ratios after winnowing parameters are obtained through experiments, and can perform machine-made sand winnowing according to the parameter table, thereby achieving standardized control on the machine-made sand winnowing quality and also achieving standardized control on machine-made sand winnowing operation.
Description
Technical Field
The invention relates to the technical field of machine-made sand processing devices, in particular to machine-made sand winnowing equipment and a controllable winnowing method.
Background
The machine-made sand is sand processed by a sand making machine and other accessory equipment, the finished product is more regular, sand with different rules and sizes can be processed according to different process requirements, daily requirements can be met, in some engineering construction processes, the machine-made sand is used for replacing natural river sand, but the machine-made sand contains a certain amount of stone powder, the construction quality can be influenced, and therefore the stone powder in the machine-made sand needs to be removed by using winnowing dust removal equipment.
At present, the mode of winnowing equipment mainly blows stone powder contained in machine-made sand input from a feeding port through a blower in the falling process, so that the effect of screening the machine-made sand is achieved. However, this air separation method has the following drawbacks:
1. the effect of winnowing depends on factors such as the dead time of machine-made sand, the input amount of machine-made sand and the wind speed of a fan, and the factors are difficult to effectively control, for example, the dead time of machine-made sand is very short, the machine-made sand always falls on the ground very quickly after input, the fan is required to blow away all the contained stone powder at the moment to a certain degree, for example, when the input amount of machine-made sand is large, the effect of winnowing can be greatly discounted because the strength of the fan is insufficient, and for example, if the wind speed or wind power of the fan is too large, the machine-made sand and the stone powder can be blown away, and if the wind speed or wind power of the fan is too small, the effect of winnowing can not be achieved.
2. In the prior patent documents, the scheme for prolonging the dead time of the machine-made sand to improve the winnowing effect is difficult to find, and some documents disclose related technical schemes by controlling the input amount of the machine-made sand, such as a baffle plate is arranged to enable the machine-made sand to pass through a small gap, so that the winnowing effect can be improved, but the method is not suitable for winnowing a large amount of machine-made sand; regarding the wind speed and wind power regulation of the fan, in the prior patent literature, the wind speed or wind power of the fan is too high to cause the machine-made sand to be directly blown out of the air outlet, so that raw materials are wasted and further wind separation cannot be performed, and the way for improving the wind separation effect is obviously limited.
3. Due to the unreliability of the above factors, the winnowing quality of the machine-made sand is difficult to be effectively controlled, and a standardized means for controlling the winnowing quality of the machine-made sand is not available in the prior art.
Disclosure of Invention
The invention provides machine-made sand winnowing equipment, and aims to solve the problems in the prior art.
In order to solve the problems, the technical scheme of the invention is as follows:
the machine-made sand winnowing equipment comprises a conveying roller and a sleeve sleeved outside the conveying roller, wherein the sleeve is fixed on the upper surface of a workbench through a fixing seat, two ends of the inner surface of the sleeve are rotationally connected with the outer surface of the conveying roller through a first sealing bearing, and one end of the conveying roller, which is positioned outside the sleeve, is also connected with a feeding bent pipe through a second sealing bearing;
the feeding pipe is fixedly connected with a feeding hopper at the top end of the feeding pipe, the feeding pipe is fixedly connected with the outer surface of the sleeve through a connecting rod, the other end of the conveying roller, which is positioned at the outer side of the sleeve, is connected with a discharging pipe through a third sealing bearing, and the bottom end of the discharging pipe is connected with the discharging pipe;
the discharging pipe bottom be connected with the receipts material container, the internal surface that is located the conveying cylinder between the 2 first sealed bearings of sleeve is equipped with spiral conveyer trough around the axis, the tank bottom evenly distributed of conveyer trough have a plurality of dust filtering holes, the sleeve surface still be connected with the exhaust column, the exhaust column be equipped with the dust extraction fan, the conveying cylinder rotate through the actuating mechanism who sets up in the workstation upper surface, the workstation upper surface still be equipped with actuating mechanism start button and dust extraction fan start button.
Preferably: the driving mechanism comprises a motor fixedly arranged on the upper surface of the workbench, an output shaft of the motor is fixedly connected with a driving gear, the outer surface of the end part of the conveying roller, which is positioned outside the sleeve, is also coaxially and fixedly provided with a driven gear, and the driving gear is meshed with the driven gear.
Preferably: the section of the groove wall of the conveying groove is arc-shaped, the longitudinal section of the dust filtering hole is trapezoid, and the diameter of the outer side end of the dust filtering hole is larger than that of the inner side end of the dust filtering hole.
Preferably: the outer surface of the conveying roller is positioned between the 2 first sealing bearings, a plurality of brushes are uniformly distributed at positions opposite to the groove wall, and the bristles of the brushes are contacted with the inner surface of the sleeve.
Preferably: the side wall of the sleeve, which is close to one side of the feed hopper, is also provided with an observation port, and the observation port is provided with a sealing cover.
Preferably: the machine-made sand controllable winnowing method comprises the following steps of:
step 1, acquiring related parameters through a test;
and step 2, performing machine-made sand winnowing according to the obtained parameters.
Preferably: the step 1 comprises the following specific steps:
the method comprises the following steps of 1, calculating the stone powder weight ratio of raw material machine-made sand in a weighing and filtering mode;
and 5, repeating the step 4, and determining the corresponding feeding speed, the power of the dust extraction fan and the rotating speed of the motor as winnowing parameters according to the weight ratio of the sand powder of the machine after winnowing.
Preferably: the step 1 also comprises a specific step 6, namely, on the premise of a certain feeding speed, the power of the dust extraction fan and the rotating speed of the motor, the length of the dust filtering hole section of the conveying roller is changed, and the optimum length parameter under the condition is screened through the stone powder weight ratio of the machine-made sand after winnowing.
The machine-made sand winnowing equipment and the controllable winnowing method have the following beneficial effects:
1. the invention can control the dead time of the machine-made sand, thereby ensuring the winnowing effect of the machine-made sand.
2. The invention can fully exert the wind speed and wind power of the dust extraction fan, improves the winnowing quality and the winnowing efficiency under the condition of greatly improving the wind speed and wind power of the fan, and simultaneously can not cause the waste of machine-made sand overflow.
3. The input amount of the raw material machine-made sand can meet the requirement of large-scale winnowing, and the winnowing effect is improved without small input.
4. The invention can perform standardized control on the winnowing quality, can establish a parameter table for winnowing machine-made sand raw materials with different stone powder weight ratios after winnowing parameters are obtained through experiments, and can perform machine-made sand winnowing according to the parameter table, thereby achieving standardized control on the machine-made sand winnowing quality and also achieving standardized control on machine-made sand winnowing operation.
5. The invention provides a controllable winnowing mode, which not only can effectively control the winnowing quality of machine-made sand, but also can reduce the labor amount of workers and improve the winnowing efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of the sleeve of the present invention in section;
FIG. 3 is a schematic illustration of the invention further with the transport cylinder broken away;
1: workstation, 2: sleeve, 3: viewing port, 4: exhaust column, 5: dust extraction fan, 6: fixing base, 7: connecting rod, 8: conveying roller, 9: feed hopper, 10: a motor, 11: driving gear, 12: driven gear, 13: receiving container, 14: feeding elbow, 15: discharge elbow, 16: discharge pipe, 17: dust filtering holes, 18: a brush; 19: first sealed bearing, 20: groove wall, 21: a conveying groove.
Detailed Description
The following detailed description of the embodiments of the present invention in a stepwise manner is provided merely as a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present invention should be included in the scope of the present invention.
In the description of the present invention, it should be noted that, the positional or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, and specific orientation configuration and operation, and thus should not be construed as limiting the present invention.
Example 1,
1-3, including conveying cylinder 8, sleeve 2 of cover outside conveying cylinder 8, sleeve 2 be fixed in the upper surface of workstation 1 through fixing base 6, sleeve 2's internal surface both ends rotate through first sealed bearing 19 and conveying cylinder's surface and be connected with, conveying cylinder be located the one end in the sleeve outside and still be connected with feeding return bend 14 through the second sealed bearing, feeding return bend 14 top fixedly connected with feeder hopper 9, feeding return bend 14 pass through connecting rod 7 and sleeve 2's surface fixed connection, conveying cylinder 8 be located sleeve 2's the other end be connected with ejection of compact return bend 15 through the third sealed bearing.
The discharging elbow bottom is connected with discharging pipe 16, discharging pipe bottom be connected with receiving container 13, the internal surface of the conveying cylinder between 2 first sealed bearings 19 that are located the sleeve is equipped with spiral conveyer trough 21 around the axis, the tank bottom evenly distributed of conveyer trough 21 have a plurality of dust filtering holes 17, the sleeve surface still be connected with exhaust column 4, exhaust column 4 be equipped with dust extraction fan 5, the conveying cylinder rotate through the actuating mechanism that sets up in the workstation upper surface, the workstation upper surface still be equipped with actuating mechanism start button and dust extraction fan start button.
As shown in fig. 1, the driving mechanism comprises a motor 10 fixedly arranged on the upper surface of the workbench 1, an output shaft of the motor 10 is fixedly connected with a driving gear 11, the outer surface of the end part of the conveying roller, which is positioned outside the sleeve, is also coaxially and fixedly provided with a driven gear 12, and the driving gear 11 is in meshed connection with the driven gear 12;
the section of the groove wall 20 of the conveying groove 21 is arc-shaped, so that raw materials can be conveniently guided into the conveying groove, the longitudinal section of the dust filtering hole 17 is trapezoid, and the diameter of the outer side end of the dust filtering hole 17 is larger than that of the inner side end, so that blockage is not easy to occur during dust filtering;
as shown in fig. 2, a plurality of brushes 18 are uniformly distributed on the outer surface of the conveying roller 8 and between the 2 first sealing bearings 19 and opposite to the groove wall 20, namely, the brushes are also spirally arranged, and the bristles of the brushes 18 are contacted with the inner surface of the sleeve;
as shown in fig. 1, the side wall of the sleeve, which is close to one side of the feed hopper, is also provided with an observation port 3, and the observation port 3 is provided with a sealing cover.
The principle of use of this embodiment:
raw material machine-made sand enters the conveying roller 8 through the feeding elbow pipe 14 and is conveyed to one side far away from the feeding hopper through the spiral conveying groove 21, the motor drives the conveying roller 8 to rotate in the conveying process, the machine-made sand is continuously carried up and thrown down according to self gravity, the emptying process is continuously repeated, and in the process, stone powder and the machine-made sand are separated; meanwhile, the dust extraction fan enables negative pressure to be generated in the sleeve 2, the negative pressure drives stone powder in the conveying roller 8 to be continuously discharged outside through the dust filtering holes 17 and extracted by the dust extraction fan, machine-made sand can not overflow along with the stone powder even if the power of the dust extraction fan is large due to the isolation effect of the conveying roller, and meanwhile, the stone powder is spread to the peripheral dust filtering holes and passes through the dust filtering holes due to the fact that the dust filtering holes are distributed around the axis of the conveying roller.
The wind direction of the fan is single in a traditional wind separation mode, the wind direction of the fan is unbalanced, and the wind separation efficiency is greatly reduced at the position where the wind force is not enough; by continuously rotating the conveying roller, the machine-made sand is lifted in the conveying groove and falls down, the machine-made sand is repeated continuously, and the length of the conveying roller is known, and the size of the conveying groove is known, so that the dead time of the machine-made sand is controllable, the sufficient dead time ensures the quality of machine-made sand winnowing, and meanwhile, the high-power (compared with the power of a common winnowing fan) dust pumping fan can improve the winnowing efficiency. When the stone powder is separated from the dust filtering hole and enters the sleeve, the stone powder cannot be deposited in the sleeve due to the stirring of the hairbrush and can be continuously extracted by the dust extraction fan. Of course, if the equipment is used for a long time, when maintenance is needed, the back blowing can be carried out by connecting a fan at the exhaust pipe 4, and dust is pumped out of the auxiliary feeding hopper for cleaning.
According to the quantity of machine-made sand of processing, can select the conveying cylinder of different diameters, for large batch selection by winnowing, the diameter of conveying cylinder can be 1m, can improve the feed rate like this in step, improves selection by winnowing efficiency.
The motor used in the invention can be a constant-speed motor or a speed regulating motor, the latter realizes the effect of raising sand in the conveying roller through interval speed reduction, and the former enables machine-made sand to turn over and raise dust in the conveying roller through constant-speed rotation.
EXAMPLE 2,
As shown in fig. 1-3:
a controllable winnowing method comprises the following steps:
step 1, acquiring related parameters through a test;
the step 1 comprises the following specific steps:
the method comprises the following steps of 1, calculating the stone powder weight ratio of raw material machine-made sand in a weighing and filtering mode, namely weighing the stone powder after filtering, and calculating the weight percentage of the stone powder to the total weight;
the step 1 also comprises a specific step 6, namely, on the premise of a certain feeding speed, the power of the dust extraction fan and the rotating speed of the motor, the length of the dust filtering hole section of the conveying roller is changed, and the optimum length parameter under the condition is screened through the stone powder weight ratio of the machine-made sand after winnowing.
The working principle of the embodiment is as follows:
through the test of the step 1, the air separation parameters required by the air separation of the raw material machine-made sand with a certain stone powder weight ratio into the machine-made sand with a preset stone powder weight ratio, namely the feeding speed of a feeding hopper, the power of a dust extraction fan and the rotating speed of a motor, can also comprise the length of a dust filtering hole section of a conveying roller as parameters, and the air separation quality requirement can be met by the air separation machine-made sand on the premise of the air separation parameters, so that the controllable air separation is realized.
Claims (4)
1. A controllable winnowing method is characterized in that: the machine-made sand winnowing equipment is used for winnowing, the machine-made sand winnowing equipment comprises a conveying roller and a sleeve sleeved outside the conveying roller, the sleeve is fixed on the upper surface of a workbench through a fixing seat, two ends of the inner surface of the sleeve are rotationally connected with the outer surface of the conveying roller through first sealing bearings, one end of the conveying roller, which is positioned outside the sleeve, is also connected with a feeding elbow through a second sealing bearing, the top end of the feeding elbow is fixedly connected with a feeding hopper, the feeding elbow is fixedly connected with the outer surface of the sleeve through a connecting rod, the other end of the conveying roller, which is positioned outside the sleeve, is connected with a discharging elbow through a third sealing bearing, the bottom end of the discharging elbow is connected with a receiving container, the inner surface of the conveying roller, which is positioned between the 2 first sealing bearings in the sleeve, is provided with spiral conveying grooves around an axis, dust filtering holes are uniformly distributed at the bottom of the conveying grooves, the outer surface of the sleeve is also connected with an exhaust pipe, the exhaust pipe is provided with a dust blower, the conveying roller is fixedly connected with a discharging elbow through a driving mechanism which is arranged on the upper surface of the workbench, and the driving mechanism is further provided with a dust starting button on the surface of the workbench. The driving mechanism comprises a motor fixedly arranged on the upper surface of the workbench, an output shaft of the motor is fixedly connected with a driving gear, a driven gear is coaxially and fixedly arranged on the outer surface of the end part of the conveying roller, which is positioned outside the sleeve, and the driving gear is meshed with the driven gear;
the controllable winnowing method comprises the following steps:
step 1, acquiring related parameters through a test;
step 2, performing machine-made sand winnowing according to the obtained parameters;
the step 1 comprises the following specific steps:
the method comprises the following steps of 1.1, calculating the stone powder weight ratio of raw material machine-made sand in a weighing and filtering mode;
step 1.2, recording the charging speed of the corresponding raw material machine-made sand, the power of a dust extraction fan and the rotating speed of a motor in the air separation process;
step 1.3, calculating the stone powder weight ratio of the machine-made sand after winnowing in a weighing and filtering mode;
step 1.4, changing the feeding speed, the power of a dust extraction fan and the rotating speed of a motor, and re-recording the stone powder weight ratio of the machine-made sand after winnowing;
step 1.5, repeating the step 1.4, and determining the corresponding feeding speed, the power of the dust extraction fan and the rotating speed of the motor as winnowing parameters according to the weight ratio of the sand and stone powder of the winnowing machine to be obtained;
step 1.6, namely on the premise of a certain feeding speed, the power of a dust extraction fan and the rotating speed of a motor, changing the length of a dust filtering hole section of a conveying roller, and screening the most suitable length parameter under the condition by the stone powder weight ratio of machine-made sand after winnowing;
in the controllable winnowing method, the winnowing effect of the machine-made sand is ensured by controlling the dead time of the machine-made sand, the motor is a speed regulating motor, the speed regulating motor realizes the effect of lifting sand in the conveying roller through intermittent speed reduction, the machine-made sand is lifted in the conveying groove and falls down again by continuously rotating the conveying roller, and the dead time of the machine-made sand is controllable because the length of the conveying roller is known and the size of the conveying groove is known.
2. A controllable air separation method as claimed in claim 1, wherein: the section of the groove wall of the conveying groove is arc-shaped, the longitudinal section of the dust filtering hole is trapezoid, and the diameter of the outer side end of the dust filtering hole is larger than that of the inner side end of the dust filtering hole.
3. A controllable air separation method as claimed in claim 2, wherein: the outer surface of the conveying roller is positioned between the 2 first sealing bearings, a plurality of brushes are uniformly distributed at positions opposite to the groove wall, and the bristles of the brushes are contacted with the inner surface of the sleeve.
4. A method of controllable air separation as claimed in claim 3 wherein: the side wall of the sleeve, which is close to one side of the feed hopper, is also provided with an observation port, and the observation port is provided with a sealing cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111232907.7A CN113894041B (en) | 2021-10-22 | 2021-10-22 | Machine-made sand winnowing equipment and controllable winnowing method |
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| CN202111232907.7A CN113894041B (en) | 2021-10-22 | 2021-10-22 | Machine-made sand winnowing equipment and controllable winnowing method |
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| CN113894041A CN113894041A (en) | 2022-01-07 |
| CN113894041B true CN113894041B (en) | 2023-06-20 |
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| CN205518614U (en) * | 2016-01-27 | 2016-08-31 | 浙江双金机械集团股份有限公司 | Mechanism sand micronic dust selection by winnowing recovery system |
| CN208082830U (en) * | 2018-01-22 | 2018-11-13 | 安徽科技学院 | A kind of drum-type steel scrap exclusion device |
| CN110356788A (en) * | 2018-03-26 | 2019-10-22 | 天元（宜昌）新材料科技有限公司 | A kind of ammonium perchlorate product conveying device |
| CN208809746U (en) * | 2018-09-17 | 2019-05-03 | 上海华闵环境科技发展有限公司 | A kind of zeolite roller adsorption plant for VOCs processing |
| CN109277936A (en) * | 2018-11-01 | 2019-01-29 | 南京仁恒轴承滚动体有限公司 | A kind of needle roller corase grinding device and its application method |
| CN209680633U (en) * | 2018-12-28 | 2019-11-26 | 江西老庄主绿色农业发展有限公司 | A kind of capsicum dust removal machine |
| CN209886180U (en) * | 2019-01-17 | 2020-01-03 | 铜陵市卓翔铜材科技有限公司 | Thoroughly-separated roller winnowing device |
| CN210614288U (en) * | 2019-08-01 | 2020-05-26 | 河南省天宁种业有限公司 | Wheat seed processing dust collector |
| CN110508487A (en) * | 2019-08-28 | 2019-11-29 | 腾重(上海)机械科技有限公司 | Selection by winnowing separation equipment |
| CN212634282U (en) * | 2020-07-06 | 2021-03-02 | 青岛胶东机械制造有限公司 | Can clear up cylinder shakeout machine of collecting waste sand |
| CN212759567U (en) * | 2020-08-03 | 2021-03-23 | 江西景德中药股份有限公司 | Traditional chinese medicine preparation is with vibration screening dust shaker |
| CN113019922B (en) * | 2021-03-26 | 2023-03-17 | 南召县长和实业有限公司 | Winnowing pretreatment device for coarse whiting micro powder |
| CN215918203U (en) * | 2021-10-22 | 2022-03-01 | 中交第四公路工程局有限公司 | Mechanism sand wind selector |
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