CN104353608B - Whirling vibration screening machine - Google Patents

Whirling vibration screening machine Download PDF

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Publication number
CN104353608B
CN104353608B CN201410641747.5A CN201410641747A CN104353608B CN 104353608 B CN104353608 B CN 104353608B CN 201410641747 A CN201410641747 A CN 201410641747A CN 104353608 B CN104353608 B CN 104353608B
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China
Prior art keywords
screening
rotating shaft
screen box
screening machine
whirling vibration
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Active
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CN201410641747.5A
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Chinese (zh)
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CN104353608A (en
Inventor
朱宏政
刘令云
朱金波
闵凡飞
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Anhui University of Science and Technology
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Anhui University of Science and Technology
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Priority to CN201410641747.5A priority Critical patent/CN104353608B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4663Multi-layer screening surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/04Multiple deck screening devices comprising one or more superimposed screens

Abstract

The present invention relates to a kind of whirling vibration screening machine, this whirling vibration screening machine comprises the screen box of tubular, this screening machine also comprises: rotating mechanism, this rotating mechanism comprises the driving mechanism of rotating shaft and drive shaft rotation, described rotating shaft is arranged on elastic support rotationally, and described screen box is sheathed to be fixed in rotating shaft; Drive the vibrating mechanism of elastic support vibration; Multi-stage screening mechanism, comprise the multistage screening group from top to bottom all in skewed setting, this multi-stage screening group is fixedly installed between screen box and rotating shaft; Sieve diameter in multi-stage screening group reduces from top to bottom gradually; The downward-sloping end of screening group at different levels is respectively equipped with the discharge gate corresponding with oversize and screenings; The upper end of described screen box is provided with and material uniformly dispersing is being in the charging aperture of upper surface of screening group of highest position.Structure of the present invention is simple, can carry out multi-stage screening according to need of production, effectively enhances productivity and sieves the uniformity of particle, reducing production cost.

Description

Whirling vibration screening machine
Technical field
The present invention relates to solid material sieving machine, particularly relate to a kind of whirling vibration screening machine.
Background technology
Screening machine is the relative motion utilizing bulk granular material and compass screen surface, makes partial particulate through sieve aperture, the materials such as sand, gravel, rubble is divided into the vibration screening machinery equipment of different stage by granular size.In the process of screening, the particle that in material, granularity is less than screen size is fallen under sieve through compass screen surface, is called screenings.The particle that granularity is greater than screen size is stayed on sieve, is called oversize.Classifying screen is widely used in the screening of the materials such as all kinds of particle, little bulk, powder, wide adaptability, is the equipment that the stock gradings such as refractory material, shale, gangue, coal, cement, sandstone, grain, chemical fertilizer are conventional.
Existing oscillatory type sieving machine equipment involving vibrations axle, vibrating shaft is elasticly connected with sieve plate, sieve plate is equipped with vibrating motor, makes sieve plate produces shake, thus realize the screening of material by the vibrations of vibrating motor.Because the vibration frequency of vibrating motor is too frequent, there is the shortcoming that screening efficiency is low when sieving for the material that grain graininess difference is larger, and can only carry out single separation, production efficiency is low.Have a series of improvement that it is made though follow-up, multiple screening machine is such as set by belt conveyor parallel connection (Chinese patent literature CN103316842A), but its floor space is large, investment is large, causes production cost to increase; Be designed to the cylindric Multi-stage rotary classifying screen (Chinese patent literature CN202490762U) with multistage filtering district then because the Action of Gravity Field of material self adds the service load of motor; Having (Chinese patent literature CN103623995A) in the meticulous screening machine of multi-stage screening of complicated syndeton then can make maintenance cost increase, and increases cost of investment.
Therefore, under the prerequisite not affecting screening efficiency, how to provide a kind of structure simple, power consumption and the low multi-stage screening machine of maintenance cost become the problem that those skilled in the art need solution badly.
Summary of the invention
For above-mentioned deficiency, the technical problem to be solved in the present invention is to provide that a kind of screening efficiency is high, structure is simple, power consumption and the low whirling vibration screening machine of maintenance cost.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of whirling vibration screening machine, comprise the screen box of a tubular, this screening machine also comprises following part:
Rotating mechanism, this rotating mechanism comprises the driving mechanism of rotating shaft and drive shaft rotation, and described rotating shaft is arranged on elastic support rotationally, and described screen box is sheathed to be fixed in rotating shaft;
This screening machine also comprises the vibrating mechanism driving elastic support vibration;
Multi-stage screening mechanism, comprise the multistage screening group from top to bottom all in skewed setting, this multi-stage screening group is fixedly installed between screen box and rotating shaft; The screening group being in highest position tilts gradually obliquely near the laterally closer screen box side of rotating shaft one, and the incline direction of adjacent screening group is contrary; The least significant end place that other sieves except the screening group being in extreme lower position are grouped in its incline direction is provided with the discharging opening of oversize being discharged screen box and blanking port screenings being expelled to next stage screening group, and the least significant end place that the sieve being in extreme lower position is grouped in its incline direction is provided with the discharging opening of oversize and screenings being discharged respectively screen box; Sieve diameter in multi-stage screening group reduces from top to bottom gradually;
The upper end of described screen box is provided with and material uniformly dispersing is being in the charging aperture of upper surface of screening group of highest position.
Aforementioned multi-stage screening mechanism is n level, n be greater than 1 positive integer.
Preferably, any one-level screening group is formed by the meshed sieve plate of band and dividing plate, and described dividing plate is arranged on the below of the sieve plate of screening group at the same level, and the plate face of dividing plate parallels with the plate face of sieve plate.
Preferably, the upside of described charging aperture is provided with the ring-type water jet that the material to charging aperture place is sprayed water; Described ring-type water jet is sheathed to be fixed in rotating shaft.
Further, described sieve plate has the meshed screen cloth of band and screen frame (unit) to form, and described screen cloth is arranged on the upside of screen frame (unit).
Further, the angle of inclination of described sieve plate is 10 ° ~ 25 °.
Further, the upper surface towards sieve plate of described dividing plate is set to the shiny surface being convenient to supports for material down-sliding.
Further, described elastic support comprises resilient support assemblies and forms with rotating shaft the support be rotatably assorted for supporting revolving shaft, and described support is fixed on base by resilient support assemblies; Described screen box and support match to form and enclose multi-stage screening mechanism in enclosure space wherein.
Further, described vibrating mechanism comprises and is fixed on vibrating motor on base and offset assembly; Described offset assembly to be fixed on support and to be rotatably assorted with being configured to, and described vibrating motor is rotated by belt drives offset assembly.Further, described delivery plate just ring-type water jet is equipped with to top.
Further, described offset assembly comprises hollow cylinder and pouring weight; Described pouring weight is fixed in the interior sidewall surface of cylinder; Described vibrating motor is by rotary drum described in belt drives.
Further, the driving mechanism in described rotating mechanism comprises electric rotating machine; Described electric rotating machine is by belt drives axis of rotation.
Beneficial effect of the present invention is:
1) the sieve plate group, in the present invention is provided with multiple screen cloth with different pore size, can complete the screening of multiple granularity, thus can greatly enhance productivity.
Multi-stage screening group is fixedly installed between screen box and rotating shaft, and from top to bottom all in skewed setting, the first order screening group being wherein in highest position tilts gradually obliquely near the laterally closer screen box side of rotating shaft one, the incline direction of adjacent second level screening group is then contrary, tilts obliquely gradually near the laterally closer rotating shaft side of screen box one; In first order screening group, the oversize of sieve plate directly discharges the outside at screen box, in first order screening group, the screenings falling into dividing plate from sieve plate slides to the angled end of dividing plate under the process vibrated along with screen box, and falls on the sieve plate of second level screening group, enters second level screening process; The screenings falling into dividing plate in same second level screening group slides to dividing plate end and just in time falls on the sieve plate of third level screening group under the process vibrated along with screen box, enter third level screening process, then, glide continuously in this way, until complete the screening of multistage granularity.
This screening group being in highest position of the present invention tilts gradually obliquely near the laterally closer screen box side of rotating shaft one, and the multi-stage screening mechanism that adjacent screening group tilts in the opposite direction ensure that the continuity of screen box work, ensure that the high efficiency of screening.
2), when electric rotating machine is rotated by belt drives rotating shaft, rotating shaft drives screen box and multi-stage screening mechanism to rotate; Now vibrating motor is also rotated by belt drives cylinder, the interior sidewall surface of cylinder is installed with pouring weight, thus when vibrating motor is rotated by belt drives cylinder, pouring weight rotates together along with cylinder, cause beating or vibrating of cylinder, because cylinder is fixedly connected with support, therefore support also produces vibration thereupon; Thus, electric rotating machine and vibrating motor are worked in coordination, and make screen box and multi-stage screening mechanism produce vibration while rotation.
Said structure form of the present invention greatly reduces the service load of motor, reduces power consumption cost; In addition, because every one-level sieve plate all vibrates while rotation, thus material fully can be spread out along the upper surface of sieve plate, ensure that and the uniformity that screening materials carrying granularity distributes along sieve plate upper surface improve the efficiency of material screening.
2) screen cloth, in the present invention is covered with sieve aperture, adds material and contact with the effective of sieve aperture, further increase production efficiency; Be provided with screen frame (unit) below screen cloth, the structural strength of screen cloth can be increased, guarantee the work that screen cloth can be reliable and stable in the process of vibration, improve the service life of screen cloth.The upper surface of dividing plate is set to shiny surface and parallel with the plate face of sieve plate, be conducive to making the screenings through sieve aperture drop down onto respective diaphragms upper surface and rapidly under slide on the sieve plate of next stage screening group.
3) sieve plate in the same one-level screening group, in the present invention and dividing plate are all set to the angle of inclination of 10 ° ~ 25 °, in this angular range, effectively can control the gliding speed of material in suitable scope.If angle of inclination increases, material, due to the quickening of Action of Gravity Field gliding speed, is unfavorable for the abundant screening of material; If angle of inclination is too small, then the gliding speed of oversize and screenings can be caused excessively slow, easily cause the accumulation of material, reduce screening efficiency.
4), the present invention is provided with ring-type water jet in the upper end of charging aperture, effectively can control the generation of dust, protection of the environment; And effectively can be cleaned screen box inside (including but not limited to sieve plate and dividing plate) by ring-type water jet in off working state.
5), base of the present invention is connected by resilient support assemblies with between support, in the whirling vibration process of whirling vibration screening machine, due to elastic buffer effect, has good effectiveness in vibration suppression to base, reduces the load of base.
6), the present invention can add more multi-stage screening group easily according to the needs of different production occasion in screen box, and without the need to changing screening machine equipment, thus save equipment cost, there is more general applicability in the industrial production.
Accompanying drawing explanation
Fig. 1,2 is structural representation of the present invention.
Fig. 3 is the front view of screen cloth.
Fig. 4 is the structural representation of screen frame (unit).
The implication marked in figure is as follows:
1-screen box 2-electric rotating machine 3-rotating shaft
4-bearing 5-charging aperture 6-ring-type water jet
7-support 8-vibrating motor 9-pouring weight
10-cylinder 11-base 12-resilient support assemblies
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, the whirling vibration screening machine in the present embodiment is three grades of screening machines, namely contains three grades of screening groups in screening machine.
Rotating shaft 3 is rotatably mounted on support 7 (support 7 does not draw completely in Fig. 1,2), namely as shown in Figure 1, is provided with bearing 4 between rotating shaft 3 and support 7, and rotating shaft 3 consists of bearing 4 and support 7 and is rotatably assorted; 7, support is fixing on the pedestal 11 by resilient support assemblies 12.Electric rotating machine 2 is fixed on the upper end of support 7, and certainly, electric rotating machine 2 also can be fixed on other holders, if guarantee electric rotating machine 2 can continually and steadily reliably drive shaft 3 rotate.
Electric rotating machine 2 is connected with rotating shaft 3 by belt, and this belt sleeve is located at the top place of rotating shaft 3, and namely electric rotating machine 2 is rotated by belt drives rotating shaft 3.
Multi-stage screening group is fixedly installed between screen box 1 and rotating shaft 3, as follows to the specific descriptions of screening group:
First order screening group comprises sieve plate S1 and dividing plate G1, wherein higher one end of the sieve plate S1 of continuous tilt shape is fixedly connected in rotating shaft 3, and lower one end is fixedly connected on the inwall of screen box 1, the end of lower one end of sieve plate S1 is provided with the inclination discharge gate P1 discharged by its oversize, and the dividing plate G1 smooth surface of continuous tilt and parallel with the plate face of sieve plate S1, higher one end of dividing plate G1 is fixedly connected in rotating shaft 3 equally, and the end of the lower one end of dividing plate G1 is provided with the discharge gate screenings of sieve plate S1 being expelled to second level screening group;
Second level screening group comprises sieve plate S2 and dividing plate G2, wherein higher one end of the sieve plate S2 of continuous tilt is fixedly connected on screen box 1 inwall, and the vertical drainage conduit of being discharged by the oversize of sieve plate S2 is provided with near the end, lower one end of rotating shaft 3, described vertical discharge pipe box is located at the outside of rotating shaft 3, and the bottom opening place led on the downside of support 7 of vertical drainage conduit forms vertical discharge gate P2; The dividing plate G2 smooth surface of continuous tilt and parallel with the plate face of sieve plate S2, higher one end of dividing plate G2 is fixedly connected on screen box 1 inwall equally, and the end of lower one end of dividing plate G2 is provided with the discharge gate screenings of sieve plate S2 being expelled to third level screening group;
Third level screening group comprises sieve plate S3 and dividing plate G3, wherein higher one end of the sieve plate S3 of continuous tilt is fixedly connected in the described vertical drainage conduit in second level screening group, the end, lower one end of sieve plate S3 is provided with the vertical discharge gate P3 discharged by oversize, vertical discharge gate P3 near the inwall of screen box 1 and the bottom towards screen box 1 arrange; The dividing plate G3 smooth surface of continuous tilt and parallel with the plate face of sieve plate S3, higher one end of dividing plate G3 is also fixedly connected in the described vertical drainage conduit in second level screening group, and the end of the lower one end of dividing plate G3 is provided with the vertical discharge gate P4 discharged by the screenings of sieve plate S3; Sieve plate in these three groups of screening groups and the angle of inclination of dividing plate all remain between 10 ° ~ 25 °.
Therefore, the rotation of three groups of screening groups more than rotating shaft 3 has driven in rotation process, 7, support is for supporting screen box 1 and rotating shaft 3 and not rotating.
As shown in Figure 1, 2, the present invention is also provided with vibrating mechanism bottom support 7, vibrating mechanism involving vibrations motor 8, vibrating motor 8 and cylinder 10 are linked together by belt, the interior sidewall surface of cylinder 10 is installed with pouring weight 9, when vibrating motor 8 is rotated by belt drives cylinder 10, pouring weight 9 rotates together along with cylinder 10 and causes the vibration of cylinder 10, and then cause the vibration of support 7, thus rotating mechanism in the present invention and vibrating mechanism cooperation, vibrate while making the sieve in whirling vibration screening machine be grouped in rotation.
It is two or more that vibrating mechanism can be set to as shown in Figure 1, also can be set to as shown in Figure 2, as long as it can guarantee all even constant of vibration processes.
Below in conjunction with accompanying drawing, the course of work of the present invention is elaborated.
When starting working, ring-type water jet 6 is sprayed water to material, material is wetted, material enters the whirling vibration screening machine of whirling vibration simultaneously by charging aperture 5, and first material drops down onto on the compass screen surface of sieve plate S1, after sufficient material screening process, the material that particle diameter is greater than sieve plate S1 slot size remains on compass screen surface, and discharged by discharge gate P1, the material that particle diameter is less than sieve plate S1 slot size falls to dividing plate G1 through sieve aperture, and under the smooth surface of dividing plate G1, slide to sieve plate S2;
After entering second level screening group, through sufficient material screening process, the material that particle diameter is greater than sieve plate S2 slot size remains on compass screen surface, and discharged by discharge gate P2, the material that particle diameter is less than sieve plate S2 slot size falls to dividing plate G2 through sieve aperture, and under the smooth surface of dividing plate G2, slide to sieve plate S3;
After entering third level screening group, through sufficient material screening process, the material that particle diameter is greater than sieve plate S2 slot size remains on compass screen surface, and discharged by discharge gate P3, the material that particle diameter is less than sieve plate S2 slot size falls to dividing plate G3 through sieve aperture, and glide along the smooth surface of dividing plate G3, then discharged by discharge gate P4.
Screening machine in the present embodiment finally achieves 4 gradings of material.
As shown in Figure 3,4, below screen cloth W, be provided with screen frame (unit) J, effectively can increase the structural strength of screen cloth, guarantee the work that screen cloth can be reliable and stable in the process of vibration, improve the service life of screen cloth.
The present invention can also add more multi-stage screening group according to needs of production, to complete the screening of more particle size fractions to material.

Claims (10)

1. a whirling vibration screening machine, comprises the screen box (1) of a tubular, it is characterized in that this screening machine also comprises following part:
Rotating mechanism, this rotating mechanism comprises the driving mechanism that rotating shaft (3) and drive shaft (3) are rotated, described rotating shaft (3) is arranged on elastic support rotationally, and described screen box (1) is sheathed to be fixed in rotating shaft (3);
This screening machine also comprises the vibrating mechanism driving elastic support vibration;
Multi-stage screening mechanism, comprises the multistage screening group from top to bottom all in skewed setting, and this multi-stage screening group is fixedly installed between screen box (1) and rotating shaft (3); The screening group being in highest position tilts gradually obliquely near rotating shaft (3) laterally closer screen box (1) side, and the incline direction of adjacent screening group is contrary; The least significant end place that other sieves except the screening group being in extreme lower position are grouped in its incline direction is provided with and oversize is discharged the discharging opening of screen box (1) and screenings be expelled to the blanking port of next stage screening group, and the least significant end place that the sieve being in extreme lower position is grouped in its incline direction is provided with the discharging opening of oversize and screenings being discharged respectively screen box (1); Sieve diameter in multi-stage screening group reduces from top to bottom gradually;
The upper end of described screen box (1) is provided with and material uniformly dispersing is being in the charging aperture (5) of upper surface of screening group of highest position.
2. whirling vibration screening machine according to claim 1, it is characterized in that: one-level screening group is formed by the meshed sieve plate of band and dividing plate arbitrarily, described dividing plate is arranged on the below of the sieve plate of screening group at the same level, and the plate face of dividing plate parallels with the plate face of sieve plate.
3. whirling vibration screening machine according to claim 1, is characterized in that: the upside of described charging aperture (5) is provided with the ring-type water jet (6) that the material to charging aperture place is sprayed water; Described ring-type water jet (6) is sheathed to be fixed in rotating shaft (3).
4. whirling vibration screening machine according to claim 2, is characterized in that: described sieve plate is formed by being with meshed screen cloth (W) and screen frame (unit) (J), and described screen cloth (W) is arranged on the upside of screen frame (unit) (J).
5. whirling vibration screening machine according to claim 2, is characterized in that: the angle of inclination of described sieve plate is 10 ° ~ 25 °.
6. whirling vibration screening machine according to claim 2, is characterized in that: the upper surface towards sieve plate of described dividing plate is set to be convenient to the shiny surface of supports for material down-sliding.
7. the whirling vibration screening machine according to any one of claim 1 ~ 6, it is characterized in that: described elastic support comprises resilient support assemblies (12) and forms with rotating shaft (3) support (7) be rotatably assorted for supporting revolving shaft (3), and described support (7) is fixed on base (11) by resilient support assemblies (12); Described screen box (1) and support (7) match to form and enclose multi-stage screening mechanism in enclosure space wherein.
8. whirling vibration screening machine according to claim 7, is characterized in that: described vibrating mechanism comprises and is fixed on vibrating motor (8) on base (11) and offset assembly; It is upper and form with support (7) and be rotatably assorted that described offset assembly is fixed on support (7), and described vibrating motor (8) is rotated by belt drives offset assembly.
9. whirling vibration screening machine according to claim 8, is characterized in that: described offset assembly comprises hollow cylinder (10) and pouring weight (9); Described pouring weight (9) is fixed in the interior sidewall surface of cylinder (10); Described vibrating motor (8) is rotated by cylinder described in belt drives (10).
10. whirling vibration screening machine according to claim 7, is characterized in that: the driving mechanism in described rotating mechanism comprises electric rotating machine (2); Described electric rotating machine (2) is rotated by belt drives rotating shaft (3).
CN201410641747.5A 2014-11-13 2014-11-13 Whirling vibration screening machine Active CN104353608B (en)

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CN104772275A (en) * 2015-03-18 2015-07-15 成都绿迪科技有限公司 Vibrating screen for civil engineering
CN108185075B (en) * 2015-06-09 2021-06-01 浙江中医药大学中药饮片有限公司 Processing device of mulberry leaf and chrysanthemum tea
WO2018161858A1 (en) 2017-03-06 2018-09-13 Guangzhou Realbenefitspot Pharmaceutical Co., Ltd. Methods of producing and characterizing virus vaccine and virus vaccine composition
EP3420076A4 (en) 2017-03-06 2020-01-08 Guangzhou Realbenefitspot Pharmaceutical Co., Ltd. Methods of producing and characterizing virus vaccine and virus vaccine composition
CN111642439B (en) * 2020-05-18 2021-12-21 杭州千岛湖发展集团有限公司 Live fish temporary culture and transfer net cage convenient for quantitative extraction

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US3511373A (en) * 1967-05-22 1970-05-12 Sweco Inc Diverse screens with cleaning and distribution means
US3452868A (en) * 1968-04-03 1969-07-01 Sweco Inc Parallel flow separator
SU1666221A1 (en) * 1989-05-18 1991-07-30 Научно-производственное объединение по крахмалопродуктам Vibratory sieve
JPH1133488A (en) * 1997-07-23 1999-02-09 Kowa Kogyosho:Kk Vibrating screen
CN2317014Y (en) * 1998-01-22 1999-05-05 上海申德机械有限公司 Multi-layer centrifugal vibrating classification screen
CN201404907Y (en) * 2009-03-20 2010-02-17 诚鸿机械有限公司 Round vibrating screening machine
CN204247512U (en) * 2014-11-13 2015-04-08 安徽理工大学 Whirling vibration screening machine

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