CN111299136B - Multistage screening device and screening method - Google Patents
Multistage screening device and screening method Download PDFInfo
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- CN111299136B CN111299136B CN202010260926.XA CN202010260926A CN111299136B CN 111299136 B CN111299136 B CN 111299136B CN 202010260926 A CN202010260926 A CN 202010260926A CN 111299136 B CN111299136 B CN 111299136B
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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
- 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
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4663—Multi-layer screening surfaces
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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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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Abstract
A multi-stage screening device and a screening method comprise a first linear vibrating screen and a second linear vibrating screen; a second vibrating screen, a third vibrating screen and a fourth vibrating screen are arranged inside the first linear vibrating screen, and a fifth discharge hole, a fourth discharge hole, a third discharge hole and a second discharge hole are formed in one end of the first linear vibrating screen; the inside of second rectilinear vibrating screen is provided with ninth vibrating screen and tenth vibrating screen, and the mesh number of tenth vibrating screen is the same and the feed inlet and the fourth discharge gate intercommunication of tenth vibrating screen, and the mesh number of ninth vibrating screen and second vibrating screen is the same and the feed inlet and the third discharge gate intercommunication of ninth vibrating screen, and the one end of second rectilinear vibrating screen is provided with tenth discharge gate, ninth discharge gate and eighth discharge gate. In a word, the invention ensures the screening rate of ore sand with various specifications, improves the quality of the ore sand, reduces the space occupied by screening equipment and saves the energy consumption.
Description
Technical Field
The invention relates to an ore sand screening device, in particular to a multistage screening device and a screening method.
Background
In the preparation process of ore sand, ore needs to be screened after being crushed, in order to obtain ore sand with different particle sizes, the crushed ore needs to be screened in multiple stages, in the existing screening process, multiple linear vibrating screens are often adopted for screening, namely, the crushed ore firstly enters a first linear vibrating screen for screening, then the material screened by the first linear vibrating screen is manually transported to a second linear vibrating screen with vibrating screen meshes different from those of the first linear vibrating screen for screening, in this way, the material is respectively put into the linear vibrating screens with vibrating screen meshes different in mesh number for screening for multiple times, and finally, the ore sand with different particle sizes is obtained, the screening mode only screens the ore sand with each specification once, the screening rate and the quality of the ore sand with various specifications cannot be ensured, and the required equipment quantity is large, occupies a large space, is difficult to arrange equipment and has large energy consumption.
Disclosure of Invention
The invention provides a multistage screening device and a screening method, and aims to solve the technical problems that: the screening rate of the ore sand with various specifications is ensured, the quality of the ore sand is improved, the space occupied by screening equipment is reduced, and the energy consumption is saved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a multi-stage screening device comprises a first linear vibrating screen and a second linear vibrating screen; a second vibrating screen, a third vibrating screen and a fourth vibrating screen which are parallel to each other are sequentially arranged in the first linear vibrating screen from bottom to top, the mesh numbers of the second vibrating screen, the third vibrating screen and the fourth vibrating screen are sequentially reduced, and one end of the first linear vibrating screen is provided with a fifth discharge hole for discharging materials above the fourth vibrating screen, a fourth discharge hole for discharging materials above the third vibrating screen, a third discharge hole for discharging materials above the second vibrating screen and a second discharge hole for discharging materials below the second vibrating screen; the inside of second rectilinear vibrating screen is from supreme ninth vibrating screen and the tenth vibrating screen who is parallel to each other of having set gradually down, the mesh number of ninth vibrating screen and tenth vibrating screen reduces in proper order and is provided with solitary feed inlet separately, the mesh number of tenth vibrating screen and third vibrating screen is the same and the feed inlet and the fourth discharge gate of tenth vibrating screen pass through the pipeline intercommunication, the mesh number of ninth vibrating screen and second vibrating screen is the same and the feed inlet and the third discharge gate of ninth vibrating screen pass through the pipeline intercommunication, the one end of second rectilinear vibrating screen is provided with the tenth discharge gate that is used for discharging tenth vibrating screen top material, the ninth discharge gate that is used for discharging ninth vibrating screen top material and the eighth discharge gate that is used for discharging ninth vibrating screen below material.
Preferably, a first vibrating screen parallel to the second vibrating screen is arranged below the second vibrating screen, the mesh number of the first vibrating screen is larger than that of the second vibrating screen, a first discharge port for discharging materials below the first vibrating screen is arranged at one end of the first linear vibrating screen, and the materials between the first vibrating screen and the second vibrating screen are discharged through the second discharge port; the utility model discloses a vibrating screen, including ninth vibrating screen, eighth straight line vibrating screen, pipeline and second discharge gate, ninth vibrating screen's below is provided with the eighth vibrating screen parallel with ninth vibrating screen, the mesh number of eighth straight line vibrating screen is greater than ninth vibrating screen and is the same with the mesh number of first vibrating screen, eighth straight line vibrating screen is provided with solitary feed inlet and eighth vibrating screen's feed inlet and passes through the pipeline intercommunication with the second discharge gate, the one end of second straight line vibrating screen is provided with the seventh discharge gate that is used for discharging eighth vibrating screen below material, the material between eighth vibrating screen and the ninth vibrating screen is discharged through the eighth discharge gate.
Preferably, still include the third rectilinear vibrating screen, the inside of third rectilinear vibrating screen is provided with vibrating screen, goes up vibrating screen and is provided with solitary feed inlet, goes up vibrating screen and eighth vibrating screen's mesh the same and the feed inlet of going up vibrating screen passes through the pipeline intercommunication with the eighth discharge gate, and third rectilinear vibrating screen one end is provided with the last discharge gate that is used for discharging the material above vibrating screen and the well discharge gate that is used for discharging the material below the last vibrating screen.
Preferably, a seventh vibrating screen parallel to the eighth vibrating screen is arranged below the eighth vibrating screen, the mesh number of the seventh vibrating screen is larger than that of the eighth vibrating screen, the seventh vibrating screen is provided with an independent feed port, the feed port of the seventh vibrating screen is communicated with the first discharge port through a pipeline, one end of the second linear vibrating screen is provided with a sixth discharge port for discharging materials below the seventh vibrating screen, and materials between the seventh vibrating screen and the eighth vibrating screen are discharged through the seventh discharge port; the lower part of the upper vibrating screen is provided with a middle vibrating screen parallel to the upper vibrating screen, the mesh number of the middle vibrating screen is equal to that of the seventh vibrating screen, the middle vibrating screen is provided with an independent feeding hole, the feeding hole of the middle vibrating screen is communicated with the seventh discharging hole, one end of the third linear vibrating screen is provided with a lower discharging hole used for discharging materials below the middle vibrating screen, and the materials between the middle vibrating screen and the upper vibrating screen are discharged through the middle discharging hole.
Preferably, a sixth vibrating screen parallel to the seventh vibrating screen is arranged below the seventh vibrating screen, the mesh number of the sixth vibrating screen is larger than that of the seventh vibrating screen, a first tailing port for discharging materials below the sixth vibrating screen is arranged at one end of the second linear vibrating screen, and the materials between the sixth vibrating screen and the seventh vibrating screen are discharged through a sixth discharging port; the lower vibrating screen parallel to the middle vibrating screen is arranged below the middle vibrating screen, the mesh number of the lower vibrating screen is equal to that of a sixth vibrating screen, the lower vibrating screen is provided with an independent feeding hole, the feeding hole of the lower vibrating screen is communicated with a sixth discharging hole, one end of a third linear vibrating screen is provided with a second tailing hole used for discharging materials below the lower vibrating screen, and the materials between the lower vibrating screen and the middle vibrating screen are discharged through the lower discharging hole.
Preferably, a fifth vibrating screen parallel to the fourth vibrating screen is arranged above the fourth vibrating screen, the mesh number of the fifth vibrating screen is smaller than that of the fourth vibrating screen, a material return outlet for discharging materials above the fifth vibrating screen is arranged at one end of the first linear vibrating screen, and the materials between the fifth vibrating screen and the fourth vibrating screen are discharged through a fifth discharge outlet.
Preferably, the first vibrating screen mesh adopts a 5mm standard screen, the second vibrating screen mesh adopts a 20-mesh standard screen, the third vibrating screen mesh adopts a 30-mesh standard screen, the fourth vibrating screen mesh adopts a 50-mesh standard screen, the fifth vibrating screen mesh adopts a 70-mesh standard screen, the sixth vibrating screen mesh adopts a 90-mesh standard screen, and the seventh vibrating screen mesh adopts a 120-mesh standard screen.
Preferably, the first linear vibrating screen, the second linear vibrating screen and the third linear vibrating screen are all provided with only one vibrating motor.
A screening method using the multi-stage screening apparatus, the screening method comprising the steps of:
(1) placing the crushed materials into a fourth vibrating screen, sequentially screening the materials from top to bottom by a first linear vibrating screen, discharging the screened materials above the fourth vibrating screen through a fifth discharge port to return and crush the materials, discharging the materials below the fourth vibrating screen into a third vibrating screen, discharging the materials above the third vibrating screen through a fourth discharge port to the upper part of a tenth vibrating screen for further screening, discharging the materials below the third vibrating screen into a second vibrating screen, discharging the materials above the second vibrating screen into the upper part of a ninth vibrating screen through a third discharge port for further screening, discharging the materials below the second vibrating screen as tailings through the second discharge port, and avoiding screening;
(2) the second linear vibrating screen screens the materials from top to bottom in sequence, the materials above the tenth vibrating screen are discharged through a tenth discharge hole to obtain ore sand of the first specification, the materials above the ninth vibrating screen are discharged through a ninth discharge hole to obtain ore sand of the second specification, and the materials below the ninth vibrating screen are discharged through an eighth discharge hole to serve as tailings and are not screened any more.
Compared with the prior art, the invention has the beneficial effects that:
1. the single-inlet linear vibrating screen is improved to be a multi-inlet linear vibrating screen, and meanwhile, the multi-inlet linear vibrating screen is orderly connected, so that ore sand materials with different particle sizes are screened at least twice, the screening rate of ore sand with various specifications is ensured, and the quality of the ore sand is improved;
2. meanwhile, all the linear vibrating sieves are comprehensively utilized, each linear vibrating sieve is provided with vibrating screens with different meshes, and the vibrating screens of all the linear vibrating sieves are orderly communicated, so that the screening function is met, the number of screening equipment is reduced, the occupied space is reduced, the power consumption is saved, and the production cost is saved;
3. the whole process does not need manual material transfer, saves manpower, and improves screening efficiency.
In a word, the invention ensures the screening rate of ore sand with various specifications, improves the quality of the ore sand, reduces the space occupied by screening equipment and saves the energy consumption.
Drawings
FIG. 1 is a schematic diagram of the connection relationship of the present invention;
FIG. 2 is a schematic structural view of a first linear vibratory screen according to the present invention;
FIG. 3 is a schematic structural view of a second linear vibrating screen according to the present invention;
FIG. 4 is a schematic structural view of a third linear vibrating screen according to the present invention;
fig. 5 is a screening schematic of the present invention.
In the figure: 1. 101, a first vibrating screen, 1011, a first discharge port, 102, a second vibrating screen, 1021, a second discharge port, 103, a third vibrating screen, 1031, a third discharge port, 104, a fourth vibrating screen, 1041, a fourth discharge port, 105, a fifth vibrating screen, 1051, a fifth discharge port, 106, a fifth feed port, 1061, a return port, 2, a second vibrating screen, 201, a sixth vibrating screen, 2010, a first tailing port, 2011, a sixth discharge port, 202, a seventh vibrating screen, 2021, a seventh discharge port, 203, an eighth vibrating screen, 2031, an eighth discharge port, 204, a ninth vibrating screen, 2041, a ninth discharge port, 205, a tenth vibrating screen, 2051, a tenth discharge port, 3, a third vibrating screen, 301, a lower vibrating screen, 3011, a second tailing port, 302, a middle vibrating screen, 3021, a lower discharge port, 303, a second vibrating screen, a middle vibrating screen, 3021, a third discharge port, a fourth discharge port, a fifth vibrating screen, a fourth vibrating screen, a fifth discharge port, a sixth vibrating screen, a sixth discharge port, a sixth vibrating screen, a fifth discharge port, a fourth vibrating screen, a sixth discharge port, a fifth vibrating screen, a sixth vibrating screen, a fourth vibrating screen, a sixth vibrating screen, a fourth vibrating screen, an upper vibrating screen 3031, a middle discharge port 3041 and an upper discharge port.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention.
Example 1: referring to fig. 2 to 4, the present invention provides a multi-stage sieving apparatus including a first linear vibration sieve 1 and a second linear vibration sieve 2; a second vibrating screen 102, a third vibrating screen 103 and a fourth vibrating screen 104 which are parallel to each other are sequentially arranged in the first linear vibrating screen 1 from bottom to top, the mesh numbers of the second vibrating screen 102, the third vibrating screen 103 and the fourth vibrating screen 104 are sequentially reduced, one end of the first linear vibrating screen 1 is provided with a fifth discharge hole 1051 for discharging materials above the fourth vibrating screen 104, a fourth discharge hole 1041 for discharging materials above the third vibrating screen 103, a third discharge hole 1031 for discharging materials above the second vibrating screen 102 and a second discharge hole 1021 for discharging materials below the second vibrating screen 101; the inside of the second linear vibrating screen 2 is sequentially provided with a ninth vibrating screen 204 and a tenth vibrating screen 205 which are parallel to each other from bottom to top, the mesh numbers of the ninth vibrating screen 204 and the tenth vibrating screen 205 are sequentially reduced and are respectively provided with a separate feed inlet, the mesh numbers of the tenth vibrating screen 205 and the third vibrating screen 103 are the same, the feed inlet of the tenth vibrating screen 205 is communicated with the fourth discharge outlet 1041 through a pipeline, the mesh numbers of the ninth vibrating screen 204 and the second vibrating screen 102 are the same, the feed inlet of the ninth vibrating screen 204 is communicated with the third discharge outlet 1031 through a pipeline, one end of the second linear vibrating screen 2 is provided with a tenth discharge outlet 2051 for discharging materials above the tenth vibrating screen 205, a ninth discharge outlet 2041 for discharging materials above the ninth vibrating screen 204 and an eighth discharge outlet 2031 for discharging materials below the ninth vibrating screen 204.
The ore sand with two different specifications can be obtained by screening through the device, and the screening method comprises the following steps:
(1) placing the crushed materials on a fourth vibrating screen 104, sequentially screening the materials from top to bottom by a first linear vibrating screen 1, discharging the screened materials above the fourth vibrating screen 104 through a fifth discharge hole 1051 for returning and then crushing, discharging the materials below the fourth vibrating screen 104 onto a third vibrating screen 103, discharging the materials above the third vibrating screen 103 to the upper part of a tenth vibrating screen 205 through a fourth discharge hole 1041 for further screening, discharging the materials below the third vibrating screen 103 onto a second vibrating screen 102, discharging the materials above the second vibrating screen 102 to the upper part of a ninth vibrating screen 204 through a third discharge hole 1031 for further screening, discharging the materials below the second vibrating screen 102 through a second discharge hole 1021 as tailings, and not screening any more;
(2) the second linear vibrating screen 2 screens the materials from top to bottom in sequence, the materials above the tenth vibrating screen 205 are discharged through a tenth discharge port 2051 to obtain ore of the first specification, the materials above the ninth vibrating screen 204 are discharged through a ninth discharge port 2041 to obtain ore of the second specification, and the materials below the ninth vibrating screen 204 are discharged through an eighth discharge port 2031 to serve as tailings and are not screened any more.
In a word, the invention ensures the screening rate of ore sand with various specifications, improves the quality of the ore sand, reduces the space occupied by screening equipment and saves the energy consumption.
Example 2: in order to obtain ore sands with three different specifications, referring to example 1, it is further configured that a first vibrating screen 101 parallel to a second vibrating screen 102 is arranged below the second vibrating screen 102, the mesh number of the first vibrating screen 101 is larger than that of the second vibrating screen 102, one end of the first linear vibrating screen 1 is provided with a first discharge port 1011 for discharging materials below the first vibrating screen 101, and materials between the first vibrating screen 101 and the second vibrating screen 102 are discharged through a second discharge port 1021; an eighth vibrating screen 203 parallel to the ninth vibrating screen 204 is arranged below the ninth vibrating screen 204, the mesh number of the eighth linear vibrating screen 203 is larger than that of the ninth vibrating screen 204 and is the same as that of the first vibrating screen 101, the eighth linear vibrating screen 203 is provided with an independent feed inlet, the feed inlet of the eighth vibrating screen 203 is communicated with the second feed outlet 1021 through a pipeline, one end of the second linear vibrating screen 2 is provided with a seventh feed outlet 2021 for discharging materials below the eighth vibrating screen 203, and the materials between the eighth vibrating screen 203 and the ninth vibrating screen 204 are discharged through an eighth feed outlet 2031.
A screening method using the multi-stage screening apparatus, the screening method comprising the steps of:
(1) the crushed materials are put on a fourth vibrating screen 104, the first linear vibrating screen 1 screens the materials from top to bottom in sequence, the screened materials above the fourth vibrating screen 104 are discharged through a fifth discharge hole 1051 to return and then crushed, the materials below the fourth vibrating screen 104 fall onto a third vibrating screen 103, the materials above the third vibrating screen 103 are discharged above a tenth vibrating screen 205 through a fourth discharge hole 1041 to be further screened, the materials below the third vibrating screen 103 fall onto a second vibrating screen 102, the materials above the second vibrating screen 102 are discharged above a ninth vibrating screen 204 through a third discharge hole 1031 to be further screened, the materials below the second vibrating screen 102 fall onto the first vibrating screen 101, the materials between the first vibrating screen 101 and the second vibrating screen 102 are discharged above an eighth vibrating screen 203 through a second discharge hole 1021 to be further screened, the material below the first vibrating screen 101 is discharged through a first discharge port 1011 to be used as tailings and is not sieved;
(2) the second linear vibrating screen 2 screens the materials from top to bottom in sequence, the materials above the tenth vibrating screen 205 are discharged through a tenth discharge port 2051 to obtain ore sand of a first specification, the materials above the ninth vibrating screen 204 are discharged through a ninth discharge port 2041 to obtain ore sand of a second specification, the materials above the eighth vibrating screen 203 are discharged through an eighth discharge port 2031 to obtain ore sand of a third specification, the materials below the eighth vibrating screen 203 are discharged through a seventh discharge port 2021 to serve as tailings, and the screening is not performed any more.
Through the process, the three ore sands with different specifications can be obtained, and the ore sand with each specification is screened at least twice, so that the screening rate of the ore sands with various specifications is improved, and the quality of the ore sand is improved.
Example 3: referring to embodiment 2, the vibrating screen further includes a third linear vibrating screen 3, an upper vibrating screen 303 is disposed inside the third linear vibrating screen 3, the upper vibrating screen 303 is provided with a separate feeding port, the mesh numbers of the upper vibrating screen 303 and the eighth vibrating screen 203 are the same, the feeding port of the upper vibrating screen 301 is communicated with an eighth discharging port 2031 through a pipeline, and one end of the third linear vibrating screen 3 is provided with an upper discharging port 3041 for discharging the material above the upper vibrating screen 303 and a middle discharging port 3031 for discharging the material below the upper vibrating screen 303.
A screening method using the multi-stage screening apparatus, the screening method comprising the steps of:
(1) the crushed materials are put on a fourth vibrating screen 104, the first linear vibrating screen 1 screens the materials from top to bottom in sequence, the screened materials above the fourth vibrating screen 104 are discharged through a fifth discharge hole 1051 to return and then crushed, the materials below the fourth vibrating screen 104 fall onto a third vibrating screen 103, the materials above the third vibrating screen 103 are discharged above a tenth vibrating screen 205 through a fourth discharge hole 1041 to be further screened, the materials below the third vibrating screen 103 fall onto a second vibrating screen 102, the materials above the second vibrating screen 102 are discharged above a ninth vibrating screen 204 through a third discharge hole 1031 to be further screened, the materials below the second vibrating screen 102 fall onto the first vibrating screen 101, the materials between the first vibrating screen 101 and the second vibrating screen 102 are discharged above an eighth vibrating screen 203 through a second discharge hole 1021 to be further screened, the material below the first vibrating screen 101 is discharged through a first discharge port 1011 to be used as tailings and is not sieved;
(2) the second linear vibrating screen 2 screens the materials from top to bottom in sequence, the materials above the tenth vibrating screen 205 are discharged through a tenth discharge port 2051 to obtain ore sand of a first specification, the materials above the ninth vibrating screen 204 are discharged through a ninth discharge port 2041 to obtain ore sand of a second specification, the materials below the eighth vibrating screen 203 are discharged through a seventh discharge port 2021 to be used as tailings, the screening is not performed, and the materials between the eighth vibrating screen 203 and the ninth vibrating screen 204 are discharged through an eighth discharge port 2031 to the upper vibrating screen 301 for further screening;
(3) the third linear vibrating screen 3 screens the materials, the materials above the upper vibrating screen 303 are discharged through an upper discharge port 3041 to obtain ore sand of a third specification, and the materials below the upper vibrating screen 303 are discharged through a middle discharge port 3031 to serve as tailings and are not screened any more.
Compared with the embodiment 2, the ore sand of the third specification is sieved for three times in the embodiment, so that the net sieving rate of the ore sand of various specifications is improved, and the quality of the ore sand is improved.
Example 4: in order to obtain four kinds of ore with different specifications, referring to example 3, a seventh vibrating screen 202 parallel to the eighth vibrating screen 203 is arranged below the eighth vibrating screen 203, the mesh number of the seventh vibrating screen 202 is larger than that of the eighth vibrating screen 203, the seventh vibrating screen 202 is provided with a separate feed port, the feed port of the seventh vibrating screen 202 is communicated with a first feed port 1011 through a pipeline, one end of the second linear vibrating screen 2 is provided with a sixth feed port 2011 for discharging materials below the seventh vibrating screen 202, and materials between the seventh vibrating screen 202 and the eighth vibrating screen 203 are discharged through a seventh feed port 2021; a middle vibrating screen 302 parallel to the upper vibrating screen 303 is arranged below the upper vibrating screen 303, the mesh number of the middle vibrating screen 302 is equal to that of the seventh vibrating screen 202, the middle vibrating screen 302 is provided with a single feeding hole, the feeding hole of the middle vibrating screen 302 is communicated with a seventh discharging hole 2021, one end of the third linear vibrating screen 3 is provided with a lower discharging hole 3021 used for discharging materials below the middle vibrating screen 302, and the materials between the middle vibrating screen 302 and the upper vibrating screen 303 are discharged through a middle discharging hole 3031.
A screening method using the multi-stage screening apparatus, the screening method comprising the steps of:
(1) the crushed materials are put on a fourth vibrating screen 104, the first linear vibrating screen 1 screens the materials from top to bottom in sequence, the screened materials above the fourth vibrating screen 104 are discharged through a fifth discharge hole 1051 to return and then crushed, the materials below the fourth vibrating screen 104 fall onto a third vibrating screen 103, the materials above the third vibrating screen 103 are discharged above a tenth vibrating screen 205 through a fourth discharge hole 1041 to be further screened, the materials below the third vibrating screen 103 fall onto a second vibrating screen 102, the materials above the second vibrating screen 102 are discharged above a ninth vibrating screen 204 through a third discharge hole 1031 to be further screened, the materials below the second vibrating screen 102 fall onto the first vibrating screen 101, the materials between the first vibrating screen 101 and the second vibrating screen 102 are discharged above an eighth vibrating screen 203 through a second discharge hole 1021 to be further screened, the material below the first vibrating screen 101 is discharged through a first discharge port 1011 to be used as tailings and is not sieved;
(2) the second linear vibrating screen 2 screens the materials sequentially from top to bottom, the materials above the tenth vibrating screen 205 are discharged through a tenth discharge port 2051 to obtain ore sand of a first specification, the materials above the ninth vibrating screen 204 are discharged through a ninth discharge port 2041 to obtain ore sand of a second specification, the materials between the eighth vibrating screen 203 and the ninth vibrating screen 204 are discharged through an eighth discharge port 2031 to the upper vibrating screen 301 for further screening, the materials below the eighth vibrating screen 203 fall onto a seventh vibrating screen 202, the materials between the seventh vibrating screen 202 and the eighth vibrating screen 203 are discharged through a seventh discharge port 2021 to the upper part of the middle vibrating screen 302 for further screening, and the materials below the seventh vibrating screen 202 are discharged through a sixth discharge port 2011 to serve as tailings and are not screened any more;
(3) the third linear vibrating screen 3 screens the materials, the materials above the upper vibrating screen 303 are discharged through an upper discharge port 3041 to obtain ore sand of a third specification, the materials between the upper vibrating screen 303 and the middle vibrating screen 302 are discharged through a lower discharge port 3021 to obtain ore sand of a fourth specification, and the materials below the middle vibrating screen 302 are discharged through a middle discharge port 3031 to serve as tailings and are not screened any more.
Four kinds of ore sand with different specifications can be obtained through the process, and the ore sand with each specification is screened at least twice, so that the screening rate of the ore sand with various specifications is improved, and the quality of the ore sand is improved.
Example 5: in order to obtain five ore sands with different specifications, referring to embodiment 3 and fig. 1 to 5, a sixth vibrating screen 201 parallel to the seventh vibrating screen 202 is arranged below the seventh vibrating screen 202, the mesh number of the sixth vibrating screen 201 is larger than that of the seventh vibrating screen 202, one end of the second linear vibrating screen 2 is provided with a first tailing port 2010 for discharging a material below the sixth vibrating screen 201, and a material between the sixth vibrating screen 201 and the seventh vibrating screen 202 is discharged through a sixth discharging port 2011; the lower vibrating screen 301 parallel to the middle vibrating screen 302 is arranged below the middle vibrating screen 302, the mesh number of the lower vibrating screen 301 is equal to that of the sixth vibrating screen 201, the lower vibrating screen 301 is provided with an independent feeding hole, the feeding hole of the lower vibrating screen 301 is communicated with a sixth discharging hole 2011, one end of the third linear vibrating screen 3 is provided with a second tailing hole 3011 used for discharging materials below the lower vibrating screen 301, and the materials between the lower vibrating screen 301 and the middle vibrating screen 302 are discharged through the lower discharging hole 3021.
A screening method using the multi-stage screening apparatus, the screening method comprising the steps of:
(1) the crushed materials are put on a fourth vibrating screen 104, the first linear vibrating screen 1 screens the materials from top to bottom in sequence, the screened materials above the fourth vibrating screen 104 are discharged through a fifth discharge hole 1051 to return and then crushed, the materials below the fourth vibrating screen 104 fall onto a third vibrating screen 103, the materials above the third vibrating screen 103 are discharged above a tenth vibrating screen 205 through a fourth discharge hole 1041 to be further screened, the materials below the third vibrating screen 103 fall onto a second vibrating screen 102, the materials above the second vibrating screen 102 are discharged above a ninth vibrating screen 204 through a third discharge hole 1031 to be further screened, the materials below the second vibrating screen 102 fall onto the first vibrating screen 101, the materials between the first vibrating screen 101 and the second vibrating screen 102 are discharged above an eighth vibrating screen 203 through a second discharge hole 1021 to be further screened, the material below the first vibrating screen 101 is discharged through a first discharge port 1011 to be used as tailings and is not sieved;
(2) the second linear vibrating screen 2 screens the materials from top to bottom in sequence, the material above the tenth vibrating screen 205 is discharged through a tenth discharge port 2051 to obtain ore sand of a first specification, the material above the ninth vibrating screen 204 is discharged through a ninth discharge port 2041 to obtain ore sand of a second specification, the material between the eighth vibrating screen 203 and the ninth vibrating screen 204 is discharged through an eighth discharge port 2031 to an upper vibrating screen 301 for further screening, the material below the eighth vibrating screen 203 falls onto a seventh vibrating screen 202, the material between the seventh vibrating screen 202 and the eighth vibrating screen 203 is discharged through a seventh discharge port 2021 to the upper part of the middle vibrating screen 302 for further screening, the material below the seventh vibrating screen 202 falls onto the sixth vibrating screen 201, and the material between the sixth vibrating screen 201 and the seventh vibrating screen 202 is discharged onto the lower vibrating screen 301 for further screening, the material below the sixth vibrating screen 201 is discharged through the first tailing port 2010 as tailings and is not sieved again;
(3) the third linear vibrating screen 3 screens materials, the materials above the upper vibrating screen 303 are discharged through an upper discharge port 3041 to obtain ore sand of a third specification, the materials between the upper vibrating screen 303 and the middle vibrating screen 302 are discharged through a lower discharge port 3021 to obtain ore sand of a fourth specification, the materials below the middle vibrating screen 302 fall onto the lower vibrating screen 301, the materials between the lower vibrating screen 301 and the middle vibrating screen 302 are discharged through a lower discharge port (3021) to obtain ore sand of five specifications, the materials below the lower vibrating screen (301) are discharged through a second tailing port 3011 to serve as tailings, and screening is not performed any more.
By the process, five kinds of ore sand with different specifications can be obtained, and the ore sand with each specification is screened at least twice, so that the screening rate of the ore sand with various specifications is improved, and the quality of the ore sand is improved.
Furthermore, a fifth vibrating screen 105 parallel to the fourth vibrating screen 104 is arranged above the fourth vibrating screen 104, the mesh number of the fifth vibrating screen 105 is smaller than that of the fourth vibrating screen 104, a material return outlet 1061 for discharging materials above the fifth vibrating screen 105 is arranged at one end of the first linear vibrating screen 1, the materials between the fifth vibrating screen 105 and the fourth vibrating screen 104 are discharged through a fifth discharge outlet 1051, and by arranging the fifth vibrating screen 105, the materials with larger particles in the raw materials can be more quickly screened out and crushed, so that the screening efficiency is improved.
Specifically, the first vibrating screen 101 adopts a 5mm standard sieve, the second vibrating screen 102 adopts a 20-mesh standard sieve, the third vibrating screen 103 adopts a 30-mesh standard sieve, the fourth vibrating screen 104 adopts a 50-mesh standard sieve, the fifth vibrating screen 105 adopts a 70-mesh standard sieve, the sixth vibrating screen 201 adopts a 120-mesh standard sieve, and the seventh vibrating screen 202 adopts a 90-mesh standard sieve.
Further, the first linear vibrating screen 1, the second linear vibrating screen 2 and the third linear vibrating screen 3 are all provided with only one vibrating motor, so that the whole device is more compact in structure.
While the principle and embodiments of the present invention have been described in detail with reference to specific examples, the description of the embodiments is only for the purpose of facilitating understanding of the method and the core concept of the present invention, and it should be noted that, for those skilled in the art, various modifications and changes can be made without departing from the principle of the present invention, and such modifications and changes also fall within the protection scope of the appended claims.
Claims (6)
1. A multi-stage screening device, its characterized in that: comprises a first linear vibrating screen (1) and a second linear vibrating screen (2); a second vibrating screen (102), a third vibrating screen (103) and a fourth vibrating screen (104) which are parallel to each other are sequentially arranged in the first linear vibrating screen (1) from bottom to top, the mesh numbers of the second vibrating screen (102), the third vibrating screen (103) and the fourth vibrating screen (104) are sequentially reduced, a fifth discharge hole (1051) for discharging materials above the fourth vibrating screen (104), a fourth discharge hole (1041) for discharging materials above the third vibrating screen (103), a third discharge hole (1031) for discharging materials above the second vibrating screen (102) and a second discharge hole (1021) for discharging materials below the second vibrating screen (102) are formed in one end of the first linear vibrating screen (1); the inside of the second linear vibrating screen (2) is sequentially provided with a ninth vibrating screen (204) and a tenth vibrating screen (205) which are parallel to each other from bottom to top, the mesh numbers of the ninth vibrating screen (204) and the tenth vibrating screen (205) are sequentially reduced and are respectively provided with independent feed inlets, the mesh numbers of the tenth vibrating screen (205) and the third vibrating screen (103) are the same, the feed inlet of the tenth vibrating screen (205) is communicated with the fourth discharge outlet (1041) through a pipeline, the mesh numbers of the ninth vibrating screen (204) and the second vibrating screen (102) are the same, the feed inlet of the ninth vibrating screen (204) is communicated with the third discharge outlet (1031) through a pipeline, one end of the second linear vibrating screen (2) is provided with a tenth discharge outlet (2051) for discharging materials above the tenth vibrating screen (205), a ninth discharge outlet (2041) for discharging materials above the ninth vibrating screen (204) and an eighth discharge outlet for discharging materials below the ninth vibrating screen (204) (2031) (ii) a A first vibrating screen (101) parallel to the second vibrating screen (102) is arranged below the second vibrating screen (102), the mesh number of the first vibrating screen (101) is larger than that of the second vibrating screen (102), a first discharge hole (1011) for discharging materials below the first vibrating screen (101) is formed in one end of the first linear vibrating screen (1), and the materials between the first vibrating screen (101) and the second vibrating screen (102) are discharged through a second discharge hole (1021); an eighth vibrating screen (203) parallel to the ninth vibrating screen (204) is arranged below the ninth vibrating screen (204), the mesh number of the eighth linear vibrating screen (203) is larger than that of the ninth vibrating screen (204) and is the same as that of the first vibrating screen (101), the eighth linear vibrating screen (203) is provided with a separate feeding hole, the feeding hole of the eighth vibrating screen (203) is communicated with the second discharging hole (1021) through a pipeline, one end of the second linear vibrating screen (2) is provided with a seventh discharging hole (2021) for discharging materials below the eighth vibrating screen (203), and materials between the eighth vibrating screen (203) and the ninth vibrating screen (204) are discharged through an eighth discharging hole (2031); the vibrating screen is characterized by further comprising a third linear vibrating screen (3), an upper vibrating screen (303) is arranged inside the third linear vibrating screen (3), the upper vibrating screen (303) is provided with an independent feeding hole, the mesh number of the upper vibrating screen (303) and the mesh number of the eighth vibrating screen (203) are the same, the feeding hole of the upper vibrating screen (303) is communicated with an eighth discharging hole (2031) through a pipeline, one end of the third linear vibrating screen (3) is provided with an upper discharging hole (3041) for discharging materials above the upper vibrating screen (303) and a middle discharging hole (3031) for discharging materials below the upper vibrating screen (303); the first linear vibrating screen (1) is connected with the second linear vibrating screen (2) through a pipeline, the first linear vibrating screen (1) is connected with the third linear vibrating screen (3) through a pipeline, and the three linear vibrating screens are mutually independent to form a multistage screening device; the material vertically enters from top to bottom from the feeding hole, is vibrated by the vibrating screen and gradually moves to the discharging hole, and is then conveyed downwards from the discharging hole to the next linear vibrating screen, and the conveying direction of the material is opposite to that of the previous vibrating screen through a pipeline between the discharging hole and the vibrating screen; the crushed materials are placed on a fourth vibrating screen (104), the first linear vibrating screen (1) screens the materials from top to bottom in sequence, the screened materials above the fourth vibrating screen (104) are discharged through a fifth discharge hole (1051) to return and then crushed, the materials below the fourth vibrating screen (104) fall onto a third vibrating screen (103), the materials above the third vibrating screen (103) are discharged above a tenth vibrating screen (205) through a fourth discharge hole (1041) to be further screened, the materials below the third vibrating screen (103) fall onto a second vibrating screen (102), the materials above the second vibrating screen (102) are discharged above a ninth vibrating screen (204) through a third discharge hole (1031) to be further screened, the materials below the second vibrating screen (102) fall onto a first vibrating screen (101), discharging the materials between the first vibrating screen (101) and the second vibrating screen (102) through a second discharge hole (1021) to the position above an eighth vibrating screen (203) for further screening, and discharging the materials below the first vibrating screen (101) through a first discharge hole (1011) to serve as tailings, wherein the materials are not screened any more; the materials are sequentially screened from top to bottom by the second linear vibrating screen (2), the materials above the tenth vibrating screen (205) are discharged through a tenth discharge hole (2051) to obtain ore sand of a first specification, the materials above the ninth vibrating screen (204) are discharged through a ninth discharge hole (2041) to obtain ore sand of a second specification, the materials below the eighth vibrating screen (203) are discharged through a seventh discharge hole (2021) to serve as tailings and are not screened, and the materials between the eighth vibrating screen (203) and the ninth vibrating screen (204) are discharged through an eighth discharge hole (2031) to the upper vibrating screen (303) for further screening; and the third linear vibrating screen (3) screens the materials, the materials above the upper vibrating screen (303) are discharged through an upper discharge hole (3041) to obtain ore sand of a third specification, and the materials below the upper vibrating screen (303) are discharged through a middle discharge hole (3031) to serve as tailings and are not screened any more.
2. A multi-stage screening apparatus according to claim 1, wherein: a seventh vibrating screen (202) parallel to the eighth vibrating screen (203) is arranged below the eighth vibrating screen (203), the mesh number of the seventh vibrating screen (202) is larger than that of the eighth vibrating screen (203), the seventh vibrating screen (202) is provided with an independent feed port, the feed port of the seventh vibrating screen (202) is communicated with the first discharge port (1011) through a pipeline, one end of the second linear vibrating screen (2) is provided with a sixth discharge port (2011) for discharging materials below the seventh vibrating screen (202), and materials between the seventh vibrating screen (202) and the eighth vibrating screen (203) are discharged through a seventh discharge port (2021); the middle vibrating screen (302) parallel to the upper vibrating screen (303) is arranged below the upper vibrating screen (303), the mesh number of the middle vibrating screen (302) is equal to that of the seventh vibrating screen (202), the middle vibrating screen (302) is provided with an independent feeding hole, the feeding hole of the middle vibrating screen (302) is communicated with a seventh discharging hole (2021), one end of the third linear vibrating screen (3) is provided with a lower discharging hole (3021) used for discharging materials below the middle vibrating screen (302), and the materials between the middle vibrating screen (302) and the upper vibrating screen (303) are discharged through the middle discharging hole (3031).
3. A multi-stage screening apparatus according to claim 2, wherein: a sixth vibrating screen (201) parallel to the seventh vibrating screen (202) is arranged below the seventh vibrating screen (202), the mesh number of the sixth vibrating screen (201) is larger than that of the seventh vibrating screen (202), a first tailing port (2010) for discharging materials below the sixth vibrating screen (201) is formed in one end of the second linear vibrating screen (2), and the materials between the sixth vibrating screen (201) and the seventh vibrating screen (202) are discharged through a sixth discharging port (2011); the lower vibrating screen (301) parallel to the middle vibrating screen (302) is arranged below the middle vibrating screen (302), the mesh number of the lower vibrating screen (301) is equal to that of the sixth vibrating screen (201), the lower vibrating screen (301) is provided with an independent feeding hole, the feeding hole of the lower vibrating screen (301) is communicated with the sixth discharging hole (2011), one end of the third linear vibrating screen (3) is provided with a second tailing hole (3011) used for discharging materials below the lower vibrating screen (301), and the materials between the lower vibrating screen (301) and the middle vibrating screen (302) are discharged through the lower discharging hole (3021).
4. A multi-stage screening apparatus according to claim 3, wherein: a fifth vibrating screen (105) parallel to the fourth vibrating screen (104) is arranged above the fourth vibrating screen (104), the mesh number of the fifth vibrating screen (105) is smaller than that of the fourth vibrating screen (104), a material return outlet (1061) used for discharging materials above the fifth vibrating screen (105) is formed in one end of the first linear vibrating screen (1), and the materials between the fifth vibrating screen (105) and the fourth vibrating screen (104) are discharged through a fifth discharge outlet (1051).
5. A multi-stage screening apparatus according to claim 4, wherein: the first vibrating screen (101) adopts a 5mm standard sieve, the second vibrating screen (102) adopts a 20-mesh standard sieve, the third vibrating screen (103) adopts a 30-mesh standard sieve, the fourth vibrating screen (104) adopts a 50-mesh standard sieve, the fifth vibrating screen (105) adopts a 70-mesh standard sieve, the sixth vibrating screen (201) adopts a 120-mesh standard sieve, and the seventh vibrating screen (202) adopts a 90-mesh standard sieve.
6. A multi-stage screening apparatus according to claim 5, wherein: the first linear vibrating screen (1), the second linear vibrating screen (2) and the third linear vibrating screen (3) are all provided with only one vibrating motor.
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| US4140630A (en) * | 1976-09-16 | 1979-02-20 | Durex Products, Inc. | Sorting apparatus for fragmented materials |
| MD4105C1 (en) * | 2008-07-25 | 2011-10-31 | Сергей ТАЛПЭ | Dryer-separator with vibration-fluidized bed and process for drying and separation |
| KR20150030940A (en) * | 2013-09-13 | 2015-03-23 | 삼성중공업 주식회사 | Apparatus for separation of seabed minerals |
| CN105436084B (en) * | 2014-08-15 | 2017-12-15 | 中联重科股份有限公司 | Sorting mineral device and mineral processing systems |
| CN207057023U (en) * | 2017-08-10 | 2018-03-02 | 河北康冉创鑫生物科技股份有限公司 | A kind of corn pellet processing spends stone vibrating screen panel |
| CN208839959U (en) * | 2018-07-26 | 2019-05-10 | 北京启顺京腾科技有限责任公司 | Intelligent sifting bed |
| CN209918285U (en) * | 2019-04-09 | 2020-01-10 | 卢氏县天宝生物科技有限公司 | Novel vibrations of auricularia auriculajudae are sorted device |
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