CN110465484A - Quartz sand straight-line oscillation screening machine process and treat system - Google Patents
Quartz sand straight-line oscillation screening machine process and treat system Download PDFInfo
- Publication number
- CN110465484A CN110465484A CN201910787136.4A CN201910787136A CN110465484A CN 110465484 A CN110465484 A CN 110465484A CN 201910787136 A CN201910787136 A CN 201910787136A CN 110465484 A CN110465484 A CN 110465484A
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- China
- Prior art keywords
- fixedly connected
- frame
- quartz sand
- installs case
- screening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- 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
-
- 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
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of quartz sand straight-line oscillation screening machine process and treat systems, including support frame, the top of support frame as described above is fixedly installed with installs case, the reciprocating screw rod being vertically arranged is rotatably equipped between the bottom end inner wall and top inner wall of installs case, lifter plate is additionally provided in installs case, threaded hole there are two being opened up on lifter plate, two reciprocating screw rods run through lifter plate by two threaded holes, the top of lifter plate is fixedly connected with elevating lever, the top of installs case offers through-hole, and the top of elevating lever extends to the outside of installs case by through-hole.Structure of the invention is ingenious, it is easy to use, screening frame can be driven back and forth to rock relative to support rod by the driving of rotating electric machine, so as to significantly accelerate the screening efficiency of quartz sand, and the sieve plate of different sieve diameters can be replaced, so as to sieve to the quartz sand that different-diameter requires, it is more extensive that device is applicable in scene.
Description
Technical field
The invention belongs to quartz sand processing technique fields, and in particular to a kind of quartz sand straight-line oscillation screening machine working process
System.
Background technique
Quartz sand is quartz through the broken quartz particles being process.Quartz is a kind of nonmetallic mineral, is one
Hard, wear-resisting, stable chemical performance the silicate mineral of kind.The color of quartz sand is milky or semi-transparent clear shape, Mohs
Hardness 7.Quartz sand is important industrial mineral raw material, and non-chemical dangerous material are widely used in glass, casting, ceramics and fire proofing wood
Material, smelting duriron, flux for metallurgy, metallurgy, building, chemical industry, plastics, rubber, abrasive material, the industry such as filtrate.
An important process in the process of quartz sand is that particle will not be met in quartz sand by screening machine
The quartz sand of degree size screens out, to improve the quality of quartz sand, is mainly carried out in the prior art by straight-line oscillation screening machine
Screening, this screening machine mainly pass through drive and shine frame horizontal reciprocating movement, accelerate the sieve of quartz particles by the effect of inertia
Choosing, this screening machine are always maintained at level due to shining frame, and the quartz sand shone in frame large range of can not be shaken back and forth, screen
Efficiency is lower.
Summary of the invention
The purpose of the present invention is to provide a kind of quartz sand straight-line oscillation screening machine process and treat systems, to solve above-mentioned back
The problem of being proposed in scape technology.
To achieve the above object, the invention provides the following technical scheme: including support frame, the top of support frame as described above is fixed
Installs case is installed, is rotatably equipped with the reciprocating screw rod being vertically arranged between the bottom end inner wall and top inner wall of installs case, is installed
It is additionally provided with lifter plate in case, is opened up on lifter plate there are two threaded hole, two reciprocating screw rods run through lifting by two threaded holes
Plate, the top of lifter plate are fixedly connected with elevating lever, and the top of installs case offers through-hole, and the top of elevating lever is prolonged by through-hole
The outside of installs case is extended to, the outside of two reciprocating screw rods is fixedly installed with the first tooth close to the bottom end inner wall position of installs case
Wheel is located between two first gears on the bottom end inner wall of installs case and is rotatably connected to second gear, second gear with two the
One gear is meshed, and rotating electric machine, the output shaft of rotating electric machine and a wherein reciprocating screw rod are fixedly installed on support frame
Bottom end be fixedly connected, support frame be equipped with two support rods being vertically arranged, between support frame and support rod be equipped with screening frame,
Screening frame is fixedly connected with transverse slat, the bottom end of transverse slat and the top sliding and rotation connection of elevating lever close to the side of installs case,
Screening frame is fixedly connected with two connecting rods close to the side of support rod, and two connecting rods are respectively corresponded far from one end of screening frame
It is hinged in the top of two support rods, sieves and be fixedly connected with the first mounting blocks on the side inner wall of frame, screening frame is far from the
Sliding eye is offered on the side inner wall of one mounting blocks, and horizontally disposed sliding bar is slidably fitted in sliding eye, sliding bar
One end extends to the inside of screening frame and is fixedly connected with the second mounting blocks, and peace is clamped between the first mounting blocks and the second mounting blocks
Equipped with sieve plate, the other end of sliding bar extends to the outside of screening frame and is fixedly connected with pulling plate, and the one of the close screening frame of pulling plate
Side is fixedly connected with bolt, sieves frame close to the side of pulling plate and offers slot, and one end of bolt extends in slot, sieves frame
Outside be also fixedly connected with vibrating motor.
Preferably, the bottom end of the transverse slat is fixedly connected with fixed strip, and sliding mouth, the top of elevating lever are offered on fixed strip
End is fixedly connected with horizontally disposed slider bar, and slider bar runs through fixed strip by sliding mouth.
Preferably, the slider bar is fixedly connected with fixture block far from one end of elevating lever, and fixture block is cylindrical structure, and blocks
The diameter of block is greater than the width of sliding mouth.
Preferably, motor reducer, motor reducer input terminal and rotating electric machine are also fixedly installed on support frame as described above
Output shaft be fixedly connected, motor reducer output end is fixedly connected with the bottom end of a wherein reciprocating screw rod.
Preferably, first mounting blocks and the second mounting blocks side close to each other offer holding tank, sieve plate
Two sides extend respectively in two holding tanks.
Preferably, the top of the sieve plate is fixedly connected with baffle close to the side of the second mounting blocks, and baffle is far from second
The side of mounting blocks is in contact with the inner wall of screening frame.
Preferably, the outer sheath of the bolt is equipped with spring, and one end of spring is fixedly connected with frame is sieved, spring it is another
End is fixedly connected with pulling plate.
Preferably, the pulling plate is fixedly connected with pull handle, the outside installation of pull handle far from the side of screening frame
Rubber sleeve.
Preferably, horizontally disposed support plate, the top of support plate are fixedly connected between the installs case and support rod
Two sides are fixedly connected to the snap-gauge being vertically arranged, and the top of support plate is placed with splicing frame between two snap-gauges.
Compared with prior art, the beneficial effects of the present invention are:
1. open rotating electric machine, rotating electric machine drives a wherein reciprocating screw rod rotation, due to first gear and second
Engagement between gear drives another reciprocating screw rod also to rotate synchronously together, since lifter plate and two reciprocating screw rod screw threads connect
It connects, so that lifter plate be driven to go up and down, and then drives lifter rod lifting that screening frame is pushed back and forth to rock relative to support rod, so as to
Accelerate the screening of quartz sand；
The elastic force of spring can be overcome to pull the second mounting blocks to the right 2. holding pull handle, make it away from the first installation
Block can change the sieve plate of different sieve diameters, so as to easily remove sieve plate so as to what is required different-diameter
Quartz sand is sieved, and it is more extensive that device is applicable in scene；
3. can place splicing frame in support plate by installing support plate between installs case and support rod, splicing frame is used
In catching the quartz sand screened, two snap-gauges for limiting splicing frame position, prevent the position of splicing frame generate offset and
So that the quartz sand fallen is fallen to the ground.
Structure of the invention is ingenious, easy to use, can drive screening frame relative to support rod by the driving of rotating electric machine
It back and forth rocks, so as to significantly accelerate the screening efficiency of quartz sand, and the sieve plate of different sieve diameters can be replaced, thus
The quartz sand that can be required different-diameter sieves, and it is more extensive that device is applicable in scene.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is location A enlarged diagram of the invention；
Fig. 3 is installs case main perspective cross-sectional view of the invention；
Fig. 4 is top view of the invention；
Fig. 5 is elevating lever and transverse slat link position LOOK RIGHT cross-sectional view of the invention.
In figure: 1, support frame；2, installs case；3, rotating electric machine；4, motor reducer；5, elevating lever；6, transverse slat；7, fixed
Item；8, mouth is slided；9, fixture block；10, slider bar；11, frame is sieved；12, second gear；13, sieve plate；14, the first mounting blocks；15,
Second mounting blocks；16, connecting rod；17, support rod；18, support plate；19, snap-gauge；20, splicing frame；21, baffle；22, sliding eye；
23, sliding bar；24, pulling plate；25, pull handle；26, rubber sleeve；27, slot；28, bolt；29, spring；30, reciprocating screw rod；
31, lifter plate；32, first gear；33, vibrating motor.
Specific embodiment
Below with reference to embodiment, the present invention will be further described.
The following examples are intended to illustrate the invention, but cannot be used to limit the scope of the invention.Item in embodiment
Part can be adjusted according to actual conditions are further, under concept thereof of the invention all to method simple modifications of the invention
Belong to the scope of protection of present invention.
Fig. 1-5 is please referred to, the present invention provides quartz sand straight-line oscillation screening machine process and treat system technical solution: including branch
Support 1, the top of support frame 1 are fixedly installed with installs case 2, are rotatablely installed between the bottom end inner wall and top inner wall of installs case 2
There is the reciprocating screw rod 30 being vertically arranged, lifter plate 31 is additionally provided in installs case 2, is opened up on lifter plate 31 there are two threaded hole, two
Root reciprocating screw rod 30 runs through lifter plate 31 by two threaded holes, and the top of lifter plate 31 is fixedly connected with elevating lever 5, installs case
2 top offers through-hole, and the top of elevating lever 5 extends to the outside of installs case 2 by through-hole, two reciprocating screw rods 30 it is outer
Side is fixedly installed with first gear 32 close to the bottom end inner wall position of installs case 2, is located at two on the bottom end inner wall of installs case 2
Second gear 12 is rotatably connected between first gear 32, second gear 12 is meshed with two first gears 32, support frame 1
On be fixedly installed with rotating electric machine 3, the output shaft of rotating electric machine 3 is fixedly connected with the bottom end of a wherein reciprocating screw rod 30, branch
Support 1 is equipped with two support rods 17 being vertically arranged, and screening frame 11 is equipped between support frame 1 and support rod 17, sieves frame 11
Transverse slat 6, the bottom end of transverse slat 6 and the top sliding and rotation connection of elevating lever 5, sieve are fixedly connected with close to the side of installs case 2
It is divided to frame 11 to be fixedly connected with two connecting rods 16, the one end of two connecting rods 16 far from screening frame 11 close to the side of support rod 17
The top for corresponding respectively to two support rods 17 is hinged, and sieves and is fixedly connected with the first mounting blocks on the side inner wall of frame 11
14, it sieves and offers sliding eye 22 on side inner wall of the frame 11 far from the first mounting blocks 14, be slidably fitted with water in sliding eye 22
The sliding bar 23 of flat setting, one end of sliding bar 23 extend to the inside of screening frame 11 and are fixedly connected with the second mounting blocks 15,
Clamping is equipped with sieve plate 13 between first mounting blocks 14 and the second mounting blocks 15, and the other end of sliding bar 23 extends to screening frame 11
Outside and be fixedly connected with pulling plate 24, pulling plate 24 is fixedly connected with bolt 28 close to the side of screening frame 11, and screening frame 11 leans on
The side of nearly pulling plate 24 offers slot 27, and one end of bolt 28 extends in slot, and the outside of screening frame 11 is also fixedly connected
There is vibrating motor 33, vibrating motor 33 is able to drive screening frame 11 and vibrates, achievees the effect that accelerate screening.
Wherein, the bottom end of transverse slat 6 is fixedly connected with fixed strip 7, and sliding mouth 8, the top of elevating lever 5 are offered on fixed strip 7
End is fixedly connected with horizontally disposed slider bar 10, and slider bar 10 runs through fixed strip 7 by sliding mouth 8, moves down when on elevating lever 5
Slider bar 10 can be pushed to horizontally slip when dynamic in sliding mouth 8, so that screening frame 11 be pushed to rotate relative to support rod 17, reached
To the effect for driving promotion screening frame 11 to rock.
Wherein, slider bar 10 is fixedly connected with fixture block 9 far from one end of elevating lever 5, and fixture block 9 is cylindrical structure, and is blocked
The diameter of block 9 is greater than the width of sliding mouth 8, and the presence of fixture block 9 can guarantee that slider bar 10 will not be detached from out of sliding mouth 8.
Wherein, motor reducer 4,4 input terminal of motor reducer and rotating electric machine 3 are also fixedly installed on support frame 1
Output shaft is fixedly connected, and 4 output end of motor reducer is fixedly connected with the bottom end of a wherein reciprocating screw rod 30, motor reducer
4 match with rotating electric machine 3, motor reducer 4 for reducing 3 output shaft of rotating electric machine angular velocity of rotation so that electric rotating
Machine 3 is able to drive reciprocating screw rod 30 and slowly rotates.
Wherein, the first mounting blocks 14 and the second mounting blocks 15 side close to each other offer holding tank, sieve plate 13
Two sides extend respectively in two holding tanks, between the presence of holding tank makes between the first mounting blocks 14 and the second mounting blocks 15
Away from that can clamp sieve plate 13 is stable when reducing, sieve plate 13 can be mounted and dismounted easily.
Wherein, the top of sieve plate 13 is fixedly connected with baffle 21 close to the side of the second mounting blocks 15, and baffle 21 is far from
The side of two mounting blocks 15 is in contact with the inner wall of screening frame 11, and the presence of baffle 21 is right for blocking sieve plate 13 and screening frame 11
Gap between the inner wall of side is placed the quartz sand sieved without sieve plate 13 and is flowed down from gap.
Wherein, the outer sheath of bolt 28 is equipped with spring 29, and one end of spring 29 is fixedly connected with screening frame 11, spring 29
The other end is fixedly connected with pulling plate 24, and the elastic force of spring 29 can pull the second mounting blocks 15 to be shifted left close to the first mounting blocks 14,
Two mounting blocks 15 and the first mounting blocks 14 are fixed to clamp sieve plate 13.
Wherein, pulling plate 24 is fixedly connected with pull handle 25, the outside peace of pull handle 25 far from the side of screening frame 11
Equipped with rubber sleeve 26, holding pull handle 25 can overcome the elastic force of spring 29 to pull the second mounting blocks 15 to the right, make it away from
First mounting blocks 14, so as to easily remove sieve plate 13.
Wherein, horizontally disposed support plate 18, the top of support plate 18 are fixedly connected between installs case 2 and support rod 17
Two sides are fixedly connected to the snap-gauge 19 being vertically arranged, and the top of support plate 18 is placed with splicing frame between two snap-gauges 19
20, splicing frame 20 prevents splicing frame for limiting 20 position of splicing frame for catching the quartz sand screened, two snap-gauges 19
20 position generates offset and the quartz sand fallen is fallen to the ground.
The working principle of the invention and process for using: quartz sand to be sieved is placed in screening frame 11, electric rotating is opened
When machine 3, rotating electric machine 3 drives a wherein rotation of reciprocating screw rod 30, due to nibbling between first gear 32 and second gear 12
Crossed belt moves another reciprocating screw rod 30 and also rotates synchronously together, since lifter plate 31 is threadedly coupled with two reciprocating screw rods 30, from
And drive lifter plate 31 to go up and down, and then drive the lifting of elevating lever 5 that screening frame 11 is pushed back and forth to rock relative to support rod 17, thus
It can accelerate the screening of quartz sand, holding pull handle 25 can overcome the elastic force of spring 29 to pull the second mounting blocks 15 to the right, make
It is far from the first mounting blocks 14, so as to easily remove sieve plate 13, can change the sieve plate 13 of different sieve diameters, from
And the quartz sand that can be required different-diameter sieves, it is more extensive that device is applicable in scene.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. quartz sand straight-line oscillation screening machine process and treat system, it is characterised in that: including support frame (1), support frame as described above (1)
Top be fixedly installed with installs case (2), be rotatably equipped with and be vertically arranged between the bottom end inner wall and top inner wall of installs case (2)
Reciprocating screw rod (30), is additionally provided with lifter plate (31) in installs case (2), is opened up on lifter plate (31) there are two threaded hole, two
Reciprocating screw rod (30) runs through lifter plate (31) by two threaded holes, and the top of lifter plate (31) is fixedly connected with elevating lever (5),
The top of installs case (2) offers through-hole, and the top of elevating lever (5) extends to the outside of installs case (2) by through-hole, and two past
The outside of multifilament bar (30) is fixedly installed with first gear (32) close to the bottom end inner wall position of installs case (2), installs case (2)
Bottom end inner wall on be rotatably connected to second gear (12) between two first gears (32), second gear (12) with two
First gear (32) is meshed, and is fixedly installed on support frame (1) rotating electric machine (3), the output shaft of rotating electric machine (3) and its
In the bottom end of a reciprocating screw rod (30) be fixedly connected, support frame (1) is equipped with two support rods (17) being vertically arranged, support
Screening frame (11) is equipped between frame (1) and support rod (17), screening frame (11) is fixedly connected with cross close to the side of installs case (2)
Plate (6), the top sliding and rotation connection of the bottom end and elevating lever (5) of transverse slat (6), screening frame (11) is close to support rod (17)
Side is fixedly connected with two connecting rods (16), and two connecting rods (16) correspond respectively to two far from one end of screening frame (11)
The top of support rod (17) is hinged, and sieves and is fixedly connected with the first mounting blocks (14) on the side inner wall of frame (11), sieves frame
(11) it is offered sliding eye (22) on the side inner wall far from the first mounting blocks (14), is slidably fitted with level in sliding eye (22)
The sliding bar (23) of setting, one end of sliding bar (23) extend to the inside of screening frame (11) and are fixedly connected with the second mounting blocks
(15), clamping is equipped with sieve plate (13) between the first mounting blocks (14) and the second mounting blocks (15), the other end of sliding bar (23)
It extends to the outside of screening frame (11) and is fixedly connected with pulling plate (24), pulling plate (24) is close to the fixed company in the side of screening frame (11)
It is connected to bolt (28), screening frame (11) offers slot (27) close to the side of pulling plate (24), and one end of bolt (28) extends to
In slot, the outside of screening frame (11) is also fixedly connected with vibrating motor (33).
2. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: the transverse slat
(6) bottom end is fixedly connected with fixed strip (7), and sliding mouth (8) is offered on fixed strip (7), and the top of elevating lever (5) is fixed to be connected
It is connected to horizontally disposed slider bar (10), slider bar (10) runs through fixed strip (7) by sliding mouth (8).
3. quartz sand straight-line oscillation screening machine process and treat system according to claim 2, it is characterised in that: the sliding
Stick (10) is fixedly connected with fixture block (9) far from the one end of elevating lever (5), and fixture block (9) is cylindrical structure, and fixture block (9) is straight
Diameter is greater than the width of sliding mouth (8).
4. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: the support
It is also fixedly installed on frame (1) motor reducer (4), motor reducer (4) input terminal and the output shaft of rotating electric machine (3) are fixed
Connection, motor reducer (4) output end are fixedly connected with the bottom end of a wherein reciprocating screw rod (30).
5. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: described first
Mounting blocks (14) and the second mounting blocks (15) side close to each other offer holding tank, and the two sides of sieve plate (13) each extend over
To two holding tanks.
6. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: the sieve plate
(13) top is fixedly connected with baffle (21) close to the side of the second mounting blocks (15), and baffle (21) is far from the second mounting blocks
(15) side is in contact with the inner wall of screening frame (11).
7. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: the bolt
(28) outer sheath is equipped with spring (29), and one end of spring (29) is fixedly connected with screening frame (11), the other end of spring (29)
It is fixedly connected with pulling plate (24).
8. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: the pulling plate
(24) side far from screening frame (11) is fixedly connected with pull handle (25), and rubber sleeve is installed in the outside of pull handle (25)
(26)。
9. quartz sand straight-line oscillation screening machine process and treat system according to claim 1, it is characterised in that: the installation
It is fixedly connected between case (2) and support rod (17) horizontally disposed support plate (18), the top two sides of support plate (18) are solid
Surely it is connected with the snap-gauge (19) being vertically arranged, the top of support plate (18) is placed with splicing frame between two snap-gauges (19)
(20)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787136.4A CN110465484A (en) | 2019-08-25 | 2019-08-25 | Quartz sand straight-line oscillation screening machine process and treat system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787136.4A CN110465484A (en) | 2019-08-25 | 2019-08-25 | Quartz sand straight-line oscillation screening machine process and treat system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110465484A true CN110465484A (en) | 2019-11-19 |
Family
ID=68512775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910787136.4A Pending CN110465484A (en) | 2019-08-25 | 2019-08-25 | Quartz sand straight-line oscillation screening machine process and treat system |
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| Country | Link |
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| CN (1) | CN110465484A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857037A (en) * | 2021-09-29 | 2021-12-31 | 东海县联诚光伏石英有限公司 | Screening device and screening method for high-purity quartz sand production line |
-
2019
- 2019-08-25 CN CN201910787136.4A patent/CN110465484A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113857037A (en) * | 2021-09-29 | 2021-12-31 | 东海县联诚光伏石英有限公司 | Screening device and screening method for high-purity quartz sand production line |
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Application publication date: 20191119 |