CN104607381A - Rotary screening machine for laboratory - Google Patents
Rotary screening machine for laboratory Download PDFInfo
- Publication number
- CN104607381A CN104607381A CN201510060471.6A CN201510060471A CN104607381A CN 104607381 A CN104607381 A CN 104607381A CN 201510060471 A CN201510060471 A CN 201510060471A CN 104607381 A CN104607381 A CN 104607381A
- Authority
- CN
- China
- Prior art keywords
- screen
- sieve
- shaped connector
- screen drum
- drum
- 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
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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
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- 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
- 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
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
A rotary screening machine for a laboratory comprises a machine frame, a driving motor, a U-shaped connector and a screen drum, the driving motor is connected with the machine frame through the U-shaped connector, the screen drum is composed of a sleeve type coupler, a drum body and an end cover, one end of the drum body is connected with the sleeve type coupler, the end cover is rotationally arranged at the other end of the drum body, the screen drum is inserted into a motor output shaft of the driving motor through the sleeve type coupler at one end of the screen drum, the included angle between the bottom surface of the screen drum and the horizontal plane ranges from 30 degrees to 70 degrees, the rotation axis of the screen drum and the axis of the motor output shaft coincide, a screen frame and a plurality of standard screens are placed in the screen drum, and the standard screens and the screen frame are located in the screen drum in an airtight mode. The rotary screening machine for the laboratory is simple, runs stably, generates small noise and has high screening efficiency, and screen meshes are not prone to blockage.
Description
Technical field
The invention belongs to material screening field, relate to a kind of use for laboratory rotation sieve specifically.
Background technology
Screening plant general at present has vibrating screen classifier, reciprocating screen extension set, drum-type screening machine etc. usually, these screening machines normally utilize the Relative Vibration of material and compass screen surface, make material when vibrating, the interstitial flow of material between the material of coarsegrain of small grain size goes down to be separated, due to the restriction of self-technique feature, there is following defect: 1) equipment operational shock noise is large in these screening machines; 2) not easily seal, airborne dust in screening process, dust pollution is serious; 3) screening wet or viscous material sieve aperture easily block, screening efficiency reduces; 4) equipment occupation space is large, complex structure.
Summary of the invention
Goal of the invention of the present invention:
Mainly for above-mentioned situation, for overcoming the defect of prior art, the object of the present invention be just to provide one not airborne dust, noise little, when especially sieving wet stock or viscous material, the not susceptible to plugging use for laboratory rotation sieve of sieve aperture.
Technical scheme of the present invention is:
Provide a kind of use for laboratory rotation sieve, comprise frame, drive motors, U-shaped connector and screen drum, frame is made up of a base plate and two risers, together with each riser to be vertically connected on base plate through bolt, the side of each riser is respectively equipped with diameter identical, the axis hole of dead in line, the upper surface of each riser is respectively provided with a screw hole vertical and penetrating with axis hole, closing handle is installed with in screw hole, between two risers, U-shaped connector is housed, U-shaped connector is the U-shaped frameworks of both sides with gudgeon, its end face is provided with four symmetrical through holes and an axis hole, its two sides are respectively equipped with the gudgeon matched with the axis hole of riser, the gudgeon of U-shaped connector is inserted in the axis hole of two risers, the motor output shaft of drive motors is provided with keyway, the end face of motor output shaft one end of drive motors is provided with four screw holes matched with U-shaped connector, drive motors is inserted in U-shaped connector, and motor output shaft is inserted in the axis hole of U-shaped connector, drive motors links together through four bolts and U-shaped connector, balancing boom device sealing box is fixed with between riser and base plate, balancing boom device sealing box is built with machine governor, screen drum is column type, screen drum is by case butt coupling, cylindrical shell and end cap are formed, cylindrical shell is bottom end seal, top is provided with the hollow cylinder of gas thread, the outer face of the sealed end of cylindrical shell is connected with the case butt coupling that axis overlaps with tubular axis, case butt coupling is the hollow cylinder being provided with keyway, and the external cylindrical surface of the inner cylinder face of case butt coupling and motor output shaft matches, the periphery of case butt coupling is provided with a screw hole, the axis of screw hole and the axes normal of case butt coupling, holding screw is installed with in screw hole, the gas thread end of cylindrical shell is installed with end cap, the upper surface of end cap is fixed with draw ring, the case butt coupling of screen drum through its one end is inserted on the motor output shaft of drive motors, screen frame (unit) and the box-like standard screen of multiple circle is placed with in screen drum, wherein screen frame (unit) is by screen cover pressing plate, connecting rod and sieve backing board are formed, screen cover pressing plate is the same plectane of diameter with sieve backing board, the upper surface of sieve backing board is connected with four circumferentially uniform connecting rods, connecting rod is that one end is provided with external screw thread, the other end is the rod member of optical axis, screen cover pressing plate is provided with four through holes corresponding with four connecting rods, the through hole of screen cover pressing plate on it is sleeved on four connecting rods, the standard screen that number is no less than the size coupling of two is placed with in screen frame (unit), multiple standard screen is stacked together, the sieve aperture of its standard screen is at the middle and upper levels greater than the sieve aperture of lower floor's standard screen, the top of the standard screen stacked is placed with screen cover, sieve end box is placed with bottom it.
The invention has the beneficial effects as follows:
Present device is simple, and operate steadily, noise is little, and sieve aperture not easily blocks, and screening efficiency is high, is sized streams closed, without airborne dust.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the present invention's each parts when using.
Fig. 2 is the syndeton schematic diagram of frame of the present invention and drive motors.
Fig. 3 is the syndeton schematic diagram of drive motors of the present invention and U-shaped connector.
Fig. 4 is the structural representation (enlarged drawing) of balancing boom device sealing box of the present invention.
Fig. 5 is the structural representation of screen drum of the present invention.
Fig. 6 is the structural representation of screen frame (unit) of the present invention.
Fig. 7 is the present invention's screening principle schematic when using.
Wherein: 1 is frame; 2 is drive motors; 3 is screen drum; 4 is screen frame (unit); 5 is screen cover; 6 is standard screen; 7 is sieve end box; 8 is motor output shaft; 9 is U-shaped connector; 11 is base plate; 12 is riser; 13 is closing handle; 14 is balancing boom device sealing box; 15 is machine governor; 31 is case butt coupling; 32 is cylindrical shell; 33 is end cap; 34 is holding screw; 35 is draw ring; 41 is screen cover pressing plate; 42 is connecting rod; 43 is sieve backing board; 44 is nut.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Provided by Fig. 1 to Fig. 7, the present invention includes frame, drive motors, U-shaped connector and screen drum, frame 1 is made up of a base plate 11 and two risers 12, together with each riser 12 to be vertically connected on base plate 11 through bolt, the side of each riser 12 is respectively equipped with diameter identical, the axis hole of dead in line, the upper surface of each riser 12 is respectively provided with a screw hole vertical and penetrating with axis hole, closing handle 13 is installed with in screw hole, between two risers 12, U-shaped connector 9 is housed, U-shaped connector 9 is the U-shaped frameworks of both sides with gudgeon, its end face is provided with four symmetrical through holes and an axis hole, its two sides are respectively equipped with the gudgeon matched with the axis hole of riser 12, the gudgeon of U-shaped connector 9 is inserted in the axis hole of two risers 12, the motor output shaft 8 of drive motors 2 is provided with keyway, the end face of motor output shaft 8 one end of drive motors 2 is provided with four screw holes matched with U-shaped connector 9, drive motors 2 is inserted in U-shaped connector 9, and motor output shaft 8 is inserted in the axis hole of U-shaped connector 9, drive motors 2 links together through four bolts and U-shaped connector 9, balancing boom device sealing box 14 is fixed with between riser 12 and base plate 11, balancing boom device sealing box 14 is built with machine governor 15, screen drum 3 is column type, screen drum 3 is by case butt coupling 31, cylindrical shell 32 and end cap 33 are formed, cylindrical shell 32 is bottom end seal, top is provided with the hollow cylinder of gas thread, the outer face of the sealed end of cylindrical shell 32 is connected with the case butt coupling 31 of axis and cylindrical shell 32 dead in line, case butt coupling 31 is for being provided with the hollow cylinder of keyway, and the external cylindrical surface of the inner cylinder face of case butt coupling 31 and motor output shaft 8 matches, the periphery of case butt coupling 31 is provided with a screw hole, the axis of screw hole and the axes normal of case butt coupling 31, holding screw 34 is installed with in screw hole, the gas thread end of cylindrical shell 32 is installed with end cap 33, the upper surface of end cap 33 is fixed with draw ring 35, the case butt coupling 31 of screen drum 3 through its one end is inserted on the motor output shaft 8 of drive motors 2, screen frame (unit) 4 and the box-like standard screen 6 of multiple circle is placed with in screen drum 3, wherein screen frame (unit) 4 is by screen cover pressing plate 41, connecting rod 42 and sieve backing board 43 are formed, screen cover pressing plate 41 is the same plectane of diameter with sieve backing board 43, the upper surface of sieve backing board 43 is connected with four circumferentially uniform connecting rods 42, connecting rod 42 is provided with external screw thread for one end, the other end is the rod member of optical axis, screen cover pressing plate 41 is provided with four through holes corresponding with four connecting rods 42, the through hole of screen cover pressing plate 41 on it is sleeved on four connecting rods 42, the standard screen 6 that number is no less than the size coupling of two is placed with in screen frame (unit) 4, multiple standard screen 6 is stacked together, the sieve aperture of its standard screen 6 is at the middle and upper levels greater than the sieve aperture of lower floor's standard screen 6, the top of the standard screen 6 stacked is placed with screen cover 5, sieve end box 7 is placed with bottom it.
The described bottom surface of screen drum 3 and the angle of horizontal plane are determined by U-shaped connector 9, and the preferred bottom surface of screen drum 3 and the angle of horizontal plane are between 30-70 degree.
The rotation of described screen drum 3 and the dead in line of motor output shaft 8.
Described screen cover 5, standard screen 6, sieve end box 7 and screen frame (unit) 4 are enclosed in screen drum 3, ensure that the sealing of screening process.
Embodiment one: the present invention in use, the frame 1 of screening machine is placed on the operating desk of level, drive motors 2 to be inserted in U-shaped connector 9 and to fix with bolt, again the gudgeon of U-shaped connector 9 both sides to be inserted in frame 1 and to tighten closing handle 13, screen drum 3 is sleeved on the motor output shaft 8 of drive motors 2, and tighten holding screw 34, the standard screen 6 being no less than one is stacked together from big to small successively from top to bottom according to mesh size, sieve end box 7 is placed on the bottom of multilayer standard screen 6, the material be sized is placed in the standard screen 6 of the superiors, cover screen cover 5 again, by screen cover 5, after standard screen 6 and sieve end box 7 stack, be placed on sieve backing board 43, buckle screen cover pressing plate 41, tighten the nut 44 on connecting rod 42, so just by screen cover 5, standard screen 6 and sieve end box 7 are fixed in screen frame (unit) 4, end cap 33 is unclamped and pulls down, by the screen cover 5 of screen frame (unit) 4 and Qi Nei, standard screen 6 puts into screen drum 3 together with sieve end box 7, the top of four connecting rods 42 and the gas thread of screen drum 3 are held level with both hands neat or slightly long, then spinning tightens end cap 33, ensure that screen frame (unit) 4 can not rock when rotating in screen drum 3, loosen the angle that closing handle 13 adjusts screen drum 3 and horizontal plane again, the bottom surface of screen drum 3 and horizontal plane angle (are adjusted according to material) between 30-70 degree, then closing handle 13 is tightened, be energized to drive motors 2 and use machine governor 15 to regulate the rotating speed of screen drum 3 to suitable rotating speed (the maximum line velocity speed at screen drum 3 edge is no more than 1.45m/s).Screening machine is in running, the motor output shaft 8 of drive motors 2 drives screen drum 3 and interior screen frame (unit) 4 thereof, screen cover 5, standard screen 6, sieve end box 7 rotates together, now sieve the bottom surface of end box 7 and angle certain suitable angle between 30-70 degree of horizontal plane, material in standard screen 6 every layer of sieve from standard screen 6 lower limb in rotational direction successively respectively through convolution rising area A, waterfall is settled in an area B, loopback district C, material convolution rising area A at centrifugal force, under the acting in conjunction of gravity and frictional force, large the rolling in edge and upper epidermis of particle, little the rolling in heart portion and lower floor of particle, the material being now less than sieve aperture leaks down through sieve aperture, after not risen to convolution rising area A to peak by the material leaked down, start oliquely downward waterfall settle in an area B accelerate waterfall fall, occur at the bottom of the sieve of waterfall junk material and standard screen 6 to slide or rolling friction, material is rubbed scattered further, the material being less than sieve aperture continues to leak down through sieve aperture, and do not got back to loopback district C by the material leaked down, then convolution rising area A is again risen to, along with the prolongation of rotation time, material is classified into required granularity by the size of standard screen 6 sieve aperture in multiple standard screen 6, raw meal particle size in the standard screen 6 on top is large, raw meal particle size in the standard screen 6 of bottom is little, due in screening process, oscillation phenomenon is not had to occur, and screening completes in airtight screen drum 3, therefore without airborne dust, noise is little.During DE device end, power-off, and unclamp closing handle 13, end cap 33 is pulled down, then screen frame (unit) 4 is taken out, screen cover 5 now in it, standard screen 6 and sieve end box 7 by together with take out, unclamp the nut 44 of connecting rod 43 upper end, screen cover pressing plate 41 is taken off, more multiple standard screen 6 and sieve end box 7 are taken out, can obtain the material after classification, the adjustment bottom surface of screen drum 3 and the angle of horizontal plane can optimize screening efficiency and effect.
Present device is simple, and operate steadily, noise is little, and sieve aperture not easily blocks, and screening efficiency is high, is sized streams closed, without airborne dust.
Claims (4)
1. a use for laboratory rotation sieve, comprise frame, drive motors, U-shaped connector and screen drum, it is characterized in that, frame (1) is made up of a base plate (11) and two risers (12), together with each riser (12) to be vertically connected on base plate (11) through bolt, the side of each riser (12) is respectively equipped with diameter identical, the axis hole of dead in line, the upper surface of each riser (12) is respectively provided with a screw hole vertical and penetrating with axis hole, closing handle (13) is installed with in screw hole, between two risers (12), U-shaped connector (9) is housed, U-shaped connector (9) is for both sides are with the U-shaped framework of gudgeon, its end face is provided with four symmetrical through holes and an axis hole, its two sides are respectively equipped with the gudgeon matched with the axis hole of riser (12), the gudgeon of U-shaped connector (9) is inserted in the axis hole of two risers (12), drive motors (2) motor output shaft (8) is provided with keyway, the end face of motor output shaft (8) one end of drive motors (2) is provided with four screw holes matched with U-shaped connector (9), drive motors (2) is inserted in U-shaped connector (9), and motor output shaft (8) is inserted in the axis hole of U-shaped connector (9), drive motors (2) links together through four bolts and U-shaped connector (9), balancing boom device sealing box (14) is fixed with between riser (12) and base plate (11), balancing boom device sealing box (14) is built with machine governor (15), screen drum (3) is column type, screen drum (3) is by case butt coupling (31), cylindrical shell (32) and end cap (33) are formed, cylindrical shell (32) is bottom end seal, top is provided with the hollow cylinder of gas thread, the outer face of the sealed end of cylindrical shell (32) is connected with the case butt coupling (31) of axis and cylindrical shell (32) dead in line, case butt coupling (31) is for being provided with the hollow cylinder of keyway, and the external cylindrical surface of the inner cylinder face of case butt coupling (31) and motor output shaft (8) matches, the periphery of case butt coupling (31) is provided with a screw hole, the axes normal of the axis of screw hole and case butt coupling (31), holding screw (34) is installed with in screw hole, the gas thread end of cylindrical shell (32) is installed with end cap (33), the upper surface of end cap (33) is fixed with draw ring (35), sieve bucket (3) case butt coupling (31) through its one end is inserted on the motor output shaft (8) of drive motors (2), screen frame (unit) (4) and the box-like standard screen of multiple circle (6) is placed with in screen drum (3), wherein screen frame (unit) (4) is by screen cover pressing plate (41), connecting rod (42) and sieve backing board (43) are formed, screen cover pressing plate (41) is the same plectane of diameter with sieve backing board (43), the upper surface of sieve backing board (43) is connected with four circumferentially uniform connecting rods (42), connecting rod (42) is provided with external screw thread for one end, the other end is the rod member of optical axis, screen cover pressing plate (41) is provided with four through holes corresponding with four connecting rods (42), screen cover pressing plate (41) through hole on it is sleeved on four connecting rods (42), the standard screen (6) that number is no less than the size coupling of two is placed with in screen frame (unit) (4), multiple standard screen (6) is stacked together, the sieve aperture of its standard screen (6) is at the middle and upper levels greater than the sieve aperture of lower floor's standard screen (6), the top of the standard screen (6) stacked is placed with screen cover (5), sieve end box (7) is placed with bottom it.
2. a kind of use for laboratory rotation sieve according to claim 1, it is characterized in that, the described bottom surface of screen drum (3) and the angle of horizontal plane are determined by U-shaped connector (9), and the bottom surface of preferred screen drum (3) and the angle of horizontal plane are between 30-70 degree.
3. a kind of use for laboratory rotation sieve according to claim 1, is characterized in that, the rotation of described screen drum (3) and the dead in line of motor output shaft (8).
4. a kind of use for laboratory rotation sieve according to claim 1, is characterized in that, described screen cover (5), standard screen (6), sieve end box (7) and screen frame (unit) (4) are enclosed in screen drum (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060471.6A CN104607381B (en) | 2015-02-05 | 2015-02-05 | A kind of use for laboratory rotary screen extension set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060471.6A CN104607381B (en) | 2015-02-05 | 2015-02-05 | A kind of use for laboratory rotary screen extension set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104607381A true CN104607381A (en) | 2015-05-13 |
| CN104607381B CN104607381B (en) | 2016-05-11 |
Family
ID=53142177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060471.6A Active CN104607381B (en) | 2015-02-05 | 2015-02-05 | A kind of use for laboratory rotary screen extension set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104607381B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728315A (en) * | 2016-04-29 | 2016-07-06 | 郑州大学 | Continuous feeding-discharging rotary screening machine |
| CN107597546A (en) * | 2017-09-30 | 2018-01-19 | 安徽理工大学 | A kind of Separate Fine-grained Minerals efficient classification device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004010350U1 (en) * | 2003-08-26 | 2004-09-09 | Büdel, Gerd | Sieve for earth and compost has cylindrical sieve screen driven by cement mixer motor on frame |
| CN201154354Y (en) * | 2007-12-28 | 2008-11-26 | 天津市明发输送机械有限公司 | Rotary screen with self-cleaning mechanism |
| AT509612B1 (en) * | 2010-03-29 | 2012-02-15 | Sonneck Ges M B H | DEVICE FOR PROCESSING GARDEN, EARTH AND THE SAME |
| CN202778932U (en) * | 2012-07-27 | 2013-03-13 | 易明付 | Inclined type rotary drum vibrating screen |
| CN203725371U (en) * | 2014-01-24 | 2014-07-23 | 刘权逸 | Laboratory soil sample particle screening device |
| CN104259091A (en) * | 2014-09-22 | 2015-01-07 | 江苏大学 | Separated double-layer rotary drum spiral screening device and method |
| CN204470051U (en) * | 2015-02-05 | 2015-07-15 | 郑州大学 | A kind of use for laboratory rotation sieve |
-
2015
- 2015-02-05 CN CN201510060471.6A patent/CN104607381B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004010350U1 (en) * | 2003-08-26 | 2004-09-09 | Büdel, Gerd | Sieve for earth and compost has cylindrical sieve screen driven by cement mixer motor on frame |
| CN201154354Y (en) * | 2007-12-28 | 2008-11-26 | 天津市明发输送机械有限公司 | Rotary screen with self-cleaning mechanism |
| AT509612B1 (en) * | 2010-03-29 | 2012-02-15 | Sonneck Ges M B H | DEVICE FOR PROCESSING GARDEN, EARTH AND THE SAME |
| CN202778932U (en) * | 2012-07-27 | 2013-03-13 | 易明付 | Inclined type rotary drum vibrating screen |
| CN203725371U (en) * | 2014-01-24 | 2014-07-23 | 刘权逸 | Laboratory soil sample particle screening device |
| CN104259091A (en) * | 2014-09-22 | 2015-01-07 | 江苏大学 | Separated double-layer rotary drum spiral screening device and method |
| CN204470051U (en) * | 2015-02-05 | 2015-07-15 | 郑州大学 | A kind of use for laboratory rotation sieve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728315A (en) * | 2016-04-29 | 2016-07-06 | 郑州大学 | Continuous feeding-discharging rotary screening machine |
| CN107597546A (en) * | 2017-09-30 | 2018-01-19 | 安徽理工大学 | A kind of Separate Fine-grained Minerals efficient classification device |
| CN107597546B (en) * | 2017-09-30 | 2023-10-03 | 安徽理工大学 | High-efficient grading plant of fine mineral |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104607381B (en) | 2016-05-11 |
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Effective date of registration: 20190314 Address after: 450001 First Floor, Zone C, Building 1, No. 96 Ruida Road Venture Center, Zhengzhou High-tech Industrial Development Zone, Henan Province Patentee after: Henan Zhurong Intelligent Technology Co., Ltd. Address before: 450000 100 science Avenue, Zhengzhou high tech Zone, Henan Patentee before: Zhengzhou University |
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