CN113083661B - Rubber antioxidant product grading device and grading method - Google Patents
Rubber antioxidant product grading device and grading method Download PDFInfo
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- CN113083661B CN113083661B CN202110315544.7A CN202110315544A CN113083661B CN 113083661 B CN113083661 B CN 113083661B CN 202110315544 A CN202110315544 A CN 202110315544A CN 113083661 B CN113083661 B CN 113083661B
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- cuboid
- sieve
- rubber antioxidant
- roller
- fixed
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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
- B07B1/26—Revolving drums with additional axial or radial movement of the drum
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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
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses a rubber antioxidant product grading device and a grading method, wherein the device comprises a tiltable platform, a rotatable roller is arranged on the tiltable platform, and a plurality of layers of cuboid sieves which are mutually nested are sequentially arranged in the roller; the invention can improve the quantity of the rubber antioxidant products contacting the sieve pores in unit time and greatly improve the screening and grading efficiency.
Description
Technical Field
The invention relates to the technical field of rubber antioxidant production, in particular to a rubber antioxidant product grading device and a grading method.
Background
After the rubber antioxidant is produced, products with different specifications and sizes need to be classified, and two methods are commonly used at present: the first is to carry on the classified screening directly through multiple level screen meshes or sieve plates, the problem that this kind of apparatus exists is, the contact surface with screen mesh or sieve plate of product each time is a side, the product quantity contacting the sieve mesh in unit time is small, the screening speed is slower, and need to take each layer of screen mesh or sieve plate off manually while discharging, then unload the product; the second kind is to screen and classify through a rotary screen section of thick bamboo, and this kind of device generally adds the spiral orbit at a rotary screen section of thick bamboo inner wall, and along with the rotation of a rotary screen section of thick bamboo, the material can remove the limit and filter, and the problem that this kind of device exists is that the speed that the material removed in a rotary screen section of thick bamboo is very slow, and the material also can only contact the single face sieve mesh all the time, and the product volume that contacts the sieve mesh in the unit interval is also less, and screening efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects and provide a rubber antioxidant product grading device and a grading method, which can improve the quantity of rubber antioxidant products contacting with sieve pores in unit time and improve the screening and grading efficiency.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a rubber antioxidant product grading plant, includes the tilting platform, be equipped with rotatable cylinder on the tilting platform, be equipped with the cuboid sieve that the multilayer nestification is mutually in the cylinder together in proper order.
Preferably, the roller and the plurality of rectangular screens are fixedly connected with each other through a bracket.
Preferably, both ends are open around the cuboid sieve, and a plurality of sieve meshes have evenly been seted up to four sides, and the sieve mesh aperture that is located the cuboid sieve of inlayer is greater than the sieve mesh aperture that is located outer cuboid sieve.
Preferably, the cylinder both sides cover is established and is fixed in first bearing inner circle, first bearing outer lane passes through fixed block and tiltable platform top fixed connection, and it is inboard that the cylinder middle part cover is established and is fixed in the ring gear, the ring gear outside meshes with the straight-teeth gear, the straight-teeth gear is fixed in on the servo motor output shaft, the servo motor bottom is fixed in on the tiltable platform.
Preferably, the cylinder both ends are equipped with preceding closing cap and back closing cap respectively, set up on the preceding closing cap with inlet pipe one end complex through-hole, the inlet pipe is just to inlayer cuboid sieve port, the inlet pipe other end is spacing in the second bearing inner circle, the second bearing outer lane is connected with filling tube one end, the filling tube top is equipped with the toper feed inlet, second bearing outer lane and filling tube all are fixed in the support column top, the support column bottom is fixed in on the tilting platform.
Preferably, one end of the tiltable platform is hinged to one side of the base plate, the other end of the tiltable platform is matched with an arc-shaped guide rod fixed to the other side of the base plate, and a telescopic device is hinged between the bottom of the tiltable platform and the top of the base plate.
Preferably, cuboid sieve rear side and discharging pipe one end intercommunication, the discharging pipe other end is worn out to the cylinder outside and with spiral cover screw-thread fit.
Preferably, the outer side of the discharge pipe is in threaded fit with the inlet end of a telescopic hose, and the outlet end of the telescopic hose extends into the material collecting barrel.
In addition, the invention also discloses a grading method of the rubber antioxidant product grading device, which comprises the following steps: it comprises the following steps:
step 1): adding a rubber antioxidant product to be classified through a feeding pipe, wherein the rubber antioxidant product firstly enters an innermost layer cuboid sieve through a feeding pipe;
step 2): starting a servo motor to enable the roller to rotate stably, enabling the multiple layers of cuboid sieves to rotate together, and simultaneously starting a telescopic device, wherein the telescopic rod of the telescopic device can be extended or contracted periodically to enable the multiple layers of cuboid sieves to incline leftwards and rightwards periodically, so that rubber antioxidant products can be distributed over the whole cuboid sieve;
step 3): when the cuboid sieve rotates, the rubber antioxidant product is in contact with sieve pores on four sides of the cuboid sieve, the rubber antioxidant product is screened from the inner layer cuboid sieve to the outer layer cuboid sieve step by step, and the servo motor is stopped after screening for a period of time;
step 4): starting the telescopic device again, enabling the inclinable platform to incline so that the roller and the cuboid sieve on the inner side incline for a certain angle, unscrewing the screw cap, and installing the telescopic hose of the corresponding material collecting barrel on the outer side of the corresponding material discharging pipe;
step 5): and the servo motor is started again, so that the roller rotates by a certain angle, the discharge pipe is positioned at the bottommost side, and then the servo motor is controlled to periodically rotate forwards and backwards, so that the roller periodically rotates clockwise by a certain angle and anticlockwise by a certain angle, and different grades of rubber antioxidant products enter the corresponding material collecting barrels along the corresponding discharge pipe and the telescopic hose.
The invention has the beneficial effects that: when the traditional cylindrical screen rotates, materials only can walk on the bottom surface of the screen, and the friction force between the materials and the rotating screen is not enough to throw the materials away, but when the cuboid screen rotates, the inner side corners of the cuboid screen can continuously push the materials to move, so that the materials can be continuously thrown away, the materials can be spread over the areas of the four-side screen holes of the cuboid screen, more materials can contact the screen holes in the same time, the quantity of rubber antioxidant products contacting the screen holes in unit time is increased, and the screening and grading efficiency is greatly improved; in addition, through the inclination process of the inclinable platform, the materials can slide in the cuboid sieve and be uniformly distributed, and the screening efficiency is further improved; the inclination of the inclinable platform can accelerate the discharging process; and finally, a plurality of discharging pipes which do not interfere with each other are arranged, so that the discharging processes are not interfered with each other.
Drawings
FIG. 1 is a schematic perspective view of a rubber antioxidant product classifying device;
FIG. 2 is a schematic perspective view of the area of the roller shown in FIG. 1;
FIG. 3 is a schematic perspective view of another perspective view of the area of the roller of FIG. 1;
FIG. 4 is a schematic perspective view of the drum connected to a rectangular screen;
FIG. 5 is a schematic perspective view of a rectangular parallelepiped sieve.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
As shown in fig. 1 to 5, the rubber antioxidant product grading device comprises an inclinable platform 1, wherein a rotatable roller 2 is arranged on the inclinable platform 1, and a plurality of layers of cuboid sieves 3 which are mutually nested together are sequentially arranged in the roller 2.
Preferably, the drum 2 and the plurality of rectangular parallelepiped sieves 3 are fixedly connected to each other by a bracket 4. Connect into a whole each other between 2 with cylinder and cuboid sieve 3, between a plurality of cuboid sieves 3 through support 4, can rotate in step.
Preferably, both ends are open around cuboid sieve 3, and a plurality of sieve meshes 5 have evenly been seted up to four sides, and 5 apertures in the sieve mesh that are located the cuboid sieve 3 of inlayer are greater than 5 apertures in the sieve mesh that are located outer cuboid sieve 3. The material firstly enters the cuboid sieve 3 on the inner layer, when the cuboid sieve 3 rotates, the rubber antioxidant with large particle size is intercepted in the cuboid sieve 3 on the inner layer due to the action of centrifugal force, and the rubber antioxidant with small particle size enters the cuboid sieve 3 on the outer layer along the sieve pores 5, so that the particle size of the intercepted rubber antioxidant in the cuboid sieve 3 is gradually reduced from inside to outside through step-by-step screening and grading. Traditional cylinder screen cloth is when rotatory, and the material can only walk in the screen cloth bottom surface, and its frictional force with the material when rotatory is not enough to throw away the material, and this kind of cuboid sieve 3 of this patent is when rotatory, and its inboard corner can constantly promote the material when rotatory and remove, can constantly throw away the material like this for the material can spread throughout the four sides sieve mesh 5 regions of cuboid sieve 3, and consequently more materials can contact the sieve mesh at same time, have improved screening efficiency greatly.
Preferably, 2 both sides cover of cylinder are established and are fixed in 6 inner circles of first bearing, 6 outer circles of first bearing pass through fixed block 7 and 1 top fixed connection of tilting platform, and 2 middle part covers of cylinder are established and are fixed in 8 inboards of ring gear, 8 outsides of ring gear and the meshing of spur gear 9, spur gear 9 is fixed in on the 10 output shafts of servo motor, servo motor 10 bottom is fixed in on the tilting platform 1. After the design, when servo motor 10 during operation, it drives spur gear 9 rotatory, and then drives ring gear 8 and rotates to make cylinder 2 rotate, because the limiting displacement of the first bearing 6 in cylinder 2 both sides, so cylinder 2 can rotate steadily.
Preferably, 2 both ends of cylinder are equipped with preceding closing cap 11 and back closing cap 12 respectively, seted up on the preceding closing cap 11 with 13 one end complex through-holes of inlet pipe, inlet pipe 13 is just to 3 ports of inlayer cuboid sieve, the inlet pipe 13 other end is spacing in the 14 inner circles of second bearing, the 14 outer circles of second bearing is connected with 15 one ends of filling tube, 15 tops of filling tube are equipped with the toper feed inlet, the 16 tops of support column are all fixed in to the 14 outer circles of second bearing and filling tube 15, 16 bottoms of support column are fixed in on the tiltable platform 1. Because the roller 2 can rotate, and the feeding pipe 15 is a static device, the relative rotation can exist between the feeding pipe 15 and the roller 2, in order to solve the problem, the problem is solved by additionally arranging the second bearing 14, the inner ring of the second bearing 14 is in butt joint with the feeding pipe 13, and the outer ring of the second bearing 14 is in butt joint with the feeding pipe 15, so that the roller 2 can feed while rotating.
Preferably, one end of the tiltable platform 1 is hinged with one side of the bottom plate 17, the other end of the tiltable platform 1 is matched with an arc-shaped guide rod 18 fixed on the other side of the bottom plate 17, and a telescopic device 23 is hinged between the bottom of the tiltable platform 1 and the top of the bottom plate 17. The inclined process of the inclinable platform 1 can be more stable through the arc-shaped guide rod 18, and the arc-shaped guide rod 18 can play a role in guiding and supporting.
Preferably, cuboid sieve 3 rear side and 19 one ends intercommunication of discharging pipe, the discharging pipe 19 other end is worn out the cylinder 2 outside and with spiral cover 20 screw-thread fit. Cuboid sieve 3 of every layer all can carry out ejection of compact process through discharging pipe 19 when the ejection of compact, like this embodiment, three discharging pipe 19's the ejection of compact process each other noninterference.
Preferably, the outlet pipe 19 is screwed to the inlet end of the flexible hose 21, and the outlet end of the flexible hose 21 extends into the collecting cylinder 22. Because of the flexible and flexible characteristics of the flexible hose 21, the telescopic hose can swing along with the swing of the discharge pipe 19, and in addition, in order to prevent the flexible hose 21 from twisting, a bearing can be additionally arranged at the connecting position of the flexible hose 21 and the material collecting barrel 22, so that the flexible hose 21 can be prevented from being damaged by the twisting.
In addition, the invention also discloses a grading method of the rubber antioxidant product grading device, which comprises the following steps: it comprises the following steps:
step 1): a rubber antioxidant product to be classified is added through a feeding pipe 15, and the rubber antioxidant product firstly enters the innermost layer cuboid screen 3 through a feeding pipe 13;
step 2): starting a servo motor 10 to enable the roller 2 to rotate stably, enabling the multilayer cuboid sieve 3 to rotate together, and simultaneously starting a telescopic device 23, wherein the telescopic rod of the telescopic device can periodically extend or contract to enable the multilayer cuboid sieve 3 to periodically tilt left and right, so that the rubber antioxidant product can be spread over the whole cuboid sieve 3;
step 3): when the cuboid sieve 3 rotates, the rubber antioxidant product is contacted with the sieve pores on four sides of the cuboid sieve 3, the inner layer cuboid sieve 3 screens the outer layer cuboid sieve 3 step by step, and the servo motor 10 is stopped after the screening is carried out for a period of time;
step 4): starting the telescopic device 23 again, inclining the inclinable platform 1 to enable the roller 2 and the cuboid screen 3 on the inner side to incline for a certain angle, unscrewing the screw cap 20, and installing the telescopic hose 21 of the corresponding material collecting barrel 22 on the outer side of the corresponding material discharging pipe 19; in this embodiment, the telescoping device 23 can select for use hydraulic telescoping rod structure, and it can drive the certain angle of the slope of inclinable platform 1 to can accelerate cylinder 2 and the inboard cuboid sieve 3 process of unloading.
Step 5): and (3) restarting the servo motor 10 to enable the roller 2 to rotate by a certain angle, so that the discharge pipe 19 is positioned at the bottommost side, and then controlling the servo motor 10 to periodically rotate forwards and backwards, so that the roller 2 periodically rotates clockwise by a certain angle and anticlockwise by a certain angle, and different grades of rubber antioxidant products enter the corresponding material collecting barrels 22 along the corresponding discharge pipes 19 and the telescopic hoses 21. In this embodiment, if the servo motor 10 is controlled to periodically rotate forward by 15 degrees and then rotate backward by 15 degrees, the material in the drum 2 and the cuboid screen 3 on the inner side can be shaken, and the discharging process is further accelerated.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. A rubber antioxidant product grading plant, includes tiltable platform (1), its characterized in that: the tiltable platform (1) is provided with a rotatable roller (2), and a plurality of layers of rectangular screens (3) which are mutually nested are sequentially arranged in the roller (2); the roller (2) and the cuboid sieves (3) are fixedly connected with each other through a support (4); both ends are open around cuboid sieve (3), and a plurality of sieve meshes (5) have evenly been seted up to four sides, and sieve mesh (5) aperture that is located cuboid sieve (3) on inlayer is greater than sieve mesh (5) aperture that is located outer cuboid sieve (3).
2. The rubber antioxidant product grading device according to claim 1, wherein: cylinder (2) both sides cover is established and is fixed in first bearing (6) inner circle, first bearing (6) outer lane is established through fixed block (7) and tiltable platform (1) top fixed connection, and cylinder (2) middle part cover is established and is fixed in ring gear (8) inboard, ring gear (8) outside and straight-teeth gear (9) meshing, straight-teeth gear (9) are fixed in on servo motor (10) output shaft, servo motor (10) bottom is fixed in on tiltable platform (1).
3. The rubber antioxidant product grading device according to claim 1, wherein: cylinder (2) both ends are equipped with preceding closing cap (11) and back closing cap (12) respectively, seted up on preceding closing cap (11) with inlet pipe (13) one end complex through-hole, inlet pipe (13) are just to innermost cuboid sieve (3) port, the inlet pipe (13) other end is spacing in second bearing (14) inner circle, second bearing (14) outer lane is connected with filling tube (15) one end, filling tube (15) top is equipped with the toper feed inlet, second bearing (14) outer lane and filling tube (15) all are fixed in support column (16) top, support column (16) bottom is fixed in on tiltable platform (1).
4. The rubber antioxidant product classifying device according to claim 1, wherein: one end of the tiltable platform (1) is hinged to one side of the base plate (17), the other end of the tiltable platform (1) is matched with an arc-shaped guide rod (18) fixed to the other side of the base plate (17), and a telescopic device (23) is hinged between the bottom of the tiltable platform (1) and the top of the base plate (17).
5. The rubber antioxidant product classifying device according to claim 1, wherein: cuboid sieve (3) rear side and discharging pipe (19) one end intercommunication, discharging pipe (19) other end are worn out the cylinder (2) outside and with spiral cover (20) screw-thread fit.
6. The rubber antioxidant product classifying device according to claim 5, wherein: discharging pipe (19) outside and scalable hose (21) entrance point screw-thread fit, scalable hose (21) exit end stretches into in the aggregate cylinder (22).
7. A method for classifying a rubber antioxidant product as defined in any one of claims 1 to 6, wherein: it comprises the following steps:
step 1): rubber antioxidant products to be classified are added through a feeding pipe (15), and enter the innermost layer cuboid screen (3) through a feeding pipe (13);
step 2): starting a servo motor (10) to enable a roller (2) to rotate stably, enabling a plurality of layers of cuboid sieves (3) to rotate together, and simultaneously starting a telescopic device (23), wherein the telescopic rod of the telescopic device can periodically extend or contract to enable the plurality of layers of cuboid sieves (3) to periodically tilt left and right, so that rubber antioxidant products can be spread over the whole cuboid sieves (3);
step 3): when the cuboid sieve (3) rotates, the rubber antioxidant product is in contact with sieve pores on four sides of the cuboid sieve (3), the inner layer cuboid sieve (3) screens the outer layer cuboid sieve (3) step by step, and the servo motor (10) is stopped after the screening is carried out for a period of time;
step 4): starting the telescopic device (23) again, enabling the inclinable platform (1) to incline so that the roller (2) and the cuboid screen (3) on the inner side incline for a certain angle, unscrewing the screw cap (20), and installing the telescopic hose (21) of the corresponding material collecting barrel (22) on the outer side of the corresponding material discharging pipe (19);
and step 5): and (2) restarting the servo motor (10) again to enable the roller (2) to rotate by a certain angle, enabling the discharge pipe (19) to be located at the bottommost side, then controlling the servo motor (10) to periodically rotate forwards and backwards, enabling the roller (2) to periodically rotate clockwise by a certain angle and anticlockwise by a certain angle, and enabling different grades of rubber antioxidant products to enter the corresponding material collecting barrels (22) along the corresponding discharge pipes (19) and the telescopic hoses (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110315544.7A CN113083661B (en) | 2021-03-24 | 2021-03-24 | Rubber antioxidant product grading device and grading method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315544.7A CN113083661B (en) | 2021-03-24 | 2021-03-24 | Rubber antioxidant product grading device and grading method |
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| CN113083661A CN113083661A (en) | 2021-07-09 |
| CN113083661B true CN113083661B (en) | 2023-03-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005048423B4 (en) * | 2005-10-10 | 2007-10-04 | Joachim Krause | Device for separating solids from liquid media |
| CN201799395U (en) * | 2010-09-19 | 2011-04-20 | 山东海韵生态纸业有限公司 | Drum sieve |
| CN105834089B (en) * | 2016-05-27 | 2018-11-27 | 浙江方远新材料股份有限公司 | A kind of stagewise cylinder screen device of sand gradation separation |
| CN208191207U (en) * | 2018-03-29 | 2018-12-07 | 兰州亿天盛农副产品精选设备有限公司 | A kind of seed size category filter device |
| CN209061544U (en) * | 2018-10-12 | 2019-07-05 | 云南盛衍种业有限公司 | A kind of combined type maize seed grading machine |
| CN209825665U (en) * | 2018-12-14 | 2019-12-24 | 西安理工大学 | Inclinable classroom drawing table |
| CN210647181U (en) * | 2019-08-29 | 2020-06-02 | 广西王味螺食品科技有限公司 | Food processing sieve material device |
| CN112387595B (en) * | 2020-09-30 | 2021-11-26 | 湖南省展望生物科技发展有限公司 | Rapeseed vibration screening device for vegetable oil production and using method thereof |
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Denomination of invention: A grading device and method for rubber antioxidant products Effective date of registration: 20230621 Granted publication date: 20230324 Pledgee: Yichang financing guarantee Group Co.,Ltd. Pledgor: Yichang Xingchun Chemical Co.,Ltd. Registration number: Y2023980044703 |