CN217069604U - Multistage sorting facilities is used in talcum powder production of abundant unloading - Google Patents

Multistage sorting facilities is used in talcum powder production of abundant unloading Download PDF

Info

Publication number
CN217069604U
CN217069604U CN202220699422.2U CN202220699422U CN217069604U CN 217069604 U CN217069604 U CN 217069604U CN 202220699422 U CN202220699422 U CN 202220699422U CN 217069604 U CN217069604 U CN 217069604U
Authority
CN
China
Prior art keywords
box
talcum powder
collecting
screening
close
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.)
Active
Application number
CN202220699422.2U
Other languages
Chinese (zh)
Inventor
曹稀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Hengfeng New Building Materials Co ltd
Original Assignee
Hubei Hengfeng New Building Materials Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hubei Hengfeng New Building Materials Co ltd filed Critical Hubei Hengfeng New Building Materials Co ltd
Priority to CN202220699422.2U priority Critical patent/CN217069604U/en
Application granted granted Critical
Publication of CN217069604U publication Critical patent/CN217069604U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

The utility model discloses a but multistage sorting equipment is used in talcum powder production of abundant unloading, the power distribution box comprises a box body, the top fixed mounting of box has the inlet pipe, the box is close to the surface of its bottom and has seted up the discharge gate, the inner wall slidable mounting that the box is close to the discharge gate has a collection box, the surface of box one side has been seted up and has been collected the mouth, collect the inner wall rotation of mouth and install sealing door, it installs a plurality of backing rolls, a plurality of to rotate between the inner wall of the relative both sides of box the backing roll is the range of slash direction, and is a plurality of the top of backing roll is equipped with the screening board, the even fixed mounting of upper surface of screening board has a plurality of blend stops. The utility model discloses a collect the box and save the great talcum powder of granule to collect the great talcum powder of granule, avoid the great talcum powder of granule to block up the mesh on the screening board, influence the unloading speed of talcum powder, guarantee that the talcum powder can fully unload.

Description

Talcum powder production of abundant material is with multistage sorting facilities
Technical Field
The utility model relates to a talcum powder production technical field especially relates to a but multistage sorting facilities is used in talcum powder production of abundant unloading.
Background
Talc is a common silicate mineral, generally in the form of blocks, leaves, fibers or radial, and is white or off-white in color. Talc is used in many applications, such as refractory materials, medicines, paper making, fillers for rubber, pesticide absorbents, leather coatings, cosmetic materials, carving materials, and the like.
In the talcum powder course of working, grind talcum through the milling machine earlier, obtain the talcum powder, the talcum powder that obtains of grinding needs to use the sorter to sieve the powder, but at the screening in-process, the great talcum powder of granule can block up and live the screen cloth, influences the ejection of compact speed of talcum powder, can not the abundant ejection of compact.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a multi-stage separation device for producing talcum powder capable of fully discharging materials.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a but multistage sorting facilities is used in talcum powder production of abundant unloading, comprises a box body, the top fixed mounting of box has the inlet pipe, the box is close to the surface of its bottom and has seted up the discharge gate, the inner wall slidable mounting that the box is close to the discharge gate has a material collecting box, the surface of box one side has been seted up and has been collected the mouth, collect the inner wall rotation of mouth and install sealing door, rotate between the inner wall of the relative both sides of box and install a plurality of backing rolls, it is a plurality of the backing roll is arranged for the slash direction, and is a plurality of the top of backing roll is equipped with the screening board, the even fixed mounting of upper surface of screening board has a plurality of blend stops, the screening board is equipped with the collection mechanism near the upper surface of collecting one side, the inside of box is equipped with pushing mechanism.
As a further scheme of the utility model, pushing mechanism installs the pivot between the relative both sides inner wall of box including rotating, the pivot is close to its middle position fixed mounting and has the cam, the screening board is kept away from the lower fixed surface who collects the mouth and is installed the push pedal, the cam offsets with the surface of push pedal.
As a further aspect of the present invention, the outer fixed surface of the box body is provided with a motor, and the output end of the motor runs through the outer surface of the box body and is fixedly mounted with one end of the rotating shaft.
As a further aspect of the utility model, collect the mechanism including running through and offer in the screening board and be close to the rectangular channel of collecting mouthful one side upper surface, the inner wall of rectangular channel is inserted and is equipped with the installation piece, the last fixed surface of installation piece installs and collects the box, collect the box and keep away from one side of collecting the mouth and set up for the opening, the installation piece is made for magnetic material.
As a further proposal of the utility model, the outer surface of the collecting box is provided with a plurality of filtering holes.
As a further proposal of the utility model, the screening plate is kept away from the upper surface fixed mounting who collects mouthful one side and is equipped with the baffle.
As a further proposal of the utility model, the outer fixed surface of the sealing door is provided with a magnetic block, and the box body is made of ferromagnetic material.
The utility model has the advantages that:
1. the cam that drives fixed mounting in the pivot through the motor rotates, make the cam promote the push pedal of screening board lower surface fixed mounting, make the push pedal drive the screening board and remove on a plurality of backing rolls, because a plurality of backing rolls are the slash direction and arrange, make the cam promote the peak back to the backing roll with the screening board, the screening board can collect mouthful removal to under its self action of gravity, thereby make the screening board can be at box reciprocating motion, so that the screening board screens its surperficial talcum powder.
2. Store the great talcum powder of granule through collecting the box to collect the great talcum powder of granule, avoid the great talcum powder of granule to block up the mesh on the screening board, influence the unloading speed of talcum powder, guarantee that the talcum powder can fully be unloaded.
3. Set up a plurality of blend stops through the upper surface at the screening board for the blend stop can slow down the speed that the talcum powder removed to collecting box department on the screening board, makes the talcum powder on the screening board can obtain abundant screening, avoids qualified talcum powder also to roll in collecting the box.
Drawings
FIG. 1 is a schematic structural view of a multi-stage separation apparatus for producing talc powder capable of sufficiently discharging materials according to the present invention;
FIG. 2 is a schematic view of a cross-sectional structure of a multi-stage separation device for producing talcum powder capable of fully discharging materials according to the present invention;
FIG. 3 is a schematic view of a partial structure of a sieving plate of a multi-stage separation device for producing talcum powder capable of fully discharging materials according to the present invention;
FIG. 4 is a schematic diagram of a side view structure of a multi-stage separation device for producing talcum powder capable of fully discharging materials according to the present invention;
fig. 5 is the utility model provides a but multistage sorting facilities's for talcum powder production sealing door structure sketch map of abundant unloading.
In the figure: 1. a box body; 2. a collecting port; 3. a discharge port; 4. a feed pipe; 5. a material collecting box; 6. a sealing door; 7. a rotating shaft; 8. a support roller; 9. a screening plate; 10. blocking strips; 11. a baffle plate; 12. a rectangular groove; 13. a collection box; 14. mounting blocks; 15. a filtration pore; 16. a motor; 17. a magnetic block; 18. a cam; 19. a push plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Referring to fig. 1-4, a but multistage sorting facilities is used in talcum powder production of abundant unloading, comprising a box body 1, the top fixed mounting of box 1 has inlet pipe 4, box 1 has seted up discharge gate 3 near the surface of its bottom, box 1 has collection box 5 near the inner wall slidable mounting of discharge gate 3, the surface of box 1 one side has been seted up and has been collected mouthful 2, collect the inner wall rotation of mouthful 2 and install sealing door 6, rotate between the inner wall of the relative both sides of box 1 and install a plurality of backing rolls 8, a plurality of backing rolls 8 are the range of slash direction, the top of a plurality of backing rolls 8 is equipped with screening board 9, the both sides of screening board 9 and the inner wall slidable mounting of box 1, the even fixed mounting of upper surface of screening board 9 has a plurality of blend stops 10, screening board 9 is close to the upper surface of collecting mouthful 2 one side and is equipped with collection mechanism, the inside of box 1 is equipped with pushing mechanism.
In this embodiment, pushing mechanism includes rotating shaft 7 rotatably installed between the inner walls of the two opposite sides of box 1, rotating shaft 7 is close to its middle position and fixedly installed with cam 18, sieving plate 9 is far away from the lower surface of collecting opening 2 and fixedly installed with push plate 19, and cam 18 offsets with the outer surface of push plate 19.
In this embodiment, the outer surface of the box 1 is fixedly provided with the motor 16, and the output end of the motor 16 penetrates through the outer surface of the box 1 and is fixedly installed with one end of the rotating shaft 7.
In this embodiment, collect the mechanism including running through and offering in screening board 9 and being close to the rectangular channel 12 of collecting mouthful 2 one side upper surface, the inner wall of rectangular channel 12 is inserted and is equipped with installation piece 14, and the last fixed surface of installation piece 14 installs and collects box 13, collects box 13 and keeps away from one side of collecting mouthful 2 and set up for the opening, and installation piece 14 makes for magnetic material, and screening board 9 makes for iron material.
In this embodiment, the outer surface of the collecting box 13 is perforated with a plurality of filtering holes 15.
In this embodiment, the upper surface of the sieving plate 9 far from the collecting port 2 is fixedly provided with a baffle plate 11.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: pouring the talcum powder to be sorted into the box body 1 slowly from the feeding pipe 4, enabling the talcum powder to fall onto the screening plate 9, starting the motor 16, enabling the motor 16 to drive the cam 18 fixedly arranged on the rotating shaft 7 to rotate, enabling the cam 18 to push the push plate 19 fixedly arranged on the lower surface of the screening plate 9, enabling the push plate 19 to drive the screening plate 9 to move on the supporting rollers 8, enabling the screening plate 9 to move towards the collecting port 2 under the action of the gravity of the screening plate 9 after the cam 18 pushes the screening plate 9 to the highest point of the supporting rollers 8 due to the fact that the supporting rollers 8 are arranged in the oblique line direction, enabling the screening plate 9 to reciprocate in the box body 1, enabling the screening plate 9 to screen the talcum powder on the surface of the screening plate, enabling the screened qualified talcum powder to fall into the collecting box 5 directly for collection, and enabling the talcum powder with larger particles to roll into the collecting box 13 for storage, so as to collect the talcum powder with larger particles, and avoid the talcum powder with larger particles from blocking the meshes on the screening plate 9 and influencing the blanking speed of the talcum powder; the barrier strips 10 are arranged on the upper surface of the screening plate 9, so that the barrier strips 10 can slow down the speed of the talcum powder on the screening plate 9 moving to the collecting box 13, the talcum powder on the screening plate 9 can be sufficiently screened, and qualified talcum powder is prevented from rolling into the collecting box 13; the filtering holes 15 are formed in the outer surface of the collecting box 13, so that the screening plate 9 drives the collecting box 13 to move, and meanwhile, the talcum powder in the collecting box 13 can be screened again, and the talcum powder collected in the collecting box 13 is guaranteed to be an unqualified product with large particles; when collecting box 13 is dismantled to needs, outwards upset sealing door 6, pulls out the rectangular channel 12 that the installation piece 14 that will collect box 13 bottom fixed mounting seted up from screening board 9 in, can accomplish the dismantlement to collecting box 13, is convenient for concentrate the processing to the great talcum powder of granule in the collecting box 13.
Example 2
Referring to fig. 5, but multistage sorting facilities is used in talcum powder production of abundant ejection of compact, the power distribution box comprises a box body 1, the top fixed mounting of box 1 has inlet pipe 4, box 1 has seted up discharge gate 3 near the surface of its bottom, box 1 has collection box 5 near the inner wall slidable mounting of discharge gate 3, collect mouthful 2 has been seted up to the surface of box 1 one side, collect the inner wall of mouthful 2 and rotate and install sealing door 6, rotate between the inner wall of the relative both sides of box 1 and install a plurality of backing rolls 8, a plurality of backing rolls 8 are arranged for the slash direction, a plurality of backing rolls 8's top is equipped with screening board 9, the both sides of screening board 9 and box 1's inner wall slidable mounting, the even fixed mounting of upper surface of screening board 9 has a plurality of blend stops 10, screening board 9 is close to the upper surface of collecting mouthful 2 one side and is equipped with collection mechanism, the inside of box 1 is equipped with pushing mechanism.
In this embodiment, pushing mechanism includes rotating shaft 7 rotatably installed between the inner walls of the two opposite sides of box 1, rotating shaft 7 is close to its middle position and fixedly installed with cam 18, sieving plate 9 is far away from the lower surface of collecting opening 2 and fixedly installed with push plate 19, and cam 18 offsets with the outer surface of push plate 19.
In this embodiment, the outer surface of the box 1 is fixedly provided with the motor 16, and the output end of the motor 16 penetrates through the outer surface of the box 1 and is fixedly installed with one end of the rotating shaft 7.
In this embodiment, collect the mechanism including running through and offering in screening board 9 and being close to the rectangular channel 12 of collecting mouthful 2 one side upper surface, the inner wall of rectangular channel 12 is inserted and is equipped with installation piece 14, and the last fixed surface of installation piece 14 installs and collects box 13, collects box 13 and keeps away from one side of collecting mouthful 2 and set up for the opening, and installation piece 14 makes for magnetic material.
In this embodiment, the outer surface of the collecting box 13 is perforated with a plurality of filtering holes 15.
In this embodiment, the upper surface of the sieving plate 9 far from the collecting port 2 is fixedly provided with a baffle plate 11.
In this embodiment, the magnetic block 17 is fixedly installed on the outer surface of the sealing door 6, and the box body 1 is made of ferromagnetic material.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: pouring the talcum powder to be sorted into the box body 1 slowly from the feeding pipe 4, enabling the talcum powder to fall onto the screening plate 9, starting the motor 16, enabling the motor 16 to drive the cam 18 fixedly arranged on the rotating shaft 7 to rotate, enabling the cam 18 to push the push plate 19 fixedly arranged on the lower surface of the screening plate 9, enabling the push plate 19 to drive the screening plate 9 to move on the supporting rollers 8, enabling the screening plate 9 to move towards the collecting port 2 under the action of the gravity of the screening plate 9 after the cam 18 pushes the screening plate 9 to the highest point of the supporting rollers 8 due to the fact that the supporting rollers 8 are arranged in the oblique line direction, enabling the screening plate 9 to reciprocate in the box body 1, enabling the screening plate 9 to screen the talcum powder on the surface of the screening plate, enabling the screened qualified talcum powder to fall into the collecting box 5 directly for collection, and enabling the talcum powder with larger particles to roll into the collecting box 13 for storage, so as to collect the talcum powder with larger particles, and avoid the talcum powder with larger particles from blocking the meshes on the screening plate 9 and influencing the blanking speed of the talcum powder; the barrier strips 10 are arranged on the upper surface of the screening plate 9, so that the barrier strips 10 can slow down the speed of the talcum powder on the screening plate 9 moving to the collecting box 13, the talcum powder on the screening plate 9 can be sufficiently screened, and qualified talcum powder is prevented from rolling into the collecting box 13; the filtering holes 15 are formed in the outer surface of the collecting box 13, so that the screening plate 9 drives the collecting box 13 to move, and meanwhile, the talcum powder in the collecting box 13 can be screened again, and the talcum powder collected in the collecting box 13 is guaranteed to be an unqualified product with large particles; when the collecting box 13 needs to be disassembled, the sealing door 6 is turned outwards, and the mounting block 14 fixedly mounted at the bottom of the collecting box 13 is pulled out of the rectangular groove 12 formed in the screening plate 9, so that the disassembling of the collecting box 13 can be completed, and the large-particle talcum powder in the collecting box 13 can be conveniently subjected to centralized treatment; set up magnetic path 17 at the surface of sealing door 6 for sealing door 6 can adsorb outside at box 1 through magnetic path 17, avoids sealing door 6 to rotate at will, leads to the talcum powder to waft out box 1.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a but multistage sorting facilities is used in talcum powder production of abundant unloading, includes box (1), its characterized in that, the top fixed mounting of box (1) has inlet pipe (4), box (1) is close to the surface of its bottom and has seted up discharge gate (3), the inner wall slidable mounting that box (1) is close to discharge gate (3) has collection box (5), the surface of box (1) one side has been seted up collects mouthful (2), collect the inner wall rotation of mouthful (2) and install sealing door (6), rotate between the inner wall of box (1) relative both sides and install a plurality of backing roll (8), a plurality of backing roll (8) are the slash direction and arrange, and a plurality of the top of backing roll (8) is equipped with screening board (9), the even fixed mounting in upper surface of screening board (9) has a plurality of blend stops (10), the upper surface of one side of the screening plate (9) close to the collecting opening (2) is provided with a collecting mechanism, and the inside of the box body (1) is provided with a pushing mechanism.
2. The multistage separation equipment for producing the talcum powder capable of fully discharging according to claim 1, wherein the pushing mechanism comprises a rotating shaft (7) rotatably installed between the inner walls of the two opposite sides of the box body (1), a cam (18) is fixedly installed on the rotating shaft (7) close to the middle position of the rotating shaft, a push plate (19) is fixedly installed on the lower surface, far away from the collecting port (2), of the screening plate (9), and the cam (18) abuts against the outer surface of the push plate (19).
3. The multi-stage separation equipment for producing the fully-discharged talcum powder as claimed in claim 2, wherein a motor (16) is fixedly arranged on the outer surface of the box body (1), and the output end of the motor (16) penetrates through the outer surface of the box body (1) and is fixedly arranged with one end of the rotating shaft (7).
4. The multistage separation equipment for producing the talcum powder capable of fully discharging the material according to claim 1, wherein the collecting mechanism comprises a rectangular groove (12) which is formed in a penetrating mode and is formed in the upper surface of one side, close to the collecting opening (2), of the screening plate (9), a mounting block (14) is inserted into the inner wall of the rectangular groove (12), a collecting box (13) is fixedly mounted on the upper surface of the mounting block (14), the side, far away from the collecting opening (2), of the collecting box (13) is arranged in an opening mode, and the mounting block (14) is made of a magnetic material.
5. The multistage separation equipment for producing the talcum powder capable of discharging fully according to claim 4, wherein a plurality of filtering holes (15) are formed in the outer surface of the collecting box (13) in a penetrating mode.
6. A multi-stage separation equipment for producing talcum powder with sufficient discharging capacity according to claim 1, wherein a baffle plate (11) is fixedly arranged on the upper surface of one side of the screening plate (9) far away from the collecting opening (2).
7. The multistage sorting equipment for producing the talcum powder capable of fully discharging according to claim 1, wherein a magnetic block (17) is fixedly arranged on the outer surface of the sealing door (6), and the box body (1) is made of a ferromagnetic material.
CN202220699422.2U 2022-03-29 2022-03-29 Multistage sorting facilities is used in talcum powder production of abundant unloading Active CN217069604U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220699422.2U CN217069604U (en) 2022-03-29 2022-03-29 Multistage sorting facilities is used in talcum powder production of abundant unloading

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220699422.2U CN217069604U (en) 2022-03-29 2022-03-29 Multistage sorting facilities is used in talcum powder production of abundant unloading

Publications (1)

Publication Number Publication Date
CN217069604U true CN217069604U (en) 2022-07-29

Family

ID=82553886

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220699422.2U Active CN217069604U (en) 2022-03-29 2022-03-29 Multistage sorting facilities is used in talcum powder production of abundant unloading

Country Status (1)

Country Link
CN (1) CN217069604U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950951A (en) * 2022-07-13 2022-08-30 江苏金圣棋盘玻璃科技发展有限公司 A plastic inspection device for quartz sand

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950951A (en) * 2022-07-13 2022-08-30 江苏金圣棋盘玻璃科技发展有限公司 A plastic inspection device for quartz sand

Similar Documents

Publication Publication Date Title
CN209271545U (en) A kind of automatic sand sieving device
CN217069604U (en) Multistage sorting facilities is used in talcum powder production of abundant unloading
CN111589511B (en) Efficient crushing and recycling treatment system for construction waste
CN112934354A (en) Civil engineering construction waste treatment device and working method thereof
CN203886787U (en) Particle material screening machine
CN211099483U (en) Prickly ash grinds powder shell and divides sieve device
CN208050380U (en) A kind of silica gel material collecting device
CN215031069U (en) Screening device convenient to use for aluminum oxide ball granulating process
CN103879020A (en) Multi-vibrating-reed rotary tablet press
CN114789138A (en) Grading and screening device for granulated feed
CN209189202U (en) A kind of silicon carbide micro-powder device for vibration screening
CN208824716U (en) A kind of pulverizer particle collection device
CN217491585U (en) Screening plant using building materials
CN215313935U (en) Soybean sieving mechanism is used in soybean oil processing
CN212856643U (en) Dust suppressant processing is with raw materials screening plant
CN213670507U (en) Material screening device for feeding port of building processing equipment
CN218423370U (en) Material screening device convenient to material loading
CN205628547U (en) A sieve that shakes soon for in abrasive material production
CN203779917U (en) Rotary tablet machine
CN218691312U (en) Rice grader that screening efficiency is high
CN113786983B (en) Blockage clearing device and method for ore screening machine
CN212018504U (en) Screening machine for construction waste
CN219309276U (en) Granule sieving mechanism is used in machinery production
CN220160530U (en) Construction waste removes sorting facilities
CN219168886U (en) Screening machine for zero-water sodium metasilicate

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant