CN222659185U - Automatic bran screening equipment for white spirit brewing production - Google Patents

Automatic bran screening equipment for white spirit brewing production Download PDF

Info

Publication number
CN222659185U
CN222659185U CN202420755605.0U CN202420755605U CN222659185U CN 222659185 U CN222659185 U CN 222659185U CN 202420755605 U CN202420755605 U CN 202420755605U CN 222659185 U CN222659185 U CN 222659185U
Authority
CN
China
Prior art keywords
mesh screen
conveying
white spirit
screen body
screen mechanism
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
CN202420755605.0U
Other languages
Chinese (zh)
Inventor
王西
邓勇
梁亭
赵冰
雷苓
陈林
李兵
宋鑫
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.)
Sichuan Langjiu Co ltd
Original Assignee
Sichuan Langjiu 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 Sichuan Langjiu Co ltd filed Critical Sichuan Langjiu Co ltd
Priority to CN202420755605.0U priority Critical patent/CN222659185U/en
Application granted granted Critical
Publication of CN222659185U publication Critical patent/CN222659185U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

本实用新型涉及白酒酿造技术领域,具体公开了一种白酒酿造生产用自动筛糠设备,包括呈倾斜设置且设置有进料口和粗料出口的圆筒网筛机构、与圆筒网筛机构的进料口连通且将稻壳输送至圆筒网筛机构内的输送机构、以及与圆筒网筛机构配合使用的收尘机构;所述粗料出口包括设置在圆筒网筛机构远离输送机构一端的粗料出口、设置在圆筒网筛机构底部的细料杂质出口。本实用新型能够有效的实现粗料、细料及杂质的分离,从而大大提高了白酒的品质;整个筛分过程自动化实现,大大提高了工作效率,降低了生产加工成本。

The utility model relates to the technical field of liquor brewing, and specifically discloses an automatic bran screening device for liquor brewing production, including a cylindrical mesh screen mechanism that is inclined and provided with a feed inlet and a coarse material outlet, a conveying mechanism that is connected to the feed inlet of the cylindrical mesh screen mechanism and conveys rice husks into the cylindrical mesh screen mechanism, and a dust collecting mechanism used in conjunction with the cylindrical mesh screen mechanism; the coarse material outlet includes a coarse material outlet arranged at one end of the cylindrical mesh screen mechanism away from the conveying mechanism, and a fine material impurity outlet arranged at the bottom of the cylindrical mesh screen mechanism. The utility model can effectively separate coarse materials, fine materials and impurities, thereby greatly improving the quality of liquor; the entire screening process is automated, which greatly improves work efficiency and reduces production and processing costs.

Description

Automatic bran screening equipment for white spirit brewing production
Technical Field
The utility model relates to the technical field of white spirit brewing, in particular to automatic bran screening equipment for white spirit brewing production.
Background
Rice hulls are indispensable important auxiliary materials in white spirit brewing, play important roles of loosening fermented grains and the like, along with the social development, rice hull collection and storage difficulties are larger and larger, rice hull fine powder and other impurities can be generated in the rice hull production and processing and transportation processes, the rice hull fine powder is too large and does not meet the brewing process requirements, the fermented grains can be greasy, the quality of white spirit is affected, the existing treatment method is manual screening, the manual operation efficiency is low, the generated dust has larger harm to the environment and human bodies, the proportion of manual screening fine powder is small, and the quality and mass use requirements cannot be met.
Disclosure of utility model
The utility model aims to solve the technical problem of providing automatic bran screening equipment for white spirit brewing production;
the utility model solves the technical problems by adopting the following solution:
The automatic bran screening device for white spirit brewing production comprises a cylindrical mesh screen mechanism, a conveying mechanism and a dust collecting mechanism, wherein the cylindrical mesh screen mechanism is obliquely arranged and provided with a feed inlet and a coarse material outlet, the conveying mechanism is communicated with the feed inlet of the cylindrical mesh screen mechanism and conveys rice hulls into the cylindrical mesh screen mechanism, and the dust collecting mechanism is matched with the cylindrical mesh screen mechanism;
The coarse material outlet comprises a coarse material outlet arranged at one end of the cylindrical mesh screen mechanism far away from the conveying mechanism and a fine material impurity outlet arranged at the bottom of the cylindrical mesh screen mechanism, and the feeding inlet is positioned above the coarse material outlet.
According to the rice husk separator, rice husks are conveyed into a cylindrical mesh screen mechanism through a conveying mechanism, the cylindrical mesh screen mechanism screens the rice husks, coarse materials after screening are collected through a coarse material outlet, and fine materials and dust impurities are collected from a fine material impurity outlet; dust collection is carried out through a dust collection mechanism in the whole screening process, so that the influence of the dust on the environment is reduced; the utility model can effectively realize the separation of coarse materials, fine materials and impurities, thereby greatly improving the quality of white spirit, realizing the whole screening process automatically, greatly improving the working efficiency and reducing the production and processing cost;
In some possible embodiments, in order to effectively realize screening of rice hulls through a cylinder mesh mechanism, coarse materials meeting the requirements of brewing white spirit are obtained;
The cylinder mesh screen mechanism comprises a support frame, a mesh screen body, a transmission frame, a driving mechanism and a shell, wherein the mesh screen body is installed on the support frame and is in rotary fit with the support frame, the transmission frame is sleeved in the mesh screen body and is connected with the mesh screen body, the driving mechanism is connected with the transmission frame and is used for controlling the mesh screen body to rotate around the axial direction of the driving mechanism, the shell is sleeved on the outer side of the mesh screen body, and the mesh screen body is cylindrical.
In some possible embodiments, to avoid that part of the rice hulls remain on the mesh screen body after sieving;
The cylindrical mesh screen mechanism further comprises a first brush roller, wherein the axis of the first brush roller is parallel to the axis of the mesh screen body and is positioned outside the mesh screen body.
In some possible embodiments, in order to enable efficient sieving of rice hulls and enabling satisfactory coarse material to be discharged from the coarse material outlet for collection;
The mesh screen body is obliquely arranged and forms an included angle of 30-45 degrees with the horizontal plane, and the mesh number of the through holes on the mesh screen body is 10-15 meshes.
In some possible embodiments, to avoid the discharge of fines and impurities;
The fine material impurity outlet is arranged at the bottom of the shell, an inlet communicated with the feeding hole is arranged at one side of the shell close to the feeding hole, and an outlet communicated with the coarse material outlet is arranged at one side of the shell close to the coarse material outlet.
In some possible embodiments, in order to effectively reduce the pollution effect of dust on the environment during screening;
The dust collection mechanisms are two groups and are respectively arranged on the inlet and the outlet, and each group of dust collection mechanism comprises a centrifugal fan and a dust collector connected with the centrifugal fan through a pipeline.
In some possible embodiments, to effectively convey the rice hulls and avoid the rice hulls from remaining on the conveying mechanism;
The conveying mechanism is a belt conveying device and comprises a conveying body which is obliquely arranged and the output end of which is positioned above the inlet, a bracket which is used for being installed on the conveying body, and a second brush roller which is arranged on the bracket and positioned below the conveying body, wherein the axial direction of the second brush roller is mutually perpendicular to the conveying direction of the conveying body.
In some possible embodiments, to enable the rice hulls conveyed by the conveying body to fully enter the mesh screen body;
the output end is provided with a chute which is obliquely arranged and penetrates through the inlet to extend into the feed inlet.
In some of the possible embodiments of the present invention,
The included angle formed by the conveying body and the horizontal direction is 45-60 degrees.
In some possible embodiments, to effectively achieve collection of coarse, fine and impurities after sieving;
The device also comprises a coarse material hopper arranged on one side of the coarse material outlet of the cylinder mesh screen mechanism and a collection hopper arranged on one side of the fine material impurity outlet.
Compared with the prior art, the utility model has the beneficial effects that:
According to the utility model, the automatic screening of rice hulls is effectively realized through the matching of the conveying mechanism and the cylindrical mesh screen mechanism, and the screened coarse materials can meet the requirements of brewing white wine, so that the quality of white wine is greatly improved, and the dust collection mechanism is arranged to effectively collect dust generated in the screening process, so that the influence of the dust on the environment is avoided;
the chute is arranged at the output end of the conveying mechanism, so that all rice hulls on the conveying mechanism can enter the cylindrical screening mechanism for screening treatment;
the utility model has simple structure and strong practicability.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a housing, a support frame and a dust collection structure in the utility model;
FIG. 3 is a schematic view of the structural relationship of the mesh screen body and the first brush roller of the present utility model;
The device comprises a 1-cylindrical mesh screen mechanism, a 11-supporting frame, a 12-mesh screen body, a 121-feed inlet, a 122-coarse material outlet, a 123-fine material impurity outlet, a 13-transmission frame, a 14-hairbrush roller I, a 2-conveying mechanism, a 21-conveying body, a 22-supporting frame, a 23-hairbrush roller II, a 3-chute and a 4-dust collecting mechanism.
Detailed Description
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, directly connected, indirectly connected via an intermediate medium, or in communication with each other between two elements or in an interaction relationship between two elements. Reference to "first," "second," and similar terms herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. In the implementation of the present utility model, "and/or" describes the association relationship of the association object, which means that there may be three relationships, for example, a and/or B, and that there may be three cases where a exists alone, while a and B exist together, and B exists alone. In the description of the embodiments of the present utility model, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, a plurality of positioning posts refers to two or more positioning posts. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The present utility model will be described in detail below.
As shown in fig. 1-3;
An automatic bran screening device for white spirit brewing production comprises a cylindrical mesh screen mechanism 1, a conveying mechanism 2 and a dust collecting mechanism 4, wherein the cylindrical mesh screen mechanism 1 is obliquely arranged and provided with a feed inlet 121 and a coarse material outlet 122, the conveying mechanism 2 is communicated with the feed inlet 121 of the cylindrical mesh screen mechanism 1 and conveys rice hulls into the cylindrical mesh screen mechanism 1, and the dust collecting mechanism 4 is matched with the cylindrical mesh screen mechanism 1 for use;
The coarse material outlet 122 comprises a coarse material outlet 122 arranged at one end of the cylindrical mesh screen mechanism 1 far away from the conveying mechanism 2 and a fine material impurity outlet 123 arranged at the bottom of the cylindrical mesh screen mechanism 1;
The feeding hole 121 is located above the coarse material outlet 122, i.e. the vertical height of the feeding hole 121 is greater than the vertical height of the coarse material outlet 122 (coarse material outlet 122, fine material impurity outlet 123);
According to the utility model, rice hulls are conveyed into the cylindrical mesh screen mechanism 1 through the conveying mechanism 2, the cylindrical mesh screen mechanism 1 screens the rice hulls, coarse materials after screening are collected through the coarse material outlet 122, fine materials and dust impurities are collected through the fine material impurity outlet 123, dust is collected through the dust collecting mechanism 4 in the whole screening process, and the influence of the dust on the environment is reduced;
In some possible embodiments, in order to effectively realize screening of rice hulls through the cylindrical mesh screen mechanism 1, coarse materials meeting the requirements of brewing white spirit are obtained;
The cylindrical mesh screen mechanism 1 comprises a support frame 11, a mesh screen body 12, a transmission frame 13, a driving mechanism and a shell, wherein the mesh screen body 12 is installed on the support frame 11 and is in rotary fit with the support frame 11, the transmission frame 13 is sleeved in the mesh screen body 12 and is connected with the mesh screen body 12, the driving mechanism is connected with the transmission frame 13 and is used for controlling the mesh screen body 12 to rotate around the axial direction of the driving mechanism, the shell is sleeved outside the mesh screen body 12, and the mesh screen body 12 is cylindrical.
The supporting frame 11 is used for installing the mesh screen body 12 and is in rotary fit with the mesh screen body 12, the transmission frame 13 is installed in the mesh screen body 12, and the transmission frame 13 is driven by the driving mechanism to rotate, so that the mesh screen body 12 is driven to rotate around the axis through the transmission frame 13;
The rice husks are conveyed into the mesh screen body 12 by the conveying mechanism 2, the driving mechanism controls the rotating shaft to rotate so as to drive the mesh screen body 12 to rotate, the rice husks are screened in the mesh screen body 12, the screened fine materials and impurities are discharged through holes in the mesh screen body 12 and enter a fine material impurity outlet 123 for subsequent collection, and because the mesh screen body 12 is obliquely arranged, coarse materials in the mesh screen body 12 move along the inner side surface of the mesh screen body 12 towards the side close to the coarse material outlet 122 and are discharged from the coarse material outlet 122;
Further, in order to effectively realize the screening of rice hulls and the discharge of coarse fodder meeting the requirements from the coarse fodder outlet 122 for collection, the mesh screen body 12 is obliquely arranged and forms an included angle of 30-45 degrees with the horizontal plane, namely an included angle A in fig. 1 is 30-45 degrees, and the mesh number of the through holes on the mesh screen body 12 is 10-15 meshes;
Through effective control of the mesh number of the through holes, coarse materials, fine materials and impurities can be effectively screened, the mesh number of the further through holes is 15 meshes, namely, the mesh number of the further through holes is 15 meshes, the coarse materials are moved along the axial direction of the mesh screen body 12 and are discharged from the coarse material outlet 122, otherwise, the fine materials and the impurities enter between the shell and the mesh screen body 12 after passing through the through holes and are discharged from the fine material impurity outlet 123;
In some possible embodiments, to avoid that after sieving, a portion of the rice hulls remain on the mesh screen body 12;
The cylindrical mesh screen mechanism 1 further comprises a first brush roller 14, the axis of which is parallel to the axis of the mesh screen body 12 and is positioned outside the mesh screen body 12;
The first brush roller 14 is arranged on the outer side of the mesh screen body 12 and is in contact fit with the mesh screen body 12, and comprises a roller shaft which is arranged in parallel with the rotating shaft and two ends of which are connected with the shell, and brush hair sleeved on the outer side of the roller shaft;
The brush hair is in contact fit with the outer side surface of the mesh screen body 12, when rice hulls are clamped in the through holes, the brush hair presses the rice hulls to prop against the through holes, so that the rice hulls cannot remain on the mesh screen body 12;
The cylinder screen mechanism 1 is the same as the cylinder screen mechanism 1 in the prior art, and the internal structure thereof will not be described in detail here;
in some possible embodiments, to avoid the discharge of fines and impurities;
An inlet communicated with the feed inlet 121 is arranged on one side of the shell close to the feed inlet 121, and an outlet communicated with the coarse material outlet 122 is arranged on one side of the shell close to the coarse material outlet 122;
further, the bottom of the shell is in a cone-shaped structure, and the small end of the shell is provided with a fine material impurity outlet 123, so that all fine materials and impurities can be ensured to be smoothly discharged through the fine material impurity outlet 123;
Further, the inlet is coaxially arranged with the feeding port 121, and the coarse material outlet 122 is coaxially arranged with the outlet;
In some possible embodiments, in order to effectively reduce the pollution effect of dust on the environment during screening;
the dust collection mechanisms 4 are two groups and are respectively arranged on the inlet and the outlet, each group of dust collection mechanism 4 comprises a centrifugal fan and a dust collector connected with the centrifugal fan through a pipeline, wherein the dust collectors in the prior art can be bag type dust collectors and cyclone type dust collectors;
Centrifugal fans are respectively arranged at the inlet and the outlet, dust at the outlet or the inlet is sucked through the centrifugal fans and is conveyed into the dust collector through a pipeline, so that the influence on the surrounding environment caused by direct discharge of dust discharged from the outlet and the inlet is avoided;
In some possible embodiments, in order to effectively convey the rice hulls and avoid the rice hulls from remaining on the conveying mechanism 2;
The conveying mechanism 2 is a belt type conveying device and comprises a conveying body 21 which is obliquely arranged and the output end of which is positioned above the inlet, a bracket 22 which is used for being installed on the conveying body 21, and a second brush roller 23 which is arranged on the bracket 22 and positioned below the conveying body 21, wherein the axial direction of the second brush roller 23 is mutually perpendicular to the conveying direction of the conveying body 21;
The conveying body 21 can be a synchronous belt conveying mechanism 2 or a belt conveying mechanism 2 in the prior art;
The second brush rollers 23 are arranged in parallel and are all positioned at the bottom of the conveying body 21, the conveying belt of the conveying body 21 is in abutting contact, the conveying belt rotates, and the second brush rollers 23 are fixed, so that the cleaning of the conveying belt is realized, and rice hulls remained on the conveying belt are removed;
The output end is provided with a chute 3 which is obliquely arranged and extends into the feed inlet 121 through the inlet;
The rice hulls enter the input end from the material conveying port, are conveyed and conveyed to the output end, are conveyed into the chute 3 through the output end, are conveyed into the mesh screen body 12 through the chute 3, and the chute 3 can prevent part of rice hulls from sliding down and not fully entering the mesh screen body 12 when the rice hulls are conveyed into the mesh screen body 12 from the conveying body 21, can effectively prevent the rice hulls from entering a gap formed between the mesh screen body 12 and the shell, and can effectively guide the rice hulls;
Further, the input end of the conveying body 21 is located below the output end, that is, the height of the position of the output end in the vertical direction is greater than the height of the position of the input section in the vertical direction;
Further, the conveying body 21 forms an angle of 45 ° -60 ° with the horizontal direction, that is, an angle B of 45 ° -60 ° in fig. 1.
In some possible embodiments, to effectively achieve collection of coarse, fine and impurities after sieving;
Further comprises a coarse material hopper arranged on the coarse material outlet 122 side of the cylinder mesh screen mechanism 1 and a collection hopper arranged on the fine material impurity outlet 123 side.
Furthermore, the supporting frame 11 and the supporting frame 22 can be moved, the conveying mechanism 2 and the cylindrical screening mechanism can be separated when not in use, and the two mechanisms can be moved to be connected when screening is needed, so that the device has good maneuverability.
The utility model is not limited to the specific embodiments described above. The utility model extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.

Claims (10)

1. The automatic bran screening device for white spirit brewing production is characterized by comprising a cylindrical mesh screen mechanism, a conveying mechanism and a dust collecting mechanism, wherein the cylindrical mesh screen mechanism is obliquely arranged and provided with a feed inlet and a coarse material outlet, the conveying mechanism is communicated with the feed inlet of the cylindrical mesh screen mechanism and conveys rice hulls into the cylindrical mesh screen mechanism, and the dust collecting mechanism is matched with the cylindrical mesh screen mechanism;
The coarse material outlet comprises a coarse material outlet arranged at one end of the cylindrical mesh screen mechanism far away from the conveying mechanism, and a fine material impurity outlet arranged at the bottom of the cylindrical mesh screen mechanism.
2. The automatic bran screening device for white spirit brewing production according to claim 1, wherein the cylindrical mesh screen mechanism comprises a support frame, a mesh screen body mounted on the support frame and in rotary fit with the support frame, a transmission frame sleeved in the mesh screen body and connected with the mesh screen body, a driving mechanism connected with the transmission frame and used for controlling the mesh screen body to rotate around the axial direction of the driving mechanism, and a shell sleeved outside the mesh screen body, and the mesh screen body is cylindrical.
3. The automatic bran screening apparatus for white spirit brewing production according to claim 2, wherein the cylindrical mesh screen mechanism further comprises a first brush roller having an axis parallel to the axis of the mesh screen body and located outside the mesh screen body.
4. The automatic bran sieving device for white spirit brewing production according to claim 2, wherein the mesh screen body is obliquely arranged and forms an included angle of 30-45 degrees with a horizontal plane, and the mesh number of the through holes on the mesh screen body is 10-15 meshes.
5. The automatic bran screening device for white spirit brewing production according to claim 2, wherein the fine material impurity outlet is arranged at the bottom of the shell, an inlet communicated with the feed inlet is arranged at one side of the shell close to the feed inlet, and an outlet communicated with the coarse material outlet is arranged at one side of the shell close to the coarse material outlet.
6. The automatic bran screening device for white spirit brewing production according to claim 5 is characterized in that the dust collecting mechanisms are two groups and are respectively arranged on the inlet and the outlet, and each group of dust collecting mechanisms comprises a centrifugal fan and a dust collector connected with the centrifugal fan through a pipeline.
7. The automatic bran screening device for white spirit brewing production according to claim 4, wherein the conveying mechanism is a belt type conveying device and comprises a conveying body which is obliquely arranged and the output end of which is positioned above the inlet, a support which is used for being installed on the conveying body, and a second brush roller which is arranged on the support and is positioned below the conveying body, wherein the axial direction of the second brush roller is mutually perpendicular to the conveying direction of the conveying body.
8. The automatic bran screening apparatus for white spirit brewing production of claim 7, wherein the output end is provided with a chute which is obliquely arranged and extends into the feed inlet through the inlet.
9. The automatic bran screening apparatus for brewing and producing white spirit according to claim 7, wherein an included angle formed between the conveying body and the horizontal direction is 45 ° -60 °.
10. The automatic bran screening apparatus for white spirit brewing production according to any one of claims 1 to 9, further comprising a coarse material hopper provided at a coarse material outlet side of the cylinder screen mechanism, and a collection hopper provided at a fine material impurity outlet side.
CN202420755605.0U 2024-04-12 2024-04-12 Automatic bran screening equipment for white spirit brewing production Active CN222659185U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202420755605.0U CN222659185U (en) 2024-04-12 2024-04-12 Automatic bran screening equipment for white spirit brewing production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202420755605.0U CN222659185U (en) 2024-04-12 2024-04-12 Automatic bran screening equipment for white spirit brewing production

Publications (1)

Publication Number Publication Date
CN222659185U true CN222659185U (en) 2025-03-25

Family

ID=95045687

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202420755605.0U Active CN222659185U (en) 2024-04-12 2024-04-12 Automatic bran screening equipment for white spirit brewing production

Country Status (1)

Country Link
CN (1) CN222659185U (en)

Similar Documents

Publication Publication Date Title
CN111921583B (en) a flour production system
CN222659185U (en) Automatic bran screening equipment for white spirit brewing production
CN114433320A (en) Raw material grinds immediately and uses screw feeder with broken and safeguard function
CN220496890U (en) Vibrating screen for rice processing
CN210613810U (en) Bran suction device for rice mill
CN109569853B (en) Combined grinding system composed of ball mill and roller press
CN219943681U (en) Built-in cylinder primary cleaner
CN115430607B (en) Impurity removing device for rice processing
CN215029198U (en) A self-priming rice bran crushing machine
CN2492303Y (en) Minuature combined rice hulling and sieving mill
CN117019274A (en) Automatic multistage grinding equipment of high efficiency of kernel of corn
CN202984048U (en) Binocular precleaner
CN222830131U (en) A wind selection device for production and processing of Chinese herbal medicine slices
CN221157529U (en) Coarse cereal oatmeal screening machine
CN221361222U (en) Powder concentrator with adjustable particle size
CN222358750U (en) A rolling screening device for rice finishing
CN211914545U (en) A screening equipment for rice partial shipment
CN221108911U (en) Dust removing device for paddy processing
CN221230658U (en) Rice mill with two rice milling rollers
CN223233899U (en) Stirring device of pulverizer
CN221733651U (en) Tea branch recycling, crushing and mixing all-in-one machine
CN223733233U (en) Duplex cleaner
CN222829701U (en) A stainless steel high-efficiency rice mill
CN221387496U (en) Rice chip removing device based on rice processing usefulness
CN217911573U (en) Rice processing filter equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant