CN213707701U - Perfusion system - Google Patents

Perfusion system Download PDF

Info

Publication number
CN213707701U
CN213707701U CN202022721910.2U CN202022721910U CN213707701U CN 213707701 U CN213707701 U CN 213707701U CN 202022721910 U CN202022721910 U CN 202022721910U CN 213707701 U CN213707701 U CN 213707701U
Authority
CN
China
Prior art keywords
valve
filling
inlet
pipeline
material barrel
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
CN202022721910.2U
Other languages
Chinese (zh)
Inventor
李云峰
张亮
巴根纳
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.)
Inner Mongolia Yili Industrial Group Co Ltd
Original Assignee
Inner Mongolia Yili Industrial Group 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 Inner Mongolia Yili Industrial Group Co Ltd filed Critical Inner Mongolia Yili Industrial Group Co Ltd
Priority to CN202022721910.2U priority Critical patent/CN213707701U/en
Application granted granted Critical
Publication of CN213707701U publication Critical patent/CN213707701U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model relates to a filling system, including feedway and filling valve, the filling valve includes that vertical setting just has the valve body of valve pocket, and the bottom of valve body is equipped with the valve port, is equipped with in the valve pocket and can slide from top to bottom and can support the case that leans on the valve port, is equipped with the feed inlet with the valve pocket intercommunication at the upper portion lateral wall of valve body, and the lower extreme of valve port constitutes the discharge gate. The feeding device comprises a first material barrel for containing pure liquid materials and a second material barrel for containing particle materials, a particle inlet communicated with the valve cavity is formed in the side wall of the bottom of the valve body, the first material barrel is connected with the feeding hole through a first pumping device, and the second material barrel is connected with the particle inlet through a second pumping device. The utility model discloses a filling system separately fills pure liquid material and granule material, can effectively guarantee the homogeneity of granule content in the filling granule product.

Description

Perfusion system
Technical Field
The utility model belongs to the technical field of the filling equipment, especially, relate to a filling system.
Background
At present, the filling system is widely applied to the industries of food, beverage and the like, for example, the filling system of a lile TT3 filling machine. For beverages (such as yellow peach yogurt) made of pure liquid materials (also called as base materials, such as yogurt, fruit juice, etc.) and granular materials (such as jam containing granules, yellow peach, oat, etc.), the method generally comprises the steps of mixing the pure liquid materials and the granular materials in a mixing tank with a large volume according to a ratio, conveying the mixed feed liquid into a feeding device through a pipeline, conveying the mixed feed liquid into a filling valve through the feeding device through the pipeline, and filling the mixed feed liquid into a product package through the filling valve.
However, the viscosity of the pure liquid material is low, the viscosity of the granular materials such as jam is high, the viscosity of the pure liquid material is about one tenth of the viscosity of the granular materials, and the adding proportion of the granular materials in a finished product is small, generally below 15%, so that the viscosity of the material liquid obtained after the pure liquid material and the granular materials are mixed is low. Meanwhile, as the pipeline connected between the mixing tank and the feeding device is generally between 20 and 30m and has longer length, the phenomena of sedimentation and uneven particle distribution of the particle materials in a mixing system are easy to occur in the process of conveying the mixed feed liquid in the pipeline; when the mixed feed liquid is conveyed to the filling valve through a pipeline by the feeding device, the particle sedimentation phenomenon also exists in the pipeline, so that the difference between every two product packages is larger when the mixed feed liquid is finally filled into the product packages, the particle content in each product package is very uneven, and the consumer experience is influenced.
Therefore, the inventor provides a perfusion system by virtue of experience and practice of related industries for many years, so as to overcome the defects of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a filling system separately fills pure liquid material and granule material, can effectively guarantee the homogeneity of granule content in the filling granule product.
The utility model aims at realizing like this, a filling system, including feedway and filling valve, the filling valve includes vertical setting and has the valve body of valve pocket, the bottom of valve body is equipped with the valve port, it can support the case that leans on in the valve pocket to slide from top to bottom and lean on in the valve pocket, upper portion lateral wall at the valve body is equipped with the feed inlet with the valve pocket intercommunication, the lower extreme of valve port constitutes the discharge gate, feedway is including the first material bucket that is used for splendid attire pure liquid material and the second material bucket that is used for splendid attire granule material, bottom lateral wall at the valve body is equipped with the granule import with the valve pocket intercommunication, first material bucket is connected with the feed inlet through first pumping installations, the second material bucket passes through second pumping installations and granule access.
The utility model discloses an among the preferred embodiment, the filling system still includes one end open-ended product package, and the product package is established under the filling valve and the open end of product package is just to the discharge gate setting.
In a preferred embodiment of the present invention, the particle inlet is formed by an inclined circular tube disposed on the side wall of the valve body, the axis of the inclined circular tube intersects with the central point of the discharge port, and the projection of the circular channel formed by the wall of the inclined circular tube along the axis direction passes through the discharge port and projects on the inner side wall of the product bag.
In a preferred embodiment of the present invention, the vertical distance between the top of the projection on the product bag and the open end of the product bag is greater than or equal to 5 mm.
In a preferred embodiment of the present invention, the included angle between the axis direction of the inclined circular tube and the horizontal direction is 45 to 60 °.
In a preferred embodiment of the present invention, the first pumping device and the second pumping device are plunger pumps.
In a preferred embodiment of the present invention, the side portion and the bottom portion of the first material barrel are respectively provided with a first inlet and a first outlet, the first outlet is connected to the inlet end of the first pumping device through a first pipeline, and the outlet end of the first pumping device is connected to the feed inlet through a second pipeline; the side part and the bottom of the second material barrel are respectively provided with a second inlet and a second outlet, the second outlet is connected with the inlet end of the second pumping device through a third pipeline, and the outlet end of the second pumping device is connected with the particle inlet through a fourth pipeline.
In a preferred embodiment of the present invention, a check valve is disposed on each of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline.
In a preferred embodiment of the present invention, a first stirrer is disposed in the first material barrel, and a second stirrer is disposed in the second material barrel.
In a preferred embodiment of the present invention, the first stirrer and the second stirrer are frame stirrers or paddle stirrers.
From above, the utility model provides a filling system adds the granule import on the filling valve and is connected with the second storage bucket of special splendid attire granule material, can separately fill granule material and pure liquid material when the filling, nevertheless can successively fill in same product package. Meanwhile, as the addition amount of the pure liquid material is larger than that of the granular material, the granular material is filled firstly during filling, and then the pure liquid material is filled, even if partial granular material remains in the valve body, the pure liquid material can be brought into a product bag in the filling process. Compared with the mode of mixing the two materials and then filling the mixture in the prior art, the method effectively avoids the conditions of sedimentation of the particle materials in the pipeline and uneven particle distribution, ensures more uniform particle content in each product package, and improves the experience of consumers.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: to the utility model provides a filling system's structural schematic.
FIG. 2: do the utility model provides a structural schematic of filling valve.
FIG. 3: is a partial enlarged view at M in fig. 2.
FIG. 4: for the utility model provides a filling valve and local enlargements of product package complex.
FIG. 5: which is a partial enlargement at N in fig. 4.
The reference numbers illustrate:
1. a feeding device; 11. a first material barrel; 111. a first inlet; 112. a first outlet; 113. a first stirrer; 12. a second material barrel; 121. a second inlet; 122. a second outlet; 123. a second agitator;
2. a filling valve; 21. a valve body; 22. a valve cavity; 23. a valve core; 24. a feed inlet; 25. a discharge port; 26. A particle inlet; 27. inclining the circular tube; 271. an extension line; 28. mounting holes; 29. a drive member;
3. a first pumping device; 31. a first conduit; 32. a second conduit;
4. a second pumping device; 41. a third pipeline; 42. a fourth conduit;
5. a one-way valve;
6. a product bag;
7. and (3) granules.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1 to 5, the present embodiment provides a filling system, which includes a feeding device 1 and a filling valve 2, the filling valve 2 includes a valve body 21 vertically disposed and having a valve cavity 22, a valve port is disposed at a bottom end of the valve body 21, a valve core 23 capable of sliding up and down and abutting on an upper end of the valve port is disposed in the valve cavity 22, a feeding port 24 communicated with the valve cavity 22 is disposed on a sidewall of an upper portion of the valve body 21, and a discharging port 25 is formed at a lower end of the valve port. The feeding device 1 comprises a first material barrel 11 used for containing pure liquid materials and a second material barrel 12 used for containing particle materials, a particle inlet 26 communicated with the valve cavity 22 is formed in the side wall of the bottom of the valve body 21, the first material barrel 11 is connected with the feeding hole 24 through a first pumping device 3, and the second material barrel 12 is connected with the particle inlet 26 through a second pumping device 4.
As shown in fig. 2, the valve body 21 is a long tubular structure, and the valve core 23 is a rod-shaped structure; a diaphragm (not shown in fig. 2) for sealing is further sleeved on the upper part of the valve core 23 and in the valve cavity 22, and the feed port 24 is positioned below the diaphragm; the upper end of the valve core 23 extends out of the valve cavity 22 and is connected with a driving part 29, and the driving part 29 can be a servo motor to drive the valve core 23 to slide up and down in the valve cavity 22; when the valve core 23 moves upwards to be separated from the upper end of the valve port, the filling valve 2 is opened, and the feed port 24 and the particle inlet 26 are communicated with the discharge port 25; after the valve core 23 moves downwards and abuts against the upper end of the valve port, the filling valve 2 is closed, and the feed port 24 and the particle inlet 26 are not communicated with the discharge port 25. The internal structure of the filling valve 2 and the process of opening and closing the filling valve are the prior art (for example, the filling valve in the filling system of the lile TT3 filling machine), and in this embodiment, the improvement is mainly made on the existing filling valve, and the particle inlet 26 is additionally provided to facilitate the separate filling of the particle material and the pure liquid material.
The pure liquid materials refer to materials without particles, such as yoghourt, fruit juice and the like, and can have different viscosities; by particulate material is meant particulate material added to the finished product in a small proportion (typically below 15%), for example, fruit jam, yellow peach, oats, etc. containing the particles. During production, the filling system further comprises a product bag 6 with an opening at one end, the product bag 6 is arranged right below the filling valve 2, and the opening end of the product bag 6 is opposite to the discharge hole 25. The product bag 6 is of a cylindrical structure with an opening at one end, can be a bottle body or a cup body, and is convenient for containing feed liquid products. When filling is carried out, the filling valve 2 is opened firstly, a certain amount of granular materials are pumped into the valve body 21 through the second pumping device 4, and the granular materials enter the valve cavity 22 and then flow into the product bag 6 through the discharge hole 25; then a certain amount of pure liquid material is pumped into the valve body 21 by the first pumping device 3 and flows into the product bag 6, and the filling valve 2 is closed after filling.
Therefore, in the filling system of the present embodiment, the filling valve 2 is additionally provided with the particle inlet 26 and is connected to the second material barrel 12 specially used for containing the particle material, so that the particle material and the pure liquid material can be separately filled during filling, but the particle material and the pure liquid material can be sequentially filled into the same product bag 6. Meanwhile, as the addition amount of the pure liquid material is larger than that of the granular material, the granular material is filled firstly during filling, and then the pure liquid material is filled, even if partial granular material is remained in the valve body 21, the pure liquid material can be brought into the product bag 6 in the filling process. Compared with the mode of mixing the two materials and then filling the mixture in the prior art, the method effectively avoids the conditions of sedimentation of the particle materials in the pipeline and uneven particle distribution, ensures more uniform particle content in each product package 6, and improves the experience of consumers.
In a specific implementation manner, in order to ensure that the particulate material can smoothly flow into the product bag 6 after passing through the particulate inlet 26 at a certain flow rate, as shown in fig. 2 and 4, the particulate inlet 26 is formed by an inclined circular tube 27 disposed on the side wall of the valve body 21, the axis of the inclined circular tube 27 intersects with the central point of the discharge hole 25, and the projection of a circular channel formed by the wall of the inclined circular tube 27 along the axis direction passes through the discharge hole 25 and is projected on the inner side wall of the product bag 6. That is, an extension 271 of the circular channel in the direction of its axis passes through the outlet 25 and intersects the inner side wall of the pack 6. It will be appreciated that the inclined circular tube 27 is inclined upward from the valve chamber 22 to the outer side wall of the valve body 21, and the extension 271 is still a circular passage.
Preferably, in order to avoid the granular material from rushing out of the pack 6 when the flow rate of the granular material is too high, the vertical distance d between the vertex of the projection on the pack 6 and the open end of the pack 6 is greater than or equal to 5mm, as shown in fig. 4 and 5. That is, the vertical distance d between the highest position of the intersection point formed by the extension line 271 and the inner side wall of the product pack 6 and the top opening end of the product pack 6 is greater than or equal to 5 mm. Generally, the larger the vertical distance d, the better, as the dimensions of the valve body 21 and the product package 6 permit, to effectively ensure that the particulate material flows completely into the product package 6.
The included angle theta between the axial direction of the inclined circular tube 27 and the horizontal direction is preferably 45-60 degrees. More preferably, the overall filling valve 2 is relatively small in volume in actual use, and the lifting height of the valve core 23 when the filling valve 2 is in the open position is limited. Therefore, in order to prevent the particle material from being blocked by the valve core 23 after the valve core 23 is lifted and to ensure a larger discharge space for the particle material, as shown in fig. 5, the extension line 271 is preferably tangent to the bottom side of the valve core 23 when the filling valve 2 is in the open position. That is, the extension line 271 is preferably tangent to the raised bottom side of the valve element 23.
For example, as shown in fig. 5, in the present embodiment, the discharge hole 25 is a circular hole with a diameter of 26mm, and the lifting height of the valve core 23 when the filling valve 2 is in the open position is 21 mm. Two boundary points of the discharge port 25 on the longitudinal section of the filling valve 2 in the open position are respectively marked as a point A and a point B, a tangent line between the point A and the side edge of the bottom of the valve core 23 is made, the tangent point is marked as a point C, then the point C is extended to be intersected with the side wall of the valve body 21, and the intersection point is marked as a point D, wherein the point D is a boundary point of the installation hole 28 formed in the side wall of the valve body 21. Then, a parallel line parallel to the point AD is formed at the point B, and an intersection point of the parallel line and the side wall of the valve body 21 is denoted as a point E, which is another boundary point of the mounting hole 28 formed in the side wall of the valve body 21. AD. The extension line of the BE is overlapped with the boundary line of the inclined circular tube 27 on the longitudinal section, the axis of the inclined circular tube 27 is parallel to the AD, the inclined circular tube 27 is welded at the position of the mounting hole 28 in this direction, the inside of the inclined circular tube 27 constitutes the above-mentioned particle inlet 26, and the diameter of the inclined circular tube 27 is 25mm in this embodiment.
In this way, the granular material can flow according to the movement trajectory shown in fig. 5, which is formed by the granules 7 shown in fig. 5 (i.e. the small circles shown in fig. 5) under the effect of gravity, so that the predominant part of the granular material can flow into the product package 6 according to this movement trajectory. And by designing the particle inlet 26 in this way, the valve core 23 does not obstruct the discharge of the particles, and the feeding space can be made larger and more reasonable.
In practical application, in order to more conveniently control the addition amounts of the granular materials and the pure liquid materials, the first pumping device 3 and the second pumping device 4 are preferably plunger pumps so as to improve the addition precision of the granules in the finished products and ensure the uniformity of the content of the granules among each package of the finished products.
Further, as shown in fig. 1, the first material barrel 11 has a first inlet 111 and a first outlet 112 at the side and the bottom, respectively, the first outlet 112 is connected with the inlet end of the first pumping device 3 through a first pipe 31, and the outlet end of the first pumping device 3 is connected with the feed port 24 through a second pipe 32. The second barrel 12 has a second inlet 121 and a second outlet 122 at the side and bottom, respectively, the second outlet 122 is connected to the inlet end of the second pumping device 4 through a third conduit 41, and the outlet end of the second pumping device 4 is connected to the particle inlet 26 through a fourth conduit 42.
The first inlet 111 and the second inlet 121 can be used for conveniently adding materials into the first material barrel 11 and the second material barrel 12, wherein the first pipeline 31, the second pipeline 32, the third pipeline 41 and the fourth pipeline 42 are all preferably made of stainless steel hard pipes, and the part of the fourth pipeline 42 close to the particle inlet 26 is arranged coaxially with the particle inlet 26. More preferably, to avoid material backflow, a check valve 5 is provided on each of the first, second, third and fourth pipes 31, 32, 41 and 42.
Further, as shown in fig. 1, a first stirrer 113 is arranged in the first material barrel 11 to prevent pure liquid materials such as yogurt from precipitating after a period of time, and to ensure uniformity of the materials. A second stirrer 123 is arranged in the second material barrel 12 to ensure that particles in the particle materials such as jam are better and uniformly dispersed, and precipitation is avoided. The first stirrer 113 and the second stirrer 123 are preferably a gate stirrer or a paddle stirrer.
Further, taking the first pumping device 3 and the second pumping device 4 shown in fig. 1 as plunger pumps, which are respectively referred to as a first plunger pump and a second plunger pump, as an example, the granular material is jam containing granules, and the pure liquid material is yogurt, the operation principle of the filling system is as follows:
yogurt is introduced into the first vat 11 through the first inlet 111 and the jam containing particles is introduced into the second vat 12 through the second inlet 121.
When filling the product, the valve element 23 is lifted by the servomotor, so that the filling valve 2 is opened. Filling jam: by moving the plunger of the second plunger pump to the right, the jam enters the cavity of the second plunger pump through the one-way valve 5 on the third conduit 41, the second plunger pump stops at a given jam addition, then the plunger of the second plunger pump moves to the left, and the vast majority of the jam flows into the product package 6 after entering the valve cavity 22 along the particle inlet 26 through the one-way valve 5 on the fourth conduit 42. Then, yogurt pouring is carried out: the yoghurt is poured into the valve chamber 22 by means of a first plunger pump and then into the product bag 6, the yoghurt pouring principle being the same as the jam pouring principle and not being described in detail here. After the jam and the yoghourt are completely filled, the servo motor drives the valve core 23 to move downwards, and the filling valve 2 is closed.
Because the adding amount ratio of the conventional jam to the yoghourt is about 1: 9 so that the majority of the jam flows into the product package 6 after entering the valve chamber 22 along the particle inlet 26, and if the remainder of the jam in the valve chamber 22 is carried into the product package 6 by a 90% yoghurt filling process.
To sum up, the filling system in this embodiment fills the particle material earlier and fills the pure liquid material again through separately filling pure liquid material and particle material, and the granule import 26 is located the below of feed inlet 24, has effectively guaranteed the interpolation precision of granule and the homogeneity of particle content between every product package 6 in the product package 6. The method is particularly suitable for mixing the base material with lower viscosity with another granular material, and the phenomenon of granular material precipitation occurs after mixing, so that the problem of uneven particle content of the filled granular product caused by the granular material precipitation can be well solved.
The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims (10)

1. A filling system comprises a feeding device and a filling valve, wherein the filling valve comprises a valve body which is vertically arranged and is provided with a valve cavity, the bottom end of the valve body is provided with a valve port, a valve core which can slide up and down and can abut against the upper end of the valve port is arranged in the valve cavity, the side wall of the upper part of the valve body is provided with a feeding hole communicated with the valve cavity, the lower end of the valve port forms a discharge hole,
the feeding device comprises a first material barrel for containing pure liquid materials and a second material barrel for containing particle materials, wherein a particle inlet communicated with the valve cavity is formed in the side wall of the bottom of the valve body, the first material barrel is connected with the feed inlet through a first pumping device, and the second material barrel is connected with the particle inlet through a second pumping device.
2. The perfusion system of claim 1,
the filling system further comprises a product bag with an opening at one end, the product bag is arranged under the filling valve, and the opening end of the product bag is opposite to the discharge hole.
3. The perfusion system of claim 2,
the granule import is established by establishing the slope pipe of valve body lateral wall forms, the axis of slope pipe with the central point of discharge gate is crossing, the projection of the circular passageway that the pipe wall of slope pipe formed along its axis direction passes the discharge gate and throws on the inside wall of product package.
4. The perfusion system of claim 3,
the vertical distance between the top point of the projection on the product package and the open end of the product package is greater than or equal to 5 mm.
5. The perfusion system of claim 3,
the included angle between the axis direction of the inclined round pipe and the horizontal direction is 45-60 degrees.
6. The perfusion system of claim 1,
the first pumping device and the second pumping device are both plunger pumps.
7. The perfusion system of claim 1,
the side part and the bottom of the first material barrel are respectively provided with a first inlet and a first outlet, the first outlet is connected with the inlet end of the first pumping device through a first pipeline, and the outlet end of the first pumping device is connected with the feeding hole through a second pipeline;
the side part and the bottom of the second material barrel are respectively provided with a second inlet and a second outlet, the second outlet is connected with the inlet end of the second pumping device through a third pipeline, and the outlet end of the second pumping device is connected with the particle inlet through a fourth pipeline.
8. The perfusion system of claim 7,
and the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are respectively provided with a one-way valve.
9. The perfusion system of claim 1,
a first stirrer is arranged in the first material barrel, and a second stirrer is arranged in the second material barrel.
10. The perfusion system of claim 9,
the first stirrer and the second stirrer are frame stirrers or paddle stirrers.
CN202022721910.2U 2020-11-20 2020-11-20 Perfusion system Active CN213707701U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022721910.2U CN213707701U (en) 2020-11-20 2020-11-20 Perfusion system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022721910.2U CN213707701U (en) 2020-11-20 2020-11-20 Perfusion system

Publications (1)

Publication Number Publication Date
CN213707701U true CN213707701U (en) 2021-07-16

Family

ID=76785208

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022721910.2U Active CN213707701U (en) 2020-11-20 2020-11-20 Perfusion system

Country Status (1)

Country Link
CN (1) CN213707701U (en)

Similar Documents

Publication Publication Date Title
CN205095790U (en) Liquid material reation kettle with supply discharge system
CN213707701U (en) Perfusion system
CN202538669U (en) Continuous operational type solid material homogenizer
CN205517406U (en) Agitating unit of organosilicon release agent
CN207230166U (en) The pulp conveying device on preparation equipment
CN211198557U (en) Filling device
CN106976577A (en) A kind of novel dairy product filling apparatus
CN208260682U (en) A kind of agitating device of efficient mechanical stirring in conjunction with air agitation
CN103031241A (en) Automatic online pipeline blending method and system as well as application thereof
CN203159167U (en) Proportioning mixer suitable for producing milk beverage
CN206407906U (en) One kind is used for the filling accurate quantitative analysis device of pumpkin seed oil
CN107161367A (en) A kind of novel dairy product filling apparatus
CN209901107U (en) Dosing unit is used in glass bottle production
CN208360533U (en) A kind of bottle placer of liquid packing dusting-proof
CN207773536U (en) A kind of New weighing hopper
CN209213076U (en) A kind of liquid mixing valve
CN103301774A (en) Automatic material mixing device
CN208591750U (en) Construction tank
CN208145892U (en) Liquid foodstuff uniformly mixes device
CN206910873U (en) Suitable for different specific weight and the liquid separating appts of layering
CN105692530B (en) A kind of filling high bit divider
CN206823572U (en) A kind of homogenizer for material mixing
CN215611393U (en) Liquid preparation filling mechanism
CN220962232U (en) Liquid quantitative control device
CN205965715U (en) Energy -saving drug steeping machine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant