CN214988157U - Loading attachment is used in renewable resources's environmental protection mortar production - Google Patents

Loading attachment is used in renewable resources's environmental protection mortar production Download PDF

Info

Publication number
CN214988157U
CN214988157U CN202120046170.9U CN202120046170U CN214988157U CN 214988157 U CN214988157 U CN 214988157U CN 202120046170 U CN202120046170 U CN 202120046170U CN 214988157 U CN214988157 U CN 214988157U
Authority
CN
China
Prior art keywords
charging barrel
feeding
upper charging
barrel
fixedly connected
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
CN202120046170.9U
Other languages
Chinese (zh)
Inventor
葛桂全
吴学海
葛来鹏
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.)
Jiangsu Lihao Building Materials Technology Co ltd
Original Assignee
Jiangsu Lihao Building Materials Technology 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 Jiangsu Lihao Building Materials Technology Co ltd filed Critical Jiangsu Lihao Building Materials Technology Co ltd
Priority to CN202120046170.9U priority Critical patent/CN214988157U/en
Application granted granted Critical
Publication of CN214988157U publication Critical patent/CN214988157U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

The utility model discloses a feeding device for producing environment-friendly mortar of renewable resources, which belongs to the technical field of environment-friendly mortar production equipment, and the technical scheme is characterized in that the feeding device comprises a processing production cavity, a screening box is arranged on the left side of the processing production cavity, a control box is arranged below the left side of the processing production cavity, a first feeding barrel is arranged on the left side of the screening box, a second feeding barrel is arranged on the right side of the screening box, a third feeding barrel is arranged above the right side of the second feeding barrel, the screening box is convenient for screening materials, so that the sizes of the materials are consistent, the production quality of the environment-friendly mortar is ensured, the lower end of the screening box is communicated with the second feeding barrel, the screened raw materials are conveniently conveyed into the third feeding barrel by the second feeding barrel, a third screw shaft inside the third feeding barrel rotates, the materials are convenient to be conveyed into the processing production cavity for processing production, and the feeding device for producing environment-friendly mortar achieves the effect of facilitating feeding processing, the feeding efficiency is high, the labor is saved, and the production quality is improved.

Description

Loading attachment is used in renewable resources's environmental protection mortar production
Technical Field
The utility model relates to an environmental protection mortar production facility technical field, in particular to renewable resources's loading attachment is used in environmental protection mortar production.
Background
Mortar is a bonding substance used for building bricks on buildings, and is formed by adding water into sand and cementing materials (cement, lime paste, clay and the like) according to a certain proportion, also called mortar and also used as mortar, wherein the mortar is commonly used as cement mortar, mixed mortar (or cement lime mortar), lime mortar and clay mortar, and the mortar is mixed by a general mortar mixer and is required to be uniformly mixed.
The feeding device for producing the existing environment-friendly mortar is simple in structure, the feeding effect cannot be achieved, the feeding efficiency is low, and the efficiency and the quality of the environment-friendly mortar production are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a new solution is proposed to above problem.
The utility model discloses a realized like this, a loading attachment is used in environmental protection mortar production of renewable resources, including processing production chamber, the left side of processing production chamber is provided with the screening case, the left below of processing production chamber is provided with the control box, the left side of screening case is provided with first upper charging barrel, the right side of screening case is provided with second upper charging barrel, the top on the right side of second upper charging barrel is provided with the third upper charging barrel;
the lower part of the left side of the first upper charging barrel is communicated with a feeding hopper, the middle part of the inner side wall of the first upper charging barrel is movably connected with a first spiral shaft, the upper part of the right side of the first upper charging barrel is communicated with a connecting pipe, the other end of the connecting pipe is communicated with the screening box, a feeding pipe is communicated with the lower part of the right side of the screening box, the other end of the feeding pipe is communicated with the left side of the lower part of the second upper charging barrel, the middle part of the inner side wall of the second upper charging barrel is movably connected with a second spiral shaft, the upper part of the right side of the second upper charging barrel is communicated with a material conveying pipe, the other end of the material conveying pipe is communicated with the left side of the upper end surface of a third upper charging barrel, the middle part of the inner side wall of the third upper charging barrel is movably connected with a third spiral shaft, the up end intercommunication in processing production chamber has the inlet pipe, the right side intercommunication of terminal surface under the other end of inlet pipe and the feed cylinder is gone up to the third, flange fixedly connected with metering valve is passed through at the middle part of inlet pipe.
In order to facilitate the material to be conveyed into the screening box for screening and enable the processing quality of the environment-friendly mortar to pass, the feeding device for producing the environment-friendly mortar is preferred, the upper end face of the first feeding cylinder is fixedly connected with a first motor, the upper end face of the first screw shaft penetrates through the first feeding cylinder and extends to the outside of the first feeding cylinder to be fixedly connected with the output end of the first motor, the first feeding cylinder is arranged in an inclined mode, and the included angle between the first feeding cylinder and the horizontal plane is 40-50 degrees.
In the feed cylinder is gone up to the third in for the convenience will sieve the good material, as the utility model discloses a loading attachment is preferred for the environmental protection mortar production of renewable resources, the left top fixedly connected with second motor of feed cylinder is gone up to the second, the output fixedly connected with driving shaft of second motor, the up end of second screw axis runs through the second and goes up the feed cylinder and extend to the outside of feed cylinder on the second, the equal fixedly connected with band pulley of lateral wall of second screw axis and driving shaft, two the lateral wall swing joint of band pulley has the conveyer belt, the feed cylinder slope sets up on the second, and the second is gone up the feed cylinder and the contained angle of horizontal plane and is between 70-80.
In order to carry the material to process the production intracavity and process the production in order to make things convenient for the utility model discloses an environmental protection mortar production of renewable resources is with loading attachment preferred, the right side fixedly connected with third motor of feed cylinder is gone up to the third, the right-hand member of third screw axis runs through the third and goes up the feed cylinder and extend to the third and go up the outside of feed cylinder and the output fixed connection of third motor.
In the feed cylinder was gone up to the second in for the convenient raw materials that will sieve, the efficiency of material loading is improved, as the utility model discloses a renewable resources's environmental protection is loading attachment is preferred for the mortar production, the right side of feed cylinder is provided with the frame with second motor assorted on the second, the bottom height in the left and right sides of screening case is low.
For the material of convenient stirring mixed processing production intracavity, guarantee that the material reaches the effect of homogeneous mixing, as the utility model discloses a renewable resources's environmental protection loading attachment is preferred for the mortar production, the middle part fixedly connected with agitator motor of processing production chamber up end, agitator motor's right side is provided with the water pipe, water pipe and processing production chamber intercommunication.
In order to make the ratio of raw materials and water conveniently control, improve the production quality of environmental protection mortar, conduct the utility model discloses a renewable resources's environmental protection is loading attachment is preferred for the mortar production, the middle part of water pipe loops through flange fixedly connected with flow valve and control valve extremely down from last.
Compared with the prior art, the beneficial effects of the utility model are that:
1. according to the feeding device for producing the environment-friendly mortar with the renewable resources, the first spiral shaft in the first feeding cylinder spirally rotates upwards, so that materials can be conveniently conveyed into the screening box to be screened, the sizes of the processed materials are consistent, the production quality of the environment-friendly mortar is ensured, the lower end of the screening box is communicated with the second feeding cylinder, the screened raw materials can be conveniently conveyed into the third feeding cylinder by the second feeding cylinder, the third spiral shaft in the third feeding cylinder rotates, the materials can be conveniently conveyed into the processing production cavity to be processed and produced, the feeding device for producing the environment-friendly mortar achieves the effect of facilitating feeding and processing, the feeding efficiency is high, the manpower is saved, and the production quality is improved;
2. this kind of loading attachment is used in renewable resources's environmental protection mortar production, pass through flange fixedly connected with metering valve at the middle part of inlet pipe, the metering valve conveniently measures the volume of transported substance material, from last to looping through flange fixedly connected with flow valve and control valve down at the middle part of water pipe, open the control valve, and then conveniently add water to the processing production intracavity, the flow valve of setting is convenient for measure the volume of adding water, make the ratio convenient control of raw materials and water, further improve the production quality of environmental protection mortar.
Drawings
FIG. 1 is an overall structure diagram of a feeding device for producing environment-friendly mortar of renewable resources according to the present invention;
fig. 2 is a cross-sectional view of a second charging barrel of the present invention;
fig. 3 is a structural view of a second screw axis according to the present invention.
In the figure, 1, a production cavity is processed; 101. a stirring motor; 102. a water pipe; 103. a feed pipe; 104. a metering valve; 105. a flow valve; 106. a control valve; 2. a control box; 3. screening the box; 301. a feed pipe; 4. a first charging barrel; 401. a feed hopper; 402. a first motor; 403. a first screw shaft; 404. a connecting pipe; 5. a second charging barrel; 501. a delivery pipe; 502. a second motor; 503. a second screw shaft; 504. a drive shaft; 505. a pulley; 506. a conveyor belt; 507. a machine base; 6. a third charging barrel; 601. a third motor; 602. a third screw axis.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-3, the present invention provides a technical solution: a feeding device for producing environment-friendly mortar with renewable resources comprises a processing production cavity 1, wherein a screening box 3 is arranged on the left side of the processing production cavity 1, a control box 2 is arranged below the left side of the processing production cavity 1, a first upper charging barrel 4 is arranged on the left side of the screening box 3, a second upper charging barrel 5 is arranged on the right side of the screening box 3, and a third upper charging barrel 6 is arranged above the right side of the second upper charging barrel 5;
the left lower side of the first upper charging barrel 4 is communicated with a feeding hopper 401, the middle of the inner side wall of the first upper charging barrel 4 is movably connected with a first spiral shaft 403, the right upper side of the first upper charging barrel 4 is communicated with a connecting pipe 404, the other end of the connecting pipe 404 is communicated with a screening box 3, the right lower side of the screening box 3 is communicated with a feeding pipe 301, the other end of the feeding pipe 301 is communicated with the left side of the lower side of the second upper charging barrel 5, the middle of the inner side wall of the second upper charging barrel 5 is movably connected with a second spiral shaft 503, the right upper side of the second upper charging barrel 5 is communicated with a feeding pipe 501, the other end of the feeding pipe 501 is communicated with the left side of the upper end face of the third upper charging barrel 6, the middle of the inner side wall of the third upper charging barrel 6 is movably connected with a third spiral shaft 602, the upper end face of the processing production cavity 1 is communicated with a feeding pipe 103, the other end of the feeding pipe 103 is communicated with the right side of the lower end face of the third upper charging barrel 6, and the middle of the feeding pipe 103 is fixedly connected with a metering valve 104 through a flange.
In this embodiment: the first motor 402, the second motor 502 and the third motor 601 are all of the following types: 90YYJT, a control box 2 is arranged below the left side of a processing production cavity 1, and a feeding device for producing environment-friendly mortar is further convenient to operate and control by the control box 2, a screening box 3 is arranged to facilitate screening of processing raw materials, a feed hopper 401 is communicated below the left side of a first upper feed cylinder 4, the materials enter the first upper feed cylinder 4 through the feed hopper 401, a first spiral shaft 403 in the first upper feed cylinder 4 rotates upwards in a spiral mode to facilitate conveying of the materials into the screening box 3 for screening, the processed materials are consistent in size, production quality of the environment-friendly mortar is guaranteed, the lower end of the screening box 3 is communicated with a second upper feed cylinder 5, the bottom end of the screening box 3 is high at the left side and low at the right side, screened raw materials are further convenient to be conveyed into the second upper feed cylinder 5, feeding efficiency is improved, a second spiral shaft 503 in the second upper feed cylinder 5 rotates upwards in a spiral mode to facilitate conveying of the screened materials into a third upper feed cylinder 6, the third screw shaft 602 in the third feeding barrel 6 rotates, so that materials can be conveniently conveyed into the processing and production cavity 1 for processing and production, the feeding device for environment-friendly mortar production achieves the effect of convenient feeding and processing, the feeding efficiency is high, the manpower is saved, and the production quality is improved.
As a technical optimization scheme of the utility model, the first motor 402 of up end fixedly connected with of first material loading barrel 4, the up end of first screw axis 403 runs through first material loading barrel 4 and extends to the outside of first material loading barrel 4 and the output fixed connection of first motor 402, and the slope of first material loading barrel 4 sets up, and the contained angle of first material loading barrel 4 and horizontal plane is between 40-50.
In this embodiment: the first screw shaft 403 is fixedly connected with the output end of the first motor 402, the first motor 402 is started, and the first screw shaft 403 is driven to rotate, so that materials can be conveniently conveyed into the screening box 3 for screening, and the processing quality of the environment-friendly mortar can be ensured to pass.
As a technical optimization scheme of the utility model, the left top fixedly connected with second motor 502 of feed cylinder 5 on the second, the output fixedly connected with driving shaft 504 of second motor 502, the up end of second screw axis 503 runs through feed cylinder 5 on the second and extends to the outside of feed cylinder 5 on the second, the equal fixedly connected with band pulley 505 of lateral wall of second screw axis 503 and driving shaft 504, the lateral wall swing joint of two band pulleys 505 has conveyer belt 506, feed cylinder 5 slope setting on the second, and the second is gone up the contained angle of feed cylinder 5 and horizontal plane and is 70-80 between.
In this embodiment: the second motor 502 is fixedly connected above the left side of the second feeding barrel 5, the second motor 502 is started, the conveying belt 506 synchronously drives the second spiral shaft 503 to rotate, and screened materials are further conveniently conveyed into the third feeding barrel 6.
As a technical optimization scheme of the utility model, the right side fixedly connected with third motor 601 of feed cylinder 6 is gone up to the third, and the right-hand member of third screw axis 602 runs through feed cylinder 6 and extends to the third and goes up the outside of feed cylinder 6 and the output fixed connection of third motor 601.
In this embodiment: the third screw shaft 602 is fixedly connected with the output end of the third motor 601, the third motor 601 is started to drive the third screw shaft 602 to rotate rightwards, and materials are further conveniently conveyed into the processing production cavity 1 for processing production.
As a technical optimization scheme of the utility model, the right side of feed cylinder 5 is provided with on the second with second motor 502 assorted frame 507, the bottom high right side of screening case 3 is low.
In this embodiment: be provided with through the right side of going up feed cylinder 5 on the second with second motor 502 assorted frame 507, and then with the convenient fixed second motor 502 of frame 507, with screening case 3 bottom left high right low, further conveniently will screen in the good raw materials carries feed cylinder 5 on the second, improve the efficiency of material loading.
As a technical optimization scheme of the utility model, the middle part fixedly connected with agitator motor 101 of 1 up end in processing production chamber, agitator motor 101's right side is provided with water pipe 102, water pipe 102 and 1 intercommunication in processing production chamber.
In this embodiment: through the middle part fixedly connected with agitator motor 101 at processing production chamber 1 up end, start agitator motor 101, conveniently stir the material in the mixed processing production chamber 1, guarantee that the material reaches the effect of homogeneous mixing, simultaneously, improve the production quality of environmental protection mortar.
As a technical optimization scheme of the utility model, the middle part of water pipe 102 loops through flange fixedly connected with flow valve 105 and control valve 106 from last to extremely down.
In this embodiment: the middle part of the water pipe 102 is sequentially provided with the flow valve 105 and the control valve 106 from top to bottom through the flange fixedly connected with, the control valve 106 is opened, water is added into the processing production cavity 1 conveniently, the flow valve 105 is convenient to meter the amount of the added water, the proportioning of the raw materials and the water is convenient to control, and the production quality of the environment-friendly mortar is further improved.
The working principle is as follows: firstly, a feed hopper 401 is communicated below the left side of a first upper charging barrel 4, materials enter the first upper charging barrel 4 through the feed hopper 401, a first spiral shaft 403 in the first upper charging barrel 4 spirally rotates upwards to conveniently convey the materials into a screening box 3 for screening, the sizes of the processed materials are consistent, the production quality of the environment-friendly mortar is ensured, the lower end of the screening box 3 is communicated with a second upper charging barrel 5, the bottom end of the screening box 3 is high at the left and low at the right, the screened materials are further conveniently conveyed into the second upper charging barrel 5, the feeding efficiency is improved, a second spiral shaft 503 in the second upper charging barrel 5 spirally rotates upwards to conveniently convey the screened materials into a third upper charging barrel 6, a third spiral shaft 602 in the third upper charging barrel 6 rotates to conveniently convey the materials into a processing production cavity 1 for processing production, and the feeding device for producing the environment-friendly mortar achieves the effect of convenient feeding and processing, the feeding efficiency is high, the labor is saved, and the production quality is improved.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a loading attachment is used in environmental protection mortar production of renewable resources, includes processing production chamber (1), its characterized in that: a screening box (3) is arranged on the left side of the processing production cavity (1), a control box (2) is arranged below the left side of the processing production cavity (1), a first upper charging barrel (4) is arranged on the left side of the screening box (3), a second upper charging barrel (5) is arranged on the right side of the screening box (3), and a third upper charging barrel (6) is arranged above the right side of the second upper charging barrel (5);
the left lower part of the first upper charging barrel (4) is communicated with a feeding hopper (401), the middle part of the inner side wall of the first upper charging barrel (4) is movably connected with a first spiral shaft (403), the right upper part of the first upper charging barrel (4) is communicated with a connecting pipe (404), the other end of the connecting pipe (404) is communicated with the sieving box (3), the right lower part of the sieving box (3) is communicated with a feeding pipe (301), the other end of the feeding pipe (301) is communicated with the left side of the lower part of the second upper charging barrel (5), the middle part of the inner side wall of the second upper charging barrel (5) is movably connected with a second spiral shaft (503), the right upper part of the second upper charging barrel (5) is communicated with a feeding pipe (501), the other end of the feeding pipe (501) is communicated with the left side of the upper end surface of the third upper charging barrel (6), the middle part of the inner side wall of the third upper charging barrel (6) is movably connected with a third spiral shaft (602), the upper end face of processing production chamber (1) intercommunication has inlet pipe (103), the right side intercommunication of terminal surface under the other end of inlet pipe (103) and third upper charging barrel (6), flange fixedly connected with metering valve (104) are passed through at the middle part of inlet pipe (103).
2. The feeding device for producing the environment-friendly mortar of renewable resources according to claim 1, characterized in that: the upper end face of the first upper charging barrel (4) is fixedly connected with a first motor (402), the upper end face of the first spiral shaft (403) penetrates through the first upper charging barrel (4) and extends to the outside of the first upper charging barrel (4) to be fixedly connected with the output end of the first motor (402), the first upper charging barrel (4) is obliquely arranged, and the included angle between the first upper charging barrel (4) and the horizontal plane is 40-50 degrees.
3. The feeding device for producing the environment-friendly mortar of renewable resources according to claim 1, characterized in that: the upper side of the left side of the second feeding barrel (5) is fixedly connected with a second motor (502), the output end of the second motor (502) is fixedly connected with a driving shaft (504), the upper end face of the second spiral shaft (503) penetrates through the second feeding barrel (5) and extends to the outside of the second feeding barrel (5), the outer side walls of the second spiral shaft (503) and the driving shaft (504) are fixedly connected with belt pulleys (505), the outer side walls of the two belt pulleys (505) are movably connected with a conveying belt (506), the second feeding barrel (5) is obliquely arranged, and the included angle between the second feeding barrel (5) and the horizontal plane is 70-80 degrees.
4. The feeding device for producing the environment-friendly mortar of renewable resources according to claim 1, characterized in that: the right side of the third upper charging barrel (6) is fixedly connected with a third motor (601), and the right end of the third screw shaft (602) penetrates through the third upper charging barrel (6) and extends to the outside of the third upper charging barrel (6) to be fixedly connected with the output end of the third motor (601).
5. The feeding device for producing the environment-friendly mortar of renewable resources according to claim 1, characterized in that: the right side of the second feeding barrel (5) is provided with a base (507) matched with a second motor (502), and the bottom end of the screening box (3) is high at the left and low at the right.
6. The feeding device for producing the environment-friendly mortar of renewable resources according to claim 5, characterized in that: the middle part of the upper end face of the processing production cavity (1) is fixedly connected with a stirring motor (101), the right side of the stirring motor (101) is provided with a water pipe (102), and the water pipe (102) is communicated with the processing production cavity (1).
7. The feeding device for producing the environment-friendly mortar of renewable resources according to claim 6, characterized in that: the middle part of the water pipe (102) is fixedly connected with a flow valve (105) and a control valve (106) through flanges from top to bottom in sequence.
CN202120046170.9U 2021-01-08 2021-01-08 Loading attachment is used in renewable resources's environmental protection mortar production Active CN214988157U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120046170.9U CN214988157U (en) 2021-01-08 2021-01-08 Loading attachment is used in renewable resources's environmental protection mortar production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120046170.9U CN214988157U (en) 2021-01-08 2021-01-08 Loading attachment is used in renewable resources's environmental protection mortar production

Publications (1)

Publication Number Publication Date
CN214988157U true CN214988157U (en) 2021-12-03

Family

ID=79139268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120046170.9U Active CN214988157U (en) 2021-01-08 2021-01-08 Loading attachment is used in renewable resources's environmental protection mortar production

Country Status (1)

Country Link
CN (1) CN214988157U (en)

Similar Documents

Publication Publication Date Title
CN209257228U (en) A kind of waterproof mortar process units of polymer modification for building
CN208232060U (en) A kind of mortar stirring device with automatic charging function
CN214988157U (en) Loading attachment is used in renewable resources's environmental protection mortar production
CN213533211U (en) High-efficient mixing arrangement is used in dry powder mortar production
CN213699701U (en) Mixing device for producing thermal insulation mortar
CN210820184U (en) Concrete production equipment
CN217698795U (en) Putty powder mixing apparatus with even rabbling mechanism
CN115805661A (en) Cement activity enhancement treatment device and treatment method thereof
CN214082148U (en) Automatic proportioning device of raw and other materials for cement manufacture
CN210939896U (en) High-efficient dry-mixed mortar mixes machine
CN209903565U (en) Concrete on-site preparation device
CN212498311U (en) Fly ash dry-mixed mortar production device
CN211709665U (en) Mixing mechanism for concrete mixing plant
CN208868969U (en) A kind of outfit extruder vacuum suction machine feed paddle device
CN209887858U (en) Dry powder gypsum mortar apparatus for producing
CN218255956U (en) Stirring station mortar premixing equipment
CN219563684U (en) Batching device
CN215038833U (en) Sand aerated concrete pouring mixer
CN221772160U (en) Metering mechanism for putty powder production line
CN217434658U (en) Dry powder mortar mixing stirring device
CN215702797U (en) Automatic control simple gravel homogenizing system for commercial concrete production
CN211913515U (en) Novel multi-functional powder processing in ceramic material preparation device
CN212266210U (en) Energy-saving high strength concrete mix equipment
CN218365553U (en) Premixed concrete admixture homogenization equipment
CN214982106U (en) Dry-mixed mortar mixer for construction site

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant