CN218188456U - Waste water filtering device - Google Patents

Waste water filtering device Download PDF

Info

Publication number
CN218188456U
CN218188456U CN202222262735.4U CN202222262735U CN218188456U CN 218188456 U CN218188456 U CN 218188456U CN 202222262735 U CN202222262735 U CN 202222262735U CN 218188456 U CN218188456 U CN 218188456U
Authority
CN
China
Prior art keywords
water
fixed
tank
waste
water receiving
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
CN202222262735.4U
Other languages
Chinese (zh)
Inventor
郭建荣
周建正
沈建锋
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.)
Zhejiang Southeastern New Wood Technology Co ltd
Original Assignee
Zhejiang Southeastern New Wood 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 Zhejiang Southeastern New Wood Technology Co ltd filed Critical Zhejiang Southeastern New Wood Technology Co ltd
Priority to CN202222262735.4U priority Critical patent/CN218188456U/en
Application granted granted Critical
Publication of CN218188456U publication Critical patent/CN218188456U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Filtration Of Liquid (AREA)

Abstract

The utility model relates to the technical field of filter equipment, specifically be a waste water filter equipment, including the water receiving case, the front of water receiving case is fixed with control panel, the inside of water receiving case is rotated and is connected with the tipping bucket, one side that the tipping bucket is close to the water receiving case is fixed with the filter plate, the right side of water receiving case is fixed with the dump bin, the right side of water receiving case is equipped with the positioning mechanism who is used for being fixed with the dump bin, the lower fixed surface of dump bin has the removal wheel, the right side of dump bin is equipped with the clearance mechanism that is used for wasing the tipping bucket. This waste water filter equipment drives the shower nozzle luffing motion through motor, pivot and connecting plate under clearance mechanism's effect to make the shower nozzle can wash each department of tipping bucket inner chamber and filter plate, and then make tipping bucket and filter plate can obtain thorough washing, will retrieve through filtration mouth and filter screen simultaneously and recycle, save the cost when the water economy resource.

Description

Waste water filtering device
Technical Field
The application relates to the technical field of filtering devices, in particular to a wastewater filtering device.
Background
At present, a large amount of waste water is generated in the paper making process of a paper mill. Particularly, in the processes of deslagging, pulp washing and rinsing of raw materials, a large amount of waste water rich in wood fibers and other impurities is generated, if the waste water is directly discharged, serious environmental pollution is inevitably caused, but a large amount of paper pulp often remains in the paper pulp waste water, if the waste water is directly discharged, the wood fibers are discharged in a white state, and the waste of resources is caused, so that a filtering device is usually arranged in a paper mill to intercept and collect solid waste in the waste water.
The example chinese patent, the utility model relates to the waste water treatment field, a waste water filter equipment is disclosed, its technical essential is, a waste water filter equipment, set up the chute at the support top including support and slope, the chute top is provided with the inlet pipe, the inlet pipe is located the chute lateral wall and evenly is provided with a plurality of discharging pipes, the chute below is provided with the water receiving tank, the opening has been seted up to the lateral wall that the water receiving tank is relative with the chute, opening base both sides are provided with the installation piece, it is connected with the pivot to rotate between two installation pieces, pivot one end is coaxial to be provided with first motor, the fixed tipping bucket that is equipped with in the pivot, the tipping bucket is close to the side of chute and is equipped with a plurality of filtration pores, one side that the chute was kept away from to the water receiving tank is provided with the pulp case, the water receiving tank lateral wall is located the opening both sides and corresponds to be provided with and hits the hitting and hits the device and replaces artifical paper pulp that filters out to clear up through hitting and beat, reduce user's work load, this patent can only hit the adhesion and hit the paper pulp that the device and can only can's removal can's inner chamber and can's removal can's the unable clean the wall of hitting to filter paper pulp that the middle wall that drops, this patent has just, this patent has resulted in the wall, paper pulp can's wall to be close to less.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, this application provides a waste water filter equipment, possesses advantages such as clearance effect is good, has solved and has hit the device of beating and can only shake the paper pulp on the wall of tipping bucket inner chamber both sides and fall and be close to the unable problem of clearing up of tipping bucket middle part and some less paper pulp stackss.
In order to achieve the above purpose, the present application provides the following technical solutions: a control panel is fixed on the front side of the water receiving tank, a tipping bucket is rotatably connected inside the water receiving tank, a filter plate is fixed on one side, close to the water receiving tank, of the tipping bucket, a waste tank is fixed on the right side of the water receiving tank, a positioning mechanism for fixing the waste tank is arranged on the right side of the water receiving tank, a moving wheel is fixed on the lower surface of the waste tank, and a cleaning mechanism for cleaning the tipping bucket is arranged on the right side of the waste tank;
clearance mechanism is including fixing the storage water tank on the dump bin right side, the last fixed surface of storage water tank has the water pump, the right-hand member intercommunication of water pump has the drinking-water pipe with the storage water tank intercommunication, the left end intercommunication of water pump has the delivery pipe, the one end intercommunication that the water pump was kept away from to the delivery pipe has the connecting plate, the left side of connecting plate is fixed with and is no less than two shower nozzles, the last fixed surface of dump bin has fixing base and fixed block, the back of the body wall of fixing base inner chamber is fixed with the motor, the outside of motor output shaft is fixed with rotates the fixed block of connection inside the fixing base.
By adopting the technical scheme, the spray head can be used for washing each part of the inner cavity of the tipping bucket and the filter plate, and the tipping bucket and the filter plate can be thoroughly cleaned.
Further, the connecting plate is fixed in the outside of pivot, the basin has been seted up to the inside of connecting plate, delivery pipe and shower nozzle all communicate with the basin.
Through adopting this technical scheme, make and fix and rotate about the connecting plate of epaxial along with the rotation of pivot, make the delivery pipe can provide the water source for the shower nozzle through the basin simultaneously.
Furthermore, a water filling port is formed in the upper surface of the water storage tank, and a tank cover is connected to the inner portion of the water filling port in a threaded mode.
By adopting the technical scheme, the water filling port enables the water storage tank to be added with water at any time so as to prevent the water in the water storage tank from being suddenly insufficient, and simultaneously, impurities are prevented from entering the water storage tank through the water filling port through the tank cover.
Further, a mounting groove is formed in one side, opposite to the fixing seat and the fixing block, of the fixing seat, a bearing is fixed inside the mounting groove, and the rotating shaft is fixed inside the bearing.
Through adopting this technical scheme, can not drive fixed block and fixing base and rotate together when making the pivot pass through the motor and rotating, support the both ends of pivot 510 through fixed block and fixing base simultaneously, avoid it to rock.
Furthermore, a first filtering opening is formed in the left side of the water storage tank, a second filtering opening is formed in the right side of the waste tank, and filter screens are fixed in the first filtering opening and the second filtering opening.
By adopting the technical scheme, the first filtering port and the second filtering port can reflow the water flushed along the tipping bucket flow waste bin to the water storage tank for reuse, and the water is filtered by the filter screen to prevent paper pulp and other impurities from flowing into the water storage tank.
Further, positioning mechanism is including fixing the protective housing on water receiving case right side, the diapire of protective housing inner chamber is fixed with electric putter, the outside of electric putter output shaft is fixed with the limiting plate, the right side of protective housing is fixed with the location case, the left side of waste bin is fixed with the locating piece of sliding connection in the location incasement portion.
By adopting the technical scheme, the waste bin is prevented from being far away from the tipping bucket due to external impact in the process of collecting paper pulp, so that the waste bin is prevented from spilling to the ground.
Further, the shape of locating box is the cuboid that inside cavity and right side and lower surface all lacked, the shape of limiting plate is L shape.
By adopting the technical scheme, the positioning block cannot move left and right after sliding into the positioning box, and the positioning block cannot be separated from the positioning box through the L shape.
Further, the upper surface of location case is seted up and is provided with the spacing hole that runs through for the limiting plate, and through spacing hole and location case clearance fit, the upper surface of locating piece is seted up and is provided with the spacing groove for the limiting plate grafting.
By adopting the technical scheme, the limiting plate can penetrate through the positioning box through the limiting hole and the limiting groove and be inserted into the positioning block.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. this waste water filter equipment drives the shower nozzle luffing motion through motor, pivot and connecting plate under clearance mechanism's effect to make the shower nozzle can wash each department of tipping bucket inner chamber and filter plate, and then make tipping bucket and filter plate can obtain thorough washing, will retrieve through filtration mouth and filter screen simultaneously and recycle, save the cost when the water economy resource.
2. This waste water filter equipment, through the location case under positioning mechanism's effect, locating piece and limiting plate are fixed a position the dump bin, prevent that the dump bin from keeping away from the tipping bucket because of receiving external impact at the in-process of collecting paper pulp, lead to unrestrained to ground between in the tipping bucket, drive the limiting plate through electric putter simultaneously and reciprocate, make the locating piece can't break away from the location case.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is a schematic view of the cleaning mechanism of the present application;
FIG. 3 is a schematic view of a connection structure of a fixing base and a motor according to the present application;
fig. 4 is a schematic view of the positioning mechanism of the present application.
In the figure: 1. a control panel; 2. a water receiving tank; 3. filtering a plate; 4. tipping; 5. a cleaning mechanism; 501. a water storage tank; 502. a water pumping pipe; 503. a water pump; 504. a water supply pipe; 505. a connecting plate; 506. a spray head; 507. a fixed seat; 508. a filter screen; 509. a motor; 510. a rotating shaft; 511. a fixed block; 6. a waste bin; 7. a moving wheel; 8. a positioning mechanism; 801. an electric push rod; 802. a protective box; 803. a positioning box; 804. positioning a block; 805. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a wastewater filtering apparatus in this embodiment includes a water receiving tank 2, a control panel 1 is fixed on a front surface of the water receiving tank 2, a tipping bucket 4 is rotatably connected inside the water receiving tank 2, a filter plate 3 is fixed on one side of the tipping bucket 4 close to the water receiving tank 2, a waste bin 6 is fixed on a right side of the water receiving tank 2, a positioning mechanism 8 for fixing the waste bin 6 is disposed on the right side of the water receiving tank 2, a moving wheel 7 is fixed on a lower surface of the waste bin 6, a cleaning mechanism 5 for cleaning the tipping bucket 4 is disposed on the right side of the waste bin 6, electrical components appearing in the text are electrically connected to a master controller and a power supply, the master controller can be a conventional known device for controlling a computer, and a power connection technology disclosed in the prior art is not described in detail herein.
Referring to fig. 2-3, in order to clean the pulp, the cleaning mechanism 5 in this embodiment includes a water storage tank 501 fixed on the right side of the waste bin 6, a water pump 503 is fixed on the upper surface of the water storage tank 501, a water pumping pipe 502 communicated with the water storage tank 501 is connected to the right end of the water pump 503, a water supply pipe 504 is connected to the left end of the water supply pipe 503, a connection plate 505 is connected to one end of the water supply pipe 504 away from the water pump 503, at least two nozzles 506 are fixed on the left side of the connection plate 505, the water pump 503 pumps the water in the water storage tank 501 through the water pumping pipe 502 and conveys the water into the connection plate 505 through the water supply pipe 505, the nozzles 506 are supplied with the water through the connection plate 505, a fixing seat 507 and a fixing block 511 are fixed on the upper surface of the waste bin 6, a motor 509 is fixed on the back wall of the inner cavity, the fixing block 511 rotatably connected to the inside the fixing seat 507 is fixed on the outer side of the output shaft of the motor 509, and the nozzles 506 are driven to swing up and down, so that the nozzles 506 can flush each position of the inner cavity of the tipping bin 4 and the filter plate 3, and the tipping bin 4 and the filter plate 3 can be cleaned thoroughly.
Connecting plate 505 is fixed in the outside of pivot 510, make and fix connecting plate 505 in pivot 510 and do left and right sides round rotation along with the rotation that motor 509 drove pivot 510, thereby make shower nozzle 506 can the luffing motion, the basin has been seted up to connecting plate 505's inside, delivery pipe 504 and shower nozzle 506 all communicate with the basin, make delivery pipe 504 can provide the water source for shower nozzle 506 through the basin, the water filling port has been seted up to storage water tank 501's upper surface, the water filling port makes storage water tank 501 can add water at any time, in case the water in storage water tank 501 is suddenly not enough, the internal thread connection of water filling port has the case lid, prevent through the case lid that impurity from getting into in the storage water tank 501 through the water filling port.
Mounting grooves are formed in one side, opposite to the fixing seat 507, of the fixing seat 511, two ends of the rotating shaft 510 are supported through the fixing seat 511 and the fixing seat 507 to avoid shaking of the fixing seat, a bearing is fixed inside the mounting grooves, the rotating shaft 510 is fixed inside the bearing, the fixing seat 511 and the fixing seat 507 cannot be driven to rotate together when the rotating shaft 510 rotates through the motor 509, a first filtering port is formed in the left side of the water storage tank 501, a second filtering port is formed in the right side of the waste tank 6, the heights, the lengths and the widths of inner cavities of the first filtering port and the second filtering port are equal, water which is washed out and flows in the waste tank 6 along with the flow 4 flows back to the water storage tank 501 to be reused under the action of the first filtering port and the second filtering port, a tipping bucket 508 is fixed in the first filtering port and the second filtering port, part of water is filtered through the filtering net 508, and paper pulp and other impurities are prevented from flowing into the water storage tank 501.
Referring to fig. 4, in order to prevent the waste bin 6 from moving, the positioning mechanism 8 in this embodiment includes a protection box 802 fixed on the right side of the water receiving box 2, an electric push rod 801 is fixed on the bottom wall of the inner cavity of the protection box 802, a limiting plate 805 is fixed on the outer side of the output shaft of the electric push rod 801, a positioning box 803 is fixed on the right side of the protection box 802, and a positioning block 804 slidably connected inside the positioning box 803 is fixed on the left side of the waste bin 6.
The positioning box 803 is a cuboid which is hollow inside and has a missing right side and a missing lower surface, so that the positioning block 804 cannot move left and right after sliding into the positioning box 803, the limiting plate 805 is L-shaped, the upper surface of the positioning box 803 is provided with a limiting hole for the limiting plate 805 to penetrate through, and is in clearance fit with the positioning box 803 through the limiting hole, the upper surface of the positioning block 804 is provided with a limiting groove for the limiting plate 805 to be inserted, the L-shaped limiting plate 805 penetrates through the limiting hole and is inserted into the limiting groove to fix the positioning block 804, and the positioning block 804 cannot be separated from the positioning box 803 to fix the waste material box 6.
The working principle of the embodiment is as follows:
1. when cleaning the paper pulp in the skip bucket 4, firstly turning over the skip bucket 4 to make the skip bucket 4 and the waste bin 6 attached, then starting the water pump 503, pumping the water in the water storage tank 501 by the water pumping pipe 502 and conveying the water into the connecting plate 505 by the water supply pipe 504, then supplying the water to the spray heads 506 by the connecting plate 505, simultaneously starting the motor 509, driving the rotating shaft 510 to rotate by the motor 509 through the output shaft, driving the connecting plate 505 to rotate to the right side by a certain angle while the rotating shaft 510 rotates, and opening the spray heads 506 to flush the skip bucket 4 while the connecting plate 505 rotates, when the spray heads 506 flush to the top of the filter plate 3, closing the motor 509 and restarting the motor 509 to drive the connecting plate 505 to rotate to the left side to return to the original position by the rotating shaft 510, thus finishing flushing the skip bucket 4 by repeating five to six times, and simultaneously adjusting the flushing times by programming according to the actual conditions.
2. Paper pulp on the tipping bucket 4 and the filter plate 3 is washed into the waste tank 6, meanwhile, the washed water also flows into the waste tank 6 along the tipping bucket 4, the water flowing into the waste tank 6 flows back to the water storage tank 501 through a filter opening, and the water is filtered through the filter screen 508 in the filter opening, so that the paper pulp and impurities do not flow into the water storage tank 501 through the filter opening, the cleaning mechanism 5 drives the spray head 506 to swing up and down through the motor 509, the rotating shaft 510 and the connecting plate 505, and the spray head 506 can wash each part of the inner cavity of the tipping bucket 4 and the filter plate 3, so that the tipping bucket 4 and the filter plate 3 can be thoroughly cleaned, meanwhile, the paper pulp can be recycled and reused through the filter opening and the filter screen 508, and the cost is saved while water resources are saved.
(3) When the tipping bucket 4 and the filter plate 3 are cleaned, the electric push rod 801 is started, the electric push rod 801 drives the limit plate 805 to move upwards through the output shaft, the limit plate 805 moves upwards and is separated from the locating block 804, the waste bin 6 can be pulled towards the right side after the limit plate 805 is completely separated from the locating block 804, the locating block 804 moves towards the right side along with the waste bin 6 and is separated from the locating box 803, the locating mechanism 8 locates the waste bin 6 through the locating box 803, the locating block 804 and the limit plate 805, the waste bin 6 is prevented from being impacted by external force to be far away from the tipping bucket 4 in the process of collecting paper pulp, the waste bin 4 is prevented from being splashed to the ground, meanwhile, the electric push rod 801 drives the limit plate 805 to move up and down, and the locating block 804 cannot be separated from the locating box 803.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a waste water filter equipment, includes water receiving tank (2), its characterized in that: a control panel (1) is fixed on the front side of the water receiving tank (2), a tipping bucket (4) is rotatably connected inside the water receiving tank (2), a filter plate (3) is fixed on one side, close to the water receiving tank (2), of the tipping bucket (4), a waste tank (6) is fixed on the right side of the water receiving tank (2), a positioning mechanism (8) for fixing the waste tank (6) is arranged on the right side of the water receiving tank (2), a moving wheel (7) is fixed on the lower surface of the waste tank (6), and a cleaning mechanism (5) for cleaning the tipping bucket (4) is arranged on the right side of the waste tank (6);
clearance mechanism (5) are including fixing storage water tank (501) on dump bin (6) right side, the upper surface mounting of storage water tank (501) has water pump (503), the right-hand member intercommunication of water pump (503) has drinking-water pipe (502) with storage water tank (501) intercommunication, the left end intercommunication of water pump (503) has delivery pipe (504), the one end intercommunication that water pump (503) were kept away from in delivery pipe (504) has connecting plate (505), the left side of connecting plate (505) is fixed with and is no less than two shower nozzles (506), the upper surface mounting of dump bin (6) has fixing base (507) and fixed block (511), the back wall of fixing base (507) inner chamber is fixed with motor (509), the outside of motor (509) output shaft is fixed with rotates fixed block (511) of connection inside fixing base (507).
2. A wastewater filtration plant according to claim 1 and further characterized in that: the connecting plate (505) is fixed on the outer side of the rotating shaft (510), a water tank is arranged inside the connecting plate (505), and the water supply pipe (504) and the spray head (506) are both communicated with the water tank.
3. A wastewater filtering device according to claim 1, characterized in that: the upper surface of the water storage tank (501) is provided with a water filling port, and the inside of the water filling port is in threaded connection with a tank cover.
4. A wastewater filtering device according to claim 2, characterized in that: the fixing base (507) and the relative one side of fixed block (511) have all been seted up the mounting groove, the inside of mounting groove is fixed with the bearing, pivot (510) are fixed inside the bearing.
5. A wastewater filtering device according to claim 1, characterized in that: a first filtering opening is formed in the left side of the water storage tank (501), a second filtering opening is formed in the right side of the waste tank (6), and a filtering net (508) is fixed in each of the first filtering opening and the second filtering opening.
6. A wastewater filtering device according to claim 1, characterized in that: positioning mechanism (8) are including fixing protection box (802) on water receiving tank (2) right side, the diapire of protection box (802) inner chamber is fixed with electric putter (801), the outside of electric putter (801) output shaft is fixed with limiting plate (805), the right side of protection box (802) is fixed with location case (803), the left side of waste bin (6) is fixed with locating piece (804) of sliding connection in location case (803) inside.
7. A waste water filtering device according to claim 6, characterized in that: the positioning box (803) is in a cuboid shape with a hollow interior and missing right side and lower surface, and the limiting plate (805) is in an L shape.
8. A wastewater filtration plant according to claim 6 and wherein: the upper surface of location case (803) is seted up and is provided with the spacing hole that runs through for limiting plate (805), and through spacing hole and location case (803) clearance fit, the upper surface of locating piece (804) is seted up and is provided with the spacing groove that is provided with limiting plate (805) grafting.
CN202222262735.4U 2022-08-26 2022-08-26 Waste water filtering device Active CN218188456U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222262735.4U CN218188456U (en) 2022-08-26 2022-08-26 Waste water filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222262735.4U CN218188456U (en) 2022-08-26 2022-08-26 Waste water filtering device

Publications (1)

Publication Number Publication Date
CN218188456U true CN218188456U (en) 2023-01-03

Family

ID=84659049

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222262735.4U Active CN218188456U (en) 2022-08-26 2022-08-26 Waste water filtering device

Country Status (1)

Country Link
CN (1) CN218188456U (en)

Similar Documents

Publication Publication Date Title
CN108856093B (en) Water-saving efficient ore cleaning equipment
CN211330623U (en) Be applied to scrubbing device who washs pond
CN114160480B (en) Sand-powder separation equipment for concrete and method thereof
CN218188456U (en) Waste water filtering device
CN112246007A (en) Desanding and purifying equipment for constructional engineering
CN218191333U (en) Can collect cleaning equipment for metal surface treatment of waste material
CN214767507U (en) Traditional chinese medicine medicinal material belt cleaning device
CN214078073U (en) Valve production is with valve cleaning device who has multiple clean function
CN213192752U (en) Automatic reclaimed water recycling system
CN209866243U (en) Vibrating lead slime crushing and cleaning integrated machine
CN111298515B (en) Concrete system is retrieved in tank car carwash
CN114308830A (en) A self-cleaning device for sealwort processing
CN209663823U (en) Rosin turns round wiper mechanism
CN207357657U (en) A kind of use for laboratory sandstone cleaning device
CN221183949U (en) Water-saving vibrating ore washer
CN214718761U (en) Automatic washing device for screw machining
CN220804391U (en) Screening and collecting device for steel casting processing waste
CN213997001U (en) Plastics impurity removing device is used in cell phone stand production
CN216572792U (en) Clean papermaking sediment thick liquid fibre separation retrieval and utilization device
CN220027961U (en) Aggregate screening and cleaning device
CN215655693U (en) Sand washer is with stirring structure
CN219305968U (en) Chinese chestnut belt cleaning device
CN214288659U (en) Meat grinder with self-cleaning function
CN219187860U (en) Circulating water medicine washing machine
CN219112174U (en) Washing device for sand-stone separator

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant