CN214360702U - Chemical adding device for industrial wastewater treatment - Google Patents
Chemical adding device for industrial wastewater treatment Download PDFInfo
- Publication number
- CN214360702U CN214360702U CN202023268500.3U CN202023268500U CN214360702U CN 214360702 U CN214360702 U CN 214360702U CN 202023268500 U CN202023268500 U CN 202023268500U CN 214360702 U CN214360702 U CN 214360702U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- box
- rotating shaft
- wastewater treatment
- reaction box
- 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
Links
Images
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model discloses a chemical adding device for industrial wastewater treatment in the technical field of wastewater treatment, which comprises a reaction box, wherein the side end of the reaction box is fixedly connected with a pressure water pump through a connecting pipe, and the side end of the pressure water pump is fixedly connected with a preliminary filter box through a connecting pipe; the upper end of the reaction box is fixedly connected with a box cover, the upper end of the box cover is fixedly connected with a connector, the upper end of the connector is fixedly connected with a preliminary mixing box, and the upper end of the preliminary mixing box is fixedly connected with a feeding pipe; the rear end of the reaction box is fixedly connected with a motor base, the upper end of the motor base is fixedly connected with a motor, the output shaft end of the motor is fixedly connected with a first rotating shaft, the circumferential surface of the first rotating shaft is fixedly connected with a driving tooth, the driving tooth is meshed with a driven tooth, and the inner part of the end surface of the driven tooth is fixedly connected with a second rotating shaft; the circumferential surfaces of the first rotating shaft and the second rotating shaft are fixedly connected with stirring blades; the front end of the reaction box is provided with a water outlet. The utility model discloses a to the secondary mixing of medicament, improved the waste water treatment effect.
Description
Technical Field
The utility model relates to a waste water treatment technical field specifically is a charge device for industrial waste water treatment.
Background
The industrial wastewater comprises production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water.
With the rapid development of industry, the variety and quantity of waste water are rapidly increased, the pollution to water bodies is more and more extensive and serious, and the health and the safety of human beings are threatened. Therefore, the treatment of industrial wastewater is more important than the treatment of municipal sewage for environmental protection, and a sewage treatment agent is required in the treatment of industrial wastewater, and the sewage treatment agent can enable the industrial wastewater to reach the discharge standard.
However, in the traditional wastewater treatment dosing mode, the blended medicament is often directly added into the wastewater, secondary mixing of the medicament is lacked, the wastewater treatment effect is slow, and some wastewater treatment medicaments are not fully mixed and even cannot meet the requirement of wastewater treatment.
Based on this, the utility model designs a charge device for industrial waste water treatment to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a following technical scheme:
a chemical adding device for industrial wastewater treatment comprises a reaction box, wherein a pressure water pump is fixedly connected to the side end of the reaction box through a connecting pipe, a primary filter box is fixedly connected to the side end of the pressure water pump through a connecting pipe, a clamping groove is formed in the primary filter box, and a filter plate is clamped in the clamping groove; the upper end of the reaction box is fixedly connected with a box cover, the upper end of the box cover is fixedly connected with a connector, the upper end of the connector is fixedly connected with a preliminary mixing box, and the upper end of the preliminary mixing box is fixedly connected with a feeding pipe; a T-shaped groove is formed in the upper end of the box cover, a T-shaped block is connected to the inside of the T-shaped groove in a sliding mode, a valve plate is fixedly connected to the upper end of the T-shaped block, a lead screw is connected to the inside of the valve plate in a threaded mode, and one end, away from the valve plate, of the lead screw is fixedly connected with the rocking handle; the rear end of the reaction box is fixedly connected with a motor base, the upper end of the motor base is fixedly connected with a motor, the output shaft end of the motor is fixedly connected with a first rotating shaft, the circumferential surface of the first rotating shaft is fixedly connected with a driving tooth, the driving tooth is meshed with a driven tooth, and the inner part of the end surface of the driven tooth is fixedly connected with a second rotating shaft; the circumferential surfaces of the first rotating shaft and the second rotating shaft are fixedly connected with stirring blades; the front end of the reaction box is provided with a water outlet.
As a further proposal of the utility model, the clamping groove and the filter plate are provided with a plurality of grooves and evenly distributed inside the preliminary filter box. During operation, pressure water pump starts the back, and waste water at first enters into preliminary rose box from the connecting pipe inside, and preliminary filtration is carried out to waste water to the inside filter of preliminary rose box, and the three-layer filter filters the waste residue in the industrial waste water tentatively, is convenient for next to the further processing to industrial waste water.
As a further proposal of the utility model, the sealing cover is sleeved on the upper end of the preliminary filter box. During the industry, sealed lid makes preliminary rose box sealed, starts pressure water pump, and industrial waste water gets into preliminary rose box under the effect of pressure and filters, and preliminary rose box uses after a period, can open sealed lid, changes inside filter.
As a further scheme of the utility model, pressure water pump rear end fixedly connected with breather pipe, pressure water pump's one end and preliminary mixing box rear end fixed connection are kept away from to the breather pipe. The during operation, when pressure water pump started, pressure water pump got rid of inside air earlier, then waste water just can get into preliminary rose box, gets into the reaction incasement portion at last, and the air of getting rid of can enter into preliminary mixing box through the breather pipe in, and the mixing rate of medicament has been accelerated to the gassing in the preliminary mixing box.
As a further scheme of the utility model, reaction box upper end fixedly connected with bearing frame, the inside rotation of bearing frame is connected with the lead screw. The during operation rotates the rocking handle, can drive the lead screw and rotate, finally makes the valve plate get into the connector, plugs up the connector, and the inside medicament of preliminary mixing box of being convenient for is preliminary mixed, reverses the rocking handle after mixing the completion, and the medicament enters into in the reaction box through the connecting pipe.
As a further proposal of the utility model, the driven teeth and the second rotating shaft are provided with two teeth and are symmetrically distributed on two sides of the driving teeth. During operation, the motor is started to drive the first rotating shaft to rotate, so that the driving tooth rotates, the two driven teeth meshed with the driving tooth rotate to drive the second rotating shaft to rotate, and finally, the rotation of the stirring blades can be realized to mix the medicament in the reaction box.
As a further proposal of the utility model, the stirring leaves are provided with a plurality of, and the circular holes have been seted up on the partial stirring leaves. During operation, a plurality of stirring leaves make even and waste water of medicament mix, make medicament and waste water fully produce the reaction, the circular port of seting up on the partial stirring leaf has increased the mobility that medicament and waste water mix for the reaction rate of medicament and waste water.
As a further proposal of the utility model, the bottom surface inside the reaction box is an inclined plane, and the inclined plane inclines towards the direction of the water outlet. When the reaction tank works, after the reaction of the wastewater and the medicament is finished, the wastewater after treatment can be discharged to a reasonable position by communicating the water outlet with an external pipeline, and the water outlet can easily discharge the treated wastewater by the inclined bottom surface in the reaction tank.
Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
through the reaction box, the pressure water pump, the breather pipe, preliminary mixing box, the inlet pipe, the valve plate, the rocking handle, including a motor, a stirring leaf, the cooperation of initiative tooth and driven tooth is used, the medicament that will mix can be put into preliminary mixing box inside through the inlet pipe, the breather pipe of preliminary mixing box rear end communicates pressure water pump, when pressure water pump is to the reaction box industrial waste water of taking out, the gaseous of pressure pump exhaust enters preliminary mixing box through the breather pipe, the preliminary mixing of medicament has been accelerated to the gassing, after the medicament mixes, utilize the rocking handle to remove the valve plate, the medicament enters into the reaction box inside, then the starter motor, under the rotation of initiative tooth and driven tooth, the stirring leaf is driven at last to make medicament and industrial waste water mix, be convenient for medicament and industrial waste water reaction, make industrial waste water reach emission standard, when having solved traditional waste water treatment and adding medicine, lack the problem to medicament secondary mixing, the secondary mixing of the medicament in the wastewater is realized, and the wastewater treatment effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an enlarged schematic view of a portion a of fig. 1 according to the present invention;
FIG. 3 is a schematic view of the preliminary filtering tank of the present invention with the sealing cover removed;
fig. 4 is an enlarged schematic view of a portion B of fig. 3 according to the present invention;
fig. 5 is a rear view of the present invention;
FIG. 6 is a right side view of the present invention;
fig. 7 is an enlarged schematic view of part C of the present invention;
FIG. 8 is a schematic sectional view of the inside of the reaction box in a right view according to the present invention;
fig. 9 is an enlarged schematic view of a portion D of fig. 8 according to the present invention;
FIG. 10 is a schematic cross-sectional view of the preliminary mixing tank in a top view of the present invention;
FIG. 11 is a schematic sectional view of the interior of the reaction box in a plan view according to the present invention;
fig. 12 is an enlarged schematic view of a portion E of fig. 11 according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a reaction box; 2. a connecting pipe; 3. a pressure water pump; 4. a water outlet; 5. a preliminary filter tank; 6. a sealing cover; 7. a breather pipe; 8. a preliminary mixing tank; 9. a feed pipe; 10. a connecting port; 11. a box cover; 12. A T-shaped slot; 13. a screw rod; 14. a valve plate; 15. a T-shaped block; 16. a bearing seat; 17. a rocking handle; 18. A card slot; 19. a filter plate; 20. a motor base; 21. a motor; 22. a first rotating shaft; 23. stirring blades; 24. A second rotating shaft; 25. a circular hole; 26. a driving tooth; 27. and a driven tooth.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-12, the present invention provides a technical solution:
a chemical adding device for industrial wastewater treatment comprises a reaction box 1, wherein the side end of the reaction box 1 is fixedly connected with a pressure water pump 3 through a connecting pipe 2, the side end of the pressure water pump 3 is fixedly connected with a primary filter box 5 through the connecting pipe 2, a clamping groove 18 is formed in the primary filter box 5, and a filter plate 19 is clamped in the clamping groove 18; the upper end of the reaction box 1 is fixedly connected with a box cover 11, the upper end of the box cover 11 is fixedly connected with a connector 10, the upper end of the connector 10 is fixedly connected with a preliminary mixing box 8, and the upper end of the preliminary mixing box 8 is fixedly connected with a feeding pipe 9; the upper end of the box cover 11 is provided with a T-shaped groove 12, a T-shaped block 15 is connected inside the T-shaped groove 12 in a sliding manner, the upper end of the T-shaped block 15 is fixedly connected with a valve plate 14, a lead screw 13 is connected inside the valve plate 14 in a threaded manner, and one end, far away from the valve plate 14, of the lead screw 13 is fixedly connected with a rocking handle 17; the rear end of the reaction box 1 is fixedly connected with a motor base 20, the upper end of the motor base 20 is fixedly connected with a motor 21, the output shaft end of the motor 21 is fixedly connected with a first rotating shaft 22, the circumferential surface of the first rotating shaft 22 is fixedly connected with a driving tooth 26, the driving tooth 26 is meshed with a driven tooth 27, and the inner part of the end surface of the driven tooth 27 is fixedly connected with a second rotating shaft 24; the circumferential surfaces of the first rotating shaft 22 and the second rotating shaft 24 are fixedly connected with stirring blades 23; the front end of the reaction box 1 is provided with a water outlet 4.
As an embodiment of the present invention, the clamping groove 18 and the filtering plate 19 are provided with a plurality of grooves and are uniformly distributed inside the primary filtering box 5. During operation, pressure water pump 3 starts the back, and waste water at first enters into preliminary filter box 5 from connecting pipe 2 inside, and preliminary filter 19 of preliminary filter box 5 inside carries out preliminary filtration to waste water, and three-layer filter 19 filters the waste residue in the industrial waste water tentatively, is convenient for next further processing to industrial waste water.
As an embodiment of the utility model, the sealing cover 6 is sleeved on the upper end of the preliminary filtering box 5. During the industry, sealed lid 6 makes preliminary rose box 5 sealed, starts pressure water pump 3, and industrial waste water gets into preliminary rose box 5 under the effect of pressure and filters, and preliminary rose box 5 uses after a period, can open sealed lid 6, changes inside filter 19.
As an embodiment of the utility model, 3 rear end fixedly connected with breather pipes 7 of pressure water pump, breather pipes 7 keep away from 3 one end of pressure water pump and 8 rear end fixed connection of preliminary mixing box. The during operation, when pressure water pump 3 starts, pressure water pump 3 will get rid of inside air earlier, then waste water just can get into preliminary rose box 5, gets into reaction box 1 inside at last, and the air of getting rid of can enter into preliminary mixing box 8 through breather pipe 7 in, and the mixing rate of medicament has been accelerated to the gassing in the preliminary mixing box 8.
As an embodiment of the utility model, 1 upper end fixedly connected with bearing frame 16 of reaction box, 16 inside rotations of bearing frame are connected with lead screw 13. The during operation rotates rocking handle 17, can drive lead screw 13 and rotate, finally makes valve plate 14 get into connector 10, plugs up connector 10, and the preliminary mixing of the inside medicament of preliminary mixing box 8 of being convenient for reverses rocking handle 17 after the mixture is accomplished, and the medicament enters into in reaction box 1 through connecting pipe 2.
As an embodiment of the present invention, two driven teeth 27 and two rotating shafts 24 are provided, and the two driven teeth and the two rotating shafts are symmetrically distributed on two sides of the driving tooth 26. During operation, the motor 21 is started to drive the first rotating shaft 22 to rotate, so that the driving tooth 26 rotates, the two driven teeth 27 meshed with the driving tooth 26 rotate to drive the second rotating shaft 24 to rotate, and finally, the stirring blades 23 can rotate to mix the medicament in the reaction box 1.
As an embodiment of the present invention, the stirring blade 23 is provided with a plurality of stirring blades, and a circular hole 25 is formed on a part of the stirring blade 23. During operation, a plurality of stirring leaves 23 make even and the waste water of medicament mix, make medicament and waste water fully produce the reaction, the circular port 25 of seting up on some stirring leaves 23 has increased the mobility that medicament and waste water mix for the reaction rate of medicament and waste water.
In one embodiment of the present invention, the bottom surface inside the reaction box 1 is an inclined surface, and the inclined surface is inclined toward the outlet 4. When the reaction tank works, after the wastewater and the medicament react, the water outlet 4 is communicated with an external pipeline, the treated wastewater can be discharged to a reasonable position, and the inclined bottom surface in the reaction tank 1 enables the water outlet 4 to easily discharge the treated wastewater.
One specific application of this embodiment is:
when the utility model is used, firstly, the valve plate 14 is determined inside the connecting port 10, the connecting port 10 is blocked, then the medicament is added into the primary mixing box 8 through the inlet pipe 9, the pressure water pump 3 is started simultaneously, the internal air is firstly discharged when the pressure water pump 3 extracts the waste water, the discharged air enters the primary mixing box 8 through the vent pipe 7 to generate bubbles, the primary mixing of the medicament is accelerated, meanwhile, the industrial waste water reaches the interior of the primary filtering box 5 through the connecting pipe 2, the multi-layer filtering plate 19 enables the solid waste residue in the industrial waste water to be primarily filtered, the industrial waste water in the reaction box 1 is convenient to be further treated next, after the primary filtering box 5 is used for a period of time, the sealing cover 6 can be opened, the filtering plate 19 is replaced from the clamping groove 18, after the primarily filtered industrial waste water enters the interior of the reaction box 1, the rocking handle 17 is firstly rotated, under the limitation of the T-shaped groove 12 and the T-shaped block 15, valve plate 14 removes, the medicament enters into reaction box 1 inside through connector 10 and mixes with industrial waste water, open motor 21 this moment, motor 21 drives pivot 22 and initiative tooth 26 and rotates, and then drive driven tooth 27 and pivot two 24 rotations, make stirring leaf 23 stir the industrial waste water of incasement portion, the mixture of medicament and industrial waste water has been accelerated, the medicament diffuses in industrial waste water, close motor 21 afterwards, a period of stewing, the medicament reacts with industrial waste water, industrial waste water is handled, outside valve and pipeline can be connected to outlet 4, industrial waste water that will handle and finish discharges the assigned position, the utility model provides a traditional waste water treatment adds the medicine, lack the problem of mixing the medicament secondary, realized that the medicament secondary mixes in waste water, improved the waste water treatment effect.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a charge device for industrial waste water treatment, includes reaction box (1), its characterized in that: the side end of the reaction box (1) is fixedly connected with a pressure water pump (3) through a connecting pipe (2), the side end of the pressure water pump (3) is fixedly connected with a preliminary filter box (5) through the connecting pipe (2), a clamping groove (18) is formed in the preliminary filter box (5), and a filter plate (19) is clamped in the clamping groove (18); the upper end of the reaction box (1) is fixedly connected with a box cover (11), the upper end of the box cover (11) is fixedly connected with a connecting port (10), the upper end of the connecting port (10) is fixedly connected with a preliminary mixing box (8), and the upper end of the preliminary mixing box (8) is fixedly connected with a feeding pipe (9); the upper end of the box cover (11) is provided with a T-shaped groove (12), a T-shaped block (15) is connected in the T-shaped groove (12) in a sliding mode, the upper end of the T-shaped block (15) is fixedly connected with a valve plate (14), a lead screw (13) is connected in the valve plate (14) in a threaded mode, and one end, far away from the valve plate (14), of the lead screw (13) is fixedly connected with a rocking handle (17); a motor base (20) is fixedly connected to the rear end of the reaction box (1), a motor (21) is fixedly connected to the upper end of the motor base (20), a first rotating shaft (22) is fixedly connected to the output shaft end of the motor (21), a driving tooth (26) is fixedly connected to the circumferential surface of the first rotating shaft (22), a driven tooth (27) is meshed with the driving tooth (26), and a second rotating shaft (24) is fixedly connected to the inner portion of the end surface of the driven tooth (27); the circumferential surfaces of the first rotating shaft (22) and the second rotating shaft (24) are fixedly connected with stirring blades (23); the front end of the reaction box (1) is provided with a water outlet (4).
2. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: the clamping grooves (18) and the filter plates (19) are arranged in a plurality of numbers and are uniformly distributed inside the primary filter box (5).
3. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: and the upper end of the primary filter box (5) is sleeved with a sealing cover (6).
4. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: pressure water pump (3) rear end fixedly connected with breather pipe (7), the one end and preliminary mixing box (8) rear end fixed connection of pressure water pump (3) are kept away from in breather pipe (7).
5. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: the reaction box is characterized in that a bearing seat (16) is fixedly connected to the upper end of the reaction box (1), and a screw rod (13) is rotatably connected to the inside of the bearing seat (16).
6. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: the driven teeth (27) and the second rotating shaft (24) are arranged in two numbers and are symmetrically distributed on two sides of the driving tooth (26).
7. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: the stirring blades (23) are provided with a plurality of stirring blades, and a circular hole (25) is formed in part of the stirring blades (23).
8. The chemical adding device for industrial wastewater treatment according to claim 1, characterized in that: the bottom surface of the interior of the reaction box (1) is an inclined surface, and the inclined surface inclines towards the direction of the water outlet (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202023268500.3U CN214360702U (en) | 2020-12-29 | 2020-12-29 | Chemical adding device for industrial wastewater treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202023268500.3U CN214360702U (en) | 2020-12-29 | 2020-12-29 | Chemical adding device for industrial wastewater treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214360702U true CN214360702U (en) | 2021-10-08 |
Family
ID=77949780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202023268500.3U Active CN214360702U (en) | 2020-12-29 | 2020-12-29 | Chemical adding device for industrial wastewater treatment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214360702U (en) |
-
2020
- 2020-12-29 CN CN202023268500.3U patent/CN214360702U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN210656493U (en) | Industrial wastewater treatment equipment | |
CN115465967B (en) | Electrolyte treatment device for solar cell | |
CN214360702U (en) | Chemical adding device for industrial wastewater treatment | |
CN219297263U (en) | Biochemical reaction filtering device of biological deodorization filtering pond | |
CN213112801U (en) | Cleaning device suitable for acid industrial waste water | |
CN213803239U (en) | Wastewater treatment device for desulfurization and denitrification | |
CN211813600U (en) | A mechanism of offeing medicine for sewage treatment | |
CN213085653U (en) | Circulating treatment device for harmful substances in aquaculture sewage and sludge herbicide | |
CN211471071U (en) | Inorganic chemical wastewater treatment tank convenient for slag discharge | |
CN214829614U (en) | Industrial wastewater ozone oxidation advanced treatment system | |
CN217888017U (en) | Glue production effluent treatment plant | |
CN214829728U (en) | Advanced oxidation and anaerobic aerobic cutting fluid wastewater treatment device | |
CN213995392U (en) | Waste gas treatment device for coating processing | |
CN216662704U (en) | Waste water treatment equipment for material concentration in production process | |
CN214973973U (en) | Agitating unit is used in processing of PCB chemical liquid medicine | |
CN214990789U (en) | Inorganic experiment waste liquid comprehensive treatment device | |
CN215785481U (en) | Liquid medicine supply device for single-chip wet equipment | |
CN211159224U (en) | Integrated waste water and waste gas treatment equipment | |
CN210261393U (en) | Novel integrated sewage treatment equipment | |
CN212999448U (en) | Agitating unit for chemical production | |
CN218786565U (en) | High concentration organic waste liquid biochemical method clean system | |
CN219991271U (en) | Water treatment medicament mixing arrangement | |
CN210065376U (en) | Chemical wastewater treatment device | |
CN214495956U (en) | Advanced purification device for town sewage | |
CN220003617U (en) | High efficiency batching pond |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |