CN216404165U - Sludge drying processing apparatus for hydraulic engineering - Google Patents

Sludge drying processing apparatus for hydraulic engineering Download PDF

Info

Publication number
CN216404165U
CN216404165U CN202122819700.1U CN202122819700U CN216404165U CN 216404165 U CN216404165 U CN 216404165U CN 202122819700 U CN202122819700 U CN 202122819700U CN 216404165 U CN216404165 U CN 216404165U
Authority
CN
China
Prior art keywords
plate
box
fixedly mounted
sludge
treatment device
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
CN202122819700.1U
Other languages
Chinese (zh)
Inventor
卢振凤
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.)
Guohan Energy And Environmental Protection Engineering Liaoning Co ltd
Original Assignee
Guohan Energy And Environmental Protection Engineering Liaoning 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 Guohan Energy And Environmental Protection Engineering Liaoning Co ltd filed Critical Guohan Energy And Environmental Protection Engineering Liaoning Co ltd
Priority to CN202122819700.1U priority Critical patent/CN216404165U/en
Application granted granted Critical
Publication of CN216404165U publication Critical patent/CN216404165U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Treatment Of Sludge (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The utility model relates to the technical field of sludge treatment equipment and discloses a sludge drying treatment device for hydraulic engineering, wherein the sludge drying treatment device for hydraulic engineering comprises a base, a dewatering box and a drying box are fixedly mounted at the top of the base, the drying box is positioned on one side of the dewatering box, a conveying belt is arranged on the drying box, a feed inlet is mounted at the top of the dewatering box, a rotating motor is fixedly mounted on one side of the dewatering box, a partition plate is fixedly mounted in the dewatering box, a feed outlet is formed in the top of the partition plate, a filter screen is fixedly mounted in the feed outlet, a pressing plate is slidably mounted at the top of the partition plate, a plurality of water outlet holes are formed in one side of the pressing plate, and a sliding seat is slidably mounted at the top of the partition plate. The utility model has reasonable design, can extrude and dewater sludge by the reciprocating movement of the pressing plate, is convenient to clean the conveying belt by the reciprocating movement of the brush plate and prevents the sludge from being adhered to the conveying belt.

Description

Sludge drying processing apparatus for hydraulic engineering
Technical Field
The utility model relates to the technical field of sludge treatment equipment, in particular to a sludge drying treatment device for hydraulic engineering.
Background
In the sewage treatment industry, a lot of excess sludge is generated, and after sludge concentration and sludge dehydration, the sludge still contains very high moisture, generally reaches 80-90% of water content, even exceeds 90%, and the sludge amount is very large. Such sludge still has a space for further treatment, and further moisture removal of sludge can greatly reduce the amount of sludge. The treatment of the sludge is mainly completed by a sludge drying treatment device.
At present, sludge drying treatment device for hydraulic engineering is troublesome in sludge drainage, dried sludge is easily adhered to a conveying belt, the sludge is troublesome to clean, and the conveying of the conveying belt to the sludge is influenced, so that the sludge drying treatment device for hydraulic engineering is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a sludge drying treatment device for hydraulic engineering.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a sludge drying treatment device for hydraulic engineering comprises a base, wherein a dewatering box and a drying box are fixedly mounted at the top of the base, the drying box is positioned on one side of the dewatering box, a conveyor belt is arranged on the drying box, a feed inlet is mounted at the top of the dewatering box, a rotating motor is fixedly mounted at one side of the dewatering box, a partition plate is fixedly mounted in the dewatering box, a discharge hole is formed in the top of the partition plate, a filter screen is fixedly mounted in the discharge hole, a pressing plate is slidably mounted at the top of the partition plate, a plurality of water outlet holes are formed in one side of the pressing plate, a sliding seat is slidably mounted at the top of the partition plate, the top end of the sliding seat is slidably mounted on the inner wall of the top of the dewatering box, two symmetrically arranged push rods are fixedly mounted at one side of the sliding seat, one end of each push rod is fixedly mounted on the pressing plate, a vertical plate is fixedly mounted at the bottom of the partition plate, a transverse plate is fixedly mounted at one side of the vertical plate, a discharge hole is formed in the inner wall of the dewatering box, the discharge port is matched with the conveyor belt, a first rotating rod is fixedly installed on an output shaft of the rotating motor, one end of the first rotating rod extends into the discharge port, a spiral push plate is fixedly installed on the first rotating rod, and a cam is fixedly sleeved on the first rotating rod;
two symmetrically-arranged moving grooves are formed in one side of the vertical plate, moving plates are slidably mounted in the moving grooves, one side, close to each other, of each moving plate is fixedly provided with the same connecting rod, one side of each connecting rod is fixedly provided with a first rack, the cam is matched with the corresponding moving plate, the inner wall of the bottom of the dewatering box is fixedly provided with a fixed spring, the top end of each fixed spring is fixedly mounted on the corresponding moving plate, one side of the vertical plate is rotatably provided with a second rotating rod, one end of each second rotating rod is fixedly provided with a first gear, the first rack is meshed with the first gear, the other end of each second rotating rod extends to the outer side of the dewatering box and is fixedly provided with a second gear, the other side of the dewatering box is fixedly provided with a fixed plate, the top of the fixed plate is slidably provided with a brush plate, the brush plate is matched with the conveyor belt, and the top of the brush plate is fixedly provided with a second rack, the second gear is meshed with the second rack;
fixed mounting has second conical gear on the first bull stick, the top of baffle is rotated and is installed the third bull stick, the bottom fixed mounting of third bull stick has first conical gear, and first conical gear meshes with second conical gear mutually, the top fixed mounting of third bull stick has third conical gear, it installs the pivot to rotate on one side inner wall of dehydration box, the one end fixed mounting of pivot has the rotary rod, one side fixed mounting of rotary rod has the pull rod, the promotion hole has been seted up to one side of sliding seat, pull rod and promotion hole sliding connection, fixed mounting has fourth conical gear in the pivot, and third conical gear meshes with fourth conical gear mutually.
Preferably, a material guide plate is fixedly mounted on the other side of the dewatering box, the material guide plate is located below the discharge port, and the material guide plate is matched with the conveyor belt.
Preferably, a collecting box is placed at the top of the base, and the collecting box is positioned below the brush plate.
Preferably, the top of the fixing plate is provided with a sliding groove, the bottom of the brush plate is fixedly provided with a sliding seat, and the sliding seat is in sliding connection with the corresponding sliding groove.
Preferably, one side of the dewatering box is provided with a drain pipe, and the drain pipe is provided with a guide valve.
Preferably, the other end of the rotating shaft is fixedly provided with a bearing, and the outer ring of the bearing is fixedly arranged on the inner wall of the dewatering box.
Preferably, the inner walls of the two sides of the moving groove are provided with limit grooves, the two sides of the moving plate are fixedly provided with limit seats, and the limit seats are connected with the corresponding limit grooves in a sliding manner.
Compared with the prior art, the utility model provides a sludge drying treatment device for hydraulic engineering, which has the following beneficial effects:
(1) when sludge is added into the dewatering box through the feed inlet, the rotating motor is started at the moment, the rotating motor can rotate through the first rotating rod through the output shaft, the first rotating rod drives the second bevel gear to rotate, the second bevel gear can drive the third rotating rod to rotate through the first bevel gear, the third rotating rod can drive the rotating shaft to rotate through the third bevel gear and the fourth bevel gear, the rotating shaft can drive the rotating rod to rotate, the rotating rod can drive the sliding seat to reciprocate left and right through the pull rod and the pushing hole in a rotating mode, the sliding seat can drive the pressing plate to reciprocate left and right through the push rod, the pressing plate can extrude the sludge, water in the sludge is discharged through the water outlet hole, and the sludge can be drained;
(2) the sludge can fall onto the transverse plate through the feed opening by extrusion of the transverse plate, at the moment, the first rotating rod can drive the spiral push plate to rotate, the rotation of the spiral push plate can push the sludge out of the feed opening, so that the sludge is transmitted to the conveying belt, and the sludge can be moved and dried in the drying box through the conveying belt;
(3) when first bull stick rotated, first bull stick can drive the cam and rotate, the cam can extrude the movable plate downwards, make the movable plate can drive the connecting rod and remove and compress fixed spring, the removal of connecting rod can drive first gear and second bull stick through first rack and rotate, the second bull stick moves the brush board through second gear and second rack, when the cam rotates the round, under fixed spring's elastic force effect, can make the brush board reset, when the continuous rotation of cam, can make the brush board carry out reciprocating motion all around, can be convenient for the conveyer belt clearance, can prevent that mud from adhering on the conveyer belt.
The utility model has reasonable design, can extrude and dewater sludge by the reciprocating movement of the pressing plate, is convenient to clean the conveying belt by the reciprocating movement of the brush plate and prevents the sludge from being adhered to the conveying belt.
Drawings
FIG. 1 is a schematic structural view of a sludge drying treatment device for hydraulic engineering according to the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of a sludge drying treatment device for water conservancy projects according to the present invention;
FIG. 3 is a schematic structural diagram of part A of a sludge drying treatment device for hydraulic engineering according to the present invention;
FIG. 4 is a schematic structural diagram of part B of a sludge drying treatment device for hydraulic engineering according to the present invention;
fig. 5 is a schematic structural diagram of a part C of the sludge drying treatment device for hydraulic engineering provided by the utility model.
In the figure: 1. a base; 2. a dewatering box; 3. a drying box; 4. a conveyor belt; 5. a feed inlet; 6. a rotating electric machine; 7. a partition plate; 8. a feeding port; 9. a filter screen; 10. pressing a plate; 11. a water outlet hole; 12. a sliding seat; 13. a push rod; 14. a vertical plate; 15. a transverse plate; 16. a discharge port; 17. a first rotating lever; 18. a spiral push plate; 19. a cam; 20. a moving groove; 21. moving the plate; 22. a connecting rod; 23. a first rack; 24. fixing the spring; 25. a second rotating rod; 26. a first gear; 27. a fixing plate; 28. a brush plate; 29. a second rack; 30. a second gear; 31. a pull rod; 32. a third rotating rod; 33. a first bevel gear; 34. a second bevel gear; 35. a third bevel gear; 36. a rotating shaft; 37. a fourth bevel gear; 38. rotating the rod; 39. the aperture is pushed.
Detailed Description
Referring to fig. 1-5, a sludge drying treatment device for hydraulic engineering comprises a base 1, a dewatering box 2 and a drying box 3 are fixedly installed at the top of the base 1, the drying box 3 is located at one side of the dewatering box 2, a conveyor belt 4 is arranged on the drying box 3, a feed inlet 5 is installed at the top of the dewatering box 2, a rotating motor 6 is fixedly installed at one side of the dewatering box 2, a partition plate 7 is fixedly installed in the dewatering box 2, a feed outlet 8 is formed at the top of the partition plate 7, a filter screen 9 is fixedly installed in the feed outlet 8, a pressing plate 10 is slidably installed at the top of the partition plate 7, a plurality of water outlet holes 11 are formed at one side of the pressing plate 10, a sliding seat 12 is slidably installed at the top of the partition plate 7, the top end of the sliding seat 12 is slidably installed on the inner wall at the top of the dewatering box 2, two symmetrically arranged push rods 13 are fixedly installed at one side of the sliding seat 12, and one end of the push rod 13 is fixedly installed on the pressing plate 10, a vertical plate 14 is fixedly installed at the bottom of the partition plate 7, a transverse plate 15 is fixedly installed on one side of the vertical plate 14, a discharge port 16 is formed in the inner wall of one side of the dewatering box 2, the discharge port 16 is matched with the conveyor belt 4, a first rotating rod 17 is fixedly installed on an output shaft of the rotating motor 6, one end of the first rotating rod 17 extends into the discharge port 16, a spiral push plate 18 is fixedly installed on the first rotating rod 17, and a cam 19 is fixedly sleeved on the first rotating rod 17;
two symmetrically-arranged moving grooves 20 are formed in one side of a vertical plate 14, moving plates 21 are slidably mounted in the moving grooves 20, one side, close to each other, of each moving plate 21 is fixedly provided with a same connecting rod 22, one side of each connecting rod 22 is fixedly provided with a first rack 23, a cam 19 is matched with the corresponding moving plate 21, a fixed spring 24 is fixedly mounted on the inner wall of the bottom of the dewatering box 2, the top end of the fixed spring 24 is fixedly mounted on the corresponding moving plate 21, one side of the vertical plate 14 is rotatably provided with a second rotating rod 25, one end of the second rotating rod 25 is fixedly provided with a first gear 26, the first rack 23 is meshed with the first gear 26, the other end of the second rotating rod 25 extends to the outer side of the dewatering box 2 and is fixedly provided with a second gear 30, the other side of the dewatering box 2 is fixedly provided with a fixed plate 27, a brush plate 28 is slidably mounted on the top of the fixed plate 27, and the brush plate 28 is matched with the conveyor belt 4, a second rack 29 is fixedly arranged at the top of the brush plate 28, and a second gear 30 is meshed with the second rack 29;
fixed mounting has second conical gear 34 on the first bull stick 17, the top of baffle 7 is rotated and is installed third bull stick 32, the bottom fixed mounting of third bull stick 32 has first conical gear 33, and first conical gear 33 meshes with second conical gear 34 mutually, the top fixed mounting of third bull stick 32 has third conical gear 35, it installs pivot 36 to rotate on the inner wall of one side of dehydration box 2, the one end fixed mounting of pivot 36 has rotary rod 38, one side fixed mounting of rotary rod 38 has pull rod 31, promote hole 39 has been seted up to one side of sliding seat 12, pull rod 31 and promotion hole 39 sliding connection, fixed mounting has fourth conical gear 37 on the pivot 36, and third conical gear 35 meshes with fourth conical gear 37 mutually.
In this embodiment, a material guiding plate is fixedly installed on the other side of the dewatering box 2, the material guiding plate is located below the discharge port 16, and the material guiding plate is matched with the conveyor belt 4.
In this embodiment, a collection box is placed on top of the base 1 and is located below the brush plate 28.
In this embodiment, the top of the fixing plate 27 is provided with a sliding groove, and the bottom of the brush plate 28 is fixedly provided with a sliding seat, and the sliding seat is slidably connected with the corresponding sliding groove.
In this embodiment, the drain pipe has been seted up to one side of dewatering box 2, installs the guide valve on the drain pipe.
In this embodiment, the other end of the rotating shaft 36 is fixedly installed with a bearing, and the outer ring of the bearing is fixedly installed on the inner wall of the dewatering box 2.
In this embodiment, the inner walls of the two sides of the moving slot 20 are both provided with a limiting slot, the two sides of the moving plate 21 are both fixedly provided with a limiting seat, and the limiting seats are slidably connected with the corresponding limiting slots.
The use method of the sludge drying treatment device for the hydraulic engineering comprises the following steps:
s1: when sludge is added into the dewatering box 2 through the feed inlet 5, at the moment, by starting the rotating motor 6, the rotating motor 6 can rotate through the first rotating rod 17 by virtue of the output shaft, the first rotating rod 17 drives the second bevel gear 34 to rotate, the second bevel gear 34 can drive the third rotating rod 32 to rotate through the first bevel gear 33, the third rotating rod 32 can drive the rotating shaft 36 to rotate through the third bevel gear 35 and the fourth bevel gear 37, the rotating shaft 36 can drive the rotating rod 38 to rotate, the rotating rod 38 can drive the sliding seat 12 to reciprocate left and right by virtue of the pull rod 31 and the pushing hole 39 in a rotating manner, the sliding seat 12 can drive the pressing plate 10 to reciprocate left and right by virtue of the push rod 13, the pressing plate 10 can extrude the sludge, so that water in the sludge is discharged through the water outlet 11, and the sludge can be drained;
s2: the sludge can fall onto the transverse plate 15 through the feed opening 8 by the extrusion of the pressing plate 10, at the moment, the first rotating rod 17 can drive the spiral push plate 18 to rotate, the rotation of the spiral push plate 18 can push the sludge out of the feed opening 16, so that the sludge is transmitted to the conveyor belt 4, and the sludge can be moved and dried in the drying box 3 through the conveyor belt 4;
s3: when the first rotating rod 17 rotates, the first rotating rod 17 can drive the cam 19 to rotate, the cam 19 can extrude the moving plate 21 downwards, the moving plate 21 can drive the connecting rod 22 to move and compress the fixing spring 24, the connecting rod 22 can drive the first gear 26 and the second rotating rod 25 to rotate through the first rack 23, the second rotating rod 25 drives the brush plate 28 to move through the second gear 30 and the second rack 29, when the cam 19 rotates for a circle, the brush plate 28 can reset under the elastic action of the fixing spring 24, when the cam 19 rotates continuously, the brush plate 28 can move back and forth, cleaning of the conveyor belt 4 can be facilitated, and sludge can be prevented from being adhered to the conveyor belt 4.

Claims (7)

1. A sludge drying treatment device for hydraulic engineering comprises a base and is characterized in that a dehydration box and a drying box are fixedly mounted at the top of the base, the drying box is positioned on one side of the dehydration box, a conveying belt is arranged on the drying box, a feed inlet is mounted at the top of the dehydration box, a rotating motor is fixedly mounted at one side of the dehydration box, a partition plate is fixedly mounted in the dehydration box, a feed outlet is formed in the top of the partition plate, a filter screen is fixedly mounted in the feed outlet, a pressing plate is slidably mounted at the top of the partition plate, a plurality of water outlet holes are formed in one side of the pressing plate, a sliding seat is slidably mounted at the top of the partition plate, the top end of the sliding seat is slidably mounted on the inner wall of the top of the dehydration box, two symmetrically arranged push rods are fixedly mounted at one side of the sliding seat, one end of each push rod is fixedly mounted on the pressing plate, a vertical plate is fixedly mounted at the bottom of the partition plate, and a transverse plate is fixedly mounted at one side of the vertical plate, a discharge port is formed in the inner wall of one side of the dewatering box and is matched with the conveying belt, a first rotating rod is fixedly mounted on an output shaft of the rotating motor, one end of the first rotating rod extends into the discharge port, a spiral push plate is fixedly mounted on the first rotating rod, and a cam is fixedly sleeved on the first rotating rod;
two symmetrically-arranged moving grooves are formed in one side of the vertical plate, moving plates are slidably mounted in the moving grooves, one side, close to each other, of each moving plate is fixedly provided with the same connecting rod, one side of each connecting rod is fixedly provided with a first rack, the cam is matched with the corresponding moving plate, the inner wall of the bottom of the dewatering box is fixedly provided with a fixed spring, the top end of each fixed spring is fixedly mounted on the corresponding moving plate, one side of the vertical plate is rotatably provided with a second rotating rod, one end of each second rotating rod is fixedly provided with a first gear, the first rack is meshed with the first gear, the other end of each second rotating rod extends to the outer side of the dewatering box and is fixedly provided with a second gear, the other side of the dewatering box is fixedly provided with a fixed plate, the top of the fixed plate is slidably provided with a brush plate, the brush plate is matched with the conveyor belt, and the top of the brush plate is fixedly provided with a second rack, the second gear is meshed with the second rack;
fixed mounting has second conical gear on the first bull stick, the top of baffle is rotated and is installed the third bull stick, the bottom fixed mounting of third bull stick has first conical gear, and first conical gear meshes with second conical gear mutually, the top fixed mounting of third bull stick has third conical gear, it installs the pivot to rotate on one side inner wall of dehydration box, the one end fixed mounting of pivot has the rotary rod, one side fixed mounting of rotary rod has the pull rod, the promotion hole has been seted up to one side of sliding seat, pull rod and promotion hole sliding connection, fixed mounting has fourth conical gear in the pivot, and third conical gear meshes with fourth conical gear mutually.
2. The sludge drying treatment device for the water conservancy project according to claim 1, wherein a material guide plate is fixedly installed at the other side of the dewatering box, the material guide plate is located below the discharge port, and the material guide plate is matched with the conveyor belt.
3. The sludge drying treatment device for the water conservancy project according to claim 1, wherein a collection box is placed on the top of the base, and the collection box is located below the brush plate.
4. The sludge drying treatment device for the water conservancy project according to claim 1, wherein a sliding groove is formed in the top of the fixing plate, a sliding seat is fixedly installed at the bottom of the brush plate, and the sliding seat is in sliding connection with the corresponding sliding groove.
5. The sludge drying treatment device for the water conservancy project according to claim 1, wherein a drain pipe is arranged on one side of the dewatering box, and a guide valve is arranged on the drain pipe.
6. The sludge drying treatment device for the water conservancy project according to claim 1, wherein a bearing is fixedly installed at the other end of the rotating shaft, and an outer ring of the bearing is fixedly installed on the inner wall of the dewatering box.
7. The sludge drying treatment device for the water conservancy project according to claim 1, wherein the inner walls of the two sides of the moving groove are respectively provided with a limiting groove, the two sides of the moving plate are respectively and fixedly provided with a limiting seat, and the limiting seats are in sliding connection with the corresponding limiting grooves.
CN202122819700.1U 2021-11-17 2021-11-17 Sludge drying processing apparatus for hydraulic engineering Active CN216404165U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122819700.1U CN216404165U (en) 2021-11-17 2021-11-17 Sludge drying processing apparatus for hydraulic engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122819700.1U CN216404165U (en) 2021-11-17 2021-11-17 Sludge drying processing apparatus for hydraulic engineering

Publications (1)

Publication Number Publication Date
CN216404165U true CN216404165U (en) 2022-04-29

Family

ID=81300354

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122819700.1U Active CN216404165U (en) 2021-11-17 2021-11-17 Sludge drying processing apparatus for hydraulic engineering

Country Status (1)

Country Link
CN (1) CN216404165U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117142741A (en) * 2023-10-30 2023-12-01 中节能润达(烟台)环保股份有限公司 Sludge drying device convenient to rapid processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117142741A (en) * 2023-10-30 2023-12-01 中节能润达(烟台)环保股份有限公司 Sludge drying device convenient to rapid processing

Similar Documents

Publication Publication Date Title
CN216404165U (en) Sludge drying processing apparatus for hydraulic engineering
CN112010524A (en) Municipal sludge dewatering and recycling device
CN116282763A (en) Domestic sewage purifying treatment device
KR20070038082A (en) A dehydrating method and device for food garbage
CN116785791A (en) Mud-water solid-liquid separation equipment with screening function
CN211514685U (en) Kitchen waste treatment equipment
CN109163511B (en) Plastic particle centrifugal dehydration device
CN116813171A (en) Dewatering treatment device for water supply and drainage sludge
CN217757121U (en) Multifunctional sewage treatment device
CN116603295A (en) Municipal wastewater integrated treatment device
CN211876543U (en) Raw material dehydration device
CN215551143U (en) Domestic kitchen garbage treatment equipment
JP6466366B2 (en) Sludge dewatering device and cleaning method thereof
CN211552372U (en) High-efficient vegetables vibration dehydrator is used in hot pot seasoning production
CN115300972B (en) Food processing wastewater treatment equipment
CN220633273U (en) Screw conveying and squeezing integrated machine for deep dehydration of sludge
CN113370569A (en) Dry-wet separator for kitchen waste
CN215310583U (en) Kitchen waste treatment equipment
CN220119732U (en) Biogas residue dehydrator
CN221235483U (en) Sludge dewatering device
CN219579977U (en) Landfill leachate preprocessing device
CN213266232U (en) Duck manure solid-liquid dry-wet separator
CN218454141U (en) Novel pig raising wastewater treatment equipment
CN220413142U (en) Municipal administration sludge treatment dewatering equipment
CN219615042U (en) Black and odorous water body treatment equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant