CN218813960U - Hydraulic engineering desilting device - Google Patents

Hydraulic engineering desilting device Download PDF

Info

Publication number
CN218813960U
CN218813960U CN202223400254.1U CN202223400254U CN218813960U CN 218813960 U CN218813960 U CN 218813960U CN 202223400254 U CN202223400254 U CN 202223400254U CN 218813960 U CN218813960 U CN 218813960U
Authority
CN
China
Prior art keywords
sewage
hose
board
hydraulic engineering
silt
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
CN202223400254.1U
Other languages
Chinese (zh)
Inventor
郭耀华
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202223400254.1U priority Critical patent/CN218813960U/en
Application granted granted Critical
Publication of CN218813960U publication Critical patent/CN218813960U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Treatment Of Sludge (AREA)

Abstract

The utility model relates to a hydraulic engineering technical field specifically is a hydraulic engineering desilting device. Including the shallow and locate the silt case on the shallow, the upper end of silt case is equipped with the slip track of two relative settings, two common sliding connection has swing joint board between the slip track, the last hydraulic telescoping rod that is equipped with of swing joint board, hydraulic telescoping rod's expansion end is connected with accepts the board, the bottom of accepting the board is equipped with fixed pipe, it is connected with two bull sticks, two to rotate on the board all be equipped with a plurality of stirring rods on the lower extreme circumference outer wall of bull stick, and two it is equipped with the pulley all to overlap on the outer wall of bull stick. The utility model has the advantages that: drive fixed pipe and advance dirty hose through hydraulic telescoping rod and insert the inside silt extraction that carries on of silt to drive two through two bull sticks and mix the pole and smash the silt of caking, avoid silt to block up and advance dirty hose influence desilting efficiency.

Description

Hydraulic engineering desilting device
Technical Field
The utility model relates to a hydraulic engineering technical field specifically is a hydraulic engineering desilting device.
Background
The desilting device who uses among the hydraulic engineering mainly clears up the silt in the river course for deepen the river course, do benefit to drainage, flood discharge, water purification etc. when carrying out the desilting, need insert the inside suction of silt with the suction pipeline.
Through retrieval, according to the dredging device for the hydraulic engineering disclosed by the patent document with the publication number of CN211873125U, the arranged fixing frame enables the dredging device for the hydraulic engineering to be free of manual support of the telescopic pipe by an operator when mud is pumped out, so that the physical strength of the operator is saved, and the problem that the telescopic pipe cannot be properly fixed when the dredging device is used for pumping mud is solved. However, when the device is used, the telescopic pipe is fixed on the fixing frame and cannot be moved, the telescopic pipe can only be fixed at one position for dredging, after sludge near the pipe opening is sucked away, the telescopic pipe cannot go deep into the inside of the sludge for sucking, and some caked sludge easily blocks after entering the telescopic pipe, so that the using effect is affected.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model aims to: the utility model provides a hydraulic engineering desilting device, solve present desilting device and can only fix and carry out the desilting in a department, after near the silt of mouth of pipe was walked by the suction, the inside suction of silt can't be deepened to flexible pipe to the silt of some caking gets into and causes the jam easily behind the flexible pipe, influences the problem of result of use.
For the purpose of realizing above, the utility model discloses a technical scheme: the utility model provides a hydraulic engineering desilting device, includes the shallow and locates the silt case on the shallow, the upper end of silt case is equipped with the slip track of two relative settings, two common sliding connection has swing joint board between the slip track, the last hydraulic telescoping rod that is equipped with of swing joint board, hydraulic telescoping rod's expansion end is connected with accepts the board, the bottom of accepting the board is equipped with fixed pipe, it is connected with two bull sticks, two to rotate on the board to accept all be equipped with a plurality of stirring poles on the lower extreme circumference outer wall of bull stick, and two all the cover is equipped with the pulley on the outer wall of bull stick, two connect through belt transmission between the pulley, it is equipped with the motor on the board to accept, the output of motor is connected with one of them bull stick, the upper end of accepting the board is equipped with the soil pick-up pump, the input of soil pick-up pump is connected with into dirty hose, the one end of advancing dirty hose extends to the inside of fixed pipe and with fixed pipe fixed connection, the bottom of advancing dirty hose is connected with the filter screen, the output of soil pick-up pump is connected with out dirty hose, just the other end of going out dirty hose extends to the inside of silt case.
The utility model has the advantages that: drive fixed pipe and advance dirty hose through hydraulic telescoping rod and insert the inside silt extraction that carries on of silt to drive two through two bull sticks and mix the pole and smash the silt of caking, avoid silt to block up and advance dirty hose influence desilting efficiency.
To facilitate movement of the articulation plate:
as a further improvement of the above technical solution: the outer wall of one side of the movable connecting plate is hinged with a movable rod through a hinged support, and the other end of the movable rod is connected with a positioning plate.
The beneficial effect of this improvement does: the movable rod can be driven to push the movable connecting plate to slide in the two sliding tracks by pushing the positioning plate, so that the sewage suction pump and the sewage inlet hose are driven to move to the upper end of the sludge to be extracted.
For fixing the swing joint plate:
as a further improvement of the above technical solution: a plurality of positioning grooves are formed in the two sliding rails and matched with the positioning plates.
The beneficial effect of this improvement does: the positioning plate is clamped into the positioning groove, and the position of the movable connecting plate is fixed so as to prevent the movable connecting plate from moving randomly when sludge is extracted.
To avoid clogging of the filter screen by weeds in the sludge:
as a further improvement of the above technical solution: one of the stirring rods extends to the bottom of the filter screen.
The beneficial effect of this improvement does: when the rotating rod drives the stirring rod to rotate, weeds below the filter screen are stirred through the stirring rod extending to the bottom of the filter screen, and the weeds are prevented from entering the filter screen to cause blockage.
In order to make the stability of the cart better:
as a further improvement of the above technical solution: all threaded connection has the locating pin in the four corners department of shallow, the bottom of locating pin all is equipped with pricks the nail.
The beneficial effect of this improvement does: the positioning pin is rotated to drive the binding nail to be inserted into the ground, the cart is fixed at a dredging place, and the cart is prevented from moving randomly during dredging operation.
In order to convey the extracted sludge to the outside of the sludge tank:
as a further improvement of the technical scheme: and a sewage discharge connecting pipe is communicated with the side wall of one end, far away from the movable connecting plate, of the sludge box.
The beneficial effect of this improvement does: through being connected play dirty hose and blowdown connecting pipe, can make the silt in the play dirty hose discharge from the blowdown connecting pipe to avoid silt to discharge into in the silt case.
Drawings
Fig. 1 is a schematic isometric view of the present invention;
fig. 2 is a right side view provided by the present invention;
fig. 3 isbase:Sub>A schematic view ofbase:Sub>A three-dimensional cross-sectional structure atbase:Sub>A-base:Sub>A in fig. 2 according to the present invention;
fig. 4 is an enlarged schematic view of a structure in fig. 3 according to the present invention.
In the figure: 1. pushing a cart; 101. a sludge tank; 102. a sliding track; 103. a movable connecting plate; 104. a hydraulic telescopic rod; 105. a bearing plate; 106. a fixed tube; 107. a rotating rod; 108. a stirring rod; 109. a pulley; 110. a belt; 111. a motor; 112. a sewage suction pump; 113. a sewage inlet hose; 114. a filter screen; 115. a sewage discharge hose; 2. hinging seat; 201. a movable rod; 202. positioning a plate; 3. positioning a groove; 4. positioning pins; 401. binding nails; 402. blowdown connecting pipe.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
Example 1:
as shown in fig. 1-4, a hydraulic engineering desilting device, including shallow 1 and locate the silt case 101 on the shallow 1, the upper end of silt case 101 is equipped with the slip track 102 of two relative settings, two common sliding connection has swing joint board 103 between the slip track 102, be equipped with hydraulic telescoping rod 104 on the swing joint board 103, hydraulic telescoping rod 104's expansion end is connected with accepts board 105, the bottom of accepting board 105 is equipped with fixed pipe 106, it is connected with two bull sticks 107, two to rotate on accepting board 105 all be equipped with a plurality of stirring rod 108 on the lower extreme circumference outer wall of bull stick 107, and two all the cover is equipped with pulley 109 on the outer wall of bull stick 107, two connect through belt 110 transmission between the pulley 109, be equipped with motor 111 on accepting board 105, the output of motor 111 is connected with one of them bull stick 107, the upper end of accepting board 105 is equipped with soil pick-up pump 112, the input of soil pick-up pump 112 is connected with into dirty hose 113, the one end that advances dirty hose 113 extends to the inside of fixed pipe 106 and is connected with dirty hose's 115, the other end of dirty hose is connected with sewage pick-up pump 115, the dirty hose's outlet filter screen 115 is connected with the dirty hose 101 and the dirty hose's the other end of silt hose.
Example 2:
as shown in fig. 1-4, as a further optimization of the above embodiment, a hydraulic engineering dredging device includes a cart 1 and a sludge box 101 disposed on the cart 1, the upper end of the sludge box 101 is provided with two sliding rails 102 arranged oppositely, two sliding rails 102 are connected to each other by sliding, a movable connecting plate 103 is connected to each sliding rail 103, a hydraulic telescopic rod 104 is disposed on each movable connecting plate 103, the movable end of the hydraulic telescopic rod 104 is connected to a bearing plate 105, the bottom of the bearing plate 105 is provided with a fixed pipe 106, two rotating rods 107 are rotatably connected to the bearing plate 105, two rotating rods 107 are disposed on the outer wall of the circumference of the lower end of each rotating rod 107 and are provided with a plurality of stirring rods 108, two pulleys 109 are sleeved on the outer wall of each rotating rod 107, two pulleys 109 are connected by a belt 110 in a transmission manner, a motor 111 is disposed on the bearing plate 105, the output end of the motor 111 is connected to one rotating rod 107, the upper end of the bearing plate 105 is provided with a sewage suction pump 112, the input end of the sewage suction pump 112 is connected to a sewage hose 113, one end of the sewage hose 113 is connected to the fixed pipe 106, and the other end of the sewage suction hose 115 is connected to the sewage tank 101, and the sewage outlet of the sewage hose 115 is connected to the sewage hose 115, and the sewage suction hose outlet of the sewage hose 115, and the sewage hose 115 is connected to the sewage hose 115. The outer wall of one side of the movable connecting plate 103 is hinged with a movable rod 201 through a hinge base 2, and the other end of the movable rod 201 is connected with a positioning plate 202.
Example 3:
as shown in fig. 1-4, as a further optimization of the above embodiment, a hydraulic engineering dredging device includes a cart 1 and a sludge box 101 disposed on the cart 1, the upper end of the sludge box 101 is provided with two sliding rails 102 arranged oppositely, two sliding rails 102 are connected to each other by sliding, a movable connecting plate 103 is connected to each sliding rail 103, a hydraulic telescopic rod 104 is disposed on each movable connecting plate 103, the movable end of the hydraulic telescopic rod 104 is connected to a bearing plate 105, the bottom of the bearing plate 105 is provided with a fixed pipe 106, two rotating rods 107 are rotatably connected to the bearing plate 105, two rotating rods 107 are disposed on the outer wall of the circumference of the lower end of each rotating rod 107 and are provided with a plurality of stirring rods 108, two pulleys 109 are sleeved on the outer wall of each rotating rod 107, two pulleys 109 are connected by a belt 110 in a transmission manner, a motor 111 is disposed on the bearing plate 105, the output end of the motor 111 is connected to one rotating rod 107, the upper end of the bearing plate 105 is provided with a sewage suction pump 112, the input end of the sewage suction pump 112 is connected to a sewage hose 113, one end of the sewage hose 113 is connected to the fixed pipe 106, and the other end of the sewage suction hose 115 is connected to the sewage tank 101, and the sewage outlet of the sewage hose 115 is connected to the sewage hose 115, and the sewage suction hose outlet of the sewage hose 115, and the sewage hose 115 is connected to the sewage hose 115. The outer wall of one side of the movable connecting plate 103 is hinged with a movable rod 201 through a hinge base 2, the other end of the movable rod 201 is connected with a positioning plate 202, a plurality of positioning grooves 3 are formed in the two sliding rails 102, and the positioning grooves 3 are matched with the positioning plate 202.
Example 4:
as shown in fig. 1-4, as a further optimization of the above embodiment, a hydraulic engineering dredging device includes a cart 1 and a sludge box 101 disposed on the cart 1, the upper end of the sludge box 101 is provided with two sliding rails 102 arranged oppositely, two sliding rails 102 are connected to each other by sliding, a movable connecting plate 103 is connected to each sliding rail 103, a hydraulic telescopic rod 104 is disposed on each movable connecting plate 103, the movable end of the hydraulic telescopic rod 104 is connected to a bearing plate 105, the bottom of the bearing plate 105 is provided with a fixed pipe 106, two rotating rods 107 are rotatably connected to the bearing plate 105, two rotating rods 107 are disposed on the outer wall of the circumference of the lower end of each rotating rod 107 and are provided with a plurality of stirring rods 108, two pulleys 109 are sleeved on the outer wall of each rotating rod 107, two pulleys 109 are connected by a belt 110 in a transmission manner, a motor 111 is disposed on the bearing plate 105, the output end of the motor 111 is connected to one rotating rod 107, the upper end of the bearing plate 105 is provided with a sewage suction pump 112, the input end of the sewage suction pump 112 is connected to a sewage hose 113, one end of the sewage hose 113 is connected to the fixed pipe 106, and the other end of the sewage suction hose 115 is connected to the sewage tank 101, and the sewage outlet of the sewage hose 115 is connected to the sewage hose 115, and the sewage suction hose outlet of the sewage hose 115, and the sewage hose 115 is connected to the sewage hose 115. One of the agitator rods 108 extends to the bottom of the filter screen 114.
Example 5:
as shown in fig. 1 to 4, as a further optimization of the above embodiment, a hydraulic engineering dredging device includes a cart 1 and a sludge box 101 disposed on the cart 1, the upper end of the sludge box 101 is provided with two sliding rails 102 which are oppositely disposed, two sliding rails 102 are slidably connected to each other to form a movable connection plate 103, the movable connection plate 103 is provided with a hydraulic telescopic rod 104, the movable end of the hydraulic telescopic rod 104 is connected to a receiving plate 105, the bottom of the receiving plate 105 is provided with a fixing tube 106, the receiving plate 105 is rotatably connected to two rotating rods 107, two rotating rods 107 are provided on the outer wall of the circumference of the lower end of each rotating rod 107 and are provided with a plurality of stirring rods 108, two rotating rods 107 are provided with pulleys 109 on the outer wall, the two pulleys 109 are connected to each other through a belt 110 in a transmission manner, the receiving plate 105 is provided with a motor 111, the output end of the motor 111 is connected to one of the rotating rods 107, the upper end of the receiving plate 105 is provided with a sewage suction pump 112, the input end of the sewage pump 112 is connected to a sewage inlet hose 113, one end of the sewage hose 113 extends to the inside of the fixing tube 106 and is connected to the bottom end of the fixing tube 106, the sewage box 112 is connected to the sewage pump 112, and the outlet of the sewage hose 115 is connected to the sewage tank 101, and the sewage hose outlet of the sewage hose 115. All threaded connection has locating pin 4 in shallow 1's four corners department, the bottom of locating pin 4 all is equipped with pricks nail 401.
Example 6:
as shown in fig. 1-4, as a further optimization of the above embodiment, a hydraulic engineering dredging device includes a cart 1 and a sludge box 101 disposed on the cart 1, the upper end of the sludge box 101 is provided with two sliding rails 102 arranged oppositely, two sliding rails 102 are connected to each other by sliding, a movable connecting plate 103 is connected to each sliding rail 103, a hydraulic telescopic rod 104 is disposed on each movable connecting plate 103, the movable end of the hydraulic telescopic rod 104 is connected to a bearing plate 105, the bottom of the bearing plate 105 is provided with a fixed pipe 106, two rotating rods 107 are rotatably connected to the bearing plate 105, two rotating rods 107 are disposed on the outer wall of the circumference of the lower end of each rotating rod 107 and are provided with a plurality of stirring rods 108, two pulleys 109 are sleeved on the outer wall of each rotating rod 107, two pulleys 109 are connected by a belt 110 in a transmission manner, a motor 111 is disposed on the bearing plate 105, the output end of the motor 111 is connected to one rotating rod 107, the upper end of the bearing plate 105 is provided with a sewage suction pump 112, the input end of the sewage suction pump 112 is connected to a sewage hose 113, one end of the sewage hose 113 is connected to the fixed pipe 106, and the other end of the sewage suction hose 115 is connected to the sewage tank 101, and the sewage outlet of the sewage hose 115 is connected to the sewage hose 115, and the sewage suction hose outlet of the sewage hose 115, and the sewage hose 115 is connected to the sewage hose 115. A sewage draining connecting pipe 402 is communicated with the side wall of one end of the sludge box 101, which is far away from the movable connecting plate 103.
The utility model discloses a theory of operation does: during sludge cleaning, firstly, the sludge box 101 is moved to a specified place through the cart 1, then the positioning pin 4 is rotated to enable the positioning pin 4 to drive the binding nail 401 to be bound into the ground, the cart 1 is fixed, then the positioning plate 202 is taken out from the positioning groove 3, the movable connecting plate 103 is pushed to move in the sliding track 102 through the movable rod 201, the bottom end of the sludge inlet hose 113 is enabled to be opposite to the upper end of sludge to be extracted, the positioning plate 202 is clamped into the positioning groove 3 to fix the movable connecting plate 103, then the hydraulic telescopic rod 104 is started to drive the bearing plate 105 to move downwards, the fixed pipe 106 drives the sludge inlet hose 113 to enter the sludge, the sludge suction pump 112 is started to extract sludge, meanwhile, the motor 111 drives one of the rotary rods 107 to rotate, the other rotary rod 107 is driven to rotate through the belt 110, the two stirring rods 108 are enabled to scatter the agglomerated sludge, meanwhile, weeds and the like at the lower end of the filter screen 114 are stirred and cleaned through one of the longer stirring rod 108, the filter screen 114 is prevented from being blocked, and the sludge can be discharged through the sludge inlet hose 101 and the sludge outlet of the sludge connecting pipe 402, and the sludge can be directly discharged through the sludge discharging hose, and the sludge connecting pipe 402, and the sludge can be directly discharged through the sludge discharging hose 101.
It should be noted that, in this document, 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.
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing are only preferred embodiments of the present invention, and it should be noted that there are practically unlimited specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the technical features described above can also be combined in a suitable manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims (6)

1. The utility model provides a hydraulic engineering sediment removal device, includes shallow (1) and locates silt case (101) on shallow (1), its characterized in that: the upper end of silt case (101) is equipped with two relative slip tracks (102) that set up, two common sliding connection has swing joint board (103) between slip track (102), be equipped with hydraulic telescoping rod (104) on swing joint board (103), the expansion end of hydraulic telescoping rod (104) is connected with accepts board (105), the bottom of accepting board (105) is equipped with solid fixed tube (106), it has two bull stick (107) to rotate on accepting board (105), two all be equipped with a plurality of stirring pole (108) on the lower extreme circumference outer wall of bull stick (107), and two all overlap on the outer wall of bull stick (107) and be equipped with pulley (109), two connect through belt (110) transmission between pulley (109), be equipped with motor (111) on accepting board (105), the output of motor (111) is connected with one of them bull stick (107), the upper end of accepting board (105) is equipped with sewage suction pump (112), the input of sewage suction pump (112) is connected with sewage inlet hose (113), the one end of sewage inlet hose (113) extends to solid fixed tube (106) and the solid fixed tube (106) and is connected with sewage suction pump (114), sewage suction hose (112) outlet hose (114), and the other end of the sewage discharge hose (115) extends to the inside of the sludge tank (101).
2. The hydraulic engineering desilting device of claim 1, characterized in that: the outer wall of one side of the movable connecting plate (103) is hinged with a movable rod (201) through a hinged support (2), and the other end of the movable rod (201) is connected with a positioning plate (202).
3. A hydraulic engineering dredging device according to claim 2, characterized in that: a plurality of positioning grooves (3) are formed in the two sliding tracks (102), and the positioning grooves (3) are matched with the positioning plate (202).
4. The hydraulic engineering desilting device of claim 1, characterized in that: one of the stirring rods (108) extends to the bottom of the filter screen (114).
5. The hydraulic engineering desilting device of claim 1, characterized in that: the four corners of the cart (1) are connected with positioning pins (4) in a threaded mode, and the bottoms of the positioning pins (4) are provided with binding nails (401).
6. The hydraulic engineering desilting device of claim 1, characterized in that: and a sewage discharge connecting pipe (402) is communicated with the side wall of one end of the sludge box (101) far away from the movable connecting plate (103).
CN202223400254.1U 2022-12-19 2022-12-19 Hydraulic engineering desilting device Active CN218813960U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202223400254.1U CN218813960U (en) 2022-12-19 2022-12-19 Hydraulic engineering desilting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202223400254.1U CN218813960U (en) 2022-12-19 2022-12-19 Hydraulic engineering desilting device

Publications (1)

Publication Number Publication Date
CN218813960U true CN218813960U (en) 2023-04-07

Family

ID=87261966

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202223400254.1U Active CN218813960U (en) 2022-12-19 2022-12-19 Hydraulic engineering desilting device

Country Status (1)

Country Link
CN (1) CN218813960U (en)

Similar Documents

Publication Publication Date Title
CN210385031U (en) Drainage extraction prefiltering structure for water supply and drainage engineering
CN108978692A (en) Water drainage of deep foundation pit system
CN218813960U (en) Hydraulic engineering desilting device
CN107500505B (en) High efficiency river mud collection processing apparatus
CN1141489C (en) Directly sucking and reversely circular bottom slag-removing method and equipment before filling concrete for drilling cast-in-situ pile
CN218030114U (en) Device for removing pile hole sediment of cast-in-place pile
CN217870662U (en) Drainage desilting device for road construction
CN212506531U (en) Underground long shaft pump station
CN212427305U (en) Silt excavating gear
CN112913760A (en) Ditch water supply and drainage device for loach cultivation in rice field and working method of ditch water supply and drainage device
CN212294807U (en) Dredging device for hydraulic engineering
CN112081181A (en) Underground long shaft pump station
CN220184240U (en) Clear device of drawing of inspection shaft mud
US2916091A (en) Drilled well cleaning device
CN114150675B (en) Adjustable supporting equipment with edge collapse preventing function for geotechnical engineering
CN214329043U (en) High-efficient hydraulic engineering desilting device
CN215715630U (en) Water gaging weir groove sediment removal device
CN116119789B (en) Foundation pit precipitation and precipitation collection device and method based on green construction
CN215670034U (en) Hydraulic engineering water supply and drainage pipeline inner wall desilting device
CN116651077A (en) Engineering dregs mud recycles water trap
CN220644382U (en) Desilting device for hydraulic construction engineering
CN215948315U (en) Dredging device for hydraulic engineering
CN219604356U (en) Building pile drilling sediment processing apparatus
CN217811504U (en) Leakage-proof device for waterproof engineering
CN219672155U (en) Concrete pouring equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant