CN219297239U - Mobile equipment for sewage treatment and recycling - Google Patents
Mobile equipment for sewage treatment and recycling Download PDFInfo
- Publication number
- CN219297239U CN219297239U CN202222259193.5U CN202222259193U CN219297239U CN 219297239 U CN219297239 U CN 219297239U CN 202222259193 U CN202222259193 U CN 202222259193U CN 219297239 U CN219297239 U CN 219297239U
- Authority
- CN
- China
- Prior art keywords
- filter
- filter pressing
- sleeve
- equipment box
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model discloses mobile equipment for sewage treatment and recycling, which comprises an equipment box, a filter pressing assembly and a mobile assembly, wherein the equipment box is connected with the filter pressing assembly; the equipment box is provided with a water inlet joint and a water outlet pipe, a coarse filter frame and a collecting sleeve are arranged in the water inlet joint, and the lower end of the equipment box is provided with a mounting sleeve; the filter pressing assembly comprises a filter pressing cylinder, a speed reducing motor and a filter pressing plate, the filter pressing cylinder is arranged in the equipment box through a limiting plate, and the filter pressing cylinder is provided with a dosing pipe and a connecting pipe; the limiting plate is provided with filter cloth, the filter pressing plate is clamped inside the filter pressing cylinder, the filter pressing plate is provided with a filter pressing screw rod, and the reducing motor is arranged on the outer wall of the equipment box and provides power for the filter pressing screw rod; the movable assembly comprises a movable frame clamped in the mounting sleeve and a movable roller arranged on the lower bottom surface of the movable frame; the utility model has reasonable structural design, stable and reliable sewage treatment effect and is suitable for popularization and use.
Description
Technical Field
The utility model relates to the technical field of sewage purification, in particular to mobile equipment for sewage treatment and recycling.
Background
The water is the source of human life, the living cost is the source of the life of people, along with the improvement of the living standard of people, livestock and poultry breeding industries, such as breeding of poultry chickens, ducks and geese, breeding of cattle, pigs, sheep and the like, are rapidly developed, and the sewage generated by the poultry breeding farms is more and more generated, if the sewage is directly discharged without treatment, the surface water body is seriously polluted, the eutrophication of the water body is caused, and the soil, the groundwater and the farmland ecological system are damaged. In addition, under the anaerobic condition, the cultivation wastewater can generate a large amount of malodorous gas, which endangers the health of surrounding residents.
The sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrochemical industry, environmental protection, urban landscapes, medical treatment, catering and the like, and the sewage treatment is increasingly carried into daily life of common people, and upstream suppliers in the sewage treatment industry mainly comprise manufacturers of sewage treatment equipment and sewage treatment medicament suppliers, and belong to industries with faster development and good demand conditions.
However, the existing sewage treatment devices are large equipment and are difficult to move, and the treatment process is long in time consumption and high in treatment cost.
Disclosure of Invention
Aiming at the technical problems, the utility model provides mobile equipment for sewage treatment and recycling.
The technical scheme of the utility model is as follows: a mobile device for sewage treatment and regeneration and utilization thereof comprises a device box, a filter pressing assembly and a mobile assembly; the top end of the equipment box is provided with a water inlet joint, a rough filtering frame penetrating through the equipment box is movably clamped in the water inlet joint, a collecting sleeve fixedly connected with the inner top of the equipment box is sleeved outside the rough filtering frame, the lower end of the side wall of the equipment box is provided with a drain pipe, and the lower end of the equipment box is provided with a mounting sleeve;
the filter pressing assembly comprises a filter pressing cylinder, a speed reducing motor and a filter pressing plate, the filter pressing cylinder is arranged in the equipment box through a limiting plate, a dosing pipe penetrating through the equipment box and a connecting pipe communicated with the collecting sleeve are arranged on the filter pressing cylinder, and a check valve is arranged at the joint of the filter pressing cylinder and the connecting pipe; the filter cloth is arranged at the position of the limiting plate, which corresponds to the position of the filter pressing cylinder, the filter pressing plate is in sliding clamping connection with the inside of the filter pressing cylinder, a filter pressing screw which sequentially penetrates through the filter pressing plate and the filter cloth and is in rotating clamping connection with the inner bottom of the equipment box is connected with the filter pressing plate in a threaded connection manner, the top end of the filter pressing screw is sleeved with a connecting belt wheel, a gear motor is arranged on the outer wall of the equipment box through a motor box, a main belt wheel is arranged on an output shaft of the gear motor, and a driving belt which penetrates through the equipment box and is connected with the connecting belt wheel is arranged on the main belt wheel;
the movable assembly comprises a movable frame movably clamped in the mounting sleeve and a plurality of movable rollers arranged at the end part of the lower bottom surface of the movable frame.
Further, a sliding column fixedly connected with the inner top of the mounting sleeve is connected to the moving frame in a sliding manner, an extrusion roller is arranged on the moving frame, a rotary extrusion sleeve positioned at the upper end of the moving frame is sleeved on the sliding column, an arc-shaped groove which is connected with the extrusion roller in a sliding manner is arranged on the rotary extrusion sleeve, an operating rod penetrating through the equipment box is arranged on the side wall of the rotary extrusion sleeve, a fastening nut is connected to the operating rod in a threaded manner, a swinging groove which provides a moving space for the operating rod is arranged on the side wall of the equipment box, and when the rotary extrusion sleeve is used, the rotary extrusion sleeve is made to rotate on the sliding column through the movement of the rotary extrusion sleeve in the swinging groove, the arc-shaped groove on the rotary extrusion sleeve is used for pushing the moving frame to move downwards along the sliding column, and finally the moving roller is made to contact with the ground, so that the use flexibility of the rotary extrusion sleeve disclosed by the utility model is improved.
Further, the damping rings are arranged at the bottom ends of the mounting sleeves, vibration generated when the equipment runs is reduced through the damping rings, and therefore stability of the equipment is improved when the equipment runs.
Further, the filter pressing plate is connected with the filter pressing screw rod through a thread bush, a plurality of conversion tooth grooves are formed in the joint of the filter pressing plate and the thread bush, clamping teeth are rotatably clamped at the positions, corresponding to the positions of the conversion tooth grooves, of the thread bush in the circumferential direction, and reset torsion springs are arranged at the joints of the clamping teeth and the thread bush; the inside stirring subassembly that is provided with the cover and establishes on the filter-pressing lead screw of pressure section of thick bamboo, stirring subassembly includes several stirring ring and several compression spring that sets up between two adjacent stirring rings, be located the stirring ring and filter-pressing lead screw fixed connection of pressure section of thick bamboo lower extreme, all other each stirring rings all slide the joint with the filter-pressing lead screw, when gear motor counter-rotating, conversion tooth groove breaks away from with the latch, gear motor drives stirring subassembly rotation, thereby make medicine and flocculating agent intensive mixing, improve the flocculation effect of pollutant in the sewage, when gear motor counter-rotating, conversion tooth groove and latch joint, the filter-pressing board moves down along the filter-pressing section of thick bamboo under the effect of filter-pressing lead screw, carry out filter-pressing to sewage and each stirring ring is close to each other.
Further, a reinforcing sleeve fixedly connected with the inner wall of the equipment box is fixedly sleeved on the side wall of the filter pressing cylinder, the limiting plate is in sliding clamping connection with the filter pressing cylinder, threaded seats penetrating through the equipment box are arranged at two ends of the side wall of the limiting plate, a lifting groove for providing a moving space for the threaded seats is arranged on the equipment box, and lifting screws rotationally clamped with the outer wall of the equipment box are connected to the two threaded seats in a threaded manner; utilize promotion screw rod promotion screw thread seat to remove at the promote groove to make limiting plate breaks away from with the filter-pressing section of thick bamboo, be convenient for clear up the pollutant of filter-pressing section of thick bamboo inside deposit, guaranteed the high-efficient operation of equipment.
Further, the pushing handle is arranged on the side wall of the equipment box, equipment can be conveniently transferred by using the pushing handle, and portability of the equipment is improved.
The application method of the utility model comprises the following steps:
s1, moving equipment to a to-be-treated site through a moving roller, connecting a speed reducing motor with an external power supply, and then enabling sewage to pass through a coarse filtration frame through a water inlet joint;
s2, sewage entering the coarse filter frame is filtered primarily and then enters the collecting sleeve, then enters the filter pressing cylinder through the connecting pipe, and a commercial flocculant such as polyaluminium sulfate is injected into the filter pressing cylinder through the dosing pipe;
s3, starting a gear motor, driving a filter pressing screw rod to rotate by using the gear motor, so that a filter pressing plate moves downwards along a filter pressing barrel under the action of the filter pressing screw rod, and secondarily filtering flocculates in sewage by using filter cloth;
s4, discharging the sewage after the filter pressing treatment out of the equipment box through a drain pipe for secondary utilization, and cleaning the coarse filter frame and the pollutants on the filter cloth on the machine regularly.
Compared with the prior art, the utility model has the beneficial effects that:
firstly, the utility model has reasonable structural design, and the sewage can be reused after impurities in the sewage are completely removed by carrying out primary filtration, flocculation sedimentation and secondary pressure filtration treatment, so that the living environment of people is greatly improved, and the problem of environmental pollution caused by random sewage discharge is solved;
the integrated mobile treatment equipment has the advantages of flexible movement and strong practicability, and effectively obtains the results of on-site water taking, on-site treatment and on-site recycling;
thirdly, the movable assembly can be stored in the installation sleeve in an unused state, is novel in structure, and effectively improves the stability and reliability of the equipment in operation.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a left side view of the present utility model;
FIG. 4 is a schematic illustration of the connection pulley to the press feed screw of the present utility model;
FIG. 5 is a schematic illustration of the connection of the mobile frame to the mounting sleeve of the present utility model;
FIG. 6 is a schematic illustration of the connection of a rotary extrusion sleeve to a sliding column of the present utility model;
the device comprises a 1-device box, a 10-water inlet connector, a 11-coarse filter frame, a 12-collecting sleeve, a 13-mounting sleeve, a 130-damping ring, a 14-swinging groove, a 15-lifting groove, a 16-pushing handle, a 2-filter pressing assembly, a 20-filter pressing cylinder, a 200-limiting plate, a 201-filter cloth, a 202-thread seat, a 203-lifting screw rod, a 21-gear motor, a 210-motor box, a 211-main belt pulley, a 22-filter pressing plate, a 220-thread sleeve, a 221-conversion tooth socket, a 222-clamping tooth, a 23-dosing pipe, a 24-connecting pipe, a 25-filter pressing screw rod, a 250-connecting belt pulley, a 26-stirring assembly, a 260-stirring ring, 261-compression spring, a 27-reinforcing sleeve, a 3-moving assembly, a 30-moving frame, a 300-pressing roller, a 31-moving roller, a 32-sliding column, a 33-rotating pressing sleeve, a 330-arc groove, a 34-operating rod and a 4-drain pipe.
Detailed Description
Example 1
A mobile device for sewage treatment and recycling thereof as shown in fig. 1 and 5 comprises a device box 1, a filter pressing assembly 2 and a mobile assembly 3; the top end of the equipment box 1 is provided with a water inlet joint 10, a rough filtration frame 11 penetrating through the equipment box 1 is movably clamped in the water inlet joint 10, a collecting sleeve 12 fixedly connected with the inner top of the equipment box 1 is sleeved outside the rough filtration frame 11, the lower end of the side wall of the equipment box 1 is provided with a drain pipe 4, and the lower end of the equipment box 1 is provided with a mounting sleeve 13; the bottom end of the mounting sleeve 13 is provided with a damping ring 130; a pushing handle 16 is arranged on the side wall of the equipment box 1;
as shown in fig. 1 and 2, the filter pressing assembly 2 comprises a filter pressing cylinder 20, a gear motor 21 and a filter pressing plate 22, wherein the filter pressing cylinder 20 is arranged inside the equipment box 1 through a limiting plate 200, a dosing pipe 23 penetrating through the equipment box 1 and a connecting pipe 24 communicated with the collecting sleeve 12 are arranged on the filter pressing cylinder 20, and a check valve is arranged at the joint of the filter pressing cylinder 20 and the connecting pipe 24; the filter cloth 201 is arranged at the position of the limiting plate 200 corresponding to the filter pressing cylinder 20, the filter pressing plate 22 is in sliding clamping connection with the filter pressing cylinder 20, the filter pressing plate 22 is in threaded connection with the filter pressing screw 25 which sequentially penetrates through the filter pressing plate 22 and the filter cloth 201 and is in rotating clamping connection with the inner bottom of the equipment box 1, the top end of the filter pressing screw 25 is sleeved with the connecting belt wheel 250, the gear motor 21 is arranged on the outer wall of the equipment box 1 through the motor box 210, the main belt wheel 211 is arranged on the output shaft of the gear motor 21, and the main belt wheel 211 is provided with a driving belt which penetrates through the equipment box 1 and is connected with the connecting belt wheel 250;
as shown in fig. 1 and 5, the moving assembly 3 includes a moving frame 30 movably clamped inside the mounting sleeve 13 and 4 moving rollers 31 disposed at the lower bottom end of the moving frame 30.
Example 2
This embodiment differs from embodiment 1 in that:
as shown in fig. 1, 3 and 6, a sliding column 32 fixedly connected with the inner top of the mounting sleeve 13 is slidably clamped on the moving frame 30, an extrusion roller 300 is arranged on the moving frame 30, a rotary extrusion sleeve 33 positioned at the upper end of the moving frame 30 is sleeved on the sliding column 32, an arc-shaped groove 330 slidably clamped with the extrusion roller 300 is arranged on the rotary extrusion sleeve 33, an operating rod 34 penetrating through the equipment box 1 is arranged on the side wall of the rotary extrusion sleeve 33, a fastening nut is connected to the operating rod 34 in a threaded manner, and a swinging groove 14 providing a moving space for the operating rod 34 is arranged on the side wall of the equipment box 1.
Example 3
As shown in fig. 1 and 4, the filter press plate 22 is connected with a filter press screw 25 through a thread sleeve 220, 4 conversion tooth grooves 221 are formed at the joint of the filter press plate 22 and the thread sleeve 220, clamping teeth 222 are rotationally clamped at the positions corresponding to the positions of the conversion tooth grooves 221 in the circumferential direction of the thread sleeve 220, and reset torsion springs are arranged at the joints of the clamping teeth 222 and the thread sleeve 220; the inside stirring subassembly 26 that overlaps on filter-pressing lead screw 25 that is provided with of pressure filter cartridge 20, stirring subassembly 26 include 4 stirring rings 260 and two-to-one compression spring 261 that set up between two adjacent stirring rings 260, lie in the stirring ring 260 and filter-pressing lead screw 25 fixed connection of pressure filter cartridge 20 bottommost, all other each stirring rings 260 all with filter-pressing lead screw 25 slip joint.
Example 4
As shown in fig. 2 and 3, a reinforcing sleeve 27 fixedly connected with the inner wall of the equipment box 1 is fixedly sleeved on the side wall of the filter pressing cylinder 20, a limiting plate 200 is in sliding clamping connection with the filter pressing cylinder 20, threaded seats 202 penetrating through the equipment box 1 are arranged at two ends of the side wall of the limiting plate 200, a lifting groove 15 for providing a moving space for the threaded seats 202 is arranged on the equipment box 1, and lifting screws 203 rotationally clamped with the outer wall of the equipment box 1 are connected to the two threaded seats 202 in a threaded manner.
Claims (6)
1. The mobile equipment for sewage treatment and recycling is characterized by comprising an equipment box (1), a filter pressing assembly (2) and a mobile assembly (3); the device comprises a device box (1), and is characterized in that a water inlet connector (10) is arranged at the top end of the device box (1), a rough filtering frame (11) penetrating through the device box (1) is movably clamped in the water inlet connector (10), a collecting sleeve (12) fixedly connected with the inner top of the device box (1) is sleeved outside the rough filtering frame (11), a drain pipe (4) is arranged at the lower end of the side wall of the device box (1), and a mounting sleeve (13) is arranged at the lower end of the device box (1);
the filter pressing assembly (2) comprises a filter pressing cylinder (20), a speed reducing motor (21) and a filter pressing plate (22), wherein the filter pressing cylinder (20) is arranged inside the equipment box (1) through a limiting plate (200), a dosing pipe (23) penetrating through the equipment box (1) and a connecting pipe (24) communicated with the collecting sleeve (12) are arranged on the filter pressing cylinder (20), and a check valve is arranged at the joint of the filter pressing cylinder (20) and the connecting pipe (24); the filter press comprises a filter press cylinder (20), a limiting plate (200), a filter cloth (201) and a main belt wheel (211) arranged on the outer wall of the filter press cylinder (20), wherein the filter press plate (22) is in sliding clamping connection with the filter press cylinder (20), a filter press screw (25) which sequentially penetrates through the filter press plate (22) and the filter cloth (201) and is in rotating clamping connection with the bottom in a device box (1) is connected to the filter press plate (22) in a threaded manner, a connecting belt wheel (250) is sleeved on the top end of the filter press screw (25), a speed reducing motor (21) is arranged on the outer wall of the device box (1) through a motor box (210), and a main belt wheel (211) is arranged on an output shaft of the speed reducing motor (21), and a driving belt which penetrates through the device box (1) and is connected with the connecting belt wheel (250) is arranged on the main belt wheel (211);
the movable assembly (3) comprises a movable frame (30) movably clamped in the mounting sleeve (13) and a plurality of movable rollers (31) arranged at the end part of the lower bottom surface of the movable frame (30).
2. The mobile device for sewage treatment and recycling thereof according to claim 1, wherein a sliding column (32) fixedly connected with the inner top of the installation sleeve (13) is connected to the moving frame (30) in a sliding manner, an extrusion roller (300) is arranged on the moving frame (30), a rotary extrusion sleeve (33) positioned at the upper end of the moving frame (30) is sleeved on the sliding column (32), an arc-shaped groove (330) in sliding connection with the extrusion roller (300) is arranged on the rotary extrusion sleeve (33), a control rod (34) penetrating through the device box (1) is arranged on the side wall of the rotary extrusion sleeve (33), a fastening nut is connected to the control rod (34) in a threaded manner, and a swinging groove (14) for providing a moving space for the control rod (34) is arranged on the side wall of the device box (1).
3. A mobile device for sewage treatment and its recycling according to claim 2, characterized in that the bottom end of the mounting sleeve (13) is provided with a damping ring (130).
4. The mobile device for sewage treatment and recycling according to claim 1, wherein the filter pressing plate (22) is connected with a filter pressing screw rod (25) through a threaded sleeve (220), a plurality of conversion tooth grooves (221) are formed at the connection position of the filter pressing plate (22) and the threaded sleeve (220), clamping teeth (222) are rotatably clamped at the positions, corresponding to the positions of the conversion tooth grooves (221), of the threaded sleeve (220), and reset torsion springs are arranged at the connection positions of the clamping teeth (222) and the threaded sleeve (220); the filter-pressing section of thick bamboo (20) is inside to be provided with the stirring subassembly (26) of cover on filter-pressing lead screw (25), stirring subassembly (26) are including several stirring ring (260) and several compression spring (261) that set up between two adjacent stirring rings (260), are located stirring ring (260) and filter-pressing lead screw (25) fixed connection of filter-pressing section of thick bamboo (20) lower extreme, and all the other each stirring rings (260) all with filter-pressing lead screw (25) slip joint.
5. The mobile equipment for sewage treatment and recycling thereof according to claim 1, wherein a reinforcing sleeve (27) fixedly connected with the inner wall of the equipment box (1) is fixedly sleeved on the side wall of the filter pressing cylinder (20), the limiting plate (200) is in sliding clamping connection with the filter pressing cylinder (20), threaded seats (202) penetrating through the equipment box (1) are arranged at two ends of the side wall of the limiting plate (200), lifting grooves (15) for providing a moving space for the threaded seats (202) are arranged on the equipment box (1), and lifting screws (203) in rotating clamping connection with the outer wall of the equipment box (1) are connected to the threaded seats (202) in a threaded mode.
6. A mobile device for sewage treatment and its recycling according to claim 1, characterized in that the side wall of the device box (1) is provided with pushing handles (16).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222259193.5U CN219297239U (en) | 2022-08-26 | 2022-08-26 | Mobile equipment for sewage treatment and recycling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222259193.5U CN219297239U (en) | 2022-08-26 | 2022-08-26 | Mobile equipment for sewage treatment and recycling |
Publications (1)
Publication Number | Publication Date |
---|---|
CN219297239U true CN219297239U (en) | 2023-07-04 |
Family
ID=86952005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202222259193.5U Active CN219297239U (en) | 2022-08-26 | 2022-08-26 | Mobile equipment for sewage treatment and recycling |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN219297239U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118108390A (en) * | 2024-04-23 | 2024-05-31 | 生态环境部南京环境科学研究所 | Sludge treatment device and method for ecologically treating plain river network area |
-
2022
- 2022-08-26 CN CN202222259193.5U patent/CN219297239U/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118108390A (en) * | 2024-04-23 | 2024-05-31 | 生态环境部南京环境科学研究所 | Sludge treatment device and method for ecologically treating plain river network area |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN219297239U (en) | Mobile equipment for sewage treatment and recycling | |
CN210114872U (en) | A sewage filter equipment for among environmental protection engineering | |
CN219950753U (en) | Sewage treatment system | |
CN109956533A (en) | A kind of environment protection sewage purification device | |
CN213294956U (en) | Factory wastewater and sewage treatment device | |
CN212403739U (en) | Sewage treatment device convenient to clearance filter screen board | |
CN212293204U (en) | Vertical micro-power self-circulation efficient sewage treatment equipment | |
CN208345951U (en) | A kind of electric flocculation heavy metal wastewater treatment apparatus | |
CN209636073U (en) | A kind of Hospital Sewage Treatment reclaimer | |
CN221141409U (en) | Sewage treatment device for environmental treatment | |
CN113003782A (en) | Efficient sewage separation system and use method thereof | |
CN202465330U (en) | Activated coke extracting and backwashing device for advanced wastewater treatment | |
CN219156722U (en) | Integrated sewage treatment equipment | |
CN206799376U (en) | A kind of energy-conserving and environment-protective apparatus for treating sewage | |
CN109748467A (en) | A kind of Hospital Sewage Treatment reclaimer with efficient sterilization function | |
CN219010106U (en) | Integrated distributed efficient dephosphorization agent sewage treatment device | |
CN220642802U (en) | Industrial water circulation control device | |
CN219194712U (en) | Aerobic section aeration device for sewage treatment | |
CN221440459U (en) | Circulation water utilization system for cleaning operation | |
CN220335010U (en) | Papermaking wastewater purification device | |
CN220812096U (en) | Water resource sewage treatment device | |
CN221275262U (en) | Waste water cyclic utilization device | |
CN220530810U (en) | Industrial sewage treatment device | |
CN218145893U (en) | Integrated sewage treatment device | |
CN214714971U (en) | Environment-friendly sewage purification device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |