CN111921255A - Sewage multi-time filtering device - Google Patents
Sewage multi-time filtering device Download PDFInfo
- Publication number
- CN111921255A CN111921255A CN202010839582.8A CN202010839582A CN111921255A CN 111921255 A CN111921255 A CN 111921255A CN 202010839582 A CN202010839582 A CN 202010839582A CN 111921255 A CN111921255 A CN 111921255A
- Authority
- CN
- China
- Prior art keywords
- water
- filter
- filter cartridge
- sewage
- cartridge
- 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.)
- Granted
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 35
- 238000001914 filtration Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000003860 storage Methods 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 5
- 230000003028 elevating effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
Abstract
The invention relates to a sewage multi-time filtering device, which stores sewage by arranging a water storage device, selectively filters the sewage twice by arranging two filter cartridges inside and outside, scatters the sewage on a filter hole I by arranging scattering blades, and can lift the sewage which is not scattered on the filter hole I to the filter hole I for filtering by selectively lifting a water lifting device through a clamping device, so that the situation that the sewage is too late for filtering because the water falls down is prevented, and a bearing plate is arranged in a filter cartridge II for lifting to select whether the sewage is secondarily filtered or not.
Description
Technical Field
The invention relates to the technical field of sewage filtration, in particular to a sewage multiple filtration device.
Background
The existing sewage filtering device can filter various water qualities, and can filter impurities in industrial wastewater, so that the industrial water can be utilized, and can filter urban and community water supply taking surface river water, lake water, seawater, reservoir water, well water and urban tap water as water sources, and remove sand grains, suspended matters, algae, organic matters and the like in the water; the method can be used for treating water for food processing industry, industrial circulating water for paper making industry and power plants, recycling industrial production water, treating industrial wastewater and the like; the invention discloses an industrial waste gas purification device with multiple filtering effects, which comprises a machine body, wherein an air inlet is formed in the left side of an inner cavity of the machine body, a first exhaust fan is sleeved on the surface of the air inlet, a first filter screen is arranged on the left side of the inner cavity of the machine body, a second filter screen is arranged in the middle of the inner cavity of the machine body, and a storage box is fixedly mounted on the upper left surface of the machine body. The utility model with the publication number of CN208032096U discloses a sewage treatment device for filtering sewage for multiple times, which comprises a water inlet pipe, a water outlet pipe, a sedimentation device for settling sludge in sewage, a filtering device for filtering sewage, and a sedimentation device arranged on the water inlet pipe, wherein the water inlet pipe is connected with the filtering device through a first communicating pipe; the water outlet pipe is communicated with the filtering device, the sedimentation device comprises a stirring mechanism arranged on the water inlet pipe, a sedimentation net arranged in the water inlet pipe and a first valve arranged on the water inlet pipe, the stirring mechanism is close to the water inlet of the water inlet pipe, a first water pump for pumping sewage is arranged on the first communication pipe, the stirring mechanism comprises a motor, a rotating shaft and stirring blades, the motor is arranged on the outer wall of the water inlet pipe, an output shaft of the motor is vertically downward, and the rotating shaft and the output shaft are coaxially arranged; but the multilayer filter device among the prior art can not the alternative filter sewage, also can not filter according to specific water demand, and filtration efficiency is lower.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a sewage multi-time filtering device.
(II) technical scheme
The utility model provides a sewage filter equipment many times, includes cartridge filter I and cartridge filter II, and cartridge filter I and cartridge filter II are the design of interior urceolus, and cartridge filter I sets up in cartridge filter II, is provided with a plurality of filtration pores I on the circumference lateral wall of cartridge filter on high half, and the circumference lateral wall below the half is solid wall.
Further, the outside of cartridge filter II is provided with the tank, is provided with the water pump in the tank, and the water pump is taken water out through the drinking-water pipe, and the upper end of cartridge filter I is provided with into water bucket, and the other end setting of drinking-water pipe is in intaking and fighting.
Furthermore, a water lifting device is arranged at the bottom of the filter cylinder I and comprises a water lifting plate, a screw rod, a guide rail I, a guide rail II and a positioning device; the water lifting plate is arranged at the bottom of the filter cartridge I, a screw hole matched with the screw rod is formed in the water lifting plate, one end of the screw rod penetrates through the screw hole to penetrate into the water lifting plate, and the other end of the screw rod vertically extends upwards into the filter cartridge I.
Furthermore, a guide rail through hole is formed in the water lifting plate, a guide rail I and a guide rail II penetrate through the guide rail through hole and penetrate into the water lifting plate, the other ends of the guide rail I and the guide rail II vertically extend upwards into the filter cylinder I, the positioning device is arranged at the top end of the screw rod and comprises a hollow groove, a fixing block, a spring and an arc-shaped bulge; the hollow groove sets up on the top of screw rod, and the fixed block setting is in the hollow inslot, and the one end and the fixed block of spring are connected, and the other end of spring is connected protrudingly, and the arch is two, sets up respectively in the outer end both sides in screw rod hollow groove.
Furthermore, the upper end of the filter cylinder I is also provided with a driving device, and the driving device comprises a lifting device, a motor, a rotating shaft, scattering blades, a gear and a step clamping device; the fixed outside that sets up at cartridge filter I of elevating gear, elevating gear passes through the lifter and is connected with the motor, the drive shaft and the rotation axis connection of motor, the vertical inside that stretches into cartridge filter I of axis of rotation, be provided with a plurality of blades of breaing up in the axis of rotation, the bottom of axis of rotation is provided with the gear, the bottom fixedly connected with ladder screens device of gear, ladder screens device includes two montants on the both sides of diaphragm, the centre of diaphragm is provided with the screens groove, the both ends in screens groove be provided with the protruding matched with arc concave edge of arc.
Furthermore, a solid wall is arranged on the circumferential side wall of the filter cartridge II above one half of the height, a filter hole II is arranged on the circumferential side wall below one half of the height, an annular bearing plate is arranged between the filter cartridge II and the filter cartridge I, and a telescopic device is arranged on the annular bearing plate and drives the annular bearing plate to move up and down.
(III) advantageous effects
Compared with the prior art, the invention provides a sewage multiple-filtration device, which has the following beneficial effects:
saving sewage through setting up water storage device, and carry out inside and outside setting through setting up two cartridge filters and carry out twice filtration that the optional formula was carried out to sewage, and break up the blade through the setting and break up sewage on filtration pore I, and accessible latch device makes lifting the ascending of water storage device optional formula will not break up sewage lifting to filtration pore I department on to filter, prevented because water falls too fast and not too late filtration, and set up the loading board in cartridge filter II and go up and down and select sewage whether to carry out secondary filter.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic structural diagram of a filter cartridge i according to the present invention.
Fig. 3 is a schematic structural view of the water lifting device of the present invention.
FIG. 4 is a schematic structural diagram of a positioning device according to the present invention.
In the figure: 1-a filter cartridge I, 2-a filter hole I, 3-a filter cartridge II, 4-a filter hole II, 5-a motor, 6-a rotating shaft, 7-a scattering blade, 8-a gear, 9-a water lifting plate, 10-a vertical rod, 11-a screw rod, 12-a guide rail I-II, 13-a fixed block, 14-a spring, 15-a bulge, 16-a clamping groove, 17-a hollow groove and 18-an annular bearing plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to FIGS. 1-4: a sewage multiple filtration device comprises a filter cartridge I (1) and a filter cartridge II (3), wherein the filter cartridge I (1) and the filter cartridge II (3) are designed into an inner cylinder and an outer cylinder, the filter cartridge I (1) is arranged in the filter cartridge II (3), a plurality of filter holes I (1) are formed in the circumferential side wall of the filter cartridge above one half of the height, the circumferential side wall below one half is a solid wall, a water storage tank is arranged outside the filter cartridge II (3), a water pump is arranged in the water storage tank and pumps water out through a water pumping pipe, a water inlet hopper is arranged at the upper end of the filter cartridge I, the other end of the water pumping pipe is arranged in the water inlet hopper, a water lifting device is arranged at the bottom of the filter cartridge I (1), and the water lifting device comprises a water lifting plate 9, a screw rod 11, a guide rail I; the water lifting plate 9 is arranged at the bottom of the filter cartridge I (1), a screw hole matched with the screw rod 11 is formed in the water lifting plate 9, one end of the screw rod 11 penetrates through the screw hole to penetrate into the water lifting plate, the other end of the screw rod 11 vertically extends upwards into the filter cartridge I (1), a guide rail penetrating hole is further formed in the water lifting plate 9, the guide rail I and the guide rail II penetrate through the guide rail penetrating hole to penetrate into the water lifting plate 9, the other ends of the guide rail I (12) and the guide rail II (12) vertically extend upwards into the filter cartridge I (1), the positioning device is arranged at the top end of the screw rod 11 and comprises a hollow groove 17, a fixing block 13, a spring 14 and an arc-shaped bulge; the hollow groove 17 is arranged at the top end of the screw rod 11, the fixed block 13 is arranged in the hollow groove 17, one end of the spring 14 is connected with the fixed block 13, the other end of the spring 14 is connected with the two protrusions 15, the two protrusions 15 are respectively arranged at two sides of the outer end of the hollow groove 17 of the screw rod 11, the upper end of the filter cartridge I (1) is further provided with a driving device, and the driving device comprises a lifting device (not shown), a motor 5, a rotating shaft 6, a scattering blade 7, a gear 8 and a step clamping device; the lifting device is fixedly arranged outside the filter cartridge I (1), the lifting device is connected with the motor 5 through a lifting rod, a driving shaft of the motor 5 is connected with the rotating shaft 6, the rotating shaft 6 vertically extends into the filter cartridge I (1), a plurality of scattering blades 7 are arranged on the rotating shaft 6, a gear 8 is arranged at the bottom of the rotating shaft 6, a step clamping device is fixedly connected to the bottom of the gear 8, the step clamping device comprises two vertical rods 10 at two sides of a transverse plate, a clamping groove 16 is arranged in the middle of the transverse plate, arc concave edges matched with the arc bulges 15 are arranged at two ends of the clamping groove 16, a solid wall is arranged above half of the height of the circumferential side wall of the filter cartridge II (2), a filter hole II (4) is arranged on the circumferential side wall below half of the filter cartridge II (4), an annular bearing plate 18 is arranged between the filter cartridge II (4) and the filter cartridge I (1), the telescoping device moves the annular bearing plate 18 up and down.
The working process of the invention is as follows: the sewage is injected into the filter cylinder I, the starting motor drives the rotating shaft to rotate to drive the breaking blade to break up the sewage and enable the sewage to be scattered on the filter hole I to be filtered, after the sewage is filtered to a certain degree, the sewage stops entering the filter, the lifting device is started to drive the motor to descend, the screw rod is clamped to the step clamping device, the motor drives the screw rod to rotate to drive the water lifting plate to ascend, so that the unfiltered water rises to the filter hole I to be filtered again, the filtered water is stored in the filter cylinder II, and the expansion device is started according to whether the secondary filtering is needed.
Claims (3)
1. A sewage multiple filtration device comprises a filter cartridge I and a filter cartridge II, wherein the filter cartridge I and the filter cartridge II are designed into an inner cylinder and an outer cylinder, the filter cartridge I is arranged in the filter cartridge II, a plurality of filter holes I are formed in the circumferential side wall of the filter cartridge above half of the height, the circumferential side wall below half of the height is a solid wall, a water storage tank is arranged outside the filter cartridge II, a water pump is arranged in the water storage tank, the water pump pumps water out through a water pumping pipe, a water inlet hopper is arranged at the upper end of the filter cartridge I, the other end of the water pumping pipe is arranged in the water inlet hopper, a water lifting device is arranged at the bottom of the filter cartridge I, and the water lifting device comprises a water; the water lifting plate is arranged at the bottom of the filter cylinder I, a screw hole matched with the screw rod is formed in the water lifting plate, one end of the screw rod penetrates through the screw hole and penetrates into the water lifting plate, the other end of the screw rod vertically extends upwards into the filter cylinder I, a guide rail penetrating hole is further formed in the water lifting plate, the guide rail I and the guide rail II penetrate through the guide rail penetrating hole and penetrate into the water lifting plate, the other ends of the guide rail I and the guide rail II vertically extend upwards into the filter cylinder I, the positioning device is arranged at the top end of the screw rod, and the positioning device comprises a hollow groove, a fixing block; the hollow groove sets up on the top of screw rod, and the fixed block setting is in the hollow inslot, and the one end and the fixed block of spring are connected, and the other end of spring is connected protrudingly, and the arch is two, sets up respectively in the outer end both sides in screw rod hollow groove.
2. The multiple sewage filtration apparatus of claim 1, wherein: the upper end of the filter cylinder I is also provided with a driving device, and the driving device comprises a lifting device, a motor, a rotating shaft, breaking blades, a gear and a stepped clamping device; the fixed outside that sets up at cartridge filter I of elevating gear, elevating gear passes through the lifter and is connected with the motor, the drive shaft and the rotation axis connection of motor, the vertical inside that stretches into cartridge filter I of axis of rotation, be provided with a plurality of blades of breaing up in the axis of rotation, the bottom of axis of rotation is provided with the gear, the bottom fixedly connected with ladder screens device of gear, ladder screens device includes two montants on the both sides of diaphragm, the centre of diaphragm is provided with the screens groove, the both ends in screens groove be provided with the protruding matched with arc concave edge of arc.
3. The multiple sewage filtration apparatus of claim 1, wherein: the circumferential side wall of the filter cartridge II is provided with a solid wall above one half of the height, the circumferential side wall below one half of the height is provided with a filter hole II, an annular bearing plate is arranged between the filter cartridge II and the filter cartridge I, and the annular bearing plate is provided with a telescopic device which drives the annular bearing plate to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839582.8A CN111921255B (en) | 2020-08-19 | 2020-08-19 | Sewage multi-time filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839582.8A CN111921255B (en) | 2020-08-19 | 2020-08-19 | Sewage multi-time filtering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111921255A true CN111921255A (en) | 2020-11-13 |
| CN111921255B CN111921255B (en) | 2022-07-19 |
Family
ID=73304402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010839582.8A Active CN111921255B (en) | 2020-08-19 | 2020-08-19 | Sewage multi-time filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111921255B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4106094A1 (en) * | 1991-02-27 | 1992-09-03 | Schenk Filterbau Gmbh | AGITATOR NUT FILTER |
| CN201366271Y (en) * | 2009-02-05 | 2009-12-23 | 汤庆华 | Filtering device capable of selecting water samples |
| CN205699740U (en) * | 2016-03-28 | 2016-11-23 | 潘桂霞 | The high efficiency filter of moveable carborundum powder and retracting device |
| CN205850363U (en) * | 2016-08-08 | 2017-01-04 | 刘昱彤 | A kind of manual Physical Experiment filter |
| CN109692516A (en) * | 2019-01-19 | 2019-04-30 | 中国农业科学院农田灌溉研究所 | A kind of preposition self-cleaning filter device of water pump |
| CN209317150U (en) * | 2018-12-08 | 2019-08-30 | 重庆首德环保科技有限公司 | A kind of lifting type sewage treating device |
| CN210409739U (en) * | 2019-06-02 | 2020-04-28 | 成都普什制药有限公司 | Liquid medicine filter equipment of removable filter core for pharmacy |
| CN111547942A (en) * | 2020-05-11 | 2020-08-18 | 朱彬苇 | Rotary stacked scum adsorption device applied to sewage treatment |
-
2020
- 2020-08-19 CN CN202010839582.8A patent/CN111921255B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4106094A1 (en) * | 1991-02-27 | 1992-09-03 | Schenk Filterbau Gmbh | AGITATOR NUT FILTER |
| CN201366271Y (en) * | 2009-02-05 | 2009-12-23 | 汤庆华 | Filtering device capable of selecting water samples |
| CN205699740U (en) * | 2016-03-28 | 2016-11-23 | 潘桂霞 | The high efficiency filter of moveable carborundum powder and retracting device |
| CN205850363U (en) * | 2016-08-08 | 2017-01-04 | 刘昱彤 | A kind of manual Physical Experiment filter |
| CN209317150U (en) * | 2018-12-08 | 2019-08-30 | 重庆首德环保科技有限公司 | A kind of lifting type sewage treating device |
| CN109692516A (en) * | 2019-01-19 | 2019-04-30 | 中国农业科学院农田灌溉研究所 | A kind of preposition self-cleaning filter device of water pump |
| CN210409739U (en) * | 2019-06-02 | 2020-04-28 | 成都普什制药有限公司 | Liquid medicine filter equipment of removable filter core for pharmacy |
| CN111547942A (en) * | 2020-05-11 | 2020-08-18 | 朱彬苇 | Rotary stacked scum adsorption device applied to sewage treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111921255B (en) | 2022-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114409116B (en) | Full-automatic wastewater integrated multi-stage treatment equipment | |
| CN104707389A (en) | Rotary-drum vacuum filtration type water-supply industrial wastewater treatment device and water-supply industrial wastewater treatment method | |
| CN111389072A (en) | Domestic sewage treatment is with filtering sediment device | |
| CN104030522A (en) | Deep treatment device for ternary composite flooding oilfield oil production wastewater | |
| CN204563747U (en) | Rotating drum vacuum filtration formula water supply industry wastewater treatment equipment | |
| CN111921255B (en) | Sewage multi-time filtering device | |
| CN212799961U (en) | Oil gas field wastewater treatment device | |
| CN201261741Y (en) | Intelligent variable frequency rotating self-cleaning low pollution membrane bioreactor | |
| CN203833770U (en) | Triplet composite driving oil field production waste water deep treatment device | |
| CN208591618U (en) | A kind of stirring-type sewage-treatment plant | |
| CN215102151U (en) | Drum type flat membrane water treatment equipment | |
| CN113354157B (en) | Pigment wastewater treatment process | |
| CN213865741U (en) | Dephosphorization formula sewage treatment integration equipment | |
| CN112807781B (en) | Industrial wastewater filters desilt device | |
| CN210915765U (en) | Surface water pollution treatment device | |
| CN209583898U (en) | A kind of sewage disposal system | |
| CN213965359U (en) | Water pollution administers and uses filter equipment | |
| CN217838550U (en) | Industrial sewage treatment equipment | |
| CN210237372U (en) | Industrial circulating water treatment device | |
| CN219885838U (en) | Layered purification equipment for wastewater | |
| CN219752106U (en) | Steel wastewater purification device | |
| CN210855688U (en) | Environment-friendly multistage sewage treatment device | |
| CN217909185U (en) | Horizontal multi-layer filter material deodorizing device | |
| CN220098744U (en) | Solid-liquid separation device for high-load anaerobic ammonia oxidation reactor | |
| CN212687796U (en) | Printing ink processing apparatus is used in printing of safety ring guarantor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220630 Address after: 064199 Yutian Economic Development Zone, Yutian County, Tangshan City, Hebei Province Applicant after: TANGSHAN DEYE ENERGY SAVING ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY Co.,Ltd. Address before: No.263, Kaiyuan Avenue, Luolong District, Luoyang City, Henan Province, 471000 Applicant before: Yuan Zhuangda |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |