CN109607639A - A kind of sewage purifying and treating device of municipal sewage pipe network - Google Patents
A kind of sewage purifying and treating device of municipal sewage pipe network Download PDFInfo
- Publication number
- CN109607639A CN109607639A CN201910028128.1A CN201910028128A CN109607639A CN 109607639 A CN109607639 A CN 109607639A CN 201910028128 A CN201910028128 A CN 201910028128A CN 109607639 A CN109607639 A CN 109607639A
- Authority
- CN
- China
- Prior art keywords
- support frame
- collecting chamber
- chamber
- fixedly welded
- filter chamber
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/08—Treatment of wastewater in the sewer, e.g. to reduce grease, odour
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a kind of sewage purifying and treating devices of municipal sewage pipe network, the filter chamber being arranged including collecting chamber and side, it is connected between the collecting chamber and filter chamber by communicating pipe, and the lower half of collecting chamber side is arranged in communicating pipe one end, the upper half of filter chamber is arranged in the other end, the top of the filter chamber has dug rectangular recess, horizontal shore is provided with above the filter chamber, the horizontal shore bottom end is fixedly welded with the convex block being adapted to rectangular recess, the horizontal shore bottom end is also mounted with filter screen, the collecting chamber is equipped with inlet tube far from the side of filter chamber, the top of the inlet tube is communicated with water butt, the lower half of the collecting chamber is set as funnel-form, and bottom end is communicated with sludge out pipe.The sewage purifying and treating device of the municipal sewage pipe network, can not only multistage filtering, filter screen can also can be handled, filter screen is avoided to block.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of the dirty water decontamination handles dress of municipal sewage pipe network
It sets.
Background technique
Sewage treatment: the mistake that a certain water body or the water quality requirement reused purify it is discharged into reach sewage
Journey.It is each that sewage treatment is widely used in building, agricultural, traffic, the energy, petrochemical industry, environmental protection, urban landscape, medical treatment, food and drink etc.
The daily life of common people is also come into field more and more.Classify by sewage source, it is dirty that sewage treatment is generally divided into production
Water process and sanitary sewage disposal.Production waste includes trade effluent, rural sewage and medical sewage etc., and sanitary sewage is just
It is the sewage that daily life generates, refers to the complex mixture of various forms of inorganic matters and organic matter, comprising: 1. floats and outstanding
Floating size solid particle；2. gluey and gel diffusate；3. pure solution.In sewage disposal process, since itself has
Many rubbish, liquid are muddy, and subsequent processing is caused to be got up inconvenience.
Therefore it is directed to this status, there is an urgent need to design and produce a kind of the dirty water decontamination handles dress of municipal sewage pipe network
It sets, to meet the needs of actual use.
Summary of the invention
The purpose of the present invention is to provide a kind of sewage purifying and treating devices of municipal sewage pipe network, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme: a kind of the dirty water decontamination handles of municipal sewage pipe network
Device is connected between the collecting chamber and filter chamber by communicating pipe including the filter chamber that collecting chamber and side are arranged, and is connected to
The lower half of collecting chamber side is arranged in pipe one end, and the upper half of filter chamber is arranged in the other end, and the top of the filter chamber is dug
Equipped with rectangular recess, it is provided with horizontal shore above the filter chamber, the horizontal shore bottom end is fixedly welded with and square
The convex block of connected in star adaptation, the horizontal shore bottom end is also mounted with filter screen, side of the collecting chamber far from filter chamber
Inlet tube is installed, the top of the inlet tube is communicated with water butt, and the lower half of the collecting chamber is set as funnel-form, and bottom
End is communicated with sludge out pipe, and the part of close communicating pipe is also fixedly welded with vertical support frame, the vertical branch in the collecting chamber
Support has dug slot far from the side of communicating pipe, and the sliding block being slidably connected is equipped in the slot of vertical support frame, and sliding block connects
It is connected to clearing apparatus, another group of filter screen is fixedly connected in the vertical support frame；
Oval support frame is installed in the filter chamber, is also fixedly connected with one group of filter screen on the ellipse support frame,
It is provided with rotating device on the filter screen of the ellipse support frame, the filter chamber is also equipped with circular support frame, the circle
Quartz sand filtration layer is provided on support frame, the lower section of oval support frame is arranged in the circular support frame, and the filter chamber is also
Discharge nozzle and outlet pipe are installed.
Preferably, the clearing apparatus includes rotating electric machine, connecting rod and hairbrush, and the rotating electric machine is arranged in collecting chamber
The top for the support plate that side is fixedly welded, the output shaft of the rotating electric machine run through collecting chamber, and one end of output shaft with turn
The side center of disk is fixedly welded, and the threaded hole internal screw thread being drilled on the turntable is connected with bolt, and the bolt, which also extends through, to be turned
The other end of the through-hole that bar drill is set, the bull stick is hinged by shaft and lifting lug, and the lifting lug is fixed on another group of sliding block, and
Sliding block is slidably connected with sliding rail, and the side of the sliding rail is fixedly welded by the vertical inner wall of connecting rod and collecting chamber, sliding block
Bottom end is fixedly welded with vertical bar, and the bottom end of the vertical bar and the top of horizontal positioned hairbrush are fixedly welded, the brush of the hairbrush
Hair resists the filter screen of vertical support frame, and side of the both ends of the hairbrush respectively with the sliding block in two groups of vertical support frames is fixed
Welding.
Preferably, the rotating device includes servo motor, brush and rotation axis, and the servo motor is arranged in filter chamber
Top, the output shaft side of servo motor and the side of rotation axis be fixedly welded, and the rotation axis runs through filter chamber, and one end
It is fixedly welded with the side center of brush, the bristle of the brush resists the filter screen of oval support frame.
Preferably, the discharge nozzle is provided with the side of oval support frame, and circular support frame is arranged in the outlet pipe
Lower section, the discharge nozzle, outlet pipe, sludge out pipe and is mounted on control valve on communicating pipe.
Preferably, the water butt is arranged in another group of support plate that collecting chamber side is fixedly welded, and support plate is dug
Equipped with groove, the funnelform lower half of water butt is arranged in groove.
Preferably, vertical, the bottom of the collecting chamber and filter chamber of direction of the direction with rotation axis of the oval support frame
End is fixedly welded with fixed frame.
Technical effect and advantage of the invention: the sewage purifying and treating device of the municipal sewage pipe network, it is horizontal by setting
Support frame, so that the solid refuse of the aqueous imported will be filtered net and stop, and the mounting means of horizontal shore is not only stable,
And facilitating later use drawstring mobile by loop wheel machine, vertical support frame can stop flocky precipitate, and clearing apparatus can come
It returns and cleans filter screen, avoid the movement with water flow, flocky precipitate stops the mesh of filter screen, and clearing apparatus plays cleaning
Function, the oval support frame of filter chamber are capable of providing accurate filtering, the cleaning of rotating device again and filter screen are avoided to block, benefit
Filter screen is made to sweep to discharge nozzle with the thrust of water flow, the sewage purifying and treating device of the municipal sewage pipe network can not only be more
Grade filtering, can also handle filter screen, filter screen is avoided to block.
Detailed description of the invention
Fig. 1 is cross-sectional view of the invention；
Fig. 2 is the enlarged drawing of structure at A in Fig. 1 of the invention.
In figure: 1 collecting chamber, 2 filter chambers, 3 communicating pipes, 4 horizontal shores, 5 inlet tubes, 6 water butts, 7 sludge out pipe, 8 are erected
Allotment support, 9 clearing apparatus, 10 oval support frames, 11 rotating devices, 12 circular support framves, 13 discharge nozzles, 14 outlet pipes, 15
Rotating electric machine, 16 connecting rods, 17 hairbrush, 18 support plates, 19 turntables, 20 bolts, 21 bull sticks, 22 lifting lugs, 23 sliding rails, 24 vertical bars,
25 servo motors, 26 brushes, 27 rotation axis, 28 control valves, 29 fixed frames.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In addition to non-individual defines the direction pointed out, present document relates to the directions such as up, down, left, right, before and after be with this hair
Subject to the directions such as the up, down, left, right, before and after in figure shown in bright, illustrate in this together.
The present invention provides a kind of sewage purifying and treating devices of municipal sewage pipe network as shown in Figs. 1-2, including collect
The filter chamber 2 of room 1 and side setting, by being connected to communicating pipe 3 between the collecting chamber 1 and filter chamber 2, and 3 one end of communicating pipe
The lower half of 1 side of collecting chamber is set, and the upper half of filter chamber 2 is arranged in the other end, and the top of the filter chamber 2 has been dug
Rectangular recess is provided with horizontal shore 4 above the filter chamber 2 and (is also connected with drawstring on horizontal shore 4, loop wheel machine is facilitated to make
With), 4 bottom end of horizontal shore is fixedly welded with the convex block being adapted to rectangular recess, and 4 bottom end of horizontal shore is also hung
It is connected to filter screen, the collecting chamber 1 is equipped with inlet tube 5 far from the side of filter chamber 2, and the top of the inlet tube 5 is communicated with
Water butt 6 (containing medical fluid, so that the sundries in sewage forms floccule), the lower half of the collecting chamber 1 is set as funnel-form,
And bottom end is communicated with sludge out pipe 7, the part of close communicating pipe 3 is also fixedly welded with vertical support frame 8, institute in the collecting chamber 1
It states vertical support frame 8 and has dug slot far from the side of communicating pipe 3, be equipped with and be slidably connected in the slot of vertical support frame 8
Sliding block, sliding block are connected with clearing apparatus 9, another group of filter screen are fixedly connected in the vertical support frame 8；
Oval support frame 10 is installed in the filter chamber 2, is also fixedly connected with one group of mistake on the ellipse support frame 10
Strainer, it is described ellipse support frame 10 filter screen on be provided with rotating device 11, the filter chamber 2 is also equipped with circular support frame
12, quartz sand filtration layer is provided on the circular support frame 12, and oval support frame 10 is arranged in the circular support frame 12
Lower section, the filter chamber 2 are also equipped with discharge nozzle 13 and outlet pipe 14.
Specifically, the clearing apparatus 9 includes rotating electric machine 15, connecting rod 16 and hairbrush 17, the rotating electric machine 15 is set
The top for the support plate 18 being fixedly welded in 1 side of collecting chamber is set, the output shaft of the rotating electric machine 15 runs through collecting chamber 1, and
One end of output shaft and the side center of turntable 19 are fixedly welded, and the threaded hole internal screw thread being drilled on the turntable 19 is connected with spiral shell
Bolt 20, the bolt 20 also extend through the through-hole that bull stick 21 is drilled with, and the other end of the bull stick 21 is hinged by shaft and lifting lug 22,
The lifting lug 22 is fixed on another group of sliding block, and sliding block is slidably connected with sliding rail 23, and the side of the sliding rail 23 passes through connection
Bar 16 and the vertical inner wall of collecting chamber 1 are fixedly welded, and the bottom end of sliding block is fixedly welded with vertical bar 24, the bottom end of the vertical bar 24 with
The top of horizontal positioned hairbrush 17 is fixedly welded, and the bristle of the hairbrush 17 resists the filter screen of vertical support frame 8, the hair
Side of the both ends of brush 17 respectively with the sliding block in two groups of vertical support frames 8 is fixedly welded, and the east of rider-type brush back and forth of hairbrush 17 is kept away
Exempt from filter screen blocking.
Specifically, the rotating device 11 includes servo motor 25, brush 26 and rotation axis 27, the servo motor 25 is set
The top in filter chamber 2 is set, the output shaft side of servo motor 25 and the side of rotation axis 27 are fixedly welded, the rotation axis 27
Through filter chamber 2, and one end and the side center of brush 26 are fixedly welded, and the bristle of the brush 26 resists oval support frame 10
Filter screen, filter screen is cleaned, avoids blocking.
Specifically, the discharge nozzle 13 is provided with the side of oval support frame 10, the setting of outlet pipe 14 is propped up in circle
The lower section of support 12, the discharge nozzle 13, outlet pipe 14, sludge out pipe 7 and is mounted on control valve 28 on communicating pipe 3.
Specifically, the water butt 6 is arranged in another group of support plate 18 that 1 side of collecting chamber is fixedly welded, and support
Plate 18 digs fluted, and the funnelform lower half of water butt 6 is arranged in groove, so that water butt 6 is more stable.
Specifically, direction vertical, the collecting chamber 1 and the filter chamber of the direction of the ellipse support frame 10 and rotation axis 27
2 bottom end is fixedly welded with fixed frame 29.
Specifically, the horizontal shore filter screen mesh number is less than the mesh number of 8 filter screen of vertical support frame, oval support frame
Filter screen mesh number it is most.
Specifically, the sewage purifying and treating device of the municipal sewage pipe network, sewage imports horizontal branch from the top of collecting chamber 1
The filter screen of support 4 can collect the big rubbish of the particle in sewage, during this period from the importing medical fluid in water butt 6, be formed
Floccule, floccule can fall on the bottom end of collecting chamber 1, and the floccule not fallen also is flowed with water flow, can be vertically supported frame 8
Filter screen stop, the rotation of rotating electric machine 15 drives the bull stick 21 of turntable 19 mobile, pushes lifting lug 22 and sliding block vertically reciprocal
Mobile, so that hairbrush 17 cleans the filter screen of vertical support frame 8, the filter screen of the oval support frame 10 of filter chamber 2 carries out another
Secondary filtering, servo motor 25 drives rotation axis 27 to rotate, so that brush 26 can also clean filter screen, under the impulse force of water flow,
Filter screen can slowly be focused in discharge nozzle 13, and quartz sand filtration layer carries out last time filtering.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of sewage purifying and treating device of municipal sewage pipe network, the filter chamber (2) including collecting chamber (1) and side setting,
It is characterized by: being connected between the collecting chamber (1) and filter chamber (2) by communicating pipe (3), and communicating pipe (3) one end is arranged
In the lower half of collecting chamber (1) side, the other end is arranged in the upper half of filter chamber (2), and the top of the filter chamber (2) is dug
There is rectangular recess, is provided with horizontal shore (4) above the filter chamber (2), horizontal shore (4) bottom end is fixedly welded
There is the convex block being adapted to rectangular recess, horizontal shore (4) bottom end is also mounted with filter screen, and the collecting chamber (1) is separate
The side of filter chamber (2) is equipped with inlet tube (5), and the top of the inlet tube (5) is communicated with water butt (6), the collecting chamber
(1) lower half is set as funnel-form, and bottom end is communicated with sludge out pipe (7), close to communicating pipe (3) in the collecting chamber (1)
Part is also fixedly welded with vertical support frame (8), and the vertical support frame (8) has dug slot far from the side of communicating pipe (3),
The sliding block being slidably connected is installed, sliding block is connected with clearing apparatus (9), the vertical support in the slot of vertical support frame (8)
Another group of filter screen is fixedly connected on frame (8)；
It is equipped with oval support frame (10) in the filter chamber (2), is also fixedly connected with one group on the ellipse support frame (10)
Filter screen, it is described ellipse support frame (10) filter screen on be provided with rotating device (11), the filter chamber (2) is also equipped with circle
Shape support frame (12), quartz sand filtration layer is provided on the circular support frame (12), and circular support frame (12) setting exists
The lower section of oval support frame (10), the filter chamber (2) are also equipped with discharge nozzle (13) and outlet pipe (14).
2. a kind of sewage purifying and treating device of municipal sewage pipe network according to claim 1, it is characterised in that: described clear
Sweeping device (9) includes rotating electric machine (15), connecting rod (16) and hairbrush (17), and the rotating electric machine (15) is arranged in collecting chamber
(1) output shaft of the top for the support plate (18) that side is fixedly welded, the rotating electric machine (15) runs through collecting chamber (1), and defeated
One end of shaft and the side center of turntable (19) are fixedly welded, and the threaded hole internal screw thread being drilled on the turntable (19) is connected with
Bolt (20), the bolt (20) also extend through the through-hole that bull stick (21) is drilled with, the other end of the bull stick (21) by shaft with
Hingedly, the lifting lug (22) is fixed on another group of sliding block lifting lug (22), and sliding block is slidably connected with sliding rail (23), the sliding rail
(23) side is fixedly welded by connecting rod (16) and the vertical inner wall of collecting chamber (1), and the bottom end of sliding block is fixedly welded with perpendicular
Bar (24), the bottom end of the vertical bar (24) and the top of horizontal positioned hairbrush (17) are fixedly welded, the brush of the hairbrush (17)
Hair resists the filter screens of vertical support frame (8), the both ends of the hairbrush (17) respectively with the sliding block on two groups of vertical support frames (8)
Side be fixedly welded.
3. a kind of sewage purifying and treating device of municipal sewage pipe network according to claim 1, it is characterised in that: described turn
Dynamic device (11) include servo motor (25), brush (26) and rotation axis (27), and the servo motor (25) is arranged in filter chamber
(2) top, the output shaft side of servo motor (25) and the side of rotation axis (27) are fixedly welded, and the rotation axis (27) is passed through
Across filter chamber (2), and one end and the side center of brush (26) are fixedly welded, and the bristle of the brush (26) resists oval support
The filter screen of frame (10).
4. a kind of sewage purifying and treating device of municipal sewage pipe network according to claim 1, it is characterised in that: it is described go out
Expects pipe (13) is provided with the side of oval support frame (10), and the outlet pipe (14) is arranged in the lower section of circular support frame (12),
It the discharge nozzle (13), outlet pipe (14), sludge out pipe (7) and is mounted on control valve (28) on communicating pipe (3).
5. a kind of sewage purifying and treating device of municipal sewage pipe network according to claim 1, it is characterised in that: the storage
Bucket (6) be arranged on another group of support plate (18) that collecting chamber (1) side is fixedly welded, and support plate (18) dug it is recessed
The funnelform lower half of slot, water butt (6) is arranged in groove.
6. a kind of sewage purifying and treating device of municipal sewage pipe network according to claim 1, it is characterised in that: described ellipse
The direction of circle support frame (10) and the direction of rotation axis (27) are vertical, and the bottom end of the collecting chamber (1) and filter chamber (2) is fixed
It is welded with fixed frame (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910028128.1A CN109607639A (en) | 2019-01-11 | 2019-01-11 | A kind of sewage purifying and treating device of municipal sewage pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910028128.1A CN109607639A (en) | 2019-01-11 | 2019-01-11 | A kind of sewage purifying and treating device of municipal sewage pipe network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109607639A true CN109607639A (en) | 2019-04-12 |
Family
ID=66016683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910028128.1A Pending CN109607639A (en) | 2019-01-11 | 2019-01-11 | A kind of sewage purifying and treating device of municipal sewage pipe network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109607639A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111087103A (en) * | 2019-12-31 | 2020-05-01 | 赣州雅格贸易有限公司 | Sewage treatment plant for building process |
| CN111170533A (en) * | 2020-01-09 | 2020-05-19 | 沈春波 | Sewage centralized treatment device for municipal administration |
| CN112999719A (en) * | 2021-02-26 | 2021-06-22 | 青岛西海岸市政工程有限公司 | Municipal administration sewage is sewage purification unit for sewage pipe network |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5198111A (en) * | 1991-01-10 | 1993-03-30 | Delaware Capital Formation, Inc. | Filter with reciprocating cleaner unit |
| CN107265684A (en) * | 2017-08-03 | 2017-10-20 | 深圳柒祁祺商贸有限公司 | A kind of anticlogging environment protection sewage processing unit |
| CN206955806U (en) * | 2017-04-06 | 2018-02-02 | 南方创业（天津）科技发展有限公司 | A kind of special sewage-treatment plant of steel plant |
| CN107789893A (en) * | 2017-10-23 | 2018-03-13 | 惠安县科联农业科技有限公司 | A kind of anti-resistive sewage water filtration precipitation treatment device |
| CN207435198U (en) * | 2017-09-27 | 2018-06-01 | 廊坊丰辉城市建设发展股份有限公司 | A kind of municipal wastewater processing unit |
-
2019
- 2019-01-11 CN CN201910028128.1A patent/CN109607639A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5198111A (en) * | 1991-01-10 | 1993-03-30 | Delaware Capital Formation, Inc. | Filter with reciprocating cleaner unit |
| CN206955806U (en) * | 2017-04-06 | 2018-02-02 | 南方创业（天津）科技发展有限公司 | A kind of special sewage-treatment plant of steel plant |
| CN107265684A (en) * | 2017-08-03 | 2017-10-20 | 深圳柒祁祺商贸有限公司 | A kind of anticlogging environment protection sewage processing unit |
| CN207435198U (en) * | 2017-09-27 | 2018-06-01 | 廊坊丰辉城市建设发展股份有限公司 | A kind of municipal wastewater processing unit |
| CN107789893A (en) * | 2017-10-23 | 2018-03-13 | 惠安县科联农业科技有限公司 | A kind of anti-resistive sewage water filtration precipitation treatment device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111087103A (en) * | 2019-12-31 | 2020-05-01 | 赣州雅格贸易有限公司 | Sewage treatment plant for building process |
| CN111170533A (en) * | 2020-01-09 | 2020-05-19 | 沈春波 | Sewage centralized treatment device for municipal administration |
| CN112999719A (en) * | 2021-02-26 | 2021-06-22 | 青岛西海岸市政工程有限公司 | Municipal administration sewage is sewage purification unit for sewage pipe network |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 068350, No. 28, development zone, economic development zone, Fengning Manchu Autonomous County, Chengde, Hebei Applicant after: Beiwang Group Co.,Ltd. Address before: 067000 No. 28 Road, Economic Development Zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province Applicant before: BEI WANG CONSTRUCTION GROUP CO.,LTD. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |