CN114197611A - Sewage treatment fortune dimension device based on BIM technique - Google Patents
Sewage treatment fortune dimension device based on BIM technique Download PDFInfo
- Publication number
- CN114197611A CN114197611A CN202210054133.1A CN202210054133A CN114197611A CN 114197611 A CN114197611 A CN 114197611A CN 202210054133 A CN202210054133 A CN 202210054133A CN 114197611 A CN114197611 A CN 114197611A
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- sewage treatment
- water
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- maintenance device
- flow
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- 239000010865 sewage Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 238000005520 cutting process Methods 0.000 claims abstract description 66
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 45
- 238000012423 maintenance Methods 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Crushing And Pulverization Processes (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
The invention discloses a BIM technology-based sewage treatment operation and maintenance device, which comprises an anti-blocking mechanism arranged in a sewage pipeline, wherein the anti-blocking mechanism comprises: the flow blocking intercepting shelf component at least comprises a concave structure so as to enable water to impact to form an arc-shaped water block; the rotary cutting tool assembly is arranged on the outer wall of the flow-resisting intercepting frame assembly and is driven to rotate by water flow, the rotary cutting tool assembly comprises a plurality of blades which are obliquely arranged, and the cutting edge parts of the blades are tangent to the side wall of the flow-resisting intercepting frame assembly. According to the BIM technology-based sewage treatment operation and maintenance device, a large water resistance can be provided through the Y-shaped water tank, enough water flows can pass through the Y-shaped water tank to drive the rotary cutter assembly to rotate, and the water resistance can eject garbage on the water tank; through the tangency of buckled plate and abrasive disc, and the buckled plate is nearer from the geometric construction, makes rubbish by the buckled plate cooperation winding, grinds with the abrasive disc contact and moves, and is promoted by rivers through the cutting knife and keeps rotating, grinds with the tangent maintenance of buckled plate and moves.
Description
Technical Field
The invention relates to the technical field of sewage treatment operation and maintenance devices, in particular to a sewage treatment operation and maintenance device based on a BIM (building information modeling) technology.
Background
People's life can produce a large amount of sewage now, and a large amount of sewage can concentrate and discharge through sewage pipes, if sewage pipes causes the jam, then causes very big puzzlement to people's daily life.
As patent CN212680232U, published (public): 2021-03-12, discloses a device for operation and maintenance of sewage treatment, comprising a filter plate, a water pump and a body, wherein the corners of the bottom of the body are all fixedly connected with rollers, one side of the bottom of the body is provided with an anti-clogging mechanism, one side of the body is movably hinged with a cover body, the center of the top of the body is provided with a rotating mechanism, the rotating mechanism comprises a servo motor, a sliding rod, a water diversion plate, a spray head and a sliding groove, the bottom of the servo motor is provided with the water diversion plate, the sliding groove is arranged on the inner wall of the top of the filter plate, the two sides of the bottom of the water diversion plate are both provided with the spray head, the two sides of the top of the water diversion plate are both fixedly connected with the sliding rod, one end of the sliding rod extends to the inside of the sliding groove, one side of the top of the body is provided with a deodorizing mechanism, the inside of the bottom of the body is provided with a storage box, and deposit the one side on case top and be provided with the water pump, the top fixedly connected with connecting pipe of depositing the case, deposit one side fixedly connected with outlet of bottom of the case portion, equal fixedly connected with diaphragm on the inside wall at body both ends, the inside central point department of putting of body swing joint places the case, and the internally mounted who places the case has the filter. The water diversion plate is driven to rotate under the action of the servo motor, and in the process of rotating the water diversion plate, clear water in the storage box can be sent into the water diversion plate through a pipeline by the water pump, then water is uniformly distributed to the spray heads by the water diversion plate, and at the moment, the water diversion plate can drive the spray heads to carry out multidirectional cleaning on the transverse plate under the continuous rotation, so that the effect that the operation and maintenance device for sewage treatment is convenient for multidirectional cleaning is achieved.
In the actual operation process, sewage pipes are mostly domestic wastewater, a plurality of linear garbage and large-volume garbage are easily blocked in the sewage pipes, most sewage treatment devices only cut, but the linear garbage is easily wound in a rotating shaft due to the rotation and cutting of the sewage treatment devices, the sewage treatment devices are blocked, the damage of the sewage treatment devices is caused, the sewage treatment devices are immersed in the sewage, and the motor are easily driven to leak water to cause the damage.
Accordingly, there is a need for improvement in the above-mentioned problems of the prior art.
Disclosure of Invention
The invention aims to provide a BIM technology-based sewage treatment operation and maintenance device, which aims to solve the problems that most treatment devices only cut larger garbage through a cutting device driven by a motor to prevent the garbage from being blocked, but are easy to damage a rotating shaft by winding linear garbage in the rotating process; and because the motor is located inside the sewage for a long time, the motor is easy to leak water inside the sewage, so that the device is damaged and the like.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a sewage treatment fortune dimension device based on BIM technique, is including setting up in inside anti-blocking mechanism of sewage pipes, anti-blocking mechanism includes:
the flow blocking intercepting shelf component at least comprises a concave structure so as to enable water to impact to form an arc-shaped water block;
the rotary cutting tool assembly is arranged on the outer wall of the flow-obstructing intercepting frame assembly and is driven to rotate by water flow, the rotary cutting tool assembly comprises a plurality of blades which are obliquely arranged, and the edge opening parts of the blades are tangent to the side wall of the flow-obstructing intercepting frame assembly.
Preferably, the choke intercept rack assembly comprises a geometric framework on which the concave structure is located to form a water choke.
Preferably, the inside of the geometric framework is a Y-shaped structure, and the concave structure is positioned inside the Y-shaped structure so as to form the maximum water resistance area and the maximum water flowing area.
Preferably, the geometrical frame on the choke intercepting shelf assembly is provided with a convex part on the back side, and the convex part is tangent to the cutting edge of the blade.
Preferably, at least one grinding sheet is arranged on the convex part, and the grinding sheet is tangent to the blade edge part.
Preferably, a corrugated plate is arranged on one side of the cutting edge of the blade, and the surface of the corrugated plate is provided with concave-convex parts which are tangent to the grinding sheet.
Preferably, the concave-convex part is of a W-shaped structure, and the linear garbage is wound in a clamping mode.
Preferably, a through groove is formed in the blade, and a cutting knife is movably arranged in the through groove to cut the concave-convex winding garbage.
Preferably, the cutting knife is of a double-edge structure, and the cutting knife is driven to move back and forth by circumferential rotation of the rotary cutting tool assembly.
Preferably, the cutting knife is driven by the water flow to keep rotating so as to be tangent to the concave-convex parts of the corrugated plate.
In the technical scheme, the BIM technology-based sewage treatment operation and maintenance device provided by the invention has the following beneficial effects:
1. through the arrangement of the water tank with the Y-shaped structure in the geometric framework, on one hand, larger water resistance can be provided, on the other hand, larger water flow can pass through the water tank to drive the rotary cutting tool assembly behind to rotate, and the linear garbage wound on the water tank can be ejected out and flows out along the water flow due to the generation of the water resistance.
2. Through the tangency of buckled plate and abrasive disc, and the position of buckled plate is nearer than the position of blade from geometric framework for linear rubbish is at first lived by the cooperation winding of pivoted buckled plate, then through the contact with the abrasive disc, grinds and moves, makes its disconnection, and the setting through the cutting knife, because the promotion of rivers makes it keep rotating, can be tangent with the rubbish of winding between the buckled plate, continuously keeps grinding and moves.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of a sewage treatment apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a choke intercepting assembly provided in an embodiment of the present invention;
fig. 3 is a schematic structural view of a rotary cutting tool assembly according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a section of a sewage treatment apparatus provided in an embodiment of the present invention.
Description of reference numerals:
1. a rotary cutting tool assembly; 2. a choke interceptor shelf assembly; 101. a rotating shaft; 102. a helical fan blade; 103. a corrugated plate; 104. an insert pocket; 105. a cutting knife; 106. a chute; 107. rotating the block; 108. a blade; 109. a concave-convex portion; 201. a geometric framework; 202. a water tank; 203. and (5) grinding.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1-4, a sewage treatment fortune dimension device based on BIM technique is including setting up in inside anti-blocking mechanism of sewage pipes, prevents that blocking mechanism includes:
the choked flow intercepting shelf assembly 2 at least comprises a concave structure so as to enable water to impact to form an arc-shaped water resistance;
the rotary cutting tool assembly 1 is arranged on the outer wall of the flow-resisting intercepting frame assembly 2 and is driven to rotate by water flow, the rotary cutting tool assembly 1 comprises a plurality of blades 108 which are obliquely arranged, and cutting edge parts of the blades 108 are tangent to the side wall of the flow-resisting intercepting frame assembly 2.
Specifically, the flow-resisting intercepting frame assembly 2 arranged inside the sewage discharge pipeline provides a geometric framework 201 to be fixedly clamped inside for blocking and intercepting the garbage, a water tank 202 with a concave structure is arranged inside, and the water tank and an impacted water body can form an arc-shaped water resistance, so that the garbage wound outside the geometric framework 201 is flushed away and flows out along sewage; the inner water channel 202 of the choke intercepting rack assembly 2 can be of a convex structure, so that on one hand, water resistance can be generated, and linear garbage can be wound by the annular water channel 202; the inner water tank 202 of the flow-resisting intercepting frame assembly 2 can also be of a filter screen structure, can still generate water resistance, and can also enable water flow to pass through the groove so as to drive the rotary cutting tool assembly 1 to rotate;
and the other side of the choked flow intercepting shelf assembly 2 is rotatably provided with the rotary cutting tool assembly 1, the outer wall of the rotary cutting tool assembly 1 is provided with spiral fan blades 102 distributed in a circumferential array, the spiral fan blades 102 are spiral at a certain angle, and the whole rotary cutting tool assembly 1 can be driven to rotate circumferentially by the impact of water flow, the outer wall of each spiral fan blade 102 is provided with blades 108 arranged obliquely, the blades 108 can be matched with the inner wall of the sewage discharge pipeline to cut internal garbage, and the edge parts of the blades 108 are tangent to the back of the choked flow intercepting shelf assembly 2.
In the above technical solution, by the arrangement of the water tank 202 with the Y-shaped structure inside the geometric framework 201, on one hand, a large water resistance can be provided, and on the other hand, a large water flow can pass through to drive the rotary cutting tool assembly 1 behind to rotate, and the generation of the water resistance can eject the linear garbage wound on the water tank 202 and flow out along the water flow; still through the tangency of buckled plate 103 and abrasive disc 203, and the position of buckled plate 103 is nearer than the position of blade 108 from geometric framework 201 for linear rubbish is at first twined by the cooperation of pivoted buckled plate 103, then through the contact with abrasive disc 203, grinds, makes its disconnection, and through the setting of cutting knife 105, because the promotion of rivers, makes it can keep rotating, can carry out tangency with the rubbish of twining between buckled plate 103, continuously keeps grinding.
As an embodiment of the present invention, the obstructing intercepting frame assembly 2 includes a geometric frame 201, and the water tank 202 of the concave structure is located on the geometric frame 201 to form a water resistance, and the concave structure may be any one of X-shaped, square or O-shaped structures capable of forming a water resistance, which are known to those skilled in the art, and the main functions of the above structures are to make sewage impact to form a water resistance, make the water impact the inside to drive the rotary cutting tool assembly 1 to rotate circumferentially, and make the linear garbage wound outside the water tank 202 eject.
As a preferred embodiment of the present invention, as shown in fig. 1 and fig. 2, the concave structure is a "Y" type structure, first, a connecting block needs to be disposed at the center inside the geometric framework 201, so as to shield the rotating shaft 101 at the connection position with the rotary cutting tool assembly 1, and prevent the linear garbage from being wound inside the rotating shaft 101, so that the square or O shape cannot be used, and the concave structure of the "Y" type structure has a large enough space for water to pass through, so as to drive the rotary cutting tool assembly 1 at the back to rotate, and the "Y" type structure equally divides the circular geometric framework 201 into three equal parts, so as to block the linear garbage having a risk of winding around the rotating shaft 101, and generate enough water resistance to eject the garbage blocked on the water tank 202, and carry the garbage out through the flow of water.
As another embodiment provided by the present invention, the geometrical frame 201 on the choke holder assembly 2 is provided with a convex portion on the back side, and the convex portion is tangential to the cutting edge of the blade 108.
As another embodiment provided by the present invention, the surface of the protruding portion is provided with at least one grinding sheet 203, and the grinding sheet 203 is tangent to the cutting edge of the blade 108, the rotational cutting tool assembly 1 can be driven to rotate by the impact of the water flow, and since the grinding sheet 203 is tangent to the blade 108, the grinding sheet 203 and the blade 108 can keep friction, so that the linear waste ejected by the water resistance can be clamped inside the grinding sheet 203 and the blade 108 by the rotation of the blade 108, and the linear waste can be cut by the rotational friction.
As another embodiment of the present invention, a corrugated plate 103 is disposed on an outer wall of one side of a cutting edge portion of the blade 108, a concave-convex portion 109 is disposed on a surface of the corrugated plate 103, the concave-convex portion 109 is tangent to the grinding sheet 203, the concave-convex portion 109 may be a wave shape, a straight tooth shape or a pointed tooth shape, and the like, which are well known to those skilled in the art, and the concave-convex portions 109 may be configured to be rotatably engaged with the garbage ejected from the water tank 202, and when the concave-convex portions 109 rotate, the linear garbage is straightened by engagement between the concave-convex portions 109, and is ground with the grinding sheet 203 to be disconnected, so as to prevent the garbage from being wound on the rotating shaft 101.
As a preferred embodiment of the present invention, as shown in fig. 1, 2, 3 and 4, the concave-convex portion 109 is a "W" shaped structure, and is used for clamping and winding the linear garbage, and the convex block of the "W" shaped structure is narrow, so that the linear garbage ejected from the water tank 202 by water resistance can be conveniently clamped and wound by the rotating concave-convex portion 109, and when the concave-convex portion 109 rotates, the linear garbage keeps a straight state, and the concave-convex portion 109 is kept tangent to the grinding sheet 203, so that the grinding sheet 203 can be conveniently ground and disconnected, and the linear garbage is prevented from being wound on the rotating shaft 101, so that the device is damaged.
As another embodiment of the present invention, the blade 108 is further provided with a blade groove 104, the inner walls of the blade groove 104 on opposite sides are provided with sliding grooves 106, and the inside of the blade groove 104 is movably provided with a cutting knife 105, so that the cutting knife 105 can cut linear garbage wound between the concave-convex portions 109 and garbage flowing into the blade groove 104 from sewage.
As another embodiment of the present invention, the cutting blade 105 has a double-edged structure, so that the cutting blade 105 can be positioned inside the blade groove 104 to keep reciprocating movement by the circumferential rotation of the rotary cutting tool assembly 1, and the cutting blade can perform bidirectional cutting by the bidirectional cutting blade, thereby improving the cutting efficiency.
Furthermore, the cutting knife 105 also keeps circumferential rotation through the pressure of the inward impact of the water flow, so that the cutting edge can be tangent to the linear garbage clamped on the concave-convex part 109, and the cutting knife can grind the garbage clamped on the concave-convex part 109 together with the grinding sheet 203, accelerate the cutting speed of the garbage, and prevent the linear garbage from winding on the outer wall of the rotating shaft 101.
The working principle is as follows: the device is clamped in the sewage discharge pipeline through a geometric framework 201 with the outer wall of the flow-resisting intercepting frame assembly 2 being circular, and the rotary cutting tool assembly 1 is rotatably arranged at the back of the flow-resisting intercepting frame assembly 2 through the arrangement of a rotating shaft 101 and a rotating block 107;
through the arrangement of the water tank 202 with the Y-shaped structure, sewage can flow through the water tank through a larger water resistance and a larger circulation space, so that the sewage impacts the spiral fan blade 102, the whole spiral fan blade 102 can keep circumferential rotation, and the blades 108 on the outer wall of the spiral fan blade 102 are matched with the inner wall of the pipeline to cut garbage;
the linear garbage wound on the water tank 202 can be ejected out by the water resistance generated by the water tank 202 and flows out along the water flow, and the linear garbage which does not flow out along the water is clamped by the rotating concave-convex part 109 because the distance between the corrugated plate 103 and the water tank 202 is shorter than the distance between the blade 108 and the water tank 202;
then the clamped linear garbage and the grinding sheet 203 are subjected to rotational friction to be ground off, so that the rotating shaft 101 and the rotating block 107 cannot be wound, the cutting knife 105 arranged in the blade groove 104 can keep reciprocating motion in the blade groove 104 along with the rotation of the rotary cutting tool assembly 1 to perform bidirectional cutting, and the cutting knife 105 can keep circumferential rotation through the impact of water flow, so that the cutting edge of the cutting knife 105 can keep tangency with the concave-convex part 109, and the garbage clamped on the concave-convex part 109 is cut.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a sewage treatment fortune dimension device based on BIM technique which characterized in that, including setting up in inside anti-blocking mechanism of sewage pipes, anti-blocking mechanism includes:
the flow blocking intercepting shelf assembly (2) at least comprises a concave structure so as to enable water to impact to form an arc-shaped water block;
the rotary cutting tool assembly (1) is arranged on the outer wall of the flow-resisting intercepting frame assembly (2) and is driven to rotate by water flow, the rotary cutting tool assembly (1) comprises a plurality of blades (108) which are obliquely arranged, and the cutting edge parts of the blades (108) are tangent to the side wall of the flow-resisting intercepting frame assembly (2).
2. A BIM technology based sewage treatment operation and maintenance device according to claim 1, wherein the choke intercept rack assembly (2) comprises a geometrical frame (201), and the concave structure is positioned on the geometrical frame (201) to form a water resistance.
3. The BIM technology-based sewage treatment operation and maintenance device according to claim 2, wherein the inside of the geometric framework (201) is a Y-shaped structure, and the concave structure is positioned inside the Y-shaped structure so as to maximize the formed water resistance area and the formed water flowing area.
4. The BIM technology-based sewage treatment operation and maintenance device according to claim 2, wherein the geometrical frame (201) on the choke intercepting shelf assembly (2) is provided with a protruding part on the back side, and the protruding part is tangent to the cutting edge of the blade (108).
5. A BIM technology based sewage treatment operation and maintenance device according to claim 4, wherein the protruding portion is provided with at least one grinding sheet (203), and the grinding sheet (203) is tangential to the edge and mouth portion of the blade (108).
6. The BIM technology-based sewage treatment operation and maintenance device according to claim 5, wherein a corrugated plate (103) is arranged on one side of the cutting edge of the blade (108), concave-convex parts (109) are arranged on the surface of the corrugated plate (103), and the concave-convex parts (109) are tangential to the grinding sheet (203).
7. The BIM technology-based sewage treatment operation and maintenance device according to claim 6, wherein the concave-convex part (109) is of a W-shaped structure, and is used for clamping and winding linear garbage.
8. The BIM technology-based sewage treatment operation and maintenance device according to claim 1, wherein a through groove is formed in the blade (108), and a cutting knife (105) is movably arranged in the through groove to cut the concave-convex part (109) to wind garbage.
9. The BIM technology-based sewage treatment operation and maintenance device according to claim 8, wherein the cutting knife (105) is of a double-blade structure, and the cutting knife (105) is driven to reciprocate by the circumferential rotation of the rotary cutting knife assembly (1).
10. The BIM technology-based sewage treatment operation and maintenance device according to claim 9, wherein the cutting knife (105) is driven by water flow to keep rotating to be tangent to the concave-convex part (109) of the corrugated plate (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054133.1A CN114197611B (en) | 2022-01-18 | 2022-01-18 | Sewage treatment operation and maintenance device based on BIM technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054133.1A CN114197611B (en) | 2022-01-18 | 2022-01-18 | Sewage treatment operation and maintenance device based on BIM technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114197611A true CN114197611A (en) | 2022-03-18 |
| CN114197611B CN114197611B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210054133.1A Active CN114197611B (en) | 2022-01-18 | 2022-01-18 | Sewage treatment operation and maintenance device based on BIM technology |
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| Country | Link |
|---|---|
| CN (1) | CN114197611B (en) |
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| CN214402099U (en) * | 2021-01-29 | 2021-10-15 | 王志华 | Building plumbing is with preventing blockking up structure based on BIM |
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2022
- 2022-01-18 CN CN202210054133.1A patent/CN114197611B/en active Active
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| US20110283472A1 (en) * | 2010-05-24 | 2011-11-24 | Sherwood Leland J | Sink drain debris clearing implement |
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| CN111173087A (en) * | 2020-02-13 | 2020-05-19 | 浙江水利水电学院 | Novel high-rise building blow off pipe |
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| CN114197611B (en) | 2024-05-17 |
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