CN216953123U - Gas flue gas purification secondary waste heat recovery equipment - Google Patents
Gas flue gas purification secondary waste heat recovery equipment Download PDFInfo
- Publication number
- CN216953123U CN216953123U CN202220000948.7U CN202220000948U CN216953123U CN 216953123 U CN216953123 U CN 216953123U CN 202220000948 U CN202220000948 U CN 202220000948U CN 216953123 U CN216953123 U CN 216953123U
- Authority
- CN
- China
- Prior art keywords
- smoke box
- access door
- smoke
- box
- plate
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model provides a gas flue gas purification secondary waste heat recovery device, which comprises: the device comprises a smoke box, a smoke inlet, a first access door, a first through hole, a second through hole, a bearing plate, a plate type heat exchanger, a limiting plate, a water inlet pipe, a water outlet pipe, a nut, a second access door, a guide plate, a slag collection box, a filter screen, a slot, a slag outlet, a third access door, a fourth access door, an observation window and a smoke outlet; the top of the smoke box is provided with a smoke inlet, and the smoke inlet and the smoke box are in an integrated structure; the rear end of the top of the smoke box is hinged with a first access door through a hinge; a first through hole is formed in the upper left corner of the front end of the top of the smoke box, and a second through hole is formed in the lower right corner of the front end of the top of the smoke box; the gas flue gas purification secondary waste heat recovery device has the advantages of being simple in mounting structure, convenient to detach, clean and replace, and effectively solves the problems and the defects in the existing device.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery, in particular to secondary waste heat recovery equipment for gas flue gas purification.
Background
At present, the main problems of low utilization rate, poor economic benefit and high ecological environment pressure still exist in the energy utilization of China, the flue gas waste heat recovery, the energy conservation and emission reduction are realized, the comprehensive utilization rate of energy is improved, the method is a fundamental way for solving the energy problem of China, and is also a fundamental way for reducing the cost of a gas power station and improving the economic benefit.
Gas cleaning secondary waste heat recovery equipment is after using a period, and one deck dust can be adhered to on its inside heat exchanger surface, for guaranteeing heat exchange efficiency, needs regularly to clean the heat exchanger surface, and the mounting structure of heat exchanger is comparatively complicated, inconvenient dismantlement, and be not convenient for clean, and the mounting structure of filter screen is also comparatively complicated, the inconvenient filter screen of changing.
In view of this, research and improvement are carried out to solve the existing problems, and a secondary waste heat recovery device for gas flue gas purification is provided, aiming at achieving the purposes of solving the problems and improving the practical value through the technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a gas flue gas purification secondary waste heat recovery device to solve the problems and the defects in the background technology.
In order to achieve the purpose, the utility model provides a gas flue gas purification secondary waste heat recovery device, which is achieved by the following specific technical means:
the utility model provides a gas cleaning secondary waste heat recovery device, includes: the device comprises a smoke box, a smoke inlet, a first access door, a first through hole, a second through hole, a bearing plate, a plate type heat exchanger, a limiting plate, a water inlet pipe, a water outlet pipe, a nut, a second access door, a guide plate, a slag collection box, a filter screen, a slot, a slag outlet, a third access door, a fourth access door, an observation window and a smoke outlet; the top of the smoke box is provided with a smoke inlet, and the smoke inlet and the smoke box are in an integrated structure; the rear end of the top of the smoke box is hinged with a first access door through a hinge; a first through hole is formed in the upper left corner of the front end of the top of the smoke box, and a second through hole is formed in the lower right corner of the front end of the top of the smoke box; two bearing plates are welded on the left end of the top inside the smoke box and the right end of the top inside the smoke box respectively, and the two bearing plates on the left side and the two bearing plates on the right side are bilaterally symmetrical; the top of the interior of the smoke box is provided with a plate heat exchanger, and the plate heat exchanger is in clearance fit with the smoke box; limiting plates matched with the bearing plate are welded at the left end and the right end of the plate heat exchanger, and the limiting plates are placed at the top end of the bearing plate; a water inlet pipe is arranged on the right side of the bottom of the plate heat exchanger, one end of the water inlet pipe is welded on the right rear side of the bottom end of the plate heat exchanger, and the other end of the water inlet pipe penetrates through the second through hole to the outside of the smoke box from front to back; a water outlet pipe is welded at the left upper corner of the front end of the plate heat exchanger, and the water outlet pipe penetrates through the first through hole to the outside of the smoke box from front to back; the water outlet pipe and the water inlet pipe are respectively sleeved with a nut at one end penetrating to the outside of the smoke box, and the water outlet pipe and the water inlet pipe are respectively in threaded connection with the sleeved nuts; the front end of the bottom of the smoke box is hinged with a second access door through a hinge, and a guide plate is arranged behind the second access door; the guide plate is welded inside the smoke box; a slag collecting box is arranged at the rear side below the guide plate, and the slag collecting box and the smoke box are in an integrated structure; a filter screen is arranged between the front end of the slag collecting box and the rear end of the guide plate, and two ends of the filter screen are inserted into the inner sides of the slots; the left end and the right end of the slot inside the smoke box are respectively welded with a position; a slag outlet is formed in the rear end of the bottom of the slag collection box, and a third access door is arranged at the rear end of the slag outlet; the third access door is hinged with the smoke box through a hinge; a fourth access door is arranged above the third access door and hinged to the rear end of the smoke box through a hinge; an observation window is embedded in the middle positions of the fourth access door, the third access door and the second access door; the bottom of smoke box is equipped with the outlet flue, and outlet flue and smoke box establish the integral type structure.
As a further optimization of the technical scheme, the gas flue gas purification secondary waste heat recovery device provided by the utility model has the advantages that the outer pipe walls at the front ends of the water inlet pipe and the water outlet pipe are both provided with threads, and the threads are in threaded fit with the nuts.
As a further optimization of the technical scheme, the gas flue gas purification secondary waste heat recovery equipment comprises a nut and a smoke box which are movably connected, and a rubber pad is adhered to the rear end of the nut.
As a further optimization of the technical scheme, the guide plate of the secondary waste heat recovery device for gas flue gas purification is inclined with a high front part and a low back part.
As a further optimization of the technical scheme, the gas flue gas purification secondary waste heat recovery device has the advantages that the front end of the slag collecting box is inclined with a high front part and a low back part.
As a further optimization of the technical scheme, the gas flue gas purification secondary waste heat recovery device has the advantages that the filter screen is in an inclined shape with a low front part and a high back part, and the filter screen corresponds to the smoke outlet in the front and back.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the bearing plate and the limiting plate are arranged, the limiting plate is placed at the top end of the bearing plate, the water inlet pipe penetrates through the second through hole, the water outlet pipe penetrates through the first through hole, and the nuts arranged on the water inlet pipe and the water outlet pipe are movably connected with the smoke box, so that the plate type heat exchanger is simple in installation structure, convenient to disassemble and clean.
2. According to the utility model, the slots are arranged at the left end and the right end of the filter screen, and the fourth access door is arranged at the rear side of the filter screen, so that the filter screen is convenient to disassemble and replace.
3. The gas flue gas purification secondary waste heat recovery device has the advantages of being simple in installation structure, convenient to disassemble, clean and replace, and accordingly the problems and the defects in the background art are effectively solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention along line B-B;
FIG. 4 is a schematic view of a connection structure of a guide plate and a bearing plate according to the present invention;
FIG. 5 is a schematic view of the internal structure of the smoke box of the present invention;
FIG. 6 is a schematic view of the present invention in partial cutaway configuration;
FIG. 7 is a schematic view of a plate heat exchanger according to the present invention;
fig. 8 is a rear view of the nut of the present invention.
In the figure: the device comprises a smoke box 1, a smoke inlet 2, a first access door 3, a first through hole 4, a second through hole 5, a bearing plate 6, a plate heat exchanger 7, a limiting plate 8, a water inlet pipe 9, a water outlet pipe 10, a nut 11, a second access door 12, a guide plate 13, a slag collection box 14, a filter screen 15, a slot 16, a slag outlet 17, a third access door 18, a fourth access door 19, an observation window 20 and a smoke outlet 21.
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.
It is to be noted that, in the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as being fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 8, the present invention provides a specific technical embodiment of a secondary waste heat recovery device for gas flue gas purification:
the utility model provides a gas cleaning secondary waste heat recovery device, includes: the device comprises a smoke box 1, a smoke inlet 2, a first access door 3, a first through hole 4, a second through hole 5, a bearing plate 6, a plate heat exchanger 7, a limiting plate 8, a water inlet pipe 9, a water outlet pipe 10, a nut 11, a second access door 12, a guide plate 13, a slag collection box 14, a filter screen 15, a slot 16, a slag outlet 17, a third access door 18, a fourth access door 19, an observation window 20 and a smoke outlet 21; the top of the smoke box 1 is provided with a smoke inlet 2, and the smoke inlet 2 and the smoke box 1 are in an integrated structure; the rear end of the top of the smoke box 1 is hinged with a first access door 3 through a hinge; a first through hole 4 is formed in the upper left corner of the front end of the top of the smoke box 1, and a second through hole 5 is formed in the lower right corner of the front end of the top of the smoke box 1; two bearing plates 6 are respectively welded on the left end of the top inside the smoke box 1 and the right end of the top inside the smoke box 1, and the two bearing plates 6 on the left side and the two bearing plates 6 on the right side are bilaterally symmetrical; the top of the interior of the smoke box 1 is provided with a plate type heat exchanger 7, and the plate type heat exchanger 7 is in clearance fit with the smoke box 1; limiting plates 8 matched with the bearing plate 6 are welded at the left end and the right end of the plate heat exchanger 7, and the limiting plates 8 are placed at the top end of the bearing plate 6; a water inlet pipe 9 is arranged on the right side of the bottom of the plate heat exchanger 7, one end of the water inlet pipe 9 is welded on the right rear side of the bottom end of the plate heat exchanger 7, and the other end of the water inlet pipe 9 penetrates through the second through hole 5 to the outside of the smoke box 1 from front to back; a water outlet pipe 10 is welded at the left upper corner of the front end of the plate heat exchanger 7, and the water outlet pipe 10 penetrates through the first through hole 4 to the outside of the smoke box 1 from front to back; one end of the water outlet pipe 10 and one end of the water inlet pipe 9 penetrating to the outside of the smoke box 1 are both sleeved with a nut 11, and the water outlet pipe 10 and the water inlet pipe 9 are respectively in threaded connection with the nuts 11 sleeved with the water outlet pipe and the water inlet pipe 9; the front end of the bottom of the smoke box 1 is hinged with a second access door 12 through a hinge, and a guide plate 13 is arranged behind the second access door 12; the guide plate 13 is welded inside the smoke box 1; a slag collecting box 14 is arranged at the rear side below the guide plate 13, and the slag collecting box 14 and the smoke box 1 are in an integrated structure; a filter screen 15 is arranged between the front end of the slag collection box 14 and the rear end of the guide plate 13, and two ends of the filter screen 15 are inserted into the inner sides of the slots 16; the slots 16 are respectively welded at the left end and the right end inside the smoke box 1; a slag outlet 17 is formed in the rear end of the bottom of the slag collection box 14, and a third access door 18 is arranged at the rear end of the slag outlet 17; the third access door 18 is hinged with the smoke box 1 through a hinge; a fourth access door 19 is arranged above the third access door 18, and the fourth access door 19 is hinged to the rear end of the smoke box 1 through a hinge; an observation window 20 is embedded in the middle positions of the fourth access door 19, the third access door 18 and the second access door 12; the bottom of the smoke box 1 is provided with a smoke outlet 21, and the smoke outlet 21 and the smoke box 1 are of an integrated structure.
Specifically, referring to fig. 7, the outer walls of the front ends of the inlet pipe 9 and the outlet pipe 10 are both provided with threads, and the threads are in threaded fit with a nut 11, which is used to fix the inlet pipe 9 and the outlet pipe 10 on the smoke box 1.
Specifically, referring to fig. 6, the nut 11 is movably connected to the smoke box 1, and referring to fig. 8, a rubber pad is adhered to the rear end of the nut 11 for sealing to prevent smoke in the smoke box 1 from leaking out of the first through hole 4 or the second through hole 5.
Specifically, referring to fig. 2, the guide plate 13 is inclined in a manner that the front part is higher than the rear part.
Specifically, referring to fig. 2, the front end of the slag collection box 14 is inclined with a high front end and a low rear end.
Specifically, referring to fig. 2, the filter screen 15 is inclined in a shape that the front is lower and the rear is higher, and the filter screen 15 corresponds to the front and the rear of the smoke outlet 21, and the filter screen 15 is used for filtering smoke.
The method comprises the following specific implementation steps:
water enters the plate heat exchanger 7 from the water inlet pipe 9 and is discharged from the water outlet pipe 10, smoke enters the smoke box 1 from the smoke inlet 2 and exchanges heat with water in the plate heat exchanger 7, the smoke after heat exchange is downwards filtered by the filter screen 15 and then is discharged from the smoke box 1 from the smoke outlet 21, filtered sundries fall into the slag collecting box 14 for temporary storage and are subsequently led out from the slag outlet 17, when the filter screen 15 needs to be replaced, the fourth access door 19 is opened, the old filter screen 15 is drawn out from the slot 16 and the smoke box 1 is taken out from the fourth access door 19, a new filter screen 15 is inserted into the slot 16 again, when the plate heat exchanger 7 needs to be cleaned, the nut 11 is detached, the first access door 3 is opened, the plate heat exchanger 7 is taken out of the smoke box 1 from the first access door 3, after the cleaning is finished, the plate heat exchanger 7 is placed back into the smoke box 1 again, the limiting plate 8 is placed at the top end of the bearing plate 6, the water inlet pipe 9 penetrates through the second through hole 5, the water outlet pipe 10 penetrates through the first through hole 4, the nut 11 is connected with the water inlet pipe 9 and the water outlet pipe 10 in a threaded mode again and is screwed tightly, and the water inlet pipe 9 and the water outlet pipe 10 are fixed on the smoke box 1.
In summary, the following steps: according to the gas flue gas purification secondary waste heat recovery device, the bearing plate and the limiting plate are arranged, the limiting plate is placed at the top end of the bearing plate, the water inlet pipe penetrates through the second through hole, the water outlet pipe penetrates through the first through hole, and nuts arranged on the water inlet pipe and the water outlet pipe are movably connected with the smoke box, so that the plate type heat exchanger is simple in installation structure, convenient to disassemble and clean; the left end and the right end of the filter screen are provided with the slots, and the rear side of the filter screen is provided with the fourth access door, so that the filter screen is convenient to disassemble and replace; the gas flue gas purification secondary waste heat recovery device has the advantages of being simple in mounting structure, convenient to detach, clean and replace, and effectively solves the problems and the defects in the existing device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a gas cleaning secondary waste heat recovery device, includes: the device comprises a smoke box (1), a smoke inlet (2), a first access door (3), a first through hole (4), a second through hole (5), a bearing plate (6), a plate heat exchanger (7), a limiting plate (8), a water inlet pipe (9), a water outlet pipe (10), a nut (11), a second access door (12), a guide plate (13), a slag collection box (14), a filter screen (15), a slot (16), a slag outlet (17), a third access door (18), a fourth access door (19), an observation window (20) and a smoke outlet (21); the method is characterized in that: the top of the smoke box (1) is provided with a smoke inlet (2), and the smoke inlet (2) and the smoke box (1) are in an integrated structure; the rear end of the top of the smoke box (1) is hinged with a first access door (3) through a hinge; a first through hole (4) is formed in the upper left corner of the front end of the top of the smoke box (1), and a second through hole (5) is formed in the lower right corner of the front end of the top of the smoke box (1); two bearing plates (6) are respectively welded on the left end of the top inside the smoke box (1) and the right end of the top inside the smoke box (1), and the two bearing plates (6) on the left side and the two bearing plates (6) on the right side are bilaterally symmetrical; the top of the interior of the smoke box (1) is provided with a plate type heat exchanger (7), and the plate type heat exchanger (7) is in clearance fit with the smoke box (1); limiting plates (8) matched with the bearing plate (6) are welded at the left end and the right end of the plate heat exchanger (7), and the limiting plates (8) are placed on the top end of the bearing plate (6); a water inlet pipe (9) is arranged on the right side of the bottom of the plate heat exchanger (7), one end of the water inlet pipe (9) is welded on the right rear side of the bottom end of the plate heat exchanger (7), and the other end of the water inlet pipe (9) penetrates through the second through hole (5) to the outside of the smoke box (1) from front to back; a water outlet pipe (10) is welded at the upper left corner of the front end of the plate type heat exchanger (7), and the water outlet pipe (10) penetrates through the first through hole (4) to the outside of the smoke box (1) from front to back; the water outlet pipe (10) and the water inlet pipe (9) penetrate through one end of the outer part of the smoke box (1) and are sleeved with a nut (11), and the water outlet pipe (10) and the water inlet pipe (9) are respectively in threaded connection with the nuts (11) sleeved with the water outlet pipe and the water inlet pipe; the front end of the bottom of the smoke box (1) is hinged with a second access door (12) through a hinge, and a guide plate (13) is arranged behind the second access door (12); the guide plate (13) is welded inside the smoke box (1); a slag collecting box (14) is arranged on the rear side below the guide plate (13), and the slag collecting box (14) and the smoke box (1) are in an integrated structure; a filter screen (15) is arranged between the front end of the slag collection box (14) and the rear end of the guide plate (13), and two ends of the filter screen (15) are inserted into the inner sides of the slots (16); the left end and the right end of the slot (16) in the smoke box (1) are respectively welded with a position; a slag outlet (17) is formed in the rear end of the bottom of the slag collection box (14), and a third access door (18) is arranged at the rear end of the slag outlet (17); the third access door (18) is hinged with the smoke box (1) through a hinge; a fourth access door (19) is arranged above the third access door (18), and the fourth access door (19) is hinged to the rear end of the smoke box (1) through a hinge; an observation window (20) is embedded in the middle positions of the fourth access door (19), the third access door (18) and the second access door (12); the bottom of smoke box (1) is equipped with outlet (21), and outlet (21) and smoke box (1) establish the integral type structure.
2. The secondary waste heat recovery device for gas flue gas purification according to claim 1, wherein: the outer pipe wall at the front ends of the water inlet pipe (9) and the water outlet pipe (10) is provided with threads, and the threads are in threaded fit with the nuts (11).
3. The gas flue gas purification secondary waste heat recovery device of claim 1, characterized in that: the nut (11) is movably connected with the smoke box (1), and a rubber pad is adhered to the rear end of the nut (11).
4. The gas flue gas purification secondary waste heat recovery device of claim 1, characterized in that: the guide plate (13) is inclined with a high front part and a low back part.
5. The gas flue gas purification secondary waste heat recovery device of claim 1, characterized in that: the front end of the slag collection box (14) is in an inclined shape with a high front part and a low back part.
6. The gas flue gas purification secondary waste heat recovery device of claim 1, characterized in that: the filter screen (15) is in an inclined shape with a lower front part and a higher rear part, and the filter screen (15) corresponds to the smoke outlet (21) in the front and the rear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202220000948.7U CN216953123U (en) | 2022-01-04 | 2022-01-04 | Gas flue gas purification secondary waste heat recovery equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202220000948.7U CN216953123U (en) | 2022-01-04 | 2022-01-04 | Gas flue gas purification secondary waste heat recovery equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN216953123U true CN216953123U (en) | 2022-07-12 |
Family
ID=82315306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202220000948.7U Active CN216953123U (en) | 2022-01-04 | 2022-01-04 | Gas flue gas purification secondary waste heat recovery equipment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN216953123U (en) |
-
2022
- 2022-01-04 CN CN202220000948.7U patent/CN216953123U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN216953123U (en) | Gas flue gas purification secondary waste heat recovery equipment | |
CN217068147U (en) | Environment-friendly exhaust-gas treatment equipment of steam power plant | |
CN213825340U (en) | Impurity purification device for electrolyte | |
CN211977649U (en) | Conveniently-disassembled modular sewage heat exchanger | |
CN209978651U (en) | Industrial waste heat recovery device | |
CN215692131U (en) | Intelligent filtering device of heat exchange station | |
CN218188725U (en) | Exhaust treatment device is used in magnesium nitrate production | |
CN219244298U (en) | High-efficiency energy-saving smoke waste heat comprehensive utilization equipment | |
CN218740887U (en) | Wet type flue gas desulfurization dust remover | |
CN220047571U (en) | Circulated formula welding fume purifier | |
CN212215000U (en) | Building engineering construction dust collector | |
CN210845661U (en) | Cleaning device for air filter | |
WO2023231069A1 (en) | Boiler waste gas treatment equipment | |
CN215506072U (en) | Dust collector for construction | |
CN214950766U (en) | Waste heat recovery device for boiler | |
CN210461997U (en) | High-efficiency environment-friendly energy-saving silencing air pipe | |
CN220287735U (en) | Clean energy heating device | |
CN211126509U (en) | Outdoor low-voltage power distribution cabinet | |
CN214913496U (en) | Retrieve purification and use rectifier unit with carbon dioxide | |
CN218179127U (en) | Building energy-saving air interchanger | |
CN213146945U (en) | Environment-friendly semi-coke heating stove | |
CN212512570U (en) | Natural ventilation type dry-wet combined cooling tower | |
CN215855418U (en) | Municipal administration low-lying area rainwater is collected, is extracted filtration processing system | |
CN213693597U (en) | Based on photovoltaic power generation panel belt cleaning device | |
CN214546215U (en) | Environment-friendly water conservancy irrigation device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |