CN219449396U - Ground box type rainwater treatment integrated machine - Google Patents
Ground box type rainwater treatment integrated machine Download PDFInfo
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- CN219449396U CN219449396U CN202320642963.6U CN202320642963U CN219449396U CN 219449396 U CN219449396 U CN 219449396U CN 202320642963 U CN202320642963 U CN 202320642963U CN 219449396 U CN219449396 U CN 219449396U
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- rainwater
- pipeline
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- self
- box body
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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Abstract
The utility model discloses an overground box type rainwater treatment integrated machine, which comprises a processor box body arranged on the ground, wherein a treatment pipeline which is communicated with a rainwater collecting tank is arranged in the processor box body, a self-cleaning filter, an ultraviolet sterilizer and a high-pressure lifting pump are sequentially arranged on the treatment pipeline along the flowing direction of rainwater, the self-cleaning filter, the ultraviolet sterilizer and the high-pressure lifting pump are arranged side by side along the horizontal direction and are positioned at the middle position in the processor box body along the vertical direction, a coarse filter core and a fine filter screen which are sequentially used for filtering large particle impurities and small particle impurities in the rainwater are arranged on the self-cleaning filter, a disinfection cavity through which the rainwater passes is arranged on the ultraviolet sterilizer, an ultraviolet lamp which is used for irradiating the rainwater and sterilizing the rainwater is arranged in the disinfection cavity, a water outlet pipeline is communicated with the high-pressure lifting pump, and the water outlet pipeline extends out of the processor box body and is communicated with a greening pipeline, so that the rainwater can be precisely treated, disinfected and sterilized, and natural fresh water resources can be fully utilized.
Description
Technical Field
The utility model relates to the technical field of rainwater treatment equipment, in particular to an overground box type rainwater treatment integrated machine.
Background
In the comprehensive utilization system of the rainwater, the collected rainwater is simply and naturally precipitated and filtered, so that the rainwater cannot be accurately treated, and the natural precipitation and filtration rainwater contains microorganisms, bacteria and sediment and finally cannot be fully applied.
Disclosure of Invention
The utility model aims to provide an overground box type rainwater treatment integrated machine, which solves the problems in the prior art, can precisely treat rainwater, disinfect and sterilize, and can fully utilize natural fresh water resources.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides an all-in-one machine for treating ground box type rainwater, which comprises a processor box body arranged on the ground, wherein a treatment pipeline communicated with a rainwater collecting tank is arranged in the processor box body, a self-cleaning filter, an ultraviolet sterilizer and a high-pressure lifting pump are sequentially arranged on the treatment pipeline along the flowing direction of the rainwater, the self-cleaning filter, the ultraviolet sterilizer and the high-pressure lifting pump are arranged side by side along the horizontal direction and are positioned at the middle position in the processor box body along the vertical direction, a coarse filter core and a fine filter screen for sequentially filtering large-particle impurities and small-particle impurities in the rainwater are arranged on the self-cleaning filter, a disinfection cavity for the rainwater to pass through is arranged on the ultraviolet sterilizer, an ultraviolet lamp for irradiating the rainwater and sterilizing the rainwater is arranged in the disinfection cavity, and a water outlet end of the high-pressure lifting pump is communicated with a water outlet pipeline which extends out of the processor box body and is communicated with a garden greening pipeline.
Preferably, the self-cleaning filter is provided with a drain outlet, and the drain outlet is communicated with a drain pipeline extending out of the box body of the processor.
Preferably, the ultraviolet lamp comprises a lamp body for emitting ultraviolet rays, and a transparent waterproof cover for allowing the ultraviolet rays to pass through is covered on the outer periphery side of the lamp body.
Preferably, the processor box is provided with a waterproof supporting seat, and the processor box is arranged at the top of the waterproof supporting seat and forms a space with the ground for preventing rainwater from corroding the inside of the processor box.
Preferably, the side wall of the processor box is symmetrically provided with a plurality of rows of ventilation openings, the top of each ventilation opening in each row is provided with a rain shield, one end of the rain shield is connected to the side wall of the processor box, and the other end of the rain shield extends towards the direction far away from the processor box and gradually inclines downwards.
Preferably, the top cover of the processor box is provided with a rain cover, and the peripheral edge of the rain cover extends out of the processor box in the radial direction and surrounds the peripheral side of the processor box.
Preferably, the treatment pipeline comprises a water inlet pipeline communicated between the rainwater collecting tank and the self-cleaning filter, a back flushing pipeline is bypassed on the water inlet pipeline, the back flushing pipeline extends out of the box body of the treatment tank and is communicated with the rainwater collecting tank, and electromagnetic valves are arranged on the water inlet pipeline and the back flushing pipeline between the inlet of the back flushing pipeline and the self-cleaning filter.
Preferably, the outlet of the back flushing pipeline is correspondingly arranged at the bottom of the inner side of the rainwater collecting tank, and is arranged at the inner wall of the rainwater collecting tank, and the axis of the outlet of the back flushing pipeline is parallel to the tangent line of the inner wall of the rainwater collecting tank.
Preferably, the high-pressure lift pump is a variable-frequency high-pressure lift pump, and the water outlet pipeline is provided with a remote pressure gauge electrically connected with the feedback of the high-pressure lift pump.
Preferably, a water accumulation part for collecting leaked rainwater is arranged at the bottom of the inner side of the processor box body, the self-cleaning filter, the ultraviolet sterilizer and the high-pressure lifting pump are all arranged above the water accumulation part, and an overflow port for rainwater to overflow out of the processor box body is formed in the water accumulation part.
Compared with the prior art, the utility model has the following technical effects:
firstly, in pumping into the treatment line with the rainwater through the high-pressure elevator pump, through self-cleaning filter earlier, utilize its coarse filter core and thin filter screen to fully filter the impurity in the rainwater, the ultraviolet ray that the reuse ultraviolet ray sterilizer provided disinfects the rainwater of filtering, the rainwater after handling, directly is linked together with afforestation pipeline, makes natural fresh water resource obtain make full use of.
Second, be equipped with the drain on the self-cleaning filter, the drain intercommunication has the drain that stretches out the processor box, is linked together the drain and the drain of self-cleaning filter, can directly discharge the processor box through the drain with impurity such as silt that its separation was out, has guaranteed the inside cleanness of processor box, and avoids the influence of impurity such as silt to each equipment mechanism.
Third, ultraviolet lamp is including the lamp body that is used for sending the ultraviolet ray, and the periphery side cover of lamp body is equipped with the transparent waterproof cover that supplies the ultraviolet ray to pass, sends the ultraviolet ray through the lamp body of ultraviolet lamp to shine the rainwater after filtering, realize its bactericidal effect, and form the water-proof effects to the lamp body through transparent waterproof cover, prolong its life.
Fourth, the supporting waterproof supporting seat that has of processor box to form between processor box and ground and prevent its inside interval of rainwater erosion, avoid in the rainfall in-process, the ponding of ground is too much, and the rainwater gets into inside the processor box easily, has guaranteed the inside dryness of processor box, has prolonged the life of its inside each equipment mechanism.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of the overall structure of the present utility model;
FIG. 2 is a side view of the overall structure of the present utility model;
wherein, 1-PLC electrical system, 2-self-cleaning filter, 3-solenoid valve, 4-treatment pipeline, 5-back flush pipeline, 6-outlet conduit, 7-ultraviolet ray sterilizer, 8-teletransmission manometer, 9-blow off pipeline, 10-rain cover, 11-vent, 12-waterproof supporting seat.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide an overground box type rainwater treatment integrated machine, which solves the problems in the prior art, can precisely treat rainwater, disinfect and sterilize, and can fully utilize natural fresh water resources.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 2, the present embodiment provides an above-ground tank type rainwater treatment integrated machine, including a processor box installed on the ground, which leaves the factory to be a formed box, is integrally hoisted when installed, the processor box is installed on the ground, which is convenient for the maintenance of workers on the processor box, and the like, preferably the processor box adopts a hot rolled plate SHCC box to improve the overall structural strength and corrosion resistance, has a small volume, a length of 1.5 meters, a width of 0.8 meters, a height of 1.5 meters, a small occupied space, and easy layout, is provided with a treatment pipeline 4 communicated with a rainwater collection tank in the processor box, wherein the rainwater collection tank is arranged below the ground, so that accumulated water on the ground can quickly flow into the rainwater collection tank for temporary storage after rainfall, and the rainwater is first concentrated into the rainwater collection tank for storage by the processor box, the situation that rainwater is not timely processed by the processor box body, the rainwater on the ground volatilizes or runs off after the rainwater is processed, the rainwater processing capacity is insufficient, the self-cleaning filter 2, the ultraviolet sterilizer 7 and the high-pressure lift pump are sequentially arranged on the processing pipeline 4 along the rainwater flowing direction, preferably, the processing precision of the self-cleaning filter 2 is 100 mu m, the self-cleaning filter 2, the ultraviolet sterilizer 7 and the high-pressure lift pump are arranged side by side along the horizontal direction and are positioned at the middle position in the processor box body along the vertical direction, wherein the processor box body is also provided with the PLC electric control system 1 for electrically controlling the self-cleaning filter 2, the ultraviolet sterilizer 7 and the high-pressure lift pump, and providing power for all devices in the processor box body, the PLC electric control system 1 is positioned at the upper position of the self-cleaning filter 2, the ultraviolet sterilizer 7 and the high-pressure lift pump, in order to avoid above-mentioned equipment to appear leaking when the condition such as the like, lead to the fact the corruption damage to PLC electrical system 1 easily, be equipped with on the self-cleaning filter 2 in proper order to big granule impurity and little granule impurity filterable coarse filter core and the thin filter screen in the rainwater, be equipped with the disinfection chamber that supplies the rainwater to pass through on the ultraviolet ray disinfection ware 7, the disinfection intracavity is equipped with and is used for shining the rainwater and disinfects its ultraviolet lamp, the water outlet end intercommunication of high-pressure elevator pump has outlet conduit 6, outlet conduit 6 stretches out the processor box and is linked together with afforestation pipeline. The rainwater is pumped into the treatment pipeline 4 through the high-pressure lifting pump, firstly, impurities in the rainwater are sufficiently filtered through the self-cleaning filter 2 by utilizing the coarse filter core and the fine filter screen, then the filtered rainwater is sterilized by utilizing ultraviolet rays provided by the ultraviolet sterilizer 7, and the treated rainwater is directly communicated with a landscaping pipeline, so that natural fresh water resources can be fully utilized.
It is further preferable to provide a pipe opening at the bottom of the box body of the processor, and the processing pipe 4 and the water outlet pipe 6 are led in and led out through the pipe opening, so that on one hand, unified management and maintenance are easy, and on the other hand, each pipe is pre-buried underground, so that the damage caused by external factors to the ground surface is prevented. And the treatment pipeline 4 and the water outlet pipeline 6 in the processor box body are connected by adopting 1.6Mpa-PPRdn75 pipeline hot melting.
Wherein, be equipped with the drain on the self-cleaning filter 2, the drain intercommunication has the drain 9 that stretches out the processor box, is linked together drain and drain 9 of self-cleaning filter 2, can directly discharge the processor box through drain 9 with impurity such as silt that its separation was out, has guaranteed the inside cleanness of processor box, and avoids impurity such as silt to each equipment mechanism's influence.
Further, rainwater enters the self-cleaning filter 12 from the water inlet of the self-cleaning filter 12, firstly, impurities with larger particles are filtered out through the coarse filter element assembly, then, the impurities reach the fine filter screen, after the impurities with the fine particles are filtered out through the fine filter screen, clear water is discharged from the water outlet of the self-cleaning filter 12. During the filtering process, the impurities in the inner layer of the fine filter screen are gradually accumulated, and a pressure difference is formed between the inner side and the outer side of the fine filter screen. When this pressure difference reaches a preset value, the automatic cleaning process will start: the blow-down valve is opened, and the hydraulic motor chamber and the hydraulic cylinder of the main pipe assembly release pressure and discharge water; the pressure in the hydraulic motor chamber and the sewage suction pipe is greatly reduced, sewage on the inner wall of the fine filter screen is sucked by the suction nozzle under the action of negative pressure, flows into the hydraulic motor chamber by the hydraulic motor, and is discharged by the sewage discharge valve, so that a sewage suction process is formed. When water flows through the hydraulic motor, the sewage suction pipe is driven to rotate, the sewage suction pipe is driven by the hydraulic cylinder piston to axially move, and the inner surface of the whole filter screen is completely cleaned by the sewage suction assembly through the combination of the axial movement and the rotary movement. The entire cleaning process will last for tens of seconds. The blowdown valve closes at the end of the wash and the increased water pressure returns the hydraulic cylinder piston to its original position, ready for the next wash cycle from the start of cleaning the filter 12. During the cleaning process, the normal filtering operation of the self-cleaning filter 12 is uninterrupted.
Moreover, ultraviolet lamp is including the lamp body that is used for sending the ultraviolet ray, and the periphery side cover of lamp body is equipped with the transparent waterproof cover that supplies the ultraviolet ray to pass, sends the ultraviolet ray through the lamp body of ultraviolet lamp to shine the rainwater after filtering, realize its bactericidal effect, and form the water-proof effects to the lamp body through transparent waterproof cover, prolong its life.
As the preferred embodiment of the utility model, the water-proof supporting seat 12 is matched with the processor box body, the processor box body is arranged at the top of the water-proof supporting seat 12, and a space for preventing rainwater from corroding the interior of the processor box body is formed between the processor box body and the ground, so that excessive ground water is prevented from accumulating in the rainfall process, the rainwater easily enters the interior of the processor box body, the dryness of the interior of the processor box body is ensured, and the service life of each equipment mechanism in the processor box body is prolonged. The waterproof supporting seat 12 is preferably an anti-corrosion channel steel base, has the height of 10cm, can effectively prevent corrosion of rainwater to the processor box body, and can ensure the supporting strength to the processor box body.
Further, a plurality of rows of ventilation openings 11 are symmetrically formed in the side wall of the processor box body, air drying in equipment is guaranteed, equipment is prevented from being affected with damp and aged, the top of each ventilation opening 11 in each row is provided with a rain shield, one end of the rain shield is connected to the side wall of the processor box body, the other end of the rain shield extends towards the direction away from the processor box body and gradually inclines downwards, so that rainwater is prevented from entering the processor box body from the ventilation openings 11, and corrosion is caused to internal equipment of the processor box body.
And the top cover of processor box is equipped with and hides rain cover 10, hides the peripheral reason of rain cover 10 and stretches out the processor box along radial to encircle in the periphery side of processor box, so that whole processor box receives the shielding effect that hides rain cover 10, fully avoids the rainwater erosion.
Preferably, the treatment pipeline 4 comprises a water inlet pipeline communicated between the rainwater collecting tank and the self-cleaning filter 2, a back flushing pipeline 5 is bypassed on the water inlet pipeline, the back flushing pipeline 5 extends out of the box body of the treatment machine and is communicated with the rainwater collecting tank, and electromagnetic valves 3 are arranged on the water inlet pipeline positioned between the inlet of the back flushing pipeline 5 and the self-cleaning filter 2 and the back flushing pipeline 5. When the ground control cabinet starts back flushing, the electromagnetic valve 3 on the water inlet pipeline is automatically closed, the electromagnetic valve 3 on the back flushing pipeline 5 is automatically opened, the high-pressure back flushing function in the rainwater collecting tank is realized, the back flushing function is closed, the electromagnetic valve 3 on the water inlet pipeline is automatically opened, and the electromagnetic valve 3 on the back flushing pipeline 5 is automatically closed, so that the raw water function is realized for the equipment. The collecting tank is regularly washed, so that excessive sludge is prevented from influencing the collection amount of the collecting tank. Preferably, the collecting tank is communicated with a water pumping set so as to pump the flushed muddy water out of the collecting tank through the water pumping set.
Further, the outlet of the back flush pipeline 5 is correspondingly arranged at the bottom of the inner side of the rainwater collecting tank and is arranged at the inner wall of the rainwater collecting tank, and the axis of the outlet of the back flush pipeline 5 is parallel to the tangent line of the inner wall of the rainwater collecting tank, so that in the back flush process, the back flush water flow can enter the rainwater collecting tank along the tangent line direction and form vortex at the bottom of the rainwater collecting tank, the back flush effect on the rainwater collecting tank is finished to the greatest extent, and the cleanliness of the rainwater collecting tank is fully ensured.
Moreover, the high-pressure lift pump adopts a variable-frequency high-pressure lift pump, and the water outlet pipeline 6 is provided with a remote pressure gauge 8 electrically connected with the feedback of the high-pressure lift pump, and the remote pressure gauge 8 is electrically connected with the PLC electric control system 1, so that the variable-frequency pressurizing parameters of the high-pressure lift pump can be set according to the reuse pressure, the variable-frequency water supply of the water pump is realized, and the water pressure condition can be observed at any time. And preferably, the treated rainwater is communicated with the landscaping pipeline through a water outlet pipeline 6, and a check valve is arranged in the water outlet pipeline 6 to prevent the original sprinkling irrigation water in the landscaping pipeline from flowing backwards.
Further, the inboard bottom of processor box is equipped with the ponding portion that is used for gathering leaking rainwater, preferential ponding portion is recess column structure, self-cleaning filter 2, ultraviolet sterilizer 7 and high pressure elevator pump all set up in the top of ponding portion, and ponding portion department has seted up the overflow mouth that supplies the rainwater to overflow out the processor box, then if the condition that the rainwater leaked appears, accomplish the gathering to revealing the rainwater through ponding portion, avoid its overflow to corrode the inside equipment of processor box, and discharge fast through setting up the rainwater in the ponding portion, guaranteed the dryness of processor box.
The adaptation to the actual need is within the scope of the utility model.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (10)
1. The utility model provides a box rainwater treatment all-in-one on the ground, its characterized in that, including installing at subaerial processor box, be equipped with the treatment pipeline that is linked together with the rainwater collecting tank in the processor box, be equipped with self-cleaning filter, ultraviolet ray disinfection ware and high pressure elevator pump on the treatment pipeline in proper order along the direction that the rainwater flows, self-cleaning filter ultraviolet ray disinfection ware with high pressure elevator pump sets up side by side along the horizontal direction, and is located along vertical direction the middle part position department in the processor box, be equipped with on the self-cleaning filter in proper order to big granule impurity and the filterable coarse filtration core of granule impurity and the fine filter screen of rainwater, be equipped with the disinfection chamber that supplies the rainwater to pass through on the ultraviolet ray disinfection ware, be equipped with the ultraviolet lamp that is used for shining the rainwater and disinfect to it on the disinfection chamber, the play water end intercommunication of high pressure elevator pump has outlet pipe, outlet pipe stretches out the processor box and is linked together with garden greening pipeline.
2. The above-ground box type rainwater treatment integrated machine according to claim 1, wherein a drain outlet is formed in the self-cleaning filter, and a drain pipe extending out of the processor box body is communicated with the drain outlet.
3. The above-ground tank type rainwater treatment integrated machine according to claim 2, wherein the ultraviolet lamp comprises a lamp body for emitting ultraviolet rays, and a transparent waterproof cover through which the ultraviolet rays pass is covered on the outer peripheral side of the lamp body.
4. A ground box type rainwater treatment integrated machine according to any one of claims 1 to 3, wherein the processor box is provided with a waterproof supporting seat, and the processor box is arranged on the top of the waterproof supporting seat and forms a space with the ground for preventing rainwater from corroding the interior of the processor box.
5. The ground tank type rainwater treatment integrated machine according to claim 4, wherein a plurality of rows of ventilation openings are symmetrically formed in the side wall of the processor box body, a rain shielding plate is arranged at the top of each ventilation opening in each row, one end of the rain shielding plate is connected to the side wall of the processor box body, and the other end of the rain shielding plate extends in a direction away from the processor box body and gradually inclines downwards.
6. The above-ground tank type rainwater treatment integrated machine according to claim 5, wherein the top cover of the processor box is provided with a rain cover, and the peripheral edge of the rain cover extends out of the processor box in the radial direction and surrounds the peripheral side of the processor box.
7. The above-ground tank type rainwater treatment integrated machine according to claim 6, wherein the treatment pipeline comprises a water inlet pipeline communicated between the rainwater collection tank and the self-cleaning filter, a backwash pipeline is bypassed on the water inlet pipeline, the backwash pipeline extends out of the treatment tank and is communicated with the rainwater collection tank, and electromagnetic valves are arranged on the water inlet pipeline and the backwash pipeline between the backwash pipeline inlet and the self-cleaning filter.
8. The above-ground tank type rainwater treatment integrated machine according to claim 7, wherein the outlet of the back flushing pipeline is correspondingly arranged at the bottom of the inner side of the rainwater collection tank and is arranged at the inner wall of the rainwater collection tank, and the axis of the outlet of the back flushing pipeline is parallel to the tangent line of the inner wall of the rainwater collection tank.
9. The ground tank type rainwater treatment integrated machine according to claim 8, wherein the high-pressure lifting pump is a variable-frequency high-pressure lifting pump, and the water outlet pipeline is provided with a remote pressure gauge electrically connected with the feedback of the high-pressure lifting pump.
10. The ground tank type rainwater treatment integrated machine according to claim 9, wherein a water accumulation part for accumulating leaked rainwater is arranged at the bottom of the inner side of the processor box body, the self-cleaning filter, the ultraviolet sterilizer and the high-pressure lifting pump are all arranged above the water accumulation part, and an overflow port for rainwater to overflow out of the processor box body is formed in the water accumulation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642963.6U CN219449396U (en) | 2023-03-24 | 2023-03-24 | Ground box type rainwater treatment integrated machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320642963.6U CN219449396U (en) | 2023-03-24 | 2023-03-24 | Ground box type rainwater treatment integrated machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219449396U true CN219449396U (en) | 2023-08-01 |
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ID=87386560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320642963.6U Active CN219449396U (en) | 2023-03-24 | 2023-03-24 | Ground box type rainwater treatment integrated machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219449396U (en) |
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2023
- 2023-03-24 CN CN202320642963.6U patent/CN219449396U/en active Active
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