CN216457375U - Interior influent stream grid belt cleaning device - Google Patents
Interior influent stream grid belt cleaning device Download PDFInfo
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- CN216457375U CN216457375U CN202122976998.7U CN202122976998U CN216457375U CN 216457375 U CN216457375 U CN 216457375U CN 202122976998 U CN202122976998 U CN 202122976998U CN 216457375 U CN216457375 U CN 216457375U
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Abstract
The utility model discloses an internal inflow grid cleaning device which comprises a clean water tank, a clean water pump, a pipeline mixer, a sodium hypochlorite dosing tank, a citric acid dosing tank, a sodium hypochlorite dosing pump, a citric acid dosing pump, an uplink pre-spraying pipe, a downlink pre-spraying pipe, an uplink soaking spraying pipe, a downlink soaking spraying pipe, a first water inflow electromagnetic valve, a first control electromagnetic valve, a second control electromagnetic valve and a third control electromagnetic valve. The utility model is provided with the pre-spraying pipe and the soaking spraying pipe, and the acid-base agent and the high-pressure water are used for washing the grid mesh plate inwards outside the grid mesh plate, so that the microorganisms hanging the membrane on the grid mesh plate can be thoroughly killed and the scales can be removed.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to an efficient cleaning device for mixed pollutants of an internal inflow grating.
Background
The inner inflow grille is generally arranged in a water inlet channel at the foremost end of the sewage treatment system, and the grille screen plate reciprocates from bottom to top in a vertical plane and is used for continuously and automatically intercepting inflow impurities, so that system equipment and pipelines behind the grille are protected from being blocked. After the internal inflow grid is used for a period of time, a large amount of pollutants can be adsorbed on the grid screen plate, the grid screen plate is seriously scaled and is hung with a thick biological film, the working efficiency of the grid screen plate is seriously reduced, and the grid is required to be cleaned at this time. The existing grating cleaning device is unsatisfactory in cleaning effect, incomplete in cleaning, short in cleaning period and low in grating use efficiency. For example, chinese patent CN213895324U discloses an internal inflow membrane grid cleaning device and system thereof. The device is provided with a high-pressure washing unit and a dosing unit which are matched, a washing pipeline of the high-pressure washing unit is sprayed and washed inwards from the outside of the grid mesh plate, and scale substances or film-hanging microorganisms of the grid mesh plate are killed by a medicament and cleaned at high pressure. However, this patent exists: the contact action time of the high-pressure water and the cleaning agent with the mixed pollutants is short, so that the removal efficiency of the mixed pollutants is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an internal inflow grille cleaning device.
The technical scheme adopted by the utility model is as follows:
an inner inflow grid cleaning device comprises a clean water tank, a clean water pump, a pipeline mixer, a sodium hypochlorite dosing tank, a citric acid dosing tank, a sodium hypochlorite dosing pump, a citric acid dosing pump, an upstream pre-spraying pipe, a downstream pre-spraying pipe, an upstream soaking spraying pipe and a downstream soaking spraying pipe;
the upstream pre-spraying pipe and the downstream pre-spraying pipe are arranged on the inner upper side of the inner inflow grille in parallel, a nozzle of the upstream pre-spraying pipe faces the inner inflow grille in the upstream process, and a nozzle of the downstream pre-spraying pipe faces the inner inflow grille in the downstream process; the upward soaking spray pipe and the downward soaking spray pipe are arranged at the lower side in the inner inflow grille in parallel, the nozzle of the upward soaking spray pipe faces the upward inner inflow grille, and the nozzle of the downward soaking spray pipe faces the downward inner inflow grille;
an inlet of the clean water pump is connected with an outlet of the clean water tank, an outlet of the clean water pump is respectively connected with a water inlet of the pipeline mixer through a first water inlet pipe, a first water inlet electromagnetic valve is arranged on the first water inlet pipe, an inlet of the sodium hypochlorite dosing pump is connected with an outlet of the sodium hypochlorite dosing tank, and an outlet of the sodium hypochlorite dosing pump is connected with a first dosing port of the pipeline mixer through a sodium hypochlorite dosing pipe; the inlet of the citric acid dosing pump is connected with the outlet of the citric acid dosing tank, and the outlet of the citric acid dosing pump is connected with the second dosing port of the pipeline mixer through a citric acid dosing pipe;
a water outlet of the pipeline mixer is respectively connected with a third water outlet pipe and a fourth water outlet pipe through a second water outlet pipe, the third water outlet pipe is provided with a first control electromagnetic valve, and the fourth water outlet pipe is provided with a second control electromagnetic valve; the third water outlet pipe is respectively connected with one end of the upstream pre-spraying pipe and one end of the downstream pre-spraying pipe through a fifth water outlet pipe, and the other ends of the upstream pre-spraying pipe and the downstream pre-spraying pipe are connected through a sixth water outlet pipe; the fourth water outlet pipe is respectively connected with one end of the ascending soaking spray pipe and one end of the descending soaking spray pipe through a seventh water outlet pipe, the other ends of the ascending soaking spray pipe and the descending soaking spray pipe are connected through an eighth water outlet pipe, the eighth water outlet pipe is connected with a sixth water outlet pipe through a ninth water outlet pipe, and a third control electromagnetic valve is arranged on the ninth water outlet pipe.
Furthermore, the upstream pre-spraying pipe is provided with nozzles with the aperture specification of 1.5-2.0 mm at equal intervals along the length direction of the pipe, and the downstream pre-spraying pipe is provided with nozzles with the aperture specification of 0.6-1.0 mm at equal intervals along the length direction of the pipe.
Furthermore, the upward pre-spraying nozzles are arranged in a single row from 15 degrees to 45 degrees horizontally and obliquely downward, and the downward pre-spraying nozzles are arranged in a single row from 15 degrees to 45 degrees horizontally and obliquely upward.
Furthermore, the upward soaking spray pipe and the downward soaking spray pipe are provided with nozzles with the aperture specification of 3.0-5.0 mm at equal intervals along the length direction of the pipes.
Furthermore, nozzles of the upward soaking spray pipe and the downward soaking spray pipe are horizontally, obliquely and downwards arranged in two rows at an angle of 15-45 degrees.
The utility model has the beneficial effects that:
1. the acid-base agent and the high-pressure water are used for washing the grid mesh plate inwards outside the grid mesh plate, so that the microorganisms for hanging the membrane on the grid mesh plate can be thoroughly killed and the scales can be removed.
2. And a pre-spraying pipeline is arranged, and pollutants on the flow grid screen plate are removed by primary spraying, so that the consumption of cleaning agents in the soaking and spraying stage is reduced.
3. And a soaking and spraying pipeline is arranged, and pollutants of the flow grid screen plate are thoroughly removed through secondary soaking.
Drawings
Fig. 1 is a schematic structural view of an internal flow grille cleaning device of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings and a preferred embodiment.
Referring to fig. 1, the present embodiment provides an internal inflow grille cleaning device, which includes a clean water tank 21, a clean water pump 22, a pipeline mixer 23, a sodium hypochlorite dosing tank 11, a citric acid dosing tank 12, a sodium hypochlorite dosing pump 13, a citric acid dosing pump 14, an upstream pre-shower 241, a downstream pre-shower 242, an upstream soaking shower 251, and a downstream soaking shower 252. The upstream pre-shower 241 and the downstream pre-shower 242 are arranged in parallel on the upper side of the interior of the inner inflow grille, the nozzles of the upstream pre-shower 241 face the inner inflow grille when ascending, and the nozzles of the downstream pre-shower 242 face the inner inflow grille when descending. The upward soaking shower pipe 251 and the downward soaking shower pipe 252 are arranged in parallel at the lower side of the inner inflow grille, the nozzle of the upward soaking shower pipe 251 faces the upward inner inflow grille, and the nozzle of the downward soaking shower pipe 252 faces the downward inner inflow grille.
An inlet of the clean water pump 22 is connected with an outlet of the clean water tank 21, an outlet of the clean water pump 22 is connected with a water inlet of the pipeline mixer 23 through a first water inlet pipe 1, and a first water inlet electromagnetic valve 31 is arranged on the first water inlet pipe 1; an inlet of a sodium hypochlorite dosing pump 13 is connected with an outlet of the sodium hypochlorite dosing tank 11, and an outlet of the sodium hypochlorite dosing pump 13 is connected with a first dosing port of the pipeline mixer 23 through a sodium hypochlorite dosing pipe; the inlet of the citric acid dosing pump 14 is connected with the outlet of the citric acid dosing tank 12, and the outlet of the citric acid dosing pump 14 is connected with the second dosing port of the pipeline mixer 23 through a citric acid dosing pipe.
The water outlet of the pipeline mixer 23 is connected with a third water outlet pipe 3 and a fourth water outlet pipe 4 through a second water outlet pipe 2, the third water outlet pipe 3 is provided with a first control electromagnetic valve 41, and the fourth water outlet pipe 4 is provided with a second control electromagnetic valve 42. The third water outlet pipe 3 is connected with one end of the upstream pre-spraying pipe 241 and one end of the downstream pre-spraying pipe 242 through a fifth water outlet pipe 5, the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 are arranged in parallel and located in the same horizontal plane, and the other end of the upstream pre-spraying pipe 241 and the other end of the downstream pre-spraying pipe 242 are connected through a sixth water outlet pipe 6.
The fourth water outlet pipe 4 is connected with one end of the ascending soaking spray pipe 251 and one end of the descending soaking spray pipe 252 through a seventh water outlet pipe 7 respectively, the ascending soaking spray pipe 251 and the descending soaking spray pipe 252 are arranged in parallel and are positioned in the same horizontal plane, the other ends of the ascending soaking spray pipe 251 and the descending soaking spray pipe 252 are connected through an eighth water outlet pipe 8, and the eighth water outlet pipe 8 is parallel to the seventh water outlet pipe 7 and is positioned in the same horizontal plane.
The eighth water outlet pipe 8 is connected with the sixth water outlet pipe 6 through a ninth water outlet pipe 9, and the ninth water outlet pipe 9 is provided with a third control electromagnetic valve 43.
Preferably, the upstream pre-spraying pipe 241 is provided with nozzles with a pore size of 1.5-2.0 mm at equal intervals along the length direction of the pipe, and the downstream pre-spraying pipe 242 is provided with nozzles with a pore size of 0.6-1.0 mm at equal intervals along the length direction of the pipe. When the inner inflow grid screen plate goes upwards, the concentration of mixed pollutants of the screen plate is higher, and the large-aperture high-flow upward spraying is beneficial to quickly removing the mixed pollutants; when the internal inflow grid screen plate goes down, the concentration of pollutants is lower because the screen plate is cleaned by upward spraying, and the downward spraying with small aperture and low flow rate is helpful for auxiliary removal of pollutants and saving cleaning agents.
Preferably, the upward pre-spraying nozzles can be horizontally arranged in a downward single row at an angle of 15-45 degrees, and the downward pre-spraying nozzles can be horizontally arranged in a upward single row at an angle of 15-45 degrees, so that the movement direction of the inner inflow grid mesh plate is different from the spraying direction of the cleaning agent, and the mixed pollutants are favorably fully contacted and reacted with the cleaning agent.
The upward soaking spray pipe 251 and the downward soaking spray pipe 252 are provided with nozzles with the aperture specification of 3.0-5.0 mm at equal intervals along the pipe length direction.
Preferably, the nozzles of the ascending soaking spray pipe 251 and the descending soaking spray pipe 252 can be horizontally and obliquely arranged in a downward double row at an angle of 15-45 degrees, so as to ensure quick medicine feeding and sufficient stirring in the soaking stage.
The working mode of the utility model is as follows:
(1) cutting off the water inlet of the inner inflow grid channel.
(2) Sodium hypochlorite pre-spraying stage
Open first water solenoid valve 31 and first control solenoid valve 41, start sodium hypochlorite and add medicine pump 13 and scavenging pump 22, the high concentration sodium hypochlorite in the sodium hypochlorite adds medicine jar 11 and mixes in pipe mixer 23 with the clear water in the belt cleaning device 21 for low concentration sodium hypochlorite washing medicament after, carry to the ascending shower 241 in advance and the descending shower 242 in advance through first control solenoid valve 41. In the ascending process of the inner inflow grid screen plate, the ascending pre-spraying pipe 241 sprays high-flow low-concentration cleaning agent on the inner inflow grid screen plate, and the mixed pollutants are fully contacted and reacted with the cleaning agent, so that the organic pollutants in the mixed pollutants can be quickly removed; in the descending process of the internal inflow grid mesh plate, the descending pre-spraying pipe 242 sprays low-flow low-concentration cleaning agent on the internal inflow grid mesh plate relatively, and the mixed pollutants are fully contacted and reacted with the cleaning agent, so that the cleaning agent can be saved while organic pollutants in the mixed pollutants are further and quickly removed. After the screen plate circulates for 3 weeks, the sodium hypochlorite pre-spraying stage is finished, and the sodium hypochlorite dosing pump 13 is stopped.
(3) Sodium hypochlorite pre-spray cleaning stage
Adjusting the cleaning pump 22 to a high flow mode, opening the third control electromagnetic valve 43, conveying clean water to the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 through the first control electromagnetic valve 41, conveying the clean water to the upstream soaking spraying pipe 251 and the downstream soaking spraying pipe 252 through the third control electromagnetic valve 43, transferring sodium hypochlorite medicaments remained in the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 to the upstream soaking spraying pipe 251 and the downstream soaking spraying pipe 252, and flowing into an inner inflow grid channel through corresponding nozzles to avoid mixing of the sodium hypochlorite medicaments and subsequent citric acid medicaments; after the pre-spray cleaning is finished, the cleaning pump 22 is closed, and the inner inflow grid channels are emptied, so that the reducing substances in the inflow water are prevented from consuming the cleaning agent.
The nozzle diameters of the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 are small, the flow rate is small, if the washing is directly performed by using clean water, a large washing water amount and a long washing time are consumed, otherwise, the washing is difficult to perform. By opening the third control solenoid valve 43, the residual chemicals are transferred to the upstream soaking shower 251 and the downstream soaking shower 252 with larger nozzles and larger flow, so that the upstream pre-shower 241 and the downstream pre-shower 242 can be cleaned.
(4) Sodium hypochlorite soaking spraying stage
And cutting off the water outlet of the channel of the inner inflow grating and stopping the operation of the grating. And opening the cleaning pump 22 and the second control electromagnetic valve 42, closing the first control electromagnetic valve 41 and the third control electromagnetic valve 43, adjusting the cleaning pump 22 to a high flow mode, and rapidly supplementing clear water to the internal inflow grid channel until the lowest point of the grid screen plate is submerged. Adjust purge pump 22 to low flow mode, start sodium hypochlorite dosing pump 13 to adjust sodium hypochlorite dosing pump 13 to high flow mode. The sodium hypochlorite dosing tank 11 conveys a high-concentration sodium hypochlorite cleaning agent to the upward soaking spray pipe 251 and the downward soaking spray pipe 252 through the second control electromagnetic valve 42, and the high-concentration sodium hypochlorite cleaning agent flows into the inner inflow grid channel after being contacted with the grid mesh plate again until the submerged grid mesh plate occupies 1/3 of the whole length of the grid mesh plate; and (3) after soaking for 30min, rotating the grating 1/3, and after soaking for 30min, rotating the grating 1/3 again, so that all grating screen plates are cleaned completely. The combination of the quick water inlet in the high-flow mode of the cleaning pump and the quick medicine inlet in the high-flow mode of the sodium hypochlorite dosing pump can shorten the soaking and dosing time.
(5) Sodium hypochlorite soaking and spraying cleaning stage
After the soaking is finished, the grating is opened to discharge water, the inner inflow grating channel is emptied, the grating and the cleaning pump 22 are started, clean water is conveyed to the upstream soaking spray pipe 251 and the downstream soaking spray pipe 252 through the second control electromagnetic valve 42, and sodium hypochlorite medicaments remained in the upstream soaking spray pipe and the downstream soaking spray pipe can be completely rinsed.
(6) Citric acid pre-spray stage
The first water inlet electromagnetic valve 31 and the first control electromagnetic valve 41 are opened, the citric acid dosing pump 14 and the cleaning pump 22 are started, and after the high-concentration citric acid cleaning agent in the citric acid dosing tank 12 and the clean water in the cleaning device 21 are mixed into the low-concentration citric acid cleaning agent in the pipeline mixer 23, the low-concentration citric acid cleaning agent is conveyed to the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 through the first control electromagnetic valve 41. In the ascending process of the inner inflow grid screen plate, the ascending pre-spraying pipe 241 sprays the cleaning agent with high flow onto the inner inflow grid screen plate, and the mixed pollutants are fully contacted and reacted with the cleaning agent, so that the organic pollutants in the mixed pollutants can be quickly removed; in the descending process of the internal inflow grid screen plate, the descending pre-spraying pipe 242 sprays the cleaning agent with low flow onto the internal inflow grid screen plate, the mixed pollutants are fully contacted and reacted with the cleaning agent, and the cleaning agent can be saved while the organic pollutants in the mixed pollutants are further and quickly removed. After the screen cycles for 3 weeks, the citric acid pre-spray phase is complete and the citric acid dosing pump 14 is stopped.
(7) Citric acid pre-spray cleaning stage
Adjusting the cleaning pump 22 to a high flow mode, opening the third control electromagnetic valve 43, conveying the clean water to the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 through the first control electromagnetic valve 41, conveying the clean water to the upstream soaking spraying pipe 251 and the downstream soaking spraying pipe 252 through the third control electromagnetic valve 43, transferring the citric acid medicament remained in the upstream pre-spraying pipe 241 and the downstream pre-spraying pipe 242 to the upstream soaking spraying pipe 251 and the downstream soaking spraying pipe 252, and flowing into the internal inflow grid channel through the corresponding nozzles to avoid mixing of the citric acid medicament and the sodium hypochlorite medicament for cleaning next time; after the pre-spray cleaning is finished, the cleaning pump 22 is closed, and the inner inflow grid channels are emptied, so that the reducing substances in the inflow water are prevented from consuming the cleaning agent.
(8) Citric acid soaking spraying stage
And cutting off the water outlet of the channel of the inner inflow grating and stopping the operation of the grating. And opening the cleaning pump 22 and the second control electromagnetic valve 42, closing the first control electromagnetic valve 41 and the third control electromagnetic valve 43, adjusting the cleaning pump 22 to a high flow mode, and rapidly supplementing clear water to the internal inflow grid channel until the lowest point of the grid screen plate is submerged. The purge pump 22 is adjusted to the low flow mode, the citric acid dosing pump 14 is turned on, and the citric acid dosing pump 14 is adjusted to the high flow mode. The citric acid dosing tank 12 conveys high-concentration citric acid cleaning agents to the upward soaking spray pipe 251 and the downward soaking spray pipe 252 through the second control electromagnetic valve 42, and the high-concentration citric acid cleaning agents flow into the inner inflow grid channels after being contacted with the grid mesh plates again until the submerged grid mesh plates occupy 1/3 of the whole length of the grid mesh plates; and (3) after soaking for 30min, rotating the grating 1/3, and after soaking for 30min, rotating the grating 1/3 again, so that all grating screen plates are cleaned completely. The combination of rapid water intake in the high-flow mode of the cleaning pump and rapid medicine intake in the high-flow mode of the citric acid dosing pump can shorten the soaking and dosing time.
(9) Citric acid soaking and spraying cleaning stage
After the soaking is finished, the channel of the inner inflow grille is emptied, the grille and the cleaning pump 22 are started, clean water is conveyed to the upstream soaking spray pipe 251 and the downstream soaking spray pipe 252 through the second control electromagnetic valve 42, and the citric acid medicament remained in the upstream soaking spray pipe and the downstream soaking spray pipe can be completely rinsed.
(10) And (4) stopping the cleaning pump 22 after cleaning is finished, closing the first water inlet electromagnetic valve 31, the first control electromagnetic valve 41 and the second control electromagnetic valve 42, and allowing the inner inflow grating channel to feed water, wherein the grating operates normally.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.
Claims (5)
1. An internal inflow grid cleaning device is characterized by comprising a clean water tank, a clean water pump, a pipeline mixer, a sodium hypochlorite dosing tank, a citric acid dosing tank, a sodium hypochlorite dosing pump, a citric acid dosing pump, an uplink pre-spraying pipe, a downlink pre-spraying pipe, an uplink soaking spraying pipe and a downlink soaking spraying pipe;
the upstream pre-spraying pipe and the downstream pre-spraying pipe are arranged on the inner upper side of the inner inflow grille in parallel, a nozzle of the upstream pre-spraying pipe faces the inner inflow grille in the upstream process, and a nozzle of the downstream pre-spraying pipe faces the inner inflow grille in the downstream process; the upward soaking spray pipe and the downward soaking spray pipe are arranged at the lower side in the inner inflow grille in parallel, the nozzle of the upward soaking spray pipe faces the upward inner inflow grille, and the nozzle of the downward soaking spray pipe faces the downward inner inflow grille;
an inlet of the clean water pump is connected with an outlet of the clean water tank, an outlet of the clean water pump is respectively connected with a water inlet of the pipeline mixer through a first water inlet pipe, and a first water inlet electromagnetic valve is arranged on the first water inlet pipe; an inlet of the sodium hypochlorite dosing pump is connected with an outlet of the sodium hypochlorite dosing tank, and an outlet of the sodium hypochlorite dosing pump is connected with a first dosing port of the pipeline mixer through a sodium hypochlorite dosing pipe; the inlet of the citric acid dosing pump is connected with the outlet of the citric acid dosing tank, and the outlet of the citric acid dosing pump is connected with the second dosing port of the pipeline mixer through a citric acid dosing pipe;
a water outlet of the pipeline mixer is respectively connected with a third water outlet pipe and a fourth water outlet pipe through a second water outlet pipe, the third water outlet pipe is provided with a first control electromagnetic valve, and the fourth water outlet pipe is provided with a second control electromagnetic valve; the third water outlet pipe is respectively connected with one end of the upstream pre-spraying pipe and one end of the downstream pre-spraying pipe through a fifth water outlet pipe, and the other ends of the upstream pre-spraying pipe and the downstream pre-spraying pipe are connected through a sixth water outlet pipe; the fourth water outlet pipe is respectively connected with one end of the ascending soaking spray pipe and one end of the descending soaking spray pipe through a seventh water outlet pipe, the other ends of the ascending soaking spray pipe and the descending soaking spray pipe are connected through an eighth water outlet pipe, the eighth water outlet pipe is connected with a sixth water outlet pipe through a ninth water outlet pipe, and a third control electromagnetic valve is arranged on the ninth water outlet pipe.
2. The cleaning device for the internal flow grille of claim 1, wherein the upstream pre-shower is provided with nozzles having a pore size of 1.5 to 2.0mm at equal intervals in the tube length direction, and the downstream pre-shower is provided with nozzles having a pore size of 0.6 to 1.0mm at equal intervals in the tube length direction.
3. The cleaning device for the internal inflow grid according to claim 2, wherein the upstream pre-spraying nozzles are arranged in a single row from 15 degrees to 45 degrees horizontally and obliquely downward, and the downstream pre-spraying nozzles are arranged in a single row from 15 degrees to 45 degrees horizontally and obliquely upward.
4. The cleaning device for the internal inflow grid according to claim 1, wherein the upward soaking shower pipe and the downward soaking shower pipe are provided with nozzles with an aperture size of 3.0-5.0 mm at equal intervals along the length direction of the pipes.
5. The internal inflow grate cleaning device according to claim 4, wherein the nozzles of the upward soaking shower pipes and the downward soaking shower pipes are horizontally inclined at an angle of 15-45 degrees and arranged in two rows downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976998.7U CN216457375U (en) | 2021-11-30 | 2021-11-30 | Interior influent stream grid belt cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122976998.7U CN216457375U (en) | 2021-11-30 | 2021-11-30 | Interior influent stream grid belt cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216457375U true CN216457375U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122976998.7U Active CN216457375U (en) | 2021-11-30 | 2021-11-30 | Interior influent stream grid belt cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216457375U (en) |
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2021
- 2021-11-30 CN CN202122976998.7U patent/CN216457375U/en active Active
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