CN215916554U - Online belt cleaning device of plate and frame filter press backward flow - Google Patents
Online belt cleaning device of plate and frame filter press backward flow Download PDFInfo
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- CN215916554U CN215916554U CN202121869996.1U CN202121869996U CN215916554U CN 215916554 U CN215916554 U CN 215916554U CN 202121869996 U CN202121869996 U CN 202121869996U CN 215916554 U CN215916554 U CN 215916554U
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Abstract
The utility model discloses a backflow online cleaning device of a plate-and-frame filter press, which comprises a mud speed reduction stirrer, a medicament speed reduction stirrer, a mud sedimentation tank, a cleaning tank, a filter press liquid collecting tank, a centrifugal pump, a valve, a liquid inlet pipeline, a liquid outlet pipeline, a backflow pipeline, a conveying belt and a plate-and-frame filter press, wherein the mud speed reduction stirrer is connected with the mud sedimentation tank; the liquid inlet pipeline is used for communicating the slurry sedimentation tank with a liquid inlet of the plate-and-frame filter press; the liquid outlet pipeline is used for communicating a liquid outlet of the plate-and-frame filter press with the filter pressing liquid collecting pool; the liquid outlet pipeline is provided with a branch which is communicated with the cleaning pool; a return pipeline is connected between the liquid inlet pipeline and the cleaning pool; centrifugal pumps are arranged at the liquid outlet positions of the slurry sedimentation tank, the cleaning tank and the filter pressing liquid collecting tank; when the normal working flow of sewage and backflow cleaning are realized through the matching of the pipeline and the valve, the equipment and the pipeline valve are directly switched to achieve the purpose of backflow cleaning, the filter cloth does not need to be detached, and the filter cloth does not need to be impacted reversely by high pressure.
Description
Technical Field
The utility model relates to the technical field of sludge dewatering equipment, in particular to a backflow online cleaning device for a plate and frame filter press.
Background
The plate-and-frame filter press is the first machine used for chemical dehydration. Although plate-and-frame filter presses generally operate intermittently, have large capital equipment investment and low filtering capacity, the plate-and-frame filter presses are still widely used in some sewage treatment directions due to the advantages of large filtering driving force, high solid content of filter cakes, clear filtrate, high solid recovery rate, low conditioning medicine consumption and the like.
In the process of plate and frame filter pressing, small-particle rock debris and other solid particles in slurry can cause filter cloth blockage of the plate and frame filter pressing, and at present, the conventional common plate and frame filter cloth is cleaned by adopting two cleaning modes of detachable filter cloth cleaning and non-detachable washing. The detachable filter cloth is mostly cleaned by soaking with a medicament and a cleaning agent, and the non-detachable filter cloth is mostly cleaned by high-pressure water cleaning; the disassembly and cleaning mode needs to disassemble the filter cloth after the plate-and-frame filter press is shut down; the high-pressure water cleaning easily causes overlarge impact on the filter cloth, reduces the service life of the filter cloth and influences the stable operation of equipment; therefore, the two cleaning modes have the defects of large workload and long consumed time, and easily influence the equipment and the stability of the equipment; the applicant has therefore solved the problems that arise in the actual cleaning, with a device for the on-line cleaning of the return flow of a filter press of the frame type, based on the above-mentioned problems.
The utility model has the following contents:
according to the defects of the prior art, the utility model provides the online cleaning device for the backflow of the plate-and-frame filter press, when the normal working flow of sewage and the backflow cleaning are realized through the matching of a pipeline and a valve, the equipment and the pipeline valve are directly switched, the purpose of backflow cleaning is achieved, the filter cloth is not required to be disassembled, the filter cloth is not required to be impacted reversely by high pressure, the purpose of improving the cleaning efficiency of the plate-and-frame filter press is achieved, and meanwhile, the filter cloth is not greatly impacted.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a backflow online cleaning device for a plate-and-frame filter press comprises a mud speed reduction stirrer, a medicament speed reduction stirrer, a mud sedimentation tank, a cleaning tank, a pressure filtrate collecting tank, a centrifugal pump, a valve, a liquid inlet pipeline, a liquid outlet pipeline, a backflow pipeline, a conveying belt and a plate-and-frame filter press; the liquid inlet pipeline is used for communicating the slurry sedimentation tank with a liquid inlet of the plate-and-frame filter press; the liquid outlet pipeline is used for communicating a liquid outlet of the plate-and-frame filter press with the filter pressing liquid collecting pool; the liquid outlet pipeline is provided with a branch which is communicated with the cleaning pool; a return pipeline is connected between the liquid inlet pipeline and the cleaning pool; centrifugal pumps are arranged at the liquid outlet positions of the slurry sedimentation tank, the cleaning tank and the filter press liquid collecting tank.
Preferably, the valves comprise a valve V1-a valve V11, wherein the valve V1 is arranged at the effluent position of the mud sedimentation tank; a valve V2, a valve V3 and a valve V8 are respectively arranged in each tee joint formed by one end of the return pipeline and the liquid inlet pipeline; the valve V8 limits the on-off of the return pipeline and the liquid inlet pipeline; the other end of the backflow pipeline is divided into two paths, one path is connected to the top of the cleaning pool, the other path is connected to the bottom of the cleaning pool, a valve V9 is arranged on the path connected to the top, and a valve V11 and a valve V10 are arranged on the path connected to the bottom; one end of the liquid outlet pipeline is communicated with a liquid outlet of the plate-and-frame filter press; the other end of the liquid outlet pipeline is divided into two paths, one path is communicated with the cleaning tank, a valve V7 is arranged at the communication position, the other path is communicated with the pressure filtrate collecting tank, and the two paths are controlled by a valve V4.
Preferably, the centrifugal pump at the mud sedimentation tank is arranged between the valve V1 and the valve V2; the centrifugal pump at the cleaning pool is arranged between a valve V10 and a valve V11; the centrifugal pump located in the pressure filtrate collecting tank is arranged between the valve V5 and the valve V6.
Preferably, the cleaning tank is added with an industrial oxalic acid medicament.
Preferably, a mud speed reduction stirrer is arranged above the mud sedimentation tank; and a medicament speed reduction stirrer is arranged above the cleaning pool.
Preferably, the centrifugal pump is a horizontal centrifugal pump.
Preferably, a slag outlet of the plate-and-frame filter press is provided with a conveying belt for receiving slag.
The utility model discloses a backflow online cleaning device of a plate-and-frame filter press, which has the following beneficial effects:
1. the on-off of the backflow pipeline and the liquid outlet pipeline is controlled by respective valves, and the automatic control is realized according to a cleaning mode or a normal mode, so that the operation is convenient and fast.
2. The industrial oxalic acid put in the cleaning pool is used for backflow cleaning of floccules above the filter cloth, high-pressure water washing is not needed, and water pressure impact on the filter cloth is avoided.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the connection relationship of the overall structure of the present invention.
In the figure, a mud speed-reducing stirrer 1, a medicament speed-reducing stirrer 2, a mud sedimentation tank 3, a cleaning tank 4, a pressure filtrate collecting tank 5, a centrifugal pump 6, a valve 7, a liquid inlet pipeline 8, a liquid outlet pipeline 9, a backflow pipeline 10, a conveying belt 11 and a plate and frame filter press 12.
The specific implementation mode is as follows:
as shown in fig. 1, a backflow online cleaning device for a plate and frame filter press 12 comprises a mud speed reduction stirrer 1, a medicament speed reduction stirrer 2, a mud sedimentation tank 3, a cleaning tank 4, a filtrate collection tank 5, a centrifugal pump 6, a valve 7, a liquid inlet pipeline 8, a liquid outlet pipeline 9, a backflow pipeline 10, a conveying belt 11 and a plate and frame filter press 12; the liquid inlet pipeline 8 is used for communicating the mud sedimentation tank 3 with a liquid inlet of the plate-and-frame filter press 12; a liquid outlet pipeline 9 is used for communicating a liquid outlet of the plate-and-frame filter press 12 with the filter press liquid collecting pool 5; a slag outlet of the plate-and-frame filter press 12 is provided with a conveying belt 11 for receiving slag; the liquid outlet pipeline 9 is provided with a branch which is communicated with the cleaning tank 4, and an industrial oxalic acid medicament is added in the cleaning tank 4; a return pipeline 10 is connected between the liquid inlet pipeline 8 and the cleaning tank 4; centrifugal pumps 6 are arranged at the liquid outlet positions of the slurry sedimentation tank 3, the cleaning tank 4 and the pressure filtrate collecting tank 5, and the centrifugal pumps 6 are horizontal centrifugal pumps 6; a mud speed-reducing stirrer 1 is arranged above the mud sedimentation tank 3; a medicament speed reduction stirrer 2 is arranged above the cleaning pool 4.
As shown in fig. 1, the valve 7 comprises a valve V1-a valve V11, wherein the valve V1 is arranged at the effluent position of the mud sedimentation tank 3; a valve V2, a valve V3 and a valve V8 are respectively arranged at each tee joint formed by one end of the return pipeline 10 and the liquid outlet pipeline 9; the valve V8 limits the on-off of the return pipeline 10 and the liquid outlet pipeline 9; the other end of the backflow pipeline 10 is divided into two paths, one path is connected to the top of the slurry cleaning pool 4, the other path is connected to the bottom of the cleaning pool 4, a valve V9 is arranged on the path connected to the top, and a valve V11 and a valve V10 are arranged on the path connected to the bottom; one end of the liquid outlet pipeline 9 is communicated with a liquid outlet of the plate-and-frame filter press 12; the other end of the liquid outlet pipeline 9 is divided into two paths, one path is communicated with the cleaning tank 4, a valve V7 is arranged at the communication position, the other path is communicated with the filtrate collecting tank 5, and the two paths are controlled by a valve V4; the centrifugal pump 6 positioned at the mud sedimentation tank 3 is arranged between the valve V1 and the valve V2; the centrifugal pump 6 positioned at the cleaning tank 4 is arranged between the valve V10 and the valve V11; the centrifugal pump 6 located in the filtrate collecting tank is arranged between the valve V5 and the valve V6. The above-mentioned fixing methods are all welded or screwed by means of the common technical means of those skilled in the art, if they are not separately described.
The working principle is as follows:
plate frame filter pressing slurry flow: opening a valve V1, a valve V2, a valve V3 and a valve V4, closing a valve V5, a valve V6, a valve V7, a valve V8, a valve V9, a valve V10 and a valve V11; after the mud is settled, supernatant enters a mud sedimentation tank 3, a mud speed reduction stirrer 1 is started, a centrifugal pump 6 at the mud sedimentation tank 3 is started after a plate and frame filter press 12 enters a feeding state, the filter press starts feeding, and the mud enters the filter press to be filtered and subjected to solid-liquid separation; the solid part is conveyed into a hopper from a slag outlet discharge belt, then the liquid part enters from a liquid outlet line 9, the liquid discharged by closing a valve 7V7 cannot enter a cleaning pool 4, flows in the direction of an opened valve 7V4, and finally enters a pressure filtrate collecting pool 5.
Adjusting the filter press to a cleaning state: opening the valve V3, the valve V7, the valve V8, the valve V10 and the valve V11, closing the other valves 7, starting the centrifugal pump 6 at the cleaning tank 4, and refluxing the liquid containing the industrial oxalic acid in the cleaning tank 4; the liquid containing oxalic acid enters a liquid inlet pipeline 8 from a reflux pipeline 10 and finally enters a liquid inlet of a plate-and-frame filter press 12 for cleaning; and observing the flow rate of the cleaning liquid at the branch outlets of the return pipeline 10 and the liquid outlet pipeline 9. The filter cloth cleaning effect is determined by detecting and observing the content of particle materials of the cleaning liquid at the outlet of the water return pipeline and the cleaning pipeline, and backwashing is stopped when the cleaning efficiency is too low.
When the pressure filtrate needs to enter the subsequent operation process, the valve V5 and the valve V6 are opened, so that the centrifugal pump 6 at the pressure filtrate collecting tank 5 can work and be discharged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. A backflow online cleaning device for a plate-and-frame filter press comprises a mud speed reduction stirrer, a medicament speed reduction stirrer, a mud sedimentation tank, a cleaning tank, a pressure filtrate collecting tank, a centrifugal pump, a valve, a liquid inlet pipeline, a liquid outlet pipeline, a backflow pipeline, a conveying belt and a plate-and-frame filter press; the device is characterized in that the slurry sedimentation tank is communicated with a liquid inlet of the plate-and-frame filter press by a liquid inlet pipeline; the liquid outlet pipeline is used for communicating a liquid outlet of the plate-and-frame filter press with the filter pressing liquid collecting pool; the liquid outlet pipeline is provided with a branch which is communicated with the cleaning pool; a return pipeline is connected between the liquid inlet pipeline and the cleaning pool; centrifugal pumps are arranged at the liquid outlet positions of the slurry sedimentation tank, the cleaning tank and the filter press liquid collecting tank.
2. The backflow online cleaning device for the plate and frame filter press according to claim 1, characterized in that: the valves comprise a valve V1-a valve V11, wherein the valve V1 is arranged at the effluent position of the mud sedimentation tank; a valve V2, a valve V3 and a valve V8 are respectively arranged in each tee joint formed by one end of the return pipeline and the liquid inlet pipeline; the valve V8 limits the on-off of the return pipeline and the liquid inlet pipeline; the other end of the backflow pipeline is divided into two paths, one path is connected to the top of the cleaning pool, the other path is connected to the bottom of the cleaning pool, a valve V9 is arranged on the path connected to the top, and a valve V11 and a valve V10 are arranged on the path connected to the bottom; one end of the liquid outlet pipeline is communicated with a liquid outlet of the plate-and-frame filter press; the other end of the liquid outlet pipeline is divided into two paths, one path is communicated with the cleaning tank, a valve V7 is arranged at the communication position, the other path is communicated with the pressure filtrate collecting tank, and the two paths are controlled by a valve V4.
3. The backflow online cleaning device of the plate and frame filter press according to claim 1 or 2, characterized in that: the centrifugal pump positioned at the mud sedimentation tank is arranged between the valve V1 and the valve V2; the centrifugal pump at the cleaning pool is arranged between a valve V10 and a valve V11; the centrifugal pump located in the pressure filtrate collecting tank is arranged between the valve V5 and the valve V6.
4. The backflow online cleaning device for the plate and frame filter press according to claim 1, characterized in that: the cleaning pool is added with an industrial oxalic acid medicament.
5. The backflow online cleaning device for the plate and frame filter press according to claim 1, characterized in that: a mud speed-reducing stirrer is arranged above the mud sedimentation tank; and a medicament speed reduction stirrer is arranged above the cleaning pool.
6. The backflow online cleaning device for the plate and frame filter press according to claim 1, characterized in that: the centrifugal pump is a horizontal centrifugal pump.
7. The backflow online cleaning device for the plate and frame filter press according to claim 1, characterized in that: and a slag outlet of the plate and frame filter press is provided with a conveying belt for receiving slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121869996.1U CN215916554U (en) | 2021-08-10 | 2021-08-10 | Online belt cleaning device of plate and frame filter press backward flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121869996.1U CN215916554U (en) | 2021-08-10 | 2021-08-10 | Online belt cleaning device of plate and frame filter press backward flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215916554U true CN215916554U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121869996.1U Active CN215916554U (en) | 2021-08-10 | 2021-08-10 | Online belt cleaning device of plate and frame filter press backward flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215916554U (en) |
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2021
- 2021-08-10 CN CN202121869996.1U patent/CN215916554U/en active Active
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