Full-automatic online regeneration filtering device

Abstract

The utility model discloses a full-automatic online regeneration filtering device which comprises a tank body, filtering elements are uniformly arranged in the tank body, the upper ends of the filtering elements are communicated with an inner collecting pipe, the inner collecting pipe is communicated with not less than five groups of outer collecting branch pipes, each group of outer collecting branch pipes is provided with a clear liquid valve, and the clear liquid valve is communicated with the tank body. The other ends of the external collection branch pipes are communicated with a clear liquid main pipe, the clear liquid main pipe is provided with a pipeline sight glass and a pressure transmitter and is communicated with a sampling valve, and each external collection branch pipe is communicated with a backwashing branch pipe. The utility model has the following beneficial effects: during backwashing, other filter groups still continue to filter, online backwashing without shutdown is realized, the filter element instantly flushes impurity particles adsorbed on the filter cloth into a stock solution for sedimentation by using the backwashing pressure greater than the pressure in the cylinder, the filter cloth also achieves the purpose of regeneration, the filter cloth loss caused by backwashing can be neglected, and the filter efficiency is improved. The service life of the filter cloth is greatly prolonged, and the effect of long-term use can be achieved almost without replacement.

Description

Technical Field

[0001] This utility model relates to the fields of wastewater treatment and industrial filtration technology, and in particular to a fully automatic online regeneration filtration device. Background Technology

[0002] The working principle of a filtration device is generally as follows: wastewater enters the filter through the inlet, passes through the filter components, impurities in the wastewater are filtered out, and clean water is obtained. The clean water is then discharged from the outlet. Backwashing technology is widely used in water treatment, industrial filtration, and other fields. Backwashing involves water flowing in the opposite direction to the normal filtration process. During normal filtration, water flows from upstream to downstream of the filter media, and impurities in the water are trapped in the filter media. During backwashing, however, water flows from downstream to upstream of the filter media, using the force of the reverse flow to wash away impurities and particles trapped in the filter media, restoring the filter media to its optimal filtration performance. Existing backwashing filtration devices have the following problems:

[0003] 1. Although traditional filters can meet the actual use requirements, they have a low degree of automation, require manual intervention, daily on-site pressure monitoring, and filter bag replacement after a certain period, resulting in high maintenance costs.

[0004] 2. Periodic filtration makes it difficult to achieve fully online filtration without shutting down the system.

[0005] In light of the problems we face, it is necessary to develop a fully automated online regeneration filtration device. Utility Model Content

[0006] This application provides a fully automatic online regeneration filtration device, solving the problems of low automation and difficulty in maintaining continuous operation during online filtration in existing technologies. During backwashing, the remaining filter groups continue filtering, achieving online backwashing without shutdown. The filter element utilizes the backwash pressure to exceed the internal pressure, instantly flushing impurities adsorbed on the filter cloth into the original liquid for sedimentation. At this time, the filter cloth also achieves regeneration, fully restoring its filtration capacity. Backwashing causes negligible wear on the filter cloth, greatly extending its service life and achieving long-term use with almost no replacement required.

[0007] This application provides a fully automatic online regeneration filtration device, comprising: a tank, in which filter elements are uniformly arranged; an inner manifold is connected to the upper end of each filter element; the inner manifold is connected to five or more sets of outer manifold branches; each set of outer manifold branches is equipped with a clear liquid valve; the other end of each outer manifold branch is connected to a clear liquid main pipe; the clear liquid main pipe is equipped with a pipe sight glass, a pressure transmitter, and a sampling valve; each of the outer manifold branches is connected to a backwash branch pipe; the other end of each backwash branch pipe is connected to the backwash main pipe; and an electrical control box is located on one side of the tank. One side is connected to an inlet pipe and a drain pipe. The drain pipe is located above the inlet pipe. Material enters one end of the inlet pipe, and a buffer plate is installed at the other end. An inlet valve is installed on the inlet pipe. A lower cone is fixedly connected to the bottom of the tank. A drain valve is installed at the bottom of the lower cone. The other end of the drain valve is connected to a sedimentation tank. The bottom of the sedimentation tank is connected to an auxiliary filter rotary lock opening mechanism. An air passage pipe and a positive air inlet valve are connected to the sedimentation tank. The other end of the air passage pipe is connected to the backwash main pipe. The bottom of the auxiliary filter rotary lock opening mechanism is connected to the drain pipe. A sight glass and a drain valve are installed on the drain pipe.

[0008] Furthermore, the filter elements are arranged in a rectangular or triangular pattern, with each row forming a group, and each group containing multiple filter elements. The filter elements consist of a filter core and a filter cloth.

[0009] Furthermore, the electrical control box is connected and fixed to the tank body by means of brackets and bolts, and the liquid inlet, clear liquid branch, backwash branch, branch, and drain valve are controlled to open and close by the electrical control box.

[0010] Furthermore, the connection between the backwash branch pipe and the external collection branch pipe is located at the front end of the clear liquid valve. When the clear liquid valve on the external collection branch pipe is opened, the backwash valve on the backwash branch pipe connected to the external collection branch pipe is closed, and when the backwash valve is opened, the clear liquid valve is closed.

[0011] Furthermore, the auxiliary filter rotary lock opening mechanism is equipped with a bottom filter cloth.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0013] Two control methods are employed: time-based control and differential pressure control. Time-based control initiates backwashing after a preset time interval. Differential pressure control is achieved by detecting a certain pressure difference between the feed pipe and the main clear liquid pipe via a pressure transmitter. When this difference reaches a certain value, a set of clear liquid valves on the external collection branch pipe closes, and the corresponding backwash valves on the branch pipe open for backwashing. During backwashing, the remaining filter groups continue filtering, achieving online backwashing without shutting down the entire system. Because the pressure in the backwash branch pipe is greater than the pressure inside the tank during backwashing, the increased tank pressure boosts the flow rate in the remaining filtering branch pipes, thus meeting the inlet and outlet flow loss requirements of the filtration system, with flow loss controlled within 20% of the total flow.

[0014] The filter element utilizes backwashing pressure greater than the internal pressure to instantly flush impurity particles adsorbed on the filter cloth into the original liquid for sedimentation. At this point, the filter cloth is regenerated, fully restoring its filtration capacity. Because the pressure difference between the inside and outside of the backwashing filter element is small, the wear and tear on the filter cloth is negligible, greatly extending its service life and eliminating the need for replacement, achieving long-term use.

[0015] 3. The filtration level of the clear liquid can be observed in a timely manner through the sight glass and sampling valve on the clear liquid main, and backwashing can be performed in a timely manner.

[0016] 4. By setting up a sedimentation tank, the sediment is isolated separately and discharged offline, meeting the requirements of fully online filtration of the system without the need to shut down the system for sewage discharge.

[0017] 5. By setting up an auxiliary filter rotary lock opening mechanism, the high-concentration slurry is dried and the separated clear liquid is returned to the filter for recycling, resulting in higher utilization rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the specific structure of this application;

[0019] Figure 2 This is a schematic diagram of the pipeline connections at the tank in this application;

[0020] Figure 3 This is a schematic diagram of the structure of the settling tank in this application;

[0021] Figure 4 This is a schematic diagram of the auxiliary filter rotary lock opening mechanism in this application. Detailed Implementation

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] A fully automatic online regeneration filtration device includes: a tank body 1, characterized in that filter elements 19 are uniformly arranged inside the tank body 1, the upper end of each filter element 19 is connected to an inner manifold 2, the inner manifold 2 is connected to five or more sets of outer manifold branches 3, each set of outer manifold branches 3 is equipped with a clear liquid valve 5, the other end of each outer manifold branch 3 is connected to a clear liquid main pipe 9, the clear liquid main pipe 9 is equipped with a pipe sight glass, a pressure transmitter and a sampling valve 10, each of the outer manifold branches 3 is connected to a backwash branch pipe 6, the other end of each backwash branch pipe 6 is connected to the backwash main pipe 7, and an electrical control device is installed on one side of the tank body 1. The tank 18 has a feed pipe 16 and a drain pipe 15 connected to one side of the tank body 1. The drain pipe 15 is located above the feed pipe 16. Material enters one end of the feed pipe 16, and a buffer plate 20 is provided at the other end. A feed valve 17 is provided on the feed pipe 16. A lower cone 14 is fixedly connected to the bottom of the tank body 1. A drain valve 11 is provided at the bottom of the lower cone 14. The other end of the drain valve 11 is connected to a sedimentation tank 12. The bottom end of the sedimentation tank 12 is connected to an auxiliary filter rotary lock opening mechanism 13. The bottom of the auxiliary filter rotary lock opening mechanism 13 is connected to the drain pipe 15. A sight glass and a drain valve are provided on the drain pipe 15.

[0024] The filter elements 19 are arranged in a rectangular or triangular pattern, with each row forming a group of no less than five groups. Each group contains multiple filter elements 19, and the number of filter elements 19 in each group can be increased or decreased according to actual usage. Each filter element 19 consists of a filter cartridge and a filter cloth. The electrical control box 18 is connected and fixed to the tank body 1 by means of a bracket and bolts. The drain valve 11 is controlled to open and close by the electrical control box 18. The connection between the backwash branch pipe 6 and the external collection branch pipe 3 is located at the front end of the clear liquid valve 5. When the clear liquid valve 5 on the external collection branch pipe 3 is open, the backwash valve 4 on the backwash branch pipe 6 connected to the external collection branch pipe 3 is closed. When the backwash valve 4 is open, the clear liquid valve 5 is closed. The auxiliary filter rotary lock opening mechanism 13 is provided with a bottom filter cloth 21.

[0025] The material enters the tank 1 through the feed pipe 16. The buffer plate 20 buffers the incoming material so that the filtered sediment is not affected and achieves the purpose of natural sedimentation.

[0026] Sedimentation tank 12 is used for sedimentation and sludge discharge separately, isolating the sediment and discharging it offline, thus meeting the requirements of fully online filtration of the system without the need to shut down the system for sludge discharge.

[0027] After filtration begins, the raw liquid enters tank 1, and the material enters the filter element 19 from the outside for filtration. Suspended particles are intercepted on the outside of the filter cloth. The clear liquid flows from the inner collection pipe 2 of each branch to the outer collection branch pipe 3, and finally flows to the clear liquid main pipe 9 for collection. The clear liquid is discharged and collected. Filter element 19 uses high-flow-rate filtration to control the pressure drop before and after filtration to below 20 kPa. The filtration degree of the clear liquid can be observed in time through the pipe sight glass and sampling valve 10 on the clear liquid main pipe 9, and backwashing can be performed in a timely manner.

[0028] After the filter has been running for a period of time, two detection and control methods are used: time control and differential pressure control. With time control, the system starts backwashing after a preset time value is reached. With differential pressure control, the system uses a pressure transmitter to check if the pressure difference between the feed pipe 16 and the main clear liquid pipe 9 reaches a certain value. When this value is reached, a set of clear liquid valves 5 on the external collection branch pipe 3 closes, and the backwash valves 4 on the corresponding branch pipe open. During backwashing, the remaining filter groups continue filtering, achieving online backwashing without shutting down the system. Because the pressure in the backwash branch pipe 6 is greater than the pressure in the tank 1 during backwashing, the pressure in the tank 1 increases, which in turn increases the flow rate of the remaining filtering branch pipes. Therefore, this also meets the requirements for inlet and outlet flow loss of the filtration system, keeping the flow loss within 20% of the total flow.

[0029] The backwash main 7 can be filled with clean water or gas to backwash the filter element 19.

[0030] Filter element 19 utilizes the backwash pressure to exceed the internal pressure, instantly flushing impurity particles adsorbed on the filter cloth into the original liquid for sedimentation. At this time, the filter cloth is also regenerated, fully restoring its filtration capacity. Because the pressure difference between the inside and outside of filter element 19 is small, the wear on the filter cloth from backwashing is negligible, greatly extending its service life and requiring almost no replacement for long-term use. During backwashing, each group operates sequentially, and one backwash cycle is completed when all branches have been backwashed.

[0031] After several filtration cycles, the system opens the slag discharge valve to begin discharging wastewater. At this time, most of the high-solids impurities are contained within the lower cone 14 at the bottom of the sedimentation tank 12. The bottom slag discharge valve is slowly opened to allow the high-concentration slurry and impurities to flow into the sedimentation tank 12. After allowing several minutes for sedimentation, the slag discharge valve is closed. The filtration unit continues to operate during this time, achieving fully online filtration without shutdown, greatly improving production efficiency.

[0032] A rotary lock opening mechanism 13 for auxiliary filters is installed at the bottom of the sedimentation tank 12. After opening the positive air inlet valve and the drain valve, gas is pressurized into the sedimentation tank 12 through the gas pipe 8. Under pressure, the high-concentration slurry is intercepted by the bottom filter cloth 21, and the clear liquid is discharged from the drain port through the drain pipe 15 back into the filter tank 1 to mix with the original liquid. After secondary filtration, it flows to the clear liquid port. After the treatment is completed, the remaining dry residue is automatically opened by the cylinder of the rotary lock opening mechanism 13, and the solid impurities are discharged into the receiving tank for collection.

[0033] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A fully automated on-line regenerative filter apparatus comprising: The utility model discloses a filter element, which is characterized in that the filter element is arranged uniformly in a tank body, the upper end of the filter element is communicated with an inner collecting pipe, the inner collecting pipe is communicated with no less than five groups of outer collecting branch pipes, a clear liquid valve is arranged on each outer collecting branch pipe, the other end of the outer collecting branch pipe is communicated with a clear liquid main pipe, a pipeline sight glass, a pressure transmitter and a sampling valve are arranged on the clear liquid main pipe, a backwashing branch pipe is communicated with each outer collecting branch pipe, the other end of the backwashing branch pipe is communicated with a backwashing main pipe, an electric control box is arranged on one side of the tank body, a feeding pipe and a liquid discharge pipe are communicated with one side of the tank body, the liquid discharge pipe is arranged on the upper side of the feeding pipe, one end of the feeding pipe enters material, the other end of the feeding pipe is provided with a buffer plate, a feeding valve is arranged on the feeding pipe, a lower cone is fixedly connected to the bottom of the tank body, a blowdown valve is arranged on the bottom of the lower cone, the other end of the blowdown valve is connected with a sediment tank, an auxiliary filter rotating lock uncovering mechanism is communicated with the bottom end of the sediment tank, an air path pipe and a positive air inlet valve are communicated with the sediment tank, the other end of the air path pipe is communicated with the backwashing main pipe, the bottom of the auxiliary filter rotating lock uncovering mechanism is communicated with the liquid discharge pipe, a sight glass and a liquid discharge valve are arranged on the liquid discharge pipe.

2. The fully automatic on-line regenerative filter device according to claim 1, characterized in that The filter element is arranged in a whole rectangular or triangular shape, each row is a group, and a plurality of filter elements are arranged in each group.

3. The fully automatic on-line regenerative filter device according to claim 1, characterized in that, The electric control box is connected and fixed with the tank body through the support and the bolt, and the liquid inlet, the clear liquid branch, the backwashing branch, the branch and the blowdown valve are controlled to open and close through the electric control box.

4. The fully automatic on-line regenerative filter device according to claim 1, characterized in that, The communication position of the backwashing branch pipe and the outer collecting branch pipe is located in front of the clear liquid valve branch, the backwashing valve connected with the backwashing branch pipe is closed when the clear liquid valve on the outer collecting branch pipe is opened, and the backwashing valve is opened when the clear liquid valve is closed.

5. The fully automatic on-line regenerative filter device according to claim 1, wherein, The auxiliary filter rotating lock uncovering mechanism is provided with a bottom filter cloth.

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