Diatomite filtering device

Abstract

The utility model provides a diatomite filtering device which comprises a soil barrel, a centrifugal pump and a filtering machine, an outlet of the soil barrel is communicated with an inlet of the centrifugal pump, an outlet of the centrifugal pump is communicated with an inlet of the filtering machine, the filtering machine comprises a plurality of layers of overlapped filtering nets, and a backwashing opening is formed in the bottom of the filtering machine and located below the filtering nets. The backwashing opening is communicated with an outlet of the backwashing pump; the filtering device further comprises a water body conveying pipeline, and a water outlet of the water body conveying pipeline is aligned with or connected with a water inlet of the soil barrel. Water can be injected into the filtering device through the water body conveying pipeline to prepare diatomite slurry, and then the diatomite slurry is automatically conveyed into the filtering machine through the centrifugal pump; according to the filter, the filter medium does not need to be manually added into the filter, the conveying efficiency of the diatomite filter medium is improved, moreover, when the filter screen needs to be cleaned, the whole filter does not need to be disassembled, and backwashing can be realized by inputting cleaning liquid into the backwashing opening, so that the cleaning is more convenient and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a diatomaceous earth filtering device. Background Art

[0002] Diatomaceous earth filter is a highly efficient filtering device, mainly used to remove suspended particles, colloids and other impurities in water or liquid. At present, diatomaceous earth filter has been widely used in the wine, beverage, medicine, chemical and other industries. The filtration clarity can reach 99.8%. If operated properly, it can even remove E. coli. It can filter out particles below 1-0.1um.

[0003] However, the current diatomaceous earth filter has many disadvantages, mainly including: first, the filter medium (i.e., diatomaceous earth slurry) needs to be manually added to the filter; second, after the diatomaceous earth filter has been used for a period of time, the filter needs to be completely dismantled and the filter cloth needs to be taken out for cleaning, resulting in low work efficiency. Utility Model Content

[0004] In view of this, the utility model provides a diatomaceous earth filtering device, into which water can be injected through a water delivery pipeline to prepare diatomaceous earth slurry, and then the diatomaceous earth slurry is automatically delivered to the filter by a centrifugal pump. There is no need to manually add filter medium into the filter, thereby improving the delivery efficiency of the diatomaceous earth filter medium. Moreover, when the filter needs to be cleaned, there is no need to disassemble the entire filter. Instead, the backwashing port can be used to input cleaning liquid into it to achieve backwashing, making cleaning more convenient and efficient.

[0005] In order to solve the above technical problems, the utility model provides a diatomaceous earth filtering device, comprising a soil bucket, a centrifugal pump and a filter, the outlet of the soil bucket is connected to the inlet of the centrifugal pump, the outlet of the centrifugal pump is connected to the inlet of the filter, the filter comprises a plurality of stacked filter screens, a backwash port is arranged at the bottom of the filter and below the filter screen, and the backwash port is connected to the outlet of the backwash pump;

[0006] The filtering device also includes a water conveying pipeline, and the water outlet of the water conveying pipeline is aligned with or connected to the water inlet of the soil barrel. The utility model can inject water into the water conveying pipeline to prepare diatomaceous earth slurry, and then use a centrifugal pump to automatically convey the diatomaceous earth slurry to the filter. There is no need to manually add filter medium to the filter, thereby improving the conveying efficiency of the diatomaceous earth filter medium. Moreover, when the filter needs to be cleaned, there is no need to disassemble the entire filter. Backwashing can be achieved by inputting cleaning liquid into the backwashing port, making cleaning more convenient and efficient.

[0007] The outlet of the earth bucket is connected to the inlet of the centrifugal pump through a pipeline and a first valve, the outlet of the centrifugal pump is connected to the inlet of the filter through a pipeline and a second valve, and the backwashing port is connected to the backwashing pump and the third valve through a pipeline. The utility model can open and close the first valve to control the circulation and blocking of the slurry between the earth bucket and the centrifugal pump, open and close the second valve to control the circulation and blocking of the liquid between the centrifugal pump and the filter, and open and close the third valve to control the circulation and blocking of water between the backwashing pump and the backwashing port, which is more convenient to operate.

[0008] The water transport pipeline includes a first pipeline horizontally arranged below the filter, a second pipeline vertically arranged between the filter and the earth barrel, and a third pipeline horizontally arranged above the earth barrel, wherein the second pipeline is connected to the water outlet direction of the first pipeline, and the third pipeline is connected to the water outlet direction of the second pipeline; a fourth valve is arranged on the first pipeline, a fifth valve is arranged on the second pipeline, and a water pump is arranged above the fifth valve. The utility model can close the fourth valve and start the water pump when the water transport pipeline finishes delivering water, thereby further extracting the water remaining in the first pipeline and the second pipeline due to gravity, thereby preventing the water volume from accumulating inside the pipeline and causing the pipeline to rust.

[0009] A vertically arranged fixed shaft is also provided inside the filter, and a plurality of placement plates are arranged at intervals on the fixed shaft; and the filter net is arranged on the placement plates.

[0010] The fixed shaft is provided with a plurality of air outlets, the top of the filter is provided with a driving motor, the driving motor is connected to the top of the fixed shaft, and the top side of the fixed shaft is connected with an air intake hose.

[0011] The filter screen is a stainless steel filter screen. Among multiple adjacent filter screens, the lower surface of the placement plate along the bottom-up direction fits the upper surface of the previous filter screen, and the upper surface of the placement plate fits the lower surface of the next filter plate. The utility model can ensure that the arrangement of the filter screen is more compact and the filtering effect is better through this arrangement.

[0012] The soil bucket, centrifugal pump and filter are all arranged on the same base frame, and moving wheels are arranged under the base frame. Brakes are arranged on the moving wheels. The utility model can realize convenient and fast movement of the filter device through the moving wheels, and lock the position of the filter device that has been moved to a good position through the brakes.

[0013] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0014] 1. The utility model can inject water into the water body through a water delivery pipeline to prepare diatomaceous earth slurry, and then use a centrifugal pump to automatically deliver the diatomaceous earth slurry to the filter, without manually adding filter media into the filter, thereby improving the delivery efficiency of the diatomaceous earth filter media. Moreover, when the filter needs to be cleaned, the entire filter does not need to be disassembled, but the backwash port can be used to input cleaning liquid into it to achieve backwashing, which makes cleaning more convenient and efficient.

[0015] 2. The utility model can control the circulation and blocking of slurry between the soil bucket and the centrifugal pump by opening and closing the first valve, control the circulation and blocking of liquid between the centrifugal pump and the filter by opening and closing the second valve, and control the circulation and blocking of water between the backwash pump and the backwash port by opening and closing the third valve, which is more convenient to operate.

[0016] 3. The utility model can close the fourth valve and start the water pump when the water delivery pipeline has finished delivering water, thereby further extracting the water remaining in the first pipeline and the second pipeline due to gravity, thereby preventing the water from accumulating inside the pipeline and causing the pipeline to rust.

[0017] 4. The lower surface of the placement plate along the bottom-up direction fits the upper surface of the previous filter screen, and the upper surface of the placement plate fits the lower surface of the next filter plate. The utility model can ensure that the arrangement of the filter screen is more compact and the filtering effect is better through this arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a diatomaceous earth filtering device provided by an embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of a diatomaceous earth filtering device provided in another embodiment of the utility model.

[0020] Explanation of the accompanying drawings: 1. Earth barrel; 2. Centrifugal pump; 3. Filter; 4. First valve; 5. Second valve; 6. Backwash port; 7. Backwash pump; 8. Third valve; 9. Filter; 10. Base frame; 11. Moving wheel; 12. Water delivery pipeline; 13. First pipeline; 14. Second pipeline; 15. Third pipeline; 16. Fourth valve; 17. Fifth valve; 18. Water pump; 19. Fixed shaft; 20. Placement plate; 21. Air outlet; 22. Drive motor; 23. Air intake hose. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-2, the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0022] Embodiment 1, as Figure 1 As shown: This embodiment provides a diatomaceous earth filtering device, including a soil bucket 1, a centrifugal pump 2 and a filter 3, the outlet of the soil bucket 1 is connected to the inlet of the centrifugal pump 2, the outlet of the centrifugal pump 2 is connected to the inlet of the filter 3, the filter 3 includes multiple layers of stacked filter screens 9, and a backwash port 6 is provided at the bottom of the filter 3 and below the filter screen 9, and the backwash port 6 is connected to the outlet of the backwash pump 7;

[0023] The filtering device also includes a water delivery pipeline 12, the water outlet of the water delivery pipeline 12 is aligned with or connected to the water inlet of the soil barrel 1. The utility model can inject water into the water delivery pipeline 12 to prepare diatomaceous earth slurry, and then use the centrifugal pump 2 to automatically deliver the diatomaceous earth slurry to the filter 3. There is no need to manually add filter medium to the filter, thereby improving the delivery efficiency of the diatomaceous earth filter medium. Moreover, when the filter needs to be cleaned, there is no need to disassemble the entire filter 3. Backwashing can be achieved by inputting cleaning liquid into the backwash port 6, making cleaning more convenient and efficient.

[0024] The soil barrel 1 is used to mix and store diatomite slurry of a certain concentration. Diatomite powder and water are mixed evenly in a certain proportion in this barrel to form a slurry suitable for filtering operation. This slurry is then pumped out by the centrifugal pump 2 and sent to the filter 3 for pre-coating or replenishing the filter cake layer.

[0025] The outlet of the earth bucket 1 is connected to the inlet of the centrifugal pump 2 through a pipeline and a first valve 4, the outlet of the centrifugal pump 2 is connected to the inlet of the filter 3 through a pipeline and a second valve 5, and the backwash port 6 is connected to the backwash pump 7 and the third valve 8 through a pipeline. The utility model can open and close the first valve 4 to control the circulation and blocking of the slurry between the earth bucket 1 and the centrifugal pump 2, and open and close the second valve 5 to control the circulation and blocking of the liquid between the centrifugal pump 2 and the filter 3, and open and close the third valve 8 to control the circulation and blocking of water between the backwash pump 7 and the backwash port 6, which is more convenient to operate.

[0026] When working, first, prepare the diatomite slurry in the soil barrel 1 according to the operating requirements. Then, start the centrifugal pump 2 to pump the diatomite slurry from the soil barrel 1 and send it to the filter 3. In the early stage, the diatomite will form a layer of filter cake (pre-coating) on ​​the surface of the filter screen, and this process is called pre-coating. After the pre-coating is completed, the liquid to be filtered is also introduced from the liquid storage tank by the centrifugal pump 2, passes through the pre-coating, and the particulate impurities are intercepted by the filter cake layer, and the clear liquid passes through the filter cake and the filter 3 structure and is finally discharged.

[0027] After filtering for a period of time, when the filter cake layer is clogged and the pressure difference increases to a certain extent, backwashing or replacement of the filter cake layer is required. At this time, it may be necessary to empty the filter 3 and re-perform the pre-coating process. In this embodiment, a sewage outlet, such as a switch valve, can be provided on the bottom side of the outer shell of the filter 3 to discharge sewage after backwashing. In this embodiment, the backwashing port 6 is set at the bottom to achieve reverse flushing. The backwashing port 6 is connected to the upstream water supply equipment through the third valve 8. When flushing is required, the third valve 8 is opened and the backwashing pump 7 is started.

[0028] The water delivery pipeline 12 includes a first pipeline 13 horizontally arranged below the filter 3, a second pipeline 14 vertically arranged between the filter 3 and the earth barrel 1, and a third pipeline 15 horizontally arranged above the earth barrel 1, wherein the second pipeline 14 is connected to the water outlet direction of the first pipeline 13, and the third pipeline 15 is connected to the water outlet direction of the second pipeline 14; a fourth valve 16 is arranged on the first pipeline 13, a fifth valve 17 is arranged on the second pipeline 14, and a water pump 18 is arranged above the fifth valve 17. The utility model can close the fourth valve 16 and start the water pump 18 when the water delivery pipeline 12 completes water delivery, thereby further extracting the water remaining in the first pipeline 13 and the second pipeline 14 due to gravity, thereby preventing the water volume from accumulating inside the pipeline and causing the pipeline to rust.

[0029] A vertically arranged fixed shaft 19 is further provided inside the filter 3 , and a plurality of placement plates 20 are arranged at intervals on the fixed shaft 19 ; the filter net 9 is arranged on the placement plates 20 .

[0030] The fixed shaft 19 is provided with a plurality of air outlets 21 , a driving motor 22 is provided on the top of the filter 3 , the driving motor 22 is connected to the top of the fixed shaft 19 , and an air intake hose 23 is connected to the top side of the fixed shaft 19 .

[0031] The filter screen 9 is a stainless steel filter screen, which has good corrosion resistance and can reduce the frequency of replacement. Among multiple adjacent filter screens 9, the lower surface of the placement plate 20 along the bottom-up direction fits the upper surface of the previous filter screen 9, and the upper surface of the placement plate 20 fits the lower surface of the next filter plate. The utility model can ensure that the arrangement of the filter screen 9 is more compact and the filtering effect is better through this arrangement.

[0032] The soil bucket 1, the centrifugal pump 2 and the filter 3 are all arranged on the same base frame 10. A moving wheel 11 is provided under the base frame 10. A brake is provided on the moving wheel 11. The utility model can realize convenient and fast movement of the position of the filter device through the moving wheel 11, and lock the position of the filter device that has been moved to a good position through the brake.

[0033] Embodiment 2, as Figure 2 As shown: The technical features of this embodiment are basically the same as those of the above embodiment 1, with the only difference being that a plurality of air outlets 21 are provided on the fixed shaft 19, a driving motor 22 is provided on the top of the filter 3, the driving motor 22 is connected to the top of the fixed shaft 19, the top side of the fixed shaft 19 is connected to the air intake hose 23 via a rotary joint, the fixed end of the rotary joint is communicated with the air intake hose 23, and the rotating end of the rotary joint is communicated with the rotating shaft, so that, through the reciprocating operation of the motor between forward and reverse rotation, the air outlet 21 on the fixed shaft 19 can output gas with the aid of the air supply equipment connected upstream of the air intake hose 23 during backwashing, and the gas can be rotated and ejected in the horizontal direction, cooperating with the vertical backwashing in the horizontal and vertical directions respectively, to enhance the air-water disturbance and improve the cleaning efficiency.

[0034] The use of the utility model:

[0035] First of all, it should be made clear that the filtering device involved in the utility model is mainly used for filtering solids in liquid-solid mixtures or impurities in slurries, and suspended matter in suspensions. The utility model takes the filtration of diatomaceous earth slurry as an example to explain its use method in detail, and takes the filtration process of Example 1 as an example to explain that when the diatomaceous earth slurry needs to be filtered, the diatomaceous earth slurry is prepared in the soil barrel 1 according to the operating requirements. Then, start the centrifugal pump 2, pump the diatomaceous earth slurry out of the soil barrel 1, and send it into the filter 3. In the early stage, the diatomaceous earth will form a layer of filter cake (pre-coating layer) on the surface of the filter screen. This process is called pre-coating. After the pre-coating is completed, the liquid to be filtered is also introduced from the liquid storage tank by the centrifugal pump 2, passes through the pre-coating layer, and the particulate impurities are intercepted by the filter cake layer. The clear liquid passes through the filter cake and the filter 3 structure and is finally discharged;

[0036] After filtering for a period of time, when the filter cake layer is clogged and the pressure difference increases to a certain extent, backwashing or replacing the filter cake layer is required. At this time, it may be necessary to empty the filter 3 and re-perform the pre-coating process. In this embodiment, a sewage outlet, such as a switch valve, can be provided on the bottom side of the outer shell of the filter 3 to discharge sewage after backwashing. In this embodiment, the backwashing port 6 is set at the bottom to achieve reverse flushing. The backwashing port 6 is connected to the upstream water supply equipment through the third valve 8. When flushing is required, open the third valve 8 and start the backwashing pump 7;

[0037] Taking the filtering process in Example 2 as an example, the filtering process is basically the same, and only the work and effect of the improved technical features are described in detail. In the filtering process, refer to the process of Example 1. In the filtering process, the motor reciprocates between forward and reverse rotation, and the gas outlet 21 on the fixed shaft 19 can output gas with the help of the gas supply device connected upstream of the air inlet hose 23 during backwashing, and the gas can be rotated and sprayed in the horizontal direction, which cooperates with the vertical backwashing in the horizontal and vertical directions respectively, to enhance the gas-water disturbance and improve the cleaning efficiency. After the filtering is completed, the backwashing action in the above Example 1 is repeated;

[0038] The utility model can inject water into the water body through the water delivery pipeline 12 to prepare diatomaceous earth slurry, and then use the centrifugal pump 2 to automatically deliver the diatomaceous earth slurry to the filter 3, without manually adding filter medium into the filter, thereby improving the delivery efficiency of the diatomaceous earth filter medium. Moreover, when the filter needs to be cleaned, the entire filter 3 does not need to be disassembled, but the backwashing port 6 can be used to input cleaning liquid into it to achieve backwashing, which makes cleaning more convenient and efficient.

[0039] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A diatomaceous earth filtering device, comprising a soil bucket (1), a centrifugal pump (2) and a filter (3), characterized in that: The outlet of the soil bucket (1) is connected to the inlet of the centrifugal pump (2), and the outlet of the centrifugal pump (2) is connected to the inlet of the filter (3). The filter (3) comprises a plurality of stacked filter screens (9). A backwashing port (6) is provided at the bottom of the filter (3) and below the filter screen (9). The backwashing port (6) is connected to the outlet of the backwashing pump (7); The filtering device also comprises a water body conveying pipeline (12), the water outlet of the water body conveying pipeline (12) being aligned with or connected to the water inlet of the earthen barrel (1).

2. The diatomaceous earth filtration device according to claim 1, characterized in that: The outlet of the soil barrel (1) is connected to the inlet of the centrifugal pump (2) through a pipeline and a first valve (4), the outlet of the centrifugal pump (2) is connected to the inlet of the filter (3) through a pipeline and a second valve (5), and the backwash port (6) is connected to the backwash pump (7) and the third valve (8) through a pipeline.

3. The diatomaceous earth filtration device according to claim 2, characterized in that: The water transport pipeline (12) comprises a first pipeline (13) horizontally arranged below the filter (3), a second pipeline (14) vertically arranged between the filter (3) and the earthen barrel (1), and a third pipeline (15) horizontally arranged above the earthen barrel (1), wherein the second pipeline (14) is connected to the water outlet direction of the first pipeline (13), and the third pipeline (15) is connected to the water outlet direction of the second pipeline (14); a fourth valve (16) is arranged on the first pipeline (13), a fifth valve (17) is arranged on the second pipeline (14), and a water pump (18) is arranged above the fifth valve (17).

4. The diatomaceous earth filtration device according to claim 3, characterized in that: A vertically arranged fixed shaft (19) is also provided inside the filter (3), and a plurality of placement plates (20) are arranged at intervals on the fixed shaft (19); the filter net (9) is arranged on the placement plates (20).

5. The diatomaceous earth filtering device according to claim 4, characterized in that: The fixed shaft (19) is provided with a plurality of air outlets (21), the top of the filter (3) is provided with a driving motor (22), the driving motor (22) is connected to the top of the fixed shaft (19), and the top side of the fixed shaft (19) is connected with an air intake hose (23).

6. The diatomaceous earth filtration device according to claim 5, characterized in that: The filter screen (9) is a stainless steel filter screen. Among a plurality of adjacent filter screens (9), the lower surface of the placement plate (20) along the bottom-up direction fits the upper surface of the previous filter screen (9), and the upper surface of the placement plate (20) fits the lower surface of the next filter plate.

7. The diatomaceous earth filtration device according to claim 6, characterized in that: The soil bucket (1), the centrifugal pump (2) and the filter (3) are all arranged on the same base frame (10), and a moving wheel (11) is arranged below the base frame (10).

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