Turbulent flow filter

Abstract

The utility model relates to a turbulent flow filter which comprises a shell, a filter screen group, an upper cover, an extraction device, a lower cover and a plurality of one-way valves, the filter screen group is arranged in the shell, the upper cover covers the shell and the filter screen group, the lower cover is connected to the bottom of the shell, the extraction device can extract sewage from the outside to a filter space surrounded by the filter screen group, and the lower cover is provided with a plurality of inflow holes in a penetrating manner. The plurality of one-way valves are arranged on the shell or the lower cover and are communicated with the filtering space and the outside; compared with an existing filter which prevents backflow of impurities through a water stop plate and a spring, easily causes inclination of the water stop plate due to different impact forces of sewage at all positions, reduces the sectional area of a sewage path and reduces the filtering efficiency, the filter adopts the one-way valve, prevents backflow of the impurities from being prevented, meanwhile, reduces the sewage passing path due to different impact forces of the sewage at all positions, and improves the filtering efficiency. Therefore, the filtering efficiency is not influenced.

Description

Technical Field

[0001] This utility model relates to a filter, and more particularly to a turbulence filter. Background Technology

[0002] One of the most crucial components of a filter is the filter screen or filter element. To extend the lifespan of these screens and elements and reduce maintenance costs, many industry professionals are dedicated to developing new types of filters, such as... Figure 8 The image shows an existing filter capable of removing slag, comprising a housing 91, an internal positioning mesh 92 for mounting a filter element 93, and a top cover 94 covering the housing 91, the positioning mesh 92, and the filter element 93. For slag removal, the existing filter also includes a pumping unit 95. Figure 9 As shown, during use, sewage enters a bottom assembly 96 from the sewage tank 80, and the pumping assembly 95 continuously pumps the sewage upwards, causing the sewage to flow through the filter element 93 for filtration. The continuous pumping causes the sewage to flow, and the sewage containing more impurities can be discharged through a slag discharge pipe 941 provided on the top cover 94.

[0003] Among them, such as Figure 8 As shown, the bottom assembly 96 includes a housing 960 connected to the bottom of the outer casing 91. The bottom of the housing 960 has several through holes 961. The bottom assembly 96 also includes a limiting member 962, a water-stop plate 963, and a spring 964. The limiting member 962 is disposed within the housing 960. The water-stop plate 963 can move along the limiting member 962. The opposite ends of the spring 964 abut against the baffle provided on the limiting member 962 and the water-stop plate 963, respectively. Figure 9 As shown, when the pumping unit 95 continuously pumps out sewage, the sewage can push the water-stop plate 963 and compress the spring 964, thereby entering the interior of the housing 960 through the through hole 961. When the pumping unit 95 malfunctions or stops operating, the spring 964 causes the water-stop plate 963 to sink and seal the several through holes 961, preventing impurities from being carried back into the sewage tank 80.

[0004] However, the disadvantage of the aforementioned bottom assembly 96 is that, since all through holes 961 are covered by a single waterstop plate 963 and supported only by the spring 964 located in the middle, when sewage enters the housing 960, the impact force of sewage on different parts of the waterstop plate 963 may be inconsistent due to different operating methods or positions. This can cause the waterstop plate 963 to tilt, resulting in some of the through holes 961 being unblocked while others are still blocked or even covered by the waterstop plate 963. This reduces the cross-sectional area of ​​the path for sewage to enter the existing filter, thereby reducing the efficiency of the existing filter in filtering sewage. Utility Model Content

[0005] To address the problem in existing filters where the cross-sectional area of ​​the wastewater inlet path is reduced due to the obstruction of the inclined waterstop plate, thus decreasing wastewater treatment efficiency, the present invention aims to propose a turbulence filter that is unaffected by the impact of wastewater and can maintain filtration efficiency.

[0006] The turbulence filter proposed by this utility model to solve the technical problem comprises:

[0007] A housing having an outlet located on the side of the housing;

[0008] A filter assembly is disposed inside the housing and surrounds it to form a filtration space, and an annular space is formed between the filter assembly and the inner wall of the housing to communicate with the outlet.

[0009] A cover is provided on top of the outer shell and the filter assembly, and a drain pipe is provided, which connects the filter space and the outside of the turbulence filter.

[0010] An extraction device includes a driver, a shaft, and at least one impeller. The shaft is connected to the driver and passes through the top cover to extend into the filter space. The impeller is connected to the shaft and is located in the filter space, adjacent to the bottom of the housing.

[0011] A lower cover is attached to the bottom of the outer casing. The lower cover forms a flow space communicating with the filter space, and it has several inflow holes that connect the flow space to the outside of the turbulence filter.

[0012] Several one-way valves are provided on the housing or in several inlet holes of the lower cover, and are connected to the outside of the turbulence filter and the filter space.

[0013] The improved efficiency of this invention lies in the fact that, compared to existing filters, the stop plate is prone to tilting due to inconsistent sewage impact forces at different locations, which reduces the sewage's path and results in poor filtration efficiency. The turbulence filter of this invention uses several one-way valves to prevent impurities from being carried back into the turbulence filter. When the extraction device extracts sewage, the sewage passes normally through the one-way valves, and the flow path and flow rate are not affected by the different impact forces of sewage at different locations. This provides a turbulence filter that can both prevent impurities from being carried back and maintain filtration efficiency. Attached Figure Description

[0014] Figure 1 This is a side cross-sectional view of the first preferred embodiment of the present invention.

[0015] Figure 2 for Figure 1 A magnified view of a portion of the image.

[0016] Figure 3 This is a schematic diagram of the flow direction of the one-way valve in the first preferred embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the side cross-section of the first preferred embodiment of the present invention.

[0018] Figure 5 This is a side cross-sectional view of the second preferred embodiment of the present invention.

[0019] Figure 6 This is a partial enlarged view of the filter assembly in the second preferred embodiment of the present invention.

[0020] Figure 7 This is a schematic diagram of the side cross-section of the third preferred embodiment of the present invention.

[0021] Figure 8 This is a side view cross-sectional diagram of an existing filter.

[0022] Figure 9 This is a schematic diagram showing the use of a side view of an existing filter. Detailed Implementation

[0023] To gain a detailed understanding of the technical features and practical effects of this utility model, and to enable its implementation according to the invention, the preferred embodiment shown in the figures is further described in detail below:

[0024] like Figure 1 The first preferred embodiment of the turbulence filter of this utility model is shown, which includes a housing 10, a filter screen assembly 20, an upper cover 30, an extraction device 40, a lower cover 51, and several one-way valves 52. The filter screen assembly 20 is disposed inside the housing 10, the upper cover 30 is disposed on the housing 10, the extraction device 40 is disposed on the upper cover 30 and extends into the interior of the filter screen assembly 20, the lower cover 51 is connected to the bottom of the housing 10, and the several one-way valves 52 are disposed on the lower cover 51.

[0025] like Figure 1 As shown, the top of the housing 10 has an upper opening, and the housing 10 includes a lower opening 11 located at the bottom of the housing 10 and communicating with the interior and exterior of the housing 10. The housing 10 also includes an outlet 12 located on the side of the housing 10 and communicating with the interior and exterior of the housing 10.

[0026] like Figure 1As shown, the filter assembly 20 is in the shape of a ring column and is disposed inside the outer shell 10. The filter assembly 20 surrounds and forms a filtration space 21. The lower opening 11 communicates with the filtration space 21. The filter assembly 20 and the inner wall of the outer shell 10 form an annular space S that communicates with the outlet 12. Wastewater can enter the filtration space 21 through the lower opening 11, be filtered by the filter assembly 20, and flow sequentially through the annular space S and the outlet 12 before flowing out of the turbulence filter.

[0027] like Figure 1 As shown, the top cover 30 is placed on the top of the outer shell 10 and the filter assembly 20 to close the upper opening of the outer shell 10. The top cover 30 is provided with a drain pipe 31, which connects the filter space 21 and the outside of the turbulence filter. Impurities in the filter space 21 can be discharged through the drain pipe 31 to avoid accumulating in the filter space 21.

[0028] like Figure 1 As shown, the extraction device 40 includes a driver 400, a shaft 41, and two impellers 42. The shaft 41 is connected to the driver 400 and passes through the upper cover 30, extending into the filter space 21 surrounded by the filter assembly 20. The two impellers 42 are connected to the shaft 41 at intervals, and as shown... Figure 2 As shown, the two impellers 42 are located in the filtration space 21 and near the bottom of the housing 10. The shaft 41 can be driven by the driver 400 to rotate the impellers 42 so as to extract sewage. The driver 400 can be a motor.

[0029] like Figure 1 and Figure 2 As shown, the lower cover 51 is specifically an upward-facing groove. The top of the lower cover 51 is connected to the bottom of the outer casing 10. A flow space 510 is formed inside the lower cover 51 and communicates with the filter space 21. The lower cover 51 is provided with several inflow holes 511, which connect the outside of the turbulence filter and the flow space 510, so that fluid can enter the filter space 21 from the outside by sequentially passing through the several inflow holes 511, the flow space 510 and the lower opening 11.

[0030] like Figure 2 and Figure 3 As shown, the plurality of one-way valves 52 are respectively provided in the plurality of inlet holes 511 of the lower cover 51, thereby allowing fluid to enter the flow space 510 from the outside of the turbulence filter through the plurality of one-way valves 52, and preventing fluid from flowing in the reverse direction from the flow space 510 through the one-way valves 52 to the outside of the turbulence filter.

[0031] The use of this turbulence filter is roughly as follows: Figure 4As shown, the lower cover 51 is first immersed downwards into a sewage tank 80. Due to hydraulic pressure, the sewage flows into the flow space 510 of the lower cover 51 through the one-way valve 52. As the immersion continues, the sewage continuously flows in and accumulates upwards, thus passing through the lower opening 11 and submerging the impeller 42. By activating the driver 400, the impeller 42 begins to rotate, allowing the sewage to enter the filter space 21 from the flow space 510 through the lower opening 11, thereby continuously pumping the sewage upwards. At the same time, the sewage is agitated, reducing the accumulation of impurities in the sewage on the filter screen assembly 20.

[0032] Then, the sewage flowing into the filtration space 21 is filtered by the filter screen assembly 20 and flows into the annular space S. As filtration continues, the concentration of impurities in the sewage in the filtration space 21 increases. Finally, as the sewage is continuously pumped upward, the sewage containing a large number of impurities is discharged from the drain pipe 31 provided on the top cover 30. The filtrate filtered by the filter screen assembly 20 flows out from the annular space S through the outlet 12 for reuse or further filtration in other ways.

[0033] Through the one-way valve 52, when sewage carrying impurities enters the flow space 510, the impurities can no longer be carried away and flow back from the flow space 510 through the one-way valve 52 to the outside of the turbulence filter. This effectively prevents impurities from flowing back into the sewage tank 80, allowing the impurities to be concentrated and discharged through the drain pipe 31. This prevents the concentration of impurities in the sewage tank 80 from increasing and affecting subsequent filtration operations. The one-way valve 52 can be any existing one-way valve, and the number of one-way valves 52 can be determined according to the filtration speed requirements. In the first preferred embodiment of this utility model, no restrictions are imposed.

[0034] Compared to existing filters in the prior art, which use a combination of limiting element 962, water-stop plate 963, and spring 964 to prevent backflow of impurities, the water-stop plate is prone to tilting due to inconsistent impact forces of sewage at different locations, reducing the path of sewage and resulting in poor filtration efficiency. The turbulence filter of this invention uses several one-way valves 52 to prevent impurities from being carried back. When the extraction device 40 extracts sewage, the sewage passes normally through the one-way valves 52, and the flow rate is not affected by the different impact forces of sewage at different locations. Thus, this invention can both prevent impurities from being carried back and maintain filtration efficiency.

[0035] like Figure 2 and Figure 3As shown, the turbulence filter further includes a fixing plate 53, which is attached to the lower cover 51 and together with the lower cover 51 clamps the plurality of one-way valves 52. Specifically, the fixing plate 53 is fixed to the lower cover 51 by bolts, and the fixing plate 53 has several mating holes for the plurality of one-way valves 52 to pass through, so that sewage can normally enter the lower cover 51 through the one-way valves 52 without being affected by the fixing plate 53. By fixing the fixing plate 53 and the lower cover 51 in a clamping manner, the one-way valves 52 can be fixedly installed in the corresponding inlet holes 511.

[0036] In other embodiments, the turbulence filter may also include several clamping members, each of which is installed to clamp the several one-way valves 52 respectively. In another embodiment, the one-way valve 52 may also be tightly fitted to or glued to the corresponding inlet hole 511. Similarly, the several one-way valves 52 can be respectively set in the several inlet holes 511. The advantage of the first preferred embodiment of this utility model is that the method of using the fixing plate 53 is not only easy to design, but also convenient for installation, fixing, disassembly and assembly, which can improve the efficiency of cleaning and replacing the one-way valves 52.

[0037] In addition, such as Figure 2 As shown, in the first preferred embodiment of this utility model, the plurality of inflow holes 511 are provided through the bottom of the lower cover 51, and the fixing plate 53 is also fixed to the bottom of the lower cover 51. When the extraction device 40 extracts sewage, it can... Figure 4 As shown, the sewage flows in the direction it is being pumped out, that is, from bottom to top, reducing the turning points that occur during the sewage flow and improving the efficiency of sewage extraction.

[0038] like Figure 1 As shown, the extraction device 40 further includes several protrusions 43, which protrude from the shaft 41 and are arranged at intervals along a length direction of the shaft 41. The protrusions 43 are located in the filtration space 21. When the shaft 41 drives the impeller 42 to rotate and extracts sewage into the filtration space 21, the protrusions 43 can rotate accordingly, thereby further agitating the sewage in the filtration space 21, making it less likely for impurities in the sewage to accumulate on the filter screen assembly 20, and extending the service life of the filter screen assembly 20.

[0039] like Figure 1 and Figure 2As shown, in the first preferred embodiment of the present invention, the extraction device 40 includes two spaced-apart blades 42. In other embodiments, the extraction device 40 may also include a single blade 42 or more than three blades 42. The actual number of blades 42 can be determined according to the desired sewage extraction force. As long as the extraction device 40 includes at least one blade 42, it can achieve the purpose of extracting sewage and making the sewage flow. The actual number of blades 42 is not limited by the first preferred embodiment of the present invention.

[0040] like Figure 2 As shown, in the first preferred embodiment of this utility model, the filter assembly 20 includes a positioning net 22 and a filter element 23. The positioning net 22 is cylindrical and includes an annular platform 221. The top of the positioning net 22 is attached to the top cover 30. The annular platform 221 extends radially inward from the bottom of the positioning net 22 to form an annular shape. The filter element 23 is a soft filter material, specifically a filter cotton. The filter element 23 is disposed on the annular platform 221 and abuts against the inner side of the positioning net 22. The positioning net 22 is used for installation and positioning. When sewage enters the filtration space 21, the sewage flows through the filter element 23 and is filtered, and then flows through the space between the grids of the positioning net 22 to the annular space S.

[0041] To clean the turbulence filter, first remove the top cover 30 from the outer casing 10, then detach the filter assembly 20 from the top cover 30 to replace the filter element 23, clean the positioning mesh 22, and simultaneously clean the drain pipe 31 of the top cover 30, the inner wall of the outer casing 10, and other areas. In other embodiments, the filter assembly 20 may also adopt the structure of filter screens and filter elements in currently known filters, and is not limited to the first preferred embodiment of this utility model.

[0042] like Figure 5 The image shown is a second preferred embodiment of the turbulence filter of this utility model. The difference between this second preferred embodiment and the first preferred embodiment is that the filter assembly in the second preferred embodiment contains only one filter screen 20A, which is directly attached to the upper cover 30. Figure 6 As shown, the filter 20A includes several filter holes 24, each of which is a hole formed by laser drilling and has a diameter D. The diameter D of each filter hole 24 is less than or equal to 20 micrometers and greater than or equal to 5 micrometers. Wastewater is filtered using the filter pores 24 of the filter screen 20A with a diameter D in the micrometer range, thereby providing another form of filter screen assembly.

[0043] like Figure 7The diagram shows a third preferred embodiment of the turbulence filter of this utility model. The difference between this embodiment and the first preferred embodiment is that the plurality of one-way valves 52 are disposed on the housing 10A. Specifically, the housing 10A includes a plurality of spaced through holes 13. The plurality of through holes 13 are located at the bottom of the housing 10A, connecting the flow space 510 of the lower cover 51A and the filter space 21, replacing the aforementioned lower opening 11. The plurality of one-way valves 52 are respectively disposed in the plurality of through holes 13. The fixing plate 53 is bolted to the housing 10A and together with the housing 10A clamps the plurality of one-way valves 52.

[0044] In use, wastewater first flows into the flow space 510 of the lower cover 51A through the several inflow holes 511, and then enters the filtration space 21 through the several one-way valves 52. This prevents impurities from being carried back into the flow space 510 of the lower cover 51A and the wastewater tank 80 after the wastewater enters the filtration space 21. Furthermore, in the third preferred embodiment of this invention, the filter element 23 and positioning net 22 of the filter assembly 20 can be used as in the first preferred embodiment, or the filter screen 20A of the second preferred embodiment can be used, both achieving the desired filtration effect.

[0045] In addition, in the third preferred embodiment of the present invention, the lower cover 51A adopts a screen structure. Specifically, several inflow holes 511 of the lower cover 51A are distributed on each side of the lower cover 51A. These several inflow holes 511 can serve as a first filtration mechanism to screen out larger impurities. These larger impurities can be directly cleaned when cleaning the sewage tank 80.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical solution provided by the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A turbulence filter, characterized in that, Include: A housing having an outlet located on the side of the housing; A filter assembly is disposed inside the housing and surrounds it to form a filtration space, and an annular space is formed between the filter assembly and the inner wall of the housing to communicate with the outlet. A cover is provided on top of the outer shell and the filter assembly, and a drain pipe is provided, which connects the filter space and the outside of the turbulence filter. An extraction device includes a driver, a shaft, and at least one impeller. The shaft is connected to the driver and passes through the top cover to extend into the filter space. The impeller is connected to the shaft and is located in the filter space, adjacent to the bottom of the housing. A lower cover is attached to the bottom of the outer casing. The lower cover forms a flow space communicating with the filter space, and it has several inflow holes that connect the flow space to the outside of the turbulence filter. Several one-way valves are provided on the housing or in several inlet holes of the lower cover, and are connected to the outside of the turbulence filter and the filter space.

2. The turbulence filter as described in claim 1, characterized in that, The housing includes a lower opening located at the bottom of the housing and connecting the filtration space and the flow space. Several one-way valves are respectively located at several inlet holes of the lower cover.

3. The turbulence filter as described in claim 2, characterized in that, It includes a fixing plate that is attached to the lower cover and together with the lower cover clamps the plurality of one-way valves.

4. The turbulence filter as described in claim 1, characterized in that, The housing includes a plurality of spaced-apart through holes, each of which is located at the bottom of the housing and connects the filtration space and the flow space. The plurality of one-way valves are respectively disposed in the plurality of through holes.

5. The turbulence filter as described in claim 4, characterized in that, It includes a fixing plate that is attached to the housing and together with the housing clamps the plurality of one-way valves.

6. The turbulence filter as described in any one of claims 1 to 5, characterized in that, The extraction device includes several protrusions that protrude from the shaft and are spaced apart along a length of the shaft, and the protrusions are located in the filtration space.

7. The turbulence filter as described in any one of claims 1 to 5, characterized in that, The filter assembly includes a positioning net and a filter element. The top of the positioning net is attached to the top cover, and the positioning net includes an annular platform that extends radially inward from the bottom of the positioning net. The filter element is disposed on a top surface of the annular platform.

8. The turbulence filter as described in any one of claims 1 to 5, characterized in that, The filter assembly includes a filter screen containing a plurality of filter holes, each of which is a hole formed by laser drilling.

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