Self-cleaning filter

Abstract

A self-cleaning filter comprises a filter shell, a filter screen is arranged in the filter shell, a containing space is arranged below the filter screen, and a sweeper is arranged in the filter screen. A leading-out valve is arranged on the filter shell below the accommodating space, the leading-in pipeline is communicated with the filter shell, and the leading-out pipeline extends into the filter screen. The mode that the sweeper is arranged in the filter screen is adopted, in the using process, the filter screen can be cleaned through the sweeper, impurities can sink into the containing space in the using process, and when piezoresistance is large, impurity guiding-out in a short time can be achieved through the guiding-out valve.

Description

Technical Field

[0001] The present application relates to a self-cleaning filter. Background Art

[0002] In the process of sewage purification, since there are many impurities in the sewage, the filter is easily blocked during the filtration process, so ordinary filters cannot be used for sewage filtration. Now there is a solution to use the filter in a one-in-one-standby manner, that is, since the filter is prone to blockage, the standby filter is cleaned when in use. After the standby filter is cleaned, when the pressure drop of the filter in use exceeds the set threshold, it is transferred to the standby filter, and so on, continuous operation can be achieved, but the operating cost of this operation mode is extremely high, and it requires real-time monitoring by the operator. Utility Model Content

[0003] In order to solve the above problems, the present application proposes a self-cleaning filter, including a filter housing, a filter screen arranged in the filter housing, a receiving space arranged below the filter screen, a cleaner arranged in the filter screen; an outlet valve is arranged on the filter housing below the receiving space, an inlet pipe is connected to the filter housing, and the outlet pipe extends into the filter screen. The present application adopts the method of arranging a cleaner in the filter screen. During use, the cleaner can be used to clean the filter screen, and impurities can be sunk into the receiving space during use. When the pressure resistance is large, the impurities can be discharged in a short time through the outlet valve.

[0004] Preferably, the cleaner includes a central support shaft, and two upper and lower support brackets are arranged on the side of the central support shaft, and a plurality of vertical cleaning rods are arranged between the support brackets, and cleaning brushes are arranged on the vertical cleaning rods, and the position of the cleaning brushes is arranged in coordination with the filter. The cleaner of the present application is built into the filter, so that during use, the filter can be cleaned in time according to needs or settings, and the overall structure of the cleaner is relatively stable and can be used for a long time.

[0005] Preferably, the end of the central support shaft is connected to a cleaning motor, the cleaning motor is fixedly mounted on a lifting frame, a lifting piston cylinder is arranged below the lifting frame, and the lifting piston rod extends out of the lifting piston cylinder and is fixedly mounted on the lifting frame. The present application realizes the lifting and lowering of the central support shaft by lifting the piston rod, so that the cleaning brush can fully contact the filter screen up and down to ensure the cleaning effect.

[0006] Preferably, the filter screen is a cylinder, comprising an annular filter plate arranged in an annular shape and a bottom filter plate arranged at the bottom of the annular filter plate.

[0007] Preferably, the central support shaft is arranged at the center of the annular filter plate, the support bracket is an annular bracket, and the number of the vertical cleaning rods is not less than 6 and they are evenly distributed between the support brackets.

[0008] Preferably, the outlet valve is a gate valve.

[0009] Preferably, the filter screen comprises a filter screen body, the filter screen body is provided with evenly distributed filter holes, and a filter metal mesh is provided on the filter holes.

[0010] This application can bring the following beneficial effects:

[0011] 1. This application adopts a method of setting a sweeper in the filter. During use, the sweeper can be used to clean the filter, and impurities can be sunk into the containing space during use. When the pressure resistance is large, the impurities can be exported in a short time through the export valve.

[0012] 2. The cleaner of the present application is built into the filter, so that during use, the filter can be cleaned in a timely manner according to needs or settings. The overall structure of the cleaner is also relatively stable and can be used for a long time.

[0013] 3. The present application realizes the lifting and lowering of the central support shaft by lifting the piston rod, so that the cleaning brush can fully contact the filter screen up and down to ensure the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 A schematic diagram of the local structure of the filter. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of the present solution, the present application is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0018] In the first embodiment, if Figure 1 As shown, a self-cleaning filter comprises a filter housing 1, a filter screen 2 is arranged in the filter housing 1, a receiving space 3 is arranged below the filter screen 2, and a cleaner 4 is arranged in the filter screen 2; an outlet valve 5 is arranged on the filter housing 1 below the receiving space 3, an inlet pipe 6 is connected to the filter housing 1, and a outlet pipe 7 extends into the filter screen 2.

[0019] When in use, sewage is introduced from the inlet pipe 6, filtered through the filter screen 2 and enters the inside of the filter screen 2, and then discharged from the outlet pipe 7. During this process, impurities accumulate in the accommodating space 3. When the pressure drop is large, the filter screen 2 is cleaned by the cleaner 4. If the pressure drop still does not decrease after cleaning, the inlet pipe 6 and the outlet pipe 7 are closed, and the outlet valve 5 is opened to discharge the internal impurities.

[0020] In the second embodiment, if Figure 1-2 As shown, a self-cleaning filter comprises a filter housing 1, a filter screen 2 is arranged in the filter housing 1, a receiving space 3 is arranged below the filter screen 2, and a cleaner 4 is arranged in the filter screen 2; a discharge valve 5 is arranged on the filter housing 1 below the receiving space 3, an inlet pipe 6 is connected with the filter housing 1, and a discharge pipe 7 extends into the filter screen 2. The cleaner 4 comprises a central support shaft 8, two support brackets 9 arranged up and down are arranged on the side of the central support shaft 8, a plurality of vertical cleaning rods 10 arranged vertically are arranged between the support brackets 9, and a cleaning brush 11 is arranged on the vertical cleaning rod 10, and the position of the cleaning brush 11 is arranged in coordination with the filter screen 2. The end of the central support shaft 8 is connected to a cleaning motor 12, and the cleaning motor 12 is fixedly arranged on a lifting frame 13, and a lifting piston cylinder 14 is arranged below the lifting frame 13, and a lifting piston rod 15 extends out of the lifting piston cylinder 14 and is fixedly connected to the lifting frame 13. Some guide rods can be arranged around the lifting piston rod 15. The filter screen 2 is a cylinder, including an annular filter plate 16 and a bottom filter plate 17 arranged at the bottom of the annular filter plate 16. The central support shaft 8 is arranged at the center of the annular filter plate 16, the support bracket 9 is an annular bracket, and the number of vertical cleaning rods 10 is not less than 6 and is evenly distributed between the support brackets 9. The outlet valve 5 is a gate valve. The filter screen 2 includes a filter screen body 18, on which filter holes 19 are evenly distributed, and a filter metal mesh 20 is arranged on the filter holes 19.

[0021] When in use, sewage is introduced from the inlet pipe 6, filtered by the filter screen 2 and enters the inside of the filter screen 2, and then discharged from the outlet pipe 7. During this process, impurities accumulate in the accommodating space 3. When the pressure drop is large, the filter screen 2 is cleaned by the cleaner 4. When cleaning, the lifting piston rod 15 drives the cleaning motor 12, the cleaning motor 12 drives the central support shaft 8, and the central support shaft 8 drives the vertical cleaning rod 10 and the cleaning brush 11 to reciprocately clean the filter screen 2; if the pressure drop still does not decrease after cleaning, the inlet pipe 6 and the outlet pipe 7 are closed, and the outlet valve 5 is opened to discharge the internal impurities.

[0022] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A self-cleaning filter, characterized in that: It includes a filter housing, a filter screen is arranged in the filter housing, a receiving space is arranged below the filter screen, and a cleaner is arranged in the filter screen; an outlet valve is arranged on the filter housing below the receiving space, an inlet pipe is connected with the filter housing, and the outlet pipe extends into the filter screen.

2. A self-cleaning filter according to claim 1, characterized in that: The cleaner includes a central support shaft, and two upper and lower support brackets are arranged on the side of the central support shaft. A plurality of vertical cleaning rods are arranged vertically between the support brackets, and cleaning brushes are arranged on the vertical cleaning rods. The position of the cleaning brush is coordinated with the filter screen.

3. A self-cleaning filter according to claim 2, characterized in that: The end of the central support shaft is connected to a cleaning motor power, and the cleaning motor is fixedly arranged on a lifting frame. A lifting piston cylinder is arranged below the lifting frame, and a lifting piston rod extends out of the lifting piston cylinder and is fixedly connected to the lifting frame.

4. A self-cleaning filter according to claim 3, characterized in that: The filter screen is a cylinder, comprising an annular filter plate arranged in an annular shape and a bottom filter plate arranged at the bottom of the annular filter plate.

5. A self-cleaning filter according to claim 3, characterized in that: The central support shaft is arranged at the center of the annular filter plate, the support bracket is an annular bracket, and the number of the vertical cleaning rods is not less than 6 and they are evenly distributed between the support brackets.

6. A self-cleaning filter according to claim 1, characterized in that: The outlet valve is a gate valve.

7. A self-cleaning filter according to claim 1, characterized in that: The filter screen comprises a filter screen body, on which filter screen body are arranged filter holes evenly distributed, and on which filter metal mesh is arranged.

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