Self-cleaning screen filter

Abstract

The invention relates to a self-cleaning screen filter which comprises a clear water cavity, a water inlet pipe and a water outlet pipe, a water inlet pipe, a water flow oscillator and a sewage collector are arranged on the side face of the sewage cavity in a communicating mode, the water flow oscillator is right opposite to the sewage collector, and the water inlet pipe and the water flow oscillator are located on the same vertical line; at least two filter screens are connected to the inner side of a cover body of the water retaining cover, a sewage draining exit is formed above each filter screen on the side surface of the water retaining cover, and a water inlet is formed in the side surface, directly facing each sewage draining exit, of the water retaining cover; and a lifting mechanism. Wherein the clear water cavity and the sewage cavity are fastened and connected through threads, and the lifting mechanism is arranged in the sewage cavity and connected with the water retaining cover and the top of the clear water cavity; the water retaining cover is arranged in the sewage cavity in a sliding connection manner, so that the water inlet can be communicated with the water flow oscillator and the sewage outlet can be communicated with the sewage collector in the up-down sliding process of the water retaining cover; the cleaning device is simple and efficient to use, thorough in cleaning, simple in structure and not bloated.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a self-cleaning mesh filter. Background Art

[0002] The screen filter is a commonly used pipeline filtration equipment. It mainly captures solid particles in the fluid through the filter net or filter basket to protect the normal operation of the pipeline and equipment. It can be used to filter various media, such as water, oil, corrosive media, etc. Its main function is to prevent solid particles from entering the lower-level equipment and pipelines to prevent blockage and damage, thereby protecting the normal operation of pumps, nozzles, instruments and other key equipment, and improving the reliability and stability of the system.

[0003] In the prior art, the screen filter has many defects, such as:

[0004] 1. The filter specifications (mesh size, filtration area) in the mesh filter are fixed. As the filtration time increases, more and more impurities are deposited on the filter, which gradually reduces the effective filtration area. This may lead to greater resistance in the pipeline and lower work efficiency. In severe cases, it may even cause pipeline blockage and equipment safety accidents. At this time, cleaning is required;

[0005] 2. The mesh filter is usually connected to the pipeline. When it is blocked, it needs to be unblocked. In order to ensure normal use, the dirt deposited on the filter must be removed regularly. There are two ways to clean the existing filters. One is to shut down the machine and remove the filter for cleaning, and the other is to clean it by semi-automatic or automatic flushing or backwashing through the connection setting of the water pipe. Stopping the machine to remove the filter for cleaning affects the long-term operation of the system, and semi-automatic or automatic flushing or backwashing cleaning will cause complex pipeline design, resulting in overly bloated equipment. Flushing and cleaning by the water flow in the pipe itself is not thorough, and the particulate matter generated by cleaning is not easy to discharge. Summary of the invention

[0006] In order to solve or partially solve the problems existing in the related art, the present application provides a self-cleaning mesh filter, which can be used simply and efficiently, cleaned thoroughly, and has a simple and uncomplicated structure.

[0007] The present application discloses a self-cleaning mesh filter, comprising:

[0008] A clean water chamber, a side of which is connected to a water outlet pipe; and

[0009] A sewage chamber, a water inlet pipe, a water flow oscillator and a sewage collector are connected to the side of the sewage chamber, and the water flow oscillator and the sewage collector are arranged opposite to each other, and the water inlet pipe and the water flow oscillator are located on the same vertical line; and

[0010] A water retaining cover, wherein at least two filter screens are connected to the inner side of the cover body of the water retaining cover, a sewage outlet is constructed above each filter screen on the side of the water retaining cover, and a water inlet is constructed on the side of the water retaining cover facing each sewage outlet; and

[0011] Lifting mechanism;

[0012] The clean water chamber and the sewage chamber are connected by screw thread fastening, and the lifting mechanism is arranged in the sewage chamber and connects the water shield and the top of the clean water chamber;

[0013] The water shield is slidably arranged in the sewage cavity so that the water inlet of the water shield can be connected with the water flow oscillator and the sewage outlet can be connected with the sewage collector during the up and down sliding process of the water shield.

[0014] Optionally, the filter screen includes a first filter screen and a second filter screen, the sewage outlet includes a first sewage outlet and a second sewage outlet, and the water inlet includes a first water inlet and a second water inlet;

[0015] Among them, the first filter screen and the second filter screen are connected and arranged on the inner side of the cover body of the water shield, the first sewage outlet is constructed above the first filter screen on the side of the water shield, and the second sewage outlet is constructed above the second filter screen on the side of the water shield. The first water inlet is constructed on the side of the water shield facing the first sewage outlet, and the second water inlet is constructed on the side of the water shield facing the second sewage outlet; the water shield is slidably arranged in the sewage chamber so that the first water inlet and the second water inlet can be connected with the water flow oscillator during the up and down sliding process of the water shield, and the first sewage outlet and the second sewage outlet can be connected with the sewage collector.

[0016] Optionally, the lifting mechanism includes an electric motor, a screw, and a movable slider. The movable slider is fixedly arranged at the bottom of the water retaining cover, the electric motor is connected to the top outside the sewage chamber, and the screw is connected to the rotating shaft of the electric motor and transferred to the movable slider to construct a screw slider mechanism.

[0017] Optionally, the water inlet and the sewage outlet are arranged close to the top of the filter screen.

[0018] Optionally, the sewage outlet is configured to be in a strip shape.

[0019] Optionally, the sewage collector is configured in a block-like triangular shape, and the opposite side surface of one corner thereof is connected to and communicated with the sewage chamber.

[0020] Optionally, the water flow oscillator is configured to be bottle-shaped, with a water inlet connected to one end of the bottle mouth and a water outlet connected to one end of the bottle bottom, and L-shaped side flow channels are symmetrically arranged on both sides of the bottle mouth, and the other end of the side flow channel is connected to the middle and lower part of the bottle.

[0021] Optionally, the corner of the side flow channel is set to be arc-shaped; the bottom of the water flow oscillator is set to be arc-shaped.

[0022] Optionally, a manual valve is connected to the water inlet end of the water flow oscillator, a manual valve is connected to the water outlet end of the sewage collector, and manual valves are provided on the water inlet pipe and the water outlet pipe.

[0023] Optionally, the manual valve is a solenoid valve, and a controller is provided on the sewage chamber and connected to the electric motor and each solenoid valve.

[0024] The technical solution provided by this application may have the following beneficial effects:

[0025] This device uses a water flow oscillator and a sewage collector to sweep and clean each filter, and uses a lifting mechanism to pull the filter to change its position for easy cleaning. The entire device has only two sets of inlet and outlet water pipes, which can achieve the cleaning of multiple filters and reduce the use of external pipes. At the same time, the overall structure of this application is simple. Through the use of a water flow oscillator, a sewage collector, a lifting mechanism, and a water shield, it can achieve multi-layer filtration without increasing the complex structure of the equipment and is easy to clean, reducing the bloat of the equipment and making it easy to use.

[0026] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0028] Figure 1 It is a structural schematic diagram shown in an embodiment of the present application;

[0029] Figure 2 It is a front view of an embodiment of the present application;

[0030] Figure 3 is a bottom view of an embodiment of the present application;

[0031] Figure 4 is a cross-sectional view taken along the line AA shown in an embodiment of the present application;

[0032] Figure 5 is a BB cross-sectional view of an embodiment of the present application;

[0033] Figure 6 is a CC sectional view of an embodiment of the present application;

[0034] Figure 7 is a DD cross-sectional view of an embodiment of the present application;

[0035] Figure 8This is a simulation diagram of the use of a water flow oscillator shown in an embodiment of the present application;

[0036] Reference numerals:

[0037] 1. Clean water chamber; 11. Water outlet pipe;

[0038] 2. Sewage chamber; 21. Water flow oscillator; 22. Sewage collector; 23. Water inlet pipe; 24. Electric motor; 25. Screw rod; 26. Moving slider;

[0039] 3. Water shield; 31. First sewage outlet; 32. Second sewage outlet; 33. First water inlet; 34. Second water inlet; 35. First filter screen; 36. Second filter screen;

[0040] 211, water inlet end; 212, water outlet end; 213, side channel; 214, oscillation cavity; 215, co-oscillation cavity. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0042] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In view of the above problems, an embodiment of the present application provides a self-cleaning mesh filter. The technical solution of the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0046] like Figure 1 and Figure 2 A self-cleaning mesh filter is shown, comprising:

[0047] A clean water chamber 1 is provided with a water outlet pipe 11 on the side of the clean water chamber 1, and the filtered clean water source is transported to other places through the water outlet pipe 11. The present application also includes a sewage chamber 2, and a water inlet pipe 23 is provided on the side of the sewage chamber 2 to input raw water into the filter. A water flow oscillator 21 and a sewage collector 22 are provided on the side of the sewage chamber 2, and the water flow oscillator 21 and the sewage collector 22 are arranged opposite to each other, and the water inlet pipe 23 and the water flow oscillator 21 are located on the same vertical line. A water flow oscillator is also a fluid oscillator, which can make the liquid passing through it oscillate automatically, similar to a sine function, so as to make the water flow oscillate, thereby achieving the purpose of sweeping and cleaning the particulate impurities on the filter screen, and these impurities are cleaned to the sewage collector 22 and then collected and discharged uniformly. In this way, the filter screen is cleaned thoroughly, and the cleaning efficiency and discharge effect are high. The present application also includes a water shield 3, the inner side of the shield body of the water shield 3 is connected with at least two filter screens, the filter screens are arranged in layers from top to bottom, and different filter meshes are arranged as needed, and sewage outlets are constructed above each filter screen on the side of the water shield 3 to facilitate the discharge of sewage during cleaning, and water inlets are constructed on the side of the water shield 3 facing each sewage outlet to facilitate the inlet of water for cleaning. The present application also includes a lifting mechanism.

[0048] In the present application, the clean water chamber 1 and the sewage chamber 2 are connected by threaded fastening for easy disassembly and maintenance, and a lifting mechanism is arranged in the sewage chamber 2 to search and connect the water shield 3 and the top of the clean water chamber 1; the water shield 3 is slidably arranged in the sewage chamber 2 and allows the water inlet of the water shield 3 to be connected to the water flow oscillator 21 and the sewage outlet to be connected to the sewage collector 22 during the up and down sliding process.

[0049] Thus, in the present application, when in use, the water flow oscillator 21 and the sewage collector 22 are in a closed non-operating state, and the lifting mechanism is in a retracted state. At this time, the sewage enters the sewage chamber 2 from the water inlet pipe 23, and then enters the cover of the water shield 3 through the upper water inlet on the water shield 3, and then is filtered through the filter and output from the water outlet pipe 11. When cleaning is required, the lifting mechanism works, the water shield 3 is pushed down, the water flow oscillator 21 and the sewage collector 22 are opened and connected, the water inlet pipe 23 is closed or blocked by the top partition of the water shield 3, and the water flow oscillator 21 works to sweep and clean the surface of the filter, and the cleaned particles are discharged from the sewage collector 22. After each filter is cleaned, the telescopic mechanism extends a distance until all the filters are cleaned, and then the equipment returns to its position and continues to work.

[0050] This device uses a water flow oscillator 21 and a sewage collector 22 to sweep and clean each filter screen, and uses a lifting mechanism to pull the filter screen to change its position for easy cleaning. The entire device has only two sets of inlet and outlet water pipes, which can achieve the cleaning of multiple filter screens and reduce the use of external pipes. At the same time, the overall structure of this application is simple. Through the use of the water flow oscillator 21, the sewage collector 22, the lifting mechanism and the water shield 3, multi-layer filtration can be achieved without increasing the complex structure of the equipment and it is easy to clean, reducing the bloatedness of the equipment and being easy to use.

[0051] In one embodiment, Figure 3 , Figure 4 , Figure 5 and Figure 6 A self-cleaning mesh filter is shown, wherein the filter screen includes a first filter screen 35 and a second filter screen 36, the sewage outlet includes a first sewage outlet 31 and a second sewage outlet 32, and the water inlet includes a first water inlet 33 and a second water inlet 34;

[0052] Among them, the first filter screen 35 and the second filter screen 36 are connected to the inner side of the cover body of the water shielding cover 3, the first sewage outlet 31 is constructed above the first filter screen 35 on the side of the water shielding cover 3, and the second sewage outlet 32 ​​is constructed above the second filter screen 36 on the side of the water shielding cover 3. The first water inlet 33 is constructed on the side of the water shielding cover 3 facing the first sewage outlet 31, and the second water inlet 34 is constructed on the side of the water shielding cover 3 facing the second sewage outlet 32; the water shielding cover 3 is slidably arranged in the sewage chamber 2 so that the first water inlet 33 and the second water inlet 34 can be connected to the water flow oscillator 21 during the up and down sliding process of the water shielding cover 3, and the first sewage outlet 31 and the second sewage outlet 32 ​​can be connected to the sewage collector 22. The lifting mechanism includes an electric motor 24, a screw 25, and a movable slider 26. The movable slider 26 is fixedly set at the bottom of the water retaining cover 3, and the electric motor 24 is connected to the top of the outside of the sewage chamber 2. The screw 25 is connected to the rotating shaft of the electric motor 24 and transferred to the movable slider 26 to construct a screw slider mechanism.

[0053] Thus, the present application sets up two layers of filter screens, and sets two sewage outlets and water inlets for each of the two layers of filter screens. The entire water retaining cover 3 is pulled up and down by a screw slider mechanism, and the design structure is simple and practical.

[0054] This device uses a water flow oscillator 21 and a sewage collector 22 to sweep and clean the first filter 35 and the second filter 36, and uses an electric motor 24 to drive the screw slider mechanism to pull the entire water shield 3 to move and drive the first filter 35 and the second filter 36 to move up and down for easy cleaning. The entire device has only two sets of inlet and outlet pipes, which can achieve the cleaning of the two filters and reduce the use of external pipes. At the same time, the overall structure of this application is simple. Through the use of the water flow oscillator 21, the sewage collector 22, the lifting mechanism and the water shield 3, multi-layer filtration can be achieved without increasing the complex structure of the equipment and it is easy to clean, reducing the bloatedness of the equipment and being easy to use.

[0055] In one embodiment, Figure 4 , Figure 5 and Figure 6 As shown, the water inlet and the sewage outlet are arranged close to the top of the filter screen to facilitate the sweeping cleaning of the water flow oscillator 21 and the sewage collector 22 to collect and discharge the sewage.

[0056] In one embodiment, Figure 7 As shown, the sewage outlet is arranged in a long strip shape, and the sewage collector 22 is arranged in a block-like triangular shape, and the opposite side surface of one corner thereof is connected and conducted with the sewage chamber 2, so that the collection area is large and the collection and discharge are convenient.

[0057] In one embodiment, Figure 7As shown, the water flow oscillator 21 of the present application is a key cleaning component. In the cleaning process, in order to provide a better agitated water flow, the water flow oscillator 21 of the present application is set to form a coupling cavity in the shape of a bottle, and a water inlet end 211 is connected to one end of the bottle mouth, and a water outlet end 212 is connected to the water inlet end 211 and the bottle bottom end of the same diameter as the water pipe. L-shaped side flow channels 213 or feedback channels are symmetrically arranged on both sides of the bottle mouth, and the other end of the side flow channel 213 is connected to the middle and lower part of the bottle, and the corner of the side flow channel 213 is set to an arc; the bottle-shaped bottom of the water flow oscillator 21, that is, the water outlet, is set to an arc. In this way, the water flow oscillator 21 is composed of only one inlet, one outlet, two feedback channels and one coupling cavity, without any moving or electromagnetic components, and has high stability, robustness and anti-electromagnetic interference capabilities. Affected by the Coanda effect of the fluid, after the main jet enters the coupling cavity, the jet randomly adheres to the wall on one side. Under the action of the coupling cavity, part of the fluid on the wall will enter the feedback channel and form a separation bubble on the other side. The jet entering the coupling cavity pushes the main jet to the wall of the other side of the coupling cavity at the inlet, and this cycle is repeated to form a periodic sweeping jet at the outlet. Through simulation, the oscillation angle of the water flow oscillator 21 of this structure is greater than 90 degrees during use, and there is basically no speed attenuation between the inlet speed and the outlet speed when the liquid oscillates through the oscillator. Figure 8 As shown, the inlet velocity is 15m / s, and the outlet velocity is basically maintained at 15m / s. There is basically no speed attenuation when the liquid oscillates through the oscillator, and the oscillation angle reaches 110°, with a wider oscillation area.

[0058] In one embodiment, in order to facilitate manual semi-automatic cleaning, a manual valve is connected to the water inlet end 211 of the water flow oscillator 21, a manual valve is connected to the water outlet end of the sewage collector 22, and manual valves are provided on the water inlet pipe 23 and the water outlet pipe 11. When in use, semi-automatic cleaning can be achieved by switching the corresponding valves and turning on the power of the top electric motor 24.

[0059] In one embodiment, a more automatic way is to set the manual valve as a solenoid valve, and a controller is provided on the sewage chamber 2 and connected to the electric motor 24 and each solenoid valve. The controller automatically controls the opening and closing of each valve and the automatic action of the electric motor 24 to achieve automatic self-cleaning.

[0060] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0062] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A self-cleaning screen filter, characterized in that: include: A clean water chamber (1), wherein a water outlet pipe (11) is disposed on a side of the clean water chamber (1); and A sewage chamber (2), wherein a water inlet pipe (23), a water flow oscillator (21) and a sewage collector (22) are arranged on the side of the sewage chamber (2), and the water flow oscillator (21) and the sewage collector (22) are arranged opposite to each other, and the water inlet pipe (23) and the water flow oscillator (21) are located on the same vertical line; and A water shield (3), wherein at least two filter screens are connected to the inner side of the shield body of the water shield (3), a sewage outlet is constructed above each filter screen on the side of the water shield (3), and a water inlet is constructed on the side of the water shield (3) facing each sewage outlet; and Lifting mechanism; The clean water chamber (1) and the sewage chamber (2) are connected by screw thread fastening, and the lifting mechanism is arranged in the sewage chamber (2) and connects the water shield (3) and the top of the clean water chamber (1); the water shield (3) is slidably arranged in the sewage chamber (2) and enables the water inlet to be connected to the water flow oscillator (21) and the sewage outlet to be connected to the sewage collector (22) during the up and down sliding of the water shield (3).

2. A self-cleaning mesh filter according to claim 1, characterized in that: The filter screen comprises a first filter screen (35) and a second filter screen (36), the sewage outlet comprises a first sewage outlet (31) and a second sewage outlet (32), and the water inlet comprises a first water inlet (33) and a second water inlet (34); The first filter screen (35) and the second filter screen (36) are connected to the inner side of the cover body of the water shield (3); a first sewage outlet (31) is constructed above the first filter screen (35) on the side of the water shield (3); a second sewage outlet (32) is constructed above the second filter screen (36) on the side of the water shield (3); a first water inlet (33) is constructed on the side of the water shield (3) facing the first sewage outlet (31); and a second water inlet (34) is constructed on the side of the water shield (3) facing the second sewage outlet (32); the water shield (3) is slidably arranged in the sewage chamber (2) so that the first water inlet (33) and the second water inlet (34) can be connected to the water flow oscillator (21) during the upward and downward sliding of the water shield (3); and the first sewage outlet (31) and the second sewage outlet (32) can be connected to the sewage collector (22).

3. A self-cleaning mesh filter according to claim 1, characterized in that: The lifting mechanism comprises an electric motor (24), a screw rod (25), and a movable slider (26); the movable slider (26) is fixedly arranged at the bottom of the water shield (3); the electric motor (24) is connected to the top of the outside of the sewage chamber (2); the screw rod (25) is connected to the rotating shaft of the electric motor (24) and transferred to the movable slider (26) to construct a screw slider mechanism.

4. A self-cleaning mesh filter according to claim 1, characterized in that: The water inlet and the sewage outlet are arranged close to the top of the filter screen.

5. A self-cleaning screen filter according to claim 1 or 4, characterized in that: The sewage outlet is arranged in a strip shape.

6. A self-cleaning screen filter according to claim 1, 2, 3 or 4, characterized in that: The sewage collector (22) is provided in a block-like triangular shape, and the opposite side surface of one corner thereof is connected to and communicated with the sewage chamber (2).

7. The self-cleaning screen filter according to claim 1, characterized in that: The water flow oscillator (21) is configured to be bottle-like in shape, with a water inlet (211) connected to one end of the bottle mouth, a water outlet (212) connected to one end of the bottle bottom, L-shaped side flow channels (213) symmetrically arranged on both sides of the bottle mouth, and the other end of the side flow channel (213) connected to the middle and lower part of the bottle.

8. A self-cleaning screen filter according to claim 7, characterized in that: The corner of the side flow channel (213) is arranged in an arc shape; and the bottom of the water flow oscillator (21) is arranged in an arc shape.

9. The self-cleaning screen filter according to claim 1, characterized in that: The water inlet end (211) of the water flow oscillator (21) is connected to a manual valve, the water outlet end of the sewage collector (22) is connected to a manual valve, and manual valves are provided on the water inlet pipe (23) and the water outlet pipe (11).

10. A self-cleaning screen filter according to claim 9, characterized in that: The manual valve is a solenoid valve, and a controller is provided on the sewage chamber (2) and is connected to the electric motor (24) and each solenoid valve.

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