CN220142773U - Self-flushing filter device - Google Patents

Abstract

The utility model relates to a self-flushing filter device comprising: the sewage treatment device comprises a tank body, wherein a sewage outlet is arranged in the tank body and provided with an inner wall for limiting a first channel, and the sewage outlet comprises an inner peripheral wall; the filter screen plate is obliquely arranged, and the lowest point of the filter screen plate is positioned below the sewage outlet; the split hinge comprises a movable plate and a valve plate, wherein the valve plate is provided with a peripheral wall; the overflow pipeline is communicated with the first channel, a pressure valve and a water wheel are arranged in the overflow pipeline, and the water wheel is connected with the movable plate by using a cable; wherein, from washing filter equipment when filtering the position, the periphery wall is connected with the inner peripheral wall, and the valve plate blocks first passageway and drain, and when the water storage position, the fly leaf overlap joint is in the junction of filter screen plate and inner wall, and the top surface of fly leaf and inner wall prescribe a limit jointly the water storage room. According to the self-flushing filtering device provided by the utility model, the water wheel connecting cable is arranged in the overflow pipeline to pull the movable plate to rotate, and meanwhile, the valve plate is controlled to open and close so as to finish self-cleaning of the filter plate, so that the device cost is low and water resources are saved.

Description

Self-flushing filter device

Technical Field

The utility model relates to the field of environmental protection, in particular to a self-flushing filtering device.

Background

The self-cleaning filter technology is a novel filter technology developed at the end of the 70 th century of the 20 th century, has the main advantages of self-operation and self-cleaning by using water pressure, does not stop filtering during cleaning, and has the following characteristics compared with the traditional filter: the degree of automation is high; the pressure loss is small; the filter residue is not required to be manually removed. The self-cleaning filter is suitable for separating and filtering in industrial, agricultural, municipal, sea water desalting process and the like.

The self-cleaning filter is a precise device which directly intercepts impurities in water by utilizing a filter screen, removes suspended matters and particles in the water, reduces turbidity, purifies water quality, reduces the generation of dirt, bacteria and algae, rust and the like of a system, so as to purify the water quality and protect other equipment of the system, and water enters a self-cleaning filter body through a water inlet. The siphon backflushing is that the inner layer impurities of a fine filter screen of the automatic flushing filter device are gradually accumulated, a pressure difference is gradually formed between the inner side and the outer side, a control valve is opened to control the sewage to be discharged after the pressure difference reaches a preset value, and a filter with the flow of 300m3/h is taken as an example: the back flushing flow is 35-40 m3/h, the back flushing time is 7-15 seconds, the back flushing water amount is 80-160L, water resources are wasted, in addition, the flushing by using a water pump also needs to be carried out by controlling a machine pump, the flushing is complicated, the self-flushing filtering and water pump equipment has high cost, and periodic overhauling and maintenance are needed.

Disclosure of Invention

In view of the above, the present utility model aims to solve at least one of the technical problems in the related art to some extent.

To this end, an object of the present utility model is to propose a self-flushing filter device comprising: a tank body (10), wherein a drain outlet (13) is arranged in the tank body (10) and is provided with an inner wall (11) defining a first channel (101), and the drain outlet (13) comprises an inner peripheral wall (131); the filter screen plate (20) is obliquely arranged and connected with the inner wall (11), and the lowest point of the filter screen plate (20) is positioned below the sewage outlet (13); a split hinge (30), wherein the split hinge (30) connected with the inner wall (11) comprises a movable plate (31) and a valve plate (32) connected with the movable plate (31) and opposite in rotation direction, and the valve plate (32) is provided with an outer peripheral wall (321); the overflow pipeline (40) is communicated with the first channel (101), a pressure valve (41) and a water wheel (42) are arranged in the overflow pipeline (40), the water wheel (42) can rotate in the overflow pipeline (40) and has blocking selectivity, and the water wheel (42) is connected with the movable plate (31) by using a cable (43); wherein, from washing filter equipment (500) in filtering position, peripheral wall (321) with inner wall (131) are connected, valve plate (32) separate first passageway (101) with drain (13), in water storage position, fly leaf (31) overlap joint be in filter screen plate (20) with the junction of inner wall (11), top surface (311) of fly leaf (31) with inner wall (11) prescribe a limit to reservoir chamber (102) jointly.

According to the self-flushing filtering device provided by the utility model, the water overflow is utilized to impact the water wheel in the overflow pipeline to drive the movable plate to rotate, the movable plate is opposite to the valve plate in rotation direction, so that the valve plate is controlled to be opened and closed, impurities and sludge on the filter screen plate are flushed by utilizing water flow, a water storage chamber is defined between the movable plate and the inner wall after flushing is finished, the water wheel is driven to reset after the water level in the tank body rises to the overflow water level after rotating, and meanwhile, the valve plate is reset.

In some embodiments, the split hinge (30) comprises a first rotating shaft (34) connected with the movable plate (31) and a second rotating shaft (35) connected with the valve plate (32), the first rotating shaft (34) and the second rotating shaft (35) are collinear and are provided with respective end faces (301), the end faces (301) are circumferentially provided with toothed protrusions (301 a) at intervals, the first rotating shaft (34) and the second rotating shaft (35) are in matched transmission with the respective end faces (301) through gears (36), the movable plate and the valve plate are respectively connected through a plurality of rotating shafts, and gear transmission is used in the middle, so that the split hinge is formed between the movable plate and the valve plate, and further, the valve plate is controlled to rotate downwards while the first channel and the drain are communicated upwards.

In some embodiments, the two first rotating shafts (34) and the two gears (36) are included, the second rotating shaft (35) is arranged between the two first rotating shafts (34), the two gears (346) are arranged between the first rotating shaft (34) and the second rotating shaft (35) and are in transmission fit with the end face (301), and the first rotating shafts are arranged on two sides of the second rotating shaft to drive the second rotating shaft to rotate, so that the second rotating shaft is uniformly stressed, and the split hinge can stably rotate to open and close.

In some embodiments, the overflow pipe (40) comprises a first section (401), a second section (402) and a third section (403), the first section (401) is connected with the tank body (10), the second section (402) is communicated with the first section (401), the third section (403) is communicated with the second section (402), the first section (401) is perpendicular to the second section (402), the second section (402) is perpendicular to the third section (403), and a plurality of sections of pipes are arranged to change the overflow flow direction, so that the water wheel is driven to rotate by water impact.

In some embodiments, the pressure valve (41) is arranged in the first section (401), the water wheel is arranged in the second section (402), the pressure valve is arranged to detect the water pressure in the overflow pipeline, the water pressure can reach the opening threshold value of the pressure generator only after the water level in the tank body rises to a certain height, and the water quantity above the overflow water level is ensured to be enough for the water wheel to rotate for a proper number of turns so as to completely release the cable.

In some embodiments, the second section (402) includes a first hole (402 a), one end of the cable (43) is connected with the water wheel (42), and the other end of the cable is connected with the movable plate (31) through the first hole (402 a), so as to facilitate the connection of the cable with the water wheel in the overflow pipeline and the movable plate in the tank body.

In some embodiments, the device further comprises a pulley (50) connected with the tank or the overflow pipeline, the cable (43) is partially wound on the pulley (50), the pulley is arranged to change the direction of the cable, the cable is connected with the pulley in a rolling way, and friction force is reduced to facilitate the cable to apply tension to the movable plate.

In some embodiments, at least two pulleys (50) are arranged, the cable comprises a fourth section (431) for connecting the water wheel and one of the pulleys and a fifth section (432) for connecting the two pulleys, the fourth section (431) is vertical, and the fifth section (432) is provided with a plurality of pulleys which are beneficial to changing the force application direction of the cable and improving the rotation efficiency of the water wheel driving movable plate.

In some embodiments, the included angle between the filter screen plate (20) and the horizontal plane is between (20 ° -45 °), the inclination angle of the filter screen plate is too large, the filter holes are easily blocked by sundries and are not easy to wash, the water flow rate is too small when the angle is too small for washing, and the washing effect is poor.

In some embodiments, the device further comprises a floating ball device (60) arranged on the inner wall (11), the floating ball device (60) comprises a floating ball (61), a connecting rod (62), a supporting rod (63) and a limiting rod (64), one end of the connecting rod (62) is hinged with the inner wall (11), the other end of the connecting rod is connected with the floating ball (61), one end of the supporting rod (63) is fixed on the inner wall (11), one end of the supporting rod supports the connecting rod (62), the limiting rod (64) is connected onto the connecting rod (62) in the filtering state, the movable plate (31) is lapped on the limiting rod (64), the limiting rod is arranged to limit the rotation of the movable plate, the movable plate is not limited to move upwards only after the water level is higher than the floating ball under the driving of the floating ball, the movable plate is prevented from sliding and falling off to drive the valve plate to be opened under the normal filtering state, and the normal flushing and filtering of the device is affected.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Additional features and advantages of the utility model are described in the following description, which explains the utility model in more detail based on embodiments with reference to the drawings.

Fig. 1 is a schematic view of a self-flushing filtration device in a filtration position according to an embodiment of the utility model.

Fig. 2 is a schematic view of a self-flushing filtration device in a water storage position according to an embodiment of the utility model.

Fig. 3 is a schematic structural view of a split hinge according to an embodiment of the present utility model.

Fig. 4 is a side schematic view of a split hinge according to an embodiment of the present utility model.

Fig. 5 is an enlarged view of the portion a.

Fig. 6 is an enlarged view of the portion B.

Reference numerals illustrate:

500-self-flushing the filter device;

10-a tank body, 101-a vertical channel, 11-an inner wall, 13-a sewage outlet, 131-an inner peripheral wall and 14-a purified water outlet;

20-a filter screen plate;

30-split hinges, 31-movable plates, 311-top surfaces, 32-valve plates, 321-peripheral walls, 301-end surfaces, 301 a-tooth-shaped protrusions, 33-movable plate rotating shafts, 34-valve plate rotating shafts and 35-gears;

40-overflow pipelines, 401-water inlet sections, 402-vertical sections, 403-water outlet sections, 41-pressure valves, 42-water wheels, 43-cables, 431-leading-out sections and 432-transition sections;

50-pulleys;

60-floating ball device, 61-floating ball, 62-connecting rod, 63-supporting rod, 64-limiting rod and 65-stop block.

Detailed Description

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower", "left", "right", "front", "rear" and the like are used herein for illustrative purposes only and are not limiting of the present utility model.

As shown in fig. 1, an embodiment of the present utility model provides a self-flushing filter apparatus 500. Comprising the following steps: a tank 10, wherein a drain 13 is arranged in the tank 10 and is provided with an inner wall 11 defining a vertical channel 101 (as an example of a first channel), the drain 13 comprises an inner peripheral wall 131, the drain is used for communicating the vertical channel 101 and the outside of the tank, the top of the tank is provided with a water inlet 12, and the bottom of the tank is provided with a water outlet 14;

the filter screen 20 is provided with a plurality of filter holes for filtering impurities in the sewage, the filter screen 20 is obliquely arranged and connected with the inner wall 11, and the lowest point of the filter screen 20 is positioned below the sewage outlet 13, in this embodiment, the bottom of the sewage outlet is closely attached to the lowest point of the filter screen;

a split hinge 30, the split hinge 30 connected with the inner wall 11 comprises a movable plate 31 and a valve plate 32 connected with the movable plate 31 and having a reverse rotation direction, the split hinge 30 is hinged on the inner wall, the movable plate and the valve plate can rotate along a hinge shaft, and the valve plate 32 has an outer peripheral wall 321;

the overflow pipeline 40 is communicated with the vertical channel 101, a pressure valve 41 and a water wheel 42 are arranged in the overflow pipeline, the water wheel 42 can rotate in the overflow pipeline 40 and has blocking selectivity, the pressure valve is used for detecting the water pressure in the overflow pipeline, the pressure valve is opened after the water pressure exceeds a certain value, the vertical channel and the overflow pipeline are communicated, the overflow water level and the overflow quantity can be controlled by adjusting the threshold value of the pressure valve, the water wheel is arranged in the pipeline, the water wheel can rotate after water flows through the water wheel, the blocking selectivity indicates that the water wheel rotates to a certain angle and then changes the rotating direction, and the water wheel 42 is connected with the movable plate 31 by using a cable 43 so as to pull the movable plate to rotate around the hinge shaft;

wherein, when the self-flushing filtering device 500 is in the filtering position, the outer peripheral wall 321 is connected with the inner peripheral wall 131, the valve plate 32 blocks the vertical channel 101 from the sewage outlet 13, and when in the water storage position, the movable plate 31 is lapped at the connection position of the filtering screen 20 and the inner wall 11, and the top surface 311 of the movable plate 31 and the inner wall 11 jointly define the water storage chamber 102.

The self-flushing filter 500 provided by the utility model is characterized in that sewage is injected from the upper part of a tank body, an inclined filter screen plate is arranged in the tank body and used for filtering sludge and impurities in the sewage, the sewage flows out of the tank body through the filter screen plate, the sludge and the impurities can be remained on the filter screen plate, the water passing efficiency of the filter screen plate can be gradually reduced, when the water injection amount in the tank body is larger than the water yield, the water level gradually rises to an overflow pipeline, when the water level reaches a certain height, a pressure valve can be automatically opened after the water pressure in the overflow pipeline reaches a threshold value, water in the tank body can flow into the overflow pipeline from the tank body, the water flow can impact a water wheel arranged in the pipeline, the water wheel rotates under the impact and releases a cable wound on the water wheel, a movable plate connected with the cable rotates around a hinge shaft under the self weight, a split hinge structure is arranged between the movable plate and the valve plate, and when the movable plate rotates downwards around the hinge shaft, the valve plate rotates upwards around the hinge shaft, after the valve plate rotates upwards, the outer peripheral wall is not connected with the inner peripheral wall, the sewage drain is communicated with the vertical channel, water which is far above the normal filtering water level in the vertical channel can flow out from the sewage drain, and washes the sludge and impurities accumulated on the obliquely arranged filter screen plate until the movable plate rotates to be connected with the inner wall, the top surface of the movable plate and the inner wall jointly define a water storage chamber, sewage in the tank body is blocked by the movable plate and does not flow onto the filter screen plate any more in the water storage chamber, the water level in the tank body continuously rises until the sewage exceeds the overflow pipeline and flows into the overflow pipeline again after the pressure valve is opened, the water wheel has the blocking selectivity, the rotating direction of the water wheel is changed after the movable plate rotates to the inner wall, the water wheel rotates reversely after the water flow is impacted, the cable is tightened, and the movable plate is lifted again, the water in the vertical channel can flow into the lower part of the filter screen plate and flow out of the tank body after being filtered by the filter screen plate, meanwhile, the movable plate rotates upwards, the valve plate rotates downwards until the outer peripheral wall is completely connected with the inner peripheral wall, the valve plate separates the sewage draining outlet from the vertical channel again, and the self-flushing filtering device returns to the filtering state again.

As shown in fig. 3, the split hinge 30 includes a movable plate rotating shaft 33 (as an example of a first rotating shaft) connected to the movable plate 31 and a valve plate rotating shaft 34 (as an example of a second rotating shaft) connected to the valve plate 32, the movable plate rotating shaft 33 and the valve plate rotating shaft 34 are collinear and have respective end faces 301, the end faces 301 are circumferentially spaced and provided with tooth-shaped protrusions 301a, the movable plate rotating shaft 33 and the valve plate rotating shaft 34 are cooperatively driven with the respective end faces 301 through a gear 35, a rotation center shaft of the gear is perpendicular to the movable plate rotating shaft and the valve plate rotating shaft and the gear is meshed with the tooth-shaped protrusions, rotation of the movable plate is reversely transmitted to the valve plate rotating shaft, so that the rotation direction of the movable plate rotating shaft and the valve plate rotating shaft is opposite, further, when the movable plate rotates down in the hinge axis, the valve plate rotating shaft rotates up in the hinge axis, the valve plate no longer plugs the drain, when the water wheel rotates down in the direction under the water flow impact, the movable plate rotates down in the hinge axis, the valve plate rotating down in the hinge axis, the outer peripheral wall 321 is connected with the inner peripheral wall 131 again, and the valve plate is plugged again.

In this embodiment, the split hinge 30 includes two movable plate rotating shafts 33 and two gears 35, two protruding connecting portions of the edges of the movable plate are connected with the movable plate rotating shafts, the valve plate rotating shaft 34 is disposed between the two movable plate rotating shafts 33, two gears 35 are disposed between the movable plate rotating shafts 33 and the valve plate rotating shaft 34 and are in transmission with the end face 301 in a matched manner, and the two movable plate rotating shafts are disposed on two sides of the valve plate rotating shafts respectively, so that the split hinge is beneficial to overall stable operation when the split hinge is opened and closed, the left side and the right side of the valve plate rotating shaft are simultaneously driven by driving force, and the rotating process is smoother.

As shown in fig. 1 and fig. 2, the overflow pipe 40 includes a water inlet section 401 (as an example of a first section), a vertical section 402 (as an example of a second section), and a water outlet section 403 (as an example of a third section), where the water inlet section 401 is connected to the tank 10, the vertical section 402 is communicated with the water inlet section 401, the water outlet section 403 is communicated with the vertical section 402, the water inlet section 401 is perpendicular to the vertical section 402, the vertical section 402 is perpendicular to the water outlet section 403, the pressure valve 41 is disposed in the water inlet section 401, and the water wheel is disposed in the vertical section 402. The vertical section 402 includes an outlet hole 402a (as an example of a first hole), and the cable 43 has one end connected to the water wheel 42 and the other end connected to the movable plate 31 through the outlet hole 402 a. The cable is connected with the movable plate after penetrating out of the overflow pipeline, and is provided with an outgoing line Kong Liyu outgoing line.

As shown in fig. 1 and 2, the self-flushing filtering device further comprises a pulley 50 connected with the tank or the overflow pipe, the pulley is fixed around the tank, the cable 43 is partially wound on the pulley 50 so as to change the tension direction of the cable, and rolling friction is formed between the pulley and the cable, so that the contraction and expansion of the cable are facilitated, and the service life of the device is prolonged.

In this embodiment, two pulleys are provided, the cable includes a fourth section 431 connecting the water wheel and one of the pulleys and a fifth section 432 connecting the two pulleys, the fourth section 431 is vertical, the fifth section 432 is horizontal, the outer contour of the winding of the pulley closest to the water wheel is collinear with the outer contour of the winding of the water wheel in the tangential direction of the vertical direction, and the cable is wound on the pulley after passing through the wire outlet hole after being released from the water wheel, and is in the vertical direction as a whole, so that the movable plate is pulled by the water wheel.

The filter screen plate is connected with the inner wall, the outer peripheral wall of the valve plate is connected with the inner peripheral wall of the sewage outlet, the movable plate is lapped on the limiting plate, and sealing elements can be arranged at the connecting positions for sealing in order to prevent water leakage during connection of the components.

In a hydraulic transmission system, a hydraulic valve for controlling the oil pressure is called a pressure control valve, and is called a pressure valve for short. The pressure valve in this embodiment is commercially available and can be used for adjusting the pressure of the overflow pipeline and ensuring that the water wheel rotates in place without requiring a specific model, and particularly, the pressure valve is used for ensuring that the pressure valve is contacted with the movable plate from the top end to the bottom end and is clamped on the limiting rod of the floating ball device from the bottom end to the top end.

The included angle between the filter screen plate 20 and the horizontal plane is 20 ° -45 °, the inclination angle of the filter screen plate should be limited, the proper range of the included angle α1 between the filter screen plate and the horizontal plane is (20 ° -45 °), the angle of α1 can be 20 °, 21 °, 22 °, 23 °, 24 °, 25 °, 26 °, 27 °, 28 °, 29 °,30 °,31 °,32 °,33 °,34 °,35 °, 36 °, 37 °, 38 °, 39 °,40 °,41 °,42 °,43 °, 44 °, 45 °, and the inclination angle is too large, the valve can drain water rapidly after opening, but the larger the inclination angle can cause the filter hole to extend in the vertical direction, the water passing area in the vertical direction is reduced, the filter hole is easily blocked by sundries and cannot be washed out, the drainage efficiency is too low after opening the inclination angle is too small, and the flushing effect is poor, in this embodiment, the angle of α1 is 26 °.

As shown in fig. 1 and 2, the self-flushing filter device further comprises a limiting plate, wherein the limiting plate is connected with the inner wall and is positioned above the connection part of the filter screen plate and the inner wall, and the movable plate is connected with the limiting plate when in a water storage position and jointly defines a water storage chamber with the limiting plate and the inner wall.

The floating ball device 60 is arranged on the inner wall 11, the floating ball device 60 comprises a floating ball 61, a connecting rod 62, a supporting rod 63 and a limiting rod 64, one end of the connecting rod 62 is hinged with the inner wall 11, the other end of the connecting rod is connected with the floating ball 61, one end of the supporting rod 63 is fixed on the inner wall 11, one end of the supporting rod 62 is supported, the limiting rod 64 is connected to the connecting rod 62 in a filtering state, the movable plate 31 is in lap joint with the limiting rod 64, after the floating ball device is arranged, the connecting rod integrally extends in the horizontal direction under the support of the supporting rod, the limiting rod is connected to the middle part of the connecting rod, the movable plate is abutted to the limiting rod, the movable plate is limited by the limiting plate and cannot rotate freely, and after the water level in the tank exceeds the floating ball, the connecting rod is driven to rotate upwards by the rising floating ball, and the limiting rod is not limited to rotate.

The following describes the process of filtering impurities in sewage and automatically cleaning the filter screen plate by the self-flushing filter device:

as shown in figure 1, the self-flushing filtering device is in a normal filtering state, a cable is wound on the water wheel, the movable plate is connected with the limiting rod, the outer peripheral wall of the valve is connected with the inner peripheral wall of the sewage outlet, the vertical channel is not communicated with the sewage outlet, sewage is filled from the upper part of the tank body and flows out from the water outlet after being filtered by the filter screen plate, along with the increase of the sewage filtered by the filter screen plate, sludge impurities in the sewage can remain in the filter screen plate and block the filtering holes on the filter screen plate until the water injection amount of the tank body is smaller than the water yield, the water level in the tank body rises, the water flows into the pressure valve from the overflow pipeline, and the pressure valve presets a threshold value to ensure that the overflow amount is enough to drive the water wheel to rotate enough turns to completely release the cable. After the water level rises to a sufficient height, the water pressure in the overflow pipeline reaches a threshold value, the pressure valve is opened, the water pressure in the overflow pipeline is closed after no water flows in the overflow pipeline and waits for the next water pressure in the overflow pipeline to reach the threshold value, the water flows through the water wheels in the overflow pipeline to drive the water wheels to rotate, the cable is released, the floating ball device is in a floating state, the movable plate can freely rotate, the movable plate rotates around the hinge shaft under the action of self gravity after the cable is released, the valve plate rotates and is driven by the gear to rotate upwards and open, the sewage outlet is communicated with the vertical channel, the water flow accumulated on the filter screen plate flows out of the sewage outlet along the top surface of the filter screen plate and simultaneously washes sludge impurities on the filter screen plate, the filter holes of the filter screen plate are dredged until the movable plate rotates to be connected with the limiting plate, the water in the water storage chamber which is jointly limited among the limiting plate, the movable plate and the inner wall cannot flow through the filter screen plate, the water level in the water storage chamber gradually rises, the pressure valve is opened after the water level reaches a certain height, because the water wheel is provided with blocking selectivity, the water wheel can rotate in the opposite direction after receiving the impact of water flow, namely, a cable is rewound on the water wheel, the movable plate returns to an initial state under the pulling of the cable, the rotation direction of the valve plate and the movable plate is opposite, the movable plate rotates upwards, the valve plate rotates downwards, the outer peripheral wall of the valve plate is connected with the inner peripheral wall of the sewage drain outlet again, the valve plate cuts off the vertical channel and the sewage drain outlet, the floating ball device drives the limiting rod to return to the position for limiting the rotation of the movable plate after the water level descends, the self-flushing filtering device normally filters injected sewage at the moment until the sludge blocks the filtering hole of the filter screen plate, and the water injection quantity is smaller than the water outlet quantity, and repeating the above action steps after the water level rises to the height of the overflow pipeline.

Therefore, according to the self-flushing filter device 500 provided by the utility model, the function of automatically flushing the filter plate can be realized, the equipment cost is low, the water consumption is small, the filter plate does not need to be manually cleaned, and the maintenance is simple and convenient.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model.

In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A self-flushing filtration device comprising:

a tank body (10), wherein a drain outlet (13) is arranged in the tank body (10) and is provided with an inner wall (11) defining a first channel (101), and the drain outlet (13) comprises an inner peripheral wall (131);

the filter screen plate (20) is obliquely arranged and connected with the inner wall (11), and the lowest point of the filter screen plate (20) is positioned below the sewage outlet (13);

a split hinge (30), wherein the split hinge (30) connected with the inner wall (11) comprises a movable plate (31) and a valve plate (32) connected with the movable plate (31) and opposite in rotation direction, and the valve plate (32) is provided with an outer peripheral wall (321); a kind of electronic device with high-pressure air-conditioning system

An overflow pipe (40), wherein the overflow pipe (40) is communicated with the first channel (101), a pressure valve (41) and a water wheel (42) are arranged in the overflow pipe, the water wheel (42) can rotate in the overflow pipe (40) and has blocking selectivity, and the water wheel (42) is connected with the movable plate (31) by using a cable (43);

wherein, from washing filter equipment (500) in filtering position, peripheral wall (321) with inner wall (131) are connected, valve plate (32) separate first passageway (101) with drain (13), in water storage position, fly leaf (31) overlap joint be in filter screen plate (20) with the junction of inner wall (11), top surface (311) of fly leaf (31) with inner wall (11) prescribe a limit to reservoir chamber (102) jointly.

2. Self-flushing filtration device according to claim 1, characterized in that said split hinge (30) comprises a first rotation shaft (33) connected to said movable plate (31) and a second rotation shaft (34) connected to said valve plate (32), said first rotation shaft (33) being collinear with said second rotation shaft (34) and having respective end faces (301), said end faces (301) being circumferentially spaced with toothed projections (301 a), said first rotation shaft (33) and said second rotation shaft (34) being in co-transmission with respective end faces (301) through gears (35).

3. Self-flushing filtration device according to claim 2, characterized in that it comprises two said first shafts (33) and two said gears (35), said second shaft (34) being arranged between two said first shafts (33), two said gears (35) being arranged between said first shafts (33) and said second shafts (34) and being in co-operation transmission with said end faces (301).

4. A self-flushing filtration device according to claim 3, characterized in that the overflow conduit (40) comprises a first section (401), a second section (402) and a third section (403), the first section (401) being connected to the tank (10), the second section (402) being in communication with the first section (401), the third section (403) being in communication with the second section (402), the first section (401) being perpendicular to the second section (402), the second section (402) being perpendicular to the third section (403).

5. Self-flushing filtration device according to claim 4, characterized in that the pressure valve (41) is arranged in the first section (401) and the water wheel is arranged in the second section (402).

6. The self-flushing filtration device of claim 5 wherein the second section (402) comprises a first aperture (402 a) and the cable (43) is connected at one end to the water wheel (42) and at the other end to the movable plate (31) through the first aperture (402 a).

7. The self-flushing filtration device of claim 6 further comprising a pulley (50) connected to the tank or overflow conduit, the cable (43) being partially wrapped around the pulley (50).

8. Self-flushing filtration device according to claim 7, characterized in that at least two of said pulleys (50) are provided, said cable comprising a fourth segment (431) connecting said water wheel with one of said pulleys and a fifth segment (432) connecting said two pulleys, said fourth segment (431) being vertical, said fifth segment (432) being horizontal.

9. Self-flushing filtration device according to claim 1, characterized in that the angle between the screen (20) and the horizontal is between (20 ° -45 °).

10. The self-flushing filtering device according to claim 1, further comprising a floating ball device (60) arranged on the inner wall (11), wherein the floating ball device (60) comprises a floating ball (61), a connecting rod (62), a supporting rod (63) and a limiting rod (64), one end of the connecting rod (62) is hinged with the inner wall (11), the other end of the connecting rod is connected with the floating ball (61), one end of the supporting rod (63) is fixed on the inner wall (11), one end of the supporting rod supports the connecting rod (62), the limiting rod (64) is connected on the connecting rod (62), and in the filtering state, the movable plate (31) is lapped on the limiting rod (64).