CN220159402U - Filtering device - Google Patents

Abstract

The utility model discloses a filtering device, which comprises a first filter box, a second filter box, a negative pressure component, a first filtering component and a second filtering component, wherein the first filter box comprises a first inner cavity, a first inlet and a first outlet, and the first inlet and the first outlet are communicated with the first inner cavity; the second filter box comprises a second inner cavity, a second inlet and a second outlet, the second inlet and the second outlet are both communicated with the second inner cavity, and the second inlet can be communicated with the first outlet; the negative pressure component is connected with the second filter box and is used for forming a negative pressure environment in the second inner cavity; the first filter component is detachably arranged in the first inner cavity; the second filter component is detachably arranged at the bottom of the second filter box and is adjacent to the second outlet, and the filtering precision of the second filter component is smaller than that of the first filter component. The filtering device provided by the embodiment of the utility model has the advantages of high filtering efficiency, good filtering effect and the like.

Description

Filtering device

Technical Field

The utility model relates to the technical field of wastewater treatment equipment, in particular to a filtering device.

Background

During construction, a large amount of water is needed, a large amount of sand and other fine particles are mixed after the water is used, the water is directly discharged into a river without treatment to cause serious pollution, and water resources are wasted greatly, so that people can collect the water and filter the water for reuse.

In the prior art, water used in construction engineering is sent to a filtering tank, so that the water automatically flows through a filtering device through gravity flow, and the filtering method is low in filtering speed and low in efficiency. Moreover, the filter element in the filtering device in the prior art is inconvenient to take out, and the filtering efficiency is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides the filter device with high filtering efficiency, and the filter element of the filter device is convenient to detach.

The filtering device of the embodiment of the utility model comprises:

the first filter box comprises a first inner cavity, a first inlet and a first outlet, and the first inlet and the first outlet are communicated with the first inner cavity;

the second filter box comprises a second inner cavity, a second inlet and a second outlet, wherein the second inlet and the second outlet are communicated with the second inner cavity, and the second inlet can be communicated with the first outlet;

the negative pressure assembly is connected with the second filter box and is used for forming a negative pressure environment in the second inner cavity;

the first filter assembly is detachably arranged in the first inner cavity;

the second filter component is detachably arranged at the bottom of the second filter box and is adjacent to the second outlet, and the filter precision of the second filter component is smaller than that of the first filter component.

Therefore, the filtering device provided by the embodiment of the utility model has the advantages of high filtering efficiency, good filtering effect and the like.

In some embodiments, the negative pressure assembly includes a pressure plate movably disposed in the second inner cavity along a first direction, an outer peripheral wall of the pressure plate is attached to an inner wall surface of the inner cavity, and the second inlet is disposed below the pressure plate.

In some embodiments, the negative pressure assembly further comprises:

the connecting rod extends along the first direction, a first threaded hole is formed in the top of the second filter box, the connecting rod is matched with the first threaded hole, and the lower end of the connecting rod is connected with the pressing plate;

the first gear is provided with a second threaded hole, the second threaded hole is matched with the connecting rod, and the first gear can rotate relative to the second filter box;

a second gear meshed with the first gear;

the driving piece is connected with the second gear to drive the second gear to rotate.

In some embodiments, the filter device further comprises a one-way valve disposed between the first outlet and the second inlet, the direction of conduction of the one-way valve being from the first outlet to the second inlet.

In some embodiments, the filtering device further comprises a water level detector and a controller, wherein the water level detector and the driving piece are electrically connected with the controller, the water level detector is arranged in the second inner cavity, the water level detector is used for collecting water level information in the second inner cavity, and the controller is used for receiving and analyzing the information transmitted by the water level detector.

In some embodiments, the second filter assembly is lower than the second inlet, the second filter assembly comprises a support member and a plurality of filter elements, the outer peripheral wall of the support member is in sealing connection with the inner wall surface of the inner cavity, a plurality of channels are formed in the support member, and one filter element is arranged in each channel.

In some embodiments, the second filter box has a first side wall and a second side wall opposite in a second direction, the second direction is orthogonal to the first direction, the first filter box is arranged at one side of the second filter box in the second direction, the first filter box is arranged adjacent to the first side wall, the second inlet is arranged on the first side wall, a third inlet is arranged on the second side wall, and the second filter assembly can enter and exit the second inner cavity through the third inlet.

In some embodiments, the second filter assembly further comprises a locking member, the top of the third inlet being provided with a locking cavity opening towards the support, the locking member comprising:

the sliding block is movably arranged in the supporting piece along the first direction so as to enter and exit the locking cavity, a chute extending obliquely is arranged on the sliding block, the chute is provided with a first end and a second end which are opposite in the second direction, and the first end is higher than the second end;

the elastic piece is arranged at the bottom of the sliding block and connected with the sliding block, and the elastic piece has acting force for promoting the sliding block to enter the locking cavity;

the button is movably arranged on the supporting piece along the second direction, one end of the button is provided with a protrusion facing the sliding block, and the protrusion can be matched with the sliding groove and slide in the sliding groove.

In some embodiments, the first filter box is provided with a first slot and a second slot at intervals along the second direction, the first filter assembly includes a first filter screen and a second filter screen, the first filter screen is detachably arranged in the first slot, and the second filter screen is detachably arranged in the second slot.

In some embodiments, a filter material is filled between the first screen and the second screen.

Drawings

Fig. 1 is a schematic structural view of a filtering apparatus according to an embodiment of the present utility model.

Fig. 2 is a schematic top view of a filter device according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of the filter apparatus of fig. 1.

Fig. 4 is an enlarged schematic view at B in fig. 1.

Fig. 5 is an enlarged schematic view at C in fig. 1.

Reference numerals:

a filtering device 100;

a first filter box 1; a first inlet 11; a first outlet 12;

a second filter tank 2; a second inlet 21; a second outlet 22; a third inlet 23; a first sidewall 24; a second side wall 25; a locking cavity 26;

a first filter assembly 3; a first screen 31; a second screen 32; a filter material 33;

a second filter assembly 4; a support 41; channel 411; a filter element 42; a locking member 43; a slider 431; a chute 4311; an elastic member 432; a button 433;

a negative pressure assembly 5; a pressing plate 51; a link 52; an end 521; a first gear 53; a second gear 54; a driving member 55; a bearing 56; a one-way valve 6.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

As shown in fig. 1 to 5, a filter device 100 of an embodiment of the present utility model includes a first filter tank 1, a second filter tank 2, a negative pressure assembly 5, a first filter assembly 3, and a second filter assembly 4.

The first filter box 1 comprises a first inner cavity, a first inlet 11 and a first outlet 12, and the first inlet 11 and the first outlet 12 are communicated with the first inner cavity.

The second filter box 2 comprises a second inner cavity, a second inlet 21 and a second outlet 22, wherein the second inlet 21 and the second outlet 22 are communicated with the second inner cavity, and the second inlet 21 can be communicated with the first outlet 12.

The negative pressure component 5 is connected with the second filter box 2, and the negative pressure component 5 is used for forming a negative pressure environment in the second inner cavity.

The first filter assembly 3 is detachably disposed in the first interior chamber.

The second filter assembly 4 is detachably arranged at the bottom of the second filter tank 2 and adjacent to the second outlet 22, and the filter accuracy of the second filter assembly 4 is smaller than that of the first filter assembly 3.

For example, the second inlet 21 may be in communication with the first outlet 12 such that the first lumen and the second lumen are in communication.

In operation, the filter device 100 of the present embodiment first closes the first outlet 12 and then flows the construction waste water from the first inlet 11 into the first interior chamber. The negative pressure assembly 5 is then used to create a negative pressure environment in the second cavity, and then the first outlet 12 and the second inlet 21 are connected, so that the waste water rapidly flows through the first filter assembly 3, enters the second cavity, is filtered by the second filter assembly 4, and flows out of the second outlet 22 because the pressure in the first cavity is higher than the pressure in the second cavity.

The filtration precision of second filter component 4 is less than the filtration precision of first filter component 3, and when waste water passes through first filter component 3, large granule impurity etc. in the waste water is filtered by first filter component 3, then waste water when passing through second filter component 4, the tiny particle impurity in the waste water is filtered by second filter component 4.

The first filter component 3 and the second filter component 4 are respectively provided with a filter element, or the second filter component 4 is internally provided with a filter element.

Optionally, the first filter assembly 3 is provided in the first inner cavity by means of a snap-in or plug-in connection.

Optionally, the second filter assembly 4 is disposed in the second inner cavity by means of a snap-fit or plug-in connection.

According to the filtering device 100 provided by the embodiment of the utility model, the negative pressure component 5 is utilized to enable the wastewater to rapidly flow from the first inner cavity to the second inner cavity, so that the flow speed of the wastewater is improved, and the filtering efficiency is further improved.

According to the filtering device 100 provided by the embodiment of the utility model, the first filtering component 3 is designed to be detachable, so that the first filtering component 3 can be taken out in time, and the large-particle impurities on the first filtering component 3 can be cleaned or the first filtering component 3 can be replaced, so that the first filtering component 3 has a good filtering effect. The second filter assembly 4 is designed to be detachable, so that the second filter assembly 4 can be taken out in time, small particle impurities on the second filter assembly 4 can be cleaned or the second filter assembly 4 can be replaced, and the second filter assembly 4 has a good filtering effect.

Therefore, the filtering device 100 of the embodiment of the utility model has the advantages of high filtering efficiency, good filtering effect and the like.

In some embodiments, as shown in fig. 1, the negative pressure assembly 5 includes a pressure plate 51, where the pressure plate 51 is movably disposed in the second inner cavity along the first direction, the outer peripheral wall of the pressure plate 51 is attached to the inner wall surface of the inner cavity, and the second inlet 21 is disposed below the pressure plate 51.

For example, for convenience of description, the up-down direction in fig. 1 is set as the first direction.

The pressing plate 51 is movably arranged in the second inner cavity along the up-down direction, the outer peripheral wall of the pressing plate 51 is made of rubber material, and the outer peripheral wall of the pressing plate 51 is attached to the inner wall surface of the inner cavity so that the pressing plate 51 can be in sealing connection with the inner wall surface of the inner cavity in the up-down moving process. The movable range of the pressing plate 51 is always above the second inlet 21, so that waste water is prevented from entering above the pressing plate 51 to influence the movement of the pressing plate 51.

When the filtering device 100 of the embodiment of the utility model works, the first inner cavity is fully filled with wastewater, then the pressing plate 51 is moved to the lowest end of the movable range, then the second inlet 21 and the second outlet 22 are both closed, then the pressing plate 51 is moved upwards, so that negative pressure is generated in the second inner cavity, then the second inlet 21 and the first outlet 12 are communicated, at the moment, the wastewater in the first inner cavity rapidly flows into the second inner cavity under the action of the pressure, then the second outlet 22 is opened, the wastewater flows through the second filtering component 4, and after the second outlet 22 is opened, the pressing plate 51 is controlled to move downwards so as to squeeze the wastewater, so that the flow speed of the wastewater is improved. When the waste water is filtered, the pressing plate 51 is just under the moving range, at the moment, the second inlet 21 and the second outlet 22 are closed, the pressing plate 51 is controlled to move upwards, and a new round of waste water filtration is started.

In some embodiments, as shown in fig. 1 and 2, the negative pressure assembly 5 further includes a connecting rod 52, a first gear 53, a second gear 54, and a driver 55.

The connecting rod 52 extends along the first direction, a first threaded hole is formed in the top of the second filter box 2, the connecting rod 52 is matched with the first threaded hole, and the lower end of the connecting rod 52 is connected with the pressing plate 51.

The first gear 53 is provided with a second threaded hole, the second threaded hole is matched with the connecting rod 52, and the first gear 53 can rotate relative to the second filter box 2.

The second gear 54 is meshed with the first gear 53.

The driving member 55 is coupled to the second gear 54 to drive the second gear 54 to rotate.

For example, the link 52 extends in the up-down direction, the lower end of the link 52 is rotatably connected to the pressing plate 51, and the upper end of the link 52 is fitted with the first screw hole. The first gear 53 is provided with a second screw hole which is arranged opposite to the first screw hole in the up-down direction. The second gear 54 is driven by the driving member 55, and the driving member 55 drives the second gear 54 to rotate forward or reversely, so that the second gear 54 drives the first gear 53 to rotate forward or reversely when rotating, and the first gear 53 drives the threaded rod to move up and down when rotating, so as to drive the pressing plate 51 to move up and down.

Optionally, a thrust ball bearing is provided between the first gear 53 and the second filter housing 2.

Optionally, a thrust ball bearing is provided between the second gear 54 and the second filter housing 2.

Optionally, the upper end of the connecting rod 52 is a threaded rod, the outer peripheral surface of the portion of the lower end of the connecting rod 52 adjacent to the pressing plate 51 is unthreaded, the lower end of the connecting rod 52 is provided with an end 521 extending radially along the lower end, the upper end of the pressing plate 51 is provided with a groove, the groove comprises a first section and a second section, the first section is arranged at the upper end of the second section, the diameter of the end 521 and the diameter of the first section are sequentially reduced, the end 521 is matched in the second section and is in clearance fit with the second section, and the connecting rod 52 is matched with the first section through a bearing 56. Thus, the connecting rod 52 can drive the pressing plate 51 to move or rotate relative to the pressing plate 51.

In some embodiments, as shown in fig. 1, the filtering device 100 further includes a check valve 6, where the check valve 6 is disposed between the first outlet 12 and the second inlet 21, and a direction of conduction of the check valve 6 is a direction from the first outlet 12 to the second inlet 21.

For example, when a negative pressure is generated in the second inner chamber, a pressure difference occurs between the first inner chamber and the second inner chamber, and when the pressure difference is larger than the opening pressure of the check valve 6, the check valve 6 is conducted, so that the waste water in the first inner chamber can enter the second inner chamber. When the pressure difference is smaller than the opening pressure of the one-way valve 6, the one-way valve 6 is closed so that the waste water in the first inner cavity cannot enter the second inner cavity. Thereby, the communication between the first outlet 12 and the second inlet 21 can be automatically achieved by means of the non-return valve 6.

In some embodiments, the filtering device 100 further includes a water level gauge (not shown) and a controller (not shown), wherein the water level gauge and the driving member 55 are electrically connected to the controller, the water level gauge is disposed in the second inner cavity, the water level gauge is configured to collect water level information in the second inner cavity, and the controller is configured to receive and analyze the information transmitted by the water level gauge.

For example, the controller may control the driving member 55 to drive the second gear 54 to rotate in a forward or reverse direction. The first inlet 11 and the second outlet 22 are respectively provided with an electromagnetic valve, and the controller can control the on-off of the electromagnetic valves so as to control the opening and closing of the first inlet 11 and the second outlet 22.

When the filtering device 100 of the embodiment of the utility model works, firstly, the controller controls the driving piece 55 to rotate forward, so that the pressing plate 51 moves upwards, and then negative pressure is generated in the second inner cavity, after the one-way valve 6 is conducted, the water level detector sends water level information to the controller, when the controller judges that the wastewater in the second inner cavity reaches a preset value, the controller controls the driving piece 55 to rotate reversely, and controls the second outlet 22 to open, so that the pressing plate 51 moves downwards, and then the wastewater is discharged after being filtered quickly.

In some embodiments, as shown in fig. 1 and 4, the second filter assembly 4 is disposed below the second inlet 21, where the second filter assembly 4 includes a support member 41 and a plurality of filter elements 42, the outer peripheral wall of the support member 41 is connected with the inner wall surface of the inner cavity in a sealing manner, and a plurality of channels 411 are disposed on the support member 41, and one filter element 42 is disposed in each channel 411. For example, the waste water in the second chamber is filtered by the filter element 42 in the channel 411 and then flows out of the second outlet 22.

Optionally, the cartridge 42 is removably disposed within the channel 411.

In some embodiments, as shown in fig. 1 and 3, the second filter box 2 has a first side wall 24 and a second side wall 25 opposite in a second direction, the second direction being orthogonal to the first direction, the first filter box 1 is disposed on one side of the second filter box 2 in the second direction, the first filter box 1 is disposed adjacent to the first side wall 24, the second inlet 21 is disposed on the first side wall 24, the second side wall 25 is provided with a third inlet 23, and the second filter assembly 4 is accessible to the second cavity through the third inlet 23.

For example, for convenience of description, the left-right direction in fig. 1 is referred to as a second direction.

The first filter box 1 is arranged on the left side of the second filter box 2, the first side wall 24 of the second filter box 2 is arranged on the left side of the second side wall 25, the second side wall 25 is provided with a third inlet 23, a slot is arranged in the second filter box 2, the supporting piece 41 enters the second filter box 2 from the third inlet 23 and then enters the slot, and the right side wall of the supporting piece 41 is a part of the second side wall 25.

In some embodiments, as shown in fig. 1 and 3, the second filter assembly 4 further includes a locking member 43, the top of the third inlet 23 is provided with a locking cavity 26 opened toward the support 41, the locking member 43 includes a slider 431, an elastic member 432, and a button 433, the slider 431 is movably provided in the support 41 in a first direction so as to enter and exit the locking cavity 26, the slider 431 is provided with a chute 4311 extending obliquely, the chute 4311 has a first end and a second end opposite to each other in a second direction, and the first end is provided higher than the second end.

An elastic member 432 is provided at the bottom of the slider 431 and connected to the slider 431, and the elastic member 432 has a force urging the slider 431 into the lock chamber 26.

The button 433 is movably provided on the support 41 in the second direction, and one end of the button 433 is provided with a protrusion toward the slide 431, which is engaged with the slide groove 4311 and slides in the slide groove 4311.

For example, the top wall of the third inlet 23 is provided with a locking cavity 26 with a downward opening, the support 41 is provided with a third inner cavity opposite to the locking cavity 26, the third inner cavity extends in the up-down direction, the slide 431 is slidably arranged in the third inner cavity, the slide 431 can move in the up-down direction, and when the second filter assembly 4 is installed in the slot, the slide 431 is opposite to the locking cavity 26, so that the slide 431 can enter the locking cavity 26, thereby fixing the second filter assembly 4 in the second filter box 2.

The chute 4311 extends from the upper left to the lower right. The elastic member 432 is disposed at the bottom of the slider 431, and the elastic member 432 is a compression spring.

The locking member 43 has a locked state in which the slider 431 extends into the locking cavity 26 and a released state in which the second filter assembly 4 is not removable. In the released state, the slide 431 is disengaged from the locking cavity 26, at which point the second filter assembly 4 is removable.

In the locked state, the spring applies an upward elastic force to the slide 431, and at this time, the top of the slide 431 enters the locking cavity 26, and the right end of the chute 4311 is engaged with the protrusion.

In the released state, the button 433 is pressed, the button 433 moves leftwards, the protrusion is driven to move leftwards, and only left and right movement is caused because the protrusion does not move up and down, and when the protrusion moves leftwards, the downward component of the acting force applied by the protrusion to the sliding groove 4311 causes the sliding groove 4311 to move downwards, so that the top of the sliding block 431 is separated from the locking cavity 26.

Optionally, the upper left corner of the slide 431 is chamfered, thereby facilitating access to the locking cavity 26.

When the second filter assembly 4 is detached from the second filter box 2, the button 433 is released, the upward force exerted by the spring on the slide block 431 causes the slide block 431 to move upward, after the filter element 42 is replaced, the second filter assembly 4 is directly pushed into the second filter box 2 at this time due to the chamfer angle at the upper left corner of the slide block 431, and the slide block 431 automatically moves downward after being pressed by the top wall of the third inlet 23 until the locking cavity 26 appears above, so that the slide block 431 pops up, thereby locking the second filter assembly 4 in the second filter box 2.

In some embodiments, as shown in fig. 1, a first slot and a second slot are disposed on the first filter box 1 at intervals along the second direction, the first filter assembly 3 includes a first filter screen 31 and a second filter screen 32, the first filter screen 31 is detachably disposed in the first slot, and the second filter screen 32 is detachably disposed in the second slot.

For example, the first filter box 1 is provided with a first slot and a second slot along the left-right direction, the first filter screen 31 is provided in the first slot, and the second filter screen 32 is provided in the second slot. Thereby, the disassembly of the first screen 31 and the second screen 32 is facilitated.

Optionally, in other embodiments, sealing covers are further provided at the openings of the first slot and the second slot, so that the openings of the first slot and the second slot can be sealed.

The wastewater in the first filter tank 1 flows from left to right, and the first inlet 11 is provided at the upper left of the first filter tank 1. The first outlet 12 is provided in the lower right of the first lumen.

In some embodiments, as shown in fig. 1, a filter material 33 is filled between the first screen 31 and the second screen 32.

For example, the filter material 33 is a filter plate with holes.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

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 at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically 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; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. 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.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean 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 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should 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 of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A filter device, comprising:

the first filter box comprises a first inner cavity, a first inlet and a first outlet, and the first inlet and the first outlet are communicated with the first inner cavity;

the second filter box comprises a second inner cavity, a second inlet and a second outlet, wherein the second inlet and the second outlet are communicated with the second inner cavity, and the second inlet can be communicated with the first outlet;

the negative pressure assembly is connected with the second filter box and is used for forming a negative pressure environment in the second inner cavity;

the first filter assembly is detachably arranged in the first inner cavity;

the second filter component is detachably arranged at the bottom of the second filter box and is adjacent to the second outlet, and the filter precision of the second filter component is smaller than that of the first filter component.

2. The filter device of claim 1, wherein the negative pressure assembly comprises a pressure plate movably disposed in the second interior cavity in a first direction, an outer peripheral wall of the pressure plate being in engagement with an inner wall surface of the interior cavity, and the second inlet being disposed below the pressure plate.

3. The filter arrangement of claim 2, wherein the negative pressure assembly further comprises:

the connecting rod extends along the first direction, a first threaded hole is formed in the top of the second filter box, the connecting rod is matched with the first threaded hole, and the lower end of the connecting rod is connected with the pressing plate;

the first gear is provided with a second threaded hole, the second threaded hole is matched with the connecting rod, and the first gear can rotate relative to the second filter box;

a second gear meshed with the first gear;

the driving piece is connected with the second gear to drive the second gear to rotate.

4. A filter device according to claim 3, further comprising a one-way valve disposed between the first outlet and the second inlet, the direction of conduction of the one-way valve being from the first outlet to the second inlet.

5. The filter device of claim 4, further comprising a water level gauge and a controller, wherein the water level gauge and the driver are each electrically connected to the controller, wherein the water level gauge is disposed in the second interior cavity, wherein the water level gauge is configured to collect water level information in the second interior cavity, and wherein the controller is configured to receive and analyze information transmitted by the water level gauge.

6. The filter device of claim 5, wherein the second filter assembly is disposed below the second inlet, the second filter assembly comprises a support member and a plurality of filter elements, the outer peripheral wall of the support member is in sealing connection with the inner wall surface of the inner cavity, the support member is provided with a plurality of channels, and each channel is internally provided with one filter element.

7. The filter apparatus of claim 6, wherein the second filter housing has first and second opposite side walls in a second direction, the second direction being orthogonal to the first direction, the first filter housing being disposed on a side of the second filter housing in the second direction, the first filter housing being disposed adjacent the first side wall, the second inlet being disposed on the first side wall, the second side wall being provided with a third inlet, the second filter assembly being accessible to the second interior chamber through the third inlet.

8. The filter apparatus of claim 7, wherein the second filter assembly further comprises a locking member, a top of the third inlet is provided with a locking cavity opening toward the support, the locking member comprising:

the sliding block is movably arranged in the supporting piece along the first direction so as to enter and exit the locking cavity, a chute extending obliquely is arranged on the sliding block, the chute is provided with a first end and a second end which are opposite in the second direction, and the first end is higher than the second end;

the elastic piece is arranged at the bottom of the sliding block and connected with the sliding block, and the elastic piece has acting force for promoting the sliding block to enter the locking cavity;

the button is movably arranged on the supporting piece along the second direction, one end of the button is provided with a protrusion facing the sliding block, and the protrusion can be matched with the sliding groove and slide in the sliding groove.

9. The filtering device according to claim 7 or 8, wherein the first filter box is provided with a first slot and a second slot which are arranged at intervals along the second direction, the first filter assembly comprises a first filter screen and a second filter screen, the first filter screen is detachably arranged in the first slot, and the second filter screen is detachably arranged in the second slot.

10. The filter device of claim 9, wherein a filter material is filled between the first screen and the second screen.