阅读说明：本技术 过滤机构及过滤器 (Filtering mechanism and filter ) 是由 李继 焦恒恒 徐志亮 于 2020-07-07 设计创作，主要内容包括：本发明涉及一种过滤机构及过滤器,过滤机构包括：第一过滤组件和第二过滤组件,第一过滤组件包括相对设置的两层过滤网,第一过滤组件的两层过滤网之间设置有第一流道；第二过滤组件包括相对设置的两层过滤网,第二过滤组件的两层过滤网之间设置有第二流道,第二过滤组件的其中一层过滤网与第一过滤组件的其中一层过滤网临近设置,以使第二流道与第一流道临近设置；污水原水能够在沿第一方向流动穿过第一流道时得到浓水,通过污水原水和浓水之间形成的压力差,以使污水原水经第一过滤组件和第二过滤组件各自临近对方的一层过滤网过滤后得到的清水进入第二流道,并使清水沿与第一方向垂直的第二方向流动穿过第二流道。(The invention relates to a filtering mechanism and a filter, wherein the filtering mechanism comprises: the filter comprises a first filter assembly and a second filter assembly, wherein the first filter assembly comprises two layers of filter screens which are oppositely arranged, and a first flow passage is arranged between the two layers of filter screens of the first filter assembly; the second filter assembly comprises two layers of filter screens which are oppositely arranged, a second flow channel is arranged between the two layers of filter screens of the second filter assembly, one layer of filter screen of the second filter assembly is arranged adjacent to one layer of filter screen of the first filter assembly, so that the second flow channel is arranged adjacent to the first flow channel; the raw sewage can obtain concentrated water when flowing through the first flow channel along the first direction, and clear water obtained after the raw sewage is filtered by the first filter assembly and the second filter assembly which are respectively close to the filter screens of the opposite side enters the second flow channel through the pressure difference formed between the raw sewage and the concentrated water, and the clear water flows through the second flow channel along the second direction which is vertical to the first direction.)

1. A filter mechanism, comprising:

the first filter assembly comprises two layers of filter screens which are arranged oppositely, and a first flow passage is arranged between the two layers of filter screens of the first filter assembly; and

the second filter assembly comprises two layers of filter screens which are oppositely arranged, a second flow channel is arranged between the two layers of filter screens of the second filter assembly, one layer of filter screen of the second filter assembly is arranged adjacent to one layer of filter screen of the first filter assembly, so that the second flow channel is arranged adjacent to the first flow channel; raw sewage can flow along the first direction and pass first runner obtains dense water, through raw sewage with the pressure differential that forms between the dense water, can make raw sewage produce and pass first filter element with the second filter element is close to the one deck of the other side respectively the power of filter screen, thereby so that raw sewage warp first filter element with the second filter element is close to the one deck of the other side respectively the clear water that obtains after the filter screen filters gets into the second runner, and make the clear water flow along with first direction vertically second direction passes the second runner.

2. The filter mechanism of claim 1, wherein the first filter assembly further comprises a first seal member sealingly disposed at both ends of the first flow passage in the second direction.

3. The filter mechanism of claim 1, wherein the second filter assembly further comprises a second seal member sealingly disposed at both ends of the second flow passage in the first direction.

4. The filter mechanism of claim 1, wherein at least one of the first filter assembly and the second filter assembly comprises a plurality of sets, wherein a plurality of sets of the first filter assembly are sequentially alternated and adjacently disposed with at least one set of the second filter assembly or at least one set of the first filter assembly is sequentially alternated and adjacently disposed with a plurality of the first flow passages and at least one of the second flow passages or at least one of the first flow passages and a plurality of the second flow passages.

5. The filter mechanism of claim 1, wherein the first flow channels are equally spaced in a third direction from the second flow channels, and wherein the third direction, the second direction, and the first direction are perpendicular to one another.

6. The filter mechanism according to claim 1, wherein the raw sewage water can flow through the first flow passage in one direction in a positive direction or a negative direction of the first direction, and the clean water can flow through the second flow passage in both the positive direction and the negative direction of the second direction at the same time.

7. The filter mechanism according to claim 1, wherein a pressure difference is formed between the raw sewage and the concentrated water by adjusting a water level difference or a water level difference between the raw sewage and the concentrated water.

8. The filter mechanism of claim 1, further comprising at least one of:

the frame is used for assembling and fixing the first filter assembly and the second filter assembly;

a water storage chamber for receiving the fresh water; and

a water bucket for adjusting the water quantity of the clean water.

9. The filter mechanism of claim 1, further comprising at least one of:

a main water inlet pipe for injecting the raw sewage into the filtering mechanism;

the main water outlet pipe is used for allowing the clean water to flow out of the filtering mechanism;

a backwashing water inlet pipe for injecting backwashing cleaning water into the filtering mechanism;

a backwashing water outlet pipe used for enabling sewage obtained after backwashing to flow out of the filtering mechanism;

a concentrated water outlet pipe for the obtained concentrated water to flow out of the filtering mechanism; and

an overflow pipe for excess clean water to flow out of the filtering mechanism.

10. A filter, comprising: a filter mechanism according to any one of claims 1 to 9 and a sump in which the filter mechanism is housed.

Technical Field

The invention relates to the technical field of environmental protection, in particular to a filtering mechanism and a filter.

Background

When the traditional filter is used, corresponding facilities such as a clean water tank, a lift pump and the like are required to be equipped for combined use to achieve the effect of effectively removing impurities in sewage, so that the operating cost and the manufacturing cost of the filter can be greatly increased.

Disclosure of Invention

In view of the above, it is desirable to provide a filter mechanism and a filter having a simple structure and low cost.

A filter mechanism comprising:

the first filter assembly comprises two layers of filter screens which are arranged oppositely, and a first flow passage is arranged between the two layers of filter screens of the first filter assembly; and

the second filter assembly comprises two layers of filter screens which are oppositely arranged, a second flow channel is arranged between the two layers of filter screens of the second filter assembly, one layer of filter screen of the second filter assembly is arranged adjacent to one layer of filter screen of the first filter assembly, so that the second flow channel is arranged adjacent to the first flow channel; raw sewage can flow along the first direction and pass first runner obtains dense water, through raw sewage with the pressure differential that forms between the dense water, can make raw sewage produce and pass first filter element with the second filter element is close to the one deck of the other side respectively the power of filter screen, thereby so that raw sewage warp first filter element with the second filter element is close to the one deck of the other side respectively the clear water that obtains after the filter screen filters gets into the second runner, and make the clear water flow along with first direction vertically second direction passes the second runner.

In one embodiment, the first filter assembly further comprises a first sealing member, and the first sealing member is arranged at two ends of the first flow passage in the second direction in a sealing manner.

In one embodiment, the second filter assembly further comprises a second sealing member, and the second sealing member is arranged at two ends of the second flow passage in the first direction in a sealing manner.

In one embodiment, at least one of the first filter assembly and the second filter assembly comprises a plurality of groups, and a plurality of groups of the first filter assemblies and at least one group of the second filter assemblies or at least one group of the first filter assemblies and a plurality of groups of the second filter assemblies are sequentially, alternately and adjacently arranged, so that a plurality of the first flow passages and at least one of the second flow passages or at least one of the first flow passages and a plurality of the second flow passages are sequentially, alternately and adjacently arranged.

In one embodiment, the distance between the first flow channels in the third direction is equal to the distance between the second flow channels in the third direction, and the third direction, the second direction and the first direction are perpendicular to each other.

In one embodiment, the raw sewage can flow through the first flow channel in a single direction in a positive direction or a negative direction of the first direction, and the clean water can flow through the second flow channel in both the positive direction and the negative direction of the second direction.

In one embodiment, the pressure difference between the raw sewage and the concentrated water is formed by adjusting the water level difference or the water level difference between the raw sewage and the concentrated water.

In one embodiment, the method further comprises at least one of the following steps:

the frame is used for assembling and fixing the first filter assembly and the second filter assembly;

a water storage chamber for receiving the fresh water; and

a water bucket for adjusting the water quantity of the clean water.

In one embodiment, the method further comprises at least one of the following steps:

a main water inlet pipe for injecting the raw sewage into the filtering mechanism;

the main water outlet pipe is used for allowing the clean water to flow out of the filtering mechanism;

a backwashing water inlet pipe for injecting backwashing cleaning water into the filtering mechanism;

a backwashing water outlet pipe used for enabling sewage obtained after backwashing to flow out of the filtering mechanism;

a concentrated water outlet pipe for the obtained concentrated water to flow out of the filtering mechanism; and

an overflow pipe for excess clean water to flow out of the filtering mechanism.

A filter, comprising: the filtering mechanism is contained in the water collecting tank.

In the filtering mechanism, a first flow channel is arranged between two layers of filtering nets of the first filtering component, a second flow channel is arranged between two layers of filtering nets of the second filtering component, one layer of filtering net of the second filtering component is arranged close to one layer of filtering net of the first filtering component so that the second flow channel is arranged close to the first flow channel, the raw sewage can obtain concentrated water when flowing through the first flow channel along a first direction, the raw sewage can generate power for passing through the first filtering component and the second filtering component respectively close to the other layer of filtering net through the pressure difference formed between the raw sewage and the concentrated water, so that clean water obtained after the raw sewage is filtered by the first filtering component and the second filtering component respectively close to the other layer of filtering net enters the second flow channel, and the clean water flows through the second flow channel along a second direction perpendicular to the first direction, thereby achieving the purpose of effectively removing impurities in the sewage and ensuring that the effluent quality of the sewage reaches the standard; therefore, the filtering mechanism is simple in structure, and can effectively avoid the arrangement of filtering supporting facilities such as a clean water tank and a lifting pump, so that the investment cost, the operation energy consumption and the operation management difficulty are reduced, and the sewage purification treatment cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a portion of a filter mechanism according to an embodiment;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a simplified diagram of the structure of a filter mechanism in one embodiment;

FIG. 4 is a schematic diagram of the filter mechanism in one embodiment;

FIG. 5 is a schematic diagram of a filter according to an embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the filter mechanism 100 in one embodiment includes a first filter assembly 110 and a second filter assembly 120, the first filter assembly 110 includes two layers of filter screens 111 disposed oppositely, and a first flow channel 112 is disposed between the two layers of filter screens 111 of the first filter assembly 110; the second filter assembly 120 includes two layers of filter screens 111 disposed oppositely, a second flow path 121 is disposed between the two layers of filter screens 111 of the second filter assembly 120, one layer of filter screen 111 of the second filter assembly 120 is disposed adjacent to one layer of filter screen 111 of the first filter assembly 110, so that the second flow channel 121 is disposed adjacent to the first flow channel 112, the raw sewage can be concentrated while flowing through the first flow channel 112 in the first direction, and by a pressure difference formed between the raw sewage and the concentrated water, can make the sewage raw water generate power to pass through the filter screen 111 of the first filter assembly 110 and the second filter assembly 120 which are adjacent to each other, therefore, the clean water obtained by filtering the raw sewage through the filter screen 111 of the layer adjacent to the first filter assembly 110 and the second filter assembly 120 enters the second flow channel 121, and the clean water flows through the second flow channel 121 along the second direction perpendicular to the first direction.

In the filtering mechanism 100, the first flow passage 112 is disposed between the two layers of filtering nets 111 of the first filtering assembly 110, the second flow passage 121 is disposed between the two layers of filtering nets 111 of the second filtering assembly 120, one layer of filtering net 111 of the second filtering assembly 120 is disposed adjacent to one layer of filtering net 111 of the first filtering assembly 110, so that the second flow passage 121 is disposed adjacent to the first flow passage 112, the raw sewage can obtain the concentrated water when flowing through the first flow passage 112 along the first direction, the raw sewage can generate the power for passing through the respective adjacent layers of filtering nets 111 of the first filtering assembly 110 and the second filtering assembly 120 by the pressure difference formed between the raw sewage and the concentrated water, so that the raw sewage enters the second flow passage 121 after being filtered by the respective adjacent layers of filtering nets 111 of the first filtering assembly 110 and the second filtering assembly 120, and the clean water flows through the second flow passage 121 along the second direction perpendicular to the first direction, thereby achieving the purpose of effectively removing impurities in the sewage and ensuring that the effluent quality of the sewage reaches the standard; therefore, the filtering mechanism 100 has a simple structure, and can effectively avoid the arrangement of filtering supporting facilities such as a clean water tank, a lift pump and the like, thereby reducing the investment cost, the operation energy consumption and the operation management difficulty and saving the purification treatment cost of sewage.

It should be noted that, in this embodiment, the raw sewage is the sewage to be treated. The concentrated water is obtained by the sewage raw water flowing through the first flow channel along the first direction, only a small part of impurities in the sewage raw water are effectively intercepted by the filter screen 111 of the first filter assembly 110 and the second filter assembly 120 which are close to each other respectively in the process that the sewage raw water flows through the first flow channel along the first direction, and most of the impurities in the sewage raw water are not effectively intercepted by the filter screen 111 of the first filter assembly 110 and the second filter assembly 120 which are close to each other respectively in the process, so that the cleanliness of the obtained concentrated water is relatively low, but the cleanliness of the concentrated water is higher than that of the sewage raw water.

The clean water is the water body obtained after the sewage raw water is filtered by the filter screen 111 of the first filter component 110 and the second filter component 120 close to each other, and most of impurities in the sewage raw water are effectively intercepted by the filter screen 111 of the first filter component 110 and the second filter component 120 close to each other in the process, so that the obtained clean water has the highest cleanliness, namely the cleanliness of the clean water is higher than that of the concentrated water and that of the sewage raw water.

In one embodiment, the impurities in the wastewater may be at least one of suspended matter impurities and particulate impurities. As shown in fig. 2 and 3, in the present embodiment, for convenience of understanding, the first direction is defined as a linear direction of the X axis, and the second direction is defined as a linear direction of the Y axis, so that the raw sewage can obtain the concentrated water when flowing through the first flow channel 112 along the linear direction of the X axis, and the clean water can flow through the second flow channel 121 along the linear direction of the Y axis.

In an embodiment, the filter screen 111 may be, but is not limited to, a metal filter screen, and the number and/or the pore size of the filter holes of the filter screen 111 may be adjusted to meet the filtering requirements of impurities with different sizes in the sewage.

In one embodiment, the first filter assembly 110 and the second filter assembly 120 share the filter mesh 111 adjacent to each other, so that the overall manufacturing material of the filter mechanism 100 can be reduced, and the cost can be reduced.

As shown in fig. 2, in an embodiment, the first filter assembly 110 further includes a first sealing member 113, and the first sealing member 113 is disposed at two ends of the first flow channel 112 in the second direction in a sealing manner, so as to prevent the raw sewage from flowing out of the first flow channel 112 through openings at two ends of the first flow channel 112 in the second direction. Further, the second filter assembly 120 further includes a second sealing member 122, and the second sealing member 122 is disposed at two ends of the second flow channel 121 in the first direction in a sealing manner, so as to prevent the clean water from flowing out of the second flow channel 121 through openings at two ends of the second flow channel 121 in the first direction.

As shown in fig. 1 and fig. 2, in an embodiment, at least one of the first filter assemblies 110 and the second filter assemblies 120 includes a plurality of groups, and the plurality of groups of the first filter assemblies 110 and the at least one group of the second filter assemblies 120 or the at least one group of the first filter assemblies 110 and the plurality of groups of the second filter assemblies 120 are sequentially and alternately disposed adjacent to each other, so that the plurality of first flow channels 112 and the at least one second flow channel 121 or the at least one first flow channel 112 and the plurality of second flow channels 121 are sequentially and alternately disposed adjacent to each other.

Because the plurality of first flow channels 112 and the at least one second flow channel 121 or the at least one first flow channel 112 and the plurality of second flow channels 121 are sequentially arranged alternately and adjacently, the filter screen 111 belonging to the plurality of groups of first filter assemblies 110 and/or the plurality of groups of second filter assemblies 120 can synchronously filter the raw sewage, and the effect of effectively enhancing the impurity removal efficiency of the filter mechanism 100 on the sewage can be achieved.

Specifically, in the present embodiment, each of the first filtering elements 110 and the second filtering elements 120 includes a plurality of sets, and the sets of the first filtering elements 110 and the sets of the second filtering elements 120 are sequentially and alternately disposed and adjacent to each other, so that the plurality of first flow channels 112 and the plurality of second flow channels 121 are sequentially and alternately disposed and adjacent to each other.

As shown in fig. 2 and 3, further, the distance between the first flow channels 112 in the third direction is equal to the distance between the second flow channels 121 in the third direction, and the third direction, the second direction and the first direction are perpendicular to each other. In this embodiment, the third direction is defined as a linear direction of the Z axis, and the distance between the first flow channels 112 in the linear direction of the Z axis is equal to the distance between the second flow channels 121 in the linear direction of the Z axis.

In an embodiment, the two layers of filter screens 111 of the first filter assembly 110 are arranged in parallel, and a distance between the first flow channels 112 in the third direction is also the distance between the two layers of filter screens 111 of the first filter assembly 110 in the third direction, and in an embodiment, the distance between the two layers of filter screens 111 of the first filter assembly 110 in the third direction is 1 to 50 cm; further, the two layers of filter screens 111 of the second filter assembly 120 are arranged in parallel, and the distance between the second flow channels 121 in the third direction is also the distance between the two layers of filter screens 111 of the second filter assembly 120 in the third direction, in an embodiment, the distance between the two layers of filter screens 111 of the second filter assembly 120 in the third direction is 1 to 50 cm.

In one embodiment, the two layers of filter mesh 111 of each group of first filter assemblies 110 are equally spaced in the third direction; further, the two layers of filter mesh 111 of each set of second filter assembly 120 are equally spaced in the third direction, and in one embodiment, the two layers of filter mesh 111 of the first filter assembly 110 are preferably equally spaced in the third direction and the two layers of filter mesh 111 of the second filter assembly 120 are equally spaced in the third direction.

As shown in fig. 2 and 3, it should be noted that, in an embodiment, the raw sewage can flow through the first flow channel 112 in a single direction along the positive direction or the negative direction of the first direction, i.e., the raw sewage can flow along the positive direction or the negative direction of the first direction from one end of the first flow channel 112 to the other end of the second flow channel 121 in the first direction; further, the clean water can flow through the second flow channel 121 along the front and back directions of the second direction at the same time, that is, the clean water can flow out of the second flow channel 121 from the two ends of the second flow channel 121 in the second direction along the front and back directions of the second direction at the same time.

In one embodiment, the pressure difference between the raw sewage and the concentrated water is formed by adjusting the water level difference or the water quantity difference between the raw sewage and the concentrated water.

As shown in fig. 3, in an embodiment, when the pressure difference between the raw sewage and the concentrated water is formed by adjusting the water level difference between the raw sewage and the concentrated water, the raw sewage is injected into the first flow channel 112 from the end of the first flow channel 112 with the higher water level in the first direction, and the concentrated water flows out of the first flow channel 112 from the end of the first flow channel 112 with the lower water level in the first direction, that is, the raw sewage is at the higher water level, and the concentrated water is at the lower water level, so that a certain water level difference is formed between the raw sewage and the concentrated water, and a certain pressure difference is formed between the raw sewage and the concentrated water by the action of gravitational potential energy of the water body, so that the raw sewage generates a power to pass through the filter screen 111 shared by the second flow channel 121 and the first flow channel 112, thereby implementing the filtering treatment of the sewage by.

In an embodiment, when the pressure difference between the raw sewage and the concentrated sewage is realized by adjusting the water volume difference between the raw sewage and the concentrated sewage, a part of the concentrated sewage output from the water outlet end of the first flow channel 112 is fed back to the water inlet end of the first flow channel 112 to supplement the raw sewage, so that the water inlet amount of the raw sewage relative to the first flow channel 112 is always greater than the water outlet amount of the concentrated sewage relative to the first flow channel 112, a certain pressure difference is formed between the raw sewage and the concentrated sewage, and the raw sewage generates power to pass through the filter screen 111 shared by the second flow channel 121 and the first flow channel 112, thereby realizing the filtration treatment of the sewage by the filter screen 111. In an embodiment, part of the concentrated water output from the water outlet end of the first flow channel 112 may be returned to the water inlet end of the first flow channel 112 by a backflow facility, which may be, but is not limited to, a backflow pump, as the water inlet supplement of the raw sewage.

It should be noted that, in an embodiment, when the difference between the water amounts of the raw sewage and the concentrated water is adjusted to form the pressure difference therebetween, the raw sewage may be injected into the first flow channel 112 from the end of the first flow channel 112 with the higher water level in the first direction, and the concentrated water may be flowed out of the first flow channel 112 from the end of the first flow channel 112 with the lower water level in the first direction, that is, the raw sewage is at the higher water level and the concentrated water is at the lower water level; it is understood that, in other embodiments, it is also possible to inject raw sewage into the first flow channel 112 from the end of the first flow channel 112 with the lower water level in the first direction and make concentrated water flow out of the first flow channel 112 from the end of the first flow channel 112 with the higher water level in the first direction, that is, the raw sewage is at the lower water level and the concentrated water is at the higher water level, and the present disclosure is not limited thereto.

As shown in fig. 4, in an embodiment, the filter mechanism 100 further includes a frame 130 for assembling and fixing the first filter assembly 110 and the second filter assembly 120. Further, the frame 130 is a frame structure, and the first filter assembly 110 and the second filter assembly 120 are held in the frame 130, so as to achieve the assembly holding fixation of the first filter assembly 110 and the second filter assembly 120.

In one embodiment, as shown in fig. 4, the filtering mechanism 100 further includes a water bucket 140 for adjusting the amount of clean water, the water bucket 140 is disposed around the top of the first filtering assembly 110 and the second filtering assembly 120, and specifically, the water bucket 140 is connected to the top of the frame 130. In one embodiment, the filter mechanism 100 further includes a water storage chamber 150 for receiving clean water, the water storage chamber 150 is disposed at the bottom of the first filter assembly 110 and the second filter assembly 120, and specifically, the water storage chamber 150 is connected to the bottom of the frame 130.

As shown in fig. 5, in an embodiment, the filter mechanism 100 further includes a main water inlet pipe 160 for injecting raw sewage into the filter mechanism 100. Further, the filter mechanism 100 further includes a main outlet pipe 170 for allowing clean water to flow out of the filter mechanism 100.

Further, the filter mechanism 100 further includes a backwash water inlet pipe 180 for injecting backwash cleaning water into the filter mechanism 100. When a certain amount of impurities are deposited on the filter screen 111 of the filter mechanism 100, the cleaning water output by the backwash water inlet pipe 180 has a backwash effect on the filter mechanism 100, so that the impurities deposited on the filter screen 111 can be discharged in time, the filter mechanism 100 can be effectively cleaned, and the subsequent sewage purification treatment effect of the filter mechanism 100 is ensured.

Further, the filtering mechanism 100 further includes a back washing water outlet pipe 190 for allowing the sewage obtained after the back washing to flow out of the filtering mechanism 100. Further, the filter mechanism 100 further includes a concentrated water outlet pipe 192 for allowing the obtained concentrated water to flow out of the filter mechanism 100. Further, the filtering mechanism 100 further includes an overflow pipe 194 for allowing excess clean water to flow out of the filtering mechanism 100, and specifically, the overflow pipe 194 is disposed on an outer side wall of the water passing bucket 140.

As shown in fig. 5, it should be noted that, in an embodiment, the present invention further provides a filter, which includes the above-mentioned filter mechanism 100 and the water collecting tank 200, and the filter mechanism 100 is accommodated in the water collecting tank 200. Since the filter adopts all technical solutions of the filtering mechanism 100 of all the embodiments, at least all beneficial effects brought by the technical solutions of the filtering mechanism 100 of the embodiments are achieved, and no further description is given here.

As shown in fig. 5, in the present embodiment, the main water inlet pipe 160, the main water outlet pipe 170, the backwash water inlet pipe 180, the backwash water outlet pipe 190 and the concentrate water outlet pipe 192 are all disposed on the outer side wall of the water collecting tank 200. Further, the main water inlet pipe 160 is disposed at the top of the water collecting tank 200, the main water outlet pipe 170 is disposed at the bottom of the water collecting tank 200, the backwash water inlet pipe 180 is disposed at the bottom of the water collecting tank 200, and the backwash water outlet pipe 190 is disposed at the top of the water collecting tank 200.

Specifically, the main water inlet pipe 160, the main water outlet pipe 170, the backwash water inlet pipe 180, and the backwash water outlet pipe 190 are disposed on the same side of the water collecting tank 200, and more specifically, the main water inlet pipe 160 and the backwash water outlet pipe 190 share the same pipe, and the main water outlet pipe 170 and the backwash water inlet pipe 180 share the other pipe. The concentrated water pipe is disposed at the bottom of the water collecting tank 200, and the concentrated water pipe is disposed at one side of the water collecting tank 200 back to the main water inlet pipe 160.

As shown in fig. 4 and 5, in the present embodiment, the main water outlet pipe 170 and the back flush water inlet pipe 180, which are shared by the pipes, pass through one side of the water collecting tank 200 and are connected to the water storage chamber 150, clean water output from the water storage chamber 150 can flow out of the water collecting tank 200 through the main water outlet pipe 170, and clean water output from the back flush water inlet pipe 180 can flow into the first flow passage 112 and the second flow passage 121 through the water storage chamber 150, so as to realize back flush of the filter screen 111 of the filter mechanism 100.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.