Filter

Abstract

The embodiment of the invention discloses a filter, and relates to the technical field of filtering equipment, and the disclosed filter comprises a shell and a filter element; the shell is provided with a liquid inlet and a liquid outlet, the filter element is arranged in an accommodating space of the shell, a first filter cavity, a second filter cavity and a water purification cavity can be formed in the accommodating space by reasonably arranging the filter element and the accommodating space of the shell, the first filter cavity and the second filter cavity are respectively communicated with the liquid inlet, and the water purification cavity is communicated with the liquid outlet. Moreover, the first filtering cavity and the water purifying cavity as well as the second filtering cavity and the water purifying cavity are separated at least through the filter elements, so that liquid flowing into the first filtering cavity and the second filtering cavity from the liquid inlet is filtered into the water purifying cavity through the corresponding filter elements, and the filtering area of the filter elements is increased; therefore, the dirt volume ratio of the filter screen and the water yield of the filter are increased.

Description

Technical Field

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

[0002] The filter is an indispensable device on the pipeline for conveying medium. The filter is usually composed of a shell, a filter screen, etc. The water to be filtered enters the shell through the water inlet of the shell, is filtered by the filter screen inside the shell, and is discharged through the water outlet of the shell.

[0003] In the related art, the filter screen inside the filter housing separates the interior of the housing into a water inlet chamber and a water outlet chamber. The water to be filtered first enters the clean water chamber through the water inlet, flows to the water outlet chamber after being filtered by the filter screen, and is discharged through the water outlet. However, the filtering scheme using the above-mentioned related art is limited by the volume of the housing, and the size of the filter screen used to separate the water inlet chamber and the water outlet chamber is also small, which leads to the problem of a small filtering area of ​​the filter screen, which in turn affects the dirt volume rate of the filter screen and the water output of the filter. Summary of the invention

[0004] The present application discloses a filter to solve the problem of small filtering area in the filter in the related art.

[0005] In order to solve the above technical problems, this application is implemented as follows: The embodiment of the present application discloses a filter, and the disclosed filter includes a housing and a filter element; The housing is provided with a liquid inlet and a liquid outlet, the filter element is arranged in the accommodation space of the housing, and together with the inner wall of the housing, defines a first filter cavity, a second filter cavity and a water purification cavity, the first filter cavity and the water purification cavity, and the second filter cavity and the water purification cavity are separated by at least the filter element, wherein: The first filter chamber and the second filter chamber are respectively connected to the liquid inlet, and the water purification chamber is connected to the liquid outlet, so that the liquid flowing into the first filter chamber and the second filter chamber from the liquid inlet is filtered into the water purification chamber through the filter element and flows out through the liquid outlet.

[0006] Optionally, the shell comprises a shell body and a cover body, wherein the cover body is arranged on an opening at an upper portion of the shell body and together with the shell body, forms the accommodation space; The liquid inlet and the liquid outlet are both arranged on the cover body, and a first fluid channel, a second fluid channel and a third fluid channel are provided on one side of the cover body close to the accommodating space, the first fluid channel is respectively connected to the first filter chamber and the liquid inlet, the second fluid channel is respectively connected to the second filter chamber and the liquid inlet, and the third fluid channel is respectively connected to the water purification chamber and the liquid outlet.

[0007] Optionally, the filter element comprises a first cylindrical filter layer and a second cylindrical filter layer; The inner surface of the first cylindrical filter layer forms the first filter cavity, and one end of the first cylindrical filter layer close to the cover body is provided with a first opening, and is connected with the first fluid channel through the first opening; The second cylindrical filter layer is sleeved outside the first cylindrical filter layer, the inner surface of the second cylindrical filter layer and the outer surface of the first cylindrical filter layer enclose the water purification chamber, the first side of the water purification chamber close to the cover body is an open side, and the second side is a closed side, and the water purification chamber is connected with the third fluid channel through the open side; The outer surface of the second cylindrical filter layer and the inner wall of the shell body form the second filter cavity, and the second filter cavity is communicated with the second fluid channel.

[0008] Optionally, a second opening is provided at one end of the first cylindrical filter layer away from the cover body, and the first filter cavity is connected with the second filter cavity through the second opening.

[0009] Optionally, the cover body comprises a cover body, an annular protrusion and a connecting pipe, and the cover body is arranged to cover the opening at the upper part of the shell body; The annular protrusion is arranged on the surface of the cover body close to the accommodating space, the connecting pipe extends into the area surrounded by the annular protrusion through the through hole on the side of the annular protrusion, and the outer wall of the connecting pipe is sealed and connected to the through hole, the inner surface of the annular protrusion and the outer wall of the connecting pipe form the third fluid channel, the outer surface of the annular protrusion and the inner wall of the cover body form the second fluid channel, and the first fluid channel is arranged in the connecting pipe; One end of the connecting tube is in communication with the end of the first cylindrical filter element provided with the first opening, and the other end of the connecting tube is in communication with the liquid inlet, so that the first filter cavity is in communication with the liquid inlet; The end of the second cylindrical filter layer close to the cover body is connected to the annular protrusion, so that the opening side of the water purification chamber is connected to the liquid outlet through the flow hole on the side of the annular protrusion.

[0010] Optionally, the filter element further includes connecting ribs, which are arranged in the water purification cavity and are respectively connected to the outer surface of the first cylindrical filter layer and the inner surface of the second cylindrical filter layer.

[0011] Optionally, the connecting rib is provided with a uniform flow notch, and the uniform flow notch is used to evenly distribute the filtered liquid in the water purification chamber.

[0012] Optionally, the filter further comprises a sewage discharge device, and a pipeline of the sewage discharge device extends into the accommodating space through a mounting hole at the bottom of the shell.

[0013] Optionally, the filter further comprises a support frame, wherein the support frame is arranged in the accommodating space and is respectively connected to the bottom of the filter element and a pipeline of the sewage discharge device.

[0014] Optionally, the pipeline of the sewage discharge device is provided with a valve body, and the valve body is used to control the opening or closing of the pipeline.

[0015] The technical solution adopted in this application can achieve the following technical effects: The filter disclosed in the embodiment of the present application improves the related technology. The disclosed filter includes a housing and a filter element. The housing is provided with a liquid inlet and a liquid outlet. The filter element is provided in the housing space of the housing. By rationally arranging the filter element and the housing space of the housing, a first filter chamber, a second filter chamber and a water purification chamber can be formed in the housing space. The first filter chamber and the second filter chamber are respectively connected to the liquid inlet, and the water purification chamber is connected to the liquid outlet. Moreover, the first filter chamber and the water purification chamber, and the second filter chamber and the water purification chamber are separated by at least a filter element, so that the liquid flowing into the first filter chamber and the second filter chamber from the liquid inlet is filtered into the water purification chamber through the corresponding filter element, thereby increasing the filtering area of ​​the filter element, and then increasing the dirt volume rate of the filter screen and the water output of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the filter disclosed in the embodiment of the present application; Figure 2 An exploded view of the filter disclosed in the embodiment of the present application; Figure 3 This is one of the structural schematic diagrams of the cover body disclosed in the embodiment of the present application; Figure 4 This is the second structural schematic diagram of the cover body disclosed in the embodiment of the present application; Figure 5 A bottom view of the cover body disclosed in the embodiment of the present application; Figure 6 A top view of the cover body disclosed in the embodiment of the present application; Figure 7 for Figure 6 The cross-sectional view along the AA direction; Figure 8 This is one of the structural schematic diagrams of the filter element disclosed in the embodiment of the present application; Fig. 9 This is the second structural schematic diagram of the filter element disclosed in the embodiment of the present application; Fig.10 A top view of the filter element disclosed in the embodiment of the present application; Fig.11 A bottom view of the filter element disclosed in the embodiment of the present application; Fig.12 It is a front view of the filter element disclosed in the embodiment of the present application; Fig.13 for Fig.12 The cross-sectional view along the BB direction; Fig.14 for Fig.12 Cross-sectional view along CC direction; Fig.15 A side view of the filter disclosed in the embodiment of the present application; Fig.16 for Fig.15 Cross-sectional view along DD direction.

[0017] Description of reference numerals: 110-shell, 111-liquid inlet, 112-liquid outlet, 113-shell body, 114-cover body, 1141-cover body, 1142-annular protrusion, 1143-connecting pipe, 120-filter element, 121-first cylindrical filter layer, 122-second cylindrical filter layer, 123-connecting ribs, 124-uniform flow notch, 130-first filter chamber, 140-second filter chamber, 150-clean water chamber, 160-first fluid channel, 170-second fluid channel, 180-third fluid channel, 190-sewage discharge device, 191-pipeline, 192-valve body, 193-support frame. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0019] The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0020] The technical solutions disclosed in various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0021] Please refer to Figures 1 to 16 As shown, the embodiment of the present application discloses a filter, which can be a pre-filter. The pre-filter is the first coarse filtration device for the water used in the whole house, and can filter large particles such as sand, rust, etc. in the tap water. The pre-filter is generally installed at the front end of the pipeline, so it is named with the word "pre-filter".

[0022] The above-mentioned filter may include a shell 110 and a filter element 120, wherein: the shell 110 is the installation base of the filter, the interior of the shell 110 is provided with a accommodating space, the shell 110 is provided with a liquid inlet 111 and a liquid outlet 112, the liquid inlet 111 and the liquid outlet 112 may be connected to pipes respectively, the water in the pipe enters the interior of the shell 110 through the liquid inlet 111, and is discharged from the liquid outlet 112 after being filtered.

[0023] The filter element 120 is arranged in the accommodation space of the housing 110. The filter element 120 cooperates with the inner wall of the housing 110, and together with the inner wall of the housing 110, defines the first filter chamber 130, the second filter chamber 140 and the water purification chamber 150. The filter element 120 and the inner wall of the housing 110 can be nested and matched with each other to enclose the above-mentioned chamber. The first filter chamber 130 and the water purification chamber 150, and the second filter chamber 140 and the water purification chamber 150 are separated by at least the filter element 120. In order to improve the rationality of the spatial layout, the first filter chamber 130 and the second filter chamber 140 can be respectively located on the opposite sides of the water purification chamber 150, that is, the filter element 120 is arranged on the opposite sides of the water purification chamber 150. In addition, the first filter chamber 130 and the water purification chamber 150, and the second filter chamber 140 and the water purification chamber 150 can also be separated by components inside the housing 110. It should be noted that the components inside the shell 110 are only used as auxiliary components for separation. The first filter chamber 130 and the water purification chamber 150, as well as the second filter chamber 140 and the water purification chamber 150 are mainly separated by the filter element 120, so that the first filter chamber 130 and the water purification chamber 150, as well as the second filter chamber 140 and the water purification chamber 150 have water purification function.

[0024] The first filter chamber 130 and the second filter chamber 140 are respectively connected to the liquid inlet 111, and the water purification chamber 150 is connected to the liquid outlet 112, so that the liquid flowing into the first filter chamber 130 and the second filter chamber 140 from the liquid inlet 111 can be filtered into the water purification chamber 150 through the filter element 120, and then flow out through the liquid outlet 112, forming a complete water purification cycle. The communication method between the first filter chamber 130 and the liquid inlet 111, the second filter chamber 140 and the liquid inlet 111, and the water purification chamber 150 and the liquid outlet 112 can include: first, using the components inside the housing 110 to form a fluid channel, and using the fluid channel to achieve the above-mentioned communication; second, a hose and a joint can be set inside the housing 110, and the above-mentioned communication is achieved by the cooperation of the hose and the joint.

[0025] The filter element 120 can be an integrated filter element or a split filter element. Combined with the above-mentioned chamber separation method, it can be understood that the filter element 120 has two filtering surfaces. The filtering surface refers to the surface where the water flow to be filtered directly contacts the filter element 120. The filtering surface has a pore structure and can filter out impurities. The filtering surface can be a curved surface or a flat surface. One of the two filtering surfaces of the filter element 120 is close to the first filter chamber 130. The other is close to the second filter chamber 140. The water purification chamber 150 can be located in the area surrounded by the two filtering surfaces. The water flow flowing into the first filter chamber 130 and the second filter chamber 140 from the liquid inlet 111 can be filtered by the two filtering surfaces respectively and then converged into the water purification chamber 150, thereby increasing the filtering area of ​​the filter element 120. The increase in the filtering area will also increase the dirt volume rate of the filter screen and the water output of the filter to a certain extent.

[0026] As described above, the filter disclosed in the embodiment of the present application improves the relevant technology. The disclosed filter includes a shell 110 and a filter element 120; the shell 110 is provided with a liquid inlet 111 and a liquid outlet 112, and the filter element 120 is arranged in the accommodating space of the shell 110. By reasonably arranging the filter element 120 and the accommodating space of the shell 110, a first filter chamber 130, a second filter chamber 140 and a water purification chamber 150 can be formed in the accommodating space. The first filter chamber 130 and the second filter chamber 140 are respectively connected to the liquid inlet 111, and the water purification chamber 150 is connected to the liquid outlet 112. In addition, the first filter chamber 130 and the water purification chamber 150, as well as the second filter chamber 140 and the water purification chamber 150 are separated by at least a filter element 120, so that the liquid flowing into the first filter chamber 130 and the second filter chamber 140 from the liquid inlet 111 is filtered into the water purification chamber 150 through the corresponding filter elements 120, thereby increasing the filtration area of ​​the filter element 120, and further increasing the dirt volume rate of the filter screen and the water output of the filter.

[0027] like Figures 2 to 7 As shown, the housing 110 may adopt a split detachable structure, and the housing 110 may include a housing body 113 and a cover body 114. The cover body 114 is disposed on the opening of the upper portion of the housing body 113, and together with the housing body 113, the above-mentioned accommodation space is enclosed. The connection between the housing body 113 and the cover body 114 may include threaded connection, clamping, etc. Figure 2 As shown, an external thread may be provided on the side wall of the shell body 113 and an internal thread may be provided on the inner wall of the cover body 114 so that the shell body 113 and the cover body 114 can be quickly assembled and disassembled by means of a threaded connection.

[0028] The liquid inlet 111 and the liquid outlet 112 are both arranged on the cover body 114. A first fluid channel 160, a second fluid channel 170 and a third fluid channel 180 are provided on one side of the cover body 114 close to the accommodating space. The first fluid channel 160 is respectively connected to the first filter chamber 130 and the liquid inlet 111, the second fluid channel 170 is respectively connected to the second filter chamber 140 and the liquid inlet 111, and the third fluid channel 180 is respectively connected to the water purification chamber 150 and the liquid outlet 112.

[0029] The above-mentioned first fluid channel 160, second fluid channel 170 and third fluid channel 180 can be formed by the structural parts inside the cover body 114, and when the cover body 114 is covered on the shell body 113, the above-mentioned fluid channels formed by the structural parts inside the cover body 114 can cooperate with the filter element 120 and the shell body 113, so that the first filter chamber 130 can be connected with the liquid inlet 111 through the first fluid channel 160, the second filter chamber 140 can be connected with the liquid inlet 111 through the second fluid channel 170, and the clean water chamber 150 can be connected with the liquid outlet 112 through the third fluid channel 180.

[0030] like Figure 2 , Figures 8 to 14 As shown, the filter element 120 can be a sleeve structure, and specifically can include a first cylindrical filter layer 121 and a second cylindrical filter layer 122. The inner surface of the first cylindrical filter layer 121 forms a first filter cavity 130. An end of the first cylindrical filter layer 121 close to the cover body 114 is provided with a first opening. The first filter cavity 130 can be connected to the first fluid channel 160 through the first opening, so that water can flow into the first filter cavity 130 through the liquid inlet 111, the first fluid channel 160 and the first opening.

[0031] The second filter chamber 140 may be surrounded by the outer surface of the second cylindrical filter layer 122 and the inner wall of the shell body 113 . The second filter chamber 140 is connected to the second fluid channel 170 so that water can flow into the second filter chamber 140 through the liquid inlet 111 and the second fluid channel 170 .

[0032] The inner diameter of the second cylindrical filter layer 122 is larger than the outer diameter of the first cylindrical filter layer 121. The second cylindrical filter layer 122 is sleeved outside the first cylindrical filter layer 121. The inner surface of the second cylindrical filter layer 122 and the outer surface of the first cylindrical filter layer 121 form a clean water chamber 150. The first side of the clean water chamber 150 close to the cover body 114 is an open side, and the second side away from the cover body 114 is a closed side. The clean water chamber 150 can be connected to the third fluid channel 180 through the open side. The water in the first filter chamber 130 and the second filter chamber 140 is gathered in the clean water chamber 150 after being filtered. Since the second side of the clean water chamber 150 is a closed side, the water flow in the clean water chamber 150 can only flow to the liquid outlet 112 through the open side and the third fluid channel 180.

[0033] The filter element 120 adopts the nesting method of the first cylindrical filter layer 121 and the second cylindrical filter layer 122, which can increase the filtering area to a greater extent within the limited space of the shell 110, further improving the dirt volume rate of the filter screen and the water output of the filter.

[0034] like Figure 2 , Figures 8 to 14 As shown, for the first filter cavity 130 surrounded by the first cylindrical filter layer 121, the water flowing in from the liquid inlet 111 can flow to the first filter cavity 130 through two paths. Specifically, firstly, the water flows through the liquid inlet 111, the first fluid channel 160, and the first opening of the first cylindrical filter layer 121 to flow into the first filter cavity 130; secondly, a second opening can be provided at the end of the first cylindrical filter layer 121 away from the cover body 114, so that the first filter cavity 130 can also be connected with the second filter cavity 140 through the second opening, and the water flows through the liquid inlet 111 and the second fluid channel 170 to the second filter cavity 140, and then flows into the first filter cavity 130 through the second opening of the first cylindrical filter layer 121.

[0035] The first cylindrical filter layer 121 adopts the above-mentioned double-opening design, so that the water flow flowing into the liquid inlet 111 can be evenly distributed to the first filter cavity 130 and the second filter cavity 140, avoiding the problem of damage to the first filter cavity 130 and the second filter cavity 140 due to uneven water pressure distribution.

[0036] like Figures 1 to 7 As shown, the cover body 114 may include a cover body 1141, an annular protrusion 1142 and a connecting pipe 1143. The cover body 1141 is arranged to cover the opening at the upper part of the shell body 113. The cover body 1141 and the shell body 113 may be assembled by threaded connection, snap connection, etc. The annular protrusion 1142 is arranged on the surface of the cover body 1141 close to the accommodating space. The connecting pipe 1143 extends into the area surrounded by the annular protrusion 1142 through the through hole on the side of the annular protrusion 1142. The annular protrusion 1142, the connecting pipe 1143 and the cover body 1141 may be integrally formed by injection molding, or may be made separately and then assembled together by hot melting, bonding, etc.

[0037] The annular protrusion 1142 needs to be connected to the end of the second cylindrical filter layer 122 close to the cover body 114. A flow hole is provided on the side of the annular protrusion 1142. The flow hole passes through the inner and outer sides of the annular protrusion 1142. The opening side of the water purification chamber 150 is connected to the liquid outlet 112 through the flow hole on the side of the annular protrusion 1142. The connecting pipe 1143 extends into the area surrounded by the annular protrusion 1142 through the through hole on the side of the annular protrusion 1142. The outer wall of the connecting pipe 1143 is sealed and connected to the wall of the through hole. Specifically, the connection can be made by glue sealing or hot melt sealing. Alternatively, the connecting pipe 1143 and the annular protrusion 1142 can also be made by integral molding. The inner surface of the annular protrusion 1142 and the outer wall of the connecting tube 1143 form a third fluid channel 180 , the outer surface of the annular protrusion 1142 and the inner wall of the cover body 1141 form a second fluid channel 170 , and the first fluid channel 160 is provided in the connecting tube 1143 .

[0038] One end of the connecting tube 1143 is connected to the end of the first cylindrical filter layer 121 provided with the first opening, and the other end of the connecting tube 1143 is connected to the liquid inlet 111, so that the first filter chamber 130 is connected to the liquid inlet 111. With the above design, although the first fluid channel 160 and the third fluid channel 180 are both within the area surrounded by the annular protrusion 1142, they are independent of each other and will not interfere with each other. The passage between the second filter chamber 140 and the second fluid channel 170, and the passage between the water purification chamber 150 and the third fluid channel 180 are separated by the annular protrusion 1142 and the second cylindrical filter layer 122, and will not interfere with each other.

[0039] Combination Fig.15 and Fig.16 As shown, the specific filtering process of the filter of this application is described. Fig.16 The direction indicated by the middle arrow is the direction of water flow. The water first flows into the first filter chamber 130 and the second filter chamber 140 through the liquid inlet 111, the first fluid channel 160 and the second fluid channel 170 respectively. The bottom of the first filter chamber 130 and the bottom of the second filter chamber 140 can be connected to each other through the second opening below the first cylindrical filter layer 121 to balance the water pressure of the two filter chambers. The water flow in the first filter chamber 130 can enter the clean water chamber 150 after being filtered by the first cylindrical filter layer 121, and the water flow in the second filter chamber 140 can also enter the clean water chamber 150 after being filtered by the second cylindrical filter layer 122. The water flow gathered by the clean water chamber 150 can flow to the liquid outlet 112 through the upper opening side and the third fluid channel 180. It should be noted that the power required for the water flow to circulate in the filter can come from the pipeline pressure.

[0040] like Figures 8 to 13As shown, the filter element 120 may further include a connecting rib 123, which is disposed in the water purification chamber 150 and is respectively connected to the outer surface of the first cylindrical filter layer 121 and the inner surface of the second cylindrical filter layer 122, thereby improving the assembly stability of the first cylindrical filter layer 121 and the second cylindrical filter layer 122. In specific production, the connecting rib 123 may be an integrated structure with the skeleton of the first cylindrical filter layer 121 and the skeleton of the second cylindrical filter layer 122, or may be produced separately and then assembled together by hot melting, bonding, or the like.

[0041] like Figures 8 to 13 As shown, a flow uniformity notch 124 can be provided on the connecting rib 123, and the flow uniformity notch 124 can make the filtered water flow evenly fill the clean water cavity 150. Moreover, when the filter element 120 is matched with the cover body 114, the flow uniformity notch 124 can also provide a sufficient filtering area between the clean water cavity 150 and the third fluid channel 180 for the water flow to pass through. The specific number of the connecting rib 123 and the flow uniformity notch 124 can be selected according to the size of the first cylindrical filter layer 121 and the second cylindrical filter layer 122. In an optional embodiment of the present application, a plurality of connecting ribs 123 and the flow uniformity notch 124 can be evenly arranged along the circumference of the first cylindrical filter layer 121.

[0042] like Figure 1 to Figure 2 As shown, considering that the filter element 120 will accumulate a lot of debris after long-term use, which will affect the filtering effect, the filter can also include a sewage discharge device 190, and the pipeline 191 of the sewage discharge device 190 extends into the accommodating space through the mounting hole at the bottom of the shell 110, so that the filter element 120 and the inner wall of the shell 110 can be cleaned, and the cleaned debris can be discharged through the pipeline 191 of the sewage discharge device 190.

[0043] like Figure 2 As shown, in order to improve the installation stability between the sewage discharge device 190 and the filter element 120, a support frame 193 can also be set in the accommodating space of the shell 110. The support frame 193 can be connected to the bottom of the filter element 120 and the pipeline 191 of the sewage discharge device 190 respectively to achieve stable cooperation between the filter element 120 and the sewage discharge device 190.

[0044] In addition, if Figure 2 As shown, in order to improve the controllability of the sewage discharge device 190, a valve body 192 can be set on the pipeline 191 of the sewage discharge device 190 to control the opening or closing of the pipeline 191 of the sewage discharge device 190, so as to control the sewage discharge process of the filter in an orderly manner.

[0045] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different technical features between the various embodiments are not contradictory, they can be combined to form more specific embodiments. Considering the simplicity of the text, they will not be repeated here.

[0046] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A filter, It is characterized in that It comprises a housing (110) and a filter element (120); The housing (110) is provided with a liquid inlet (111) and a liquid outlet (112); the filter element (120) is arranged in the accommodating space of the housing (110), and together with the inner wall of the housing (110) defines a first filter chamber (130), a second filter chamber (140) and a water purification chamber (150); the first filter chamber (130) and the water purification chamber (150), and the second filter chamber (140) and the water purification chamber (150) are separated at least by the filter element (120), wherein: The first filter chamber (130) and the second filter chamber (140) are respectively communicated with the liquid inlet (111), and the water purification chamber (150) is communicated with the liquid outlet (112), so that liquid flowing into the first filter chamber (130) and the second filter chamber (140) from the liquid inlet (111) is filtered through the filter element (120) to the water purification chamber (150), and flows out through the liquid outlet (112).

2. The filter according to claim 1, It is characterized in that The shell (110) comprises a shell body (113) and a cover body (114); the cover body (114) is arranged to cover an opening at the top of the shell body (113) and together with the shell body (113) encloses the accommodation space; The liquid inlet (111) and the liquid outlet (112) are both arranged on the cover body (114); a first fluid channel (160), a second fluid channel (170) and a third fluid channel (180) are arranged on a side of the cover body (114) close to the accommodating space; the first fluid channel (160) is respectively connected to the first filter cavity (130) and the liquid inlet (111); the second fluid channel (170) is respectively connected to the second filter cavity (140) and the liquid inlet (111); and the third fluid channel (180) is respectively connected to the water purification cavity (150) and the liquid outlet (112).

3. The filter according to claim 2, It is characterized in that The filter element (120) comprises a first cylindrical filter layer (121) and a second cylindrical filter layer (122); The inner surface of the first cylindrical filter layer (121) forms the first filter cavity (130); one end of the first cylindrical filter layer (121) close to the cover body (114) is provided with a first opening, and is connected to the first fluid channel (160) through the first opening; The second cylindrical filter layer (122) is sleeved outside the first cylindrical filter layer (121); the inner surface of the second cylindrical filter layer (122) and the outer surface of the first cylindrical filter layer (121) enclose the water purification chamber (150); a first side of the water purification chamber (150) close to the cover body (114) is an open side, and a second side is a closed side; the water purification chamber (150) is connected to the third fluid channel (180) through the open side; The outer surface of the second cylindrical filter layer (122) and the inner wall of the shell body (113) form the second filter cavity (140), and the second filter cavity (140) is in communication with the second fluid channel (170).

4. The filter according to claim 3, It is characterized in that A second opening is provided at one end of the first cylindrical filter layer (121) away from the cover body (114), and the first filter cavity (130) is connected to the second filter cavity (140) through the second opening.

5. The filter according to claim 3, It is characterized in that The cover body (114) comprises a cover body (1141), an annular protrusion (1142) and a connecting pipe (1143); the cover body (1141) is arranged to cover the opening at the upper part of the shell body (113); The annular protrusion (1142) is arranged on a surface of the cover body (1141) close to the accommodating space, the connecting tube (1143) extends into the area surrounded by the annular protrusion (1142) through a through hole on the side of the annular protrusion (1142), and the outer wall of the connecting tube (1143) is sealedly connected to the through hole, the inner surface of the annular protrusion (1142) and the outer wall of the connecting tube (1143) form the third fluid channel (180), the outer surface of the annular protrusion (1142) and the inner wall of the cover body (1141) form the second fluid channel (170), and the first fluid channel (160) is arranged in the connecting tube (1143); One end of the connecting tube (1143) is in communication with the end of the first cylindrical filter element (120) provided with the first opening, and the other end of the connecting tube (1143) is in communication with the liquid inlet (111), so that the first filter cavity (130) is in communication with the liquid inlet (111); The end of the second cylindrical filter layer (122) close to the cover body (114) is connected to the annular protrusion (1142), so that the opening side of the water purification chamber (150) is connected to the liquid outlet (112) through the flow hole on the side of the annular protrusion (1142).

6. The filter according to claim 3, It is characterized in that The filter element (120) further comprises a connecting rib (123), wherein the connecting rib (123) is arranged in the water purification chamber (150) and is respectively connected to the outer surface of the first cylindrical filter layer (121) and the inner surface of the second cylindrical filter layer (122).

7. The filter according to claim 5, It is characterized in that The connecting rib (123) is provided with a flow-uniform notch (124), and the flow-uniform notch (124) is used to evenly distribute the liquid from the liquid inlet (111) after filtration in the water purification chamber (150).

8. The filter according to claim 1, It is characterized in that The filter further comprises a sewage discharge device (190), wherein a pipeline (191) of the sewage discharge device (190) extends into the accommodating space through a mounting hole at the bottom of the housing (110).

9. The filter according to claim 8, It is characterized in that The filter further comprises a support frame (193), wherein the support frame (193) is arranged in the accommodating space and is respectively connected to the bottom of the filter element (120) and the pipeline (191) of the sewage discharge device (190).

10. The filter according to claim 8, It is characterized in that The pipeline (191) of the sewage discharge device (190) is provided with a valve body (192), and the valve body (192) is used to control the pipeline (191) to be opened or closed.

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