A double filter capable of quickly replacing filter components

Abstract

The present application relates to a double filter with a quickly replaceable filter assembly, comprising: a bracket, a rotor, and a filter cartridge, wherein the bracket and the rotor are symmetrically arranged in two groups, the rotor shaft is inserted into the rotor shaft hole, the rotor wheel disc is embedded in the arc-shaped groove frame of the bracket, the filter cartridge is inserted into the rotor socket and the first quick connector sub-body and the second quick connector sub-body are respectively opposite to a quick connector mother body; the two groups of second connecting frames are connected and communicated with the quick connector mother body through a three-way pipe; the two groups of first connecting frames are connected and communicated with the quick connector mother body through a three-way pipe.

Description

Technical Field

[0001] The present application relates to the technical field of filter equipment, and in particular to a duplex filter with a quickly replaceable filter assembly. Background Art

[0002] In the application of water pipelines, filters are indispensable equipment for media filtration. Most existing filters use the method of stopping the machine to replace the filter element to clean the filter to ensure its filtering effect. This replacement method requires the pipeline equipment to be shut down, which has a great impact on the pipeline system and production. In response to this, a filter that can be switched in pairs has been derived. For example, the application with application number 201210448210.8 and application name is a double-switch filter. The filter includes a single-cylinder filter, and the single-cylinder filter includes a water inlet and a water outlet. The double-switch filter is composed of two single-cylinder filters, the water inlet between the two single-cylinder filters is connected by a pipe, and the water outlet between the two single-cylinder filters is connected by a pipe. A three-way valve is provided on the connecting pipe of the water inlet between the two single-cylinder filters; a three-way valve is provided on the connecting pipe of the water outlet between the two single-cylinder filters. The present invention adopts an associated combination structure of two single-cylinder filters and connects them with a three-way valve. In this way, when the filter needs to be cleaned, the three-way valve is turned to disconnect the water inlet and water outlet of the single-cylinder filter to be cleaned, so that the single-cylinder filter can be cleaned alone, while the other single-cylinder filter can be used normally, thus ensuring that the industrial pipeline is in a continuous working state.

[0003] Although the filter in the above-mentioned prior art solves the problem that the single-tube filter needs to be shut down for removal and replacement of the filter, which affects the pipeline system and production, the filter still has the following problems:

[0004] 1. The equipment is connected by a valve body. When the pipeline is switched, the other filter needs to be manually removed for cleaning. If the other filter also has an abnormality at this time, it is impossible to quickly install the pipeline.

[0005] 2. The filter is replaced manually, and there are only two filter cartridges. For some piping systems that require quick replacement of the filter mesh, the filter mesh cannot be replaced quickly. Summary of the Invention

[0006] In order to solve or partially solve the problems existing in the related art, the present application provides a double filter with a quickly replaceable filter assembly, which can quickly replace the filter assembly while also having other filters available for emergency use.

[0007] The present application discloses a duplex filter with a quickly replaceable filter assembly, comprising:

[0008] The bracket comprises a base and an arc-shaped slot frame arranged on the base, a rotating wheel frame, a first connecting frame, a driving frame, and a second connecting frame; the rotating wheel frame and the driving frame are fixedly arranged on both sides of the arc-shaped slot frame, and the first connecting frame and the second connecting frame are connected on both sides of the arc-shaped slot frame, a rotating wheel shaft is provided between the rotating wheel frame and the driving frame, one end of the rotating wheel shaft is connected to the groove wheel, a driving dial is provided on the driving frame, and a driving dial is fixed on the driving dial for driving the groove wheel to rotate, a first fastening telescope and a second fastening telescope are provided on the first connecting frame and the second connecting frame respectively, a quick joint mother body is provided on the first connecting frame and the second connecting frame respectively, the telescopic ends of the two fastening telescopes are provided with a connecting rod, and one end of the connecting rod is transferred to one side of the first quick joint mother body; a first top extension telescope is provided on one side of the rotating wheel frame, and a second top extension telescope is provided on one side of the second connecting frame; and

[0009] The runner includes a triangular column and a wheel disc, the wheel disc is fixedly arranged in the middle of the triangular column; the center of the triangular column is configured with a shaft hole, and at least three sockets are configured around the shaft hole; and

[0010] The filter cartridge is provided in a cylindrical shape, one end of the filter cartridge is connected to a first quick connector sub-body via a connecting tube; the other end of the filter cartridge is connected to a second quick connector sub-body, the first quick connector sub-body and the second quick connector sub-body facing the same side; and

[0011] pipeline;

[0012] Among them, two groups of brackets and rotors are symmetrically arranged, the rotor shaft is inserted into the shaft hole, the wheel disc is embedded in the arc-shaped groove frame, the filter cartridge is inserted into the socket and the first quick connector sub-body and the second quick connector sub-body are respectively facing a quick connector mother body; the two groups of second connecting frames are connected and connected to the quick connector mother body through a three-way pipe; the two groups of first connecting frames are connected and connected to the quick connector mother body through a three-way pipe.

[0013] Optionally, the rotor frame is configured to be hook-shaped and only occupies the area of ​​an end surface of the filter cartridge.

[0014] Optionally, an arc-shaped positioning groove is constructed in the insertion hole, and a circular positioning rod is constructed on the filter cartridge, and the positioning rod is slidably arranged in the positioning groove.

[0015] Optionally, limiting grooves are constructed on the three cylindrical surfaces of the triangular column, a limiting telescopic frame is fixedly provided on the upper section of one side of the arc-shaped slot frame, a limiting telescopic device is provided on the limiting telescopic frame, and the limiting telescopic device is clamped in the limiting groove when extended.

[0016] Optionally, the filter cartridge includes a lower shell, an upper shell, a buckle, and a filter element;

[0017] Among them, a water inlet is provided at one end of the lower shell, and the first quick connector sub-body is provided on the water inlet; a water outlet is provided at one end of the upper shell, and the connecting pipe is connected to the water outlet. A filter element is provided on the upper shell, and the filter element is inserted into the lower shell. The lower shell and the upper shell are abutted and sealed by a snap fastener, and the positioning rod is fixedly provided on the lower shell.

[0018] Optionally, the length of the lower shell is four to five times that of the upper shell.

[0019] Optionally, the quick connector sub-body and the quick connector main body form a quick connector, and the quick connector is a rotary quick connector.

[0020] Optionally, the pipeline includes an inlet pipe, an outlet pipe, a solenoid valve and a pressure sensor, and the inlet pipe and the outlet pipe are configured as a three-way pipe, wherein the solenoid valve is provided on the pipe body connected to the filter cartridge, and the pressure sensor is provided on the other pipe body.

[0021] Optionally, the driving dial is constructed with an arc-shaped notch, the driving lever is located at the center of the notch, the groove wheel is set to be an equilateral triangle shape, the groove wheel is constructed with a slide groove, and the driving lever is constructed with a circular shaft and slides into the slide groove of the groove wheel.

[0022] Optionally, all the moving parts adopt electronic control parts and are connected to a controller of the cylinder.

[0023] The technical solution provided by this application may have one of the following beneficial effects:

[0024] This device uses two sets of double filters, and at least three filter cartridges are arranged on each set of filters. The relevant telescoping devices and quick connectors on the rotating wheel and the bracket are used to realize electric or pneumatic non-manual quick replacement. If any filter cartridge has an abnormality, it can be quickly replaced without stopping the machine. On the other hand, there are three independent filter cartridges in a set of filters in this application, and the mesh size can be quickly replaced according to different filtration mesh size requirements.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0027] Figure 1 It is a front view of an embodiment of the present application;

[0028] Figure 2 is a top view of an embodiment of the present application;

[0029] Figure 3 This is shown in the embodiment of the present application Figure 2 Middle AA section view;

[0030] Figure 4 It is a structural diagram shown in an embodiment of the present application;

[0031] Figure 5 Schematic diagram of the support structure shown in the embodiment of the present application;

[0032] Figure 6 is a top view of the bracket shown in the embodiment of the present application;

[0033] Figure 7 Schematic diagram of the connection structure between the rotor and the filter cartridge shown in the embodiment of the present application;

[0034] Figure 8 This is a front view of the connection between the rotor and the filter cartridge shown in an embodiment of the present application;

[0035] Figure 9 Schematic diagram of the rotor structure shown in an embodiment of the present application;

[0036] Figure 10 is a front view of a rotating wheel shown in an embodiment of the present application;

[0037] Figure 11 This is a schematic diagram of the filter cartridge structure shown in an embodiment of the present application;

[0038] Figure 12 is a front cross-sectional view of a filter cartridge shown in an embodiment of the present application;

[0039] Figure 13 is a top view of the filter cartridge shown in an embodiment of the present application;

[0040] Reference numerals:

[0041] 1. Bracket;

[0042] 11. Arc-shaped slot frame; 12. Position-limiting telescopic frame; 13. Position-limiting telescopic device; 14. Rotating wheel frame; 15. First connecting frame; 16. Driving frame; 17. Second connecting frame; 18. First tightening telescopic device; 19. Driving dial; 191. Driving lever; 110. First extending telescopic device; 111. Second tightening telescopic device; 112. Connecting rod; 113. Quick connector body; 114. Base; 115. Rotating wheel shaft; 1151. Sheave; 116. Second extending telescopic device;

[0043] 2. Rotating wheel; 21. Triangular column; 22. Wheel; 23. Socket; 24. Positioning slot; 25. Limiting slot; 26. Rotating shaft hole;

[0044] 3. Filter cartridge; 31. Lower housing; 32. Upper housing; 33. Buckle; 34. Connecting pipe; 35. First quick connector sub-body; 36. Second quick connector sub-body; 37. Positioning rod; 38. Filter element;

[0045] 4. Pipeline; 41. Water inlet pipe; 42. Water outlet pipe; 43. Solenoid valve; 44. Pressure sensor. DETAILED DESCRIPTION

[0046] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0047] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0049] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0050] In response to the above problems, an embodiment of the present application provides a double filter with a quickly replaceable filter assembly. The technical solution of the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0051] like Figures 1 to 13 The double filter with quick-change filter assembly shown in the figure includes four major connecting mechanisms: bracket 1, rotor 2, filter cartridge 3 and pipe 4, wherein bracket 1 is a frame for supporting the movement of the entire device. Specifically, in this application, bracket 1 is as follows Figure 5 and Figure 6 As shown, the bracket 1 includes a base 114 and an arcuate trough frame 11, a rotating wheel frame 14, a first connecting frame 15, a driving frame 16, and a second connecting frame 17 arranged on the base; the arcuate trough frame 11 is a semicircular trough body, and the rotating wheel frame 14 and the driving frame 16 are fixedly arranged on both axial sides of the arcuate trough frame 11. The first connecting frame 15 and the second connecting frame 17 are connected on both axial sides of the arcuate trough frame 11, and the first connecting frame 15 and the second connecting frame 17 are respectively located on one side of the rotating wheel frame 14 and the driving frame 16. A wheel shaft 115 is provided between the rotating wheel frame 14 and the driving frame 16, one end of the rotating wheel shaft 115 is connected to a groove wheel 1151, a driving dial 19 is provided on the driving frame 16, and a driving lever 191 for rotating the driving groove wheel 1151 is fixed on the driving dial 19, and a first tightening retractor 18 and a second tightening retractor 111 are provided on the first connecting frame 15 and the second connecting frame 17 respectively, and a quick joint mother body 113 is provided on the first connecting frame 15 and the second connecting frame 17 respectively, and the telescopic ends of the two tightening retractors are provided with a connecting rod 112, and one end of the connecting rod 112 is transferred to one side of the first quick joint mother body 113; a first top extension retractor 110 is provided on one side of the rotating wheel frame 14, and a second top extension retractor is provided on one side of the second connecting frame 17.

[0052] In this application, the runner 2 is as follows Figure 9 and Figure 10 As shown, it includes a triangular column 21 and a wheel disc 22 , wherein the wheel disc 22 is fixedly arranged in the middle of the triangular column 21 ; a rotating shaft hole 26 is constructed in the center of the triangular column 21 , and at least three insertion holes 23 are constructed around the rotating shaft hole 26 .

[0053] The filter cartridge 3 of this application is as follows Figure 10 、 Figure 11 and Figure 12 As shown; the filter cartridge 3 is set to a cylindrical shape to facilitate plug-in replacement, and one end of the filter cartridge 3 is connected to a first quick connector sub-body 35 through a connecting tube 34; the other end of the filter cartridge 3 is connected to a second quick connector sub-body 36, and the first quick connector sub-body 35 and the second quick connector sub-body 36 face the same side.

[0054] In the application, two symmetrical groups of brackets 1 and rotors 2 are arranged and connected via a pipe 4 to form a duplex filter. Unlike existing duplex filters, in this application, the rotor shaft 115 is inserted into the shaft hole 26, the wheel 22 is embedded in the arc-shaped slot frame 11, and the filter cartridge 3 is inserted into the socket 23 so that the first quick connector sub-body 35 and the second quick connector sub-body 36 are respectively facing a quick connector mother body 113; the two groups of second connecting frames 17 are connected and connected to the quick connector mother body 113 via a three-way pipe 4; and the two groups of first connecting frames 15 are connected and connected to the quick connector mother body 113 via a three-way pipe 4. All the operating devices in this application are uniformly connected to a controller for automatic control.

[0055] Thus, in the present application, the wheel 2 as a whole is connected to the arc-shaped slot frame 11 through the wheel shaft 115 and is limited by the wheel plate 22 and the arc-shaped slot frame 11 to prevent the wheel 2 from sliding in the axial direction. The entire wheel 2 is driven by a motor to drive the drive dial 19 to rotate (the motor can be directly embedded in the drive frame 16, or the drive dial 19 can be driven by other transmission components or mechanisms). During the rotation process, every time the drive dial 19 rotates one circle, the drive lever 191 on the drive dial 19 moves the slot wheel 1151 once to rotate 120 degrees to replace a filter cartridge 3. During the entire replacement process, the filter cartridge 3 is inserted into the socket 23 of the rotor 2 and changes its position as the rotor 2 rotates. When a filter cartridge 3 rotates with the rotor 2 and stops, the first quick connector sub-body 35 and the second quick connector sub-body 36 of the filter cartridge 3 are facing the quick connector mother body 113 on the first connecting frame 15 and the second connecting frame 17. The first extending telescopic device 110 extends to push the filter cartridge 3 out for a distance and make the first quick connector sub-body 35 and the second quick connector sub-body 36 abut against the quick connector mother body 113. The first fastening telescopic device 18 and the second fastening telescopic device 111 extend. The first and second fastening retractors 18 and 111 are retracted to drive the quick connector mother body 113 to rotate and lock the sub-connector to seal, thus completing the connection of the filter cartridge 3 to the pipeline; when the filter cartridge 3 needs to be replaced, the first fastening retractor 18 and the second fastening retractor 111 are retracted to drive the quick connector mother body 113 to rotate and unlock the sub-connector, the first extending retractor 110 is retracted, and the second extending retractor 116 is pushed out to push the filter cartridge 3 back so that the quick connector is separated from the pipeline system, and then the dial 19 is driven to rotate to replace another filter, and the above-mentioned locking and disengagement are carried out to complete the replacement. During the replacement process, the dual system can realize quick replacement without stopping the machine.

[0056] In this application, two sets of filters are connected in a double configuration, with at least three filter cartridges in each set. Retractors and quick connectors on the rotating wheel and bracket enable quick, non-manual replacement of any filter cartridges, either electrically or pneumatically. If any filter cartridge experiences an abnormality, it can be quickly replaced without stopping the machine. Furthermore, a set of filters in this application includes three independent filter cartridges, allowing for quick mesh changes based on varying filter mesh requirements.

[0057] In one embodiment, since changes in water pressure can affect changes in filtration accuracy, in order to ensure both accuracy and hydraulic performance, different mesh sizes can be set in advance and appropriate filter cartridges can be selected based on the water pressure.

[0058] In one embodiment, the filter cartridge 3 needs to be pulled out and replaced with a new one after rotation so as not to affect the replacement of the filter. Therefore, in order to facilitate the extraction and insertion of the filter cartridge 3, as shown in FIG. Figure 5 As shown, the rotor frame 14 is configured in a hook shape and only occupies the area of ​​an end surface of the filter cartridge 3 .

[0059] In one embodiment, in order to prevent the filter cartridge 3 from rotating axially during insertion, as shown in FIG. Figure 7 、 Figure 9 and Figure 11 As shown, an arc-shaped positioning slot 24 is constructed in the insertion hole 23 , and a circular positioning rod 37 is constructed on the filter cartridge 3 , and the positioning rod 37 is slidably disposed in the positioning slot 24 .

[0060] In one embodiment, Figure 4 、 Figure 9 and Figure 10 As shown, in order to limit the rotation of the wheel 2, a limiting groove 25 is constructed on the three cylindrical surfaces of the triangular column 21, and a limiting telescopic frame 12 is fixedly provided on the upper section of one side of the arc-shaped slot frame 11. A limiting telescopic device 13 is provided on the limiting telescopic frame 12, and the limiting telescopic device 13 is clamped in the limiting groove 25 when extended.

[0061] In one embodiment, Figure 10 、 Figure 11 and Figure 12 As shown, the present application provides a filter cartridge 3 that is convenient for plugging, replacing and cleaning, including a lower shell 31, an upper shell 32, a buckle 33, and a filter element 38;

[0062] One end of the lower housing 31 is provided with a water inlet, and a first quick connector sub-body 35 is provided on the water inlet; one end of the upper housing 32 is provided with a water outlet, and a connecting pipe 34 is connected to the water outlet. The upper housing 32 is provided with a filter element 38, which is inserted into the lower housing 31. The lower housing 31 and the upper housing 32 are abutted and sealed by a buckle 33. The positioning rod 37 is fixed to the lower housing 31, and the length of the lower housing 31 is four to five times that of the upper housing 32. In this way, the filter cartridge 3 is convenient for quick insertion and replacement on the impeller 2, and is also convenient for disassembly and cleaning after removal.

[0063] In one embodiment, in order to facilitate the connection and fastening of the quick connector, the quick connector sub-body and the quick connector main body constitute a quick connector, and the quick connector is a rotary quick connector.

[0064] In one embodiment, the pipeline 4 includes an inlet pipe 41, an outlet pipe 42, a solenoid valve 43 and a pressure sensor 44. The inlet pipe 41 and the outlet pipe 42 are configured as a three-way pipe, wherein the solenoid valve 43 is provided on the pipe body connected to the filter cartridge 3, and the pressure sensor 44 is provided on the other pipe body.

[0065] In one embodiment, the rotation angle of the wheel 2 can be positioned conveniently from the driving point, such as Figure 1 As shown, the driving dial 19 is constructed with an arc-shaped notch, the driving lever 191 is located at the center of the notch, the groove wheel 1151 is set to an equilateral triangle shape, the groove wheel 1151 is constructed with a slide groove, and the driving lever 191 is constructed with a circular shaft and slides in the slide groove of the groove wheel 1151. Every time the driving dial 19 rotates one circle, the driving lever 191 on the driving dial 19 moves the groove wheel 1151 once and rotates 120 degrees to replace a filter cartridge 3.

[0066] In one embodiment, in order to facilitate automatic control, all the moving parts use electronic control parts and are connected to a controller of the cartridge. The moving parts include various telescoping devices, solenoid valves and drive motors. In this way, when the pressure sensor 44 detects that the pressure is abnormal or reaches the replacement set value, the filter cartridge can be automatically and quickly replaced.

[0067] Finally, it should be noted that, in this document, relationships such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms include, comprise, or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0069] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A double filter with a quick-replaceable filter assembly, characterized in that: include: The bracket (1) comprises a base (114) and an arc-shaped slot frame (11), a rotating wheel frame (14), a first connecting frame (15), a driving frame (16), and a second connecting frame (17) arranged on the base; the rotating wheel frame (14) and the driving frame (16) are fixedly arranged on both sides of the arc-shaped slot frame (11); the first connecting frame (15) and the second connecting frame (17) are connected to both sides of the arc-shaped slot frame (11); a rotating wheel shaft (115) is connected between the rotating wheel frame (14) and the driving frame (16); one end of the rotating wheel shaft (115) is connected to a groove wheel (1151); a driving dial (19) is connected to the driving frame (16); a driving lever (191) for rotating the driving groove wheel (1151) is fixedly arranged on the driving dial (19); and an arc-shaped The notch is formed in the center of the notch, the driving lever (191) is arranged in an equilateral triangle shape, the notch (1151) is provided with a sliding groove, the driving lever (191) is provided with a circular shaft and is slidably connected in the sliding groove of the notch (1151); the first connecting frame (15) and the second connecting frame (17) are provided with a first tightening telescope (18) and a second tightening telescope (111), respectively; the first connecting frame (15) and the second connecting frame (17) are provided with a quick connector mother body (113), the telescopic ends of the two tightening telescopes are provided with a connecting rod (112), and one end of the connecting rod (112) is provided on one side of the quick connector mother body (113); the first top extension telescope (110) is provided on one side of the rotating wheel frame (14), and the second top extension telescope is provided on one side of the second connecting frame (17); and A rotating wheel (2); the rotating wheel (2) comprises a triangular column (21) and a wheel disc (22), wherein the wheel disc (22) is fixedly arranged in the middle of the triangular column (21); a rotating shaft hole (26) is constructed in the center of the triangular column (21), and at least three insertion holes (23) are constructed around the rotating shaft hole (26); and A filter cartridge (3); the filter cartridge (3) is configured to be cylindrical, one end of the filter cartridge (3) being connected to a first quick connector sub-body (35) via a connecting pipe (34); the other end of the filter cartridge (3) being connected to a second quick connector sub-body (36), the first quick connector sub-body (35) and the second quick connector sub-body (36) facing the same side; and Pipeline (4); The bracket (1) and the rotating wheel (2) are symmetrically arranged in two groups, the rotating wheel shaft (115) is inserted into the rotating shaft hole (26), the wheel disc (22) is embedded in the arc-shaped slot frame (11), the filter cartridge (3) is inserted into the insertion hole (23) and makes the first quick connector sub-body (35) and the second quick connector sub-body (36) face one of the quick connector mother bodies (113) respectively; the two groups of second connecting frames (17) are connected and communicated with the quick connector mother body (113) through a three-way pipe (4); the two groups of first connecting frames (15) are connected and communicated with the quick connector mother body (113) through a three-way pipe (4); the rotating wheel frame (14) is set to be hook-shaped and occupies only the area of ​​the end face of one filter cartridge (3); an arc-shaped positioning groove (24) is constructed in the insertion hole (23), and a plate-shaped circular positioning rod (37) is constructed on the filter cartridge (3).

2. A duplex filter with a quickly replaceable filter assembly according to claim 1, characterized in that: The positioning rod (37) is slidably arranged in the positioning slot (24).

3. The double filter with a quick-change filter assembly according to claim 1, characterized in that: Limiting grooves (25) are constructed on the three cylindrical surfaces of the triangular column (21); a limiting telescopic frame (12) is fixedly provided on the upper section of one side of the arc-shaped slot frame (11); a limiting telescopic device (13) is provided on the limiting telescopic frame (12); and the limiting telescopic device (13) is engaged in the limiting groove (25) when extended.

4. The duplex filter with a quick-change filter assembly according to claim 1, characterized in that: The filter cartridge (3) comprises a lower shell (31), an upper shell (32), a buckle (33), and a filter element (38); One end of the lower shell (31) is provided with a water inlet, and the first quick connector sub-body (35) is provided on the water inlet; one end of the upper shell (32) is provided with a water outlet, and the connecting pipe (34) is connected to the water outlet. The filter element (38) is provided on the upper shell (32), and the filter element (38) is inserted into the lower shell (31). The lower shell (31) and the upper shell (32) are in contact or are fastened and sealed by a buckle (33), and the positioning rod (37) is fixedly provided on the lower shell (31).

5. The duplex filter with a quick-change filter assembly according to claim 4, characterized in that: The length of the lower shell (31) is four to five times that of the upper shell (32).

6. The duplex filter with a quick-change filter assembly according to claim 1, characterized in that: The quick connector sub-body and the quick connector main body form a quick connector, which is a rotary quick connector.

7. The duplex filter with a quick-change filter assembly according to claim 1, characterized in that: The pipeline (4) comprises a water inlet pipe (41), a water outlet pipe (42), a solenoid valve (43) and a pressure sensor (44); the water inlet pipe (41) and the water outlet pipe (42) are configured as a three-way pipe.

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