A combined judgment intelligent control sewage pre-filter

Abstract

The present invention relates to the technical field of pre-filters, and provides a combined judgment intelligent control sewage pre-filter, comprising a fixed body, a movable body, a filter element body, a water inlet pipe, a first water outlet pipe and a sewage outlet pipe, a first pressure sensor is provided on the water inlet pipe, a second pressure sensor is provided on the first water outlet pipe, the movable body and the fixed body are rotatably and slidably connected, a first water cavity is provided in the fixed body, the filter element body is installed on the top wall of the first water cavity, a second water cavity is provided on the movable body, the filter element body is located in the second water cavity, a connecting component is provided on the inner wall of the second water cavity, a filter bag component is connected to the connecting component, a filter element cleaning component is provided on the inner wall of the first water cavity, and a glass window is provided on the fixed body. The present invention can realize the pollution degree judgment function of the pre-filter in combination through the glass window in combination with the first pressure sensor and the second pressure sensor, and the present invention has a dual filtering function and is easy to clean.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to a combined judgment intelligent control sewage discharge pre-filter. Background Art

[0002] The Chinese authorized utility model patent with publication number CN205115156U discloses a pre-filter of a water purifier, including a filter cover, a filter housing and a pre-filter element; the filter housing is a hollow cylindrical structure, the pre-filter element is placed in the filter housing, and the filter cover is fixedly connected to the filter housing; a circle of circular bosses is provided above the pre-filter element, the diameter of the circular bosses is larger than the radial cross-sectional diameter of the pre-filter element, and a plurality of evenly distributed filter holes are provided on the side wall of the pre-filter element; and a filter bag is also included, the filter bag is sleeved on the outside of the pre-filter element, the bag mouth of the filter bag is sleeved on the circular boss of the pre-filter element, and is fixed by the elastic force of the filter bag itself. The utility model performs coarse filtration through a filter bag made of PP cotton material, the PP cotton has good elasticity, and the filter bag is a detachable structure, which can be cleaned and reused, greatly extending the service life of the pre-filter; the manganese sand in the pre-filter element can effectively remove iron, manganese, arsenic and other harmful substances in water quality in rural areas for a long time.

[0003] However, due to the presence of the filter bag, the above patent cannot scrape away impurities and dirt from the pre-filter element without disassembling it, which makes cleaning very troublesome. Summary of the invention

[0004] In view of the above technical problems, the present invention aims to provide a combined judgment intelligent control sewage pre-filter. To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A combined judgment intelligent control sewage pre-filter comprises a fixed body, a movable body, a filter element body, a water inlet pipe, a first water outlet pipe and a sewage pipe, wherein the water inlet pipe, the first water outlet pipe and the sewage pipe are all fixedly connected to the fixed body;

[0006] A first pressure sensor is provided on the water inlet pipe, a second pressure sensor is provided on the first water outlet pipe, the movable body and the fixed body are rotatably and slidably connected, a first water cavity is provided in the fixed body, the filter element body is installed on the top wall of the first water cavity, a second water cavity is provided on the movable body, the second water cavity is connected with the outer wall of the movable body through more than two water transfer channels, the filter element body is located in the second water cavity, a connecting assembly is provided on the inner wall of the second water cavity, a filter bag assembly is connected to the connecting assembly, a filter element cleaning assembly is provided on the inner wall of the first water cavity, a cover body is movably connected to the bottom wall of the movable body, and a glass window is provided on the fixed body.

[0007] Furthermore, a transmission tooth is fixedly connected to the outer wall of the movable body, and the filter element cleaning assembly includes a cleaning slider and an internal gear. The cleaning slider is slidably connected to the inner wall of the first water chamber, and the cleaning slider and the internal gear are fixedly connected. A scraper cavity is opened on the cleaning slider, and a cleaning scraper is slidably connected to the inner wall of the scraper cavity. The cleaning scraper is connected to the inner wall of the scraper cavity through a first elastic member, and the cleaning scraper extends into the first water chamber. The cleaning scraper and the outer wall of the movable body are abutted against each other, and the bottom wall of the cleaning scraper is provided with a first inclined surface, and the top wall of the movable body is provided with a second inclined surface.

[0008] Further, the connecting assembly includes an automatic wire take-up device, a wire body, a steering wheel and a limit seat, the automatic wire take-up device is fixedly connected to the outer wall of the movable body, the automatic wire take-up device is located outside the fixed body, the movable body is rotatably connected to the steering wheel, the limit seat is slidably connected to the inner wall of the second water cavity, one end of the wire body is movably connected to the automatic wire take-up device, and the other end of the wire body is fixedly connected to the limit seat after passing the steering wheel, a slider channel is opened on the limit seat, the inner wall of the slider channel is slidably connected to a wedge-shaped slider, the wedge slider is fixedly connected to a first permanent magnet block, the inner wall of the slider channel is fixedly connected to a connecting block, and the connecting block is connected to the first permanent magnet block through a second elastic member;

[0009] The filter bag assembly comprises a bag connecting ring and a filter bag body, the filter bag body is connected to the bag connecting ring, the filter bag body is provided with more than four magnetic sheets, the bag connecting ring is sleeved on the filter element body, and the bottom wall of the bag connecting ring and the top wall of the wedge-shaped slider are against each other;

[0010] The inner wall of the second water cavity is inlaid with a permanent magnetic ring, the permanent magnetic ring is magnetically connected to all the magnetic sheets, and the inner wall of the second water cavity is inlaid with a second permanent magnetic block.

[0011] Furthermore, a limiting block is fixedly connected to the inner wall of the second water chamber.

[0012] Furthermore, the bag connecting ring and the filter bag body are fixedly connected.

[0013] Furthermore, the bag connecting ring and the filter bag body are detachably connected.

[0014] Furthermore, the water inlet pipe is provided with a valve, the first water outlet pipe is provided with a valve, and the sewage pipe is provided with a valve.

[0015] Furthermore, a processing module and a buzzer are provided in the fixed body.

[0016] Furthermore, the filter element body is a stainless steel filter element.

[0017] Furthermore, the filter element body is a ceramic filter element.

[0018] Furthermore, the filter element body is a gill-like laminated filter element.

[0019] The present invention has the following beneficial effects:

[0020] The present invention can realize the function of judging the degree of contamination of the pre-filter in combination by using a glass window in conjunction with a first pressure sensor and a second pressure sensor; the present invention has a dual filtering function, is easy to clean, has strong practicality, and has high linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a combined judgment intelligent control sewage discharge pre-filter of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of a combined judgment intelligent control sewage discharge pre-filter of the present invention;

[0024] Figure 3 The present invention Figure 2 A bottom view of the cleaning slide;

[0025] Figure 4 The present invention Figure 2 The enlarged view of point A in the middle;

[0026] Figure 5 The present invention Figure 4 An exploded view of the middle wedge-shaped slider and the first permanent magnet block;

[0027] Figure 6 The present invention Figure 2 Enlarged view of point B in the middle.

[0028] 1. The filter element is provided with a plurality of filter elements, each of which is provided with a plurality of filter elements, and a plurality of filter elements are provided with a plurality of filter elements. The plurality of filter elements are provided with a plurality of filter elements, each of which is provided with a plurality of filter elements. The plurality of filter elements are provided with a plurality of filter elements, each of which is provided with a plurality of filter elements. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-Figure 6As shown, a combined judgment intelligent control sewage pre-filter comprises a fixed body 1, a movable body 2, a filter element body 3, a water inlet pipe 4, a first water outlet pipe 5 and a sewage pipe 6, wherein the water inlet pipe 4, the first water outlet pipe 5 and the sewage pipe 6 are all fixedly connected to the fixed body 1, the water inlet pipe 4 is provided with a first pressure sensor, the first pressure sensor can detect the water pressure of the water inlet pipe 4, the first water outlet pipe 5 is provided with a second pressure sensor, the second pressure sensor can detect the water pressure of the water outlet pipe 5, and the pressure difference is used to judge whether the filter element body 3 and the filter bag assembly need to be cleaned, the movable body 2 and the fixed body 1 are rotatably and slidably connected, a first water cavity 7 is opened in the fixed body 1, the filter element body 3 is installed on the top wall of the first water cavity 7, and the movable body 2 is connected to the fixed body 1. A second water chamber 14 is provided on the body 2, and the second water chamber 14 is connected to the outer wall of the movable body 2 through more than two water transfer channels 13. The filter element body 3 is located in the second water chamber 14, and a connecting component is provided on the inner wall of the second water chamber 14, and a filter bag assembly is connected to the connecting component. The filter bag assembly is used for initial filtering of water and filtering out particulate impurities. A filter element cleaning component is provided on the inner wall of the first water chamber 7, and the filter element cleaning component is used to clean the filter element body 3. A cover body 17 is movably connected to the bottom wall of the movable body 2, and a glass window 32 is provided on the fixed body 1. The user can observe the degree of dirt accumulation of the filter bag assembly through the glass window 32 to determine whether it needs to be cleaned. The glass window 32 cooperates with the first pressure sensor and the second pressure sensor to realize a combined judgment function.

[0033] According to an optional embodiment of the present invention, a transmission tooth 15 is fixedly connected to the outer wall of the movable body 2, and the filter element cleaning assembly includes a cleaning slider 8 and an internal gear 12. The cleaning slider 8 is slidably connected to the inner wall of the first water chamber 7, and the cleaning slider 8 and the internal gear 12 are fixedly connected. A scraper cavity 9 is opened on the cleaning slider 8, and a cleaning scraper 10 is slidably connected to the inner wall of the scraper cavity 9. The cleaning scraper 10 is connected to the inner wall of the scraper cavity 9 through a first elastic member 11, and the cleaning scraper 10 extends into the first water chamber 7. The cleaning scraper 10 and the outer wall of the movable body 2 are abutted against each other, and the bottom wall of the cleaning scraper 10 is provided with a first inclined surface, and the top wall of the movable body 2 is provided with a second inclined surface, and the first inclined surface can be mutually transmitted with the second inclined surface.

[0034] According to an optional embodiment of the present invention, the connecting component includes an automatic wire take-up device 18, a wire body 19, a steering wheel 20 and a limiting seat 21. The automatic wire take-up device 18 is fixedly connected to the outer wall of the movable body 2. The automatic recovery component inside the automatic wire take-up device 18 can be realized using existing technology, such as the internal structure of a tape measure. The automatic wire take-up device 18 is located outside the fixed body 1, and the movable body 2 is rotatably connected to the steering wheel 20, and the steering wheel 20 realizes the wire turning function. The limiting seat 21 is slidably connected to the inner wall of the second water chamber 14, one end of the wire body 19 is movably connected to the automatic wire take-up device 18, and the other end of the wire body 19 is fixedly connected to the limiting seat 21 after bypassing the steering wheel 20. A slider channel 22 is opened on the limiting seat 21, and a wedge-shaped slider 23 is slidably connected to the inner wall of the slider channel 22, and a first permanent magnet block 24 is fixedly connected to the wedge slider 23. A connecting block 26 is fixedly connected to the inner wall of the slider channel 22, and the connecting block 26 is connected to the first permanent magnet block 24 through a second elastic member 25;

[0035] The filter bag assembly includes a bag connecting ring 27 and a filter bag body 28. The filter bag body 28 is connected to the bag connecting ring 27. The filter bag body 28 is provided with more than four magnetic sheets 29. The bag connecting ring 27 is sleeved on the filter element body 3. The bottom wall of the bag connecting ring 27 and the top wall of the wedge-shaped slider 23 are against each other. The wedge-shaped slider 23 limits the bag connecting ring 27 to prevent it from falling, thereby fixing the bag connecting ring 27.

[0036] The inner wall of the second water cavity 14 is inlaid with a permanent magnet ring 16 , which is magnetically connected to all the magnetic sheets 29 . The inner wall of the second water cavity 14 is inlaid with a second permanent magnet block 30 .

[0037] According to an optional embodiment of the present invention, a limiting block 31 is fixedly connected to the inner wall of the second water chamber 14, and the limiting block 31 can prevent the limiting seat 21 from moving downward excessively.

[0038] According to an optional embodiment of the present invention, the bag connecting ring 27 and the filter bag body 28 are fixedly connected, the two are fixed and cannot be disassembled, and the two are replaced together when replaced.

[0039] According to an optional embodiment of the present invention, the bag connecting ring 27 and the filter bag body 28 are detachably connected. When replacing, only the filter bag body 28 needs to be replaced, or the filter bag body 28 needs to be removed for cleaning and then reinstalled on the connecting ring 27.

[0040] According to an optional implementation of the present invention, the water inlet pipe 4 is provided with a valve, the first water outlet pipe 5 is provided with a valve, and the sewage pipe 6 is provided with a valve.

[0041] According to an optional embodiment of the present invention, a processing module and a buzzer are provided in the fixed body 1. The processing module can perform data processing and analysis and control the modules that run and stop running of other components. When the processing module detects that the difference between the pressure value obtained by the first pressure sensor and the pressure value obtained by the second pressure sensor is greater than a preset value, the processing module buzzer can emit a prompt sound to remind the user to clean the filter bag body 28 and the filter element body 3.

[0042] According to an optional embodiment of the present invention, the filter element body 3 is a stainless steel filter element. The stainless steel filter element has excellent corrosion resistance, can be used for a long time under various water conditions, and is not easy to rust. The stainless steel filter element can also withstand higher temperatures and is suitable for hot water systems or applications requiring high temperature disinfection.

[0043] According to an optional embodiment of the present invention, the filter element body 3 is a ceramic filter element, which is usually made of a variety of ceramic materials, such as silicate, alumina, etc. These materials have good chemical stability and high temperature resistance, and the ceramic filter element has a high filtration accuracy and can provide filtration accuracy from micron to nanometer level, effectively removing suspended matter, bacteria, viruses and other harmful chemicals in the water.

[0044] Implementation process: When the pre-filter filters water, the valves on the water inlet pipe 4 and the first water outlet pipe 5 are opened, the valve on the sewage pipe 6 is closed, and the cover body 17 is closed. The raw water flows into the first water cavity 7 through the water inlet pipe 4, passes through the water transmission channel 13, and is filtered by the filter bag body 28 and the filter element body 3 in turn. The filter bag body 28 can filter most of the sand and gravel, large particles of metal, colloids and other larger impurities in the raw water, and the filter element body 3 can filter other smaller harmful substances in the raw water. The output purified water flows out from the first water outlet pipe 5 to the user for use.

[0045] When only the filter element body 3 needs to be cleaned, the valve on the first water outlet pipe 5 is closed, the valve on the drain pipe 6 is opened, and the movable body 2 is moved downward. The limit seat 21 and the inner wall of the second water chamber 14 do not slide relative to each other. The bag connecting ring 27 moves downward along the outer wall of the filter element body 3 under the action of its own gravity, so that the filter bag body 28 releases the wrapping of the filter element body 3. When the movable body 2 moves below the cleaning scraper 10, the cleaning scraper 10 moves toward the filter element body 3 under the elastic force of the first elastic member 11, so that the cleaning scraper 10 and the outer wall of the filter element body 3 are abutted, and the transmission teeth 15 and the inner teeth of the inner wall of the internal gear 12 are engaged. Rotating the movable body 2 can drive the internal gear 12, the cleaning slider 8 and the cleaning scraper 10 to rotate, so that the cleaning scraper 10 scrapes the outer wall of the filter element body 3 to remove debris. Raw water is introduced into the water inlet pipe 4, and the raw water rinses the filter element body 3, and the debris is taken away from the first water chamber 7 through the drain pipe 6. Move the movable body 2 upward, and the second inclined surface of the top wall of the movable body 2 pushes the first inclined surface of the bottom wall of the cleaning scraper 10, so that the cleaning scraper 10 overcomes the elastic force of the first elastic member 11 and returns to the scraper cavity 9. The cleaning scraper 10 is again against the outer wall of the movable body 2 to complete the cleaning of the filter element body 3.

[0046] When it is necessary to clean the filter bag body 28 and the filter element body 3, open the valve on the water inlet pipe 4, close the valve on the first water outlet pipe 5, close the valve on the sewage pipe 6, move the cover 17 to connect the second water chamber 14 with the outside, move the movable body 2 downward, and rotate the movable body 2 after the transmission teeth 15 and the inner teeth on the inner wall of the internal gear 12 are engaged to scrape the debris from the movable body 2. The raw water enters the water inlet pipe 4, and the raw water leaves the second water chamber 14 from the bottom wall of the movable body 2, and the wire body 19 is pulled out of the automatic wire take-up device 18, so that the limit seat 21 is relative to the second water chamber 1 4, when the first permanent magnet block 24 moves to the same level as the second permanent magnet block 30, the second permanent magnet block 30 magnetically attracts the first permanent magnet block 24, so that the wedge-shaped slider 23 overcomes the elastic force of the second elastic member 25 and retracts into the slider channel 22. After the bag connecting ring 27 loses the support of the wedge-shaped slider 23, it falls to the outside of the second water chamber 14, so that the user can easily take out the bag connecting ring 27 and the filter bag body 28, clean or replace the filter bag body 28, and when the bag connecting ring 27 needs to be reinstalled, the wire body 19 is loosened to allow the automatic wire take-up device 18 to align the wire. After the body 19 is recovered for a short period, the wire body 19 continues to be gripped, so that the limit seat 21 moves up a short distance relative to the inner wall of the second water chamber 14. After the first permanent magnet block 24 loses the magnetic attraction of the second permanent magnet block 30, one end of the wedge-shaped slider 23 moves back into the second water chamber 14 under the elastic force of the second elastic member 25, and the bag connecting ring 27 is moved upward, so that the bag connecting ring 27 pushes the wedge-shaped slider 23 to move into the slider channel 22. After the bag connecting ring 27 moves to the top of the wedge-shaped slider 23, the wedge-shaped slider 23 is reset under the elastic force of the second elastic member 25, and the wedge-shaped slider 23 is moved back to the original position. The top wall of block 23 supports the bottom wall of bag connecting ring 27, loosens the wire body 19, and the automatic wire take-up device 18 recycles the wire body 19. The limit seat 21 moves upward relative to the inner wall of the second water chamber 14, thereby driving the bag connecting ring 27 to move upward, and the movable body 2 moves upward. The filter bag body 28 re-wraps the filter element body 3, and the permanent magnet ring 16 magnetically attracts all magnetic sheets 29, so that the filter bag body 28 is stretched open to prevent the filter bag body 28 from clogging the holes of the filter element body 3 and affecting the filtering effect of the filter element body 3. The movable cover body 17 isolates the second water chamber 14 from the outside world.

[0047] The present invention can realize the function of judging the degree of contamination of the pre-filter in combination through the glass window 32 in cooperation with the first pressure sensor and the second pressure sensor; the filter bag body 28 can be released from the wrapped state of the filter element body 3 by moving the movable body 2, and the cleaning scraper 10 can be driven to scrape impurities from the filter element body 3 to prevent the accumulation of impurities in the filter element body 3 from affecting the purification effect; the release and recovery of the isomorphic control line body 19 can realize the disassembly of the bag connecting ring 27 and the filter bag body 28, so that the user can clean or replace the filter bag body 28 to prevent the accumulation of impurities from affecting the purification effect. The present invention has a dual filtering function, is easy to clean, has strong practicality, and has high linkage.

[0048] According to an optional embodiment of the present invention, the filter element body 3 is a gill-like laminated filter element. The gill-like laminated filter element is a relatively new filtering technology that imitates the structure and filtering principle of fish gills to achieve efficient water filtration.

[0049] The components, modules, mechanisms and devices not described in detail in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A combined judgment intelligent control sewage pre-filter, characterized in that: The invention comprises a fixed body (1), a movable body (2), a filter element body (3), a water inlet pipe (4), a first water outlet pipe (5) and a sewage discharge pipe (6), wherein the water inlet pipe (4), the first water outlet pipe (5) and the sewage discharge pipe (6) are all fixedly connected to the fixed body (1), the water inlet pipe (4) is provided with a first pressure sensor, the first water outlet pipe (5) is provided with a second pressure sensor, the movable body (2) and the fixed body (1) are rotatably and slidably connected, a first water cavity (7) is provided in the fixed body (1), and the filter element body (3) is installed A second water chamber (14) is provided on the top wall of the first water chamber (7) and on the movable body (2); the second water chamber (14) is connected to the outer wall of the movable body (2) through more than two water transfer channels (13); the filter element body (3) is located in the second water chamber (14); a connecting assembly is provided on the inner wall of the second water chamber (14); a filter bag assembly is connected to the connecting assembly; a filter element cleaning assembly is provided on the inner wall of the first water chamber (7); a cover body (17) is movably connected to the bottom wall of the movable body (2); and a glass window (32) is provided on the fixed body (1); The outer wall of the movable body (2) is fixedly connected with a transmission tooth (15); the filter element cleaning assembly comprises a cleaning slide (8) and an internal gear (12); the cleaning slide (8) is slidably connected to the inner wall of the first water chamber (7); the cleaning slide (8) and the internal gear (12) are fixedly connected; a scraper chamber (9) is provided on the cleaning slide (8); a cleaning scraper (10) is slidably connected to the inner wall of the scraper chamber (9); the cleaning scraper (10) is connected to the inner wall of the scraper chamber (9) via a first elastic member (11); the cleaning scraper (10) extends into the first water chamber (7); the cleaning scraper (10) and the outer wall of the movable body (2) are in contact with each other; the bottom wall of the cleaning scraper (10) is provided with a first inclined surface; and the top wall of the movable body (2) is provided with a second inclined surface; The connecting assembly comprises an automatic wire take-up device (18), a wire body (19), a steering wheel (20) and a limiting seat (21); the automatic wire take-up device (18) is fixedly connected to the outer wall of the movable body (2); the automatic wire take-up device (18) is located outside the fixed body (1); the movable body (2) is rotatably connected to the steering wheel (20); the limiting seat (21) is slidably connected to the inner wall of the second water chamber (14); one end of the wire body (19) is movably connected to the automatic wire take-up device (1 8), the other end of the wire body (19) passes around the steering wheel (20) and is fixedly connected to the limit seat (21), the limit seat (21) is provided with a slider channel (22), the inner wall of the slider channel (22) is slidably connected to a wedge-shaped slider (23), the wedge-shaped slider (23) is fixedly connected to a first permanent magnet (24), the inner wall of the slider channel (22) is fixedly connected to a connecting block (26), and the connecting block (26) is connected to the first permanent magnet (24) via a second elastic member (25); The filter bag assembly comprises a bag connection ring (27) and a filter bag body (28), the filter bag body (28) being connected to the bag connection ring (27), the filter bag body (28) being provided with more than four magnetic sheets (29), the bag connection ring (27) being sleeved on the filter element body (3), the bottom wall of the bag connection ring (27) and the top wall of the wedge-shaped slider (23) being in contact with each other; The inner wall of the second water chamber (14) is inlaid with a permanent magnetic ring (16), the permanent magnetic ring (16) is magnetically connected to all the magnetic sheets (29), and the inner wall of the second water chamber (14) is inlaid with a second permanent magnetic block (30); The fixed body (1) is provided with a processing module and a buzzer.

2. A combined judgment intelligent control sewage pre-filter according to claim 1, characterized in that: A limiting block (31) is fixedly connected to the inner wall of the second water chamber (14).

3. A combined judgment intelligent control sewage pre-filter according to claim 2, characterized in that: The bag connecting ring (27) and the filter bag body (28) are fixedly connected.

4. The combined judgment intelligent control sewage pre-filter according to claim 2 is characterized in that: The bag connecting ring (27) and the filter bag body (28) are detachably connected.

5. A combined judgment intelligent control sewage pre-filter according to any one of claims 1 to 4, characterized in that: The water inlet pipe (4) is provided with a valve, the first water outlet pipe (5) is provided with a valve, and the sewage discharge pipe (6) is provided with a valve.

6. The combined judgment intelligent control sewage pre-filter according to claim 1 is characterized in that: The filter element body (3) is a stainless steel filter element.

7. The combined judgment intelligent control sewage pre-filter according to claim 1 is characterized in that: The filter element body (3) is a ceramic filter element.

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