A microporous filter operated intermittently

Abstract

The present invention belongs to the field of filtering technology, and discloses an intermittently operated microporous filter, including a processing chamber, wherein a water inlet pipe and a sewage pipe are installed on the outside of the processing chamber, and the water inlet pipe and the sewage pipe are both controlled by a solenoid valve. The present invention discharges water in the processing chamber, and a floating plate moves down with the water level and is sleeved on the outside of the filter cartridge. Clean water is injected into the upper chamber of the processing chamber through the top of the processing chamber, and enters the filter cartridge through the guidance of a first guide cylinder, and the filter cartridge discharge port diameter is reduced through a through hole, thereby increasing the water pressure and improving the effect of flushing the filter cartridge, avoiding the problem of dirt blocking the filter cartridge holes and making it difficult to clean. The water discharged through the through hole is stored in the middle chamber of the processing chamber, and as the water level in the middle chamber of the processing chamber gradually rises, the floating plate drives the guide assembly and the sealing assembly to move up synchronously along the filter cartridge, and the backwashing water is continuously discharged through the through hole during the upward movement, thereby ensuring the effect of backwashing the filter cartridge.

Description

Technical Field

[0001] The invention belongs to the technical field of filtration, in particular to an intermittently operated microporous filter. Background Art

[0002] An intermittently operated microporous filter is a filtering device that uses microporous tubes as filtering media. Its operation mode is intermittent, that is, the filtering process is completed in one batch, followed by auxiliary operations such as cleaning and unloading, and then the next batch of filtering is started; an intermittently operated microporous filter usually includes a body, a screen frame, a screen (or a microporous tube) and other components; when working, the liquid or gas to be filtered enters the body through the feed port, is subjected to the vibration force (or pressure difference), moves in the screen frame and is filtered through the microporous tube. At present, the microporous filter equipment needs to be backwashed and cleaned for long-term liquid filtration to improve the effect of liquid filtration, but the existing microporous filter equipment backwashes the dirt attached to the surface of the filter cartridge by backwashing the clean water through the filter cartridge. Since the filter cartridge is long, it is difficult to effectively wash the dirt blocked in the holes during the backflow of clean water, resulting in the discharge of clean water through the unblocked holes, thereby reducing the effect of filter cartridge flushing. Therefore, an intermittently operated microporous filter is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the present invention provides an intermittently operated microporous filter, which solves the problem that the filter cartridge of the existing microporous filtration equipment is long, and it is difficult to effectively flush the dirt blocked in the holes during the backflow of clean water, resulting in the clean water being discharged through the unblocked holes.

[0004] To achieve the above object, the present invention provides the following technical solution: an intermittently operated microporous filter, comprising a processing chamber, a water inlet pipe and a sewage pipe are installed outside the processing chamber, the water inlet pipe and the sewage pipe are both controlled by electromagnetic valves, and further comprising;

[0005] A filter assembly installed inside the processing chamber;

[0006] A sealing component, wherein the sealing component is sleeved on the lower end of the outside of the filter component;

[0007] A guide assembly, wherein the guide assembly is sleeved on the upper end of the outside of the filter assembly;

[0008] The interior of the processing chamber is divided into three chambers by a first partition and a second partition, the filter assembly is located in the middle chamber of the processing chamber, and the guide assembly and the sealing assembly are movably sleeved on the first partition and the second partition respectively;

[0009] Wherein, the filter assembly comprises a connector fixedly mounted on the bottom of the processing chamber, and a filter cartridge is mounted on the top of the connector via a connecting plate;

[0010] The guide assembly comprises a first guide cylinder movably sleeved on the upper end of the filter cylinder, a through hole is opened at the lower end of the first guide cylinder, a first fixing plate is fixedly mounted on the outside of the first guide cylinder, a second fixing plate is fixedly mounted on the bottom of the first guide cylinder, and the through hole is located between the first fixing plate and the second fixing plate;

[0011] A floating plate is disposed outside the second fixed plate;

[0012] The length of the first guide cylinder is greater than the length of the filter cylinder;

[0013] In the initial state, sewage fills the middle chamber in the treatment bin through the water inlet pipe, the first fixed plate contacts the bottom of the first partition plate under the action of the floating plate, and the filter cartridge filters the sewage;

[0014] The water in the processing bin is discharged through the sewage pipe, and the guide assembly moves down along the filter cartridge and is completely sleeved on the outside of the filter cartridge.

[0015] Preferably, the guide assembly further comprises a connecting rod fixedly mounted on the top of the first guide cylinder, and a hair rod is fixedly mounted on the bottom of the connecting rod;

[0016] The connecting rod and the hair rod are located inside the filter cartridge and are kept level with the through hole.

[0017] Preferably, the guide assembly includes a transmission rod movably mounted on the first fixing plate and the first guide cylinder, a limit block is provided at the bottom of the transmission rod, and the limit block contacts the bottom of the first guide cylinder through a first elastic sheet.

[0018] Preferably, two buckles are hinged on the second fixing plate, and the two buckles are connected by a rubber connector.

[0019] Preferably, the sealing assembly comprises a second guide cylinder movably sleeved on the outside of the filter assembly, the length of the second guide cylinder is greater than the length of the filter cartridge, a connecting ring is fixedly mounted on the top of the second guide cylinder, and the connecting ring is sleeved on the outside of the filter cartridge;

[0020] An annular groove is formed on the outside of the connecting ring;

[0021] The first guide cylinder moves downward to contact the top of the connecting ring, and the backwash water is discharged through the through hole, pushing the rubber connector and the buckle to rotate at the hinge, and the lower end of the buckle is engaged in the annular groove.

[0022] Preferably, the inner wall of the connecting ring is provided with a water inlet groove connected to the annular groove, and the inner wall of the annular groove is movably sleeved with a sealing plate for sealing the water inlet groove, and the top of the sealing plate contacts the top of the annular groove through a second spring sheet to achieve sealing of the water inlet groove.

[0023] Preferably, a circular hole communicating with the annular groove is formed on the top of the connecting ring, and the transmission rod and the circular hole remain coaxial and vertical.

[0024] Preferably, two grooves are formed on the outside of the blocking plate, and a rubber cover is provided on the outside of the annular groove;

[0025] The connecting plate is arranged at the top and the bottom of the filter cartridge;

[0026] The buckle is engaged in the annular groove and contacts the rubber cover. The floating plate drives the sealing assembly upward under the action of the water level in the processing chamber. The transmission rod contacts the bottom of the first partition. The through hole is sleeved on the outside of the connecting plate at the upper end. At the same time, the transmission rod pushes the blocking plate downward. The water in the filter cartridge enters the annular groove through the water inlet groove, causing the rubber cover to expand and push the buckle to rotate in the opposite direction.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention discharges water in the treatment bin, and the float plate moves down with the water level and is sleeved on the outside of the filter cartridge. Clean water is injected into the upper chamber of the treatment bin through the top of the treatment bin and enters the filter cartridge under the guidance of the first guide cylinder. Since the first guide cylinder is sleeved on the outside of the filter cartridge, the backwash water in the filter cartridge is discharged through the through hole, and the discharge port diameter of the filter cartridge is reduced through the through hole, thereby increasing the water pressure and improving the filter cartridge flushing effect, avoiding the problem of dirt clogging the filter cartridge holes and making it difficult to clean. The water discharged through the through hole is stored in the middle chamber of the treatment bin. As the water level in the middle chamber of the treatment bin gradually rises, the float plate drives the guide assembly and the sealing assembly to move up synchronously along the filter cartridge. During the upward movement, the backwash water is continuously discharged through the through hole, thereby ensuring the backwashing effect of the filter cartridge.

[0029] When the filter cartridge is backwashed, the backwashing water enters the filter cartridge and is discharged through the through hole. During this process, the clean hairs on the hair rod surface contact and swing with the surface of the filter cartridge under the action of the water flow, thereby improving the backwashing effect of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0032] Figure 3This is a schematic diagram of the contact structure between the guide component and the filter component of the present invention;

[0033] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0034] Figure 5 This is a schematic diagram of the upward movement structure of the filter assembly and the sealing assembly of the present invention;

[0035] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0036] Figure 7 This is a schematic diagram of the matching structure of the filter assembly, the guide assembly and the sealing assembly of the present invention;

[0037] Figure 8 It is a schematic diagram of the cross-sectional structure of the guide assembly of the present invention from top view;

[0038] Fig. 9 It is a schematic diagram of the cross-sectional structure of the guide assembly of the present invention;

[0039] Fig.10 This is a schematic diagram of the disassembled structure of the sealing assembly of the present invention.

[0040] In the figure: 1. processing chamber; 2. water inlet pipe; 3. sewage pipe; 4. first partition; 5. second partition; 6. filter assembly; 61. filter cartridge; 62. connecting plate; 63. connecting piece; 7. guide assembly; 71. first guide cylinder; 711. buckle; 712. rubber connecting piece; 72. first fixed plate; 722. connecting rod; 723. hair rod; 73. transmission rod; 74. first spring piece; 75. second fixed plate; 76. through hole; 77. floating plate; 8. sealing assembly; 81. second guide cylinder; 82. annular groove; 83. water inlet groove; 84. rubber cover; 85. sealing plate; 86. groove; 87. second spring piece; 88. connecting ring. DETAILED DESCRIPTION

[0041] 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.

[0042] like Figures 1 to 10 As shown, the present invention provides an intermittently operated microporous filter, comprising a processing chamber 1, a water inlet pipe 2 and a sewage pipe 3 are installed outside the processing chamber 1, the water inlet pipe 2 and the sewage pipe 3 are both controlled by electromagnetic valves, and further comprising;

[0043] A filter assembly 6, the filter assembly 6 is installed inside the processing chamber 1;

[0044] A sealing component 8, wherein the sealing component 8 is sleeved on the lower end of the outside of the filter component 6;

[0045] A guide assembly 7, wherein the guide assembly 7 is sleeved on the upper end of the outside of the filter assembly 6;

[0046] The interior of the processing chamber 1 is divided into three chambers by the first partition plate 4 and the second partition plate 5. The filter assembly 6 is located in the middle chamber of the processing chamber 1. The guide assembly 7 and the sealing assembly 8 are movably sleeved on the first partition plate 4 and the second partition plate 5 respectively.

[0047] The filter assembly 6 includes a connector 63 fixed to the bottom of the processing chamber 1, and a filter cartridge 61 is installed on the top of the connector 63 through a connecting plate 62;

[0048] The guide assembly 7 includes a first guide cylinder 71 movably sleeved on the upper end of the filter cylinder 61, a through hole 76 is opened at the lower end of the first guide cylinder 71, a first fixing plate 72 is fixedly mounted on the outside of the first guide cylinder 71, a second fixing plate 75 is fixedly mounted on the bottom of the first guide cylinder 71, and the through hole 76 is located between the first fixing plate 72 and the second fixing plate 75;

[0049] A floating plate 77 is disposed outside the second fixed plate 75;

[0050] The length of the first guide cylinder 71 is greater than the length of the filter cylinder 61;

[0051] In the initial state, sewage fills the middle chamber in the treatment chamber 1 through the water inlet pipe 2, and the first fixed plate 72 contacts the bottom of the first partition plate 4 under the action of the floating plate 77, and the filter cartridge 61 filters and processes the sewage;

[0052] The water in the processing chamber 1 is discharged through the sewage pipe 3 , and the guide assembly 7 moves down along the filter cartridge 61 and is completely sleeved on the outside of the filter cartridge 61 .

[0053] Sewage is injected into and filled in the processing bin 1 through the water inlet pipe 2. The guide assembly 7 is located at the top of the middle chamber of the processing bin 1 under the action of the floating plate 77. By continuously injecting sewage into the processing bin 1, the sewage is filtered by the filter cartridge 61, enters the upper chamber of the processing bin 1 through the top of the first guide cylinder 71, and is discharged from the top of the processing bin 1. When the filter cartridge 61 needs to be cleaned, the water inlet pipe 2 is closed and the sewage pipe 3 is opened, and the water inside the processing bin 1 is discharged through the sewage pipe 3. During this process, the floating plate 77 moves down with the water level until the water in the processing bin 1 is completely discharged. The bottom of the first guide cylinder 71 contacts and is engaged with the sealing assembly 8, and the first guide cylinder 71 is completely sleeved on the outside of the filter cartridge 61.

[0054] Clean water is injected into the upper chamber of the processing chamber 1 through the top of the processing chamber 1, and enters the filter cartridge 61 through the guidance of the first guide cylinder 71. Since the first guide cylinder 71 is sleeved on the outside of the filter cartridge 61, the backwash water in the filter cartridge 61 is discharged through the through hole 76. The discharge port diameter of the filter cartridge 61 is reduced through the through hole 76, thereby increasing the water pressure and improving the flushing effect of the filter cartridge 61, avoiding the problem of dirt clogging the holes of the filter cartridge 61 and making it difficult to clean. The water discharged through the through hole 76 is stored in the middle chamber of the processing chamber 1. As the water level in the middle chamber of the processing chamber 1 gradually rises, the float plate 77 drives the guide assembly 7 and the sealing assembly 8 to move up synchronously along the filter cartridge 61, so that the backwash water can only be discharged through the through hole 76. During the upward movement, the backwash water is continuously discharged through the through hole 76, thereby ensuring the backwashing effect of the filter cartridge 61.

[0055] like Figure 4 , Figure 6 and Fig. 9 As shown, the guide assembly 7 further includes a connecting rod 722 fixedly mounted on the top of the first guide cylinder 71, and a hair rod 723 is fixedly mounted on the bottom of the connecting rod 722;

[0056] The connecting rod 722 and the hair rod 723 are located inside the filter cartridge 61 and are kept level with the through hole 76 .

[0057] When the filter cartridge 61 is backwashed, backwash water enters the filter cartridge 61 and is discharged through the through hole 76. During this process, the clean hairs on the surface of the hair rod 723 swing in contact with the surface of the filter cartridge 61 under the action of the water flow, thereby improving the backwashing effect of the filter cartridge 61.

[0058] At the same time, the outer diameter of the cleaning bristles on the surface of the bristle rod 723 can be designed to be smaller than the inner diameter of the holes on the surface of the filter cartridge 61. The cleaning bristles on the surface of the bristle rod 723 penetrate the holes on the surface of the filter cartridge 61 under the action of water flow, and the effect of cleaning the holes of the filter cartridge 61 is improved by the swing of the cleaning bristles.

[0059] like Figure 4 , Figure 6 , Fig. 9 ,and Fig.10 As shown, the guide assembly 7 includes a transmission rod 73 movably mounted on the first fixing plate 72 and the first guide cylinder 71, a limit block is provided at the bottom of the transmission rod 73, and the limit block contacts the bottom of the first guide cylinder 71 through a first elastic sheet 74;

[0060] Two buckles 711 are hinged on the second fixing plate 75, and the two buckles 711 are connected by a rubber connector 712;

[0061] The sealing assembly 8 includes a second guide cylinder 81 movably sleeved on the outside of the filter assembly 6. The length of the second guide cylinder 81 is greater than the length of the filter cylinder 61. A connecting ring 88 is fixedly mounted on the top of the second guide cylinder 81. The connecting ring 88 is sleeved on the outside of the filter cylinder 61.

[0062] An annular groove 82 is formed on the outside of the connecting ring 88;

[0063] The first guide cylinder 71 moves downward to contact the top of the connecting ring 88 , and the backwash water is discharged through the through hole 76 , pushing the rubber connector 712 and the buckle 711 to rotate at the hinge, and the lower end of the buckle 711 is engaged in the annular groove 82 .

[0064] The water in the processing chamber 1 is discharged through the drain pipe 3, and the guide assembly 7 follows the water level to move down and is completely sleeved on the outside of the filter cartridge 61. At this time, the bottom of the first guide cylinder 71 contacts the top of the connecting ring 88, and backwash water is injected through the top of the processing chamber 1. The water enters the filter cartridge 61 under the guidance of the first guide cylinder 71 and is discharged through the through hole 76. During the discharge process, the flushing water pushes the buckle 711 and the rubber connector 712 to rotate with the second fixed plate 75 as the central axis. The bottom of the buckle 711 is engaged in the annular groove 82. By continuously injecting backwash water into the processing chamber 1, the buckle 711 is always engaged in the annular groove 82, and the guide assembly 7 and the sealing assembly 8 can be connected.

[0065] like Figure 4 , Figure 6 and Figure 7 As shown, the inner wall of the connecting ring 88 is provided with a water inlet groove 83 connected to the annular groove 82, and the inner wall of the annular groove 82 is movably sleeved with a blocking plate 85 for blocking the water inlet groove 83, and the top of the blocking plate 85 contacts the top of the annular groove 82 through a second elastic sheet 87 to block the water inlet groove 83;

[0066] A circular hole communicating with the annular groove 82 is formed on the top of the connecting ring 88, and the transmission rod 73 and the circular hole are kept coaxial and vertical;

[0067] Two grooves 86 are formed on the outside of the blocking plate 85, and a rubber cover 84 is provided on the outside of the annular groove 82;

[0068] The connecting plate 62 is disposed at the top and bottom of the filter cartridge 61;

[0069] The buckle 711 is engaged in the annular groove 82 and contacts the rubber cover 84. The floating plate 77 drives the sealing assembly 8 to move upward under the action of the water level in the processing chamber 1. The transmission rod 73 contacts the bottom of the first partition plate 4. The through hole 76 is sleeved on the outside of the upper end connecting plate 62. At the same time, the transmission rod 73 pushes the sealing plate 85 to move downward. The water in the filter cartridge 61 enters the annular groove 82 through the water inlet groove 83, causing the rubber cover 84 to expand and push the buckle 711 to rotate in the opposite direction.

[0070] The guide assembly 7 moves downward and contacts the top of the sealing assembly 8, and the guide assembly 7 is sleeved on the outside of the filter cartridge 61. The backwash water is discharged through the through hole 76 to push the buckle 711 and the rubber connector 712 to rotate with the second fixed plate 75 as the central axis. The lower end of the buckle 711 is engaged in the annular groove 82. As the water level in the middle chamber of the processing bin 1 gradually rises, the floating plate 77 drives the first guide cylinder 71 and the sealing assembly 8 to move upward synchronously. During the upward movement, the top of the transmission rod 73 contacts the bottom of the first partition 4. At this time, the water in the filter cartridge 61 is continuously discharged through the through hole 76, so that the guide assembly 7 and the sealing assembly 8 continue to move upward. During the upward movement, the transmission rod 73 is blocked by the first partition 4, compressing the first spring sheet 74 through the transmission The limit block at the bottom of the rod 73 passes through the circular hole and pushes the sealing plate 85 to move downward. Since a groove 86 is provided on the outside of the sealing plate 85, the sealing plate 85 is prevented from moving downward to separate the annular groove 82, so that the water inlet groove 83 is in an open state. At this time, the through hole 76 is sleeved on the outside of the upper end connecting plate 62, and the water in the filter cartridge 61 enters the annular groove 82 through the water inlet groove 83, so that the rubber cover 84 expands and pushes the lower end of the buckle 711 to make it detach from the inside of the annular groove 82, so that the guide component 7 and the sealing component 8 can be separated, and the sealing component 8 moves downward under the action of its own gravity to realize the backwashing of the filter cartridge 61, and the sewage can continue to be injected into the treatment bin 1 through the water inlet pipe 2 for filtering through the filter cartridge 61.

[0071] The working principle and use process of the present invention:

[0072] Sewage is injected into and filled in the processing bin 1 through the water inlet pipe 2. The guide assembly 7 is located at the top of the middle chamber of the processing bin 1 under the action of the floating plate 77. By continuously injecting sewage into the processing bin 1, the sewage is filtered by the filter cartridge 61, enters the upper chamber of the processing bin 1 through the top of the first guide cylinder 71, and is discharged from the top of the processing bin 1. When the filter cartridge 61 needs to be cleaned, the water inlet pipe 2 is closed and the sewage pipe 3 is opened, and the water inside the processing bin 1 is discharged through the sewage pipe 3. During this process, the floating plate 77 moves down with the water level until the water in the processing bin 1 is completely discharged. The bottom of the first guide cylinder 71 contacts and is engaged with the sealing assembly 8, and the first guide cylinder 71 is completely sleeved on the outside of the filter cartridge 61.

[0073] Clean water is injected into the upper chamber of the processing chamber 1 through the top of the processing chamber 1, and enters the filter cartridge 61 through the guidance of the first guide cylinder 71. Since the first guide cylinder 71 is sleeved on the outside of the filter cartridge 61, the backwash water in the filter cartridge 61 is discharged through the through hole 76, and the discharge port diameter of the filter cartridge 61 is reduced through the through hole 76, thereby increasing the water pressure and improving the flushing effect of the filter cartridge 61, and avoiding the problem that dirt blocks the holes of the filter cartridge 61 and makes it difficult to clean;

[0074] During the discharge of backwash water through the through hole 76, the buckle 711 and the rubber connector 712 are pushed to rotate with the second fixed plate 75 as the central axis, and the bottom of the buckle 711 is engaged in the annular groove 82. By continuously injecting backwash water into the processing chamber 1, the buckle 711 is always engaged in the annular groove 82, and the guide assembly 7 and the sealing assembly 8 can be connected;

[0075] The water discharged through the through hole 76 is stored in the middle chamber of the processing chamber 1. As the water level in the middle chamber of the processing chamber 1 gradually rises, the floating plate 77 drives the guide assembly 7 and the sealing assembly 8 to move upward synchronously along the filter cartridge 61. During the upward movement, the backwash water is continuously discharged through the through hole 76. During this process, the clean hair on the surface of the hair rod 723 contacts and swings with the surface of the filter cartridge 61 under the action of the water flow, thereby ensuring the backwashing effect of the filter cartridge 61.

[0076] During the upward movement of the guide assembly 7 and the sealing assembly 8, the top of the transmission rod 73 contacts the bottom of the first partition plate 4. At this time, the water in the filter cartridge 61 is continuously discharged through the through hole 76, so that the guide assembly 7 and the sealing assembly 8 continue to move upward. During the upward movement, the transmission rod 73 is blocked by the first partition plate 4, and the compressed first elastic sheet 74 passes through the circular hole through the limit block at the bottom of the transmission rod 73 and pushes the blocking plate 85 to move downward. Since the outer surface of the blocking plate 85 is provided with a groove 86, the blocking plate 85 is prevented from moving downward to separate the annular groove 82, so that the guide assembly 7 and the sealing assembly 8 continue to move upward. The water groove 83 is in an open state. At this time, the through hole 76 is sleeved on the outside of the upper connecting plate 62. The water in the filter cartridge 61 enters the annular groove 82 through the water inlet groove 83, causing the rubber cover 84 to expand and push the lower end of the buckle 711 to separate from the inside of the annular groove 82. The guide component 7 and the sealing component 8 can be separated, and the sealing component 8 moves downward under the action of its own gravity to realize the backwashing of the filter cartridge 61. The sewage can continue to be injected into the treatment bin 1 through the water inlet pipe 2 and filtered through the filter cartridge 61.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intermittently operated microporous filter, comprising a processing chamber (1), wherein a water inlet pipe (2) and a sewage discharge pipe (3) are installed outside the processing chamber (1), wherein both the water inlet pipe (2) and the sewage discharge pipe (3) are controlled by electromagnetic valves, and characterized in that: Also includes; A filter assembly (6), the filter assembly (6) being installed inside the processing chamber (1); A sealing component (8), the sealing component (8) being sleeved on the lower end of the outside of the filter component (6); A guide component (7), the guide component (7) being sleeved on an upper end of the outside of the filter component (6); The interior of the processing chamber (1) is divided into three chambers by a first partition (4) and a second partition (5); the filter assembly (6) is located in the middle chamber of the processing chamber (1); and the guide assembly (7) and the sealing assembly (8) are movably sleeved on the first partition (4) and the second partition (5) respectively; The filter assembly (6) comprises a connecting piece (63) fixedly mounted on the bottom of the processing chamber (1), and a filter cartridge (61) is mounted on the top of the connecting piece (63) via a connecting plate (62); The guide assembly (7) comprises a first guide cylinder (71) movably sleeved on the upper end of the filter cylinder (61); a through hole (76) is provided at the lower end of the first guide cylinder (71); a first fixing plate (72) is fixedly mounted on the outside of the first guide cylinder (71); a second fixing plate (75) is fixedly mounted on the bottom of the first guide cylinder (71); and the through hole (76) is located between the first fixing plate (72) and the second fixing plate (75); A floating plate (77) is provided outside the second fixing plate (75); The length of the first guide cylinder (71) is greater than the length of the filter cylinder (61); In the initial state, sewage fills the middle chamber of the treatment chamber (1) through the water inlet pipe (2), the first fixed plate (72) contacts the bottom of the first partition plate (4) under the action of the floating plate (77), and the filter cartridge (61) filters the sewage; The water in the processing chamber (1) is discharged through the sewage pipe (3), and the guide assembly (7) moves downward along the filter cartridge (61) and is completely sleeved on the outside of the filter cartridge (61); Two buckles (711) are hingedly connected to the second fixing plate (75), and the two buckles (711) are connected via a rubber connecting piece (712); The sealing assembly (8) comprises a second guide cylinder (81) movably sleeved on the outside of the filter assembly (6), the length of the second guide cylinder (81) being greater than the length of the filter cylinder (61), a connecting ring (88) being fixedly mounted on the top of the second guide cylinder (81), and the connecting ring (88) being sleeved on the outside of the filter cylinder (61); An annular groove (82) is formed on the outside of the connecting ring (88); The first guide cylinder (71) moves downward to contact the top of the connecting ring (88), and the backwash water is discharged through the through hole (76), pushing the rubber connecting piece (712) and the buckle (711) to rotate at the hinge, and the lower end of the buckle (711) is engaged in the annular groove (82).

2. The intermittently operated microporous filter according to claim 1, characterized in that: The guide assembly (7) further comprises a connecting rod (722) fixedly mounted on the top of the first guide cylinder (71), and a hair rod (723) is fixedly mounted on the bottom of the connecting rod (722); The connecting rod (722) and the hair rod (723) are located inside the filter cartridge (61) and are kept level with the through hole (76).

3. The intermittently operated microporous filter according to claim 1, characterized in that: The guide assembly (7) comprises a transmission rod (73) movably sleeved on the first fixing plate (72) and the first guide cylinder (71), a limit block being arranged at the bottom of the transmission rod (73), and the limit block being in contact with the bottom of the first guide cylinder (71) via a first elastic sheet (74).

4. The intermittently operated microporous filter according to claim 3, characterized in that: The inner wall of the connecting ring (88) is provided with a water inlet groove (83) in communication with the annular groove (82); the inner wall of the annular groove (82) is movably sleeved with a blocking plate (85) for blocking the water inlet groove (83); the top of the blocking plate (85) contacts the top of the annular groove (82) via a second elastic sheet (87) to seal the water inlet groove (83).

5. The intermittently operated microporous filter according to claim 4, characterized in that: A circular hole communicating with the annular groove (82) is provided at the top of the connecting ring (88), and the transmission rod (73) and the circular hole remain coaxial and vertical.

6. The intermittently operated microporous filter according to claim 5, characterized in that: Two grooves (86) are formed on the outside of the blocking plate (85), and a rubber cover (84) is provided on the outside of the annular groove (82); The connecting plates (62) are arranged on the top and bottom of the filter cartridge (61); The buckle (711) is engaged in the annular groove (82) and contacts the rubber cover (84). The floating plate (77) drives the sealing assembly (8) to move upward under the action of the water level in the processing chamber (1). The transmission rod (73) contacts the bottom of the first partition plate (4). The through hole (76) is sleeved on the outside of the upper connecting plate (62). At the same time, the transmission rod (73) pushes the blocking plate (85) to move downward. The water in the filter cartridge (61) enters the annular groove (82) through the water inlet groove (83), causing the rubber cover (84) to expand and push the buckle (711) to rotate in the opposite direction.

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