CN113509781A

CN113509781A - Micro-filter for sewage treatment

Info

Publication number: CN113509781A
Application number: CN202110816055.XA
Authority: CN
Inventors: 郭晓星
Original assignee: Jiangxi Chongrui Environmental Protection Technology Co ltd
Current assignee: Jiangxi Chongrui Environmental Protection Technology Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-10-19

Abstract

The invention relates to the technical field of sewage treatment, and discloses a microfiltration machine for sewage treatment, which comprises a base, two pairs of symmetrical limiting wheels, a baffle, a driving wheel and a water inlet pipe, wherein the base is fixedly connected with the two pairs of symmetrical limiting wheels, the limiting wheels are clamped with outer rollers, the centers of the outer rollers are sleeved with inner rollers, one ends of the inner rollers are fixedly connected with driven wheels, the same end of the inner rollers is fixedly connected with a sewage pipe, a central filter screen is fixedly connected between the two inner rollers, a peripheral filter screen is fixedly connected between the two outer rollers, and the water inlet pipe is fixedly connected with symmetrical outer ring high-pressure pipes and inner ring high-pressure pipes. According to the invention, through the designed impact assembly, the two filter screens can intermittently intersect under the differential reverse rotation, and the impact assembly impacts the filter screens through mutual repulsion of the magnets, so that the filter screens intermittently vibrate, and impurities adhered to the filter screens are loosened and fall off.

Description

Micro-filter for sewage treatment

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a micro-filter for sewage treatment.

Background

The microfiltration machine is a sewage impurity removing device, and the working principle of the microfiltration machine is that sewage is introduced into a rotary drum-type metal filter screen, so that impurities are intercepted by the metal filter screen, filtered water flows out from the bottom of the metal filter screen, the sewage with the impurities gradually moves forwards to the other end of the metal filter screen under the influence of a thread strip in an inner cylinder of the metal filter screen, the sewage is gradually filtered, finally, the impurities are discharged from the other end, and meanwhile, in order to avoid the blockage of the metal filter screen, a high-pressure spray nozzle is generally arranged on the outer side of the metal filter screen, so that the metal filter screen is backwashed by the high-pressure spray nozzle.

However, the existing micro-filter still has some problems in the using process, because the sizes of impurities in the sewage are different, the aperture of the metal filter screen is generally very small, so that the blocking amount of the metal filter screen in unit time is very large, although the high-pressure spray head carries out backwashing, the interval exists in the washing time of the same area of the metal filter screen, the impurities blocked near the filter screen hole are often agglomerated into blocks, the adhesion is enhanced, the backwashing effect is poor, and the filtering efficiency of the sewage is reduced.

Disclosure of Invention

Aiming at the defects of the prior micro-filter in the background technology in the using process, the invention provides the micro-filter for sewage treatment, which has the advantages of secondary sewage filtration, separation of large and small impurities, back washing tangential impact on the impurities, less impurity accumulation on the unit surface of a filter screen in unit time, impact vibration generated during rotation and high pressure water point jet impact, and solves the problems of large impurity blocking amount, poor back washing efficiency and difficult washing of bonded impurities in blocks in the background technology.

The invention provides the following technical scheme: the utility model provides a microstrainer for sewage treatment, includes base, spacing wheel, baffle, action wheel, inlet tube, the spacing wheel of fixedly connected with two pairs of symmetries on the seat, spacing round the joint has outer cylinder, inner drum has been cup jointed at outer cylinder's center, inner drum's one end fixedly connected with from the driving wheel, inner drum's same one end fixedly connected with sewage pipe, two between the inner drum fixedly connected with central filter screen, two between the outer drum fixedly connected with peripheral filter screen, outer lane high-pressure pipe and the inner circle high-pressure pipe of fixedly connected with symmetry on the inlet tube, equal fixedly connected with evenly distributed's high pressure nozzle on outer lane high-pressure pipe and the inner circle high-pressure pipe, equal fixedly connected with eight equipartition striking assemblies on the surface of central filter screen and on the internal surface of peripheral filter screen, the inboard of central filter screen has cup jointed symmetrical insulating ring, the insulating ring of symmetry, The utility model discloses a solid filter screen, including fixed ring I, insulating ring, the solid fixed ring II of symmetry have been cup jointed in the outside of peripheral filter screen, the impact water pipe I of four equipartitions of fixedly connected with on insulating ring, the solid fixed ring I on the filter screen of center, the impact water pipe II of four equipartitions of fixedly connected with on the insulating ring of peripheral filter screen and the solid fixed ring II, the impact high pressure nozzle of equal fixedly connected with equipartition on impact water pipe I and the impact water pipe II.

Preferably, be equipped with screw thread strip I on the inner chamber of center filter screen, set up the filter mesh opening I of equipartition on the center filter screen, be equipped with screw thread strip II on the inner chamber of peripheral filter screen, set up the filter mesh opening II of equipartition on the peripheral filter screen, the diameter value of filter mesh opening I is the twice of filter mesh opening II diameter value, the diameter value of peripheral filter screen is the twice of center filter screen diameter value.

Preferably, the outer ring high-pressure pipe is located in the middle of the outer side of the peripheral filter screen, the inner ring high-pressure pipe is located in the middle of the outer side of the central filter screen, and the high-pressure spray heads are tangent to the rotating directions of the central filter screen and the peripheral filter screen.

Preferably, four the striking assembly is a pair of, the striking assembly includes the quiet end cover of fixed connection on central filter screen surface and peripheral filter screen internal surface, quiet end cover goes up the joint and has moves the end cover, move the inner chamber top fixedly connected with magnet of end cover, the N utmost point of magnet is connected with the top of moving the end cover, the bottom fixedly connected with striking rod and the striking spring of magnet, the striking spring winding is on the striking rod, the centre of a circle of the striking assembly on central filter screen and the peripheral filter screen is the same.

Preferably, the circle centers of the insulating ring and one pair of the impact assemblies are the same, wherein the two pairs of the impact assemblies are fixedly connected with an inner stable block and an outer stable block respectively, and the two pairs of the impact assemblies are fixedly connected with a fixed ring I and a fixed ring II respectively through the inner stable block and the outer stable block.

Preferably, fixedly connected with circuit line in the insulating ring, fixedly connected with switch spring in the insulating ring, switch spring's one end fixedly connected with circuit connects, the circuit connects the joint between the circuit line, circuit connects and is located same straight line with one of them striker.

Preferably, the impact water pipe I and the impact water pipe II have the same internal structure, the inner cavity end of the impact water pipe I is fixedly connected with an electromagnet, a circuit of the electromagnet is communicated with a circuit line, the one end of the electromagnet is fixedly connected with a waterproof layer, symmetrical limiting bulges are arranged at the top of the inner cavity of the impact water pipe I, the limiting bulges and the inner surface of the impact water pipe I form a groove, a plugging plate is clamped in the groove, uniformly distributed drain holes are formed in the plugging plate, one end of the plugging plate, which is close to the electromagnet, is fixedly connected with a metal plate, the other end of the plugging plate is fixedly connected with a sliding plate, one end of the sliding plate is fixedly connected with a pulling spring, one end of the impact water pipe I, which is close to the sliding plate, is provided with a water inlet, and one side of the water inlet, which is close to the sliding plate, is provided with a water-stop plate.

Preferably, the inner ring of the outer drum is provided with teeth, and the driving wheel is meshed with the teeth and the driven wheel on the outer drum.

The invention has the following beneficial effects:

1. according to the invention, through the designed impact assembly, the two filter screens can intermittently intersect under the differential reverse rotation, and the impact assembly impacts the filter screens through mutual repulsion of the magnets, so that the filter screens intermittently vibrate, and impurities adhered to the filter screens are loosened and fall off.

2. According to the invention, through the designed impact water pipe I, the switch spring, the circuit connector and the circuit wire, when the impact assembly intermittently impacts the filter screens, the circuit of the electromagnet can be synchronously disconnected, so that the impact water pipe I is opened and high-pressure water is sprayed in a short time, the high-pressure water impacts on the two filter screens, vibration sources are generated on the inner side and the outer side of the central filter screen and the peripheral filter screens, the vibration frequencies of the central filter screen and the peripheral filter screens are converged and impacted, and impurities with strong adhesion are loosened and fall off.

3. The invention enables the central filter screen to independently filter larger impurities through the designed central filter screen and the peripheral filter screen, and sewage with smaller impurities is secondarily filtered through the peripheral filter screen, thereby avoiding the accumulation of the impurities on the unit area of the filter screens in unit time, and enabling the two filter screens to be subjected to the back washing action of tangential water flow in the rotation process through the design that the high-pressure spray head tangentially sprays the sewage to the filter screens.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a driving wheel structure according to the present invention;

FIG. 3 is a schematic view of a retaining ring I of the present invention;

FIG. 4 is an enlarged view of a portion of the structure A of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the impact assembly of the present invention;

FIG. 6 is a schematic view of the construction of the plugging plate of the present invention;

FIG. 7 is a schematic view of the structure of an impact water pipe I according to the present invention.

In the figure: 1. a base; 2. a limiting wheel; 3. an outer drum; 4. a baffle plate; 5. a driving wheel; 6. a driven wheel; 7. a sewage pipe; 8. an inner drum; 9. a central filter screen; 901. a thread strip I; 902. a filter mesh I; 10. a peripheral filter screen; 101. a thread strip II; 102. a filter screen hole II; 11. an impact assembly; 111. a stationary end cap; 112. a movable end cover; 12. a magnet; 13. a striker bar; 14. a strike spring; 15. an inner stabilization block; 151. an outer stabilization block; 16. a fixing ring I; 161. a fixing ring II; 17. an insulating ring; 18. a circuit line; 19. a switch spring; 20. a circuit connector; 21. an impact water pipe I; 211. a water inlet; 212. a water-stop sheet; 22. impacting the high-pressure spray head; 23. an electromagnet; 24. a waterproof layer; 25. a limiting bulge; 26. a metal plate; 27. a blocking plate; 28. a drain hole; 29. a sliding plate; 30. pulling the spring; 31. a water inlet pipe; 32. an outer ring high-pressure pipe; 33. an inner ring high-pressure pipe; 34. a high pressure spray head; 35. impact the water pipe II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, a microfiltration machine for sewage treatment comprises a base 1, two pairs of symmetrical limiting wheels 2 fixedly connected to the base 1, an outer drum 3 clamped to the limiting wheels 2 to prevent the outer drum 3 from being restricted by the limiting wheels 2 during rotation and from being separated from a track, an inner drum 8 sleeved at the center of the outer drum 3, a driven wheel 6 fixedly connected to one end of the inner drum 8, a sewage pipe 7 fixedly connected to the same end of the inner drum 8, teeth arranged on the inner ring of the outer drum 3, and a driving wheel 5 engaged with the teeth and the driven wheel 6 on the outer drum 3 to drive the outer drum 3 and the inner drum 8 to synchronously rotate in a differential manner, so that the outer drum 3 and the inner drum 8 rotate in opposite directions.

A central filter screen 9 is fixedly connected between the two inner rollers 8, a thread strip I901 is arranged in the inner cavity of the central filter screen 9, the central filter screen 9 can drive sewage to move forward to the other end through the thread strip I901 in the rotating process, a uniformly distributed filter screen hole I902 is formed in the central filter screen 9, a peripheral filter screen 10 is fixedly connected between the two outer rollers 3, a thread strip II101 is arranged in the inner cavity of the peripheral filter screen 10, a uniformly distributed filter screen hole II102 is formed in the peripheral filter screen 10, the diameter value of the filter screen hole I902 is twice of the diameter value of the filter screen hole II102, so that the central filter screen 9 filters large impurities in the sewage, the peripheral filter screen 10 filters small impurities in the sewage, the amount of the impurities accumulated in the unit area of the filter screen is reduced in unit time, the condition that the backwashing effect is poor due to the accumulation of excessive impurities is avoided, the diameter value of the peripheral filter screen 10 is twice of the diameter value of the central filter screen 9, and the peripheral filter screen 10 and the central filter screen 9 are rotated in a differential speed, causing the peripheral screen 10 to intermittently interact with the impingement assembly 11 on the central screen 9.

Outer lane high-pressure pipe 32 and the inner circle high-pressure pipe 33 of fixedly connected with symmetry on inlet tube 31, equal fixedly connected with equipartition's high pressure nozzle 34 on outer lane high-pressure pipe 32 and the inner circle high-pressure pipe 33, outer lane high-pressure pipe 32 is located the outside middle part of peripheral filter screen 10, inner circle high-pressure pipe 33 is located the outside middle part of central filter screen 9, high pressure nozzle 34 all is tangent with the direction of rotation of central filter screen 9 and peripheral filter screen 10, make high pressure nozzle 34 tangential injection high pressure water to the filter screen, make the high pressure water strike impurity edge, thereby make impurity peel off.

Eight collision assemblies 11 which are uniformly distributed are fixedly connected on the outer surface of the central filter screen 9 and the inner surface of the peripheral filter screen 10, four collision assemblies 11 are in a pair, each collision assembly 11 comprises a static end cover 111 which is fixedly connected on the outer surface of the central filter screen 9 and the inner surface of the peripheral filter screen 10, a movable end cover 112 is clamped on the static end cover 111, a magnet 12 is fixedly connected at the top end of an inner cavity of the movable end cover 112, the N pole of the magnet 12 is connected with the top end of the movable end cover 112, a collision rod 13 and a collision spring 14 are fixedly connected at the bottom end of the magnet 12, the collision spring 14 is wound on the collision rod 13, the circle centers of the collision assemblies 11 on the central filter screen 9 and the peripheral filter screen 10 are the same, so that the magnet 12 can generate mutual exclusion effect when the collision assemblies 11 on the peripheral filter screen 10 and the central filter screen 9 are interacted, thereby pressing down the striker 13 to cause the striker 13 to strike the peripheral screen 10 and the central screen 9, causing them to vibrate.

The inner side of the central filter screen 9 is sleeved with a symmetrical insulating ring 17 and a symmetrical fixing ring I16, the outer side of the peripheral filter screen 10 is sleeved with a symmetrical insulating ring 17 and a symmetrical fixing ring II161, the insulating ring 17 has the same circle center as one pair of the impact assemblies 11, wherein the two pairs of the impact assemblies 11 are respectively and fixedly connected with an inner stabilizing block 15 and an outer stabilizing block 151, the two pairs of the impact assemblies 11 are respectively and fixedly connected with a fixing ring I16 and a fixing ring II161 through the inner stabilizing block 15 and the outer stabilizing block 151, the fixing ring I16 and the fixing ring II161 are fixed in position to avoid falling off in continuous rotation, the insulating ring 17 is internally and fixedly connected with a circuit wire 18, the insulating ring 17 is internally and fixedly connected with a switch spring 19, one end of the switch spring 19 is fixedly connected with a circuit connector 20, the circuit connector 20 is clamped between the circuit wires 18, the circuit connector 20 and one of the impact rods 13 are positioned on the same straight line, so that when the impact rods 13 impact the filter screen, the striker 13 can press against the circuit contact 20 to move the circuit contact 20 away from the circuit line 18 to de-energize the circuit of the circuit line 18 and de-energize the electromagnet 23, weakening the magnetic force.

An insulating ring 17 on a central filter screen 9 and a fixing ring I16 are fixedly connected with four evenly distributed impact water pipes I21, the insulating ring 17 and the fixing ring II161 of a peripheral filter screen 10 are fixedly connected with four evenly distributed impact water pipes II35, the impact water pipes I21 and II35 are both fixedly connected with evenly distributed impact high-pressure spray heads 22, the internal structures of the impact water pipes I21 and II35 are the same, one end of an inner cavity of the impact water pipe I21 is fixedly connected with an electromagnet 23, a circuit of the electromagnet 23 is communicated with a circuit wire 18, so that the magnetic force of the electromagnet 23 and the circuit on-off of the circuit wire 18 can be synchronously changed, one end of the electromagnet 23 is fixedly connected with a waterproof layer 24, the damage of short circuit of the electromagnet 23 caused by water flow is avoided, symmetrical limiting bulges 25 are arranged at the top of the inner cavity of the impact water pipe I21, grooves are formed by the two limiting bulges 25 and the inner surface of the impact water pipe I21, and a blocking plate 27 is clamped in the grooves, the blocking plate 27 can be limited by the position in the sliding process, the problem that the blocking plate is failed to block and open due to the fact that the blocking plate 27 slides away from the original position is avoided, the blocking plate 27 is provided with the uniformly distributed drain holes 28, one end, close to the electromagnet 23, of the blocking plate 27 is fixedly connected with the metal plate 26, the metal plate 26 with the largest area of the electromagnet 23 is made to adsorb, the situation that the blocking plate 27 with the smaller adsorption cross section area fails is avoided, the other end of the blocking plate 27 is fixedly connected with the sliding plate 29, one end of the sliding plate 29 is fixedly connected with the pulling spring 30, when the electromagnet 23 fails, the pulling spring 30 can pull the blocking plate 27 to open the impact high-pressure nozzle 22, the impact high-pressure nozzle 22 can conduct point-jet high-pressure water impact on two filter screens, the impact force of the impact high-pressure nozzle 22 is intersected with the impact force of the impact rod 13, the vibration frequency is changed, impurities which are hard to adhere to fall off, one end of the impact water pipe I21 is close to the sliding plate 29 and is provided with the water inlet 211, a water stop plate 212 is installed at one side of the water inlet 211 close to the sliding plate 29, so that the water stop plate 212 blocks one end of the impact water pipe I21 close to the sliding plate 29, and the water flow is prevented from affecting the movement of the sliding plate 29.

The use method (working principle) of the invention is as follows:

firstly, turning on a motor to enable a driving wheel 5 to rotate, enabling an outer roller 3 and an inner roller 8 to do differential reverse rotation movement under the driving of the driving wheel 5, leading sewage into a rotating central filter screen 9 through a sewage pipe 7, simultaneously leading high-pressure water into a water inlet pipe 31, enabling a high-pressure nozzle 34 to spray high-pressure water onto the rotating central filter screen 9 and a peripheral filter screen 10, then leading the sewage to gradually move to the other side under the influence of a thread strip I901 in the central filter screen 9, leading larger impurities to be adhered to the central filter screen through primary filtration of the central filter screen 9, leading the sewage which is subjected to primary filtration to gradually move to the other side under the influence of a thread strip II101 through a filter screen hole I902, and leading the sewage which is subjected to secondary filtration to interception by the peripheral filter screen 10 to flow out from the bottom of the peripheral filter screen 10;

then, in the process of rotating the central filter screen 9 and the peripheral filter screen 10, the impact assemblies 11 on the central filter screen 9 and the impact assemblies 11 on the peripheral filter screen 10 are intermittently interacted, so that the two magnets 12 in the interaction process generate mutual repulsion reaction, thereby enabling the end cover 112 to drive the impact rods 13 to impact the central filter screen 9 and the peripheral filter screen 10, simultaneously enabling the two impact rods 13 to respectively impact the circuit connectors 20 on the central filter screen 9 and the peripheral filter screen 10, disconnecting the circuit of the circuit wire 18, enabling the electromagnet 23 to lose electric power and weaken the magnetism thereof, further enabling the pulling spring 30 to pull the blocking plate 27 away from the electromagnet 23, enabling the drain hole 28 to coincide with the impact high-pressure spray head 22, further enabling the high-pressure water to be jetted to the central filter screen 9 and the peripheral filter screen 10, enabling the inner side and the outer side of the central filter screen 9 and the peripheral filter screen 10 to generate vibration sources, and then, the two interactive impact assemblies 11 are separated, the impact spring 14 drives the movable end cover 112 to return, the switch spring 19 drives the circuit connector 20 to return, the circuit line 18 is switched on, the electromagnet 23 adsorbs the metal plate again, and the blocking plate 27 blocks the impact high-pressure spray head 22 again;

finally, it is sufficient to wait for the crash assembly 11 to interact again.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a microstrainer for sewage treatment, includes base (1), spacing wheel (2), baffle (4), action wheel (5), inlet tube (31), its characterized in that: the automatic cleaning device is characterized in that two pairs of symmetrical limiting wheels (2) are fixedly connected to the base (1), outer rollers (3) are connected to the limiting wheels (2) in a clamping manner, inner rollers (8) are sleeved at the centers of the outer rollers (3), one ends of the inner rollers (8) are fixedly connected with driven wheels (6), one ends of the inner rollers (8) are fixedly connected with sewage pipes (7), a central filter screen (9) is fixedly connected between the two inner rollers (8), a peripheral filter screen (10) is fixedly connected between the two outer rollers (3), symmetrical outer ring high-pressure pipes (32) and inner ring high-pressure pipes (33) are fixedly connected to the water inlet pipe (31), uniformly distributed high-pressure nozzles (34) are fixedly connected to the outer ring high-pressure pipes (32) and the inner ring high-pressure pipes (33), and eight uniformly distributed impact assemblies (11) are fixedly connected to the outer surface of the central filter screen (9) and the inner surface of the peripheral filter screen (10), the inboard of center filter screen (9) has cup jointed the insulator ring (17), the solid fixed ring I (16) of symmetry, the insulator ring (17), the solid fixed ring II (161) of symmetry have been cup jointed in the outside of peripheral filter screen (10), the impact water pipe I (21) of four equipartitions of fixedly connected with is gone up on insulator ring (17), the solid fixed ring I (16) on the center filter screen (9), the impact water pipe II (35) of four equipartitions of fixedly connected with is gone up in insulator ring (17) of peripheral filter screen (10) and solid fixed ring II (161), impact water pipe I (21) and impact water pipe II (35) on the impact high pressure nozzle (22) of equal fixedly connected with equipartition.

2. A micro-filter for sewage treatment according to claim 1, characterized in that: be equipped with screw thread strip I (901) on the inner chamber of center filter screen (9), set up the filter mesh opening I (902) of equipartition on center filter screen (9), be equipped with screw thread strip II (101) on the inner chamber of peripheral filter screen (10), set up the filter mesh opening II (102) of equipartition on peripheral filter screen (10), the diameter value of filter mesh opening I (902) is the twice of filter mesh opening II (102) diameter value, the diameter value of peripheral filter screen (10) is the twice of center filter screen (9) diameter value.

3. A micro-filter for sewage treatment according to claim 1, characterized in that: outer lane high-pressure pipe (32) are located the outside middle part of peripheral filter screen (10), inner circle high-pressure pipe (33) are located the outside middle part of central filter screen (9), high pressure nozzle (34) all are tangent with the direction of rotation of central filter screen (9) and peripheral filter screen (10).

4. A micro-filter for sewage treatment according to claim 1, characterized in that: four striking assembly (11) are a pair of, striking assembly (11) include quiet end cover (111) of fixed connection on central filter screen (9) surface and peripheral filter screen (10) internal surface, quiet end cover (111) are gone up the joint and are had movable end cover (112), move inner chamber top fixedly connected with magnet (12) of end cover (112), the N of magnet (12) utmost point is connected with the top of moving end cover (112), the bottom fixedly connected with striking rod (13) and striking spring (14) of magnet (12), striking spring (14) winding is on striking rod (13), the centre of a circle of striking assembly (11) on central filter screen (9) and peripheral filter screen (10) is the same.

5. A micro-filter for sewage treatment according to claim 1, characterized in that: the circle centers of the insulating ring (17) and one pair of the impact assemblies (11) are the same, wherein the two pairs of the impact assemblies (11) are respectively and fixedly connected with an inner stable block (15) and an outer stable block (151), and the two pairs of the impact assemblies (11) are respectively and fixedly connected with a fixed ring I (16) and a fixed ring II (161) through the inner stable block (15) and the outer stable block (151).

6. A micro-filter for sewage treatment according to claim 1, characterized in that: fixedly connected with circuit line (18) in insulating ring (17), fixedly connected with switch spring (19) in insulating ring (17), the one end fixedly connected with circuit connector (20) of switch spring (19), circuit connector (20) joint is between circuit line (18), circuit connector (20) are located same straight line with one of them striker rod (13).

7. A micro-filter for sewage treatment according to claim 1, characterized in that: the inner structure of the impact water pipe I (21) is the same as that of the impact water pipe II (35), one end of an inner cavity of the impact water pipe I (21) is fixedly connected with an electromagnet (23), a circuit of the electromagnet (23) is communicated with a circuit line (18), one end of the electromagnet (23) is fixedly connected with a waterproof layer (24), the top of the inner cavity of the impact water pipe I (21) is provided with symmetrical limiting bulges (25), the two limiting bulges (25) and the inner surface of the impact water pipe I (21) form a groove, a plugging plate (27) is clamped in the groove, the plugging plate (27) is provided with uniformly distributed drain holes (28), one end of the plugging plate (27) close to the electromagnet (23) is fixedly connected with a metal plate (26), the other end of the plugging plate (27) is fixedly connected with a sliding plate (29), one end of the sliding plate (29) is fixedly connected with a pulling spring (30), a water inlet (211) is formed in one end, close to the sliding plate (29), of the impact water pipe I (21), and a water stop plate (212) is installed on one side, close to the sliding plate (29), of the water inlet (211).

8. A micro-filter for sewage treatment according to claim 1, characterized in that: the inner ring of the outer roller (3) is provided with teeth, and the driving wheel (5) is meshed with the teeth on the outer roller (3) and the driven wheel (6).