阅读说明：本技术 一种污水处理用的初级过滤装置 (Primary filtering device for sewage treatment ) 是由 刘相民 于 2021-01-06 设计创作，主要内容包括：本发明公开了一种污水处理用的初级过滤装置,包括过滤箱、调节结构、分隔板、滤网架、清理结构和盖覆板,所述过滤箱中字型箱状结构,所述过滤箱的两端均一体成型设置有连通筒,突出环与传动杆之间螺纹配合；所述分隔板对应进水口的一端铰接安装有阻挡板,所述阻挡板的铰接端穿过过滤箱伸出,且伸出端设置有带动阻挡板转动的调节结构,所述分隔板对应出水口处铰接安装有盖覆板,所述盖覆板的外侧边与容纳腔的腔壁之间铰接安装有辅助压紧的压紧结构。该污水处理用的初级过滤装置,设计合理,能在工作过程中对滤网进行清理,能避免人工进行清理,同时在清理时避免通过多个电机进行转动清理,降低了装置整体成本,适合推广使用。(The invention discloses a primary filtering device for sewage treatment, which comprises a filtering box, an adjusting structure, a partition plate, a filtering net rack, a cleaning structure and a covering plate, wherein the filtering box is of a box-shaped structure, two ends of the filtering box are integrally provided with a communicating cylinder, and a protruding ring is in threaded fit with a transmission rod; the utility model discloses a baffle plate, including division board, baffle plate, water inlet, baffle plate, water outlet, division board, baffle plate, rose box, baffle plate, division board, baffle plate, division board, baffle plate. This elementary filter equipment that sewage treatment used, reasonable in design can clear up the filter screen in the course of the work, can avoid the manual work to clear up, avoids rotating the clearance through a plurality of motors when clearing up simultaneously, has reduced device overall cost, is fit for using widely.)

1. The utility model provides a primary filter equipment that sewage treatment used, includes rose box (1), adjusts structure (4), division board (8), screen frame (9), clearance structure (11) and cover board (22), its characterized in that: the filter box (1) is of a box-shaped structure in a Chinese character 'Zhongzi' shape, two ends of the filter box (1) are integrally provided with a communicating cylinder, the outer side edge of the communicating cylinder is embedded with an installation ring, and the installation ring is provided with a fixing hole for fixing a bolt;

the inside chamber that holds that is provided with of rose box (1), two filter chambers are cut apart through division board (8) of I shape to the intracavity portion, filter box (1) top corresponds filter chamber department and inlays to establish and installs observation window (2), the both ends of division board (8) are the slope of V type and set up, the both ends symmetry of division board (8) is fixed with water inlet and delivery port, and equal perpendicular grafting of well department of two filter chambers installs screen frame (9), install the filter screen on screen frame (9), the clearance structure (11) of supplementary clearance are installed to one side that the screen corresponds the water inlet on screen frame (9), install drive motor (10) that drive screen frame (9) removed in the filter chamber, transfer line (101) are installed to the spindle front end of drive motor (10), the outside limit well department of screen frame (9) is fixed with outstanding ring, the protruding ring is in threaded fit with the transmission rod (101);

baffle (3) are installed to the one end that division board (8) correspond the water inlet is articulated, the hinged end of baffle (3) passes rose box (1) and stretches out, and stretches out the end and be provided with and drive baffle (3) pivoted regulation structure (4), division board (8) correspond water outlet department and articulate and install lid shroud plate (22), the outer side limit of lid shroud plate (22) and hold between the chamber wall in chamber articulated mounting have supplementary compact structure (23) that compress tightly.

2. A primary filter unit for treatment of wastewater as set forth in claim 1, wherein: the cleaning structure (11) comprises a fixed plate (12), a mounting plate (13), protruding plates (14), mounting rods (15), a cleaning wheel (18) and a servo motor (20), the mounting plate (13) is vertically fixed at the bottom of the fixed plate (12), the two protruding plates (14) are symmetrically fixed on the outer side edge of the mounting plate (13), the mounting rod (15) is rotatably arranged between the two protruding plates (14), a first bevel gear (16) is fixedly sleeved on the mounting rod (15) at an equal distance, one end of the mounting rod (15) penetrates through the top protruding plate (14) to extend out, an engaging wheel (17) is fixedly arranged at the extending end of the mounting rod, a transmission assembly (19) for assisting the rotation of the engaging wheel (17) is arranged inside the fixed plate (12), the filter screen frame (9) is of an L-shaped block structure, and the servo motor (20) is installed on the outer side edge of the filter screen frame (9), a rotating rod (21) is installed at the front end of a crankshaft of the servo motor (20), the rotating rod (21) is arranged on the fixing plate (12) in a penetrating mode, the rotating rod (21) is in threaded fit with the fixing plate (12), a cleaning wheel (18) is arranged on one side edge, away from the protruding plate (14), of the mounting plate (13) in an equidistance rotating mode, the cleaning wheel (18) penetrates through the mounting plate (13) to extend out, and penetrates through the end to be installed with a second bevel gear (181) matched with the first bevel gear (16).

3. A primary filter unit for treatment of wastewater as set forth in claim 2, wherein: drive assembly (19) include worm wheel dish (191), driving plate (192) and rolling disc (193), driving plate (192) are discoid, and a side center department of driving plate (192) is fixed with worm wheel dish (191) through the connecting rod, fixed plate (12) inside rotation is provided with rolling disc (193), through chain drive between worm wheel dish (191) and rolling disc (193), fixed plate (12) are stretched out to one section of rolling disc (193), the opposite side of driving plate (192) is inlayed through the spliced pole and is established and install in mounting panel (13), the outer fringe and the meshing wheel (17) meshing of driving plate (192), and the diameter of driving plate (192) is greater than the diameter of meshing wheel (17).

4. A primary filter unit for treatment of wastewater as set forth in claim 2, wherein: filter screen frame (9) are close to top department and are fixed with the cooperation piece, fixed plate (12) are close to cooperation piece one side integrated into one piece and are provided with spacing (121), offer on the cooperation piece and supply spacing (121) gliding spout, and the cooperation piece corresponds the outer fringe of spout and is provided with the meshing tooth's socket, the outer fringe meshing of meshing tooth's socket and rolling disc (193).

5. A primary filter unit for use in the treatment of wastewater as set forth in claim 4, wherein: the limiting strip (121) is of a T-shaped strip structure, and a plurality of balls are embedded on the outer side edge of the limiting strip (121).

6. A primary filter unit for treatment of wastewater as set forth in claim 1, wherein: the barrier plate (3) is of a V-shaped plate structure, sealing gaskets are symmetrically fixed on the outer side edge of the barrier plate (3), hinged columns are fixed at the bending points of the barrier plate (3), and meshing columns (7) are fixed at the tops of the hinged columns.

7. A primary filter unit for treatment of wastewater as set forth in claim 1, wherein: adjust structure (4) including rotating motor (5) and cooperation board (6), rotate motor (5) and install on stretching out the board, and stretch out the board and fix in rose box (1) top department, the spindle front end that rotates motor (5) passes and stretches out the board, and stretches out the end and be fixed with threaded rod (51), wear to establish on threaded rod (51) and install cooperation board (6), the outer fringe meshing of a side of cooperation board (6) and meshing post (7), cooperation board (6) bottom department is provided with the stopper, rose box (1) bottom department sets up and supplies the gliding channel of stopper.

8. A primary filter unit for treatment of wastewater as set forth in claim 1, wherein: the pressing structure (23) comprises a sleeve (24), two sliding rods (25), a sliding piece (26) and a jacking spring (27), wherein the jacking spring (27) is of a cylindrical structure, the jacking spring (27) is provided with two sliding grooves, the sliding grooves are formed in the jacking spring (27), the sliding rods (25) are arranged in the sliding grooves in a sliding mode, the sliding pieces (26) are fixed between the two sliding rods (25), and the jacking spring (27) for assisting in pushing the sliding rods (25) is arranged in the sliding grooves.

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a primary filtering device for sewage treatment.

Background

Sewage treatment is a process of purifying sewage to meet the water quality requirement of discharging the sewage into a certain water body or reusing the sewage. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. The sewage treatment is generally classified into production sewage treatment and domestic sewage treatment according to the classification of sewage sources. The production sewage comprises industrial sewage, agricultural sewage, medical sewage and the like, and the domestic sewage is sewage generated in daily life and refers to complex mixtures of various forms of inorganic matters and organic matters.

Primary filter equipment that current sewage treatment used filters through the filter screen mostly, need shut down the filter screen clearance after using a period, and is comparatively troublesome, and mostly through artifical clearance, workman intensity of labour is great.

Disclosure of Invention

The present invention is directed to a primary filtration device for sewage treatment to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a primary filtering device for sewage treatment comprises a filtering box, an adjusting structure, a partition plate, a filtering net rack, a cleaning structure and a covering plate, wherein the filtering box is of a box-shaped structure, two ends of the filtering box are respectively provided with a communicating cylinder in an integrated forming mode, the outer side edge of the communicating cylinder is provided with a mounting ring in an embedded mode, and the mounting ring is provided with a fixing hole for fixing a bolt;

the filter box is internally provided with a containing cavity, the inside of the containing cavity is divided into two filter cavities by an I-shaped partition plate, the top of the filter box is embedded with and provided with an observation window corresponding to the filter cavities, two ends of the partition plate are arranged in a V-shaped inclined manner, a water inlet and a water outlet are symmetrically fixed at two ends of the partition plate, a filter screen frame is installed at the middle section of each of the two filter cavities in a vertical insertion manner, a filter screen is installed on the filter screen frame, a cleaning structure for assisting cleaning is installed at one side, corresponding to the water inlet, of the filter screen on the filter screen frame, a transmission motor for driving the filter screen frame to move is installed in the filter cavity, a transmission rod is installed at the front end of a machine shaft of the transmission motor, a protruding ring is fixed;

the utility model discloses a baffle plate, including division board, baffle plate, water inlet, baffle plate, water outlet, division board, baffle plate, rose box, baffle plate, division board, baffle plate, division board, baffle plate.

Preferably, the cleaning structure comprises a fixed plate, a mounting plate, protruding plates, a mounting rod, a cleaning wheel and a servo motor, the mounting plate is vertically fixed at the bottom of the fixed plate, the two protruding plates are symmetrically fixed on the outer side edge of the mounting plate, the mounting rod is rotatably arranged between the two protruding plates, a first bevel gear is fixedly arranged on the mounting rod in an equidistant manner, one end of the mounting rod penetrates through the top protruding plate to extend out, the extending end of the mounting rod is fixedly provided with a meshing wheel, an auxiliary meshing wheel rotating transmission assembly is arranged inside the fixed plate, the filter screen frame is of an L-shaped block structure, the servo motor is arranged on the outer side edge of the filter screen frame, a rotating rod is arranged at the front end of a machine shaft of the servo motor and penetrates through the fixed plate, the rotating rod is in threaded fit with the fixed plate, the cleaning wheel is rotatably arranged on one side edge of the mounting plate far away, the cleaning wheel penetrates through the mounting plate to extend out, and a second bevel gear matched with the first bevel gear is mounted at the penetrating end of the cleaning wheel.

Preferably, drive assembly includes worm wheel dish, driving plate and rolling disc, the driving plate is discoid, and a side center department of driving plate is fixed with the worm wheel dish through the connecting rod, the inside rotation of fixed plate is provided with the rolling disc, through the chain drive between worm wheel dish and the rolling disc, the fixed plate is stretched out to one section of rolling disc, the opposite side of driving plate inlays through the spliced pole and establishes and installs in the mounting panel, the outer fringe and the meshing of driving plate take turns to the meshing, and the diameter of driving plate is greater than the diameter of meshing wheel.

Preferably, the filter screen frame is close to top department and is fixed with the cooperation piece, the fixed plate is close to cooperation piece one side integrated into one piece and is provided with spacing, offers on the cooperation piece to supply the gliding spout of spacing, and the cooperation piece corresponds the outer fringe of spout and is provided with the meshing tooth's socket, the outer fringe meshing of meshing tooth's socket and rolling disc.

Preferably, the limiting strip is of a T-shaped strip structure, and a plurality of balls are embedded and mounted on the outer side edge of the limiting strip.

Preferably, the blocking plate is of a V-shaped plate structure, sealing gaskets are symmetrically fixed on the outer side edge of the blocking plate, a hinge column is fixed at the bending point of the blocking plate, and a meshing column is fixed at the top of the hinge column.

Preferably, adjust the structure including rotating motor and cooperation board, rotate the motor and install on stretching out the board, and stretch out the board and fix in rose box top department, the spindle front end that rotates the motor passes and stretches out the board, and stretches out the end and be fixed with the threaded rod, wear to establish on the threaded rod and install the cooperation board, a side of cooperation board and the outer fringe meshing of meshing post, cooperation board bottom department is provided with the stopper, rose box bottom department sets up and supplies the gliding channel of stopper.

Preferably, compact structure includes sleeve, slide bar, gleitbretter and top tight spring, top tight spring is cylindric structure, top tight spring is provided with two, the inside sliding tray that has seted up of top tight spring, the inside slide bar that slides of sliding tray is provided with, is fixed with the gleitbretter between two slide bars, is provided with the supplementary tight spring in top that promotes the slide bar in the sliding tray.

The invention has the technical effects and advantages that: the primary filter device for sewage treatment can be divided into two filter chambers by the division plate and the stop plate arranged in the filter box and the rotating motor in the adjusting structure, the threaded rod, the matching plate and the matching between the meshing columns, so that the filter device can be conveniently staggered for cleaning, and can be simultaneously started when the filtered water amount is larger, so that the efficiency is improved, by the cleaning structure arranged on the filter screen frame, the fixed plate, the limit block, the mounting plate, the protruding plate, the mounting rod, the first bevel gear, the meshing wheel, the cleaning wheel, the second bevel gear, the transmission assembly and the servo motor in the cleaning structure, and the matching between the meshing tooth grooves on the rotating rod and the filter screen frame, the cleaning of the filter screen and the movement of the fixed plate can be simultaneously realized by one motor in the transmission process, so that the integral cleaning cost is reduced, and meanwhile, the manual cleaning can be avoided, improve holistic work efficiency, cover board and compact structure through setting up, cooperation between sleeve, slide bar, gleitbretter, the tight spring in top among the compact structure can assist the top tightly to delivery port department in the course of the work, and then there is the water liquid entering in the filter chamber that does not lead to water, and then makes things convenient for the filter screen clearance. This elementary filter equipment that sewage treatment used, reasonable in design can clear up the filter screen in the course of the work, can avoid the manual work to clear up, avoids rotating the clearance through a plurality of motors when clearing up simultaneously, has reduced device overall cost, is fit for using widely.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a cross-sectional view taken at A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic diagram of the construction of a screen frame of the present invention;

FIG. 5 is a schematic structural view of a cleaning structure according to the present invention;

fig. 6 is a partial cross-sectional view of the structure of fig. 5 at B-B in accordance with the present invention.

In the figure: 1 filter box, 2 observation windows, 3 blocking plates, 4 adjusting structures, 5 rotating motors, 51 threaded rods, 6 matching plates, 7 meshing columns, 8 partition plates, 9 filter screen frames, 10 transmission motors, 101 transmission rods, 11 cleaning structures, 12 fixing plates, 121 limiting strips, 13 mounting plates, 14 protruding plates, 15 mounting rods, 16 first bevel gears, 17 meshing wheels, 18 cleaning wheels, 181 second bevel gears, 19 transmission components, 191 worm wheel discs, 192 transmission discs, 193 rotating discs, 20 servo motors, 21 rotating rods, 22 cover plates, 23 pressing structures, 24 sleeves, 25 sliding rods, 26 sliding blades and 27 jacking springs.

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.

The invention provides a primary filtering device for sewage treatment as shown in figures 1-6, which comprises a filtering box 1, an adjusting structure 4, a partition plate 8, a filtering net rack 9, a cleaning structure 11 and a cover plate 22, wherein the filtering box 1 is of a Chinese character 'zhong' box-shaped structure, two ends of the filtering box 1 are integrally provided with a communicating cylinder, the outer side edge of the communicating cylinder is embedded and provided with a mounting ring, and the mounting ring is provided with a fixing hole for fixing a bolt;

the inside chamber that holds that is provided with of rose box 1, two filter chambers are cut apart through the division board 8 of I shape to the chamber inside that holds, filter box 1 top corresponds filter chamber department and inlays to establish and install observation window 2, the both ends of division board 8 are the slope setting of V type, the both ends symmetry of division board 8 is fixed with water inlet and delivery port, and the middle part of two filter chambers is all pegged graft perpendicularly and is installed filter screen frame 9, install the filter screen on the filter screen frame 9, the clearance structure 11 of supplementary clearance is installed to one side that the filter screen corresponds the water inlet on the filter screen frame 9, installs the drive motor 10 that drives filter screen frame 9 and remove in the filter chamber, the shaft front end of drive motor 10 installs transfer line 101, the outside limit middle part of filter screen frame 9 is fixed with outstanding ring, screw-thread fit between outstanding ring and the transfer line 101;

baffle plate 8 corresponds the articulated baffle plate 3 that installs of one end of water inlet, the hinged end of baffle plate 3 passes filter box 1 and stretches out, and stretches out the end and be provided with and drive baffle plate 3 pivoted regulation structure 4, baffle plate 8 corresponds the articulated cover board 22 of installing of water outlet department, the articulated compact structure 23 of supplementary compressing tightly of installing between the chamber wall that holds the chamber of the outside limit of cover board 22.

Specifically, the cleaning structure 11 comprises a fixed plate 12, a mounting plate 13, a protruding plate 14, a mounting rod 15, a cleaning wheel 18 and a servo motor 20, the cleaning structure 11 can simultaneously clean the filter screen and move the fixed plate 12 by one motor in the transmission process, so as to reduce the overall cleaning cost, and simultaneously avoid manual cleaning, thereby improving the overall working efficiency, the mounting plate 13 is vertically fixed at the bottom of the fixed plate 12, two protruding plates 14 are symmetrically fixed on the outer side edge of the mounting plate 13, the mounting rod 15 is rotatably arranged between the two protruding plates 14, a first bevel gear 16 is fixedly sleeved on the mounting rod 15 at equal distance, one end of the mounting rod 15 penetrates through the top protruding plate 14 to extend out, the extending end is fixedly provided with a meshing wheel 17, a transmission component 19 for assisting the rotation of the meshing wheel 17 is arranged inside the fixed plate 12, filter screen frame 9 is L type block structure, and installs servo motor 20 on filter screen frame 9's the outside limit, bull stick 21 is installed to servo motor 20's spindle front end, bull stick 21 wears to establish on fixed plate 12, and screw-thread fit between bull stick 21 and the fixed plate 12, mounting panel 13 is kept away from on one side of protruding board 14 equidistance and is provided with clearance wheel 18, and clearance wheel 18 can be the brush dish, clearance wheel 18 passes mounting panel 13 and stretches out, and passes the end and install and second bevel gear 181 with first bevel gear 16 complex.

Specifically, drive assembly 19 includes worm wheel dish 191, driving plate 192 and rolling disc 193, drive assembly 19 can make fixed plate 12 remove, and makes installation pole 15 rotate, driving plate 192 is discoid, and one side center department of driving plate 192 is fixed with worm wheel dish 191 through the connecting rod, the inside rotation of fixed plate 12 is provided with rolling disc 193, through chain drive between worm wheel dish 191 and the rolling disc 193, fixed plate 12 is stretched out to one section of rolling disc 193, the opposite side of driving plate 192 is inlayed through the spliced pole and is established and install in mounting panel 13, the outer fringe and the meshing wheel 17 meshing of driving plate 192, and the diameter of driving plate 192 is greater than the diameter of meshing wheel 17.

Specifically, the strainer holder 9 is close to top department and is fixed with the cooperation piece, fixed plate 12 is close to cooperation piece one side integrated into one piece and is provided with spacing 121, sets up on the cooperation piece and supplies the gliding spout of spacing 121, and the cooperation piece corresponds the outer fringe of spout and is provided with the meshing tooth's socket, meshing tooth's socket and the outer fringe meshing of rolling disc 193.

Specifically, spacing strip 121 is T type strip structure, inlay on the outside limit of spacing strip 121 and establish and install a plurality of ball, the ball can play supplementary rolling effect in the course of the work.

It is specific, barrier plate 3 is V-shaped plate structure, the symmetry is fixed with sealed the pad on barrier plate 3's the outside limit, barrier plate 3 can shelter from water liquid well, during concrete implementation, can be fixed with a curved even board in the one end that the hinged end was kept away from to barrier plate 3, and then avoids when covering partial water liquid stifled in contained angle department to produce the resistance, can open two water inlets simultaneously when the water yield is great and filter that drains, closes the water inlet that corresponds when clearing up screen frame 9, the bending point department of barrier plate 3 is fixed with the hinge post, and hinge post top department is fixed with meshing post 7.

It is specific, adjust structure 4 including rotating motor 5 and cooperation board 6, rotate motor 5 and install on stretching out the board, adjust structure 4 and can conveniently carry out fine adjustment to barrier plate 3, and stretch out the board and fix in 1 top department of rose box, the spindle front end that rotates motor 5 passes and stretches out the board, and stretches out the end and be fixed with threaded rod 51, wear to establish on the threaded rod 51 and install cooperation board 6, a side of cooperation board 6 and the outer fringe meshing of meshing post 7, 6 bottom departments of cooperation board are provided with the stopper, 1 bottom department of rose box has seted up and has supplied the gliding channel of stopper.

It is specific, compact structure 23 includes sleeve 24, slide bar 25, gleitbretter 26 and top tight spring 27, compact structure 23 can assist to compress tightly the processing to covering plate 22, avoids the water liquid backward flow, can make things convenient for subsequent strainer rack 9's cleaning work, top tight spring 27 is cylindric structure, top tight spring 27 is provided with two, the inside sliding tray of having seted up of top tight spring 27, the inside slip of sliding tray is provided with slide bar 25, is fixed with gleitbretter 26 between two slide bars 25, is provided with the supplementary tight spring 27 in top that promotes slide bar 25 in the sliding tray.

The working principle of the primary filtering device for sewage treatment is that when sewage needs to be filtered, a water inlet pipe and a water outlet pipe are fixed at two connecting cylinders through bolts, the sewage is introduced into a filtering box 1, the sewage enters a filtering cavity through an inlet, impurities in the sewage are filtered through a filter screen on a filter screen frame 9 in the filtering cavity, filtered water pushes up a cover plate 22 under the action of water pressure, a compression structure 23 is integrally contracted, the filtered water passes through the filter screen conveniently, after the primary filtering device is used for one time, a rotating motor 5 is started, the rotating motor 5 drives a threaded rod 51 to rotate when rotating, the threaded rod 51 is in threaded fit with a matching plate 6, the matching plate 6 is moved, the matching plate 6 is meshed with the outer edge of a meshing column 7 in the moving process of the matching plate 6, the meshing column 7 is rotated, and a blocking plate 3 is driven to cover the water inlet which is feeding, at the moment, the other water inlet is opened, impurities are filtered by opening a filter screen on a filter screen frame 9 in the filter cavity, simultaneously, a transmission motor 10 in the other filter cavity rotates, so that a transmission rod 101 rotates, the transmission rod 101 is in threaded fit with a protruding ring, so that the filter screen frame 9 extends, after the filter screen frame 9 extends, a servo motor 20 is started to rotate, so that a rotating rod 21 is driven to rotate, the rotating rod 21 is in threaded fit with a fixed plate 12, so that the fixed plate 12 integrally rotates, when the fixed plate 12 moves, a rotating disc 193 is meshed with a meshing tooth groove, so that the rotating disc 193 rotates, the rotating disc 193 and a worm wheel disc 191 are driven by a chain, so that the worm wheel disc 191 rotates, so that the driving disc 192 rotates, the driving disc 192 is meshed with the meshing wheel 17, so that a mounting rod 15 rotates, when the mounting rod 15 rotates, a first bevel gear 16 is driven to rotate, and the first bevel gear, and then make cleaning wheel 18 rotate, and then in the course of cleaning the filter screen, can adjust the whole position of fixed plate 12 through the positive and negative rotation of servo motor 20, also can be in the course of moving cleaning wheel 18 and clear up, it is enough to start drive motor 10 after clearing up and resume filter screen frame 9 to clear up. This elementary filter equipment that sewage treatment used, reasonable in design can clear up the filter screen in the course of the work, can avoid the manual work to clear up, avoids rotating the clearance through a plurality of motors when clearing up simultaneously, has reduced device overall cost, is fit for using widely.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.