40results about How to "Reduce cleaning operations" patented technology

The invention discloses a road repairing device, and belongs to the technical field of road repairing. The road repairing device comprises a vehicle body, a breaking and flat ramming mechanism, an asphalt filling mechanism and a compacting roller, wherein the breaking and flat ramming mechanism, the asphalt filling mechanism and the compacting roller are sequentially mounted on the vehicle body from the front end to the rear end in the marching direction of the vehicle body; the breaking and the flat ramming mechanism comprises a flat ramming gravity plate, and a drill bit which is fixed to the lower surface of the flat ramming gravity plate; the upper part of the flat ramming gravity plate is connected to a vibrating motor; a rotating shaft and a sector turntable which is fixed to one side of the rotating plate are arranged right above the vibrating motor; an arc-shaped hole is formed in the sector turntable; a moving rod which vertically passes through the arc-shaped hole is arrangedin the arc-shaped hole; a connecting rod is connected between the moving rod and the vibrating motor; two ends of the connecting rod are correspondingly hinged with the moving rod and the vibrating motor. According to the road repairing device, a broken and old pavement can be hammered and vibrated to realize combined breaking through one mechanism, and the broken pavement can be completely rammed, levelled and compacted; in addition, related acting strength is high; the breaking effect and the flat ramming effect are good.

A ceramic coating member is provided for improving durability of a member arranged inside a container of a semiconductor processing apparatus for performing plasma etching process or the like under strong corrosion resistant environment. A porous layer composed of a sprayed coating of an oxide material in the group IIIa in the periodic table is provided on the front plane of a metal or nonmetal base material, directly or through an undercoat layer. On the layer, a secondary recrystallized layer is formed by irradiation of high energy of electronic beams, laser beams and the like.

The invention discloses an intelligent range hood control system, and belongs to the technical field of range hoods. The intelligent range hood control system comprises a gesture obtaining unit and agesture control unit, the gesture obtaining unit is used for obtaining gesture information and transmitting the gesture information to the gesture control unit; and the gesture control unit is used for identifying the gesture information to obtain a corresponding control instruction, and controlling the motions of a range hood according to the control instruction. According to the intelligent range hood control system, the various motions of the range hood are controlled by gestures, so that the control of the range hood is more intelligent, and the intelligent experience is increased. In addition, a user is not required to manually trigger physical keys, especially when water, oil and other substances exist on hands of the user, pollution to a control panel of the range hood can be avoided, cleaning operation is reduced, and the labor capacity of a kitchen is reduced.

The invention relates to a multistage filtering deduster. The multistage filtering deduster comprises a shell, an ash bucket, a cover plate and a horizontally arranged separator plate mounted at the inner side of the shell, the separator plate divides the inner side of the shell into an upper part and a lower part which are not communicated, the ash bucket is mounted below the shell, the cover plate is mounted above the shell, a mixed flow chamber is formed among the shell, the ash bucket and the separator plate, a flow collecting chamber is formed among the shell, the cover plate and the separator plate, the shell is provided with an air inlet communicated with the mixed flow chamber, and the shell is provided with an air outlet communicated with the flow collecting chamber; the separatorplate is provided with an axially-vertically-arranged inner cylinder placed in the mixed flow chamber, the inner cylinder is rotatably connected with the separator plate, and a flow guiding chamber is formed at the inner side of the inner cylinder; the inner cylinder is provided with a special-shaped filter bag with opened top and bottom, placed below the inner cylinder, the vertical position ofthe special-shaped filter bag corresponds to the position of the air inlet, and the inner cylinder is provided with a pressurization fan placed at the inner side of the special-shaped filter bag; andthe separator plate is provided with a plurality of vertically-arranged micro-porous filter bags placed in the flow guiding chamber, and the upper ends of the micro-porous filter bags upwards go through the separator plate and are connected with the separator plate.

The invention discloses a drama movie and television literature teaching display device, relates to the technical field of display devices, and solves the problems that an existing display device generally only uses a single media display device, the display effect is not remarkable, the enjoyment is relatively low, when a blackboard is used for display, handwriting on the blackboard needs to be repeatedly erased, and the use is troublesome. The device comprises a mounting base; a group of platforms are arranged at the front part of the mounting base; the front end face of the top of the mounting base is connected with a set of secondary display light-transmitting plates in a hinged mode. The top of the mounting base is fixedly connected with a group of light-transmitting plate driving pieces; and the top of the mounting base is slidably connected with a group of light-transmitting plate driving sliding blocks. Secondary display is achieved, the display effect is improved, the interactive display effect can be achieved, the enjoyment is improved, meanwhile, a sliding type writing blackboard is adopted, the writing blackboard is cleaned while the writing blackboard is unfolded, thecleaning operation on the writing blackboard is reduced, and use is more convenient.

The invention discloses a multi-bubble adsorption type impurity removal motor maintenance workbench based on the Pascal's law. The motor maintenance workbench comprises an upper end adjustable fastening device, a metal coil dispatching device, a splicing supporting bottom plate, a rotary cutting device, an interference fit type motor pressing and fixing device, a Pascal's law dirt removal device and waste motor equipment. The invention belongs to the technical field of motor maintenance operation workbenches, and particularly relates to a multi-bubble adsorption type impurity removal motor maintenance workbench based on the Pascal's law, through a plurality of groups of triangular pyramid frustum-shaped splicing supporting structures, on the basis of ensuring the original supporting effect on motor equipment, a user can conveniently collect waste generated in the motor maintenance process, the Pascal's law is used in cooperation with the easy-to-foam material solution, the adsorption effect during waste cleaning is enhanced, semi-automatic cleaning of the device is achieved, and the characteristics of the non-Newtonian fluid are combined, the displacement phenomenon of the motor caused by strenuous vibration in the maintenance process of the motor is avoided.

The invention provides a gate opening and closing mechanism, wherein the opening part of a basket body (101) is closed from below through a gate (1) and can be opened or closed through the sliding gate (1). No foreign body will enter the device even when the foreign body remains on the gate (1) during the opening or closing of the gate (1). Or furthermore, no scratch or dirt will remain on the surface of the gate (1). The lower side of the basket body is provided with an anti-entrance sheet (6) in such a way that the surface of the gate is scratched during the opening or closing of the gate (1). Or the lower side of the basket body is provided with an anti-entrance unit and a take-out part. The anti-entrance unit is provided with ribs configured in such a way that the opening and closing track on the surface of the gate is reserved with a prescribed gap. The upper part of the take-out part is also provided with ribs configured in such a way that the ribs in the opening direction are substantially vertical to the upper surface of the gate. Meanwhile, the ribs of the anti-entrance unit and the ribs of the take-out part are engaged with each other.

The invention relates to the field of the manufacturing process of wining making equipment and provides a manufacturing method of a wine-brewing grain crushing device in order to solve the problems that broken grains appear in the crushing process of an existing grain crushing device and can be attached to a screen net to block the screen net. The manufacturing method of the wine-brewing grain crushing device, provided by the invention, comprises the steps of manufacturing of the crushing device, manufacturing of a collection box, manufacturing of a dust filtration mechanism and the like, wherein the manufacturing process of the collection tank includes the steps of selecting a box as the collection box, and forming a collection port and a collection groove in one sidewall of the collection box; the manufacturing process of a screen plate includes the steps of hinging one end of the screen plate to a machine case, and stretching the other end of the screen plate into the collection port of the collection box; the manufacturing process of the dust filtration mechanism includes the steps of selecting a friction plate and a dust removal film, connecting one end of the friction plate to the machine case, placing the other end of the friction plate into the collection groove of the collection box so that the friction plate can vibrate; the dust removal film is arranged above the friction plate so that the friction plate can make contact with the dust removal film when vibrating, and one end of the friction plate is also connected with the screen plate through a connecting part.

The invention relates to the field of wine making equipment and provides a wine-making grain smashing device with a dust removal function. The wine-making grain smashing device with the dust removal function aims at solving the problem that as for an existing grain device, fragments generated in the smashing process adhere to a screen to cause blockage of the screen. The wine-making grain smashing device with the dust removal function comprises a machine shell; a feed inlet is formed in the upper end of the machine shell, a discharge outlet is formed in the lower end of the machine shell, and a smashing cavity is formed in the machine shell; a sieve plate capable of vibrating is connected to the side wall of the machine shell; one end of the sieve plate is hinged to the side wall of the machine shell, a collecting box is arranged at the other end of the sieve plate, and the sieve plate extends into the collecting box; a dust removal mechanism is arranged below the machine shell and comprises a friction plate and a dust removal film, the dust removal film is located above the friction plate, and the friction plate can make contact with the dust removal film in the vibrating process; one end of the friction plate is connected to the machine shell; a collecting groove is formed in the side wall of the collecting box, and the height of the collecting groove is greater than the thickness of the friction plate; the other end of the friction plate extends into the collecting groove; and the friction plate is connected with the sieve plate through a connector.

The invention provides water pump cover inner hole machining equipment, and relates to the technical field of water pump machining equipment. The water pump machining equipment comprises a fixing base, a motor is fixed to one side of the top of the fixing base, a linkage rod is welded to the end of an output shaft of the motor, an outer cylinder is connected to the end of the linkage rod, a connecting block is fixed to the inner wall of the outer cylinder, an inner cylinder in sliding contact with the connecting block is arranged inside the outer cylinder, a telescopic arc-shaped abutting rodpenetrates through the inner cylinder, and the end of the arc-shaped abutting rod is movably connected with the inner wall of the outer cylinder. According to the water pump cover inner hole machiningequipment, a screw rod is rotated to push an abutting plate to enable the inner cylinder and the outer cylinder to rotate relatively, the arc-shaped abutting rod continuously moves towards the centerof the inner cylinder at the moment, the end of the arc-shaped abutting rod abuts against a pump cover till the arc-shaped abutting rod cannot move, the pump cover can be clamped, the operation is simple and rapid, and the problems that pump cover fixing operation is slow and the axis is not consistent with the axis of a clamping device are solved.

The invention discloses a trachea cannula facilitating oral cavity cleaning. The trachea cannula comprises an inserting pipe inner pipe, a fixed end ring is fixedly mounted at the top of the insertingpipe inner pipe; a connecting end ring is movably mounted in the fixed end ring; a clamping plate is fixedly installed at the bottom of the connecting end ring, sliding grooves are formed in the twosides of the top of the clamping plate, first telescopic columns are movably installed in the sliding grooves, cleaning brushes are fixedly installed at the ends of the first telescopic columns, second telescopic columns are movably installed in the sliding grooves, and spraying rings are fixedly installed at the ends of the second telescopic columns. Devices such as the fixed end ring and the connecting end ring are arranged; the trachea cannula is simple in overall structure, practical in function and convenient to disassemble, replace and maintain subsequently, so that overall medical resources are effectively saved to a certain extent, the trachea cannula adopts a quick-change connector device, a cleaning brush head can be replaced quickly, cleaning operation is convenient and quick, the cleaning effect is remarkable, and rehabilitation of a patient is facilitated.

The invention discloses a road repairing device, and belongs to the technical field of road repairing. The road repairing device comprises a vehicle body, a breaking and flat ramming mechanism, an asphalt filling mechanism and a compacting roller, wherein the breaking and flat ramming mechanism, the asphalt filling mechanism and the compacting roller are sequentially mounted on the vehicle body from the front end to the rear end in the marching direction of the vehicle body; the breaking and the flat ramming mechanism comprises a flat ramming gravity plate, and a drill bit which is fixed to the lower surface of the flat ramming gravity plate; the upper part of the flat ramming gravity plate is connected to a vibrating motor; a rotating shaft and a sector turntable which is fixed to one side of the rotating plate are arranged right above the vibrating motor; an arc-shaped hole is formed in the sector turntable; a moving rod which vertically passes through the arc-shaped hole is arrangedin the arc-shaped hole; a connecting rod is connected between the moving rod and the vibrating motor; two ends of the connecting rod are correspondingly hinged with the moving rod and the vibrating motor. According to the road repairing device, a broken and old pavement can be hammered and vibrated to realize combined breaking through one mechanism, and the broken pavement can be completely rammed, levelled and compacted; in addition, related acting strength is high; the breaking effect and the flat ramming effect are good.

The invention discloses a protective bracket device for a hemodialysis puncture site, comprising a base. The present invention utilizes a first-stage motor to drive two racks to drive the movable base to telescopically move in the base, so as to arrange telescopically adjustable socket plates and telescopic plates in the base. The water storage box is used to cover and wash the bleeding caused by the puncture; the cam on the transmission shaft is used to continuously drive the lifting plate elastically supported by the strong spring; and use the side protection plate to set the load-bearing protection plate on the PTZ, so that the arm at the dialysis puncture site can be movably placed on the load-bearing protection plate and the side protection plate, so as to perform micro-vibration massage on the arm; The connecting piston and the upper protective plate are installed on the hanging plate, and the upper protective plate that can elastically move up and down and open and close is used to limit and fix the arm that vibrates.

The invention belongs to the technical field of food processing devices, and specifically discloses a pteridium aquilinum desalination device. The device comprises a worktable and a motor, a cleaningframe, a cross rod, a vertical rod, a first sleeve, a bracket, a cleaning barrel, bulging teeth, a rack frame, a second sleeve, a sliding rod and a first spring, an elastic pressing plate is arrangedin the cleaning barrel along the length direction of the cleaning barrel, a push rod is embedded in the pressing plate, both ends of the ejector rod extend out of the cleaning barrel, both sides of the upper end of the cleaning barrel are provided with a support plate, a chute is arranged on the support plate, the inner wall of the chute is provided with a bulge staggered and arranged along the length direction, the transverse rod is positioned between the bulges, both sides of the sliding chute are respectively provided with a through groove for an access of the ejector rod; water is filled into the lower part of the cleaning frame. The device is mainly used for solving the problem that the cleaning effect is not good when cleaning salted pteridium aquilinum.

The invention discloses a multi-bubble adsorption impurity removal motor maintenance workbench based on Pascal's law. , Pascal's law decontamination device and waste electrical equipment. The invention belongs to the technical field of motor maintenance operation workbench, and specifically refers to a motor maintenance workbench based on Pascal's law, multi-bubble adsorption type impurity removal, through multiple groups of triangular truss spliced ​​support structures, in order to ensure the original support for motor equipment On the basis of this, it is convenient for the user to collect the waste generated during the motor maintenance process, and then use Pascal's law together with the easy-to-foam material solution to enhance the adsorption effect when cleaning the waste, and realize the semi-automatic cleaning of the device, combined with the non-Newtonian fluid Features, avoiding the occurrence of motor displacement due to severe vibration during motor maintenance.

The invention relates to the technical field of garbage cans, in particular to an intelligent compression garbage can, which includes an outer cylinder, an inner cylinder, a motor and a rotating shaft. The side wall of the outer cylinder is provided with a garbage input port and a garbage cleaning port, and the bottom of the inner cylinder is fixed with a The rotating shaft is connected to the outer cylinder in rotation, and the rotating shaft is connected to the output shaft of the motor. The side wall of the inner cylinder is provided with a water hole. , There is a fixed plate on the top of the outer cylinder, a threaded hole is provided on the fixed plate, a threaded rod is fixedly connected to the extruded plate, the threaded rod is connected to the fixed plate by threads, and an elastic water bag is arranged between the fixed plate and the extruded plate , a liquid storage tank is arranged above the fixing plate, and the liquid storage tank is used to hold disinfectant, a first one-way valve is arranged on the elastic water bag, and a second one-way valve is arranged on the extrusion plate. The invention provides an intelligent compressed garbage can, which can notify the user after the garbage can is full, and there is no false alarm problem caused by irregular garbage.

The application of the present invention belongs to the technical field of food processing equipment, and specifically discloses a bracken desalination equipment, including a workbench and a motor, a cleaning frame, a horizontal bar, a vertical bar, a first sleeve, a bracket, a cleaning bucket, convex teeth, and a rack frame, a second sleeve, a slide rod, and a first spring, and an elastic pressure plate is arranged in the cleaning bucket along the length direction of the cleaning bucket, and a push rod is embedded in the pressure plate, and both ends of the push rod protrude from the A cleaning barrel, both sides of the upper end of the cleaning barrel are provided with support plates, and a chute is provided on the support plate, and the inner wall of the chute is provided with staggered protrusions along the length direction, and the cross bar is located on the protrusion Between, both sides of the chute are provided with through grooves for the ejector rod to enter and exit; the lower part of the cleaning frame is equipped with water. The invention is mainly used for desalination of bracken and solves the problem of poor cleaning effect when cleaning salted bracken.

The invention discloses a device and a method for detecting color fastness to perspiration. The device comprises an exchange cylinder and a base for supporting the exchange cylinder, a rod body is fixed at the bottom of an inner cavity of the exchange cylinder; the rod body is arranged in the axis direction of the exchange cylinder. The rod body is sleeved with a roller. The top of the roller canrotate in the axis direction of the rod body after being connected with a servo motor, a groove is formed in the side wall of an outer cavity of the roller in the length direction, an embedding grooveis formed in the side wall of an inner cavity of the exchange cylinder in the length direction, the embedding groove and the groove are used for fixing the two ends of the volute spiral spring respectively, and fabric is attached and fixed to the surface of the volute spiral spring. A plurality of through holes are formed in the surface of the volute spiral spring; histidine is injected into theexchange cylinder, the volute spiral spring is wound and released in the exchange cylinder under the driving of the operation of the servo motor, and the fabric is rubbed by utilizing the through hole. Compared with the conventional perspiration-resistant color fastness detection, the method has the advantages that the improvement and the efficiency are improved.

The embodiment of the present invention discloses an intelligent mechanical manufacturing workstation, which specifically relates to the technical field of mechanical manufacturing. The top end of the longitudinal transplanting mechanism is fixed with a first sliding seat, the upper surface of the first sliding seat is fixed with a first linear motor, and the top of the first linear motor is fixed with a punching mechanism. The top of the body is fixed with a conveying mechanism, and the top of the body is close to the top of the conveying mechanism. There is a second sliding seat, and the outer surface of the second sliding seat is fixedly installed with a stand. In the present invention, the degree of mechanization and intelligence of the entire mechanical manufacturing workbench is relatively high, intelligent drilling operation can be realized, the operation is convenient, and the efficiency of mechanical manufacturing is improved.

The invention discloses a sand and gravel filtering device for petroleum exploitation, comprising a feeding guide pipe, an output end of the feeding guide pipe is fixedly connected with an inner filter mechanism, the output end of the inner filter mechanism is fixedly connected with a discharge outlet, and the inner filter mechanism includes a filter A through slot, one end of the inner side of the filter through slot is rotatably connected with a folded filter plate, an active slot is arranged in the middle of one side of the filter through slot, and the left end of the folded filter plate is fixedly connected with an outer extension pull plate, and the outer extension pull plate passes through And extends to the outside of the movable slot, the inside of the pleated filter plate is evenly provided with filter adsorption holes, the inside of the filter through slot and located on the front of the pleated filter plate is fixedly connected with a positioning bushing, the interior of the positioning bushing penetrates and is screwed. There is a transmission tie rod, and the invention relates to the technical field of oil exploitation sand. The oil extraction sand and gravel filter device can increase the oil transmission resistance, reduce the oil flow rate, ensure the full filtration of the oil, and at the same time improve the filtration precision, and filter the fine particles together.

PROBLEM TO BE SOLVED: To prevent foreign matters from penetrating into a machine even when a shutter 1 is opened / closed with the foreign matters thereon and to prevent a surface of the shutter 1 from scratches and dirt, in a shutter opening / closing mechanism in which an opening of an enclosure 101 is closed from the lower side by the shutter 1 and the shutter 1 is slide openable / closable.SOLUTION: A penetration preventing film 6 is disposed on the lower side of the enclosure on the backside so as to rub the surface of the shutter 1 during opening / closing of the shutter 1. Or, penetration preventing means 8 (9) including a rib and disposed so as to be spaced from an opening / closing locus of the surface of the shutter 1 by a prescribed gap, and a scraping-out shape 7 including a rib in an upper part thereof and disposed substantially vertically on a top surface in an opening direction of the shutter 1 are provided and disposed so that the rib of the penetration preventing means 8 (9) and the rib of the scraping-out shape 7 are engaged with each other.

The invention discloses a method and system for removing vanadium from crude titanium tetrachloride, and the method comprises the following steps: mixing an organic matter for removing vanadium with an inhibitor to obtain a first mixed solution; mixing the first mixed solution with a crude titanium tetrachloride solution to obtain a second mixed solution; using a superheater for heating the second mixed liquid, so that the organic matter reacts with vanadium impurities in the crude titanium tetrachloride liquid; and separating the reacted material to obtain vanadium-removed titanium tetrachloride, wherein the inhibitor is used for inhibiting the reaction product of the organic matter and the vanadium impurity from further forming a viscous solid through a polymerization reaction. According to the vanadium removal method and system, formation of scaling substances in the superheater can be inhibited, the operation cycle of the vanadium removal process is prolonged, and stable and smooth operation of the vanadium removal process is guaranteed.

The invention discloses a teaching display device for drama film and television literature, relates to the technical field of display devices, and solves the problem that the existing display device generally only uses a single media display device, the display effect is not significant, and the interest is relatively low, when a blackboard is used for display When it is necessary to repeatedly erase the handwriting on the blackboard, the use of troublesome problems includes the installation seat; a group of lecterns are placed on the front of the installation seat; the top front end of the installation seat is hingedly connected with a group of secondary display transparent a light plate; a set of light-transmitting plate driving parts are fixedly connected to the top of the mounting seat; and a group of light-transmitting plate driving sliding blocks are slidably connected to the top of the mounting seat. The invention realizes the secondary display, improves the display effect, can realize the effect of interactive display, and improves the interest. At the same time, by using the sliding writing blackboard, the writing blackboard can be cleaned while the writing blackboard is unfolded, and the need for the writing blackboard is reduced. The writing and blackboard cleaning operation is more convenient to use.

The invention discloses a blank forming mold which structurally comprises a lock pin column pipe, a covering shaving frame mold groove, a parting surface groove block, a supporting column plate block,an ejector sleeve rod, a demolding bottom cushion block and a base plate. The covering shaving frame mold groove is matched with the parting surface groove block, and a through frame cover groove islocked through the parting surface groove block; and an I-shaped long shaft rod is erected in the through frame cover groove to form a mud guard type scraping and shaving cleaning layering surface effect through a semicircular piece sliding seat, a fan paddle separation ladder plate can also be effectively swept, brushed and extended, anti-bonding stripping operation of annular surface alignment inserting and embedding is formed, bonded inner groove impurities can be effectively removed in advance through blank preparation and forming, then through deslagging and sliding lining, the effect ofstripping and cleaning to guarantee inner formwork accurate pressing covering is achieved, the whole mold can precisely form a machined part in a mold-casting mode, seam allowance deviation is avoided, and the machining integrity of the seamlessly-spliced mold is improved.

The invention relates to a staggered spraying process. The process comprises the following steps that 1, a conveying belt works so as to convey a to-be-sprayed workpiece to a spraying chamber of a spraying machine; 2, reciprocating machines work so as to drive spraying mechanisms to horizontally move; and 3, spraying guns of the spraying mechanisms carry out spraying on the workpiece. During spraying, the two reciprocating machines drive the two spraying mechanisms to move in antiparallel directions correspondingly to form staggered spraying. The staggered spraying machine is further involved,and is applied to the staggered spraying process. According to the staggered spraying machine and the staggered spraying process, the original defect that all spray guns move together is changed, thetwo spray guns on a spray frame are moved in different directions, the interference when the spray guns spray the atomized paint out is reduced, the paint mist diffusing phenomenon in a spray chamberis reduced, the pollution to the inner wall of the spray machine and the pollution to the workpieces are reduced, and meanwhile the recovery rate of the paint is improved.

The invention relates to a telescopic folding striker plate for a ship unloader. The telescopic folding striker plate is arranged on the ship unloader and comprises a receiving plate, a first winch, a second winch, a striker plate body and a third winch; the receiving plate is hinged to one side of the top end of a hopper, a lifting lug is arranged on the receiving plate, and the striker plate body is hinged to the lifting lug; the striker plate body comprises an overturning plate and a telescopic plate; the first winch is located on the ship unloader, a first pulley is arranged on the receiving plate, and the first winch is connected with a first pulley through a first steel wire rope; the second winch is located on the receiving plate, a second pulley is arranged on the striker plate body, and the second winch is connected with a second pulley through a second steel wire rope; the third winch is located on the overturning plate and connected with the telescopic plate through a third steel wire rope. Materials can be prevented from being scattered in water or onto a ship board and a wharf in the grabbing process, material loss is effectively avoided, and meanwhile, environment pollution is avoided.

A high-viscosity material full-automatic backwashing coarse-filtration system comprises a valve device, an inlet connector, an outlet connector and multiple filtration chambers; the upper parts of the filtration chambers are all provided with an outlet, and all of the outlets are communicated with the outlet connector; the lower parts of the filtration chambers are all provided with an inlet, and all of the inlets are communicated with the inlet connector; the inlet connector is provided with a material inlet, a material outlet and a sewage draining exit communicated with the exterior; and the inlet connector is connected with the valve device, and the valve device is used to control opening and closing of the material inlet, the material outlet and the sewage draining exit of the inlet connector. When the inlet pressure of the filtration chambers is higher than or equal to a preset pressure difference value, the valve device controls the material inlet to be connected with the sewage draining exit, and a backwashing program is operated in the filtration chambers. Many links are reduced at the cleaning operation, operation problems of personnel are reduced, and time and manpower are saved.