CN110665261A

CN110665261A - Wastewater pretreatment device

Info

Publication number: CN110665261A
Application number: CN201911091165.3A
Authority: CN
Inventors: 郑林
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-09
Filing date: 2019-11-09
Publication date: 2020-01-10

Abstract

The invention discloses a wastewater pretreatment device, which comprises a sedimentation tank, a supernatant liquid tank, a stirring mechanism, a flow stopping mechanism, a gathering hopper, a middle through pipe, a discharging mechanism and a dosing mechanism, wherein the sedimentation tank is arranged in the upper clear liquid tank; sedimentation tank bottom lateral wall is equipped with a plurality of supporting legs, sedimentation tank bottom center is equipped with the gathering fill, the gathering is fought the bottom and is equipped with well siphunculus, be equipped with shedding mechanism on the well siphunculus, sedimentation tank upper portion periphery is equipped with the supernatant pond, the supernatant pond top is equipped with the mount, the mount passes through connecting plate fixed connection at the supernatant pond lateral wall, the mount center is equipped with rabbling mechanism, rabbling mechanism stretches into in the sedimentation tank, rabbling mechanism one side is equipped with medicine mechanism, it sets up on the mount to add medicine mechanism, be equipped with the current stopping mechanism on the sedimentation tank inside wall, be equipped with the waste water inlet tube on the sedimentation tank upper portion. The standing precipitation and the precipitated sludge of the wastewater are treated synchronously, the pretreatment amount of the wastewater is large, and the sludge treatment efficiency is high.

Description

Wastewater pretreatment device

Technical Field

The invention belongs to the technical field of industrial wastewater treatment, and particularly relates to a wastewater pretreatment device.

Background

As is well known, 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 also 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.

However, the existing wastewater treatment has the following problems which are difficult to solve: 1) the waste water to be treated has large capacity, the pretreatment waste water needs long standing and precipitating time, the sludge amount can not be treated effectively in time, a secondary sedimentation tank needs to be additionally arranged for flow splitting treatment, and the occupied area is large; 2) the longer the standing and settling time is, the more the sludge amount in the settling tank is increased, the sludge treatment needs to extract supernatant liquid and then carry out compression and separation treatment, the treatment efficiency of the sludge is low, and the treatment amount of the wastewater is limited.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a wastewater pretreatment device, wherein standing precipitation and precipitated sludge of wastewater are synchronously treated, the wastewater pretreatment amount is large, and the sludge treatment efficiency is high.

In order to achieve the purpose, the invention adopts the technical scheme that:

a wastewater pretreatment device comprises a sedimentation tank, a supernatant liquid tank, a stirring mechanism, a flow stopping mechanism, a gathering hopper, a middle through pipe, a discharging mechanism and a dosing mechanism; the side wall of the bottom of the sedimentation tank is provided with a plurality of supporting legs, the center of the bottom of the sedimentation tank is provided with a gathering hopper, the bottom of the gathering hopper is provided with a middle through pipe, the middle through pipe is provided with a discharging mechanism, the periphery of the upper part of the sedimentation tank is provided with a supernatant tank, the top of the supernatant tank is provided with a fixing frame, the fixing frame is fixedly connected with the side wall of the supernatant tank through a connecting plate, the center of the fixing frame is provided with a stirring mechanism, the stirring mechanism extends into the sedimentation tank, one side of the stirring mechanism is provided with a dosing mechanism, the dosing mechanism is arranged on the fixing frame, the inner side wall of the sedimentation tank is provided with a flow stopping mechanism, the side wall of the upper part of the sedimentation tank is provided with a wastewater inlet pipe, the side wall of the supernatant tank is provided with a supernatant outlet pipe, wastewater, the flow stopping mechanism stops the flow of the stirred wastewater, so that the wastewater after being added with the chemicals and stirred quickly enters a standing state to realize sedimentation, the settled sludge enters the middle through pipe through the gathering hopper, and finally the sludge is discharged and treated through the discharging mechanism.

Rabbling mechanism includes motor I, mount, connecting plate, (mixing) shaft, axle sleeve, stirring vane, and motor I sets up on the mount, and I axle head of motor is equipped with the (mixing) shaft, and the (mixing) shaft outside is equipped with the axle sleeve, and the axle sleeve passes through screw fixed connection in the mount bottom, is equipped with a plurality of stirring vane on the (mixing) shaft, and stirring vane passes through screw fixed connection on the (mixing) shaft, and motor I provides power, drives stirring vane through the (mixing) shaft and stirs the mixture to the waste water that.

Dosing mechanism includes dosing tank, baffle, connecting rod, connecting axle, rotary support seat, handle, the dosing tank sets up on the mount, and the dosing tank bottom is equipped with the baffle, connecting rod one end linking bridge, the connecting axle is connected to the connecting rod other end, the connecting axle outside is equipped with rotary support seat, rotary support seat overlap joint is on the mount, rotate for the mount free rotation through external force rotary support seat, the connecting axle top is equipped with the handle, place the flocculating agent in the dosing tank, through rotatory handle, make the baffle open for the dosing tank bottom, thereby release the flocculating agent and get into the sedimentation tank, rabbling mechanism is with flocculating agent stirring in waste water.

The flow stopping mechanism includes motor II, motor fixing base, driving gear I, driven gear I, a fixed base, the flow stopping pole, the flow stopping board, the motor fixing base sets up in the sedimentation tank lateral wall, II axle heads of motor are equipped with driving gear I, I meshing driven gear I of driving gear, I center of driven gear is equipped with the flow stopping pole, the flow stopping pole stretches into in the sedimentation tank, the flow stopping pole afterbody passes through fixing base swing joint at sedimentation tank box lateral wall, be equipped with the flow stopping board on the flow stopping pole, motor II provides power, through gear drive, when the flow stopping board swings to sedimentation tank circumference tangential direction is perpendicular, it is the biggest to block the area, the flow stopping board carries out the flow stopping to the rivers of rabbling mechanism stirring, make the waste water after adding the medicine stirring get into the state of stewing fast, realize fast settling, improve waste.

The discharging mechanism comprises a discharging plate, a discharging shaft, a motor III, a driving gear II, a driven gear II and a fixing sleeve, wherein a pair of fixing sleeves are arranged on the side wall of the middle through pipe, locking screws are arranged on the fixing sleeves, the discharging plate is arranged in the middle through pipe, a rubber layer is arranged outside the discharging plate, and the discharging plate is better attached to the inner side wall of the middle through pipe through the deformation of rubber, so that the sealing of sludge is realized, and the overflow of the sludge is prevented; a discharging shaft is arranged in the discharging plate, a hand wheel is arranged on the discharging shaft, manual discharging can be realized by the hand wheel, and the locking screw is used for locking the discharging shaft during manual discharging so as to prevent the discharging plate from automatically overturning due to uneven gravity of sludge during manual discharging; unloading axle passes the stripper and fixes a position through fixed cover, and the axle both ends of unloading are equipped with driven gear II, and III axle heads of motor are equipped with driving gear II, and II meshing driven gear II of driving gear, motor III provide power, through gear drive for the unloading axle drives the stripper upset, realizes unloading of sediment mud.

Preferably, the bottom of the discharging mechanism is provided with a material pressing mechanism, the material pressing mechanism comprises a top plate, side plates, a motor IV, a driving gear III, a driven gear III, a screw rod, a screw nut, a support, a power arm, a rotating shaft, an ejection support, enclosing plates, a guide groove, a water tank, a sewage outlet, a guide rail, a contact plate, a filter plate, a guide pillar, a spring and an extrusion block, the top plate is arranged at the edge of the bottom of a through pipe, the bottom of the top plate is provided with a pair of side plates, the inner sides of the side plates are provided with the pair of enclosing plates, the filter plate is arranged in the enclosing plates, one side of the filter plate is provided with the contact; the guide post penetrates through the contact plate, the filter plate and the surrounding plate, a spring is arranged outside the guide post on one side of the surrounding plate, an extrusion block is arranged on one side of the spring, and the extrusion block is used for prepressing and locking the spring at the tail part of the guide post; a pair of supports are arranged on the top plate, a screw rod is arranged between the supports, two ends of the screw rod are provided with screw threads in different directions, the center of the screw rod is provided with a driven gear III, the shaft end of a motor IV is provided with a driving gear III, the driving gear III is meshed with the driven gear III, the screw rod is provided with a screw nut which is fixedly connected with a power arm, one end of the power arm is connected with a rotating arm, the bending part of the rotating arm is provided with a rotating shaft, the rotating shaft is arranged on a lug of the top plate, the other end of the rotating arm is connected with an ejecting support, the ejecting support is movably connected with a wrapping plate through a pin shaft, the side wall of the wrapping plate is provided with a guide groove, a guide rail is arranged in the guide groove, the guide rail is arranged on the inner side wall, further rotating the rotating arm to eject the support to extrude the enclosing plate, so that the sludge is compressed; the motor IV rotates reversely, the lead screw is enabled to rotate through gear transmission, threads in different directions are arranged at two ends of the lead screw, lead screw nuts at two ends of the lead screw move in opposite directions simultaneously, the lead screw nuts are close to the lead screw nuts, the power arm is driven to withdraw, the further rotating arm rotates, the ejecting support drives the enclosing plate to open, and the forward rotation and the reverse rotation of the motor IV intermittent type enable the sludge to be extruded and shrunk continuously.

The utility model discloses a sludge drying device, including pressing material mechanism, curb plate, rotatory link plate, hydro-cylinder, link plate, hydro-cylinder, press material mechanism bottom is equipped with a pair of discharge mechanism, discharge mechanism includes the crossbeam, rotatory link plate, the pivot, the bottom plate, the hydro-cylinder, be equipped with the crossbeam on the curb plate, the crossbeam lower part is equipped with rotatory link plate, rotatory link plate is through pivot swing joint on the crossbeam, rotatory link plate bottom is equipped with the bottom plate, the hydro-cylinder afterbody sets up on the roof, the hydro-cylinder head sets up in the junction of rotatory link plate and bottom plate, the hydro-cylinder is ejecting, a pair of bottom butt joint among the discharge mechanism, cooperation pressing.

Preferably, the contact plate is stereoplasm polyester fiber filter pulp, and the filter filters the pulp for soft non-woven fabrics, and swager constructs and carries out abundant filtration through contact plate and filter to mud, carries out certain pre-compaction through the bounding wall at last for the water content of mud reduces, and further aspect mud carries out recovery processing.

Preferably, the upper part of the sedimentation tank is provided with a scraper mechanism, the scraper mechanism comprises a circular ring, a partition plate, a baffle plate, a motor V, a driving gear IV, a driven gear IV, a scraper and a positioning clamp, the bottom of the circular ring is provided with the partition plate, the circular ring is fixedly connected to the side wall of the sedimentation tank through the baffle plate, one side of the baffle plate is provided with the scraper, the other end of the scraper is fixedly connected to the bottom of the driven gear IV, the driven gear IV is arranged in a shaft sleeve clamping groove, the upper end face of the driven gear IV is lapped on a shaft sleeve and is positioned through a baffle block, the bottom of the driven gear IV is provided with the positioning clamp which is positioned through the positioning clamp, the driven gear IV freely rotates relative to the shaft sleeve, the motor V is arranged on a fixed frame, the shaft end of the motor V is provided with the driving gear IV, the driving gear, the floating objects can be conveniently recovered and treated.

Compared with the prior art, the invention has the beneficial effects that:

1) the wastewater is filled into the sedimentation tank through the wastewater inlet pipe, the wastewater is subjected to chemical adding treatment through the chemical adding mechanism, the chemical adding mechanism uniformly stirs the chemical adding to ensure that sludge or solid particles in the wastewater rapidly realize flocculation precipitation, the flow stopping mechanism stops the stirred wastewater to ensure that the wastewater after chemical adding and stirring rapidly enters a standing state to realize sedimentation, the settled sludge enters a middle through pipe through a gathering hopper and is finally discharged through the discharging mechanism, the standing precipitation and the settled sludge of the wastewater are treated synchronously, the pretreatment amount of the wastewater is large, and the treatment efficiency of the sludge is high;

2) a motor II in the flow stopping mechanism provides power, when the flow stopping plate swings to be vertical to the circumferential tangential direction of the sedimentation tank through gear transmission, the blocking area is the largest, and the flow stopping plate stops the flow of water stirred by the stirring mechanism, so that the wastewater after being added with chemicals and stirred quickly enters a standing state, the quick sedimentation is realized, and the wastewater treatment efficiency is improved;

3) a motor IV in the material pressing mechanism provides power, the motor IV rotates forwards, a lead screw rotates through gear transmission, threads in different directions are arranged at two ends of the lead screw, lead screw nuts at two ends of the lead screw move backwards at the same time, the lead screw nuts and the lead screw nuts are far away from each other, the lead screw nuts drive a power arm to be opened, a further rotating arm rotates, an ejection support extrudes a wrapping plate, and sludge compression is achieved; the motor IV rotates reversely, the lead screw is enabled to rotate through gear transmission, threads in different directions are arranged at two ends of the lead screw, lead screw nuts at two ends of the lead screw move in opposite directions simultaneously, the lead screw nuts are close to the lead screw nuts, the power arm is driven to withdraw, the further rotating arm rotates, the ejecting support drives the enclosing plate to open, and the forward rotation and the reverse rotation of the motor IV intermittent type enable the sludge to be extruded and shrunk continuously.

Drawings

FIG. 1 is a schematic view of a wastewater pretreatment apparatus according to the present invention;

FIG. 2 is a top view of a wastewater pretreatment apparatus of the present invention;

FIG. 3 is a sectional view of a wastewater pretreatment apparatus A-A of the present invention;

FIG. 4 is a schematic structural view of a scraper mechanism in the wastewater pretreatment device of the present invention;

FIG. 5 is a schematic view of a stop flow mechanism of a wastewater pretreatment device according to the present invention;

FIG. 6 is a schematic structural view of a material pressing mechanism in the wastewater pretreatment device of the present invention;

FIG. 7 is a schematic view of a discharging mechanism in the wastewater pretreatment device of the present invention;

in the figure: 11. a sedimentation tank; 12. a supernatant liquid pool; 13. a stirring mechanism; 14. a flow stopping mechanism; 15. a gathering hopper; 16. a middle through pipe; 17. a discharge mechanism; 18. a material pressing mechanism; 19. a discharging mechanism; 20. a dosing mechanism; 21. a scraping plate mechanism; 101. a wastewater inlet pipe; 102. a supernatant outlet pipe; 103. supporting legs; 201. a motor I; 202. a fixed mount; 203. a connecting plate; 204. a stirring shaft; 205. a shaft sleeve; 2051. a card slot; 2052. a stopper; 206. a stirring blade; 301. a dosing box; 302. a baffle plate; 303. a connecting rod; 304. a connecting shaft; 305. rotating the supporting seat; 306. a handle; 401. a motor II; 402. a motor fixing seat; 403. a driving gear I; 404. a driven gear I; 405. a fixed seat; 406. a flow stopping rod; 407. a flow stopping plate; 501. a stripper plate; 502. a discharge shaft; 503. a motor III; 504. a driving gear II; 505. a driven gear II; 506. a hand wheel; 507. fixing a sleeve; 508. locking the screw; 601. a top plate; 602. a side plate; 603. a motor IV; 604. a driving gear III; 605. a driven gear III; 606. a lead screw; 607. a lead screw nut; 608. a support; 609. a power arm; 610. a rotating arm; 611. a rotating shaft; 612. ejecting the bracket; 613. wrapping the plate; 6131. a guide groove; 614. a water tank; 615. a sewage outlet; 616. a guide rail; 617. a contact plate; 618. a filter plate; 619. a guide post; 620. a spring; 621. extruding the block; 701. a cross beam; 702. rotating the hanging plate; 703. a rotating shaft; 704. a base plate; 705. an oil cylinder; 801. a circular ring; 802. a partition plate; 803. a striker plate; 804. a motor V; 805. a driving gear IV; 806. a driven gear IV; 807. a squeegee; 808. and (6) positioning the clamp.

Detailed Description

For the convenience of understanding of those skilled in the art, the technical solution of the present invention will be further described in detail with reference to fig. 1 to 7.

A wastewater pretreatment device comprises a sedimentation tank 11, a supernatant tank 12, a stirring mechanism 13, a flow stopping mechanism 14, an aggregation hopper 15, a middle through pipe 16, a discharging mechanism 17 and a dosing mechanism 20; 11 bottom lateral walls of sedimentation tank are equipped with a plurality of supporting

legs

103, 11 bottom centers of sedimentation tank are equipped with the gathering and fight 15, gathering is fought 15 bottoms and is equipped with well siphunculus 16, be equipped with shedding mechanism 17 on

well siphunculus

16, 11 upper portion peripheries of sedimentation tank are equipped with

supernatant pond

12, 12 tops of supernatant pond are equipped with mount 202, mount 202 passes through connecting plate 203 fixed connection and is in 12 lateral walls of supernatant pond, mount 202 center is equipped with rabbling mechanism 13, rabbling mechanism 13 stretches into in the

sedimentation tank

11, 13 one side of rabbling mechanism is equipped with medicine mechanism 20, it sets up on mount 202 to add medicine mechanism 20, be equipped with flow stopping mechanism 14 on 11 inside walls of sedimentation tank, be equipped with waste water inlet tube 101 on 11 upper portion lateral walls of sedimentation tank.

Rabbling mechanism 13 includes motor I201, mount 202, connecting plate 203, the (mixing) shaft 204, axle sleeve 205, stirring vane 206, motor I201 sets up on mount 202, motor I201 axle head is equipped with (mixing) shaft 204, the (mixing) shaft 204 outside is equipped with axle sleeve 205, axle sleeve 205 passes through screw fixed connection in mount 202 bottom, be equipped with a plurality of stirring vane 206 on the (mixing) shaft 204, stirring vane 206 passes through screw fixed connection on (mixing) shaft 204, motor I201 provides power, it stirs the mixture to drive stirring vane 206 to the waste water that gets into sedimentation tank 11 through (mixing) shaft 204.

Medicine mechanism 20 includes dosing tank 301, baffle 302, connecting rod 303, connecting axle 304, rotation support seat 305, handle 306, dosing tank 301 sets up on mount 202, dosing tank 301 bottom is equipped with baffle 302, connecting rod 303 one end connection baffle 302, connecting axle 304 is connected to the connecting rod 303 other end, connecting axle 304 outside is equipped with rotation support seat 305, rotation support seat 305 overlap joint is on mount 202, rotate freely for the mount through external force rotation support seat, connecting axle 304 top is equipped with handle 306, place the flocculating agent in the dosing tank, through rotatory handle, make the baffle open for the dosing tank bottom, thereby release the flocculating agent and get into the sedimentation tank, rabbling mechanism is with the flocculating agent stirring in waste water.

The flow stopping mechanism 14 comprises a motor II 401, a motor fixing seat 402, a driving gear I403, a driven gear I404, a fixing seat 405, a flow stopping rod 406 and a flow stopping plate 407, the motor fixing seat 402 is arranged on the side wall of the sedimentation tank 11, the shaft end of the motor II 401 is provided with a driving gear I403, the driving gear I403 is meshed with a driven gear I404, the center of the driven gear I404 is provided with a flow stopping rod 406, the flow stopping rod 406 extends into the sedimentation tank 11, the tail part of the flow stopping rod 406 is movably connected with the side wall of the tank body of the sedimentation tank 11 through a fixed seat 405, the flow stopping plate 407 is arranged on the flow stopping rod 406, the motor II 401 provides power, through gear transmission, when the flow stopping plate 407 swings to be vertical to the circumferential tangential direction of the sedimentation tank, the blocking area is the largest, the flow stopping plate 407 stops the flow of the water stirred by the stirring mechanism 13, the wastewater after being added with the chemicals and stirred is enabled to rapidly enter a standing state, rapid sedimentation is realized, and the efficiency of wastewater treatment is improved.

The discharging mechanism 17 comprises a discharging plate 501, a discharging shaft 502, a motor III 503, a driving gear II 504, a driven gear II 505 and fixing sleeves 507, wherein a pair of fixing sleeves 507 are arranged on the side wall of the middle through pipe 16, locking screws 508 are arranged on the fixing sleeves 507, the discharging plate 501 is arranged in the middle through pipe 16, a rubber layer is arranged outside the discharging plate 501, and the discharging plate is better attached to the inner side wall of the middle through pipe through the deformation of rubber, so that the sealing of sludge is realized, and the overflow of the sludge is prevented; a discharging shaft 502 is arranged in the discharging plate 501, a hand wheel 506 is arranged on the discharging shaft 502, manual discharging can be achieved through the hand wheel 506, the locking screw is used for locking the discharging shaft during manual discharging, and the discharging plate is prevented from automatically overturning due to uneven sludge gravity during manual discharging; unloading axle 502 passes stripper 501 and fixes a position through fixed cover 507, and the axle 502 both ends of unloading are equipped with driven gear II 505, and motor III 503 axle head is equipped with driving gear II 504, and driving gear II 504 meshes driven gear II 505, and motor III 503 provides power, through gear drive for the unloading axle drives the stripper upset, realizes unloading of sediment mud.

The bottom of the discharging mechanism 17 is provided with a material pressing mechanism 18, the material pressing mechanism 18 comprises a top plate 601, a side plate 602, a motor IV 603, a driving gear III 604, a driven gear III 605, a lead screw 606, a lead screw nut 607, a support 608, a power arm 609, a rotating arm 610, a rotating shaft 611, an ejection support 612, an enclosure plate 613, a guide groove 6131, a water tank 614, a sewage outlet 615, a guide rail 616, a contact plate 617, a filter plate 618, a guide post 619, a spring 620 and an extrusion block 621, the top plate 601 is arranged at the bottom edge of the through pipe 16, the bottom of the top plate 601 is provided with a pair of side plates 602, the inner side of each side plate 602 is provided with a pair of enclosure plates 613, the enclosure plate 613 is internally provided with a filter plate 618, one side of each filter plate 618 is provided with a contact plate; the guide post 619 passes through the contact plate 617, the filter plate 618 and the surrounding plate 613, a spring 620 is arranged outside the guide post on one side of the surrounding plate 613, an extrusion block 621 is arranged on one side of the spring 620, and the extrusion block 621 performs pre-pressing on the spring 620 and locks the spring 620 at the tail of the guide post 619; a pair of supports 608 are arranged on the top plate 601, a screw 606 is arranged between the supports 608, threads in different directions are arranged at two ends of the screw 606, a driven gear III 605 is arranged at the center of the screw 606, a driving gear III 604 is arranged at the shaft end of a motor IV 603, the driving gear III 604 is meshed with the driven gear III 605, a screw nut 607 is arranged on the screw 606, the screw nut 607 is fixedly connected to a power arm 609, one end of the power arm 609 is connected with a rotating arm 610, a rotating shaft 611 is arranged at the bending position of the rotating arm 610, the rotating shaft 611 is arranged on a lug of the top plate, the other end of the rotating arm 610 is connected with an ejecting support 612, the ejecting support 612 is movably connected with a wrapping plate 613 through;

the bottom of the swaging mechanism 18 is provided with a pair of discharging mechanisms 19, each discharging mechanism 19 comprises a cross beam 701, a rotating hanging plate 702, a rotating shaft 703, a bottom plate 704 and an oil cylinder 705, the side plate 602 is provided with the cross beam 701, the lower portion of the cross beam 701 is provided with the rotating hanging plate 702, the rotating hanging plate 702 is movably connected to the cross beam 701 through the rotating shaft 703, the bottom of the rotating hanging plate 702 is provided with the bottom plate 704, the tail portion of the oil cylinder 705 is arranged on the top plate 601, and the head portion of the oil cylinder 705 is arranged at the.

Contact plate 617 filters the cotton for hard polyester fiber, and filter 618 filters the cotton for soft non-woven fabrics, and swager constructs and carries out abundant filtration to mud through contact plate and filter, carries out certain pre-compaction through the bounding wall at last for the water content of mud reduces, and further aspect mud carries out recovery processing.

The upper part of the sedimentation tank 11 is provided with a scraper mechanism 21, the scraper mechanism 21 comprises a circular ring 801, a partition plate 802, a baffle plate 803, a motor V804, a driving gear IV 805, a driven gear IV 806, a scraper 807 and a positioning hoop 808, the bottom of the circular ring 801 is provided with the partition plate 802, the circular ring 801 is fixedly connected with the side wall of the sedimentation tank 11 through the baffle plate 803, one side of the baffle plate 803 is provided with the scraper 807, the other end of the scraper 807 is fixedly connected with the bottom of the driven gear IV 806, the driven gear IV 806 is arranged in a shaft sleeve clamping groove 2051, the upper end face of the driven gear IV 806 is lapped with a shaft sleeve stopper 2052 and is positioned through the stopper 2052, the bottom of the driven gear IV 806 is provided with the positioning hoop 808 and is positioned through the positioning hoop 808, the driven gear IV 806 freely rotates relative to the shaft sleeve 205, the motor V804 is arranged on the fixing frame, the motor V804 provides power, and through gear drive, the floater of drive scraper blade liquid upper surface in to the sedimentation tank gathers, makes things convenient for the recovery processing of floater.

A wastewater pretreatment device comprises the following working processes: the wastewater is filled into the sedimentation tank through the wastewater inlet pipe, the wastewater is subjected to chemical adding treatment through the chemical adding mechanism, the chemical adding mechanism uniformly stirs the chemical adding to ensure that sludge or solid particles in the wastewater rapidly realize flocculation sedimentation, the flow stopping mechanism stops the stirred wastewater to ensure that the wastewater after chemical adding and stirring rapidly enters a standing state to realize sedimentation, the settled sludge enters a through pipe through the aggregation hopper, and finally the sludge is discharged through the discharging mechanism;

a motor IV in the material pressing mechanism provides power, the motor IV rotates forwards, a lead screw rotates through gear transmission, threads in different directions are arranged at two ends of the lead screw, lead screw nuts at two ends of the lead screw move backwards at the same time, the lead screw nuts and the lead screw nuts are far away from each other, the lead screw nuts drive a power arm to be opened, a further rotating arm rotates, an ejection support extrudes a wrapping plate, and sludge compression is achieved; the motor IV rotates reversely, the screw rod rotates through gear transmission, threads in different directions are arranged at two ends of the screw rod, screw rod nuts at two ends of the screw rod move oppositely at the same time, the distance between the screw rod nuts and the screw rod nuts is close, the screw rod nuts drive the power arm to withdraw, the further rotating arm rotates, the ejecting support drives the enclosing plate to open, and intermittent forward rotation and reverse rotation of the motor IV enable sludge to be extruded and shrunk continuously; the oil cylinder in the discharging mechanism is ejected out, a pair of bottoms in the discharging mechanism are butted, the sludge is pre-pressed and shrunk by matching with the material pressing mechanism, the oil cylinder is retracted, the bottom plate and the rotating hanging plate are driven to move relative to each other with the center of a circle of the rotating shaft, the bottom plate is separated and opened, and the sludge after shrinking is discharged.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.

Claims

1. A wastewater pretreatment device comprises a sedimentation tank, a supernatant liquid tank, a stirring mechanism, a flow stopping mechanism, a gathering hopper, a middle through pipe, a discharging mechanism and a dosing mechanism; the sedimentation tank bottom lateral wall is equipped with a plurality of supporting legs, its characterized in that sedimentation tank bottom center is equipped with the gathering fill, the gathering fill bottom is equipped with well siphunculus, be equipped with shedding mechanism on the well siphunculus, sedimentation tank upper portion periphery is equipped with the supernatant pond, the supernatant pond top is equipped with the mount, the mount passes through connecting plate fixed connection at the supernatant pond lateral wall, the mount center is equipped with rabbling mechanism, rabbling mechanism stretches into in the sedimentation tank, rabbling mechanism one side is equipped with adds medicine mechanism, it sets up on the mount to add medicine mechanism, be equipped with the flow stopping mechanism on the sedimentation tank inside wall, be equipped with the waste water inlet tube on the sedimentation tank upper portion lateral wall.

2. The wastewater pretreatment device according to claim 1, wherein the stirring mechanism comprises a motor I, a fixing frame, a connecting plate, a stirring shaft, a shaft sleeve and stirring blades, the motor I is arranged on the fixing frame, the shaft end of the motor I is provided with the stirring shaft, the shaft sleeve is arranged outside the stirring shaft, the shaft sleeve is fixedly connected to the bottom of the fixing frame through screws, the stirring shaft is provided with a plurality of stirring blades, and the stirring blades are fixedly connected to the stirring shaft through screws.

3. The wastewater pretreatment device according to claim 1, wherein the dosing mechanism comprises a dosing tank, a baffle plate, a connecting rod, a connecting shaft, a rotary support seat and a handle, the dosing tank is arranged on the fixed frame, the baffle plate is arranged at the bottom of the dosing tank, the baffle plate is connected to one end of the connecting rod, the connecting shaft is connected to the other end of the connecting rod, the rotary support seat is arranged outside the connecting shaft, the rotary support seat is overlapped on the fixed frame, and the handle is arranged at the top end of the connecting shaft.

4. The wastewater pretreatment device according to claim 1, wherein the flow stopping mechanism comprises a motor II, a motor fixing seat, a driving gear I, a driven gear I, a fixing seat, a flow stopping rod and a flow stopping plate, the motor fixing seat is arranged on the side wall of the sedimentation tank, the driving gear I is arranged at the shaft end of the motor II, the driving gear I is meshed with the driven gear I, the flow stopping rod is arranged in the center of the driven gear I and extends into the sedimentation tank, the tail part of the flow stopping rod is movably connected to the side wall of the box body of the sedimentation tank through the fixing seat, and the flow stopping plate is arranged on the flow stopping rod.

5. The wastewater pretreatment device of claim 1, wherein the discharge mechanism comprises a discharge plate, a discharge shaft, a motor III, a driving gear II, a driven gear II and a fixing sleeve, the side wall of the central tube is provided with a pair of fixing sleeves, the fixing sleeves are provided with locking screws, the discharge plate is arranged in the central tube, and the outer part of the discharge plate is provided with a rubber layer; a discharging shaft is arranged in the discharging plate, and a hand wheel is arranged on the discharging shaft; the unloading axle passes the stripper and fixes a position through fixed cover, and the axle both ends of unloading are equipped with driven gear II, and III axle heads of motor are equipped with driving gear II, and II meshing driven gear II of driving gear.

6. The wastewater pretreatment device according to claim 1, wherein a material pressing mechanism is arranged at the bottom of the discharging mechanism, the material pressing mechanism comprises a top plate, a side plate, a motor IV, a driving gear III, a driven gear III, a lead screw nut, a bracket, a power arm, a rotating shaft, an ejection bracket, a wrapping plate, a guide groove, a water tank, a sewage outlet, a guide rail, a contact plate, a filter plate, a guide pillar, a spring and an extrusion block, the top plate is arranged at the bottom edge of the through pipe, the bottom of the top plate is provided with a pair of side plates, the inner sides of the side plates are provided with a pair of wrapping plates, the filter plate is arranged in the wrapping plate, one side of the filter; the guide post penetrates through the contact plate, the filter plate and the surrounding plate, a spring is arranged outside the guide post on one side of the surrounding plate, an extrusion block is arranged on one side of the spring, and the extrusion block is used for prepressing and locking the spring at the tail part of the guide post; the top plate is provided with a pair of supports, a lead screw is arranged between the supports, two ends of the lead screw are provided with threads in different directions, the center of the lead screw is provided with a driven gear III, the shaft end of a motor IV is provided with a driving gear III, the driving gear III is meshed with the driven gear III, the lead screw is provided with a lead screw nut, the lead screw nut is fixedly connected to a power arm, one end of the power arm is connected with a rotating arm, the bent part of the rotating arm is provided with a rotating shaft, the rotating shaft is arranged on a lug of the top plate, the other end of the rotating arm is connected with an ejection;

the bottom of the material pressing mechanism is provided with a pair of discharging mechanisms, each discharging mechanism comprises a cross beam, a rotary hanging plate, a rotating shaft, a bottom plate and an oil cylinder, the cross beam is arranged on the side plate, the rotary hanging plate is arranged on the lower portion of the cross beam and is movably connected to the cross beam through the rotating shaft, the bottom plate is arranged at the bottom of the rotary hanging plate, the tail portion of the oil cylinder is arranged on the top plate, and the head portion of the oil cylinder is arranged at the connecting.

7. The apparatus of claim 1, wherein the contact plate is made of hard polyester fiber filter cotton, and the filter plate is made of soft non-woven filter cotton.

8. The wastewater pretreatment device of claim 1, characterized in that a scraper mechanism is arranged on the upper portion of the sedimentation tank, the scraper mechanism comprises a circular ring, a partition plate, a baffle plate, a motor V, a driving gear IV, a driven gear IV, a scraper and a positioning clamp, the bottom of the circular ring is provided with the partition plate, the circular ring is fixedly connected to the side wall of the sedimentation tank through the baffle plate, one side of the baffle plate is provided with the scraper, the other end of the scraper is fixedly connected to the bottom of the driven gear IV, the driven gear IV is arranged in a shaft sleeve clamping groove, a stop block is arranged on the upper end face of the driven gear IV in a lap joint manner, the bottom of the driven gear IV is provided with the positioning clamp, the motor V is arranged on a fixed frame.