CN214496077U - Vacuum pumping filter pressing and electroosmosis combined dehydrator - Google Patents

Abstract

The utility model relates to an evacuation filter-pressing and electroosmosis combination formula hydroextractor, it includes evacuation dewatering device and electroosmosis dewatering device, and evacuation dewatering device is including the last dolly and the lower dolly that form the mud pressing passageway, and electroosmosis dewatering device is linked together the discharge end of mud pressing passageway and electroosmosis dewatering device's mud extrusion passageway's feed end through mud intercommunication passageway, and the discharge end of mud pressing passageway is located the top of mud extrusion passageway feed end. The utility model discloses an aspect sludge carries out the filter-pressing treatment through the cooperation of filter-pressing and evacuation before getting into electroosmosis's extrusion passageway, combines the further filter-pressing of electroosmosis again to make the solid content of discharge sludge 35~ 45%; on the other hand, the vacuumizing does not cause extrusion power loss, the vacuumizing difficulty is small, and meanwhile, the required power is small and the cost is reduced under the gradual filter pressing of a mud pressing channel formed by the upper trolley and the lower trolley.

Description

Vacuum pumping filter pressing and electroosmosis combined dehydrator

Technical Field

The utility model belongs to the sludge treatment equipment field, concretely relates to evacuation filter-pressing and electroosmosis combination formula hydroextractor.

Background

With the development of socioeconomic and the acceleration of urbanization, the amount of sludge produced in urban sewage treatment plants and the accompanying facilities is rapidly increasing. According to related materials, 3 hundred million tons of sludge are generated in a sewage treatment plant in China in 2010. Because the sludge needs to be subjected to biochemical treatment and flocculation treatment during dehydration, and the dehydrated sludge contains a large amount of cellular water and attached water, at present, the water content of the sludge can only be reduced to about 80% by the existing equipment and technology of almost all sewage treatment plants, and if the requirement of incineration is met, the cost is high when the water content of the sludge is lower than 50%, so that almost all sewage treatment plants in China can only mainly bury and stack the sludge, thereby causing serious environmental pollution.

In the field, the sludge treatment apparatus generally includes a sludge concentration device and a dewatering machine which are independently arranged, when sludge treatment is performed, the sludge concentration device is firstly used for concentrating relatively thin sludge, and the sludge with reduced water content after concentration enters the dewatering machine for dewatering.

If patent number ZL201921321313.1 filed by the applicant on 14/08/2019, the patent name is a vertical sludge dewatering device (dehydrator), which comprises a frame, a squeezing roller and a driving mechanism, wherein a squeezing area is formed between the squeezing roller and a sludge outlet of the sludge concentrating device, the squeezing area is provided with a sludge outlet, the vertical sludge dewatering device further comprises a re-squeezing unit for re-squeezing sludge discharged from the sludge outlet of the squeezing area, the re-squeezing unit comprises a squeezing plate which is close to the outer wall of the squeezing roller and forms an arc-shaped squeezing channel with the outer wall of the squeezing roller, and a bin plate which is arranged on the frame and forms a closed bin with the squeezing plate, wherein the squeezing plate is a plate with water filtering meshes, and the vertical sludge dewatering device further comprises a vacuum pumping mechanism for forming vacuum in the closed bin.

Although the above-mentioned vertical sludge dewatering device can dewater sludge under the synergistic effect of squeezing and vacuum-pumping, and achieve the expected technical effect, the applicant further finds that the following disadvantages exist for the squeezing roller in use:

1) the length of the extrusion area is limited, so that the extrusion force required to be provided is large, and the requirement on equipment is high;

2) the water goes out water from the extrusion face both sides at extrusion in-process, especially after the stripper plate extrusion, water can flow in closed storehouse, then is taken out by evacuation mechanism, so, because closed storehouse needs along with squeeze roll synchronous motion, consequently, can have power loss, the degree of difficulty of evacuation is also big moreover, causes the cost higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an improved evacuation filter-pressing and electroosmosis combined type hydroextractor.

For solving the technical problem, the utility model discloses take following technical scheme:

a vacuum pumping, pressure filtration and electroosmosis combined dehydrator comprises a vacuum pumping dehydration device and an electroosmosis dehydration device, wherein the vacuum pumping dehydration device comprises an upper trolley and a lower trolley which form a mud pressing channel, the upper trolley comprises an upper frame, a transmission roller, an annular filter cloth belt, a filter water cavity and a vacuum pumping mechanism, the transmission roller is correspondingly arranged at two ends of the upper frame, the annular filter cloth belt is sleeved on the transmission roller, the filter water cavity is formed by a filter screen plate and is positioned in the annular filter cloth belt, the filter screen plate props up the lower layer of the annular filter cloth belt from the inner side of the lower layer of the annular filter cloth belt, the bottom of the filter screen plate is flush with the bottoms of the transmission rollers at two ends, and the vacuum pumping mechanism is communicated with the filter water cavity; the lower trolley comprises a lower frame, an annular transmission chain and a plurality of mud pressing components, the mud pressing components are distributed around the annular transmission chain in the circumferential direction, the mud pressing components on the upper layer and the lower layer of the annular transmission chain are mutually abutted and are spliced in a flush mode to form an upper lane and a lower lane with upward and downward openings, and water filtering holes are formed in the upper lane and the lower lane respectively; the lower layer of the annular filter cloth belt closes the opening of the upper lane corresponding to the lower part and forms a mud pressing channel with the upper lane, and the height of the mud pressing channel is gradually narrowed from the feeding end part to the discharging end part;

the electroosmosis dehydration device is communicated with the discharge end of the mud pressing channel and the feed end of the mud extrusion channel of the electroosmosis dehydration device through the mud communication channel, and the discharge end part of the mud pressing channel is positioned above the feed end of the mud extrusion channel.

Preferably, the two end parts of the upper frame can be respectively and independently arranged in a vertically adjustable manner relative to the lower frame, and the two end parts of the upper frame are respectively provided with a mud inlet measuring scale and a mud outlet measuring scale which are used for measuring the thickness of the mud pressing channel. The control of the mud inlet and outlet amount is realized by adjusting the height of the inlet and outlet end parts, so that the expected dehydration rate is achieved.

According to the utility model discloses a concrete implementation and preferred aspect, the water filtering mesh board includes that lower floor's straight line along annular filter cloth area extends and laminate comprehensively at the first water filtering plate body of annular filter cloth area lower floor's medial surface, is located first water filtering plate body top and the inside second water filtering plate body that is formed with the cavity, wherein evacuation mechanism and cavity intercommunication, the during operation, the cavity is negative pressure state, and water after the filter-pressing gets into the cavity from first water filtering plate body. On one hand, the strength of the water filtering mesh plate is ensured, and extrusion deformation is avoided; on the other hand, the water seeping into the cavity after filter pressing is convenient to collect.

Preferably, be equipped with in the cavity and separate the chamber backup pad, a plurality of minute chambeies are linked together, and the water strainer mesh board still is including setting up the third water strainer plate body between first water strainer plate body and the second water strainer plate body, and wherein the water straining rate of third water strainer plate body is greater than the water straining rate of first water strainer plate body. On the premise of not influencing the pumping of the filtered water, the strength of the water filtering mesh plate is further enhanced so as to improve the sludge dewatering effect.

Further, the second water filter plate body comprises a top plate arranged in parallel with the first water filter plate body, waist plates extending downwards from two end parts of the top plate and having trapezoidal sections, wherein the lower end parts of the waist plates are fixed on the third water filter plate body. Thus, the strength of the roller is enhanced, and the installation of the conveying roller is facilitated.

Specifically, the cross section of the cavity formed by the top plate, the waist plate and the third water filtering plate body is an isosceles trapezoid, the water filtering mesh plate further comprises extension joints formed at two ends of the bottom edge of the isosceles trapezoid, arc faces matched with the corresponding end part transmission rollers are formed on the extension joints, and the bottom surfaces of the extension joints are flush with the bottom surface of the first water filtering plate body and are supported on the inner side of the lower layer of the annular filter cloth belt. Therefore, the water filtering mesh plates are butted through the extending joints at two ends and are connected between the bottoms of the transmission rollers at the two ends so as to ensure the flatness of the lower layer of the annular filter cloth belt.

According to the utility model discloses a still another concrete implementation and preferred aspect, evacuation mechanism is including setting up at the evacuation chamber at water strainer mesh plate top, the air suction pipeline that is used for being linked together one side at evacuation chamber top and drainage chamber, with one side of evacuation chamber bottom and collect the gas outlet pipeline that the water tank communicates mutually and negative pressure power supply, wherein under the negative pressure that negative pressure power supply provided, with gas and water suction collection water tank, and water and gas autosegregation under the dead weight. That is to say, there is no interference between the vacuum pumping and the extrusion force required by the sludge, so the vacuum pumping will not cause the extrusion power loss, and the vacuum pumping is very convenient.

Preferably, the vacuumizing cavity extends along the width direction of the annular filter cloth belt, the vacuumizing cavity is arranged close to the discharge end part of the annular filter cloth belt, the plurality of air suction pipelines are arranged, and the water filtering cavities, where the annular filter cloth belt is close to the discharge end part, are communicated with the vacuumizing cavity respectively.

Meanwhile, in order to ensure the strength, in the present example, a reinforcing member and a positioning member having the same shape as the vacuum pumping chamber are provided at the feed end of the water strainer plate.

According to the utility model discloses a still another concrete implementation and preferred aspect, the upper strata and the lower floor parallel arrangement of annular filter cloth area, transmission roller include main transmission roller and auxiliary transmission roller, and wherein main transmission roller is located the ejection of compact tip of annular filter cloth area, and auxiliary transmission roller has two and the upper and lower feeding tip that distributes at annular filter cloth area. Under the overall arrangement of three transmission rollers, make things convenient for annular to strain the installation of strap and tensioning to adjust, by the great main transmission roller transmission of external diameter again, more be favorable to the motion of annular to strain the strap. In this case, the endless filter cloth belt and the endless conveyor chain rotate in opposite directions and convey the sludge from the feed end to the discharge end.

Preferably, the centers of the two auxiliary conveying rollers are aligned up and down, and the outer diameter of the auxiliary conveying roller positioned below is larger than that of the auxiliary conveying roller positioned above. Firstly, the auxiliary transmission roller positioned below bears large pressure; secondly, the filter cloth band section of the formed end part is obliquely arranged, so that an avoiding space is formed at the feeding end part, and further, sludge is conveniently fed into the sludge pressing channel.

In addition, the upper trolley also comprises a cleaning mechanism which is positioned at the upper part of the upper frame and can clean the inner surface and the outer surface of the upper layer of the annular filter cloth belt, a mechanism for preventing the filter cloth belt from deviating and a vibrating mechanism which is arranged on the filter mesh plate, wherein the mechanism is arranged at the two opposite sides of the upper frame.

Specifically, clean mechanism is including being located the below on annular filter cloth area upper strata and can be to the mud scraping plate subassembly that mud scraped off on the medial surface of the annular filter cloth area that passes through and the subassembly that erodees that sets up in the top on annular filter cloth area upper strata.

Further, the mud scraper component comprises a mud groove and a scraper arranged in the mud groove, wherein the scraper comprises a cutter holder and a cutter head movably and adjustably arranged on the cutter holder.

In the embodiment, the cutter head is in acute-angle contact with the inner wall of the upper layer of the annular filter cloth belt, so that mud or water possibly adhered to the inner wall of the upper layer of the annular filter cloth belt is removed, the water filtering performance of the annular filter cloth belt is ensured, and the sludge dewatering can be realized to the maximum extent.

As for the subassembly that erodees, it mainly includes towards the water cavity, can carry out the shower nozzle that erodees to upper annular filter cloth area surface and will erode the water drainage pipeline of water and mud discharge.

Meanwhile, the cleaning process in this example is: firstly, surface scouring is carried out, and then the inner side surface of the annular filter cloth belt is scraped. This improves the drainage performance of the endless filter cloth belt.

In this example, the filter cloth belt deviation preventing mechanisms are correspondingly arranged at two ends of each transmission roller, each filter cloth belt deviation preventing mechanism comprises a connecting seat connected to an upper frame on the corresponding side and a deviation rectifying roller arranged on the connecting seat, wherein a wheel groove matched with the filter cloth belt is formed on the deviation rectifying roller.

Specifically, be located the supplementary transmission roller both sides in below and prevent straining strap off tracking mechanism, its connecting seat can swing or linear motion to satisfy the restriction of straining the strap of rectifying of different angles.

In this example, the vibrating mechanism is a conventional vibrator, and has two vibrators, wherein the two vibrators are distributed on a frame plate at intervals, and the frame plate is fixed on the top plate.

In this example, the lower trolley further comprises an annular track frame arranged on the lower trolley frame, frame wheels arranged at two ends of each mud pressing component, an inner support frame arranged inside the annular transmission chain, a guide rail arranged on the inner support frame, and a matching piece matched with the guide rail and fixed on each mud pressing component, wherein the frame wheels are arranged on the annular track frame in a rolling manner, the guide rail extends along the length direction of the annular transmission chain, and the matching pieces are arranged on the guide rail in a sliding or rolling manner. Therefore, the stability of the movement of the mud pressing component is improved under the corresponding limiting and supporting of the track and the guide rail.

Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:

the utility model discloses an aspect sludge carries out the filter-pressing treatment through the cooperation of filter-pressing and evacuation before getting into electroosmosis's extrusion passageway, combines the further filter-pressing of electroosmosis again to make the solid content of discharge sludge 35~ 45%; on the other hand, the vacuumizing does not cause extrusion power loss, the vacuumizing difficulty is small, and meanwhile, the required power is small and the cost is reduced under the gradual filter pressing of a mud pressing channel formed by the upper trolley and the lower trolley.

Drawings

The invention will be described in further detail with reference to the following figures and specific embodiments:

FIG. 1 is a schematic view of the vacuum-pumping filter-pressing and electroosmosis combined dehydrator of the present invention;

FIG. 2 is a schematic front view of the vacuum dewatering device shown in FIG. 1;

FIG. 3 is a schematic front view of the upper cart in FIG. 2;

FIG. 4 is a schematic sectional view taken along line A-A in FIG. 3;

FIG. 5 is a schematic sectional view taken along line B-B in FIG. 4;

FIG. 6 is a schematic sectional view taken along line C-C in FIG. 4;

FIG. 7 is a schematic front view of the lower cart of FIG. 1;

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a schematic sectional view taken along line D-D in FIG. 8;

FIG. 10 is a schematic cross-sectional view taken along line E-E of FIG. 7;

wherein: firstly, a vacuum pumping dehydration device; s1, mounting a trolley; s10, getting on the frame; s11, transfer roller; z, a main transport roller; f. an auxiliary transport roller; s12, annular filter cloth belt; s13, water filtering cavity; b. a water filtering mesh plate; b1, a first water filter plate body; b2, a second water filter plate body; b20, top plate; b21, waist panel; b3, a third water filter plate body; b4, cell supporting plate; b5, an extension joint; s14, a vacuum pumping mechanism; q1, vacuumizing the cavity; q2, an air suction pipeline; q3 and an air outlet pipeline; s15, cleaning mechanism; g. a mud scraping plate assembly; g1, mud groove; g2, a scraper; g20, a tool apron; g21, a cutter head; c. a flushing component; c3, flushing cavity; s4, spray head; c5, a drain line; J. a reinforcing member; D. a positioning member; s16, a mechanism for preventing the filter cloth belt from deviating; p1, connecting seat; p2, deviation rectifying roller; p20, race; s17, a vibration mechanism; z1, a vibrator; s18, flange holes; j. a frame plate; s2, discharging the trolley; s20, get-off rack; s21, endless transmission chain; s210, a chain body; s211, a sprocket; s22, mud pressing component; s23, circular track frame; s230, track groove; s24, carriage wheels; s25, inner supporting frame; s26, middle rail; s260, a rail seat; s261, linear side rails; s262, supporting the rail; s27, mating parts; s270, guiding rollers; s271, supporting rollers; t, pressing a mud channel; c1, mud feeding measurement scale; c2, a mud discharge measuring scale;

② an electroosmosis dehydration device; 3. a feed hopper; 4. a mud discharging mechanism; s, extruding a sludge channel;

l, a sludge communicating channel.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, the vacuum-pumping, pressure-filtering and electro-osmosis combined dehydrator according to the present embodiment includes a vacuum-pumping dehydration device (i) and an electro-osmosis dehydration device (ii).

Specifically, the vacuum dehydration device includes an upper cart S1 and a lower cart S2.

Referring to fig. 2, the upper cart S1 includes an upper carriage S10, a transfer roller S11, an endless filter cloth belt S12, a water filtering chamber S13, and a vacuum mechanism S14, wherein the vacuum mechanism S14 is in communication with the water filtering chamber S13.

The lower trolley S2 comprises a lower frame S20, an annular transmission chain S21 and mud pressing parts S22, wherein the mud pressing parts S22 are multiple and are distributed circumferentially around the annular transmission chain S21, the mud pressing parts S22 on the upper layer and the lower layer of the annular transmission chain S21 are mutually butted and levelly spliced to form an upper lane and a lower lane with upward and downward openings, and water filtering holes are formed in the upper lane and the lower lane respectively.

The lower layer of the annular filter cloth belt s12 closes the opening of the corresponding upper lane below and forms a mud pressing channel t with the upper lane.

In this case, the height of the sludge pressing passage t becomes gradually narrower from the feed end portion toward the discharge end portion.

In this case, the endless filter cloth belt s12 and the endless conveyor chain s21 rotate in opposite directions and convey the sludge from the feed end to the discharge end.

Referring to fig. 3, transfer rollers s11 are provided at both ends of the upper frame s10, respectively, and an endless filter cloth belt cover s12 is provided on the transfer rollers s 11.

In this example, the upper and lower layers of the endless filter cloth belt s12 are arranged in parallel, and the transfer roller s11 includes a main transfer roller z located at the discharge end of the endless filter cloth belt s12 and auxiliary transfer rollers f having two feed ends distributed up and down on the endless filter cloth belt s 12. Under the overall arrangement of three transmission rollers s11, make things convenient for annular filter cloth area s12 to install and tensioning to adjust, again by the great main transmission roller z transmission of external diameter, more be favorable to the motion of annular filter cloth area s 12.

The centers of the two auxiliary transmission rollers f are vertically aligned, and the outer diameter of the auxiliary transmission roller f positioned below is larger than that of the auxiliary transmission roller f positioned above. Firstly, the auxiliary conveying roller f positioned below bears large pressure; secondly, the filter cloth band section of the formed end part is obliquely arranged, so that an avoiding space is formed at the feeding end part, and further, sludge is conveniently fed into the sludge pressing channel t.

As shown in fig. 4 and 5, the water filtering cavity s13 is composed of a water filtering mesh plate b and is located in the annular water filtering cloth belt s12, the water filtering mesh plate b props the lower layer of the annular water filtering cloth belt s12 from the inner side of the lower layer of the annular water filtering cloth belt s12, the bottom of the water filtering mesh plate b is flush with the bottoms of the two-end transmission rollers s11, and the vacuumizing mechanism is communicated with the water filtering cavity.

Specifically, water filtering mesh board b includes that the lower floor straight line along annular filter cloth area s12 extends and the first water filtering plate body b1 of laminating at annular filter cloth area s12 lower floor medial surface comprehensively, be located first water filtering plate body b1 top and inside second water filtering plate body b2 that is formed with the cavity, and set up third water filtering plate body b3 between first water filtering plate body b1 and second water filtering plate body b2, wherein evacuation mechanism s14 and cavity intercommunication, in operation, the cavity is the negative pressure state, water after the filter-pressing gets into the cavity from first water filtering plate body. On one hand, the strength of the water filtering mesh plate is ensured, and extrusion deformation is avoided; on the other hand, the water seeping into the cavity after filter pressing is convenient to collect.

A partition supporting plate b4 is arranged in the cavity, the multiple sub-cavities are communicated, and the water filtration rate of the third water filter plate body b3 is greater than that of the first water filter plate body b 1. On the premise of not influencing the pumping of the filtered water, the strength of the water filtering mesh plate is further enhanced so as to improve the sludge dewatering effect.

In this example, the second water filter plate body b2 includes a top plate b20 parallel to the first water filter plate body b1, and a waist plate b21 extending downward from both ends of the top plate b20 and having a trapezoidal cross section, wherein a lower end of the waist plate b21 is fixed to the third water filter plate body b 3. Thus, the strength of the roller is enhanced, and the installation of the conveying roller is facilitated.

Specifically, the cross section of a cavity formed by the top plate b20, the waist plate b21 and the third water filtering plate body b3 is an isosceles trapezoid, the water filtering mesh plate b further comprises extension joints b5 formed at two ends of the bottom side of the isosceles trapezoid, arc-shaped surfaces matched with the corresponding end transmission rollers s11 are formed on the extension joints b5, and the bottom surfaces of the extension joints b5 are flush with the bottom surface of the first water filtering plate body b1 and are supported on the inner side of the lower layer of the annular water filtering cloth belt s 12. Therefore, the water filtering mesh plates are butted through the extending joints at two ends and are connected between the bottoms of the transmission rollers at the two ends so as to ensure the flatness of the lower layer of the annular filter cloth belt.

Two ends of the upper frame s10 can be independently arranged and movably adjusted up and down relative to the lower frame s20, and two ends of the upper frame s10 are respectively provided with a mud inlet measuring scale c1 and a mud outlet measuring scale c2 which are used for measuring the thickness of the mud pressing channel t. The control of the mud inlet and outlet amount is realized by adjusting the height of the inlet and outlet end parts, so that the expected dehydration rate is achieved.

The vacuumizing mechanism s14 comprises a vacuumizing cavity q1 arranged at the top of the water filtering mesh plate b, a suction pipeline q2 used for communicating one side of the top of the vacuumizing cavity q1 with the water filtering cavity, an air outlet pipeline q3 used for communicating one side of the bottom of the vacuumizing cavity q1 with the water collecting tank, and a negative pressure power source, wherein under the negative pressure provided by the negative pressure power source, air and water are sucked into the water collecting tank, and the water and the air are automatically separated under the self weight. That is to say, there is no interference between the vacuum pumping and the extrusion force required by the sludge, so the vacuum pumping will not cause the extrusion power loss, and the vacuum pumping is very convenient.

In this example, the vacuum pumping chamber q1 extends along the width direction of the annular filter cloth belt s12, the vacuum pumping chamber q1 is arranged near the discharge end of the annular filter cloth belt s12, the number of the suction pipes q2 is multiple, and the water filtering chambers where the annular filter cloth belt s12 is near the discharge end are respectively communicated with the vacuum pumping chamber q 1.

As shown in fig. 6, in order to secure strength, in this example, a reinforcing member J and a positioning member D having the same shape as the vacuum pumping chamber q1 are provided at the feed end of the water filter mesh plate b.

Under the premise of meeting the requirements, the upper trolley S1 in the embodiment further comprises a cleaning mechanism S15 which is positioned at the upper part of the upper frame S10 and can clean the inner surface and the outer surface of the upper layer of the annular filter cloth belt S12 by sludge, filter cloth belt deviation preventing mechanisms S16 which are arranged at two opposite sides of the upper frame S10, and a vibrating mechanism S17 which is arranged on the filter mesh plate b.

The cleaning mechanism s15 comprises a mud scraper component g which is positioned below the upper layer of the annular filter cloth belt s12 and can scrape off the mud on the inner side surface of the passing annular filter cloth belt s12, and a scouring component c which is arranged above the upper layer of the annular filter cloth belt s 12.

The mud scraper assembly g comprises a mud groove g1, a scraper g2 arranged in the mud groove g1, wherein the scraper g2 comprises a cutter seat g20 and a cutter head g21 movably and adjustably arranged on the cutter seat g 20.

In this example, the cutter head g21 contacts the inner wall of the upper layer of the annular filter cloth strip s12 at an acute angle, so that mud or water possibly adhered to the inner wall of the upper layer of the annular filter cloth strip s12 is removed to ensure the water filtering performance of the annular filter cloth strip s12, and thus the sludge dewatering can be realized to the maximum extent.

As for the scouring assembly c, it mainly comprises a scouring chamber c3, a spray head c4 capable of scouring the surface of the upper layer annular filter cloth belt s12, and a drain pipe c5 for draining scoured water and mud.

Meanwhile, the cleaning process in this example is: firstly, surface scouring is carried out, and then the inner side surface of the annular filter cloth belt is scraped. This improves the drainage performance of the endless filter cloth belt.

In this example, the filter cloth belt deviation preventing mechanisms s16 are correspondingly arranged at two ends of each transmission roller s11, each filter cloth belt deviation preventing mechanism s16 comprises a connecting seat p1 connected to the corresponding upper frame s10 and a deviation correcting roller p2 arranged on the connecting seat p1, wherein a wheel groove p20 matched with the filter cloth belt s12 is formed on the deviation correcting roller p 2.

Specifically, the filter cloth belt deviation preventing mechanism s16 located on two sides of the lower auxiliary conveying roller f has a connecting seat p1 capable of swinging or moving linearly so as to meet the correction limitation of the filter cloth belt at different angles.

In this example, the vibrating mechanism s17 is a conventional vibrator z1, and there are two vibrators z1 spaced apart on a frame plate j fixed to the top plate b 20.

Meanwhile, the upper frame s10 is provided with a flange hole s18 for mounting and dismounting.

As shown in fig. 7 and 8 in conjunction, the endless conveyor chain s21 includes a chain body s210 and sprockets s211 at both ends, and a mud pressing member s22 is provided for each link.

As shown in fig. 9 and 10, the lower cart S2 further includes an annular rail frame S23 provided on the lower frame S20, and frame wheels S24 provided at both ends of each mud pressing member S22.

In this example, both end portions of each link connecting shaft are formed with carriage wheels s24, wherein the carriage wheels s24 roll on the endless rail frame s23 to realize rotation of the endless conveyor chain s 21.

Specifically, a rail groove s230 is formed in the circular rail holder s23, and the holder wheel s24 penetrates the rail groove s230 and rolls on the rail groove s 230.

Meanwhile, an inner support frame s25 is further arranged inside the annular transmission chain s21, a middle guide rail s26 is further arranged in the middle of the top of the inner support frame s25, and a fitting piece s27 matched with the middle guide rail s26 is correspondingly arranged on the inner side of each mud pressing part s 22.

In this example, the middle guide rail s26 includes a rail seat s260 fixed on the inner bracket s25, a linear side rail s261 arranged on the rail seat s260, and a top support rail s262, the fitting piece s27 is correspondingly arranged on the inner side of each mud pressing component s22, and includes a guide roller s270 correspondingly arranged in the linear side rail s261, and a support roller s271 freely rolling and supported on the top support rail s262, wherein the guide roller s270 and the support roller s271 are matched, so that the middle part of the formed upper channel forms a stable support, thereby facilitating the extrusion of the mud.

Specifically, go up the lane and be the level setting, so, the annular filter cloth area s12 that the top corresponds forms the angle with the surface on last lane, and wherein the distance that the surface on the upper lane of left end portion was greater than the distance that the surface on the upper lane of right-hand member portion was big, consequently, the drainage chamber that goes up the dolly and form also inclines to set up, and the water of filter-pressing of being convenient for like this flows to the right-hand member, reduces the degree of difficulty of evacuation.

The electro-osmotic dehydration device has the same structure as that of the high-efficiency electro-osmotic sludge dehydrator disclosed in ZL201710095903.6, and the structure is not described in detail and can be clearly implemented.

Meanwhile, in the embodiment, the electroosmosis dehydration device connects the discharge end of the mud pressing channel t with the feed end of the mud extrusion channel s of the electroosmosis dehydration device through the mud communication channel L, and the discharge end of the mud pressing channel t is positioned above the feed end of the mud extrusion channel s.

Specifically, be equipped with feeder hopper 3 at the feed end of mud extrusion passageway s, mud intercommunication passageway L is linked together the discharge end of mud pressing passageway t and the left side of 3 bottoms of feeder hopper, still is equipped with out mud mechanism 4 in the mud outlet department of feeder hopper 3 simultaneously.

In this example, the structural principle of the sludge discharging mechanism 4 is the same as that of the sludge concentrating device in ZL201921320400.5, and will not be described again.

In summary, the implementation process of the present embodiment is as follows:

sludge enters a sludge channel t formed by an upper trolley and a lower trolley from the left end part, the sludge is conveyed rightwards in a gradually narrowed sludge pressing channel t by rotating an annular filter cloth belt s12 and an annular transmission chain s21 in opposite directions, the sludge is extruded and conveyed at the same time, water filtered out from the upper layer of the sludge channel t enters a water filtering cavity, water and air are discharged out of the upper trolley under the vacuum negative pressure, the filtered water at the lower layer of the sludge channel t is directly discharged from a water filtering mesh formed on the upper channel, so that the upper layer of the sludge is subjected to negative pressure suction filtration, the lower layer of the sludge is subjected to self-filtration to realize the water sludge, the sludge solid content of the sludge is 20-35%, then the discharged sludge enters a feed hopper 3 through a sludge communication channel L, the sludge enters a sludge extruding channel s under the guiding and limiting of a sludge discharging mechanism 4, and then the sludge is further dewatered by electroosmosis and filter pressing, and the sludge solid content of the sludge is 35-45%.

Therefore, adopt the last dolly of this application and form the mud pressing passageway with lower dolly, carry out evacuation formula filter-pressing to mud earlier, nevertheless carry out the electroosmosis formula filter-pressing again to can obtain good dehydration effect. Simultaneously, the required power of evacuation formula filter-pressing and the degree of difficulty is implemented in evacuation in this application, and obviously less than ZL201921321313.1 vertical sludge dewatering device's filter-pressing power, the degree of difficulty is implemented in the evacuation, and mutual noninterference between evacuation and the filter-pressing moreover, the power loss when the water of suction filtration also can not cause the filter-pressing.

The present invention has been described in detail, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the protection scope of the present invention should not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides an evacuation filter-pressing and electroosmosis combination formula hydroextractor, its characterized in that includes evacuation dewatering device and electroosmosis dewatering device:

the vacuum pumping dehydration device comprises an upper trolley and a lower trolley which form a mud pressing channel, the upper trolley comprises an upper frame, transmission rollers, annular filter cloth belts, a water filtering cavity and a vacuum pumping mechanism, wherein the transmission rollers are correspondingly arranged at two ends of the upper frame, the annular filter cloth belts are sleeved on the transmission rollers, the water filtering cavity is composed of water filtering mesh plates and is positioned in the annular filter cloth belts, the water filtering mesh plates support the lower layers of the annular filter cloth belts from the inner sides of the lower layers of the annular filter cloth belts, the bottoms of the water filtering mesh plates are flush with the bottoms of the transmission rollers at two ends, and the vacuum pumping mechanism is communicated with the water filtering cavity; the lower trolley comprises a lower frame, an annular transmission chain and mud pressing components, wherein the mud pressing components are distributed circumferentially around the annular transmission chain, a plurality of mud pressing components positioned on the upper layer and the lower layer of the annular transmission chain are mutually butted and are spliced in a flush mode to form an upper lane and a lower lane with upward and downward openings, and water filtering holes are formed in the upper lane and the lower lane respectively; the lower layer of the annular filter cloth belt closes the opening of the upper lane corresponding to the lower part of the annular filter cloth belt and forms a mud pressing channel with the upper lane, and the height of the mud pressing channel is gradually narrowed from the feeding end part to the discharging end part;

the electroosmosis dehydration device through mud intercommunication passageway with the discharge end of pressing the mud passageway with the feed end of electroosmosis dehydration device's mud extrusion passageway is linked together, just the discharge end of pressing the mud passageway is located the top of mud extrusion passageway feed end.

2. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 1, wherein: go up frame both ends respectively can be independent mutually and relative the frame is movable adjustment sets up from top to bottom down, the both ends of going up the frame still are equipped with respectively and are used for measuring press mud passageway thickness advance mud measurement scale and go out mud measurement scale.

3. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 1, wherein: the water strainer mesh plate comprises a first water strainer plate body, a second water strainer plate body, wherein the first water strainer plate body is located, the second water strainer plate body is provided with a cavity above the first water strainer plate body, the second water strainer plate body is communicated with the cavity, the cavity is in a negative pressure state, and water after filter pressing enters the cavity through the first water strainer plate body.

4. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 3, wherein: be equipped with in the cavity and separate the chamber backup pad, a plurality of minute chambeies are linked together, the water strainer mesh board is still including setting up first water strainer plate body with third water strainer plate body between the second water strainer plate body, wherein the water straining rate of third water strainer plate body is greater than the water straining rate of first water strainer plate body.

5. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 4, wherein: the second water filter plate body comprises a top plate and waist plates, wherein the top plate is parallel to the first water filter plate body, the waist plates extend downwards from two end parts of the top plate and form a trapezoid cross section, and the lower end parts of the waist plates are fixed on the third water filter plate body.

6. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 5, wherein: the top plate, the waist plate and the cavity cross section formed by the third water filtering plate body are isosceles trapezoids, the water filtering mesh plate further comprises extension joints formed at two ends of the bottom edge of the isosceles trapezoids, wherein the extension joints are provided with arc-shaped surfaces matched with the transmission rollers and corresponding to the end parts, and the bottom surfaces of the extension joints are flush with the bottom surfaces of the first water filtering plate bodies and supported on the inner sides of the lower layers of the annular filter cloth belts.

7. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 1, wherein: the vacuumizing mechanism comprises a vacuumizing cavity arranged at the top of the water filtering mesh plate, an air suction pipeline used for communicating one side of the top of the vacuumizing cavity with the water filtering cavity, an air outlet pipeline communicated with one side of the bottom of the vacuumizing cavity and the water collecting tank, and a negative pressure power source, wherein under the negative pressure provided by the negative pressure power source, air and water are sucked into the water collecting tank, and the water and the air are automatically separated under the self weight.

8. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 1, wherein: the upper layer and the lower layer of the annular filter cloth belt are arranged in parallel, the transmission rollers comprise main transmission rollers and auxiliary transmission rollers, the main transmission rollers are positioned at the discharge end part of the annular filter cloth belt, and the two auxiliary transmission rollers are vertically distributed at the feed end part of the annular filter cloth belt; the centers of the two auxiliary transmission rollers are vertically aligned, and the auxiliary transmission rollers are located below the rollers, and the outer diameter of the auxiliary transmission rollers is larger than that of the auxiliary transmission rollers above the rollers.

9. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 1, wherein: the upper trolley further comprises a cleaning mechanism, a filter cloth belt deviation prevention mechanism and a vibration mechanism, wherein the cleaning mechanism is positioned on the upper portion of the upper frame and can clean the inner surface and the outer surface of the upper layer of the annular filter cloth belt, the filter cloth belt deviation prevention mechanism is arranged on the two opposite sides of the upper frame, and the vibration mechanism is arranged on the water filter mesh plate.

10. The vacuum-pumping, filter-pressing and electro-osmosis combined dehydrator of claim 1, wherein: the lower trolley further comprises an annular track frame arranged on the lower trolley frame, frame wheels arranged at two end parts of the mud pressing component, an inner support frame arranged inside the annular transmission chain, a guide rail arranged on the inner support frame, and a fitting piece matched with and fixed to each guide rail, wherein the frame wheels are arranged on the annular track frame in a rolling mode, the guide rail extends in the length direction of the annular transmission chain, and the fitting piece slides or is arranged on the guide rail in a rolling mode.

Images