CN106865944B

CN106865944B - A kind of vacuum electric infiltration sludge drying device and its method

Info

Publication number: CN106865944B
Application number: CN201710100096.2A
Authority: CN
Inventors: 才建成; 张锡铎; 夏洪娟; 温建伟
Original assignee: BEIJING HI-STANDARD ENVIRONMENTAL EQUIPMENT Co Ltd
Current assignee: Zike Equipment Co ltd
Priority date: 2017-02-23
Filing date: 2017-02-23
Publication date: 2019-11-26
Anticipated expiration: 2037-02-23
Also published as: CN106865944A

Abstract

The present invention relates to a kind of vacuum electric infiltration sludge drying device and its methods, handle sludge for environmental protection industry (epi), realize sludge dehydrating and drying；The vacuum electric permeates sludge drying device, including rack platform, mechanical presses device, electroosmotic dewatering device and vacuum and low temperature dehydration by evaporation device；The mechanical presses device, electroosmotic dewatering device and vacuum and low temperature dehydration by evaporation device becoming one structure are placed on rack platform.The vacuum electric infiltration sludge drying device can carry out electro-osmosis processing and vacuum and low temperature evaporation process while carrying out mechanical presses dehydration to sludge.The vacuum electric infiltration sludge drying method is mainly: becoming uniform mud cake using the mechanical presses processing sludge between filter chamber, while carrying out electroosmotic dewatering and vacuumizing dehydration, reduces the saturated vapor pressure of water, accelerate the evaporation of water during electro-osmosis.The combination of above-mentioned three kinds of technique, effectively reduces the moisture content of sludge, has many advantages, such as that energy conservation and environmental protection, replicability are strong.

Description

Vacuum electro-osmosis sludge drying equipment and method thereof

Technical Field

The invention relates to the technical field of sludge dewatering in the environmental protection industry, in particular to a vacuum electro-osmosis sludge drying device and a vacuum electro-osmosis sludge drying treatment method.

Background

At present, the domestic sludge dewatering technology is mainly mechanical dewatering. The common mechanical sludge dewatering equipment comprises: centrifuger, belt filter press dewaterer, etc. but the dewatering mechanical equipment only dewaters free interstitial water in sludge, and the dewatered sludge has water content of about 75-85%. The plate-and-frame filter press has relatively high dehydration rate, but needs a matched dosing device when the plate-and-frame filter press is used, the dosing amount in the operation process is also large, the sludge drying efficiency is low, and finally the moisture content of the sludge can only reach about 60%.

Disclosure of Invention

In order to solve the problem of high water content of the sludge, the invention provides sludge dewatering equipment and a method integrating mechanical extrusion, electroosmosis and vacuum low-temperature dewatering, which can reduce the water content of the sludge from 80% to about 40% under the condition of not adding any medicament.

The technical scheme adopted by the invention is as follows:

a vacuum electro-osmosis sludge drying device comprises a support platform, a mechanical extrusion device, an electro-osmosis dehydration device and a vacuum low-temperature evaporation dehydration device; the mechanical extrusion device, the electroosmosis dehydration device and the vacuum low-temperature evaporation dehydration device are integrated into an integrated structure and are arranged on the support platform;

the electroosmosis dehydration device comprises a filter chamber unit, wherein the filter chamber unit comprises at least two combined plates and filter cloth arranged between every two combined plates;

the combined plate comprises a cathode plate assembly, a cathode plate mounting frame, an anode plate assembly and an anode plate mounting frame; the edge of the cathode plate assembly is embedded in the cathode plate mounting frame, and the edge of the anode plate assembly is embedded in the anode plate mounting frame; the cathode plate assembly comprises a cathode plate and a cathode insulating plate, the anode plate assembly comprises an anode plate and an anode insulating plate, the cathode insulating plate, the anode plate and the anode insulating plate are parallel to each other, the surfaces, far away from each other, of the anode plate and the cathode plate are an anode plate working surface and a cathode plate working surface, the surfaces, close to each other, of the anode plate and the cathode plate are an anode plate non-working surface and a cathode plate non-working surface, and the cathode insulating plate and the anode insulating plate respectively cover and are fixed on the non-working surfaces of the cathode plate and the anode plate;

the cathode plate mounting frame and the anode plate mounting frame are fixed together through bolts;

the working surface of the cathode plate, the cathode plate mounting frame and the adjacent filter cloth form an inwards concave cathode plate sewage discharge chamber, and the working surface of the anode plate, the anode plate mounting frame and the adjacent filter cloth form an inwards concave anode plate mud chamber;

the mechanical extrusion device comprises a dragging assembly, a pressing assembly and a combined plate sliding assembly; a combined plate sliding assembly is fixed on the cathode plate mounting frame and the anode plate mounting frame of each combined plate, each combined plate can move in parallel on the support platform by means of the combined plate sliding assembly under the action of horizontal traction force of the dragging assembly, and the cathode plate sewage discharge chamber and the anode plate mud chamber on two sides of each piece of filter cloth are combined and compressed into a relatively closed filter chamber through the compressing assembly and the locking assembly;

a filter chamber sludge inlet communicating channel communicated with the anode plate sludge chamber is arranged on the anode mounting frame of each combined plate, and a filter chamber sewage discharge communicating channel communicated with the cathode plate sewage discharge chamber and a filter chamber vacuumizing communicating channel communicated with the relatively closed filter chamber are arranged on the cathode plate mounting frame of each combined plate;

the filter chamber mud inlet communication channels of all the combined plates are mutually communicated in a relatively sealed state of the relatively sealed filter chambers, the filter chamber sewage discharge communication channels of all the combined plates are mutually communicated in a relatively sealed state of the relatively sealed filter chambers, and the filter chamber vacuumizing communication channels of all the combined plates are mutually communicated in a relatively sealed state of the relatively sealed filter chambers;

the vacuum low-temperature evaporation dehydration device comprises a vacuum pump and a vacuumizing connecting pipe, and the vacuumizing connecting pipe is connected with the vacuum pump and the filtering chamber vacuumizing communicating channel;

a plurality of said filter chamber units are positioned side-by-side on said support platform, and said composition plates of a plurality of said filter chamber units are spaced at a uniform distance after said relatively enclosed filter chambers are opened.

Furthermore, a drainage ditch is arranged between the negative plate and the negative plate mounting frame.

Preferably, at least two filter chamber mud inlet communication channels of each relatively closed filter chamber are symmetrically arranged at opposite positions on the upper part of the anode plate mounting frame.

Furthermore, four filter chamber mud inlet communication channels of each relatively closed filter chamber are symmetrically arranged at opposite positions of the anode plate mounting frame.

Furthermore, the relatively sealed filter chamber is sealed by sealing rubber arranged at the periphery of the cathode plate sewage discharge chamber and the anode plate mud chamber.

Further, the vacuum electro-osmosis sludge drying equipment further comprises a filter cloth walking device corresponding to each filter chamber unit, wherein the filter cloth walking device comprises a cloth chain walking unit, and the cloth chain walking unit comprises a driving wheel assembly, a filter cloth fixing device, a supporting mechanism and filter cloth; the driving wheel assembly comprises a driving transmission assembly, a transmission chain wheel and a chain;

the filter cloth and the chain form a closed cloth chain ring around the combined plate of each filter chamber unit under the connection of the filter cloth fixing device; a chain supporting mechanism of the supporting mechanism supports and tightly tensions the chain at the inner side of the cloth chain closed loop; the filter cloth can bypass the filter cloth supporting roller system of the supporting mechanism, and the filter cloth supporting roller system supports and tightly tensions the filter cloth on the inner side of the cloth chain closed loop;

the filter cloth supporting roller is positioned at the lower part of the inner side of the cloth chain closed loop;

the working surface of the filter cloth is parallel to the combined plate when in a working position;

the driving transmission assembly drives the transmission chain wheel to rotate clockwise or anticlockwise under the action of a speed reducer and a steering gear of the vacuum electro-osmosis sludge drying equipment, so as to drive the cloth chain closed loop to rotate clockwise or anticlockwise;

the clockwise rotation displacement is that the working surface of the filter cloth moves to the position of the filter cloth supporting roller system from the working position, and the anticlockwise rotation displacement is that the working surface of the filter cloth moves to the working position from the position of the filter cloth supporting roller system.

Further, the vacuum electro-osmosis sludge drying equipment comprises 2n +1 filter chamber units, wherein n is an integer greater than or equal to 1, and corresponds to each filter chamber unit positioned on 1 and 2n +1 positions, and the filter cloth walking device comprises one cloth chain walking unit; the filter cloth walking device comprises a cloth rope walking unit and/or a cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2-2 n;

the cloth rope walking unit comprises a steel wire rope, a steel wire guide wheel train, a filter cloth fixing device, a supporting mechanism and filter cloth;

wherein each of the cloth rope running units:

the filter cloth and the steel wire rope form a cloth rope closed loop around the combination plate of the filter chamber unit under the connection of the filter cloth fixing device; the steel wire rope guide wheel system supports and tightly tensions the steel wire rope on the inner side of the rope distribution closed loop; the filter cloth can bypass the filter cloth supporting roller system of the supporting mechanism, and the filter cloth supporting roller system supports and tightly tensions the filter cloth on the inner side of the cloth rope closed loop;

the steel wire rope guide wheel train is positioned at the upper part of the inner side of the cloth rope closed loop, and the filter cloth support roller system is positioned at the lower part of the inner side of the cloth rope closed loop; the working surface of the filter cloth is parallel to the combined plate when in a working position;

two cloth chain walking units or two cloth rope walking units or one cloth chain walking unit and one cloth rope walking unit corresponding to two adjacent filter chamber units are connected through a traction steel wire rope, so that the two walking unit walking units synchronously move in the circumferential direction around the filter chamber units and in the walking direction perpendicular to the combined plate surface.

Further, the filter cloth walking device comprises a cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2i +1, wherein i is more than or equal to 0 and less than or equal to n; the filter cloth walking equipment comprises a cloth rope walking unit corresponding to each filter chamber unit positioned at the position of 2j, wherein j is more than or equal to 1 and less than or equal to n;

or,

the filter cloth walking device comprises a cloth chain walking unit corresponding to each filter chamber unit positioned at the positions of 1 and 2n + 1; the filter cloth running gear comprises a cloth rope running unit corresponding to each filter chamber unit positioned at the position of 2-2 n, wherein n is an integer greater than or equal to 1.

Further, the filter cloth fixing device comprises an upper fixing rod system positioned at the upper part and a lower fixing rod system positioned at the lower part when the working surface of the filter cloth is positioned at the working position; the filter cloth walking device also comprises a traction steel wire rope guide wheel train which is arranged at the lower part of each filter chamber unit and is positioned at the lower part of the outer side of the cloth chain closed loop or the cloth rope closed loop corresponding to the filter chamber unit; the cloth rope walking unit is connected with the adjacent cloth chain walking unit at the upstream through a first traction steel wire rope, the cloth rope walking unit is connected with the adjacent cloth chain walking unit at the downstream through a second traction steel wire rope, one end of the first traction steel wire rope is fixed on a lower fixing rod system of the cloth chain walking unit at the upstream and bypasses a traction steel wire rope guide wheel of the cloth chain walking unit, and the other end of the first traction steel wire rope is fixedly connected with the lower fixing rod system of the cloth rope walking unit; one end of the second traction steel wire rope is fixed on the upper fixing rod system of the cloth rope walking unit and bypasses the traction steel wire rope guide wheel of the cloth rope walking unit, and the other end of the second traction steel wire rope is fixedly connected with the lower fixing rod system of the cloth chain walking unit positioned at the downstream.

Further, the steel wire rope is a section of the traction steel wire rope.

Furthermore, the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

Preferably, the mechanical extrusion device further comprises an extrusion water bag arranged inside the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; the cathode plate assembly can slide back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

Further, the system water inlet communication channel and the system water outlet communication channel can be the same communication channel.

Further, the extrusion water bag is a rubber water bag.

Further, the extrusion water bag is a rubber diaphragm sealing product.

Further, the cathode plate is a stainless steel cathode mesh.

Furthermore, a glass fiber reinforced plastic grid is arranged between the cathode insulating plate and the extrusion water bag.

Furthermore, the cathode plate and the anode plate are respectively connected with corresponding electrodes through copper bars.

Further, the anode plate assembly is a pressing plate assembly.

Furthermore, the filter cloth is arranged outside the negative plate sewage draining chamber and is parallel to the negative plate sewage draining chamber.

Preferably, the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate. Furthermore, the filter cloth walking device corresponding to each filter chamber unit further comprises a mud scraping mechanism, and each mud scraping mechanism and each filter cloth supporting roller system are matched to form a mud scraping channel for scraping residual mud on the filter cloth.

Preferably, the mud scraping mechanism is a plate-shaped member plate corresponding to the width of the filter cloth.

Further, the vacuum electro-osmosis sludge drying equipment further comprises a filter cloth cleaning device for cleaning the filter cloth, and the filter cloth cleaning device is located above the filter cloth walking device. Preferably, the filter cloth cleaning device comprises a cleaning telescopic motor, a cleaning walking device and a cleaning telescopic rod; the cleaning and walking device can move back and forth along the walking direction under the driving of the cleaning and walking motor, and the cleaning telescopic rod can reciprocate up and down along the surface of the combined plate under the driving of the cleaning telescopic motor so as to clean the filter cloth and the cathode plate and the anode plate of the combined plate.

Furthermore, the support platform comprises a support upright post and a balance beam, the balance beam is arranged in the middle of the support upright post, and the combined plate sliding assembly is matched with a sliding guide rail on the combined plate sliding assembly to horizontally slide along the moving direction of the combined plate.

Furthermore, the dragging assembly comprises a dragging oil cylinder and a clamping chain, one end of the dragging oil cylinder is arranged on the balance beam, the other end of the dragging oil cylinder is connected with the pressing assembly, the clamping chain is matched with a clamping chain mounting seat on each combination plate, and each combination plate is pushed to horizontally slide on the balance beam along the moving direction of the combination plate under the action of the dragging oil cylinder and the pressing assembly.

Furthermore, the compressing assembly comprises a compressing oil cylinder, a compressing block and an oil cylinder frame, the compressing oil cylinder is connected with the compressing block, a combined plate is fixedly arranged on the compressing block, the compressing oil cylinder and the compressing block are arranged on the oil cylinder frame, one end of the dragging oil cylinder is connected with the oil cylinder frame to drive the compressing oil cylinder and the compressing block to be combined with the filter chamber unit along the moving direction of the combined plate, and the compressing oil cylinder further pushes the compressing block to compress the filter chamber unit along the moving direction of the combined plate to form the relatively sealed filter chamber.

Furthermore, the locking assembly comprises a locking oil cylinder, a movable locking block and a fixed locking block, the fixed locking block is fixed on the balance beam and corresponds to the pressing position of the pressing block, and the locking oil cylinder pushes the movable locking block to move along a locking track of the fixed locking block and be buckled on the fixed locking block in a clamping manner, so that the filtering chamber unit is further locked; the locking track is perpendicular to the moving direction of the combined plate.

Preferably, the fixed locking blocks are arranged in a U-line in the horizontal direction of the balance beam along the moving direction of the combination board.

Further, the support platform comprises the support upright and a horizontal frame; from top to bottom, the first layer horizontal stand of horizontal frame supplies the filter cloth wiper mechanism walking, the second layer horizontal stand be the driving shaft of filter cloth running gear suspension walking with the speed reducer, the support of placing of steering gear, the third layer horizontal stand be the compensating beam, mud cake conveyer has been placed to the bottom of support platform.

A vacuum electro-osmosis sludge drying method comprises the following steps:

a. combining, compressing and locking the filter chamber assembly means;

b. feeding the mud to form mud cakes;

c. the water bag is filled with water to mechanically extrude the mud cakes;

d. electrifying to perform electroosmotic dehydration and simultaneously performing vacuum dehydration (step c and step d can be performed simultaneously);

e. draining water by a rubber diaphragm;

f. opening the relatively sealed filtering chamber, and blanking and removing cakes;

g. the filter cloth runs (can be selected according to the filter cloth conditions);

h. cleaning the filter cloth (selected according to the condition of the filter cloth);

i. the next dewatering cycle is performed.

Wherein, the step c and the step d can be carried out simultaneously, and the step g and the step h can be selected according to the specific conditions of the filter cloth and the working surface of the composition board.

The invention has the technical effects that:

1. according to the invention, the processes of mechanical extrusion dehydration, electroosmosis dehydration and vacuum low-temperature evaporation dehydration are combined to form the vacuum electroosmosis sludge drying equipment with compact structure and higher automation degree, so that the sludge drying efficiency is greatly improved; the water content of the sludge treated by the equipment is reduced from 80% to 40%; and no medicament is added, so that the sludge drying treatment speed is improved, and the treatment process is more environment-friendly.

2. The invention combines the vacuum low-temperature evaporation dehydration process with the electroosmosis dehydration process, reduces the vacuum saturated vapor pressure of water, enables the water in the sludge to be evaporated at lower temperature, consumes the same energy when generating heat in the electroosmosis process, and can evaporate more water; meanwhile, the active temperature of elements such as calcium, magnesium and the like in the sewage is 45-50 ℃, so that the temperature of the water filtered by the method can be controlled within 40 ℃, and the scaling phenomenon is well controlled.

3. The composite board for mechanical extrusion is internally added with an extrusion water bag, and the effect of mechanical extrusion is enhanced to a certain extent by filling water and pressurizing; meanwhile, the filter chamber unit of the invention forms more uniform mud cakes in the relatively closed filter chamber, and the electroosmosis dehydration effect is good.

4. The pressure of the extrusion water bag in the electroosmosis process is always present, the sludge is extruded and cooled by extruding the water in the water bag, and meanwhile, the sludge drying, energy saving and cooling effects are achieved, the temperature of the anode plate is effectively reduced, and the service life of the anode plate is further prolonged.

5. According to the vacuum electroosmosis sludge drying equipment, in the sludge treatment process, the discharged sewage is connected with the corresponding pipeline through the sewage discharge channel and is discharged to the sewage treatment area appointed by a factory, and meanwhile, the vacuum sealing operation is performed in the sewage discharge process, so that the discharge of peculiar smell is greatly reduced, and the environments of workers and the factory are improved.

6. According to the vacuum electroosmosis sludge drying equipment, the filter cloth walking device adopts a novel design method combining the chain and the steel wire rope, so that the active transmission device is reduced, the equipment structure is simplified, and the equipment cost is reduced due to the reduction of the active transmission device.

7. According to the vacuum electroosmosis sludge drying equipment, the filter cloth walking device can walk and reciprocate under the action of the motor reducer, so that the problems that the filter cloth, the anode plate and the cathode plate are difficult to clean and not thorough to clean are effectively solved, and simultaneously, the mud cake timely falls off through self weight and filter cloth movement in the walking process, the trouble of manual unloading is reduced, the working efficiency is improved, and the automation degree of the equipment is improved.

Drawings

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a perspective view of a main structure of an embodiment of the present invention;

FIG. 3 is a front view of the main structure of the embodiment of the present invention;

FIG. 4 is a front view A-A of the main structure of the embodiment of the present invention;

FIG. 5 is a schematic perspective view of a filter cloth running gear according to an embodiment of the present invention;

FIG. 6 is a schematic front view of a filter cloth running gear according to an embodiment of the present invention;

FIG. 7 is a partial schematic front view of a filter cloth running gear according to an embodiment of the present invention;

FIG. 8 is a right side view of a partial schematic view of a filter cloth running gear according to an embodiment of the present invention;

FIG. 9 is a schematic view of a filter chamber unit according to an embodiment of the present invention;

FIG. 10 is a schematic view of the anode side of the composite plate according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of the cathode surface of the composite plate and its left view according to the embodiment of the present invention;

FIG. 12 is a schematic cross-sectional view of a composite board B-B according to an embodiment of the present invention.

The various reference numbers in the figures are listed below:

1-a support platform;

11-supporting upright posts, 12-a first layer of horizontal frame, 13-a second layer of horizontal frame and 14-balance beams;

2-a mechanical extrusion device;

21-a dragging component, 211-a dragging oil cylinder, 212-a clamping chain and 213-a clamping chain mounting seat;

22-a pressing component, 221-a pressing block, 222-a pressing oil cylinder and 223-an oil cylinder frame;

23-locking assembly, 231-movable locking block, 232-fixed locking block and 233-locking oil cylinder;

24-a combination board slide assembly;

3-electroosmotic dehydration equipment;

31-filter chamber unit, 311-combination board 1, 312-combination board 2, 313-filter cloth;

3111-anode plate mounting frame, 3112-cathode plate mounting frame, 3113-anode plate assembly, 3114-cathode plate assembly, 3115-squeeze water bag, 3116-glass fiber reinforced plastic grid, 3117-drainage gutter, 3118-sealing rubber;

31111-mud inlet channel, 31112-blowdown channel, and 31113-system water inlet channel;

31131-anode plate, 31132-anode insulating plate, 31141-cathode plate, 31142-cathode insulating plate;

4-filter cloth cleaning device;

41-cleaning telescopic motor, 42-cleaning walking motor, 43-cleaning walking device and 44-cleaning telescopic rod;

5, a filter cloth walking device;

51-driving shaft, 511-speed reducer, 512-steering gear;

52-drive wheel assembly, 521-drive transmission assembly, 522-drive sprocket, 523-chain;

53-filter cloth fixing device, 531-upper fixing rod system and 532-lower fixing rod system;

54-a support mechanism, 541-a chain support mechanism, 542-a filter cloth support roller system, 543-a steel wire rope guide wheel train, 5431-an upper guide wheel train and 5432-a traction steel wire rope guide wheel train;

55-rope laying closed loop, 551-steel wire rope;

56-closed loop of the cloth chain;

57-a second haul steel cord;

571-a first traction wire rope;

58-a mud scraping mechanism;

6-vacuum low-temperature evaporation dehydration device;

61-vacuum connecting pipe;

7, a system mud inlet device;

71-system mud inlet pipe.

Detailed Description

Embodiments of the present invention are described below with reference to the accompanying drawings:

the technological process of the invention is shown in figure 1, the filter chamber units are firstly combined, compressed and locked; then, the mud is formed into mud cakes; the water bag is filled with water to mechanically extrude the mud cakes; electrifying to perform electroosmosis dehydration on the mud cakes and simultaneously performing vacuum dehydration; then draining water by a rubber diaphragm; finally, opening the relatively closed filter chamber, and blanking and removing cakes; wherein the filter cloth walking and the filter cloth cleaning can be selected according to the filter cloth conditions; the next dewatering cycle is performed.

A vacuum electro-osmosis sludge drying device is shown in figure 2 and comprises a support platform 1, a mechanical extrusion device 2, an electro-osmosis dehydration device 3 and a vacuum low-temperature evaporation dehydration device 6; the mechanical extrusion device 2, the electroosmosis dehydration device 3 and the vacuum low-temperature evaporation dehydration device 6 are integrated into an integrated structure and are arranged on the support platform 1;

the electroosmotic dehydration apparatus 3 as shown in FIG. 9 comprises a filter chamber unit 31, wherein the filter chamber unit 31 comprises at least two combined plates and a filter cloth 313 arranged between each two combined plates;

as shown in fig. 9 to 12, the composite plate 311 includes a cathode plate assembly 3114, a cathode plate mounting frame 3112, an anode plate assembly 3113, an anode plate mounting frame 3111; the cathode plate assembly 3114 includes a cathode plate 31141 and a cathode insulating plate 31142, the anode plate assembly 3113 includes an anode plate 31131 and an anode insulating plate 31132, the cathode plate assembly 3114 is embedded in the cathode plate mounting frame 3112 at an edge, and the anode plate assembly 3113 is embedded in the anode plate mounting frame 3111 at an edge;

the cathode plate 31141, the cathode insulating plate 31142, the anode plate 31131 and the anode insulating plate 31132 are parallel to each other, surfaces of the anode plate 31131 and the cathode plate 31141 away from each other are an anode plate working surface and a cathode plate working surface, surfaces of the anode plate 31131 and the cathode plate adjacent to each other are an anode plate non-working surface and a cathode plate non-working surface, and the cathode insulating plate 31142 and the anode insulating plate 31132 are respectively covered and fixed on the cathode plate non-working surface and the anode plate non-working surface;

the cathode plate mounting frame 3112 and the anode plate mounting frame 3111 in each of the composite plates are fixed together by bolts;

the cathode plate working surface, the cathode plate mounting frame 3112 and the adjacent filter cloth form an inwards concave cathode plate sewage discharge chamber, and the anode plate working surface, the anode plate mounting frame 3111 and the adjacent filter cloth form an inwards concave anode plate mud chamber;

the mechanical extrusion device 2 comprises a dragging component 21, a pressing component 22, a locking component 23 and a combined plate sliding component 24; a combined plate sliding assembly is fixed on the cathode plate mounting frame 3112 and the anode plate mounting frame 3111 of each combined plate 311, each combined plate 311 can move in parallel on the support platform 1 by the aid of the combined plate sliding assembly 24 under the action of horizontal traction force of the dragging assembly 21, and the cathode plate sewage discharge chamber and the anode plate sludge chamber on two sides of each filter cloth 313 are combined and pressed into a relatively closed filter chamber through the pressing assembly 22 and the locking assembly 23;

a filter chamber sludge inlet communicating channel 31111 communicated with the anode plate sludge chamber is arranged on the anode mounting frame 3111 of each combined plate 311, and a filter chamber sewage discharging communicating channel 31112 communicated with the cathode plate sewage discharging chamber and a filter chamber vacuumizing communicating channel communicated with the relatively sealed filter chamber are arranged on the cathode plate mounting frame 3112 of each combined plate 311;

the filter chamber sludge inlet communicating channels 31111 of the combination plates 311 are communicated with each other in a relatively sealed state of the relatively sealed filter chamber, the filter chamber sewage outlet communicating channels 31112 of the combination plates are communicated with each other in a relatively sealed state of the relatively sealed filter chamber, and the filter chamber vacuumizing communicating channels of the combination plates are communicated with each other in a relatively sealed state of the relatively sealed filter chamber;

the vacuum low-temperature evaporation dehydration device 6 comprises a vacuum pump and a vacuumizing connecting pipe, and the vacuumizing connecting pipe 61 is connected with the vacuum pump and the filtering chamber vacuumizing communicating channel;

the filter chamber units 31 are arranged on the support platform 1 side by side, and after the relatively closed filter chamber is opened, the distance between the combined plates of the filter chamber units is consistent.

The dragging oil cylinder 211 and the pressing oil cylinder 222 which belong to a hydraulic system of a mechanical extrusion device jointly act to combine and press all the filter chamber units 31 along the moving direction of the combined plate to form a plurality of well-sealed cavities, namely relatively closed filter chambers, and a locking assembly locks the relatively closed filter chambers; the sludge with the water content of about 80 percent after being processed by a press or a centrifuge is pumped into the relatively closed filter chamber from a system sludge inlet pipe 71 by a sludge inlet screw pump, and the sludge is preliminarily extruded by the pump pressure of the sludge inlet screw pump and is filled in the relatively closed filter chamber; the process is a preliminary mechanical extrusion. After the preliminary mechanical extrusion is finished, a mud cake with a regular shape is formed in the relatively closed filter chamber.

After the preliminary mechanical extrusion is finished, supplying power to the cathode plate 31141 and the anode plate 31131, and performing electroosmosis dehydration on mud cakes in the relatively closed filter chamber; in the electro-osmotic dehydration process, the anode plate 31141 generates heat, and the temperature is higher than the boiling point of water to evaporate and remove part of the water. Meanwhile, a vacuum pump is started to carry out vacuumizing treatment through a vacuumizing connecting pipe 61 and a vacuumizing communication channel of the filtering chamber, so that the saturated vapor pressure of water is reduced, and vacuum low-temperature evaporation dehydration can be effectively realized while electroosmosis dehydration is carried out; the saturated vapor pressure of water is reduced, and the service life of the anode plate and the cathode plate can be effectively prolonged.

Further, a drainage groove 3117 is provided between the cathode plate 31141 and the cathode plate mounting frame 3112; so that the sewage in the negative plate sewage discharging chamber can smoothly flow into the filter chamber sewage discharging communicating channel 31112.

Preferably, at least two sludge inlet communication channels 31111 are formed in each of the relatively sealed filter chambers, and the sludge inlet communication channels are symmetrically arranged at opposite positions on the upper portion of the anode plate mounting frame 3111, so that sludge is spread over the relatively sealed filter chambers under the action of gravity and pump pressure, and the sludge inlet efficiency is improved.

Further, four sludge inlet communicating channels 31111 are provided for each of the filter chambers of the relatively closed filter chambers, and the sludge inlet communicating channels are symmetrically arranged at opposite positions of the anode plate mounting frame 3111, so that the sludge inlet efficiency is further improved.

Furthermore, the relatively sealed filter chamber is sealed by the sealing rubber 3118 arranged around the cathode plate sewage discharge chamber and the anode plate mud chamber, so that the sealing is realized, meanwhile, the buffer can be provided for mechanical extrusion, and the effect of protecting the combined plate assembly is also achieved. Other materials may be used in place of the sealing rubber.

As shown in fig. 5-8, further, the vacuum electro-osmosis sludge drying apparatus further includes a filter cloth running gear 5, corresponding to each filter chamber unit, the filter cloth running gear 5 includes a cloth chain running unit, and the cloth chain running unit includes a driving wheel assembly 52, a filter cloth fixing device 53, a supporting mechanism 54, and a filter cloth 313; the driving wheel assembly 52 comprises a driving transmission assembly 521, a transmission chain wheel 522 and a chain 523;

the filter cloth 313 and the chain 523 form a closed cloth chain loop 56 around the combined plate 311 of the filter chamber unit 31 under the connection of the filter cloth fixing device 53; the chain supporting mechanism 541 of the supporting mechanism 54 supports and tensions the chain 523 inside the closed loop of the cloth chain; the filter cloth 313 can bypass the filter cloth supporting roller system 542 of the supporting mechanism 54, and the filter cloth supporting roller system 542 supports and tensions the filter cloth 313 at the inner side of the closed loop of the cloth chain;

the filter cloth supporting roller system 542 is positioned at the lower part of the inner side of the cloth chain closed loop 56, and the working surface of the filter cloth 313 is parallel to the combined plate 311 when in the working position;

the driving transmission assembly 521 drives the transmission chain wheel 522 to rotate clockwise or anticlockwise under the action of the speed reducer 511 and the steering device 512 of the vacuum electro-osmosis sludge drying equipment, so as to drive the cloth chain closed loop 56 to rotate clockwise or anticlockwise;

the clockwise rotation displacement is that the working surface of the filter cloth 313 moves from a working position to the position of the filter cloth supporting roller system 542, and the counterclockwise rotation displacement is that the working surface of the filter cloth 313 moves from the position of the filter cloth supporting roller system 542 to the working position.

After the sludge drying and dewatering are completed, the relatively closed filter chamber is opened, and the mud cake falls from the filter chamber under the action of self weight. At this time, the filter cloth traveling device 5 starts to work, and the driving shaft 51 drives the driving transmission assembly 521 and the transmission sprocket 522 of the driving wheel assembly 52 to rotate under the action of the speed reducer 511, so as to drive the cloth chain closed loop 56 to rotate clockwise; when the filter cloth rotates clockwise, the working surface of the filter cloth 313 sequentially passes through the filter cloth supporting roller system 542, so that the residual sludge can fall off in time. The filter cloth 313 does not completely pass through the filter cloth supporting roller system 542, and when the working surface of the filter cloth 313 completely or the part which is easy to store mud passes through the filter cloth supporting roller system 542, the speed reducer 511 reversely rotates under the action of the diverter 512, so as to drive the cloth chain closed loop 56 to rotate anticlockwise to a working position.

The filter cloth walking device 5 reciprocates under the action of the motor reducer, the anode plate 31131 and the cathode plate 31141 can be exposed, and the filter cloth washing mechanism is used for washing the filter cloth, so that the problems that the filter cloth, the anode plate and the cathode plate are difficult to wash and not thorough to wash are effectively solved, and simultaneously, mud cakes timely drop through self weight and filter cloth movement in the walking process, the trouble of manual unloading is reduced, the working efficiency is improved, and the automation degree of equipment is improved. Further, the vacuum electro-osmosis sludge drying equipment comprises 2n +1 filter chamber units, wherein n is an integer greater than or equal to 1, and the filter cloth walking device 5 comprises one cloth chain walking unit 56 corresponding to each filter chamber unit located at the 1 and 2n +1 positions; the filter cloth running gear comprises a cloth rope running unit 55 and/or a cloth chain running unit 56 corresponding to each filter chamber unit positioned at the position of 2-2 n;

the cloth rope walking unit comprises a steel wire rope 551, a steel wire guide wheel train 543, a filter cloth fixing device 53, a supporting mechanism and a filter

A cloth 313;

wherein each of the cloth rope running units:

the filter cloth 313 and the steel wire 551 form a cloth rope closed loop 55 around the combined plates of the filter chamber unit under the connection of the filter cloth fixing device 53; the steel wire rope guide wheel train 543 supports and tensions the steel wire rope 551 at the inner side of the rope distribution closed loop 55; the filter cloth 313 can bypass a filter cloth supporting roller system 542 of the supporting mechanism, and the filter cloth supporting roller system 542 supports and tightly tensions the filter cloth 313 at the inner side of the cloth rope closed loop 55;

the steel wire rope guide wheel train 543 is located at the upper part of the inner side of the cloth rope closed loop 55, and the filter cloth support roller train 542 is located at the lower part of the inner side of the cloth rope closed loop 55; the working surface of the filter cloth 313 is parallel to the composition board when in the working position;

two cloth chain walking units or two cloth rope walking units or one cloth chain walking unit and one cloth rope walking unit corresponding to two adjacent filter chamber units are connected through a traction steel wire rope, so that the two walking units synchronously move in the circumferential direction around the filter chamber units and in the walking direction vertical to the combined plate surface; wherein the circumferential direction refers to the clockwise or counterclockwise rotation direction of the cloth rope closed loop 55 or the cloth chain closed loop 56.

Preferably, the filter cloth walking device comprises one cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2i +1, wherein i is more than or equal to 0 and less than or equal to n; the filter cloth walking equipment comprises a cloth rope walking unit corresponding to each filter chamber unit positioned at the position of 2j, wherein j is more than or equal to 1 and less than or equal to n;

or,

the filter cloth running gear 5 comprises one cloth chain running unit corresponding to each filter chamber unit located at the 1 and 2n +1 positions; the filter cloth running gear comprises a cloth rope running unit corresponding to each filter chamber unit positioned at the position of 2-2 n, wherein n is an integer greater than or equal to 1.

Further, the filter cloth fixing device 5 includes an upper fixing bar system 531 positioned at an upper portion and a lower fixing bar system 532 positioned at a lower portion when the working surface of the filter cloth 313 is located at the working position; the filter cloth walking device 5 further comprises a traction steel wire rope guide wheel train 5432 which is arranged at the lower part of each filter chamber unit and is positioned at the lower part of the outer side of the cloth chain closed loop 56 or the cloth rope closed loop 55 corresponding to the filter chamber unit; the cloth rope walking unit is connected with the cloth chain walking unit adjacent to the cloth rope walking unit and located at the upstream through a first traction steel wire rope 571, the cloth rope walking unit is connected with the cloth chain walking unit adjacent to the cloth rope walking unit and located at the downstream through a second traction steel wire rope 57, one end of the first traction steel wire rope 571 is fixed on a lower fixing rod system 532 of the cloth chain walking unit located at the upstream, the first traction steel wire rope bypasses a traction steel wire rope guide wheel train 543 of the cloth chain walking unit, and the other end of the first traction steel wire rope 571 is fixedly connected with the lower fixing rod system 532 of the cloth rope walking unit; one end of the second traction steel wire rope 57 is fixed on the upper fixing rod system 531 of the cloth rope walking unit, and bypasses the traction steel wire rope guide wheel train 5432 of the cloth rope walking unit, and the other end of the second traction steel wire rope 57 is fixedly connected with the lower fixing rod system 532 of the cloth chain walking unit positioned at the downstream;

fig. 7 is a partially enlarged schematic front view of a filter cloth running gear according to an embodiment of the present invention, which includes two closed cloth chain loops and a closed cloth rope loop disposed between the two closed cloth chain loops; a plurality of cloth rope closed loops and traction steel wire ropes thereof can be arranged between the two cloth chain closed loops; in fig. 7, the driving transmission assembly 521 on the right side drives the transmission sprocket 522 to rotate clockwise (or counterclockwise) under the action of the speed reducer 511 and the steering gear 512, and further drives the cloth chain closed loop 56 composed of the chain 523, the filter cloth 313 and the filter cloth fixing device 53 to rotate clockwise (or counterclockwise); the lower fixing rod system 532 of the cloth chain closed loop 56 moves upwards (or downwards), and then the other traction steel wire rope 571 is driven to pull the upper fixing rod system 531 of the cloth rope closed loop 55 and the filter cloth 313 of the cloth rope closed loop 55 to move downwards (or upwards) and enable the cloth rope closed loop 55 to rotate clockwise (or anticlockwise); meanwhile, the lower fixing rod system 532 of the cloth rope closed loop 55 moves upwards (or downwards) to drive the traction steel wire rope 57 to pull the next cloth rope closed loop or cloth chain closed loop (or anticlockwise) to rotate;

The cloth rope closed loop 55 and the cloth chain closed loop 56 drive the filter cloth walking device to run under the action of the traction steel wire rope, so that the integration degree of the equipment is further improved, and the driving wheel component 52 of the cloth rope closed loop, namely the driving transmission component 521, the transmission chain wheel 522, the chain 523 and other devices, and the chain supporting mechanism 541 are omitted. From the aspect of equipment operation, the active transmission device is reduced, the equipment structure is simplified, and from the aspect of equipment cost, the equipment cost is also reduced due to the reduction of the active transmission device.

Further, the wire rope 551 may be a segment of the traction wire rope 57, one end of which is connected to the upper fixing bar system 531 of the chain distribution closed loop 56, a lower guide wheel train 5432 which extends parallel to both sides of the filter cloth of the chain distribution closed loop 56 and downwardly to and around the chain distribution closed loop 56, a lower fixing bar system 532 which extends to and is fixed through the chain distribution closed loop 55, an upper guide wheel train 5431 which extends upwardly and parallel to and passes around the chain distribution closed loop 55, and then extends downwardly and parallel to and is fixed through the upper fixing bar system 532 of the chain distribution closed loop 55, and a lower guide wheel train 5432 which passes around the chain distribution closed loop 55 is connected to the lower fixing bar system 532 of the other chain distribution closed loop 56. The structure is further simplified on the basis of ensuring the traveling function of the filter cloth, and the steel wire rope and the fixing device thereof are saved.

Further, the filtering chamber blowdown communicating passage 31112 and the filtering chamber vacuumizing communicating passage may be the same communicating passage, and a gas-water separation tank is connected to the vacuumizing connecting pipe 61, and at this time, the vacuum pump is a water ring vacuum pump.

Preferably, the mechanical pressing device 2 further includes a pressing water bag 3115 disposed inside the combined plate 311, the pressing water bag 3115 is disposed between the cathode plate assembly 3114 and the anode plate assembly 3113, and the cathode plate mounting frame 3112 and the anode plate mounting frame 3111 of the combined plate 311 are provided with a system water inlet communication channel 31113 and a system water outlet communication channel 31114 connected to the pressing water bag 3115; the cathode plate assembly 3114 can slide back and forth over a range of motion on the cathode plate mount 3112 along the direction of the combined plate under the action of the squeeze water pocket 3115. The electric diaphragm pump is utilized to fill water into the extrusion water bag in the combined plate and pressurize the water bag, and partial water in sludge can be removed through mechanical extrusion of the extrusion water bag, so that the deformation of the filter cloth during mechanical extrusion is reduced, and the probability of tearing the filter cloth can be reduced to a certain extent.

Further, the system water inlet communication passage 31113 and the system water outlet communication passage 31114 may be the same communication passage.

Further, the pressing water pocket 3115 may be a rubber water pocket.

Further, the squeeze water bag 3115 may be a rubber diaphragm seal.

Further, the cathode plate 31141 may be a stainless steel cathode mesh. The meshes of the stainless steel cathode net can also play a role in draining water.

Further, a glass fiber reinforced plastic grid is disposed between the cathode insulating plate 31142 and the extruded water bladder 3115 to reinforce the structural strength of the cathode assembly plate.

Further, the cathode plate 31141 and the anode plate 31131 are respectively connected to corresponding electrodes through copper bars.

Further, the anode plate assembly 3113 is a pressing plate assembly, that is, the dragging assembly and the pressing assembly push the anode plate surface of the combined plate to press the cathode plate surface of another combined plate.

Further, the filter cloth 313 is arranged outside the cathode plate sewage draining chamber and is parallel to the cathode plate sewage draining chamber.

Preferably, the anode plate 31131 is composed of a plurality of small anode plates arranged uniformly, a bolt is arranged on the non-working surface of each small anode plate and is connected with the anode insulating plate 31132, and the structure can save expensive anode plates to a certain extent and reduce equipment cost on the basis of ensuring the electroosmosis function of electroosmosis dehydration.

Further, the filter cloth traveling device 5 further includes a mud scraping mechanism 58 corresponding to each filter chamber unit, and each mud scraping mechanism 58 is matched with each filter cloth supporting roller system 542 to form a mud scraping channel for scraping residual mud on the filter cloth; and scraping residual sludge when the working surface of the filter cloth 313 moves to the position of the filter cloth supporting roller system 542. The sludge retained on the filter cloth is automatically cleaned up by the sludge scraping device. The fallen dry mud is conveyed into a mud truck through a screw conveyer to be cleaned regularly.

Preferably, the mud scraper 58 is a plate-shaped member corresponding to the width of the filter cloth.

As shown in fig. 2-4, the vacuum electro-osmosis sludge drying equipment further comprises a filter cloth cleaning device 4 for cleaning filter cloth, wherein the filter cloth cleaning device 4 is located above the filter cloth walking device 5. The filter cloth cleaning device 4 comprises a cleaning telescopic motor 41, a cleaning walking motor 42, a cleaning walking device 43 and a cleaning telescopic rod 44; the cleaning telescopic motor 41, the cleaning walking motor 42 and the cleaning telescopic rod 44 are located on the cleaning walking device 43, the cleaning walking device 43 can move back and forth in parallel along a guide rail above the filter cloth walking device 5 along the moving direction of the combined plate under the driving of the cleaning walking motor 42, and the cleaning telescopic rod 44 can reciprocate along a track on the cleaning walking device 43 in the direction perpendicular to the moving direction of the combined plate under the action of the cleaning telescopic motor 41 to clean the filter cloth 313 and the cathode plate and the anode plate.

Preferably, the rack platform 1 includes a support column 11 and a balance beam 14, the balance beam is disposed in the middle of the support column 11, and the combination board sliding assembly 24 is matched with a sliding guide rail thereon to horizontally slide along the moving direction of the combination board.

Further, the dragging assembly 21 includes a dragging oil cylinder 211 and a clamping chain 212, one end of the dragging oil cylinder 211 is disposed on the balance beam 14, the other end of the dragging oil cylinder 211 is connected to the pressing assembly 22, the clamping chain 212 is matched with the clamping chain mounting seat 213 on each combination plate 311, and each combination plate 311 is pushed to horizontally slide on the balance beam 14 along the movement direction of the combination plate under the action of the dragging oil cylinder 21 and the pressing assembly 22, so as to ensure that the opening time intervals of each combination plate are the same.

Further, the pressing assembly 22 includes a pressing oil cylinder 222, a pressing block 221 and an oil cylinder frame 223, the pressing oil cylinder 222 is connected to the pressing block 221, the combination board is fixedly disposed on the pressing block 221, the pressing oil cylinder 222 and the pressing block 221 are disposed on the oil cylinder frame 223, one end of the dragging oil cylinder 21 is connected to the oil cylinder frame 223, the pressing oil cylinder 222 and the pressing block 221 are driven to merge the filter chamber unit 31 along the movement direction of the combination board, and the pressing oil cylinder 222 further pushes the pressing block 221 to press the filter chamber unit 31 along the movement direction of the combination board to form the relatively sealed filter chamber.

Further, the locking assembly 23 includes a locking cylinder 233, a movable locking block 231 and a fixed locking block 232, the fixed locking block 232 is fixed on the balance beam 14 and corresponds to the pressing position of the pressing block 221, and the locking cylinder 233 pushes the movable locking block 231 to move along the locking track of the fixed locking block 232 and is fastened to the fixed locking block 232 to further lock the filter chamber unit 31.

Preferably, the fixing and locking blocks 232 are arranged along a U-shaped row in the horizontal direction of the balance beam 14 along the moving direction of the assemblable plate to reinforce the structural rigidity and strength of the balance beam 14.

Further, the support platform 1 comprises a support upright 11 and a horizontal frame; the first layer of horizontal frame 12 is used for the filter cloth cleaning mechanism to walk, the second layer of horizontal frame 13 is used for a driving shaft 51 of the filter cloth traveling device to walk in a hanging mode and a placing support for placing a power mechanism speed reducer 511 and a steering gear 512 of the filter cloth traveling device, the third layer of horizontal frame is used for the balance beam 14, and a mud cake conveying device is arranged at the bottom of the support platform 1.

A vacuum electro-osmosis sludge drying method comprises the following steps:

a. combining, compressing and locking the filter chamber assembly means;

b. feeding the mud to form mud cakes;

c. the water bag is filled with water to mechanically extrude the mud cakes;

d. electrifying to perform electroosmosis dehydration and simultaneously performing vacuum dehydration;

e. draining water by a rubber diaphragm;

i. the next dewatering cycle is performed.

The equipment runs for about 6 cycles every day, and after a certain period, the filter cloth is cleaned by the cleaning mechanism 6.

It should be noted that the above-described embodiments may enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. Therefore, although the present invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.

Claims

1. A vacuum electro-osmosis sludge drying device is characterized by comprising a support platform, a mechanical extrusion device, an electro-osmosis dehydration device and a vacuum low-temperature evaporation dehydration device; the mechanical extrusion device, the electroosmosis dehydration device and the vacuum low-temperature evaporation dehydration device are integrated into an integrated structure and are arranged on the support platform;

the combined plate comprises a cathode plate assembly, a cathode plate mounting frame, an anode plate assembly and an anode plate mounting frame; the edge of the cathode plate assembly is embedded in the cathode plate mounting frame, and the edge of the anode plate assembly is embedded in the anode plate mounting frame; the cathode plate assembly comprises a cathode plate and a cathode insulating plate, the anode plate assembly comprises an anode plate and an anode insulating plate, the cathode insulating plate, the anode plate and the anode insulating plate are parallel to each other, the surfaces, far away from each other, of the anode plate and the cathode plate are an anode plate working surface and a cathode plate working surface, the surfaces, close to each other, of the anode plate and the cathode plate are an anode plate non-working surface and a cathode plate non-working surface, and the cathode insulating plate and the anode insulating plate are respectively covered and fixed on the cathode plate non-working surface and the anode;

the cathode plate mounting frame and the anode plate mounting frame in each combined plate are fixed together through bolts;

the mechanical extrusion device comprises a dragging assembly, a pressing assembly and a combined plate sliding assembly; a combined plate sliding assembly is fixed on the cathode plate mounting frame and the anode plate mounting frame of each combined plate, each combined plate moves in parallel on the support platform under the action of horizontal traction force of the dragging assembly by means of the combined plate sliding assembly, and the cathode plate sewage discharge chamber and the anode plate sludge chamber on two sides of each piece of filter cloth are combined and compressed into a relatively closed filter chamber through the compressing assembly and the locking assembly;

a filter chamber mud inlet communication channel communicated with the anode plate mud chamber is arranged on the anode plate mounting frame of each combined plate, and a filter chamber sewage discharge communication channel communicated with the cathode plate sewage discharge chamber and a filter chamber vacuumizing communication channel communicated with the relatively closed filter chamber are arranged on the cathode plate mounting frame of each combined plate;

the filter chamber units are arranged on the support platform side by side, and after the relatively closed filter chamber is opened, the distance between the combined plates of the filter chamber units is consistent.

2. The vacuum electro-osmosis sludge drying apparatus of claim 1, wherein at least two sludge inlet communication channels of the filter chambers of each of the relatively closed filter chambers are symmetrically arranged at opposite positions on the upper portion of the anode plate mounting frame.

3. The vacuum electro-osmosis sludge drying apparatus according to claim 1 or 2, wherein four sludge inlet communication channels are provided for each of the filter chambers of the relatively closed filter chamber, and the anode plate mounting frames are symmetrically arranged at opposite positions.

4. The vacuum electro-osmosis sludge drying apparatus of claim 1 or 2, wherein the relatively sealed filter chamber is sealed by sealing rubber arranged around the cathode plate sewage discharge chamber and the anode plate sludge chamber.

5. The vacuum electro-osmosis sludge drying apparatus of claim 3, wherein the relatively sealed filter chamber is sealed by a sealing rubber disposed around the cathode plate sludge discharge chamber and the anode plate sludge chamber.

6. The vacuum electro-osmosis sludge drying equipment as claimed in one of claims 1 to 2 and 5, further comprising a filter cloth walking device corresponding to each filter chamber unit, wherein the filter cloth walking device comprises a cloth chain walking unit, and the cloth chain walking unit comprises a driving wheel assembly, a filter cloth fixing device, a supporting mechanism and filter cloth; the driving wheel assembly comprises a driving transmission assembly, a transmission chain wheel and a chain;

the filter cloth and the chain form a closed cloth chain ring around the combined plate of each filter chamber unit under the connection of the filter cloth fixing device; a chain supporting mechanism of the supporting mechanism supports and tightly tensions the chain at the inner side of the cloth chain closed loop; the filter cloth bypasses a filter cloth supporting roller system of the supporting mechanism, and the filter cloth supporting roller system supports and tightly tensions the filter cloth on the inner side of the cloth chain closed loop;

the filter cloth supporting roller is positioned at the lower part of the inner side of the cloth chain closed loop; the working surface of the filter cloth is parallel to the combined plate when in a working position;

7. The vacuum electro-osmosis sludge drying equipment as claimed in claim 3, further comprising a filter cloth walking device corresponding to each filter chamber unit, wherein the filter cloth walking device comprises a cloth chain walking unit, and the cloth chain walking unit comprises a driving wheel assembly, a filter cloth fixing device, a supporting mechanism and filter cloth; the driving wheel assembly comprises a driving transmission assembly, a transmission chain wheel and a chain;

8. The vacuum electro-osmosis sludge drying equipment as claimed in claim 4, further comprising a filter cloth walking device corresponding to each filter chamber unit, wherein the filter cloth walking device comprises a cloth chain walking unit, and the cloth chain walking unit comprises a driving wheel assembly, a filter cloth fixing device, a supporting mechanism and filter cloth; the driving wheel assembly comprises a driving transmission assembly, a transmission chain wheel and a chain;

9. The vacuum electro-osmosis sludge drying apparatus of claim 6, wherein: the vacuum electro-osmosis sludge drying equipment comprises 2n +1 filter chamber units, wherein n is an integer greater than or equal to 1, and corresponds to each filter chamber unit positioned at the 1 and 2n +1 positions, and the filter cloth walking device comprises one cloth chain walking unit; the filter cloth walking device comprises a cloth rope walking unit and/or a cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2-2 n;

wherein each of the cloth rope running units:

the filter cloth and the steel wire rope form a cloth rope closed loop around the combination plate of the filter chamber unit under the connection of the filter cloth fixing device; the steel wire rope guide wheel system supports and tightly tensions the steel wire rope on the inner side of the rope distribution closed loop; the filter cloth bypasses a filter cloth supporting roller system of the supporting mechanism, and the filter cloth supporting roller system supports and tightly tensions the filter cloth on the inner side of the cloth rope closed loop;

two cloth chain walking units or two cloth rope walking units or one cloth chain walking unit and one cloth rope walking unit corresponding to two adjacent filter chamber units are connected through a traction steel wire rope, so that the two walking units synchronously move in the circumferential direction around the filter chamber units and in the walking direction perpendicular to the combined plate surface.

10. The vacuum electro-osmosis sludge drying apparatus of claim 7 or 8, wherein: the vacuum electro-osmosis sludge drying equipment comprises 2n +1 filter chamber units, wherein n is an integer greater than or equal to 1, and corresponds to each filter chamber unit positioned at the 1 and 2n +1 positions, and the filter cloth walking device comprises one cloth chain walking unit; the filter cloth walking device comprises a cloth rope walking unit and/or a cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2-2 n;

wherein each of the cloth rope running units:

11. The vacuum electro-osmosis sludge drying apparatus of claim 9, wherein: the filter cloth walking device comprises a cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2i +1, wherein i is more than or equal to 0 and less than or equal to n; the filter cloth walking equipment comprises a cloth rope walking unit corresponding to each filter chamber unit positioned at the position of 2j, wherein j is more than or equal to 1 and less than or equal to n;

or,

12. The vacuum electro-osmosis sludge drying apparatus of claim 10, wherein: the filter cloth walking device comprises a cloth chain walking unit corresponding to each filter chamber unit positioned at the position of 2i +1, wherein i is more than or equal to 0 and less than or equal to n; the filter cloth walking equipment comprises a cloth rope walking unit corresponding to each filter chamber unit positioned at the position of 2j, wherein j is more than or equal to 1 and less than or equal to n;

or,

13. The vacuum electro-osmosis sludge drying apparatus of claim 11 or 12, wherein the filter cloth fixing device comprises an upper fixing bar system at an upper portion and a lower fixing bar system at a lower portion when the working surface of the filter cloth is at the working position; the filter cloth walking device also comprises a traction steel wire rope guide wheel train which is arranged at the lower part of each filter chamber unit and is positioned at the lower part of the outer side of the cloth chain closed loop or the cloth rope closed loop corresponding to the filter chamber unit; the cloth rope walking unit is connected with the adjacent cloth chain walking unit at the upstream through a first traction steel wire rope, the cloth rope walking unit is connected with the adjacent cloth chain walking unit at the downstream through a second traction steel wire rope, one end of the first traction steel wire rope is fixed on a lower fixing rod system of the cloth chain walking unit at the upstream and bypasses a traction steel wire rope guide wheel of the cloth chain walking unit, and the other end of the first traction steel wire rope is fixedly connected with the lower fixing rod system of the cloth rope walking unit; one end of the second traction steel wire rope is fixed on the upper fixing rod system of the cloth rope walking unit and bypasses the traction steel wire rope guide wheel of the cloth rope walking unit, and the other end of the second traction steel wire rope is fixedly connected with the lower fixing rod system of the cloth chain walking unit positioned at the downstream.

14. The vacuum electro-osmosis sludge drying apparatus of claim 13, wherein the wire rope is a section of the traction wire rope.

15. The vacuum electro-osmosis sludge drying apparatus of one of claims 1-2, 5, 7-9, 11-12, and 14, wherein: the mechanical extrusion device also comprises an extrusion water bag arranged in the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode plate mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; and the cathode plate assembly slides back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

16. The vacuum electro-osmosis sludge drying apparatus of claim 3, wherein: the mechanical extrusion device also comprises an extrusion water bag arranged in the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode plate mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; and the cathode plate assembly slides back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

17. The vacuum electro-osmosis sludge drying apparatus of claim 4, wherein: the mechanical extrusion device also comprises an extrusion water bag arranged in the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode plate mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; and the cathode plate assembly slides back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

18. The vacuum electro-osmosis sludge drying apparatus of claim 6, wherein: the mechanical extrusion device also comprises an extrusion water bag arranged in the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode plate mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; and the cathode plate assembly slides back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

19. The vacuum electro-osmosis sludge drying apparatus of claim 10, wherein: the mechanical extrusion device also comprises an extrusion water bag arranged in the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode plate mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; and the cathode plate assembly slides back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

20. The vacuum electro-osmosis sludge drying apparatus of claim 13, wherein: the mechanical extrusion device also comprises an extrusion water bag arranged in the combined plate, the extrusion water bag is arranged between the cathode plate assembly and the anode plate assembly, and a system water inlet communication channel and a system water discharge communication channel which are connected with the extrusion water bag are arranged on the anode plate mounting frame of the combined plate; the system water inlet communication channel and the system water outlet communication channel between the combined plates are mutually communicated under the relatively sealed state of the relatively sealed filter chamber; and the cathode plate assembly slides back and forth on the cathode plate mounting frame within a certain range along the moving direction of the combined plate under the action of the pressing water bag.

21. The vacuum electro-osmosis sludge drying apparatus of one of claims 1-2, 5, 7-9, 11-12, and 14, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

22. The vacuum electro-osmosis sludge drying apparatus of claim 3, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

23. The vacuum electro-osmosis sludge drying apparatus of claim 4, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

24. The vacuum electro-osmosis sludge drying apparatus of claim 6, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

25. The vacuum electro-osmosis sludge drying apparatus of claim 10, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

26. The vacuum electro-osmosis sludge drying apparatus of claim 13, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

27. The vacuum electro-osmosis sludge drying apparatus of claim 15, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

28. The vacuum electro-osmosis sludge drying apparatus of one of claims 16-20, wherein: the filter chamber blowdown communicating channel and the filter chamber vacuumizing communicating channel are the same channel.

29. The vacuum electro-osmosis sludge drying apparatus of claim 15, wherein: the system water inlet communicating channel and the system water drainage communicating channel are the same communicating channel.

30. The vacuum electro-osmosis sludge drying apparatus of one of claims 16-20 and 27, wherein: the system water inlet communicating channel and the system water drainage communicating channel are the same communicating channel.

31. The vacuum electro-osmosis sludge drying apparatus of claim 28, wherein: the system water inlet communicating channel and the system water drainage communicating channel are the same communicating channel.

32. The vacuum electro-osmosis sludge drying apparatus of claim 15, wherein the extrusion water bag is a rubber diaphragm sealing product.

33. The vacuum electro-osmosis sludge drying apparatus of claim 28, wherein the squeeze water bag is a rubber diaphragm seal product.

34. The vacuum electro-osmosis sludge drying apparatus of claim 30, wherein the squeeze water bag is a rubber diaphragm seal product.

35. The vacuum electro-osmosis sludge drying apparatus of any one of claims 16-20, 27, 29 and 31-32 wherein the squeeze water bag is a rubber diaphragm sealing product.

36. The vacuum electro-osmosis sludge drying apparatus of one of claims 1-2, 5, 7-9, 11-12, and 14, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

37. The vacuum electro-osmosis sludge drying apparatus of any one of claims 16-20, 22-27, 29, 31-34, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

38. The vacuum electro-osmosis sludge drying apparatus of claim 3, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

39. The vacuum electro-osmosis sludge drying apparatus of claim 4, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

40. The vacuum electro-osmosis sludge drying apparatus of claim 6, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

41. The vacuum electro-osmosis sludge drying apparatus of claim 10, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

42. The vacuum electro-osmosis sludge drying apparatus of claim 13, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

43. The vacuum electro-osmosis sludge drying apparatus of claim 15, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

44. The vacuum electro-osmosis sludge drying apparatus of claim 21, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

45. The vacuum electro-osmosis sludge drying apparatus of claim 28, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

46. The vacuum electro-osmosis sludge drying apparatus of claim 30, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

47. The vacuum electro-osmosis sludge drying apparatus of claim 35, wherein: the negative plate is a stainless steel negative electrode net; the anode plate assembly is a pressing plate assembly.

48. The vacuum electro-osmotic sludge drying apparatus as claimed in any one of claims 16-20, 27, 29, 31-34, 43 and 45-47, wherein a glass fiber reinforced plastic grid is arranged between the cathode insulating plate and the extruded water bag.

49. The vacuum electro-osmosis sludge drying apparatus of claim 15, wherein a glass fiber reinforced plastic grid is disposed between the cathode insulating plate and the extrusion water bag.

50. The vacuum electro-osmosis sludge drying apparatus of claim 28, wherein a glass fiber reinforced plastic grid is disposed between the cathode insulating plate and the extruded water bag.

51. The vacuum electro-osmosis sludge drying apparatus of claim 30, wherein a glass fiber reinforced plastic grid is disposed between the cathode insulating plate and the extruded water bag.

52. The vacuum electro-osmosis sludge drying apparatus of claim 35, wherein a glass fiber reinforced plastic grid is disposed between the cathode insulating plate and the extruded water bag.

53. The vacuum electro-osmosis sludge drying apparatus of claim 37, wherein a glass fiber reinforced plastic grid is disposed between the cathode insulating plate and the extrusion water bag.

54. The vacuum electro-osmosis sludge drying apparatus of one of claims 1-2 and 5, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

55. The vacuum electro-osmotic sludge drying apparatus of any one of claims 7-9, 11-12, 14, 16-20, 22-27, 29, 31-34, 38-47, 49-53, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

56. The vacuum electro-osmosis sludge drying apparatus of claim 3, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

57. The vacuum electro-osmosis sludge drying apparatus of claim 4, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

58. The vacuum electro-osmosis sludge drying apparatus of claim 6, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

59. The vacuum electro-osmosis sludge drying apparatus of claim 10, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

60. The vacuum electro-osmosis sludge drying apparatus of claim 13, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

61. The vacuum electro-osmosis sludge drying apparatus of claim 15, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

62. The vacuum electro-osmosis sludge drying apparatus of claim 21, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

63. The vacuum electro-osmosis sludge drying apparatus of claim 28, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

64. The vacuum electro-osmosis sludge drying apparatus of claim 30, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

65. The vacuum electro-osmosis sludge drying apparatus of claim 35, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

66. The vacuum electro-osmosis sludge drying apparatus of claim 36, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

67. The vacuum electro-osmosis sludge drying apparatus of claim 37, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

68. The vacuum electro-osmosis sludge drying apparatus of claim 48, wherein: the anode plate is composed of a plurality of small anode plates which are uniformly arranged, and the non-working surface of each small anode plate is provided with a bolt which is respectively connected with the anode insulating plate.

69. The vacuum electro-osmosis sludge drying apparatus as claimed in any one of claims 7 to 9, 11 to 12, 14, 24 to 26, 40 to 42 and 58 to 60, wherein the filter cloth running device further comprises a sludge scraping mechanism corresponding to each filter chamber unit, each sludge scraping mechanism and each filter cloth support roller system are matched to form a sludge scraping channel for scraping residual sludge on the filter cloth; the mud scraping mechanism is a plate-shaped component corresponding to the width of the filter cloth.

70. The vacuum electro-osmosis sludge drying equipment as claimed in claim 6, wherein the filter cloth walking device corresponding to each filter chamber unit further comprises a mud scraping mechanism, and each mud scraping mechanism and each filter cloth supporting roller system are matched to form a mud scraping channel for scraping residual sludge on the filter cloth; the mud scraping mechanism is a plate-shaped component corresponding to the width of the filter cloth.

71. The vacuum electro-osmosis sludge drying apparatus according to claim 10, wherein the filter cloth walking device corresponding to each filter chamber unit further comprises a sludge scraping mechanism, and each sludge scraping mechanism and each filter cloth support roller system are matched to form a sludge scraping channel for scraping residual sludge on the filter cloth; the mud scraping mechanism is a plate-shaped component corresponding to the width of the filter cloth.

72. The vacuum electro-osmosis sludge drying apparatus according to claim 13, wherein the filter cloth walking device corresponding to each filter chamber unit further comprises a sludge scraping mechanism, and each sludge scraping mechanism and each filter cloth support roller system are matched to form a sludge scraping channel for scraping residual sludge on the filter cloth; the mud scraping mechanism is a plate-shaped component corresponding to the width of the filter cloth.

73. The vacuum electro-osmosis sludge drying equipment as claimed in any one of claims 7 to 9, 11 to 12, 14, 24 to 26, 40 to 42, 58 to 60 and 70 to 72, further comprising a filter cloth cleaning device for cleaning filter cloth, wherein the filter cloth cleaning device is positioned above the filter cloth walking device;

the filter cloth cleaning device comprises a cleaning telescopic motor, a cleaning walking device and a cleaning telescopic rod; the cleaning and walking device moves back and forth along the walking direction under the driving of the cleaning and walking motor, and the cleaning telescopic rod reciprocates up and down along the surface of the combined plate under the driving of the cleaning telescopic motor so as to clean the filter cloth and the cathode plate and the anode plate of the combined plate.

74. The vacuum electro-osmosis sludge drying equipment as claimed in claim 6, further comprising a filter cloth cleaning device for cleaning the filter cloth, wherein the filter cloth cleaning device is positioned above the filter cloth walking device;

75. The vacuum electro-osmosis sludge drying equipment as claimed in claim 10, further comprising a filter cloth cleaning device for cleaning the filter cloth, wherein the filter cloth cleaning device is located above the filter cloth walking device;

76. The vacuum electro-osmosis sludge drying equipment as claimed in claim 13, further comprising a filter cloth cleaning device for cleaning the filter cloth, wherein the filter cloth cleaning device is located above the filter cloth walking device;

77. The vacuum electro-osmosis sludge drying apparatus according to claim 69, further comprising a filter cloth cleaning device for cleaning the filter cloth, wherein the filter cloth cleaning device is located above the filter cloth walking device;

78. The vacuum electro-osmosis sludge drying apparatus according to any one of claims 74-76, wherein the support platform comprises a support column and a balance beam, the balance beam is disposed at the middle of the support column, and the combination plate sliding assembly is matched with a sliding guide rail on the balance beam to slide horizontally along the moving direction of the combination plate; the device also comprises a dragging component;

the dragging assembly comprises a dragging oil cylinder and a clamping chain, one end of the dragging oil cylinder is arranged on the balance beam, the other end of the dragging oil cylinder is connected with the pressing assembly, the clamping chain is matched with a clamping chain mounting seat on each combination plate, and each combination plate is pushed to horizontally slide on the balance beam along the moving direction of the combination plate under the action of the dragging oil cylinder and the pressing assembly;

the pressing assembly comprises a pressing oil cylinder, a pressing block and an oil cylinder frame, the pressing oil cylinder is connected with the pressing block, the pressing block is fixedly provided with the combined plate, the pressing oil cylinder and the pressing block are arranged on the oil cylinder frame, one end of the dragging oil cylinder is connected with the oil cylinder frame and drives the pressing oil cylinder and the pressing block to be combined with the filter chamber unit along the moving direction of the combined plate, and the pressing oil cylinder further pushes the pressing block to press the filter chamber unit to form the relatively sealed filter chamber;

the locking assembly comprises a locking oil cylinder, a movable locking block and a fixed locking block, the fixed locking block is fixed on the balance beam and corresponds to the pressing position of the pressing block, and the locking oil cylinder pushes the movable locking block to move along a locking track of the fixed locking block and be buckled on the fixed locking block in a clamping manner, so that the filter chamber unit is further locked; the locking track is perpendicular to the moving direction of the combined plate;

the fixed locking blocks are arranged along the moving direction of the composition board in a U-shaped row in the horizontal direction of the balance beam;

the support platform comprises the support upright and a horizontal frame; from top to bottom, the first layer horizontal stand of horizontal frame supplies the filter cloth belt cleaning device to walk, the second layer horizontal stand be the filter cloth running gear hang the driving shaft of walking and the speed reducer, the support of placing of steering gear, the third layer horizontal stand be the compensating beam, mud cake conveyer has been placed to the bottom of support platform.

79. A method for drying sludge by vacuum electro-osmosis, which is characterized in that the sludge is dried by using the vacuum electro-osmosis sludge drying equipment of any one of claims 15-20, 27-35, 43, 45-52, 61, 63-65 and 68, and the method comprises the following steps:

a. combining, compressing and locking the filter chamber assembly means,

b. the mud is fed into the reactor to form a mud cake,

c. the water bag is filled with water to mechanically extrude the mud cake,

d. electrifying to perform electroosmosis dehydration and vacuum dehydration at the same time,

e. the rubber diaphragm is used for draining water,

f. opening the relatively sealed filter chamber, blanking and removing cakes,

g. the filter cloth moves, and the filter cloth moves,

h. the filter cloth is cleaned,

i. carrying out the next dehydration cycle;

wherein, the step c and the step d are carried out sequentially or simultaneously, and the step g and the step h are selected whether to be carried out according to the specific conditions of the filter cloth and the working surface of the composition board.