CN108211478B - Novel belt vibration roll-in filter equipment - Google Patents

Novel belt vibration roll-in filter equipment Download PDF

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Publication number
CN108211478B
CN108211478B CN201810159036.2A CN201810159036A CN108211478B CN 108211478 B CN108211478 B CN 108211478B CN 201810159036 A CN201810159036 A CN 201810159036A CN 108211478 B CN108211478 B CN 108211478B
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roller
filter
belt
driving
air
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CN108211478A (en
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贾守民
贾中瑞
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • B01D33/042—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering whereby the filtration and squeezing-out take place between at least two filtering bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
    • B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/66—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating
    • B01D33/663—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by gases or by heating by direct contact with a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention provides a novel belt type vibration rolling filter device, which comprises a belt type vibration rolling filter which is oppositely arranged left and right, wherein the filter comprises a frame, the frame comprises an upper supporting frame and a lower supporting frame, a layered distributor is arranged at the upstream end of the upper supporting frame, a guide roller, a vibrating part, a driving roller pressing part and a tensioning roller are sequentially arranged on the frame along the flowing direction of materials, annular filter belts are arranged around the guide roller, the vibrating part, the driving roller pressing part and the tensioning roller, a left driving roller pressing part comprises a first extrusion dehydration roller positioned on the upper supporting frame and a second driving motor roller positioned on the lower supporting frame, a right driving roller pressing part comprises a second extrusion dehydration roller positioned on the lower supporting frame and a first driving motor roller positioned on the upper supporting frame, and extrusion gaps are respectively formed between the first extrusion dehydration roller and the first driving motor roller, between the two filter belts around the left driving roller pressing part and the right driving roller pressing part, and between the second extrusion dehydration roller and the second driving motor roller. The liquid content of the filter cake is low, and the productivity is improved.

Description

Novel belt vibration roll-in filter equipment
Technical Field
The invention belongs to the technical field of solid-liquid separation and filtration, and particularly relates to a novel belt type vibration rolling and filtering device.
Background
Solid-liquid separation is an important process link in industries such as mine, metallurgy, chemical industry, papermaking, food, environmental protection and the like. The high-efficiency energy-saving solid-liquid separation equipment is a key for ensuring stable and reliable operation of the process flow. The main equipment for solid-liquid separation of fine particle slurry is a filter, and the existing various filters generally have the defects of low efficiency, high energy consumption, large filter cake liquid content, turbid filtrate and the like.
Currently existing filters mainly comprise a vacuum filter, a pressure filter, a centrifugal filter and a belt filter. The vacuum filter performs solid-liquid separation by means of vacuum negative pressure dehydration, but the vacuum filter has high energy consumption, low single machine productivity, large filter cake liquid content of fine particulate matter slurry, turbid filtrate and high operation cost; the pressure filter uses a slurry pump or compressed air as power to carry out solid-liquid separation, and can be used for producing equipment with large single machine specification and high productivity, but the filtrate of the pressure filter is turbid, the filter cloth consumption is large, and the energy consumption is large; the centrifugal filter has several forms of continuous type, intermittent type, vertical type, horizontal type, plane rotary disk type and the like, but the general centrifugal filter has smaller productivity and difficult filter cloth cleaning.
The existing belt filter press is a high-efficiency filter, has the advantages of simple structure, convenient operation, low energy consumption, continuous operation, high efficiency and the like, but the slurry needs to be flocculated in advance, flocculant is added to enable fine particle solid particles to form floccules, the floccules are distributed on filter cloth, the floccules are dehydrated by gravity and then run between two filter belts, liquid in slurry is removed by extrusion and shearing force, a filter cake is formed, and then the filter cake is separated by two rollers and discharged. However, the method has the defects of large consumption of flocculant, high cost, large water consumption for cleaning filter cloth, large abrasion of the filter cloth, high water content of filter cake and incapability of cleaning the filter cake.
In recent years, with popularization of mine tailing dry discharge technology, the belt filter press is gradually applied to mine tailing filtration and dehydration, so that the development of the belt filter with energy conservation, high efficiency, high productivity and low cost is a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a novel belt type vibration rolling filter device which has the advantages of simple and compact structure, stable operation, low energy consumption, low noise, low water content of filter cakes, good filter effect, continuous operation, capacity improvement, working efficiency improvement and production cost reduction.
The invention adopts the following technical scheme: the utility model provides a novel belt vibration roll-in filter, including the belt vibration roll-in filter of controlling relative setting, belt vibration roll-in filter respectively includes the frame, the frame includes upper supporting frame and the lower braced frame of horizontal setting, upper supporting frame's upstream end is provided with layering distributing device, along the flow direction of material, guide roll has been set gradually in the frame, vibrating portion, drive roll-in portion and tensioning roller, the surface around guide roll in the frame, vibrating portion, drive roll-in portion and tensioning roller is provided with the annular filter belt, layering distributing device thick liquids evenly arrange on the filter belt, upper supporting frame's upstream end below is provided with the filtrate receiving tank that is used for receiving the filtrate, upper supporting frame's downstream end below is provided with the washing liquid receiving tank that is used for receiving the washing liquid, the downstream end in filtrate receiving tank is connected with the same position in upper supporting frame middle part of washing liquid receiving tank's upper portion, be provided with the washing water pipe that is used for the washing liquid in the filter belt top, the empty section upper portion of two filter belts of controlling in lower braced frame is equipped with the pressure shower that is used for wasing the filter belt respectively;
The driving roller press part of the belt type vibration roller press filter positioned on the left side comprises a first extrusion dehydration roller arranged on an upper supporting frame and a second driving electric roller arranged on a lower supporting frame, the driving roller press part of the belt type vibration roller press filter positioned on the right side comprises a second extrusion dehydration roller arranged on the lower supporting frame and a first driving electric roller arranged on the upper supporting frame, the first extrusion dehydration roller is oppositely arranged with the first driving electric roller, the second extrusion dehydration roller is oppositely arranged with the second driving electric roller, a first extrusion gap is formed between the first extrusion dehydration roller and the first driving electric roller, a second extrusion gap is formed between a filter belt surrounding the left side driving roller press part and a filter belt surrounding the right side driving roller press part, and a third extrusion gap is formed between the second extrusion dehydration roller and the second driving electric roller. The included angle between the connecting line of the main shaft of the extrusion dehydration roller and the driving electric roller and the horizontal line is 40-50 degrees, and the included angle between the overlapping parts of the left filtering belt and the right filtering belt and the horizontal line is 40-50 degrees.
A left side stripping tube for blowing air to the filter belt to separate solid materials from the left side filter belt is arranged on the lower stream of the second driving electric roller and the upper side of the left side filter belt, a right side stripping tube for blowing air to the filter belt to separate solid materials from the right side filter belt is arranged on the lower stream of the second squeezing dehydration roller and the upper side of the right side filter belt, and a filter cake receiving groove for receiving the solid materials is arranged below the lower supporting frame and corresponds to the filter cake discharging position.
And a blowing cover for blowing air to the filter cake is arranged at the overlapping part of the left filtering belt and the right filtering belt between the two-stage extrusion dehydration devices, the blowing cover is connected to the frame, and a spring is arranged between the blowing cover and the frame to ensure that the blowing cover is tightly pressed to the filtering belt.
The surface of first extrusion dehydration cylinder is even to be distributed has the through-hole, first extrusion dehydration cylinder has the first fixed hollow axle that does not rotate along with first extrusion dehydration cylinder, first extrusion dehydration cylinder internal fixation epaxial still is provided with first air extraction groove, in the radial direction of first extrusion dehydration cylinder, the bottom and the first hollow axle of first air extraction groove are linked together, the inlet scoop of first air extraction groove other end is close to the internal surface of first extrusion dehydration cylinder and sets up relative first extrusion clearance entrance, be provided with the felt sealing pad between the inlet scoop of first air extraction groove and the internal surface of first extrusion dehydration cylinder, the outer end intercommunication of first hollow axle has first exhaust column, the second extrusion dehydration cylinder is the same with first extrusion dehydration cylinder structure, the second extrusion dehydration cylinder is provided with the second fixed hollow axle, second air extraction groove and second exhaust column, the central height of first extrusion dehydration cylinder is less than the central height of first drive motor-driven cylinder, the central height of second extrusion dehydration cylinder is less than the central height of second drive motor-driven cylinder.
The bearing seats at the two ends of the first main shaft of the first driving electric roller are respectively connected with a first air cylinder for pushing the first main shaft, the bearing seats at the two ends of the second main shaft of the second driving electric roller are respectively connected with a second air cylinder for pushing the second main shaft, the bearing seats at the two ends of the shaft of the tensioning roller of the left belt type vibration rolling filter are respectively connected with a third air cylinder for pushing the tensioning roller shaft, and the bearing seats at the two ends of the shaft of the tensioning roller of the right belt type vibration rolling filter are respectively connected with a fourth air cylinder for pushing the tensioning roller shaft; the bottom plates of the main shaft bearing seats at the two ends of the driving motor-driven roller are provided with dovetail grooves which are connected with the frame; the bottom plates of the main shaft bearing seats at the two ends of the tensioning roller are provided with dovetail grooves which are connected with the dovetail grooves on the frame.
A layered distributor is arranged in the direction which is horizontally perpendicular to the filter belt, the layered distributor is a groove body with a wide upper part and a narrow lower part, the upper groove body extends towards the downstream direction of the filter belt relative to the lower groove body, a spiral stirring shaft is arranged in the lower part of the layered distributor, the spiral stirring shaft extends along the width direction of the filter belt, the spiral stirring shaft is provided with blades with different rotation directions from the middle position to the two end positions, the two ends of the spiral stirring shaft are arranged on a sliding bearing bush seat arranged at the inner end part of the lower groove body, one end of the spiral stirring shaft is provided with a coaxial lower chain wheel, a motor and a speed reducer are arranged above the upper groove body of the layered distributor, an upper chain wheel is arranged on an output shaft of the speed reducer, the upper chain wheel is connected with a lower chain wheel through chain transmission, an upper discharge opening extending along the length direction of a spiral stirring shaft is arranged on one side of an upper groove body relative to the movement direction of the filtering belt, an upper discharge guide groove is connected with the upper discharge opening, a lower discharge opening extending along the length direction of the spiral stirring shaft is arranged on one side of a lower groove body relative to the movement direction of the filtering belt, a lower discharge guide groove is connected with the lower discharge opening, the height of the lower discharge opening is basically the same as the axial height of the spiral stirring shaft, the length of the lower discharge opening is smaller than the width of the filtering belt, and the length of the upper discharge opening is smaller than the length of the lower discharge opening.
The vibration part comprises a high-frequency electromagnetic vibrator arranged on the upper supporting frame, an excitation carrier roller in contact with the filter belt is arranged on the high-frequency electromagnetic vibrator, a plurality of vibration parts are arranged between the guide roller and the driving roller pressing part, and a vibration isolation rubber damping block is arranged between the high-frequency vibration and the frame.
The automatic liquid discharge cylinder is connected with the first exhaust pipe and the second exhaust pipe respectively, the screw air compressor is connected with the automatic liquid discharge cylinder, the screw air compressor is further provided with a first air pipe connected with the first air cylinder, a second air pipe connected with the second air cylinder, a third air pipe connected with a fourth air pipe of the third air cylinder and a fourth air pipe connected with a blowing cover, a fifth air pipe connected with a right blowing pipe of the left blowing pipe, numerical control pressure control valves are respectively arranged on the first air pipe, the second air pipe and the third air pipe, common pressure flow control valves are respectively arranged on the fourth air pipe and the fifth air pipe, and the extrusion pressure between the second extrusion dehydration roller and the second driving electric roller is larger than that between the first extrusion dehydration roller and the first driving electric roller.
A plurality of deflection-preventing carrier rollers for preventing the deflection of the filter belt are further arranged between the guide roller and the driving roller pressing part on the upper supporting frame, and discs which are larger than the carrier roller in diameter and have a certain inclination and are used for correcting the position of the filter belt are arranged at two ends of each deflection-preventing carrier roller; the guide roller, the first extrusion dehydration roller and the second extrusion dehydration roller are respectively provided with a disc with a diameter larger than the diameter of the roller and a certain inclination for correcting the position of the filter belt at two ends, and the rotation linear speed of the disc is the same as the movement speed of the filter belt. The movement speed of the filter belt of the left belt type vibration rolling filter is the same as that of the filter belt of the right belt type vibration rolling filter, and a plurality of flat carrier rollers for supporting the filter belt are arranged between the driving roller pressing part and the tensioning roller on the lower supporting frame; the electric roller is driven to realize variable frequency speed regulation so as to realize continuous speed regulation between the horizontal movement speed of the filter belt and 0.15 m/s-0.5 m/s.
The surface of guide roll, vibration roller, tensioning roller, first drive motorized pulley, second drive motorized pulley all is provided with the rubber layer respectively, drives motorized pulley glue film in order to increase the friction drive power of drive filter belt, has netted slot in the glue film to do benefit to liquid to both ends and lower part in time discharge.
An anti-sticking layer is coated between the upper flat carrier roller and the lower flat carrier roller.
The cleaning spray water pipes are arranged on the lower empty sections of the filtering belts at the two sides to wash the empty section filtering belts.
The beneficial effects of the invention are as follows:
(1) The left filter belt and the right filter belt are simultaneously distributed, and the filter layers are thinner, so that the vibration dehydration and the gravity dehydration are facilitated; in the extrusion dehydration and blow-drying dehydration areas, two filtering belts are overlapped, and filter cakes are overlapped, so that the extrusion dehydration is facilitated. Because the materials close to the filter belt are coarser particles and flocks, fine particles can be prevented from being extruded out of the filter screen, and filtrate is prevented from being mixed; because the filter cake carried between the two filter belts is thicker, friction and abrasion are not generated between the two filter belts, and the service life of the filter belts is prolonged;
(2) Compared with the traditional belt filter press, the motion trail of the filter belt of the machine is simpler and more convenient, the winding extrusion area is shorter, the tension born by the filter belt is smaller, the abrasion of the annular filter belt is uniform, and the service life of the filter belt is prolonged by more than one time;
(3) Compared with the traditional belt filter press, the two filter belts on the left side and the right side are simultaneously distributed, the running speed of the filter belts can be improved, and the productivity is increased by more than one time;
(4) Due to the adoption of various technologies such as flocculation, precoating, vibration, vacuum suction filtration, rolling, blow-drying and the like, the liquid content of a filter cake is low, the impurity content of filtrate is low, and the solid-liquid separation efficiency is greatly improved;
(5) The method adopts a layered cloth precoating filtering technology, uses the flocculation and gravity self-classification characteristics of slurry, takes coarse particles and floc substances precipitated at the bottom of a layered distributor as precoating materials, eliminates the use of non-slurry substance bedding materials in the prior art, reduces energy consumption and cost, and particularly reduces the use cost of flocculant because of adopting the layered cloth precoating filtering technology for fine particle slurry with relatively small viscosity;
(6) The energy consumption is far lower than that of the traditional vacuum filter and chamber filter press;
(7) Because the filter cake pressure air blowing technology is adopted, and the filter belt is tightly contacted with larger granular solid materials, the filter belt is less in bonding filter residues and is easier to clean, and the water consumption for cleaning the filter belt can be reduced;
(8) Because of adopting automatic feeding, automatic discharging, automatic cleaning and automatic program control, the labor intensity is low and the operation environment condition is good.
(9) The spiral layered distributor ensures that the filter belt is uniformly fed without generating a unbalanced load, and ensures that the filter belt does not deviate and stably operates.
(10) Because the filter belt guide disc is arranged, the performance is superior to that of the filter belt guide vertical roller, the phenomenon of deviation, friction and tearing of the filter belt is avoided, and the service life of the filter belt is greatly prolonged
(11) When the filter cake passes through the space between the extrusion dehydration roller and the driving electric roller, the filter cake is extruded and dehydrated, the extrusion pressure between the extrusion dehydration roller and the driving electric roller is adjustable, and the filter cake dehydration efficiency can be further improved and the liquid content of the filter cake is reduced under the action of the surface through holes, the air draft groove, the hollow shaft and the air draft tube of the extrusion dehydration roller.
(12) The speed of the motor-driven roller is regulated by using variable frequency speed regulation, so that the movement speed of the roller can be regulated between 0.15m/s and 0.5 m/s.
Therefore, the machine has the advantages of continuous operation, high productivity efficiency, high solid-liquid separation efficiency, washability, long service life of the filter belt, low energy consumption, less flocculant consumption, less washing water consumption, low labor intensity, low production cost and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a top view of the present invention.
Detailed Description
In order to make the technical purpose, technical scheme and beneficial effect of the present invention more clear, the technical scheme of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the novel belt type vibration rolling filter device comprises a belt type vibration rolling filter which is oppositely arranged left and right, wherein the belt type vibration rolling filter respectively comprises a frame 1, an upper supporting frame 101 and a lower supporting frame 102 which are horizontally arranged, a layered distributing device 2 is arranged at the upstream end part of the upper supporting frame 101, a guide roller 3, a vibrating part 4, a driving rolling part 5 and a tensioning roller 6 are sequentially arranged on the frame 1 along the flowing direction of materials, the layered distributing device 2 is positioned at the upstream of the guide roller 3, the layered distributing device 2 is close to the guide roller 3, and an annular filter belt 7 is arranged around the surfaces of the guide roller 3, the vibrating part 4, the driving rolling part 5 and the tensioning roller 6 on the frame 1.
The filter belt of the left-side belt type vibration rolling filter moves from left to right along an arrow W on the upper support frame, and the filter belt of the right-side belt type vibration rolling filter moves from right to left along an arrow P on the upper support frame. Under the action of gravity and vibration, liquid in slurry is filtered below the filter belt 7 through the filter holes on the filter belt 7, a filtrate receiving tank 8 for receiving filtrate is arranged below the upstream end of the upper support frame 101, a washing liquid receiving tank 9 for receiving washing liquid is arranged below the downstream end of the upper support frame 101, the downstream end of the filtrate receiving tank 8 is connected with the upstream end of the washing liquid receiving tank 9 at the same position of the middle part of the upper support frame 101, a washing water pipe 10 for washing the material is arranged above the washing liquid receiving tank 9 and above the filter belt 7, the liquid in slurry is filtered at the upstream end of the filter belt 7 (the upstream end of the upper support frame 101), water is sprayed to the filter belt 7 through the washing water pipe 10 at the position of the middle part of the upper support frame 101, a filter cake formed after the preliminary filtration of the slurry is washed, and residual liquid and fine particles in the filter cake enter the washing liquid receiving tank 9 below through the filter belt holes under the action of the washing water.
The downstream end of the filtrate-receiving tank 8 is connected to the upstream end of the wash-receiving tank 9 at the same position in the middle of the upper support frame 101 so that all of the liquid in the stock flows into the filtrate-receiving tank 8 and the wash-receiving tank 9 without directly flowing to the ground to form a pollution. The filtrate and the washing liquid respectively enter a sedimentation tank outside the equipment through pipelines.
Preferably, the washing water pipes 10 are arranged side by side in plural to sufficiently wash the filter cake, and more preferably, the washing water pipes 10 are arranged at positions above the upstream end of the washing liquid receiving tank 9 so that after the filter cake is washed and before reaching the driving roller pressing section 5, there is enough time for the washing water and the remaining liquid and fine particles in the filter cake to be filtered through the filtering holes to form a filter cake of smaller water content.
The primary filter cake then enters a driving roller press 5, the filter cake formed on a filter belt 7 of the left filter enters a first-stage driving roller press 5, a stacked filter cake is formed at the inlet of the driving roller press, and the stacked filter cake enters a first-stage extrusion dehydration.
The driving roll nip of the belt vibration roll press filter on the left side includes the first squeeze dewatering roll 51 provided on the upper support frame 101 and the second driving motorized roll 52 provided on the lower support frame 102, and the driving roll nip of the belt vibration roll press filter on the right side includes the second squeeze dewatering roll 53 provided on the lower support frame 102 and the first driving motorized roll 54 provided on the upper support frame 101.
The first stage driving roll is composed of a first squeeze-dehydration roll 51 provided on the left side upper support frame 101 and a first driving motorized roll 54 provided on the right side upper support frame 101, the second stage driving roll is composed of a second driving motorized roll 52 provided on the left side lower support frame 102 and a second squeeze-dehydration roll 53 provided on the right side lower support frame 102, the first squeeze-dehydration roll 51 is disposed opposite to the first driving motorized roll 54, the second squeeze-dehydration roll 53 is disposed opposite to the second driving motorized roll 52, a first squeeze gap is formed between the first squeeze-dehydration roll 51 and the first driving motorized roll 54, a second squeeze gap is formed between the filter belt surrounding the left side driving roll nip and the filter belt surrounding the right side driving roll nip, and a third squeeze gap is formed between the second squeeze-dehydration roll 53 and the second driving motorized roll 52.
In this embodiment, the driving wheel of the left filter belt 7 is the second driving motorized pulley 52, the driving wheel of the right filter belt 7 is the first driving motorized pulley 54, and in the width direction of the filter belt 7, the second driving motorized pulley 52 and the first driving motorized pulley 54 respectively adopt special lengthening structures, and the axial length can reach 2-4 meters, so that the width of the filter belt can be increased, and the width of the filter belt can reach 2-4 meters, thereby increasing the filter area and improving the production efficiency.
The lower parts of the bearing seats at the two ends of the first driving motorized pulley 54 and the second driving motorized pulley 52 are respectively provided with a dovetail groove to be connected with the frame, so that the structure is compact, the occupied space is small, and the translation under the pushing of the extrusion cylinder is facilitated. The surface encapsulation of the first and second driven motorized pulley 54, 52 increases the driving friction against the filter belt and also provides a squeeze buffering effect. By carrying out variable frequency speed regulation on the driving motors of the first driving motor-driven roller 54 and the second driving motor-driven roller 52, the running speed of the filter belt can be continuously and randomly regulated between 0.15m/s and 0.5m/s, and the belt speed can be regulated according to different conditions of the filtered slurry so as to achieve the optimal filtering effect.
In the present embodiment, the diameters of the first squeeze-dehydration drum 51, the second squeeze-dehydration drum 53, the first driving motorized pulley 54, and the second driving motorized pulley 52 are the same.
The filter cakes form a stacked filter cake between the first extrusion gaps, the stacked filter cake is sequentially extruded and dehydrated among the first extrusion gaps, the second extrusion gaps and the third extrusion gaps, and the water content in the stacked filter cake is very small after passing through the third extrusion gaps.
A left blow-off pipe 12 for blowing air to the filter belt to separate solid materials from the left filter belt 7 is arranged at the downstream of the second driving motorized pulley 52 and above the left filter belt 7, a right blow-off pipe 13 for blowing air to the filter belt to separate solid materials from the right filter belt 7 is arranged at the downstream of the second squeezing and dewatering pulley 53 and above the right filter belt 7, a filter cake receiving tank for receiving discharged materials is arranged at the lower part of the lower supporting frame 102, and air is blown to a filter cake through the left blow-off pipe 12 and the right blow-off pipe 13 to separate the filter cake from the filter belt 7, and the filter cake falls into the solid material receiving tank. Preferably, a plurality of left-side stripping pipes 12 and right-side stripping pipes 13 are respectively arranged, so that the filter cake is effectively separated from the filter belt 7.
After the filter cake is separated from the filter belt 7, the residual solid materials on the filter belt 7 are few, a pressure spraying cleaning water pipe 11 for cleaning the filter belt 7 is arranged above the lower supporting frame 102, and cleaning water in the cleaning water pipe 11 is sprayed to the filter belt 7 to clean the filter belt, so that the filter belt 7 better enters the next filtering circulation operation, and therefore, the novel belt type vibration rolling filtering device can effectively realize continuous operation.
Preferably, a plurality of cleaning water pipes 11 are provided above the empty stage filter belt of the lower support frame 102.
A blowing cover 14 for blowing air to the filter belt is arranged at the second extrusion gap, the blowing cover 14 is connected to the frame 1, and a compression spring is arranged between the blowing cover 14 to ensure that the blowing cover is tightly attached to the filter belt. The air is blown onto the filter cake at the second extrusion gap formed between the left filter belt and the right filter belt through the air blowing cover 14, thereby accelerating the dehydration of the filter cake and reducing the water content of the filter cake.
The filter cake extruded by the first extrusion gap is subjected to air-pressing and blow-drying, so that liquid in the filter cake can be further discharged, and pore channels in the filter cake can be improved, thereby facilitating the discharge of filtrate when the filter cake is extruded by the third extrusion gap. The filter cake is blown off by adopting the compressed air, so that the slag clamping phenomenon of the filter belt is reduced, and the consumption of cleaning water is reduced.
The whole surface of first extrusion dehydration cylinder 51 is even to distribute there is the through-hole, first extrusion dehydration cylinder 51 has the first fixed hollow axle 55 that does not rotate along with first extrusion dehydration cylinder 51, still be provided with first suction groove 56 on the fixed hollow axle in first extrusion dehydration cylinder 51, in the radial direction of first extrusion dehydration cylinder 51, the bottom and the fixed hollow axle 55 of first suction groove 56 are linked together, the inlet scoop of the other end of first suction groove 56 is close to the internal surface of first extrusion dehydration cylinder 51 and sets up relative first extrusion clearance entrance, be provided with sealed pad between the inlet scoop of first suction groove 56 and the internal surface of first extrusion dehydration cylinder 51, the outer end of first hollow axle 55 has first suction tube 15 through the flange intercommunication, first suction tube 15 links to each other with the automatic drain jar. Ensure the timely discharge of the liquid extruded by the first stage.
The second driving motor-driven roller 52 drives the filter belt to rotate, the filter belt drives the first extrusion dehydration roller 51 to rotate, the first extrusion dehydration roller 51 is connected with the first fixed hollow shaft 55 through a bearing, the first fixed hollow shaft 55 does not rotate, and two ends of the first fixed hollow shaft 55 are fixed on the frame.
In this embodiment, one outer end of the first hollow shaft 55 is connected to the first suction pipe 15, but the present invention is not limited thereto, and one skilled in the art may also separately connect the first suction pipes 15 at two outer ends of the first hollow shaft 55 when the filter belt is too wide.
The second squeeze-dehydration drum 53 has the same structure as the first squeeze-dehydration drum 51, and the second squeeze-dehydration drum 53 is provided with a second fixed hollow shaft 57, a second suction duct 58, and a second suction duct 16, and the second suction duct 16 is connected with an automatic drain cylinder.
In this embodiment, the diameters of the through holes on the surfaces of the first squeezing dewatering drum 51 and the second squeezing dewatering drum 53 are Φ3mm to Φ5mm, the first air suction groove 56 and the second air suction groove 58 are respectively in fan-shaped structures, and the air suction inlet angles of the first air suction groove 56 and the second air suction groove 58 are respectively about 30 degrees.
The center height of the first squeeze dewatering drum 51 is lower than that of the first driving motorized drum 54, the center height of the second squeeze dewatering drum 53 is lower than that of the second driving motorized drum 52, and when the filter cake is squeeze dewatered through the first squeeze gap, water in the filter cake is discharged through the through holes on the surface of the first squeeze dewatering drum 51, the first air suction grooves 56, the first hollow shaft 55 and the first air suction pipe 15 in sequence; when the filter cake is squeezed and dehydrated through the third squeezing gap, water in the filter cake is discharged through the through-holes on the surface of the second squeezing drum 53, the second suction grooves 58, the second hollow shaft 57 and the second suction pipe 16 in this order.
The inlet scoop of first air extraction groove 56 is close to the internal surface of first extrusion dehydration cylinder 51 and sets up relative first extrusion clearance entrance, and when first extrusion dehydration cylinder 51 rotated, first hollow axle 55 and first air extraction groove 56 do not rotate, be favorable to the filtrate to get into in the first air extraction groove 56 relative with first extrusion clearance through the through-hole of first extrusion dehydration cylinder 51 surface entirely, the air extraction area of first air extraction groove 56 is limited to near first extrusion clearance, be provided with the felt sealing pad between the inlet scoop of first air extraction groove 56 and the internal surface of first extrusion dehydration cylinder 51, consequently, need less air extraction volume can produce great vacuum negative pressure, can in time suck the liquid that extrudes into automatic liquid discharge jar, reduce the liquid content of filter cake. Further, the position and angle of the first suction groove 56 may be manually adjusted according to the set position of the first pressing gap.
Similarly, the suction inlet of the second suction groove 58 is close to the inner surface of the second extrusion dehydration roller 53 and is arranged opposite to the inlet of the third extrusion gap, when the second extrusion dehydration roller 53 rotates, the second hollow shaft 57 and the second suction groove 58 do not rotate, so that filtrate can enter the second suction groove 58 opposite to the third extrusion gap through the through holes on the surface of the second extrusion dehydration roller 53, the suction area of the second suction groove 58 is limited to the vicinity of the third extrusion gap, and a felt sealing gasket is arranged between the suction inlet of the second suction groove 58 and the inner surface of the second extrusion dehydration roller 53, so that a large vacuum negative pressure can be generated by needing a small suction amount, the extruded liquid can be sucked into the automatic liquid discharge cylinder in time, and the liquid content of a filter cake is reduced. Further, the position and angle of the second suction groove 58 can be manually adjusted according to the set position of the third pressing gap.
The bearing seats at the two ends of the first main shaft of the first driving motorized pulley 54 are respectively connected with a first air cylinder 18 for pushing the first main shaft to move so as to adjust the extrusion pressure between the first extrusion dewatering pulley 51 and the first driving motorized pulley 54, the bearing seats at the two ends of the second main shaft of the second driving motorized pulley 52 are respectively connected with a second air cylinder 17 for pushing the second main shaft to move so as to adjust the extrusion pressure between the second extrusion dewatering pulley 53 and the second driving motorized pulley 52, the bearing seats at the two ends of the shaft of the tensioning roller 6 of the left belt type vibration rolling filter are respectively connected with a third air cylinder 19 for pushing the tensioning roller shaft to move so as to adjust the tension of the left belt, and the two ends of the shaft of the tensioning roller 6 of the right belt type vibration rolling filter are respectively provided with a fourth air cylinder 20 for pushing the tensioning roller shaft to move so as to adjust the tension of the right belt.
The first driving motorized pulley 54, the second driving motorized pulley 52, and the bearing seat bottom plate of the tensioning roller 6 are respectively connected with the frame through dovetail grooves, and can move relatively in the left-right direction under the pushing of the air cylinder, so as to adjust the extrusion expansion and the tensioning expansion and contraction.
The nip pressure between the first driven motorized pulley 54 and the first squeeze dewatering pulley 51 can be adjusted by operating the first cylinder 18, and the nip pressure between the second driven motorized pulley 52 and the second squeeze dewatering pulley 53 can be adjusted by operating the second cylinder 17; the squeezing pressure determines the pressure on the filter cake and the dewatering effect, and preferably the squeezing pressure between the second driven motorized pulley 52 and the second squeeze dewatering pulley 53 is greater than the squeezing pressure between the first driven motorized pulley 54 and the first squeeze dewatering pulley 51.
The tension of the left filter belt is adjusted by the air pressure control in the third air cylinder 19, and the tension of the right filter belt is adjusted by the air pressure control in the fourth air cylinder 20, preferably, the tension of the left filter belt is the same as the tension of the right filter belt. The air cylinders 19 and 20 supply air through an air pipe, the same pressure control valve 107 controls the air pressure to be the same, and the specifications of the air cylinders 19 and 20 are the same, so that the same tensioning force is ensured.
The layered distributor 2 is a spiral layered distributor, the spiral layered distributor 2 is arranged in a direction which is horizontal and vertical to the filter belt, the spiral layered distributor 2 is a groove body with a wide upper part and a narrow lower part, the upper groove body extends towards the downstream direction of the filter belt relative to the lower groove body, a spiral stirring shaft 21 is arranged in the lower part of the layered distributor 2, the spiral stirring shaft 21 extends along the width direction of the filter belt 7, the direction of an arrow W in fig. 1 is the length direction of the filter belt 7, and the direction which is horizontal and vertical to the length direction of the filter belt 7 is the width direction of the filter belt 7.
The spiral stirring shaft 21 is provided with blades with different rotation directions from the middle position to the two end positions, stirring of slurry materials and uniform distribution to the direction of the width of a filter belt are facilitated, the front end and the rear end of the spiral stirring shaft 21 are arranged on a sliding bearing bush arranged at the inner end part of a lower groove body, one end of the spiral stirring shaft 21 is provided with a coaxial lower chain wheel 22, a motor 23 and a speed reducer are arranged above the upper groove body of the layered distributor, an output shaft of the speed reducer is provided with an upper chain wheel 24, the upper chain wheel 24 and the lower chain wheel 22 are in transmission connection through a chain 25, the driving force of the motor 23 is transmitted to the upper chain wheel 24 through the speed reducer, the upper chain wheel 24 drives the chain 25 to rotate, the chain 25 drives the lower chain wheel 22 to rotate, and the lower chain wheel 22 drives the spiral stirring shaft 21 to rotate. The slurry entering from the middle of the tank body through the feeding pipe 110 is conveyed to the whole length of the tank body under the stirring of the spiral stirring shaft 21, namely, the slurry is uniformly distributed in the direction of the width of the filter belt, and the feeding hole of the feeding pipe 110 is positioned at the middle position of the left side wall or the bottom of the lower tank body.
An upper discharge port extending in the longitudinal direction (i.e., the filter belt width direction) of the spiral stirring shaft 21 is provided on the right side (i.e., the side opposite to the filter belt moving direction) of the upper tank body, an upper discharge guide groove 26 is connected to the upper discharge port, the material discharged from the upper discharge port is discharged onto the filter belt through the upper discharge guide groove 26, a lower discharge port extending in the longitudinal direction of the spiral stirring shaft 21 is provided on the right side (i.e., the side opposite to the filter belt moving direction) of the lower tank body, a lower discharge guide groove 27 is connected to the lower discharge port, the material discharged from the lower discharge port is discharged onto the filter belt through the lower discharge guide groove 27, the height of the lower discharge port is substantially the same as the axial height of the spiral stirring shaft 21, the discharged material is uniformly distributed on the filter belt, the length of the lower discharge port is smaller than the width of the filter belt 7 in the filter belt width direction, and the material discharged from the lower discharge port is discharged onto the filter belt in total, preferably, and the length of the upper discharge port is smaller than the length of the lower discharge port. The thin slurry discharged from the upper discharge port is uniformly distributed on the upper layer of the thick slurry discharged from the lower discharge port. The distance between the upper guide chute and the filter belt is larger than that between the lower guide chute and the filter belt.
In this embodiment, the upper tank body and the lower tank body are integrally formed, and the width of the upper tank body gradually decreases from a position below the upper discharge port of the upper tank body to the lower tank body.
In this embodiment, the upper discharge guide groove is disposed in parallel with the lower discharge guide groove.
The discharge port of the upper discharge guide groove 26 is positioned at the downstream of the discharge port of the lower discharge guide groove 27, coarse particles and floc materials precipitated at the lower part of the groove body are discharged onto the filter belt in advance through the lower discharge guide groove 27 to form a precoat, and unflocted slurry is discharged to the upper part of the filter belt of the precoat through the upper discharge guide groove 26.
The embodiment adopts a spiral layered distributor to utilize the flocculation and gravity self-classification characteristics of slurry, a layer of coarse particles and materials of flocculation substances are discharged on a filter belt in advance to form a precoat filter layer, and then the slurry is discharged on the upper part of the precoat layer for filtering, so that a stable filter cake can be formed, and the impurity content in the filtrate is reduced.
The vibration part 4 includes a high-frequency electromagnetic vibrator 41 mounted on the upper support frame 101, an exciting roller 42 contacting the filter belt 7 is provided on the high-frequency electromagnetic vibrator 41, and a plurality of vibration parts 4 are provided between the guide roller 3 and the driving roller pressing part 5. The high-frequency electromagnetic vibrator 41 vibrates to enable the exciting carrier roller 42 to vibrate up and down, so that the filter belt 7 is driven to vibrate up and down, and dehydration and filtration of slurry materials are accelerated.
The current and frequency of the electromagnetic high-frequency vibration exciter 41 can be continuously adjusted, the amplitude is controlled by adjusting the current, and the frequency is automatically tracked to realize the work in a resonance area, so that the stronger vibration dehydration effect is realized by smaller power consumption. The amplitude is stabilized by adopting a feedback amplitude stabilizing technology and a stepping amplitude limiting technology, and the effects of low energy consumption, stable amplitude and low noise are achieved. A damping rubber plate is arranged between the electromagnetic high-frequency vibration exciter 41 and the frame 1, so that noise is reduced, and frame vibration is reduced.
Under the action of the vibration part 4, the slurry has high dehydration efficiency and high dehydration speed, and creates conditions for washing and re-dehydration of the primary filter cake. The dehydrated primary filter cake can be easily extruded and dehydrated in the next step.
The novel belt type vibration rolling filtering device further comprises an automatic liquid discharge cylinder 103 and a screw air compressor 104 which are matched with auxiliary equipment, wherein the automatic liquid discharge cylinder 103 is respectively connected with the first exhaust pipe 15 and the second exhaust pipe 16, and filtrate discharged through the first exhaust pipe 15 and the second exhaust pipe 16 is discharged after being discharged to the automatic liquid discharge cylinder 103.
The screw air compressor 104 is connected with the automatic liquid discharge cylinder 103, and the screw air compressor 104 is also provided with a first air pipe connected with the first air cylinder 18, a second air pipe connected with the second air cylinder 17, a third air pipe connected with the third air cylinder 19 and the fourth air cylinder 20, a fourth air pipe connected with the blowing hood 14 and a fifth air pipe connected with the right blowing pipe 13 of the left blowing pipe 12.
The screw air compressor 104 provides air pressure to the first air cylinder 18 through a first air pipe to push the first air cylinder 18 to move, and a first numerical control pressure control valve 106 is arranged on the first air pipe and used for regulating and controlling the air pressure and controlling the pressure in the first air cylinder 18.
The screw air compressor 104 provides air pressure for the second air cylinder 17 through a second air pipe to push the second air cylinder 17 to move, and a second digital control pressure control valve 105 is arranged on the second air pipe and used for regulating and controlling the air pressure and controlling the pressure in the second air cylinder 17. By the adjustment of the first digitally controlled pressure control valve 106 and the adjustment of the second digitally controlled pressure control valve 105, the squeezing pressure between the second squeeze dewatering drum 53 and the second driven motorized drum 52 is controlled to be greater than the squeezing pressure between the first squeeze dewatering drum 51 and the first driven motorized drum 54.
Preferably, the wind pressures in the first cylinder 18 and the second cylinder 17 can be continuously adjusted between 0.4 MPa and 0.8MPa through pressure control valves respectively.
The screw air compressor 104 provides air pressure for the third air cylinder 19 and the fourth air cylinder 20 through a third air pipe, pushes the third air cylinder 19 and the fourth air cylinder 20 to move, and a third numerical control pressure control valve is arranged on the third air pipe and used for regulating and controlling the air pressure and the tension force, so that the pressure in the third air cylinder 19 and the pressure in the fourth air cylinder 20 are the same, and the tension force of the left filter belt and the tension force of the right filter belt are the same.
The bottoms of bearing seats at two ends of a main shaft of the tensioning roller 6 are provided with dovetail grooves which are connected with the frame, and the third air cylinder 19 and the fourth air cylinder 20 respectively realize tensioning of the left filtering belt and the right filtering belt by pushing the tensioning roller 6 to translate so as to ensure the stable operation of the filtering belts. In the embodiment, the tension force of the tension roller 6 on the filter belt can be adjusted at will between 2kN/m and 5 kN/m.
The tensioning roller 6 has the functions of tensioning the filter belt and redirecting the filter belt, so that the structure of the invention is simpler and more compact.
The screw air compressor 104 supplies air to the blowing hood 14 through a fourth air pipe, a common pressure flow control valve 107 is arranged on the fourth air pipe for controlling air pressure and exhaust amount, and an air pipe interface 141 for connecting with the fourth air pipe is arranged on the blowing hood 14; the screw air compressor 104 supplies air to the right side blow-off pipe 13 of the left side blow-off pipe 12 through a fifth air pipe, and a common pressure flow control valve is arranged on the fifth air pipe and used for controlling air pressure and air exhaust amount. A pressure spring is arranged between the blowing cover and the frame, so that the blowing cover is tightly attached to the filter belt, and the air leakage around the blowing cover is reduced.
Preferably, the pressure in the first cylinder 18 is made greater than the pressures in the third cylinder 19 and the fourth cylinder 20 by numerical control pressure control valve regulation.
Therefore, air sucked from the first and second squeeze-and-dewater cylinders 51 and 53 by the screw air compressor 104 provides wind pressure to the first, second, third and fourth cylinders 18, 17, 19 and 20 on one hand, and fully exerts its dynamic action, filtrate sucked through the first and second suction pipes 15 and 16 enters the automatic discharge cylinder 103 to be discharged, and air enters the screw air compressor 104 to generate pressure wind; on the other hand, the air blowing cover 14 and the right side air stripping pipe 13 of the left side air stripping pipe 12 are supplied with air, and the exhaust pressure and the exhaust amount are regulated through a common pressure flow valve, so that the balance of the exhaust air amount and the exhaust air amount of the screw air compressor 104 is ensured.
The upper support frame 101 is further provided with a plurality of deflection-preventing carrier rollers 108 for preventing deflection of the filter belt between the guide roller 3 and the driving roller pressing part 5, and the lower support frame 102 is further provided with a plurality of flat carrier rollers 109 for supporting the filter belt 7 between the driving roller pressing part 5 and the tensioning roller 6.
The two ends of the guide roller 3 are provided with guide discs which are larger than the diameter of the guide roller 3 and have a certain inclination and are used for correcting the position of the filter belt. The two ends of the first squeezing dewatering roller 51 and the second squeezing dewatering roller 53 are respectively provided with a guiding disc which has a diameter larger than that of the squeezing roller and a certain inclination and is used for correcting the position of the filter belt, the filter belt is sequentially guided and corrected, and meanwhile, the function of preventing the squeezing filtrate from leaking along the axial direction of the roller is achieved. The rotation speed of the guide disc is the same as that of the filter belt, so that the filter belt is prevented from being rubbed, folded, torn and the like. The rotation speed of the filter belt of the left belt type vibration rolling filter is the same as that of the filter belt of the right belt type vibration rolling filter.
In this embodiment, the two ends of the tensioning roller 6 are also respectively provided with a guiding disc to prevent the filter belt from deviating.
In this embodiment, the first driving motorized pulley 54 and the second driving motorized pulley 52 are respectively frequency-controlled to continuously adjust the belt speed between 0.15 to 0.5 m/s. The two driving wheels adopt a set of variable-frequency speed regulating system so as to ensure the speed synchronization of the left filter belt and the right filter belt.
The surfaces of the guide roller 3, the exciting roller 42, the tensioning roller 6, the first driving motorized pulley 54 and the second driving motorized pulley 52 are respectively provided with rubber layers, and the rubber layers have vibration reduction and buffering effects. The surface of the anti-deflection carrier roller 108 and the surface of the flat carrier roller 109 are coated with an anti-adhesive layer to prevent slurry from being adhered.
In the embodiment, the filter belt 7 adopts a polypropylene woven net, the wire diameter and the aperture can be selected according to different slurry and filter cake thickness of filtration, and the filter belt can be formed into an annular belt through thermal welding or direct weaving, so that the joint is ensured to be uniformly stressed and connected smoothly.
In this example, both the washing shower water and the empty Duan Lvbu rinse water are supplied by shop pressure water, requiring a water pressure of at least 0.25MPa. The three structures of the washing spray pipe, the empty section filter belt cleaning water pipe and the blowing pipe are the same.
In this embodiment, the bearings of the first driving motorized pulley 54, the second driving motorized pulley 52, the first squeeze dewatering pulley 51, the second squeeze dewatering pulley 53, the tension pulley 6, the guide pulley 3, the deflection preventing pulley 108, the flat pulley 109, and the exciting pulley 42 are sealed bearings to prevent mud from entering.
In this embodiment, the left side frame and the right side frame are respectively welded by square steel, and are connected by bolts or welding after installation and adjustment. Has higher strength and vibration resistance.
In the embodiment, the device is also provided with a centralized control operation console for program control, remote control can be realized, and an emergency protection power-off switch is arranged on the rack, so that emergency shutdown of accidents can be realized.
If the novel belt type vibration rolling filter device is used for filtering and dehydrating slurry with high pH value, all parts are required to be subjected to corrosion prevention design and corrosion prevention treatment.
During operation, the concentrated slurry and flocculant enter the spiral layered distributor 2 from the middle part of the distributor trough body, are mixed and stirred by the spiral stirring shaft 21 and are conveyed to the width direction of the filter belt, the coarse particles and the floccule materials at the lower part are uniformly distributed on the filter cloth 7 through the lower discharge port and the lower discharge guide chute 27 of the spiral layered distributor 2 in sequence, and the coarse particles and the floccule materials are distributed along the width direction of the filter belt 7 to form a precoat filter layer; the fine particles and the unoccupied flocculated sludge are discharged onto the filter cloth 7 via an upper discharge opening and an upper discharge chute 26 in sequence and are located above the "precoat" of the coarse material layer.
The slurry continuously moves forwards on the filter belt 7 under the drive of the driving roller, the filter cloth 7 and the slurry vibrate up and down in a high frequency and small amplitude under the drive of the high frequency electromagnetic vibrator 41 and the exciting carrier roller 42, and the liquid is discharged to the outside of the filtrate receiving tank 8 through the precoated filter layer and the filter belt 7 under the action of vibration force and gravity.
The filter cake after preliminary dehydration is washed by spraying water through a washing water pipe 10, and then the washing liquid is removed by vibration dehydration (washing without spraying water through the washing water pipe 10 is not needed), and the washing liquid enters a washing liquid receiving tank 9 and is discharged.
The primary filter cakes after washing on the left filter belt and the right filter belt are overlapped with the filter belt 7 at the joint of the first extrusion dehydration roller 51 and the first driving electric roller 54, and the first driving electric roller 54 is pushed by the pressure of the first air cylinder 18 connected to the bearing seats at the two ends of the main shaft to extrude the filter cakes to the first extrusion dehydration roller 51, so that the filter cakes are compressed and dehydrated.
The extruded filtrate is accumulated in a filter cake between a left filter belt and a right filter belt in front of a contact line of the first extrusion dehydration roller 51 and the first driving electric roller 54, drips onto the surface of the first extrusion dehydration roller 51, liquid sequentially enters an automatic liquid discharge cylinder 103 through a through hole on the surface of the first extrusion dehydration roller 51, a first air suction groove 56 fixed in the first extrusion dehydration roller 51, a first hollow shaft 55 and a first air suction pipe 15 under the suction effect of a screw air compressor 104, filtered (washed) liquid is discharged, air enters the screw air compressor 104 to be compressed, and compressed air power is provided for the first air cylinder 18, the second air cylinder 17, the third air cylinder 19 and the fourth air cylinder 20, and meanwhile air is supplied to and discharged from the air blowing cover 14, the left blowing pipe 12 and the right blowing pipe 13.
Then, the filter cake is carried by the two filter belts to move to a third extrusion gap between the second extrusion dehydration roller 53 and the second driving electric roller 52, and is blown to dry by wind through the blowing cover 14, part of liquid in the filter cake can be discharged, and then dehydrated through the second extrusion dehydration roller 53, the extruded liquid enters the automatic liquid discharge cylinder 103 through the through holes on the surface of the second extrusion dehydration roller 53, the second air suction groove 58 fixed in the second extrusion dehydration roller 53, the second hollow shaft 57 and the second air suction tube 16, the filtered (washed) liquid is discharged, the wind enters the screw air compressor 104 to be compressed, and the wind provides wind pressing power for the first air cylinder 18, the second air cylinder 17, the third air cylinder 19 and the fourth air cylinder 20, and simultaneously supplies wind to the blowing cover 14, the left blowing pipe 12 and the right blowing pipe 13 for discharging.
Subsequently, after the two filter belts are separated, the filter cake is blown off by the left-side blow-off pipe 12 and the right-side blow-off pipe 13, and after the filter cake is separated from the filter belts, the filter cake falls into a receiving tank (or receiving conveyor belt) at the lower part.
The empty section filter belt after unloading is subjected to water spraying cleaning through a cleaning water pipe 11, is regulated by a tensioning roller 6 and a guide roller 3, and then enters the next circulation operation.
The left and right filtering belts of the invention bear mud load and are overlapped when entering into rolling, thus forming thicker filter cake, less abrasion of the filtering belts and high utilization efficiency. The invention has the advantages that the structure of the left and right driving roller pressing parts is simple, the winding times are less, the belt can run at higher belt speed, and the productivity and the efficiency can be improved.
The filter belt joint is uniformly stressed and is connected smoothly; the spiral layered distributor is used for ensuring uniform feeding and avoiding generating unbalanced load; the numerical control pressure control valve is used for ensuring that the air pressures of the air cylinders at the two ends of the main shafts of the first driving electric roller, the second driving electric roller, the left tensioning roller and the right tensioning roller are the same and the strokes are synchronous; therefore, the filter belt can be ensured not to deviate and stably run.
The slurry is uniformly distributed on an annular filter belt through a layered distributor, a primary filter cake is formed through gravity and vibration dehydration, and then the filter cake is formed through first extrusion dehydration, compressed air blow-drying and second extrusion dehydration, so that the liquid content of the filter cake is gradually reduced, and the purpose of solid-liquid separation is achieved.
Finally, what should be said is: the above embodiments are only for illustrating the technical solution of the present invention, and any equivalent replacement of the present invention and modification or partial replacement without departing from the spirit and scope of the present invention should be covered in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a novel belt vibration roll-in filter, a serial communication port, including controlling the belt vibration roll-in filter that sets up relatively, belt vibration roll-in filter respectively includes the frame, the frame includes upper support frame and lower support frame that the level set up, upper end of upper support frame is provided with the layering distributing device, along the flow direction of material, guide roll has been set gradually on the frame, vibration portion, drive roll-in portion and tensioning roller, around the guide roll on the frame, vibration portion, drive roll-in portion and tensioning roller's surface is provided with the annular filter belt, layering distributing device thick liquids evenly arrange on the filter belt, upper support frame upper end below is provided with the filtrate receiving tank that is used for receiving the filtrate, upper support frame lower extreme below is provided with the washing liquid receiving tank that is used for receiving the washing liquid, the lower extreme of filtrate receiving tank is connected with the same position of upper support frame middle part of washing liquid receiving tank, be provided with the washing water pipe that is used for the washing material in the top of filter belt, be equipped with the pressure shower that is used for wasing the filter belt respectively in upper and lower support frame's top, left and right filter belt's empty section upper portion;
The driving roller press part of the belt type vibration roller press filter positioned at the left side comprises a first extrusion dehydration roller arranged on an upper supporting frame and a second driving electric roller arranged on a lower supporting frame, the driving roller press part of the belt type vibration roller press filter positioned at the right side comprises a second extrusion dehydration roller arranged on the lower supporting frame and a first driving electric roller arranged on the upper supporting frame, the first extrusion dehydration roller is oppositely arranged with the first driving electric roller, the second extrusion dehydration roller is oppositely arranged with the second driving electric roller, a first extrusion gap is formed between the first extrusion dehydration roller and the first driving electric roller, a second extrusion gap is formed between a filter belt surrounding the left side driving roller press part and a filter belt surrounding the right side driving roller press part, a third extrusion gap is formed between the second extrusion dehydration roller and the second driving electric roller, an included angle between a main shaft connecting line of the extrusion dehydration roller and the driving electric roller and a horizontal line is 40-50 degrees, and an included angle between the overlapping part of the left filter belt and the right filter belt and the horizontal line is 40-50 degrees.
2. The novel belt type vibration-rolling filtration device according to claim 1, wherein a left-side blow-off pipe for blowing air to the filter belt to separate solid materials from the left-side filter belt is provided at the downstream of the second driving motor drum and above the left-side filter belt, a right-side blow-off pipe for blowing air to the filter belt to separate solid materials from the right-side filter belt is provided at the downstream of the second squeezing dehydration drum and above the right-side filter belt, and a cake receiving tank for receiving solid materials is provided at the lower side of the lower support frame corresponding to the cake discharge position.
3. The novel belt type vibration rolling filter device according to claim 2, wherein a blowing cover for blowing air to the filter cake is arranged at the overlapping part of the left filter belt and the right filter belt between the two-stage extrusion dehydration devices, the blowing cover is connected to the frame, and a spring is arranged between the blowing cover and the frame to ensure that the blowing cover is pressed against the filter belt.
4. The novel belt type vibration roll-in filtering device according to claim 3, wherein through holes are uniformly distributed on the surface of the first extrusion dehydration roller, the first extrusion dehydration roller is provided with a first fixed hollow shaft which does not rotate along with the first extrusion dehydration roller, a first air suction groove is further formed in the inner fixed center shaft of the first extrusion dehydration roller, the bottom end of the first air suction groove is communicated with the first hollow shaft in the radial direction of the first extrusion dehydration roller, an air suction opening at the other end of the first air suction groove is close to the inner surface of the first extrusion dehydration roller and is arranged at an inlet of a gap relative to the first extrusion dehydration roller, a sealing gasket is arranged between an air suction opening of the first air suction groove and the inner surface of the first extrusion dehydration roller, the outer end of the first hollow shaft is communicated with a first air suction pipe, the second extrusion dehydration roller is identical to the first extrusion dehydration roller in structure, a second fixed hollow shaft, a second air suction groove and a second air suction pipe are formed in the inner fixed center shaft, the center height of the first extrusion dehydration roller is lower than the center height of the first drive motor-driven roller, and the center height of the second extrusion dehydration roller is lower than the center height of the second drive motor-driven roller.
5. The novel belt type vibration rolling filter device according to claim 4, wherein the bearing seats at both ends of the first main shaft of the first driving motorized pulley are respectively connected with a first cylinder for pushing the first main shaft, the bearing seats at both ends of the second main shaft of the second driving motorized pulley are respectively connected with a second cylinder for pushing the second main shaft, the bearing seats at both ends of the shaft of the tensioning roller of the belt type vibration rolling filter at the left side are respectively connected with a third cylinder for pushing the tensioning roller shaft, and the bearing seats at both ends of the shaft of the tensioning roller of the belt type vibration rolling filter at the right side are respectively connected with a fourth cylinder for pushing the tensioning roller shaft; the bottom plates of the main shaft bearing seats at the two ends of the driving motor-driven roller are provided with dovetail grooves which are connected with the frame; the bottom plates of the main shaft bearing seats at the two ends of the tensioning roller are provided with dovetail grooves which are connected with the dovetail grooves on the frame.
6. The novel belt type vibration roller press filtering device according to claim 5, wherein a layered distributor is arranged in a direction which is horizontally perpendicular to the width of the filtering belt, the layered distributor is a groove body with a wide upper part and a narrow lower part, the upper groove body is extended towards the downstream direction of the filtering belt relative to the lower groove body, a spiral stirring shaft is arranged in the lower part of the layered distributor, the spiral stirring shaft extends along the width direction of the filtering belt, the spiral stirring shaft is provided with blades with different rotation directions from the middle position to the two end positions, two ends of the spiral stirring shaft are arranged on sliding bearing bush seats arranged at the inner end part of the lower groove body, one end of the spiral stirring shaft is provided with a coaxial lower sprocket, a motor and a speed reducer are arranged above the upper groove body of the layered distributor, an output shaft of the speed reducer is provided with an upper sprocket, the upper sprocket and the lower sprocket are in transmission connection through a chain, one side of the upper groove body relative to the moving direction of the filtering belt is provided with an upper discharge opening extending along the length direction of the spiral stirring shaft, the upper discharge opening is connected with the upper discharge opening along the width direction of the filtering belt, the two ends of the spiral stirring shaft are arranged on the sliding bearing bush seats arranged at the end part of the lower groove body, the length of the discharge opening is smaller than the length of the discharge opening of the lower part is arranged along the length of the lower discharge opening is smaller than the length of the lower discharge opening.
7. The novel belt type vibration-rolling filtering device according to claim 6, wherein the vibration part comprises a high-frequency electromagnetic vibrator arranged on the upper supporting frame, an excitation carrier roller in contact with the filtering belt is arranged on the high-frequency electromagnetic vibrator, a plurality of vibration parts are arranged between the guide roller and the driving roller pressing part, and a vibration-isolating rubber damping block is arranged between the high-frequency vibration and the frame.
8. The novel belt type vibration rolling filtering device according to claim 7, further comprising an automatic liquid discharge cylinder and a screw air compressor which are matched with auxiliary equipment, wherein the automatic liquid discharge cylinder is connected with the first exhaust pipe and the second exhaust pipe respectively, the screw air compressor is connected with the automatic liquid discharge cylinder, the screw air compressor is further provided with a first air pipe connected with the first air cylinder, a second air pipe connected with the second air cylinder, a third air pipe connected with a fourth air pipe of the third air cylinder and a fourth air pipe connected with a blowing hood, and a fifth air pipe connected with a right blowing pipe of the left blowing pipe, numerical control pressure control valves are respectively arranged on the first air pipe, the second air pipe and the third air pipe, common pressure flow control valves are respectively arranged on the fourth air pipe and the fifth air pipe, and the extrusion pressure between the second extrusion dehydration roller and the second driving electric roller is larger than that between the first extrusion dehydration roller and the first driving electric roller.
9. The novel belt type vibration roller press filter device according to any one of claims 1 to 8, wherein a plurality of deflection preventing carrier rollers for preventing deflection of the filter belt are further arranged between the guide roller and the driving roller press part on the upper support frame, and discs which have diameters larger than the diameter of the carrier rollers and have a certain inclination and are used for correcting the positions of the filter belt are arranged at two ends of the deflection preventing carrier rollers; the two ends of the guide roller, the first extrusion dehydration roller and the second extrusion dehydration roller are respectively provided with a disc with a diameter larger than the diameter of the roller and a certain inclination for correcting the position of the filter belt, the rotation linear speed of the disc is the same as the movement speed of the filter belt, the movement speed of the filter belt of the belt type vibration rolling filter on the left side is the same as the movement speed of the filter belt of the belt type vibration rolling filter on the right side, and a plurality of flat carrier rollers for supporting the filter belt are arranged between the driving rolling part and the tensioning roller on the lower supporting frame; the electric roller is driven to realize variable frequency speed regulation so as to realize continuous speed regulation between the horizontal movement speed of the filter belt and 0.15 m/s-0.5 m/s.
10. The novel belt type vibration roller press filter device according to claim 9, wherein rubber layers are respectively arranged on the surfaces of the guide roller, the exciting roller, the tensioning roller, the first driving motor-driven roller and the second driving motor-driven roller, the rubber layers of the driving motor-driven rollers are used for increasing the friction driving force of the driving filter belt, and the mesh grooves are formed in the rubber layers so as to facilitate timely discharge of liquid to two ends and the lower part.
CN201810159036.2A 2018-02-26 2018-02-26 Novel belt vibration roll-in filter equipment Active CN108211478B (en)

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CN201810159036.2A CN108211478B (en) 2018-02-26 2018-02-26 Novel belt vibration roll-in filter equipment

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