CN113896398A - Sludge high-pressure belt type deep dehydrator and application method thereof - Google Patents
Sludge high-pressure belt type deep dehydrator and application method thereof Download PDFInfo
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- CN113896398A CN113896398A CN202111219853.0A CN202111219853A CN113896398A CN 113896398 A CN113896398 A CN 113896398A CN 202111219853 A CN202111219853 A CN 202111219853A CN 113896398 A CN113896398 A CN 113896398A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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Abstract
The invention provides a sludge high-pressure belt type deep dehydrator which comprises a main body frame, an upper filter belt and a lower filter belt, wherein a feeding module, a filter pressing module and a discharging module are arranged in the main body frame; the feeding module comprises a uniform distribution mechanism, the uniform distribution mechanism is arranged above the lower filter belt, and a feeding hole is formed above the uniform distribution mechanism; the filter pressing module comprises a press roller and a pressing mechanism, and the pressing mechanism comprises a low-pressure area and a high-pressure area; a plurality of press rolls are distributed in the low-pressure area and the high-pressure area, the press roll with large roll diameter and the press roll with small roll diameter are both arranged in the filter pressing module through bearings, and the upper filter belt and the lower filter belt are respectively wound on the press rolls, the press rolls with large roll diameter and the press rolls with small roll diameter; the discharging module comprises a discharging device and a washing mechanism, and the working surface of the washing mechanism is covered with the working surfaces of the upper and lower filter belts. The invention solves the problems of complex process flow, poor dehydration effect, low sludge treatment capacity, high investment cost, high labor cost and high operation cost of the existing sludge dehydration equipment.
Description
Technical Field
The invention relates to a sludge high-pressure belt type deep dehydrator, in particular to a sludge high-pressure belt type deep dehydrator and an application method thereof.
Background
With the acceleration of the urbanization process and the continuous improvement of the living standard of people, the public pays more and more attention to the environmental problem and the requirement on the environmental quality is gradually improved, a centralized urban domestic sewage treatment plant is built in most cities in China, however, the sewage treatment technology transfers a large amount of pollutants in sewage to residual sludge, the sludge yield of the sewage treatment plant is increased sharply, and the water pollution problem is converted into the treatment problem of solid waste.
Sludge dewatering actually refers to the removal of interstitial water from sludge. The interstitial water is theoretically easy to remove, but because the sludge is formed by the aggregation of flocculent colloids, the particles are fine and soft, and because the soft particles have certain compressibility, when external force is increased, the particles form a layer of 'film' with very small gaps on the surface of the filter medium, so that water is difficult to pass through, and the dehydration is extremely difficult. The thermal refining treatment of the sludge is a key link of sludge dehydration. The conditioning treatment is to destroy the colloidal structure of the sludge, reduce the affinity between sludge and water, release intracellular water and improve the dehydration performance of the sludge.
The deep sludge dewatering refers to a process of reducing the water content of sludge cakes after sludge dewatering to below 60% by performing conditioning treatment on sludge after primary dewatering and then performing secondary high-pressure dewatering and the like, so that the volume can be reduced by more than 50%, and more importantly, the subsequent treatment and disposal routes of the sludge can be wider.
The existing sludge dewatering method mainly comprises the following steps: natural drying, mechanical dehydration and heat drying. The natural drying is a dehydration method for evaporating water in primary dehydrated sludge by utilizing natural conditions such as light, wind and the like, and the method has obvious advantages, simple operation and low cost, but has a plurality of defects, such as low dehydration efficiency, large floor area, easy generation of odor to cause secondary pollution and the like, and is only suitable for specific occasions; the heat drying method can reduce the water content of the sludge to be below 20 percent, but the application of the heat drying method is limited due to large energy consumption and high requirement on equipment; the mechanical dehydration is widely applied to sludge dehydration due to simple operation, high dehydration speed, good effect and low energy consumption, and is the most common dehydration method for sewage treatment.
Disclosure of Invention
The invention aims to provide a sludge high-pressure belt type deep dehydrator which adopts a modular design, has the functions of functional zoning, automatic cleaning, automatic oil injection, synchronous tensioning, intelligent speed regulation, uniform distribution and the like, and can solve the problems of complex process flow, poor dehydration effect, low sludge treatment capacity, high investment cost, high labor cost and high operation cost of the conventional sludge dehydration equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sludge high-pressure belt type deep dehydrator comprises a main body frame, an upper filter belt and a lower filter belt, wherein a feeding module, a filter pressing module and a discharging module are arranged in the main body frame, and the filter pressing module is arranged between the feeding module and the discharging module; the filter pressing module comprises a pressing roller and a squeezing mechanism, a feeding module is arranged on one side of the filter pressing module and comprises a uniform distribution mechanism, the uniform distribution mechanism is arranged above the lower filter belt, and a feeding hole is formed above the uniform distribution mechanism; a discharging module is arranged on one side of the filter pressing module and comprises a driving device, a discharging device and a flushing mechanism; go up the filter belt in proper order around establishing on compression roller, squeezing mechanism and drive arrangement, down the filter belt in proper order around establishing on the drive arrangement in equipartition mechanism below, compression roller, squeezing mechanism and ejection of compact module, and go up the filter belt and filter belt down and laminate mutually and establish on big roller footpath compression roller and little roller footpath compression roller in squeezing mechanism, the working face that washes the mechanism covers mutually with last filter belt and lower filter belt respectively, realizes carrying out the moisture filtering to filter belt surface and inside through washing the mechanism to discharge mud through discharging device.
Preferably, the press mechanism comprises a low pressure zone and a high pressure zone; the low-pressure zone has a plurality of compression rollers with high-pressure area internal distribution, the low-pressure zone is equipped with an at least big roller footpath compression roller, the high-pressure zone is equipped with five at least small roll footpath compression rollers, big roller footpath compression roller and small roll footpath compression roller all set up in filter-pressing module through the bearing, go up the filter belt and down the filter belt respectively around establishing on compression roller, big roller footpath compression roller and small roll footpath compression roller, and go up the filter belt and laminate mutually in squeezing mechanism with lower filter belt and establish on big roller footpath compression roller and small roll footpath compression roller around.
Preferably, the press mechanism further comprises a counter-pressing area, the counter-pressing area comprises a counter-pressing roller, and the counter-pressing roller is tangent to the small-diameter pressing roller of the high-pressure area in a fixed or telescopic mode to realize the pressing of the filter belt.
Preferably, the flushing mechanism comprises a cleaning device and a drying device, the working surface of the flushing mechanism covers the working surfaces of the upper filter belt and the lower filter belt, the filter belts are flushed through the cleaning device and the drying device, the surfaces and the insides of the flushed filter belts are subjected to moisture filtering, the cleaning device is connected with the straight discharge device to discharge sewage, and the filter-pressed sludge is discharged through the discharging device.
Preferably, the drying device comprises at least two groups of hairbrushes, the hairbrushes are fixed on the main body frame, the brush heads of the hairbrushes are tightly attached to the working surfaces of the upper filter belt and the lower filter belt respectively, and the surfaces and the insides of the washed filter belts are filtered through the brush heads of the hairbrushes.
Preferably, the belt cleaning device who washes the mechanism includes water inlet and delivery port, belt cleaning device's delivery port is equipped with self-cleaning mechanism through quick-operation adapter connection, self-cleaning mechanism includes a plurality of hoses and a plurality of water collector, the water collector sets up the below at big roller footpath compression roller and little roller footpath compression roller respectively, direct row is connected to quick-operation adapter's one end, quick-operation adapter's the other end passes through the water collector and connects the water collector communicating pipe.
Preferably, at least two groups of tensioning mechanisms are arranged in the main body frame, and the two groups of tensioning mechanisms are respectively arranged above the squeezing mechanism and below the uniform distribution mechanism of the filter pressing module.
Preferably, drive arrangement includes gear motor and two upper and lower drive rollers, go up the drive roller and be connected with lower drive roller meshing, go up the cassette tape and twine respectively on last drive roller and lower drive roller with lower cassette tape, gear motor drives through transmission and goes up the drive roller meshing and drive the drive roller down and carry out variable-speed rotation.
Preferably, one side of the squeezing mechanism is provided with a deviation rectifying mechanism, one side of the deviation rectifying mechanism, which is far away from the squeezing mechanism, penetrates through the main frame and extends to the outside of the main frame, and the deviation rectifying mechanism rectifies the position deviation of the pressing and winding of the upper filter belt and the lower filter belt.
The invention also provides an application method of the sludge high-pressure belt type deep dehydrator, which comprises the following steps:
s1, winding the upper filter belt in the filter pressing module and the discharging module, namely winding the upper filter belt on the upper driving roller of the pressing roller, the large-roller-diameter pressing roller, the small-roller-diameter pressing roller, the tensioning mechanism in the filter pressing module and the driving device in sequence; the lower filter belt is sequentially wound in the feeding module, the filter pressing module and the discharging module, namely the lower filter belt is sequentially wound on a tensioning mechanism, a compression roller, a large-roller-diameter compression roller, a small-roller-diameter compression roller and a lower driving roller of a driving device which are arranged below the uniformly distributed mechanism in the feeding module; the upper filter belt and the lower filter belt are jointed and wound on the large-roller-diameter press roller and the small-roller-diameter press roller in a pressing mechanism, so that one outer side of the upper filter belt and one outer side of the lower filter belt are in a state of being tightly jointed up and down in the low-pressure area and the high-pressure area;
s2, feeding through the feeding hole, and uniformly paving the sludge on the lower filter belt on the filter belt through the uniform distribution mechanism below the feeding hole to ensure that the sludge and the filter belt are uniformly stressed;
s3, driving the filter screen by a driving device, wherein the driving device drives the driving roller to work, so that the upper filter belt wound on the driving roller winds along the winding track, and the lower filter belt on the lower driving roller meshed with the upper driving roller also winds along the winding track synchronously; when the sludge is wound, the upper filter belt is used for tensioning a tensioning mechanism in the filter module, the lower filter belt is used for tensioning the lower filter belt through the tensioning mechanism in the feeding module and is self-locked through arranging a gear and rack meshing mechanism on the tensioning mechanism respectively, the lower filter belt conveys the sludge into a squeezing mechanism which is pressed with the upper filter belt through winding, compression rollers with different roller diameters arranged in the squeezing mechanism realize pressure increment on the part where the upper filter belt and the lower filter belt are pressed, and the sludge between the upper filter belt and the lower filter belt is dewatered in a pressing or continuous pressing mode;
s4, respectively washing and drying the working surfaces of the upper filter belt and the lower filter belt by using a washing mechanism, and avoiding the influence on the sludge dewatering effect caused by the water adhered to the upper filter belt entering the sludge;
s5: the flushing water of the automatic cleaning structure is utilized to automatically clean the water receiving tray, so that the cleanness of the water receiving tray is ensured.
Compared with the prior art, the invention has the following beneficial effects:
1. through mechanical high-pressure dehydration of the conditioned sludge, the moisture content of the primarily dehydrated sludge can be reduced to 40-70%, the treatment effect is remarkable, the operation cost is low, the dehydrated sludge is flaky or powdery, is not reduced when meeting water, the low-grade heat value is improved, and the subsequent treatment is facilitated.
2. The press rolls with different roll diameters are arranged to realize pressure increasing, a mode of opposite pressure or continuous opposite pressure is adopted, the limit dehydration capacity of the equipment is improved, the sludge distributing machine is adopted to evenly distribute the sludge between the upper filter belt and the lower filter belt, the stress of the sludge and the filter belts is even, the sludge dehydration effect is improved, and the operation loss of the filter belts is reduced.
3. Adopt modes such as air suction or brush filtration moisture, improve washing, the drying of filter belt, avoid being stained with the moisture in area and getting into mud on the filter belt, influence sludge dewatering effect.
4. The appearance of the invention adopts a Z-shaped design, thus greatly reducing the occupied area and being beneficial to the elevation connection of equipment; adopts a totally-enclosed structure, is beautiful and sanitary, and is beneficial to gas collection.
5. The self-cleaning structure of the water receiving tray is arranged, filter belt flushing water is utilized to drive filtrate in the water receiving tray to flow rapidly, so that the water receiving tray always keeps liquid flowing, and the phenomenon that filter pressing overflows due to the formation of sediment is avoided.
6. Due to the modular design, the function partition can be realized, and the operation and maintenance cost is saved.
7. Meanwhile, the synchronous tensioning mechanism for the gear and the rack of the compression roller realizes self-locking to a certain degree after the filter belt is tensioned, and the more stable deviation rectifying effect is realized by the cooperation of the gear and the baffle.
The invention adopts the modularized design and the function zoning, can realize the functions of automatic cleaning, automatic oil injection, synchronous tensioning, intelligent speed regulation, uniform material distribution and the like, and can solve the problems of complex process flow, poor dehydration effect, low sludge treatment capacity, high investment cost, high labor cost and high operation cost of the conventional sludge dehydration equipment.
Drawings
FIG. 1 is a schematic structural view of a sludge high-pressure belt type deep dehydrator provided by the invention;
FIG. 2 is a schematic structural view of a material uniform distribution device in the sludge high-pressure belt type deep dehydrator, which is provided by the invention;
FIG. 3 is a schematic view of a part of the structure of a spreading roller of the material uniform distribution device in FIG. 2 in a spiral belt type;
FIG. 4 is a partial structural schematic view of the spreading roller of the material uniform distribution device in FIG. 2 in a screw type;
FIG. 5 is a schematic view of a part of the structure of the material uniform distribution device in FIG. 2 when the return roll is in an anchor type;
FIG. 6 is a schematic view of a partial structure of the frame-type material uniformly distributing device in FIG. 2;
FIG. 7 is a schematic structural view of an extrusion-molding uniform distribution device in a sludge high-pressure belt type deep dehydrator, which is provided by the invention;
FIG. 8 is a partial schematic structural view of a fixed counter-pressure mode of a counter-pressure area in the high-pressure belt type deep dewatering machine for sludge according to the present invention;
FIG. 9 is a partial structural schematic diagram of the adjustable counter pressure mode of the counter pressure area in the sludge high-pressure belt type deep dehydrator provided by the invention.
The numbers in the figure are as follows:
1. a main body frame; 2. a tensioning mechanism; 3. a drive device; 4. a uniform distribution mechanism; 5. a squeezing mechanism; 6. a deviation rectifying mechanism; 7. a flushing mechanism; 8. an automatic cleaning mechanism; 9. a baffle plate; 10. a water pan; 11. a water pan communicating pipe; 12. an oil storage tank; 13. a dispenser; 14. a liquid level meter; 15. a displacement sensor; 16. an on-line weighing system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1, the sludge high-pressure belt type deep dehydrator provided by the invention comprises a main body frame 1, an upper filter belt and a lower filter belt, wherein a feeding module, a filter pressing module and a discharging module are arranged in the main body frame 1, and the filter pressing module is arranged between the feeding module and the discharging module;
the automatic oiling system of fixing on main body frame 1 is installed at filter-pressing module top, and automatic oiling system includes oil storage tank 12, level gauge 14 and distributor 13, and normal use 1 month operating cycle can be maintained to the oil storage capacity of oil storage tank 12, and level gauge 14 sets up high, low oil level alarm device, and the distributor is used for each oiling mouth oil mass distribution, adopts the pipe connection between distributor and each oiling mouth. The filter pressing module comprises a press roll and a pressing mechanism 5, wherein the pressing mechanism 5 comprises a low-pressure area, a high-pressure area and a counter-pressure area; the low-pressure area and the high-pressure area are internally distributed with a plurality of compression rollers, the low-pressure area is provided with 1-3 large-roller-diameter compression rollers, the high-pressure area is provided with 5-12 five small-roller-diameter compression rollers, and the large-roller-diameter compression rollers and the small-roller-diameter compression rollers are distributed on the bearing by adopting a staggered structure and are arranged on the main body frame 1 in the filter pressing module through the bearing.
The upper filter belt and the lower filter belt are sequentially wound on the press roller, the large-roller-diameter press roller and the small-roller-diameter press roller, the upper filter belt and the lower filter belt are attached to the pressing mechanism and wound on the large-roller-diameter press roller and the small-roller-diameter press roller, the upper filter belt and the lower filter belt are in a state of being tightly attached to each other from top to bottom in the low-pressure area and the high-pressure area, the attached parts of the upper filter belt and the lower filter belt are sequentially wound along the arrangement direction of the large-roller-diameter press roller and the small-roller-diameter press roller, and the squeezing dehydration of sludge is realized in the low-pressure area and the high-pressure area of the pressing mechanism 5 through the shearing force between the upper filter belt and the lower filter belt and the vertical squeezing force of the large-roller-diameter press roller to the two filter belts.
The opposite-pressing area comprises an opposite-pressing roller which is tangent to the small-roller-diameter pressing roller in the high-pressure area in a fixed or telescopic mode, so that the filter belt is extruded. The opposite pressing area can adopt an adjustable opposite pressing mode or a fixed opposite pressing mode. The opposite pressing system in the fixed opposite pressing mode comprises a fixed base and opposite pressing rollers, the opposite pressing rollers are fixed on the fixed base through bearings, the fixed base is fixed on the inner side wall of the main body frame 1 (the installation mode is not limited to the fixed base), the opposite pressing rollers are tangent to the small-roller-diameter pressing rollers in the high-pressure area, the opposite pressing pressure generated by the opposite pressing rollers is a continuous constant value, and the number of the opposite pressing rollers is 0-3. The adjustable counter-pressure system comprises a counter-pressure cylinder and a counter-pressure roller, the counter-pressure cylinder can be arranged on a fixed base (the installation mode is not limited to the mode), the counter-pressure cylinder is connected with the counter-pressure roller, and the pressure of the counter-pressure roller is controlled by the extension and contraction of the counter-pressure cylinder. The opposite pressing cylinder is connected with the opposite pressing roller, the opposite pressing roller is tangent to the small-roller-diameter pressing roller of the high-pressure area, the opposite pressing pressure is controlled by stretching of the opposite pressing cylinder, and the number of the opposite pressing rollers is 0-5.
One side of filter-pressing module sets up to the feeding module, the feeding module includes equipartition mechanism 4, and equipartition mechanism 4 sets up in the top of lower filter belt for lay the mud on the filter belt evenly, equipartition mechanism 4 connects the feed inlet that sets up at main body frame 1 top.
Further, the uniform distribution mechanism 4 in the invention can adopt an extrusion molding uniform distribution device or a material uniform distribution device. The material uniform distribution device comprises a sludge distributing machine and a prepressing roller, the sludge distributing machine is composed of a frame, a speed reducing motor, a spreading roller and a return roller, the sludge distributing machine and a main body frame 1 are fixed through bolts and nuts at four corners of the frame, the bolts are welded on the main body frame 1, the height of the sludge distributing machine is adjusted through rotating the nuts, the height of the sludge distributing machine is the vertical height of the bottom of the frame from a filter belt plane in a tensioning state, the distance is 1-8 cm, the height can be adjusted according to the sludge treatment amount, the frame is made of stainless steel, the bottom is strip-shaped hollowed or fully open, the speed reducing motor is composed of a speed reducer and a motor, the spreading roller and the return roller are driven to rotate at variable speed, the spreading roller and the return roller are fixed on two sides of the frame through bearings, the rotating speed of the spreading roller and the return roller is 20-150 r/min, the adjustment is carried out according to different sludge distribution width and height requirements, the spreading roller and the return roller synchronously and reversely rotate, the spreading roller consists of a spreading rotating shaft and spreading blades, the number of the spreading blades is 1-3, the spreading blades are in a screw type, a helical band type or a similar form, the spreading blades are symmetrically distributed along the center of the spreading rotating shaft, so that sludge is spread from the middle to two sides, the return roller consists of a return shaft and return blades, the number of the return blades is 0-2, the return blades are in an anchor type, a frame type or a similar form, the return roller is positioned behind the spreading roller, sludge which is not uniformly spread by the spreading roller can be returned and spread again, the pre-pressing roller is positioned behind the sludge distributor and is fixed on the main body frame 1 through a bearing, and the upper filter belt and the lower filter belt are converged and overlapped at the pre-pressing roller.
The extrusion forming uniform distribution device consists of a material distribution device, a material stirring device and a material discharging device, wherein the material distribution device consists of a stirring paddle, a driving motor and a material distribution frame; the number of the distributing devices is 0 or 1; the stirring paddle comprises 2-4 stirring shafts and blades; the blades are helical blades or central hollow helical blades and are welded around the stirring shaft; the stirring paddles are arranged in parallel at equal intervals, and the center distance of the stirring shafts of the adjacent stirring paddles is 10-40 cm; the driving motor is fixed on one side of the cloth frame and drives the stirring paddles to work. The material shifting device consists of a material shifting roller, a driving motor and a material shifting frame; the number of the material poking devices is 0 or 1; the material stirring roller comprises 2-3 stirring shafts and 2-3 blades; the blades are rectangular blades, central hollow rectangular blades or wolf tooth rod-shaped blades and are welded around the stirring shaft; a plurality of stirring rollers are arranged in parallel at equal intervals, and the center distance of the stirring shafts of adjacent stirring paddles is 10-40 cm.
Furthermore, an online weighing system 16 is installed on a feeding port in the feeding module, a weighing transmitter is configured on the online weighing system 16, signals of the transmitter are fed back to a motor of the uniform distribution mechanism 4, a filter belt walking motor and a feeding conveyor motor, and the motors automatically adjust the rotating speed according to different material quantities, so that intelligent speed adjustment is realized, and the optimal operation condition is achieved.
Further, be equipped with two sets of straining device 2 in main body frame 1, two sets of straining device set up the top at filter-pressing module's 5 of squeezing mechanism and the equipartition mechanism's 4 below of feed module's equipartition mechanism respectively, straining device 2 includes the tensioning roller, tensioning cylinder and filter belt, the tensioning roller divide into tensioning roller and lower tensioning roller, be located main body frame 1 respectively, two parts down, the tensioning roller both ends set up rack and pinion meshing mechanism respectively, the gear is fixed in tensioning roller one end, gear one side sets up baffle 9, avoid the tensioning roller slope, guarantee the synchronous tensioning in filter belt both ends, the rack is fixed on main body frame upper 1's inner wall, can realize the certain degree auto-lock after rack and the gear engagement messenger filter belt tensioning. Tensioning cylinder one end is fixed on main body frame 1 inner wall to tensioning cylinder outer wall sets up the tensile deformation monitoring devices of filter belt, and the tensile deformation monitoring devices of filter belt includes displacement sensor 15, and sensor quantity 15 is provided with the multiunit, with monitoring filter belt tensile deformation, according to different deflection and operating mode, adjusts the compression roller position, and the compression roller regulative mode can adopt manual regulation or automatically regulated, reaches best operating mode. The tensioning cylinder other end and tensioning roller one end fixed connection, tensioning cylinder quantity is 4, be located the left and right both sides of main body frame 1 upper and lower part respectively, the tensioning cylinder extends simultaneously or contracts for the tensioning or loosen the screen, the screen divide into screen and lower screen, twine respectively through last tensioning roller and tensioning roller surface down, the screen adopts composite material or polyester or nylon, high pressure resistant, high temperature, strong acid resistant, the alkali, difficult tensile, the deformation, the screen receives tension when operation is 0.1 ~ 1.0 Mpa.
The other side of the filter pressing module is provided with a discharging module which comprises a discharging device, a driving device 3, a washing mechanism 7 and an automatic cleaning mechanism 8; the discharging device comprises a discharging roller, a driving motor and a discharging frame; the discharging rollers are circular cylinders with edges at equal intervals and concave-convex shapes, and the number of the discharging rollers is 2; 2 discharging rollers are arranged in parallel, concave-convex parts are meshed in a staggered mode, and convex parts are located on the same vertical plane; the distance between the concave edge and the convex edge of each discharging roller is 1-6 cm. The driving motor is fixed on one side of the discharging material frame, and drives 2 discharging rollers to work simultaneously, and the materials after filter pressing are discharged through the discharging device.
The driving device 3 comprises a speed reducing motor and two driving rollers, the speed reducing motor is composed of a speed reducer and a motor, the driving rollers are divided into an upper driving roller and a lower driving roller, the upper driving roller and the lower driving roller are connected in a meshed mode (the connection mode of the upper driving roller and the lower driving roller is not limited to the above), the driving rollers are fixed on the main body frame 1 through bearings, the upper filter belt and the lower filter belt are wound on the upper driving roller and the lower driving roller respectively, the speed reducing motor drives the upper driving roller to be meshed with the lower driving roller through a transmission device to rotate at a variable speed, and the lower driving roller drives the lower filter belt wound on the speed reducing motor to advance at a variable speed. The transmission device described in the invention is in a chain transmission or gear transmission mode, the advancing speed of the filter belt is 1-10 m/min, and the advancing speed is adjusted according to the property and the amount of sludge to be treated.
A flushing mechanism 7 is arranged inside the main frame 1 and on the side of the drive 3, said flushing mechanism 7 being arranged at the same time on the side of the press 5.
The washing mechanism 7 comprises a washing device and a drying device, wherein the washing device adopts a filter belt to wash on one side or two sides, and a washing medium used by the washing device is one or more of water, air or microwaves.
Washing unit who washes mechanism 7 includes water inlet and delivery port, belt cleaning unit's delivery port is equipped with self-cleaning mechanism 8 through quick adapter connection, self-cleaning mechanism 8 includes a plurality of hoses and a plurality of water collector 10, water collector 10 sets up the below at big roller footpath compression roller and little roller footpath compression roller respectively, quick adapter's one end is connected directly straightly, quick adapter's the other end adopts pipe connection to compression roller lower part water collector 10, and the pipeline adopts the hose, and the pipeline both ends set up the loose joint, convenient to detach to the pipeline is equipped with quick pull throughs, and water collector 10 adopts hose 11 to connect according to the big or small roller footpath compression roller staggered ordered arrangement in the below of big or small roller footpath compression roller that the straggly set up, and hose 11 both ends set up the loose joint, convenient to the hose sets up quick pull throughs.
The drying part adopts one or two of two sets of air pumps or two sets of brushes to set up respectively on the working face of last filter belt and lower filter belt, carry out surface and inside moisture filtering to last filter belt after washing and lower filter belt, the air pump is one of aspirator pump or blowing pump, the brush passes through the bolt, the nut is fixed on main body frame 1, with upper and lower filter belt perpendicular laminating, realize carrying out moisture filtering to filter belt surface and inside through the drying part of washing mechanism 7, and discharge device is with mud discharge.
Further, one side of the squeezing mechanism 5 is provided with a deviation rectifying mechanism 6, the deviation rectifying mechanism 6 is arranged on one side far away from the squeezing mechanism, penetrates through the main body frame 1 and extends to the outside of the main body frame 1, and the deviation rectifying mechanism 6 is used for rectifying the position deviation of the upper filter belt and the lower filter belt in the main body frame (1). The deviation rectifying mechanism 6 comprises a deviation rectifying roller, a deviation rectifying cylinder, a signal sensing device and a limit switch, wherein the deviation rectifying mechanism 6 adopts one of a single-side deviation rectifying mode or a double-side deviation rectifying mode, one end of the deviation rectifying cylinder is fixed on the main body frame 1, the other end of the deviation rectifying cylinder is connected with a slide block, the number of the deviation rectifying cylinders is 2 or 4, the slide block can move back and forth on a track along with the extension of the deviation rectifying cylinder, the deviation rectifying roller is fixedly connected with the slide block, the angle of the deviation rectifying roller is changed along with the movement of the slide block, the signal sensing device comprises a signal rod and a signal lamp, the signal rod is fixed at the inner side of the main body frame 1 and two sides of the filter belt, the signal rod is vertical to the plane of the filter belt, the signal lamp is sent after being horizontally pushed for a certain distance by the filter belt, then the deviation rectifying cylinder is triggered to act, so as to drive the change of the angle of the deviation rectifying roller, the deviation rectifying is realized, the limit switch is positioned at the mud outlet of the high-pressure dehydrator and is fixed at the inner side of the main body frame 1 and two sides of the filter belt, and one side of the deviation correcting mechanism 6 far away from the squeezing mechanism 5 penetrates through the main body frame 1 and extends to the outside of the main body frame 1.
Further, the main body frame 1 is made of carbon steel or stainless steel, and the appearance is designed in a totally-enclosed Z shape; the top of the main body frame 1 adopts a flat thin plate sealing cover, the movable door is adopted to be sealed all around, the bottom adopts a lower convex groove back cover, the flat thin plate is a stainless steel plate or is formed by splicing a plurality of stainless steel plates, the lower convex groove is made of stainless steel and is in a regular quadrangular frustum shape, a water outlet is arranged in the center of the center, and water pressing and filtering and flushing water discharging equipment is convenient to realize. The movable doors on the front side and the rear side of the main body frame 1 are made of stainless steel plates, the doors are provided with observation windows, and the observation windows are made of one of transparent materials such as polyvinyl chloride, organic glass or transparent ABS (acrylonitrile butadiene styrene), so that the mud distribution effect and the mud discharge effect can be observed conveniently. The front and back movable doors of the main body frame 1 are in a double-door mode and are fixed through hasp locks, the left and right movable doors are made of stainless steel materials, and the left and right movable doors are in one of a vertical hinged door, a sliding door, a folding door or an upturning door. One or more exhaust interfaces are arranged on the cover plate at the top of the main body frame 1, and the exhaust interfaces can be directly connected with a deodorization system through a pipeline and used for collecting water vapor and odor generated in the operation process.
The application method of the sludge high-pressure belt type deep dehydrator comprises the following steps:
s1, winding the upper filter belt in the filter pressing module and the discharging module, namely winding the upper filter belt on the press roller, the press roller with large roller diameter, the press roller with small roller diameter, the tensioning mechanism in the filter pressing module and the upper driving roller of the driving device 3 in sequence; the lower filter belt is sequentially wound in the feeding module, the filter pressing module and the discharging module, namely the lower filter belt is sequentially wound on a tensioning mechanism, a compression roller, a large-roller-diameter compression roller, a small-roller-diameter compression roller and a lower driving roller of the driving device 3 which are arranged below the uniformly distributed mechanism 4 in the feeding module; the upper filter belt and the lower filter belt are jointed and wound on the large-roller-diameter press roller and the small-roller-diameter press roller in a pressing mechanism, so that one outer side of the upper filter belt and one outer side of the lower filter belt are in a state of being tightly jointed up and down in the low-pressure area and the high-pressure area;
s2, feeding through the feeding hole, and uniformly paving the sludge on the lower filter belt on the filter belt through the uniform distribution mechanism 4 below the feeding hole to ensure that the sludge and the filter belt are uniformly stressed; improve the treatment effect and prolong the service life of the filter belt.
S3, driving the filter paper by the driving device 3, wherein the driving device 3 drives the driving roller to work, so that the upper filter belt wound on the driving roller winds along the winding track, and the lower filter belt on the lower driving roller meshed with the upper driving roller also winds along the winding track synchronously; when the sludge is wound, the upper filter belt is used for tensioning a tensioning mechanism in the filter module, the lower filter belt is used for tensioning the lower filter belt through the tensioning mechanism in the feeding module and is self-locked through arranging a gear and rack meshing mechanism on the tensioning mechanism respectively, the lower filter belt conveys the sludge into a squeezing mechanism 5 which is pressed with the upper filter belt through winding, compression rollers with different roller diameters arranged in the squeezing mechanism 5 realize pressure increment on the part where the upper filter belt and the lower filter belt are pressed, and the sludge between the upper filter belt and the lower filter belt is dewatered in a mode of pressing or continuously pressing;
s4, the flushing mechanism 7 is used for respectively flushing and drying the working surfaces of the upper filter belt and the lower filter belt, so that the water adhered to the upper filter belt is prevented from entering the sludge to influence the sludge dewatering effect;
s5: the washing water of the automatic washing structure 8 is used for automatically washing the water receiving tray 10, so that the water receiving tray 10 is clean.
Compared with the prior art, the invention has the following beneficial effects:
1. through mechanical high-pressure dehydration of the conditioned sludge, the moisture content of the primarily dehydrated sludge can be reduced to 40-70%, the treatment effect is remarkable, the operation cost is low, the dehydrated sludge is flaky or powdery, is not reduced when meeting water, the low-grade heat value is improved, and the subsequent treatment is facilitated.
2. The press rolls with different roll diameters are arranged to realize pressure increasing, a mode of opposite pressure or continuous opposite pressure is adopted, the limit dehydration capacity of the equipment is improved, the sludge distributing machine is adopted to evenly distribute the sludge between the upper filter belt and the lower filter belt, the stress of the sludge and the filter belts is even, the sludge dehydration effect is improved, and the operation loss of the filter belts is reduced.
3. Adopt modes such as air suction and brush filtration moisture, improve washing, the drying of filter belt, avoid being stained with the moisture in area and getting into mud on the filter belt, influence sludge dewatering effect.
4. The appearance of the invention adopts a Z-shaped design, thus greatly reducing the occupied area and being beneficial to the elevation connection of equipment; adopts a totally-enclosed structure, is beautiful and sanitary, and is beneficial to gas collection.
5. The self-cleaning structure of the water receiving tray is arranged, filter belt flushing water is utilized to drive filtrate in the water receiving tray to flow rapidly, so that the water receiving tray always keeps liquid flowing, and the phenomenon that filter pressing overflows due to the formation of sediment is avoided.
6. Due to the modular design, the function partition can be realized, and the operation and maintenance cost is saved.
7. Meanwhile, the synchronous tensioning mechanism for the gear and the rack of the compression roller realizes self-locking to a certain degree after the filter belt is tensioned, and the deviation rectifying effect is realized by the cooperation of the gear and the baffle, so that synchronous tensioning at two ends is realized.
The invention adopts the modularized design and the function zoning, can realize the functions of automatic cleaning, automatic oil injection, synchronous tensioning, intelligent speed regulation, uniform material distribution and the like, and can solve the problems of complex process flow, poor dehydration effect, low sludge treatment capacity, high investment cost, high labor cost and high operation cost of the conventional sludge dehydration equipment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The sludge high-pressure belt type deep dehydrator is characterized by comprising a main body frame (1), an upper filter belt and a lower filter belt, wherein a feeding module, a filter pressing module and a discharging module are arranged in the main body frame (1), and the filter pressing module is arranged between the feeding module and the discharging module; the filter pressing module comprises a pressing roller and a squeezing mechanism, a feeding module is arranged on one side of the filter pressing module and comprises a uniform distribution mechanism (4), the uniform distribution mechanism (4) is arranged above the lower filter belt, and a feeding hole is formed above the uniform distribution mechanism (4); a discharging module is arranged on one side of the filter pressing module and comprises a driving device (3), a discharging device and a flushing mechanism (7); go up the filter belt in proper order around establishing on drive arrangement (3) in compression roller, squeezing mechanism and ejection of compact module, down the filter belt in proper order around establishing on drive arrangement (3) in equipartition mechanism (4) below, compression roller, squeezing mechanism and the ejection of compact module, and go up the filter belt and filter belt down and laminate mutually and establish on big roller footpath compression roller and small roller footpath compression roller in squeezing mechanism, the working face that washes mechanism (7) covers mutually with last filter belt and lower filter belt respectively, realizes carrying out the moisture filtering to filter belt surface and inside through washing mechanism (7) to discharge mud through discharging device.
2. The sludge high-pressure belt type deep dehydrator according to claim 1, wherein the squeezing mechanism comprises a low-pressure zone and a high-pressure zone; the low-pressure zone has a plurality of compression rollers with high-pressure area internal distribution, the low-pressure zone is equipped with an at least big roller footpath compression roller, the high-pressure zone is equipped with five at least small roll footpath compression rollers, big roller footpath compression roller and small roll footpath compression roller all set up in filter-pressing module through the bearing, go up the filter belt and down the filter belt respectively around establishing on compression roller, big roller footpath compression roller and small roll footpath compression roller, and go up the filter belt and laminate mutually in squeezing mechanism with lower filter belt and establish on big roller footpath compression roller and small roll footpath compression roller around.
3. The sludge high-pressure belt type deep dewatering machine as claimed in claim 2, wherein the pressing mechanism further comprises a counter-pressing area, the counter-pressing area comprises a counter-pressing roller, and the counter-pressing roller is tangent to the small-diameter pressing roller of the high-pressure area in a fixed or telescopic mode to realize the pressing of the filter belt.
4. The sludge high-pressure belt type deep dehydrator according to claim 1, wherein the washing mechanism (7) comprises a washing device and a drying device, the working surface of the washing mechanism (7) is covered with the working surfaces of the upper filtering belt and the lower filtering belt, the washing of the filtering belts and the moisture filtering of the surfaces and the interior of the washed filtering belts are realized through the washing device and the drying device, the washing device is connected with the straight discharging device for sewage discharge, and the sludge after filter pressing is discharged through the discharging device.
5. The sludge high-pressure belt type deep dehydrator according to claim 4, wherein the drying device comprises at least two groups of brushes, the brushes are fixed on the main body frame (1), the brush heads of the brushes are respectively attached to the working surfaces of the upper filter belt and the lower filter belt, and the surface and the inside of the washed filter belt are filtered by the brush heads of the brushes.
6. The sludge high-pressure belt type deep dehydrator according to claim 4, wherein the washing device of the flushing mechanism (7) comprises a water inlet and a water outlet, the water outlet of the washing device is connected with an automatic washing mechanism (8) through a quick adapter, the automatic washing mechanism (8) comprises a plurality of hoses and a plurality of water receiving discs (10), the water receiving discs (10) are respectively arranged below the large-roller-diameter compression roller and the small-roller-diameter compression roller, one end of the quick adapter is connected with a straight line, and the other end of the quick adapter is connected with the water receiving discs (10) through a water receiving disc communicating pipe (11).
7. The sludge high-pressure belt type deep dehydrator according to claim 1, wherein at least two groups of tensioning mechanisms (2) are arranged in the main body frame (1), the two groups of tensioning mechanisms (2) are respectively arranged above the squeezing mechanism (5) and below the uniform distribution mechanism (4) of the filter pressing module, and the tensioning mechanisms (2) comprise a tensioning roller, a tensioning cylinder and a filter belt.
8. The sludge high-pressure belt type deep dehydrator is characterized in that the driving device (3) comprises a speed reducing motor and an upper driving roller and a lower driving roller, the upper driving roller and the lower driving roller are meshed and connected, the upper filtering belt and the lower filtering belt are wound on the upper driving roller and the lower driving roller respectively, and the speed reducing motor drives the upper driving roller to be meshed with the lower driving roller to rotate at variable speed through a transmission device.
9. The sludge high-pressure belt type deep dehydrator according to claim 1, wherein a deviation rectifying mechanism (6) is arranged at one side of the squeezing mechanism, one side of the deviation rectifying mechanism (6) far away from the squeezing mechanism penetrates through the main frame (1) and extends to the outside of the main frame (1), and the deviation of the positions of the upper filter belt and the lower filter belt in the main frame (1) is rectified through the deviation rectifying mechanism (6).
10. An application method of a sludge high-pressure belt type deep dehydrator is characterized by comprising the following steps:
s1, winding the upper filter belt in the filter pressing module and the discharging module, namely winding the upper filter belt on the press roll, the press roll with large roll diameter, the press roll with small roll diameter, the tension roll of the tension mechanism in the filter pressing module and the upper driving roll of the driving device (3) in sequence; the lower filter belt is sequentially wound in the feeding module, the filter pressing module and the discharging module, namely the lower filter belt is sequentially wound on a tensioning roller, a pressing roller, a large-roller-diameter pressing roller, a small-roller-diameter pressing roller and a lower driving roller of the driving device (3) of the tensioning mechanism below the uniform distribution mechanism (4) in the feeding module; the upper filter belt and the lower filter belt are attached in the squeezing mechanism and wound on the large-roller-diameter press roller and the small-roller-diameter press roller, so that the upper filter belt and the lower filter belt are in a state of being tightly attached up and down in the low-pressure area and the high-pressure area;
s2, feeding through the feeding hole, and uniformly paving the sludge on the lower filter belt on the filter belt through the uniform distribution mechanism 4 below the feeding hole to ensure that the sludge and the filter belt are uniformly stressed;
s3, driving the upper driving roller by the driving device (3), wherein the driving device (3) drives the upper driving roller to work, so that an upper filter belt wound on the upper driving roller winds along the wound track, and a lower filter belt on a lower driving roller meshed with the upper driving roller also winds along the wound track synchronously; when the filter belt is wound, the upper filter belt is tensioned by a tensioning mechanism in the filter module, the lower filter belt is tensioned by the tensioning mechanism in the feeding module and is self-locked by a gear and rack meshing mechanism arranged on the tensioning mechanism respectively, the lower filter belt conveys sludge into a squeezing mechanism (5) pressed with the upper filter belt through winding, pressure increasing is realized on the pressed part of the upper filter belt and the lower filter belt by compression rollers with different roller diameters arranged in the squeezing mechanism (5), and the sludge between the upper filter belt and the lower filter belt is subjected to limit dehydration in a mode of pressing or continuously pressing;
s4, the working surfaces of the upper filter belt and the lower filter belt are respectively washed and dried by using a washing mechanism (7), so that the phenomenon that the water adhered to the upper filter belt enters the sludge to influence the sludge dewatering effect is avoided;
s5: the washing water of the automatic washing structure (8) is used for automatically washing the water receiving tray (10), so that the water receiving tray (10) is ensured to be clean.
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| CN202111219853.0A CN113896398A (en) | 2021-10-20 | 2021-10-20 | Sludge high-pressure belt type deep dehydrator and application method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028180A (en) * | 2022-08-11 | 2022-09-09 | 烟台核信环保设备有限公司 | Bayer process red mud dealkalization equipment and process |
| CN115286209A (en) * | 2022-06-28 | 2022-11-04 | 上海凌逍环保科技有限公司 | Sludge depth reduction system and application method thereof |
-
2021
- 2021-10-20 CN CN202111219853.0A patent/CN113896398A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115286209A (en) * | 2022-06-28 | 2022-11-04 | 上海凌逍环保科技有限公司 | Sludge depth reduction system and application method thereof |
| CN115286209B (en) * | 2022-06-28 | 2023-08-15 | 上海凌逍环保科技有限公司 | Sludge depth reduction system and application method thereof |
| CN115028180A (en) * | 2022-08-11 | 2022-09-09 | 烟台核信环保设备有限公司 | Bayer process red mud dealkalization equipment and process |
| CN115028180B (en) * | 2022-08-11 | 2022-10-25 | 烟台核信环保设备有限公司 | Bayer process red mud dealkalization equipment and process |
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