CN101074145A

CN101074145A - Sludge drier

Info

Publication number: CN101074145A
Application number: CN 200610084342
Authority: CN
Inventors: 徐成铣
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-18
Filing date: 2006-05-18
Publication date: 2007-11-21

Abstract

A mud drier for evaporating water content by electric heating separation consists of evaporator with thermal-insulating upper and lower pots, welded spiral piece in evaporator, screw axis of mud scraper, electro-thermal coil distributed at lower part of evaporator, thermo-coupler for controlling electro-thermal coil temperature, gathering channel with steam outlet, feed inlet and outlet, thermal-insulating material, package and assembly. Pipeline is released by induced draft fan with vapor-water separator connection. An electromagnetic speed-control motor is connected with screw axis by driving belt, reduction box and coupler. Control motor, electro-thermal coil circuit, elements, electric meter, controller, pressed switch and indicator light are placed in electrical-appliances control cabinet. It has disposable dry for deposited sludge.

Description

Sludge drier

Affiliated technical field

The present invention discloses the drying plant that evaporation moisture content is isolated in a kind of electrically heated, especially to the disposable exsiccant sludge drier of sewage disposal settled sludge.

Background technology

Settled sludge serves as final the processing to pour landfill yard in the sewage disposal at present, and still unmatchful drying sludge is made effective equipment of recycle value.Though there is the stirring-type hot air dryer in Japan, dried mud is taked burning disposal.This drying machine, a hotblast stove and a rotatable horizontal drum are arranged, the vertically stirring piece of welding of many one-tenth is arranged in the cylinder, the swivel pipe of an advanced blowing hot-air that equates substantially with drum length is arranged in the middle of cylinder, and opening for feed on the cylinder and discharge port.Also have optional equipment hotblast stove, particle collector, vent fan, heat exchanger, deodorization incinerator.Mud drops into hopper and enters cylinder in use, under the effect of swing roller stirring piece, mud is taken up, counter-rotating falls, the hot blast of hotblast stove is deflated fan and draws in the rotation jar that can advance blowing hot-air at this moment, contact with taking up the mud that falls that reverses, the moisture content in the mud is converted into water vapour, pull away with exhaust fan.Because this drying machine, drying sludge is out of control, contains a large amount of flying dust in the outlet, polluted air, thereby increased a particle collector, and its heat exchanger effect is the water vapour that cooling is pulled out by exhaust fan, its final processing is that deodorization is burned, and does not use and do not do him.This drying machine because cylinder otherwise stop rotation can not be incubated so cylinder is outer, is welded with many stirring pieces again on inner wall of rotary drum, be equivalent to increase many heat absorbing sheets, has more increased distributing of hot blast heat.On the other hand, under vent fan draws wind action, enter the hot blast of rotatable heating duct, be drawn out outside the cylinder, can not in cylinder, circulate or stop with the water vapour in the mud is disposable, therefore, the heat energy loss height.This drying machine, no rotating speed is adjustable, and no hot blast temperature is controlled, and the height of sludge moisture content is controlled by charging fully, and charging is not equal to discharging, so can not carry out the control that drying sludge requires, therefore can not pack and utilize, has only burning.This in fact drying machine is that the drying machine used of domestic previous cement mill is basic identical, not advanced.

Summary of the invention

For overcoming this stirring-type hot air dryer, the heat energy loss height, no hot blast temperature is controlled, no rotating speed levelling, there are not the input and output material balance mechanism again, be difficult to realize the deficiency of drying sludge requirement, the present invention at first is familiar with the essence of mud, handles according to the tap water turbidity, municipal sewage treatment, the data of aspects such as plant effuent processing, analysis-by-synthesis, mud can be divided into two big classes, the one, the municipal effluent settled sludge, it belongs to sanitary wastewater and the domestic refuse rotten substance that is mixed in the water, and the 2nd, factory's mud belongs to chemical industry, chemical classes is lost thing, the material of movement and cleaning thing and so on does not belong to mud so affirmed the essence of sewage disposal settled sludge, is primary foundation of the present invention.The invention provides a kind of electrically heated for this reason and isolate evaporation moisture content, heat energy utilization power height, drying sludge is fast, automatic controlled electrically heated temperature, the input and output material unanimity, and can be according to sludge moisture content and the requirement of discharging drying sludge, the running condition that can comprehensively align equipment reaches the utility value once more of mud.

The technical scheme that the present invention solves its technical problem is: have an all risk insurance temperature to divide and go up the involutory evaporating pot of second jar, electric heating coil is equipped with in it second jar outside, in the interval of electric heating coil, be inserted with the automatic temperature-controlled thermocouple probe of energy design temperature, with the discharge port of tail end, there is a pneumatic trough and the opening for feed that can tear the steam outlet of the flange that connects with external cage guide open in it first jar last central authorities, connect a gate on the opening for feed, on connect a hopper.In evaporating pot, there is an outside to be welded with the screw shaft of flight, push away before the flight that direction is intrinsic does not copy trowel with the straight many handles of screw shaft.Evaporating pot is stretched out at the screw shaft two ends, and by the flange at evaporating pot two ends and stifle location, and sealing equalizing bed and axle housing bearing pack are arranged is one.Be equipped with shaft coupling and be connected with reduction gearbox output shaft at screw shaft shaft place, and the input shaft of reduction box and electromagnetic adjustable speed motor output shaft involve.On the steam outlet on the pneumatic trough of evaporating pot, pipe connection air water separator and induced draft fan are arranged, gas is pulled out emptying.Other has an electric control cabinet, and whole control apparatuses are connected electromagnetic adjustable speed motor with element, induced draft fan, electric heating coil and thermopair with lead.And evaporating pot, reduction box be fixed on the support constitute.

When carrying out drying sludge, preceding earlier electric control cabinet the combined floodgate, connect electric guiding principle, push three electric heating coil knobs in electric control cabinet front, make three alternating current contactor closures that connect electric heating coil that are contained in the electric control cabinet, the heating of connection electric heating coil, pilot lamp is luminous, and at this moment, it is temperature required at the Automatic Temperature Control in electrical control cabinet front to set thermopair, because the normally closed interlock of thermopair is serially connected in the unlatching circuit of alternating current contactor, makes to thermopair and start working.After mud enters hopper, push the electromagnetic adjustable speed motor knob in electric control cabinet front, make the alternating current contactor closure of this electromagnetic adjustable speed motor of control, motor rotation, and affect reduction box through transmission belt, make to the output shaft of reduction box and drag screw shaft in the evaporating pot synchronously through shaft coupling, mud begins to send into evaporating pot, because intrinsic many stir-fry trowel on the flight, in the screw shaft rotation, mud is pushed ahead, fry that trowel is constantly taken up the mud that has heated at the bottom of the evaporating pot and instead fall, mud is not lumpd and loose, emit water vapour, rise to pneumatic trough.At this moment, push the induced draft fan knob in electric control cabinet front, the alternating current contactor of controlling induced draft fan is closed contain, the starting induced draft fan by steam outlet, is pulled out emptying to the water vapour that rises to pneumatic trough through pipeline and air water separator.Voltmeter on the front of electric control cabinet and total current table, voltage condition and equipment running current situation when but apparent is connected electric guiding principle, also have several minutes reometers, suffer from respectively and being connected in the input circuit of electric heating coil, whether visual electric heating coil works, as a branch reometer no current indication is wherein arranged, be electric heating coil no power or damage, answer maintain and replace.When concrete operations, dry if mud is owed, can close the flashboard on the paddle, increase electric heating coil and heat up, turn down the electromagnetic adjustable speed motor rotating speed, then opposite during the mud too dry.Because of thermocouple probe is inserted in the electric heating coil interval, its sense line is connected in the thermopair automatic thermostat of electric control cabinet, can close or open electric heating coil automatically according to design temperature, prevent the too high burning sludge of evaporating pot temperature, make mud reach required dry requirement.

The invention has the beneficial effects as follows, can be according to sludge moisture content height, until mud, all can set temperature required and advance pusher speed, and can control automatically.Under the effect of induced draft fan, evaporating pot produces negative pressure, has reduced the water evaporates temperature, is frying under the trowel effect, mud is constantly taken up instead to fall, and loose mud is emitted water vapour, the short drying sludge time of speed, this sludge drier adopts all risk insurance temperature, and heat lost by radiation is little, and energy consumption is low; And can set with automatic control and combine, fast drying, the dry expense of ton is low, and universal accessories is many, and is easy and simple to handle, and structure is tightly beaten, and volume is little, and cost is low, and sludge-drying can pack transportation, for farm crop provide barnyard manure or spare and make boiler oil in coal.Create secondary value.

Description of drawings

Below in conjunction with accompanying drawing, embodiments of the present invention are described further.

Fig. 1 is each big parts of the present invention and assembly technology schema.

Fig. 2 be all risk insurance temperature evaporating pot and annex and support partly cut open front view.

Fig. 3 is the view of all risk insurance temperature evaporating pot tail end A of Fig. 2.

Fig. 4 is the sectional drawing of all risk insurance temperature evaporating pot B-B of Fig. 2.

Fig. 5 be air water separator among Fig. 1 (5) partly cut open front view.

Fig. 6 is (13) shape of electric control cabinet among Fig. 1 and instrument site plan.

Fig. 7 is electric circuit and the control principle figure in the electric control cabinet (13).

Concrete enforcement formula side:

As shown in Figure 1, evaporating pot (1), reduction box (2), be located in support (3), connecting tube (4) on the last central water vapor outlet port of evaporating pot (1), an air water separator (5) is equipped with in its centre, and the awl that docks with air water separator (5) closes the end a water discharge valve (6), the tail end of pipeline (4), connect the import of induced draft fan (7), on the exhaust outlet of induced draft fan (7), load onto blow-down pipe (8).Attaching gate (9) and loading hopper (10) above it on the opening for feed of evaporating pot (1).Other has an electromagnetic adjustable speed motor (11), on the output shaft of this electromagnetism adjustment motor a belt pulley is arranged, and through transmission belt (12), affects reduction box (2), uses shaft coupling (38), interlock screw shaft (18) on the output shaft of reduction box (2).For the appliance controling element that just overlaps sludge drier, be packed in the electric control cabinet (13).And connect the motor and the electric heating coil of answering current collector control with lead as required.

To shown in Figure 7, evaporating pot (1) is divided into second jar (14) as Fig. 2, first jar (15), and its length is 2700～3300 millimeters, tank diameter is 400～800 millimeters.A special-shaped furan flange (16) and (17) of breathing out is respectively arranged at its two ends, the shape of described Kazakhstan furan flange is to have added above positive garden and insulation foreskin (42) wide and high, weld-edgewise has band iron (39), below positive garden, added and to be fixed in keeping a foothold above the support (3), positive garden side weld has band iron (39), the centre of evaporating pot (1), a screw shaft (18) is arranged, be welded with flight (19) on its periphery, the working direction side of flight (19), have with screw shaft (18) do not form straight line many stir-fry trowel (20), its width is 1/5th of a flight (19), length is 4/5ths of 150 millimeters of sheet squares, and is that working direction horizontal sextant angle hypsokinesis 30 degree are advisable.Outside at second jar (14), uniform electric heating coil (21), this electric heating coil are copper-clad sealing semicircle type general parts, in the space of electric heating coil, have and to insert thermocouple probe hole (22), the thermopair automatic thermostat (55) on the sense line connecting circuit housing of probe.At the bottom of the afterbody of second jar (14), a discharge port (23) is arranged.On first jar (15), pneumatic trough (24) is arranged, there is the steam outlet (25) that can tear the flange that connects with external pipe open in its central authorities, and there is an opening for feed (26) top, the right.In screw shaft (18), be contained in second jar (14) after, cover first jar (15), and first jar (15) and second jar (14), with involutory the fixing of flange (27) that is welded on these two and half jars of limits.Stifle (28) and (29) before and after being inserted in tamps graphite and expects root (30) and (31) in hollow joint, in the top of bearing support (32) a lubricating cup hole (34) is arranged, and be pressed into copper bearing (33), is fixed on the stifle (29) with screw rod.At the place that lifts one's head of screw shaft (18), but the bearing support (35) of pass-out screw shaft (18) at the bottom of is arranged, a lubricating cup hole (37) is also arranged above, after being pressed into copper bearing (36), be fixed on again on the stifle (28).And on the spindle nose of screw shaft (18), be inserted in shaft coupling (38).Formed the overall of generating tube (1).And be fixed in support (3) above.

As shown in Figure 3, discharge port (23) is an angle.

As shown in Figure 4, insulation skin (41) has thermocouple probe patchhole (22) and electric heating coil lead and penetrates hole (64) in the corresponding position, be fixed on the band iron (39).Tamp lagging material pure aluminium silicate (40), the end opening of insulation skin (42) splices with the suitable for reading available self-tapping screw of insulation skin (41), and its end face is fixed on the band iron (39) with screw rod.Tamp lagging material pure aluminium silicate (40), seal butt joint foreskin (43).

As shown in Figure 5, air water separator among Fig. 1 (5), it have a garden simplified (44) and with garden cylindrical shell (44), the cone of butt joint (45), below a water shoot (46) is arranged, middle dress water discharge valve (47), flat envelope above the garden cylindrical shell (44), and insert the water vapour inlet pipe (48) that has flange, pull out pipe (49) with the gas that has flange, with feet (50) location.

As shown in Figure 6, electric control cabinet among Fig. 1 (13) is a metal shell (51), should there be air flowing lily window both sides, primary voltage table (52) is housed in the front, the branch reometer (54) that total current table (53) and each electric heating coil are one, and three thermopair automatic thermostats (55), an electromagnetic adjustable speed motor speed regulator (56), five push switches (58), five pilot lamp of adapted (57).A grounding screw rod (59) is arranged at the bottom.

As shown in Figure 7, in electric control cabinet (13), 3 total fusible cut-outs (60) are housed, following contact at it divides work five road power supplys, every road power supply has three shunting fuses (61), wherein all there is an alternating current contactor (62) on three tunnel every roads, control electric heating coil (21), wherein one the tunnel has an alternating current contactor (62), control induced draft fan (7), another Lu Youyi alternating current contactor (62), control electromagnetic adjustable speed motor (11), the wiring (63) of its electromagnetic speed-adjusting part inserts electromagnetic speed regulator (56).

When drying sludge, but there is part mud energy product to become big block, when not advancing hopper, should adopts artificial or special plane is cut into small pieces, to improve the quality of sludge-drying.

Claims

1, the sludge drier of evaporation moisture content is isolated in a kind of electrically heated, comprises evaporating pot, screw shaft, electric heating coil, electromagnetic adjustable speed motor, reduction box and air water separator induced draft fan and connecting tube and control circuit and element composition.It is characterized in that: evaporating pot has second jar of going up involutory, and there is the pneumatic trough that can roll over the steam outlet of the flange that connects with external pipe its top, complete jar of insulation.

2, require 1 described sludge drier according to profit, it is characterized in that: be welded with flight on the screw shaft, what its advance side was intrinsic and screw shaft does not form straight line is many stir-fry trowel, and this stir-fry cutter becomes the hypsokinesis angle with working direction.

3, ask 1 described sludge drier according to right power, it is characterized in that: be inserted with thermocouple probe in the interval of electric heating coil, its sense line connects the thermopair two-position controller, and the normally closed interlock in the thermopair two-position controller is contacted with the push switch of the alternating current contactor of control electric heating coil.