JPS61289996A - Treatment device for dehydrating and drying sludge or the like - Google Patents

Abstract

PURPOSE:To surely remove moisture from sludge, moist fibers, etc. by simplified constitution and lasy control operation by constituting the titled device in such a manner that a material to be treated is simultaneously subjected to a compression dehydration effect and heating and drying effect by low-speed rotation. CONSTITUTION:The moist material to be treated from which extraneous materials are removed by a suitable pretreatment device is introduced 21 into the device and on the other hand, a motor 11 is driven to rotate a shaft 30 in a casing 20 at a low speed. A heat medium is at the same time supplied to a heating jacket 40 and a heating pipe 43. Feed vanes 31 of the rotating shaft 30 feed the material toward a discharge port 22 side and during this time, the moisture in the material is leached to the inside of the shaft 30 and to the outside of the casing 20 by dehydration holes 32 and draining holes 23 from the gradually narrowing space between the outside periphery of the shaft 30 and the inside periphery of the casing 20 and is thereby discharged away. The material is heated and dried from the inside and outside of the casing 20 by the heating effect of the heat medium and the falf-solidified material is stored in a storage chamber 16 in the front part of the frame 10. The stored material is properly subjected to a discarding treatment.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a sludge and other dehydrating and drying equipment, and is used to treat sludge in human waste treatment plants and other places in pollution treatment facilities, mash in brewing facilities, and mash in food manufacturing facilities. The present invention relates to a sludge and other dehydration and drying treatment apparatus that is capable of continuous compression, dehydration and drying of marine products and other processed foods, water-containing IIN materials such as boards in paper manufacturing facilities, and other industrial waste.

[Technical background of the invention and its problems] Conventionally, in order to dehydrate this type of sludge, moromi, processed foods, boards, and other water-containing miscellaneous materials and other industrial waste, forced drying, centrifugation, and sedimentation have been used. In addition, all of the devices are large, require a large installation area, and are inconvenient to handle. In particular, when using the centrifugal separation method, the centrifugal separation tank must be rotated at high speed, and its support structure,
Rotary drive! The lJ mechanism and other components were complicated, and their control operations were also troublesome. In addition, as a device that heats while squeezing by rotating a screw blade arranged inside the casing to dehydrate and dry, for example,
Publication No. 7, Publication No. 57-148500, Publication No. 58-19
4494, JP-A-57-174198, etc. Although these devices flow the heat medium through the screw blades or circulate the heat medium in heat tubes placed outside the casing, they have poor thermal efficiency and are structurally complex.

[Purpose of the Invention] Therefore, the present invention was created in view of the above-mentioned conventional drawbacks, and provides a compressing action and a heating drying action to the processed material even by low speed rotation. By doing this, water can be reliably removed from hydrated RAH materials.Moreover, by making this possible through low-speed rotation, the aim is to simplify the configuration of moving parts and make control operations easier. It is something to do.

[Summary of the invention] In order to achieve the above-mentioned object, the present invention includes a longitudinally long frame, and a longitudinally long cylindrical casing having a supply port at the rear and a discharge port at the front, respectively. The diameter gradually increases from the rear to the front, and a hollow cylindrical shaft with spiral feeding blades protruding from the outer periphery is rotatable in the front-rear direction of the casing and supported within the casing. , a large number of drainage holes are formed in the casing and a large number of dewatering holes are formed in the shaft, and the supplied material is compressed between the outer circumference of the shaft and the inner circumference of the casing in the process of sending the supplied material to the front of the casing, At the same time, a hollow heating jacket is placed on the casing, and a donut-shaped heat exchanger plate is attached to the heating jacket around the outer periphery of the casing. The heating pipe is arranged in the heating jacket and the heating pipe so that the heat medium is forced to flow through the heating jacket and the heating pipe. This method succeeded in reliably removing moisture by squeezing it out, and in simplifying the mechanism.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings.

The reference numeral 1 shown in the figure is a base, and on this base 1, wastewater impurities and other sludge from pollution treatment facilities, human waste treatment plants, sewage treatment plants, livestock manure treatment plants, factories, etc., and brewing facilities. Supports the casing 20 for dehydrating processed materials such as beer, lees, moromi, and other processed foods such as meat, marine products, and fruits in food manufacturing facilities, boards and pipe wastewater in paper manufacturing facilities. A long frame 10 is provided at the front and rear of the vehicle.

Although the casing 20 itself is not shown, it is designed to be substantially sealed from the front and back, and the upper part may be opened and covered by a machine frame for internal inspection and repair, if necessary. The □ casing 20 has a longitudinally long cylindrical shape with a supply port 21 formed at the rear and a discharge port 22 formed at the front, with the supply port 21 facing upward at the rear of the frame 10. The casing 20 itself is mounted on the frame 10 with its front and back directions aligned with each other, with the discharge port 22 facing the storage chamber 16 defined at the front of the frame 10.

Inside the casing 20 is a hollow cylindrical shaft 30 that is rotatable along the front-rear direction of the casing 20 and compresses the material to be processed, which is input and supplied from the supply port 21 while sending it to the discharge port 22. supported within the casing. That is, the shaft 30 itself gradually becomes larger in diameter from the rear to the front, and has spiral feeding blades 31 protruding from its outer periphery, and is provided at the rear and front ends of the frame 10. The driving force of the motor 11 supported by a bearing 13 and disposed on the front side of the frame 10 as shown in the figure is transferred to a deceleration mechanism 12 using an appropriate chain or the like.
It shall be rotated through. The 300 rotations of the shaft are made to rotate at an extremely low speed of about 5 to 6 times per minute, and at this time, the rotational driving source of the shaft 30 is the large diameter of the shaft 30, that is, the front portion It is desirable to perform this in order to improve drive efficiency. In this way, the rotation of the shaft 30 causes the material to be processed to be fed from a wide space volume area at the rear supply port 21 to a narrow space volume area at the front discharge port 22, and the material is transported between the outer periphery of the shirt 1-30 and the casing 20. It is compressed between the inner circumference.

The casing 20 has a large number of small-diameter drainage holes 23 that are smaller than the solid particles of the material to be treated, and depending on the case, the diameter gradually increases from the rear to the front. In addition, the shaft 30 is also provided with a large number of dehydration holes 32, each of which is smaller than the solid particles of the material to be treated.
As mentioned above, the water squeezed out from the compressed workpiece is allowed to ooze into the shaft 30 and out of the casing 20. The moisture seeped out of the casing 20 falls into the drain 14 in the frame 10 disposed below the casing 20, is guided to the drain port 15, and is discharged to the outside. On the other hand, the moisture seeped into the shaft 30 is discharged to the outside through a drain suction pipe 33 that communicates with the inside of the shaft 30.
3 is a vacuum suction type using a vacuum pump, which draws suction from the front end of the shaft 30. In this way, the interior of the shaft 30 can be reliably drained, and the shaft 30 can be easily identified. The dehydration efficiency can be greatly improved.

In addition, the drain hole 23 drilled in the casing 20 and the dehydration hole 32 drilled in the shaft 30 are designed to prevent the water-containing processed material from leaving the space inside the casing 20 even if it is made into a paste. As shown in FIG. 4, between the slightly thick inner plate 35 and outer plate 36 arranged inside and outside,
The casing 20 wall and the shaft 30 wall are formed to have a sandwich structure with a thin intermediate plate 37 interposed therebetween, and the inner plate 3
5. The outer plate 36 is provided with a large diameter through hole, and the intermediate plate 37 is provided with a large number of fine through holes arranged within the large diameter hole to form drainage holes 23 and dewatering holes. A hole 32 is formed.

For example, the wall thickness of the inner plate 35 and outer plate 36 is 2 to 3.
As a result, the diameter of the intermediate plate 37 is set to 0.2, the diameter of the hole drilled in the inner plate 35 and the outer plate 36 is set to 511III, and the diameter of the hole drilled in the intermediate plate 37 is set to 0.2M. In this way, the thin plate, in which fine holes can be easily drilled, can be protected by the thick plate, and its robustness can be maintained.

In the figure, reference numeral 24 denotes a squeezing mechanism, and as shown in the figure, it has a donut-conical head register 26 that is movably in contact with a register plate 25 fixed to the inner edge of the outlet 22 to close the outlet 22. The head register 26 has a built-in pressing spring and is biased toward the front by a head register pressurizer 27 mounted on the outside of the frame 10, for example. By changing the pressing force of the head register pressurizer 27 toward the discharge port 22, the discharge of the compressed and semi-solidified material to the storage chamber 16 is regulated. It is possible to adjust the moisture content of the treated material, that is, the dehydration rate.

In addition, clogging of the drain hole 23 in the casing 20 may be prevented by spraying clean water under an appropriate pressure to the outside of the casing 20 using a cleaning pipe (not shown) arranged in the front-rear direction above the casing 20. In addition, a deodorizing port 17 opened above the storage chamber 16 in the front part of the frame 10.
It is used to diffuse unpleasant odors and other substances to a predetermined location.

In this way, the shaft 30 rotating within the casing 20 squeezes the object to be treated and squeezes out moisture, while the object to be processed is heated from the inside and outside within the casing 20, thereby performing the drying process. It looks like this.

That is, a hollow heating jacket 40 is placed on the casing 20, and this heating jacket 40
A donut-shaped heat transfer plate 41 is fixed to surround the outer periphery of the casing 20 by penetrating through the shaft 30, and a heating pipe 43 is disposed inside the shaft 30 in the front-rear direction. steam, hot oil,
It is designed to force the flow of a heat medium such as hot water.

As shown in FIG. 3, the heating jacket 40 itself has a double inner and outer partition wall that forms the upper part of the casing 20 into an arc shape so as to cover approximately 173 mm of the entire circumference of the upper part of the casing 20.
0 from the rear supply port 21 to the front discharge port 22, and is provided with a slight gap from the outer circumferential surface of the casing 20 so as to enable dewatering from the drain hole 23 at the upper part of the casing 20. Alternatively, it is optional whether the inner wall of the heating jacket 40 and the wall of the casing 20 are matched to directly heat the inside of the casing 20, but the latter is preferable from the viewpoint of improving thermal efficiency.

The heat exchanger plate 41 surrounds the casing 20 at predetermined intervals from the rear to the front and is fixed by welding, and the heating jacket 40 has circulation holes through which the heat medium flows. It is opened (see Figure 3). This heat transfer plate 41 is heated by a heat medium in the heating jacket 40 so that the heat is transferred to the entire body, and functions to heat the wall of the casing 20 in the lower part of the casing 20. Make sure to heat it evenly. Further, the heat exchanger plates 41 are mutually supported by a support frame 42 arranged along the length direction of the casing 20 to maintain their strength.

On the other hand, the heating pipe 43 is disposed inside the shaft 30 by passing through the front and rear bearings 13 for rotationally supporting the shaft 30 within the casing 20, and is rotated in the same manner as the shaft 30.

Heating jacket 40 and heating pipe 4
The heat medium is supplied into the interior of the frame 10 by, for example, a heat medium heater 44 disposed behind the frame 10 and heating jackets 1 to 3.
40. This is done by a heating medium pipe 45 connected to each of the heating pipes 43, however, a rotary joint 46 is installed at the connection part with the rotating heating pipe 43, and the rotation of the heating pipe 43 and the supply of the heating medium are performed. The aim is to ensure smooth operation. Furthermore, in order to ensure smooth flow of the heat medium within the heating jacket 40 and the heating pipe 43, the heat medium is sucked by a heat medium suction device 47 disposed in front of the frame 10, and the heat medium is By returning the heat medium to the heater 44 and circulating it, the efficiency of heating by the heat medium is improved.

The present invention is constructed as described above, and when the present invention is used, for example, a material to be processed after removing impurities by an appropriate pre-processing device is inputted from the supply port 21, and the casing is removed by the motor 11. What is necessary is to rotate the shaft 30 in the heating jacket 20 at a low speed and supply the heating medium to the heating jacket 40 and the heating pipe 43. Then, the feed blade 31 of the rotated shaft 30
The material to be processed is sent to the discharge port 22, and the gap between the outer periphery of the shaft 30 and the inner periphery of the casing 20, which gradually becomes narrower during the feeding process, allows moisture in the material to be processed to be removed through the dehydration hole 32 and the drainage hole 23 into the shaft 30 and the inside of the shaft 30. The leached water is leached out of the casing 20, and the leached water is sucked into a predetermined location and removed, and the object to be treated is heated from inside and outside the casing 20 by the heating action of the heating medium, thereby drying it.

As a result, the moisture in the material to be processed is removed, and the semi-solidified material is stored in the storage chamber 16 at the front of the frame 10 and disposed of as appropriate.

[Effect of the invention] Therefore, by inputting sludge and other water-containing delicate substances as the material to be treated and operating the material, the moisture in the material to be treated can be dehydrated, and all of the processing during this time can be carried out automatically within the casing 20. In addition, since the inner body of the shaft 30 only needs to rotate at a low speed, the load on the moving parts is small, and the configuration can be simplified. heating jacket 4
0. By controlling the supply of heat medium to the heating pipe 43, etc., dehydration processing corresponding to each type of industrial waste such as sewage, human waste treatment, factory sludge, etc. can be carried out smoothly and quickly.

In particular, a longitudinally long cylindrical casing 20 with a supply port 21 at the rear and a discharge port 22 at the front is disposed inside the longitudinally long frame 10, and the diameter gradually increases from the rear to the front. Since a hollow cylindrical shaft 30 having a spiral feeding blade 31 perforated on its outer periphery is rotatably supported in the casing 20 in the front-back direction of the casing 20, the processed material fed from the supply port 21 is The objects are sent to the discharge port 22 by the feeding action of the feeding blades 31, and in the process of being fed, the distance between the outer circumference of the shaft 30 and the inner circumference of the casing 20 gradually narrows, so that the objects to be processed are compressed. The moisture in the processed material is squeezed out.

Furthermore, the casing 20 has a large number of drain holes 23 and the shaft 30 has a large number of dewatering holes 32, and the water squeezed out when compressed during the feeding process is passed through these drain holes 23 and dewatering holes. Moisture in the material to be treated is removed by being leached from the holes 32, and since the removal action is accompanied by the feeding action of the feeding blades 31, continuous processing is possible.

Furthermore, although the casing 20 itself has the same diameter at the rear and front, and although the shaft 30 gradually increases in diameter to narrow the internal space at the front, the outer diameter of the feed blade 31 is completely the same at the rear and front. Since the diameter is the same, casing 2
The outer edge of the feed blade 31 of the shaft 30 rotated within the casing 20 and the inner circumferential surface of the casing 20 can be in close contact with each other at any location, ensuring forward feeding of the object to be processed.

In addition to the squeezing action caused by the rotation of the shaft 30 within the casing 20, the heating action from inside and outside the casing 20 is added, so that drying of the material to be processed can be promoted more efficiently. That is, a hollow heating jacket 40 is disposed on the casing 20, a doughnut-shaped heat transfer plate 41 is inserted through the heating jacket 40 and fixed around the outer periphery of the casing 20, and the shaft 30
A heating pipe 43 is arranged inside in the front and back direction,
Heating jacket 40 and heating pipe 4
3, the heat medium is forced to flow, so that the casing 20 is heated from the outside by the heating jacket 40 and from the inside by the heating pipe 43 disposed inside the shaft 30.
Dehydration is achieved by drying the object to be processed to facilitate post-processing. In particular, heating from the outside of the casing 20 can be done by the heating jacket 40 placed on the top of the casing 20.
This heating jacket 40 includes a casing 20
Since the donut-shaped heat transfer plate 41 that is fixed and surrounds the heating jacket 40, the heat transfer plate 41 that is heated inside the heating jacket 40 transfers the heat to the lower part of the casing 20, and the outside of the casing 20. In addition, since the drain hole 23 drilled in the lower part of the casing 20 is not blocked, the leached water can be reliably dropped into the drain 14 located below. .

As explained above, according to the present invention, various industrial wastes can be continuously compressed, dehydrated and dried, and has excellent effects such as a simple structure and fewer breakdowns.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a plan view, Fig. 3 is a sectional view of the casing, and Fig. 4 is an enlarged sectional view of the main parts of the casing and shaft. It is. DESCRIPTION OF SYMBOLS 1... Base, 10... Frame, 11... Motor, 12... Reduction mechanism, 13... Bearing, 14...
・Drain, 15... Drain port, 16... Storage chamber, 17
... Deodorizing port, 20... Casing, 21... Supply port, 22... Discharge port, 23... Drain hole, 24...
Squeezing mechanism, 25... Register plate, 26... Head register, 27... Head register pressurizer, 30
... Shaft, 31 ... Feed blade, 32 ... Dehydration hole, 33 ... Drainage suction pipe, 35 ... Inner plate, 36
...Outer plate, 37... Intermediate plate, 40... Heating jacket, 41... Heat transfer plate, 42... Support frame,
43... Heating pipe, 44... Heat medium heater, 45... Heat medium pipe, 46... Rotary joint, 47... Heat medium suction device. Patent applicant Nikko Sogyo Co., Ltd. Patent Application No. 129324 of 1985 FAX G l [nu 03 (616) 5708
Drawings subject to 5° correction by one other person

Claims (1)

[Claims] 1. A longitudinally long frame is provided with a longitudinally long cylindrical casing in which a supply port is formed at the rear and a discharge port is formed at the front. A hollow cylindrical shaft with a large diameter and a spiral feeding blade protruding from the outer periphery is rotatable in the front-rear direction of the casing and is supported within the casing. Dehydration holes are opened respectively, and in the process of sending the supplied materials to the front of the casing, they are compressed between the outer circumference of the shaft and the inner circumference of the casing, and are dehydrated. A jacket is placed on the casing, a donut-shaped heat exchanger plate is inserted through the heating jacket and fixed around the outer periphery of the casing, and heating pipes are arranged inside the shaft in the front and back direction. A device for dehydrating and drying sludge and other materials, characterized in that a heat medium is forced to flow through a jacket and a heating pipe. 2. The apparatus for dehydrating and drying sludge and other materials according to claim 1, wherein the shaft is rotated at a low speed.