JPH07223719A - Dewatered cake crushing and conveying machine - Google Patents

Abstract

PURPOSE:To provide a dewatered cake conveying machine, which is arranged in the lower section of a filtering device such as a filter press, which can discharge dewatered cakes in the filtering device and clean the filtering device without a time lag, can control the dispersion of odor of the dewatered cakes inn the conveying machine, and can also effectively convey the cakes while crushing the plate-like dewatered cakes from the filtering device. CONSTITUTION:Lid plates 2A and 2B are closeably provided in a box type casing 1 in which a screw type conveyer structure 3 comprising three screws, 3A, 3B and 3C which are parallel with each other are contained, and with the lid plates 2A and 2B opened, dewatered cakes are received from a filtering device B, and immediately after the discharge of dewatered cakes from this filtering device B, the lid plates 2A and 2B can be closed. A difference is provided between the rotary speeds of the center screw 3B of the screw type conveyer structure 3 and the rotation of the screws 3A and 3C on both sides to make shearing force work on dewatered cakes, constituting a dewatered cake crushing and conveying machine A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a conveyance method in which a dehydrated cake obtained by filtering a produced slurry in food-related treatment, sewer treatment, etc. can be conveyed while being crushed by three screw conveyors arranged in parallel. Regarding the device.

[0002]

2. Description of the Related Art In facilities such as food processing such as brewing, sewage treatment, night soil treatment or turbid water treatment for construction work, especially the treatment work using water, the slurry produced is filtered by a filtration device. And dehydrated cake (filter cake) are separated, and treatment or disposal is performed depending on their properties and uses. In this case, as a filtering device, a filter press that is relatively small in scale and capable of processing a wide range of concentrations of slurry is generally used, and the dehydrated cake discharged from this filter press is a belt disposed below the filter cake. It is carried out by a conveyor or the like and is transported to a storage hopper, a deposition treatment plant, or the like.

[0003]

However, in the filter press, a large number of filter plates and filter frames are alternately arranged in parallel, a filter cloth is sandwiched between them and water or hydraulic pressure is applied, and the slurry is pressurized and supplied into the filter frame. Filter through a filter cloth, and after the filtration is completed, the filter plate and the filter frame are separated from each other, the dehydrated cake in the filter frame is dropped to wash the filter frame and the filter cloth, and the assembly of the device is repeated. Is. That is, the discharge of the dehydrated cake in a series of filtration operations and the cleaning of the filter material and the like are performed in a linked manner, and in order to prevent the cleaning water from mixing with the dehydrated cake, the dehydrated cake that falls off the filter frame and falls is The conveyor device has to be carried out to the outside of the filter press area for cleaning, there is a large time lag, there is a problem in processing workability, and the dehydrated cake, such as sake lees in a brewing factory, produces an odor. In this case, the odor is emitted for a long time, which may be a problem in terms of work environment and factory environment.

Furthermore, the dehydrated cake that falls off the filter frame and falls is viscous due to the water content, and even if it falls on the conveyor, it is often conveyed in a plate-like bulky state. There is a problem in that it may not be able to be satisfactorily conveyed because it may be caught on the way or slipped off the conveyor.

In view of the above problems, the present invention avoids mixing of the dehydrated cake from the filtering device such as a filter press, in which discharge and drop of the dehydrated cake and cleaning of the filter medium and the like are carried out, and washing water is avoided. It is an object of the present invention to provide a conveyer device in which work is efficiently performed, odor emission due to a dehydrated cake is suppressed, the dehydrated cake can be crushed, and transportation can be smoothly performed.

[0006]

In order to achieve the above-mentioned object, the present invention provides a dehydration cake transporter which is arranged below a filtration device for continuously discharging the dehydration cake and cleaning the device, A box-shaped casing provided with a lid plate openable and closable on the top, the lid plate opened to receive the dehydrated cake, and the lid plate closed to prevent inflow of washing water of the apparatus, and the casing. Crushing of the dehydrated cake, which is arranged in parallel in the inside and comprises a screw conveyor mechanism with three screws having different rotation speeds of the central screw and the screws on both sides, which is conveyed while crushing the dehydrated cake. We propose a carrier.

[0007]

[Operation] In conjunction with the end of the filtration process in the filtration device, the lid plate of the crushing and conveying machine is opened and the screw conveyor mechanism is operated. When the dehydrated cake discharged from the filter falls on the three screws in the casing, the central screw and the screws on both sides have different rotation speeds, so the dehydrated cake spread over two to three screws. Is subjected to a shearing force due to the difference in the conveying speed, and the dehydrated cake is crushed and conveyed while being wound around each screw. Immediately after the dehydration cake has been discharged and dropped from the filtration device, the cover plate is closed immediately to close the casing while the screw conveyor mechanism is still operating.
Therefore, even if the cleaning of the filtering device is started, the washing water does not enter the casing, and the series of operations of the filtering device can be continued regardless of the crushing carrier, and the odor emission of the dehydrated cake from the crushing carrier can be continued. Is suppressed. The screw conveyor mechanism is stopped after a sufficient time so that the conveyance of the dehydrated cake is completed, and the screw conveyor mechanism is prepared for the next start.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings according to embodiments. 1 is a plan view of the crushing carrier of the present invention, FIG. 2 is a side view of the crushing carrier of FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2, and the cover plate is in a closed state. 4 is a view corresponding to FIG. 3 in which the cover plate is in an open state.

As shown in FIGS. 1 and 2, the crushing carrier A of the present invention is a box-shaped casing which is arranged below a filter press B supported by a gantry and has a pair of lid plates 2A and 2B. 1, a screw conveyor mechanism 3 including three consecutive screws 3A, 3B, 3C arranged in parallel inside the casing 1, and these screws 3
The rotary drive mechanism 4 includes a motor 5 with a speed reducer for rotationally driving A, 3B, 3C, and a lid opening / closing mechanism 6 for opening / closing the lid plates 2A, 2B.

Although not shown in detail, the filter press B is of a normal type in which a filter cloth as a filter medium is sandwiched between a filter plate and a filter frame and pressure-contacted, and then a slurry is supplied to perform a filtering operation. After ejecting the dehydrated cake from the filter frame by mechanical operation such as vibration or physical operation such as vibration, and dropping it down through the hopper, wash the filter cloth, filter frame, etc. with high-pressure water, reassemble, and press-filter. I will configure the machine.

The casing 1 has three screws 3A,
It is formed into a long rectangular parallelepiped box that can accommodate 3B and 3C arranged in parallel, is reinforced by ribs provided on the outer wall side, and is fixed on the floor by the saddle 7 (FIG. 2).
However, in order to facilitate the conveyance of the dehydrated cake by the screw conveyor mechanism 3, as shown in FIG. 3, the bottom surface has arcuate corners on both sides, and the angle between the screws 3A, 3B, 3C is made of angle steel. The guide strip 8 is fixed (Fig. 3). An inspection hole 10 is provided in the drive side portion provided with the cover 9.
A deodorizing hole 11 and a drain 12 are provided, and the deodorizing hole 11 is connected to a deodorizing device (not shown).

As shown in FIG. 3, the casing 1 has an opening 13 directly below the filter press B and a pair of left and right openable cover plates 2A and 2B. At the bottom surface position on the discharge side opposite to the drive side, a discharge port 14 for the dehydrated cake is provided so as to fill the bottom surface width of the casing 1. Side plates 15 inclined outward are attached to the upper ends of both side walls of the casing 1, a water collecting trough 16 is provided on the outer surface thereof, and a drain 17 is attached to an appropriate portion thereof. As shown in FIG. 1, a pit 18 is provided on the floor below the casing 1 so as to intersect with the casing 1. As will be described later, the dehydrated cake from the outlet 14 of the casing 1 is exposed to the outside. It is installed and disposed in a closed-type carry-out conduit 19 that houses a carry-out mechanism by a belt conveyor device for carrying out.

As shown in FIG. 3, the cover plates 2A and 2B of the casing 1 are curved in the width direction and appropriately reinforced by ribs 20 so that they are in the shape of a dome when closed, and the upper filter press B is used. The washing water flowing down from the lid plate 2
The water flows along the upper surfaces of A and 2B, flows down to the water collecting troughs 16 on both sides, and is further collected in a water tank (not shown) via the water drainer 17. Further, a rubber plate 21 is provided between the lower edge rear surface of the lid plates 2A and 2B and the side plate 15 of the casing 1, and when the lid plates 2A and 2B are closed, the casing 1 is kept in a sealed state. Is being done.

As the lid opening / closing mechanism 6 for the lid plates 2A and 2B,
Slightly above the lower edges of the lid plates 2A, 2B, a pair of long shafts 24A,
24B is rotatably held along the lid plates 2A and 2B (FIGS. 1 and 2), and is paired from the floor of the pit 18 along the lower edges of the lid plates 2A and 2B. A vertical power cylinder 26 mounted on a cylinder mount 25 that has been raised is provided. Then, the lid plate 2A,
2B and the shafts 24A, 24B are provided with lifting arms 27 having both ends fixed respectively at four places, and the shafts 24A, 24B are provided close to the lifting arms 27.
There is provided a rotating arm 29 having one end fixed and the other end pivotally supported on the top of the rod 28 of each power cylinder 26.

The power cylinder 26 is adapted to operate in association with the operating condition of the filter press B, and the shafts 24A and 24B are rotated by the expansion and contraction of the rod 28 of the power cylinder 26 via the rotating arm 29. When the shafts 24A and 24B are rotated, the lid plates 2A and 2B are moved to the shaft 2 via the lifting arm 27.
4A and 24B are pivoted about a support shaft to be opened and closed vertically.

The power cylinder 26 has a connecting portion with the cylinder mounting base 25 so as not to hinder the rotation of the rotating arm 29 about the shafts 24A and 24B as the shafts associated with the vertical movement of the rod 28. It is tiltable as a fulcrum. The limit of vertical movement of the rod 28 is regulated by limit switches 30A and 30B.

As shown in FIG. 1, the screw conveyor mechanism 3 consisting of three series of screws 3A, 3B, 3C arranged in parallel in the casing 1 has respective screws 3A, 3A.
Drive gears 31A, 31B, 31 for rotationally driving B, 3C
It is connected to a rotary drive mechanism 4 composed of C, a sprocket 32, and a motor 5 with a speed reducer, which is connected via a chain 33.

Each of the screws 3A, 3B, 3C is of a normal type in which screw blades are fixedly mounted on the screw shaft, but the upper portion of the discharge port 14 of the casing 1 lacks the screw blades, and the screw blades are formed before and after the screw blades. The direction is reversed, and the dehydrated cake is gathered to the discharge port 14 side by the rotation of the screw shaft. Each of the screws 3A, 3B, and 3C has a shaft end on the discharge side supported by a bearing 34 on a flange portion on the casing end, but the screw 3B in the center is on the drive side via a bearing 35 on the flange portion. The drive gear 31B and the sprocket 32 are attached, and the shaft end is supported by the external bearing 36.
A and 3C are supported by a bearing 35 of a flange portion on the drive side, and drive shafts 31A and 31C are respectively engaged with the drive gear 31B of the central screw 3B at the shaft ends.
Is attached. The sprocket 32 is connected to the motor 5 with a speed reducer via a chain 33, and in conjunction with the operating condition of the filter press B, the power cylinder 26 opens and closes the cover plates 2A and 2B, and the speed reducer is also operated. The attached motor 5 operates and the screws 3A, 3
B and 3C are driven to rotate.

In the screw conveyor mechanism 3, the drive gears 31 for the screws 3A and 3C on both sides are provided.
Although A and 31C have the same number of teeth as each other, a drive gear 31B having a small number of teeth is used as the drive gear 31B of the central screw 3B, and the screws 3A on both sides are compared with the rotation speed of the central screw 3B. Reduce the rotation speed of 3C,
The dehydrated cake on the screws 3A, 3B, and 3C is likely to be crushed due to the difference in the conveying speed. In addition, the purpose of crushing the dehydrated cake can be achieved even if the rotation of the screws 3A and 3C on both sides of the central screw 3B is changed to be faster than that of the above configuration.
It is not a good idea from the standpoint of increasing the load on the motor 5 with a reducer.

Above the discharge port 14 of the casing 1, a baffle plate 37 is mounted in a mountain shape in the width direction of the casing 1 at a height close to the screws 3A, 3B and 3C (FIG. 2). It is possible to prevent the dehydrated cake that is projected and carried over 3A, 3B, and 3C from being conveyed. Further, a closed-type discharge conduit 19 accommodating a belt conveyor device is connected to the lower portion of the discharge port 14 via a closed chute 38, and this belt conveyor device is interlocked with the operation of the screw conveyor mechanism 3. The dehydrated cake falling from the discharge port 14 can be automatically carried out to the outside of the pit 18 in a hermetically closed state by being operated so as to operate. Partition plates 39 formed at the front and rear of the casing 1 are partition walls of the opening.

In the crushing and conveying machine A constructed as described above, when the filtering operation of the filter press B is completed, as shown in FIG.
6, the rod 28 moves downward in the retracting direction, the rotating arms 29 rotate the shafts 24A and 24B, and the lifting arms 27 fixed to the shafts 24A and 24B.
Thus, the lid plates 2A and 2B rotate upward with the shafts 24A and 24B as supporting shafts, and open and open on both sides. Further, the motor 5 with a speed reducer is operated along with the operation of the power cylinder 26, and the central screw 3B is rotated by the rotation of the sprocket 32, so that the drive gear 31B and the drive gear 3
Screws 3A, 3 on both sides due to meshing of 1A, 31C
C also rotates, and at the same time, the belt conveyor device of the carry-out conduit 19 installed in the pit 18 also operates.

The press of the device in the filter press B is released, the filter plate and the filter frame are separated from each other, and the dehydrated cake 4
When 0 is removed from the filter frame and falls, the dehydrated cake 40 is loaded on the screws 3A, 3B, 3C, and the screw 3
It is conveyed to the discharge side while being pushed by the rotating blades of A, 3B, and 3C. At this time, the rotation of the central screw 3B is faster than the rotation of the screws 3A and 3C on both sides, so that the plate-shaped dewatering cake 40 that spreads over the width of the casing 1 and is in contact with the screw blades has a difference in conveyance force due to the screw blades. Shearing force is applied. The dehydrated cake that has been shredded and crushed is caught in the screw blades of the screws 3A, 3B, and 3C, and is efficiently pushed to the discharge port 14 side.

Dehydrated cake 4 in filter press B
When the release of 0 is completed, the power cylinder 26 is operated by the interlocking operation and the rod 28 is extended. This allows
The cover plates 2A and 2B of the casing 1 are closed, the crushing and conveying machine A is in a hermetically closed state, the dewatering cake 40 is removed from the filter press B, and the apparatus is washed, and the washing water flows down onto the casing 1. However, the wash water is the lid plate 2
Flows on A and 2B according to the inclination, and the water collecting gutters 16 on both sides
The water is collected in the water, and then drained to the outside through the drainer 17.

On the other hand, the inside of the casing 1 is sucked through the odor releasing hole 11, and after the lid plates 2A and 2B are closed, the dehydrated cake 40 inside the casing is taken by the chute 3.
Since it can be conveyed by the closed conveyance path to the outside predetermined area through the 8 and the discharge conduit 19, odor emission from the dehydrated cake 40 is also suppressed.

[0025]

As is apparent from the above invention, according to the crushing and conveying machine of the present invention, the screw conveyor mechanism composed of three screws having different rotation speeds is arranged below the filtering device and discharged from this filtering device. Since the dehydrated cake that has been dropped is received, the water-free cake can be efficiently conveyed while being crushed, and the lid plate can be closed and the casing can be sealed in accordance with the cleaning of the filtration device. Therefore, it is possible to continue device cleaning without a time lag, and therefore, the operation of the filtration device can be performed in a coordinated and efficient manner without adjusting to the operation of the crushing carrier, and further, the odor of dehydrated cake in the carrier can be eliminated. It is possible to obtain a dewatering cake crushing carrier capable of minimizing the emission.

[Brief description of drawings]

FIG. 1 is a plan view of a crushing and conveying machine of the present invention.

2 is a side view of the crushing and conveying machine of FIG. 1. FIG.

FIG. 3 is a front cross-sectional view taken along the line III-III in FIG. 2 showing the case where the lid plate is in the closed state.

FIG. 4 is a view corresponding to FIG. 3 showing a case where the lid plate is in an open state.

[Explanation of symbols]

 A Crushing Conveyor B Filter Press (Filtration Device) 1 Casing 2A, 2B Lid Plate 3 Screw Conveyor Mechanism 3A, 3B, 3C Screw 4 Rotation Drive Mechanism 5 Reducer Motor 6 Lid Opening / Closing Mechanism 10 Inspection Hole 11 Odor Removal Hole 12 Drain 13 Opening 14 Discharge port 16 Water collecting gutter 17 Draining 18 Pit 19 Carrying out conduit 21 Rubber plate 24A, 24B Shaft 25 Cylinder mount 26 Power cylinder 27 Lifting arm 28 Rod 29 Rotating arm 31A, 31B, 31C Drive gear 32 Sprocket 33 Chain 37 Baffle board 38 Chute 40 Dehydrated cake

Claims (1)

[Claims] 1. A transporter for a dehydrated cake, which is arranged at a lower part of a filtration device for continuously discharging the dehydrated cake and cleaning the device, comprising a lid plate openable and closable and opening the lid plate. A box-shaped casing that receives the dehydrated cake and closes the lid plate to prevent the washing water from flowing into the device; and a central screw and screws on both sides, which are arranged in parallel in the casing. A crushing and conveying machine for dehydrated cake, comprising a screw conveyor mechanism comprising three consecutive screws having different rotation speeds, and conveying the dehydrated cake while crushing.