JP2003211293A - Solid-liquid separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the carrying ability of a solid-liquid separator, and to increase a pressure squeezing effect. <P>SOLUTION: A plurality of rotary shafts 7 are arranged in parallel to a longitudinal direction with respect to a frame 2a, and are rotatably pivotally supported. Many rotor plates 4 are fitted to the rotary shafts 7 at predetermined intervals. A guide member 3 having a guide surface for a horizontal direction is arranged between adjacent rotor plates 4. The solid-liquid separation of a solid-liquid mixed matter to be treated which is charged in a feeding surface side formed by the upper circumferential surface of the rotor plate 4 of each shaft is carried out by rotating each rotary shaft 7 in the same direction. A separated and collected solid-state object is sequentially carried according to the rotating direction of the rotor plate. Many planar guide members 3 having a guide surface with a smooth upper surface are attached to a frame 2a side as the guide member 3. The rotor plate 4 is made into an elliptical form, and the feeding surfaces of the adjacent rotor plates 4 fluctuate in a feeding direction while forming a waveform in order during rotation of the rotor plates 4. The elliptic phase of the rotor plate 4 is arranged sequentially by being shifted by 90° for each adjacent shaft. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, draining of garbage, sewerage sludge, sludge processing waste, slaughterhouse wastewater, various washing wastewater, wastewater from food factories, separation of solids and liquids from food processing processes, etc. As described above, the present invention relates to a solid-liquid separation device that separates solids and liquids of a processed product in which solids (solids) and liquids are mixed.

[0002]

2. Description of the Related Art As a conventional solid-liquid separation device, Japanese Patent Publication No.
The rotating disk type dehydrator shown in the publication No. 32844 is known. In this device, the sludge-like liquid-containing treated material is put into the casing and the slit material is used to receive the treated material.
A large number of discs, the circumferential surfaces of which are projected on a slit plate formed with a large number of slits, are eccentrically rotated by a rotation shaft in the discharge direction of the processed product, whereby the processed product is sent to the discharge side on the slit plate. In this process, the liquid component drops from the gap between the disc in the slit and is filtered, and the solid component in the processed product is separated and collected. A belt conveyor that rotates in the discharging direction and squeezes the collected matter on the slit plate to remove liquid is provided on the slit plate.

[0003]

The above-described dehydrating apparatus is capable of continuous automatic operation with little power and no vibration and noise, is compact, and has a slit plate having a large number of slits. Although it has the advantage that it has the ability, if it is squeezed by pressing it on the feed surface on the horizontal slit plate, it is weak against the vertical force and a strong squeezing load cannot be applied from the top. Further, since a surface without slits is formed between the rotating plates of the adjacent shafts, there is a drawback that the collected matter is collected in this portion and cannot be completely conveyed.

[0004]

According to the apparatus of the present invention for solving the above-mentioned problems, first, a plurality of rotating shafts 7 are rotatably supported by arranging a plurality of rotating shafts 7 in parallel in a front-rear direction with respect to a frame 2a,
A large number of rotary plates 4 are mounted on the rotary shaft 7 at predetermined intervals, and a guide member 3 having a lateral guide surface is arranged between the adjacent rotary plates 4, and each rotary shaft 7 Are rotated in the same direction to perform solid-liquid separation of the solid-liquid mixed processed material that has been introduced into the feed surface side formed by the upper peripheral surface of the rotary plate 4 of each shaft, and the separated solid trap In the device for sequentially transporting the above according to the rotation direction of the rotary plate, a large number of plate-shaped guide members 3 having a guide surface having a smooth upper surface are attached to the frame 2a side as the guide members 3.

Secondly, the plate member 3 is characterized in that it is detachably or removably attached to the receiving portion 8 provided on the frame 2a side.

Thirdly, the rotary plate 4 is formed into an elliptical shape, and while the rotary plate 4 is rotating, the feed surface of the adjacent rotary plate 4 forms a corrugated wave sequentially during the rotation so as to change in the feed direction. I am trying.

Fourthly, it is characterized in that the phases of the ellipses of the rotating plate 4 are sequentially shifted by a predetermined angle for each adjacent axis.

The fifth feature is that the phase shift of the elliptical shape is 90 °.

Sixthly, it is characterized in that the intervals between the peripheral surfaces of the rotating plates 4 adjacent to each other in the left-right direction during rotation are formed to be substantially constant.

Seventh, a squeezing tool 15 for squeezing and deliquoring the processed material conveyed on the sending surface by pressing it from above.
Is provided so as to be supported on the frame 2a side.

Eighth, it is characterized in that the pressing surface of the squeezing tool 15 moves up and down in accordance with the elevation of the feeding surface.

Ninthly, an arm 17 pivotally supported on the frame 2a side is provided so that the tip of the squeezing tool 15 oscillates as the feed surface moves up and down.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described in detail below. FIG. 1 is an overall sectional view of a prototype sample showing the principle structure of the device of the present invention. A device main body 2 is a frame 2a constituting a box-shaped lower part. A casing 2b surrounded by a thin plate is attached to the top. Reference numeral 1 is a hopper for charging a processed material. Inside the casing 2b, upper open side walls 5 are provided facing each other in parallel with each other in the left-right direction, and between the side walls 5 and 5, a groove-shaped transfer path is formed for processing and transferring a processed material.

A large number of rotating shafts 7 are provided between the side walls 5 and 5.
Are rotatably supported in the front-rear direction at regular intervals, and a large number of elliptical rotary plates 4 are integrally mounted on the rotary shaft 7 at regular intervals in the same phase. The rotation plate 4 is shifted in phase by 90 ° between adjacent rotation shafts, and when the shafts simultaneously rotate in the same direction at the same speed, the upper outer peripheral surface (feed surface) forms a wave as a whole. Thus, it operates in the carrying direction (left direction) and can exert a large scraping force and carrying force. To do. The rotating plate 4 has a plate thickness of 0.5 mm.

On the rotary shafts 7, the rotary plates 4 of the respective shafts 4 are mounted.
Guide member 3 made of a plate-shaped member so as to be inserted on both sides of
However, it is accommodated and supported in a vertical direction so that it can be inserted / removed and along the processing object transport direction. The upper end surface of the guide member 3 forms a smooth guide surface that guides the processed material sent by the rotation of the rotary plate 4 in the feed direction, and the rotary plate 4 is inserted between the guide members 3. The slit 9 is formed.

The guide member 3 is made of, for example, a stainless plate having a thickness of 1.0 mm and a total length of about 450 mm.
At intervals of 5 mm, the receiving portions 8 attached to the left and right ends below the conveying path are engaged and supported. Reference numeral 3b is a hook portion formed so as to be engaged with the receiving portion 8. The upper end surface of the guide member 3 serves as a guide surface for feeding a processed material, which will be described later, in the transport direction, and the lower end side thereof has a notch 3a at a position corresponding to each rotary shaft so as to reach below the rotary shaft 7 further. It is provided.

Pulleys 11 are respectively fitted on both ends of each rotating shaft 7, and the motors 12 are installed in the lower frame 2a by alternately winding the adjacent pulleys 11 with the timing belts 13 on the front and rear sides. Thus, each axis can be simultaneously and accurately driven to rotate in the same direction at the same speed. 14 is a belt around which one of the pulleys 11 on the drive motor 12 side is wound.

Each rotating shaft 7 is driven by a motor 12, for example, 10
The sludge-like processed product, which is slowly rotated at about 50 rpm and put on the guide member 3, is discharged from the discharge port along the upper surface of the guide member 3 while being lifted from below to the peripheral surface of the rotating plate 4 in each row. It is sent out in the direction of 6.

On the upper part of the casing 2b, an arm 17 made of a stainless steel plate or the like on which a weight 16 is mounted so that the weight 16 can be adjusted to increase or decrease the weight, and a squeezing tool 15 for pivotally supporting a shaft 18 so as to be vertically swingable are provided. The squeezing tool 15 oscillates substantially following the vertical movement of the peripheral surface of the rotary plate 4 and presses the object to be dehydrated. The squeezing tool 15 is provided or weight-adjusted according to the kind of the processed material and the required degree of deliquoring. Other squeezing tools 15
Instead of the weight 16, it is also possible to use a roller (not fixed) which is rotatably supported by the tip of the arm 17 and is rotatably supported on the upper surface of the object to be squeezed.

In the process of moving the sludge-shaped object on the upper surfaces of the guide member 3 and the rotary plate 4, the gap between the rotary plate 4 and the guide member 3 in the slit 9 and the peripheral surface of the adjacent rotary plates 4 are formed. Water and other liquid components are filtered downward from the gap S between them and discharged to the outside through the waste liquid outlet 19, and the solid components collected on the guide member 3 are sequentially filtered and dehydrated while being sent to the peripheral surface of the rotary plate 4. It is discharged from the discharge port 6.

By using the elliptical rotary plate 4 in the above apparatus, the scraping and conveying force is increased more than that of the eccentrically rotating disc, and the scraping and conveying is performed twice by one rotation. In addition to the increase, the gap between the adjacent ellipses and the surfaces of the ellipses can always be kept constant. By keeping the gap S small and constant, the collecting property and dewatering property of small-diameter solids are improved, and the rotation of the rotating plate 4 in the forward direction causes the solids to stay in this part. In addition, unlike the conventional case, it is not necessary to remove the collected matter accumulated on the fixed plate, and the cleaning is easy.

The rotating plate 4 does not necessarily have to be an elliptical shape, and may be a polygonal shape such as a regular triangle, a square, a regular pentagon, etc., in which each piece has an arcuate mountain shape and the corners are rounded. In these cases, one rotation of the rotary shaft 7 increases the number of times of feeding for scraping, such as three times, four times, and five times.

The above-mentioned device shown in the figure is miniaturized because it is an experimental prototype, but the processing capacity is increased by adding a feed mechanism consisting of the guide member 3 and the rotary plate 4 in the horizontal or vertical direction. The squeeze tool 15 can be added while adjusting the interval with the guide member 3 as necessary.
May be extended. The structure and dimensions of the apparatus main body 2 are not limited to the example shown in the figure, and can be arbitrarily changed according to the properties of the object to be treated and other conditions, and the dimensions of the guide member 3, the rotating plate 4, etc. can be changed in the same manner. Besides, the guide member 3 and the rotating plate 4
The material of the other materials can be changed to stainless steel, synthetic resin, or the like depending on the type of processing object or processing (for example, food processing or waste processing).

In addition, in the above discharging process of the collected matter, by providing a mechanism for drying and dehydrating with hot air, the collected matter dehydrated and discharged from the separating device is further dried by the drying device to obtain water or liquid content. It is also considered as an application example that the gas is recovered as a trapped substance having a small amount and mixed with a gas having a chemical action such as a gas for deodorization or sterilization together with the hot air from the hot air supply unit.

[0025]

According to the structure of the present invention configured as described above, by arranging a large number of guide members in a lattice shape along the direction in which the processed material is conveyed, the conveyance becomes smooth, and the plate-shaped member is arranged in the vertical direction. Therefore, there is an advantage that a strong pressing load can be applied from the upper part and the squeezing effect can be enhanced. In addition, by making the rotating plate elliptical so that the distance between the peripheral surfaces can always be made narrow and constant, there is no unprocessed material left, the dehydration power is 1.2 times, and the filtration flow rate is constant, In comparison with the above, the processing capacity can be expected to increase about three times as a whole. Further, the structure is simpler than that of the conventional multi-type rotary discs that are superposed on the peripheral surface, and the cost and size can be reduced, and the maintenance can be facilitated. In addition, since the undulation is increased by making the rotating plate elliptical, the transportability of the collected substance is improved,
The carrying capacity was increased compared to the disk.

[Brief description of drawings]

FIG. 1 is an overall front sectional view showing the principle of the structure and operation of the device of the present invention.

FIG. 2 is a front view of a guide member of the device of the present invention.

FIG. 3 is a right side sectional view of the device of the present invention.

FIG. 4 is an enlarged front view of a main part of the device of the present invention.

FIG. 5 is an enlarged right side view of the feed shaft of the device of the present invention.

FIG. 6 is an enlarged plan view of the device of the present invention.

[Explanation of symbols]

1 hopper 2 device body 3 guide members 4 rotating plate 6 outlets 7 rotation axis 9 slits 11 pulley 12 Drive motor 13 Timing belt 14 belt 15 Press 16 weights 17 arms 18 axes 19 Waste port

Claims (9)

[Claims] 1. A plurality of rotating shafts (7) are arranged in parallel in the front-rear direction with respect to a frame (2a) and are rotatably supported, and a large number of rotating plates (4) are predetermined on the rotating shaft (7). A guide member (3), which is axially mounted at intervals and has a horizontal guide surface between adjacent rotating plates (4), is arranged to rotate the rotating shafts (7) in the same direction. Thus, solid-liquid separation of the solid-liquid mixed treated material that has been introduced into the feed surface formed by the upper peripheral surface of the rotary plate (4) of each shaft is performed, and the separated solid collected matter is separated by the rotary plate (4). ), A solid-liquid separation device in which a large number of plate-shaped guide members (3) having a smooth guide surface are attached to the frame (2a) side as the guide members (3). . 2. The plate member (3) is attached to a receiving portion (8) provided on the frame (2a) side so as to be disengageable or insertable / detachable.
Solid-liquid separator. 3. The rotating plate (4) is elliptical, and the rotating plate (4) is
The solid-liquid separation device according to claim 1 or 2, wherein the feed surface of the adjacent rotary plate (4) during the rotation of (1) changes in the feed direction while sequentially forming a waveform during the rotation. 4. The solid-liquid separation device according to claim 3, wherein the phases of the ellipses of the rotating plate (4) are sequentially shifted by a predetermined angle for each adjacent axis. 5. The solid-liquid separation device according to claim 3, wherein the phase shift of the elliptical shape is 90 °. 6. The rotating plate (4) adjacent to each other in the left-right direction during rotation is formed such that the circumferential surfaces thereof have a substantially constant interval.
Or the solid-liquid separation device of 2 or 3 or 4 or 5. 7. A pressing tool (15) for pressing and depressurizing a processed material conveyed on the feeding surface from the upper side, and provided with a pressing tool (15) supported on the frame (2a) side. 3 or 4 or 5 or 6 solid-liquid separation device. 8. The solid-liquid separation device according to claim 7, wherein the pressing surface of the squeezing tool (15) moves up and down according to the ups and downs of the feeding surface. 9. The arm (17) swingably supported on the frame (2a) side so that the tip of the squeezing tool (15) swings as the feed surface moves up and down. 8. Solid-liquid separation device.