JP2011121017A - High purity oil recovery means and food sludge recovery apparatus having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide high purity oil recovery means of recovering high purity oil from food sludge drainage and a food sludge recovery apparatus for recovering high purity oil from food sludge drainage as well as solid contents. <P>SOLUTION: The high purity oil recovery means includes an oil separating means 10 of separating oil contents 51 from drainage 50 containing food sludge and a suspended matter removing means which is installed downstream of the oil separating means 10 to remove suspended matter 51b from oil contents 51, thus recovering high purity oil 51a. The oil separating means 10 includes a funnel member 15 which is inserted into a suction tube 11 and composed of a funnel-like conical portion 16 with a diameter increasing toward upward and a straight tube portion 17 connected to a lower end of the conical portion 16, and a lifting member 40 which can lift up and down the funnel member 15. The food sludge recovery apparatus 1 includes a precipitate recovery means having a cylinder pump 35 for transporting precipitate sludge-contained drainage near an inner bottom of a drainage tank and a precipitate removing filter 31 for removing precipitate 53b of the precipitate sludge-contained drainage, and a high-purity oil recovery means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a high-purity oil collecting means and a food sludge collecting apparatus including the same. More specifically, the present invention relates to a high-purity oil recovery means for recovering high-purity oil from food sludge drainage, and to a food sludge recovery device that recovers high-purity oil from food sludge drainage and also collects solids.

The waste liquid containing food sludge discharged from kitchens such as restaurants is rich in animal and vegetable oils, so it is forbidden to be discharged directly into sewers, and must be discharged after removing oil and fat. I must.
Usually, a so-called grease trap tank is installed as a drainage treatment tank. The waste oil discharged from the kitchen and stored in the grease trap tank has fats and oils floating in the upper layer of the drainage and deposits in the lower layer. Therefore, the effluent purified by collecting these oil and fat and precipitated sludge is discharged to the sewer.
However, grease and fat deposits accumulate in the grease trap tank in a short period of time, so if the removal work is not performed frequently, it may cause the drainage pipe to become clogged, or it may cause bad odor due to decay etc. . On the other hand, removal of these is mainly manual work, which is troublesome and time-consuming work.
In addition, the collected fat and oil and precipitated sludge are discarded because they are difficult to reuse.
It is also preferable from the viewpoint of environmental protection if the suspended oil and moisture can be removed from the recovered oil and fat and reused as fuel for stoves, boilers and the like.

Here, an apparatus that collects and removes oil and fat and precipitates and discharges middle-layer wastewater has been proposed (see, for example, Patent Document 1). According to the apparatus of Patent Document 1, the oil / fat content collecting means for returning the oil / fat accumulated in the upper layer into the collection bag and the precipitate collection means for returning the sediment deposited in the lower layer to the collection bag are provided. And the precipitate can be efficiently recovered.
In addition, means for removing suspended matters near the water surface in the water tank has been proposed (see, for example, Patent Document 2). According to the apparatus of Patent Document 2, the floating head near the water surface is floated near the water surface by the float body connected to the telescopic bellows hose, and the floating matter near the water surface is sucked into the suction head and collected. .
Furthermore, means for recovering oil from wastewater has been proposed (see, for example, Patent Document 3). According to the apparatus of Patent Document 3, a float having a suction port connected to a suction pipe is floated on the surface of the drainage, and oil can be collected through the suction pipe.

Japanese Patent Laid-Open No. 2003-1282 JP-A-5-15565 JP-A-7-275855

However, in the apparatus of Patent Document 1, the oil / fat recovery means cannot inhale the oil / fat depending on the height of the drainage because the suction port for inhaling the oil / fat is fixed. That is, when the position of the suction port is in the oil and fat layer of the drainage, only fats and oils can be sucked, but when the position of the suction port is in the water layer below the fat and oil layer, moisture will be sucked. It is difficult to efficiently inhale only fats and oils.
In addition, since the float body connected to the bellows hose is used in the apparatus of Patent Document 2, the position of the suction port can be maintained near the water surface even if the height of the drainage surface changes. As a result, moisture in the lower part is sucked from the surface at a considerable rate.
Furthermore, although the apparatus of Patent Document 3 does not use a bellows, since the float and the suction port are integrated, the height of the suction port varies due to the vertical fluctuation of the float, and a considerable amount of moisture from the surface to the lower part. You will inhale at a rate.

  The present invention solves the above-described conventional problems, high-purity oil recovery means for recovering high-purity oil from food sludge drainage, and high-purity oil from waste liquid containing food sludge, Providing a mud recovery device for foods that collects solids is an issue to be solved.

The present invention is as follows.
1. A drainage tank for storing drainage liquid containing food sludge, an oil / water separation means provided in the drainage tank for separating oil and fat from the drainage, and provided on the downstream side of the oil / water separation means A high-purity oil recovery means comprising: a floating-material removal means for removing a floating substance from a minute and recovering a high-purity oil,
The oil / water separating means includes a suction pipe standing vertically to the liquid surface, a funnel-shaped conical part that is loosely inserted into the suction pipe and has an enlarged diameter upward, and a straight pipe part connected to the lower end of the conical part A funnel member composed of: elevating means capable of moving the funnel member up and down in the vertical direction;
By raising the funnel member filled with drainage in the conical portion by the elevating means, from the gap formed between the inner surface of the straight tube portion and the outer surface of the suction tube to the lower end of the straight tube portion The high-purity oil is characterized in that after draining the water in the drainage through the provided outflow part, the funnel member is further raised to collect the oil and fat in the drainage in the suction pipe. Collection means.
2. The upper surface of the upper end of the suction port of the suction pipe forms an inclined surface that expands upward, and the inclined surface and the inclined surface of the conical portion of the funnel member are at substantially the same angle with respect to the horizontal direction. Inclined High-purity oil recovery means described in 1.
3. The upper end portion is formed to protrude outward and the upper portion of the straight pipe portion is formed to protrude inward of the tube, thereby preventing oil and fat from flowing out of the gap. High-purity oil recovery means described in 1.
4). At the lower end of the straight pipe part, a guide part for guiding the raising and lowering of the funnel member is slidably formed so as to be slidable with respect to the suction pipe. To 3. The high-purity oil recovery means according to any one of the above.
5). The lifting means includes a support member formed by bridging the upper end of the funnel member, a first rod fixed to the support member, a second rod connected to the upper end of the first rod, and the second rod. A motor that is driven to rotate via a crankshaft,
A first shaft hole provided at an upper end of the first rod is pivotally supported by a shaft provided at a lower end of the second rod, and a second shaft hole provided at the upper end of the second rod is a tip shaft of the crankshaft. Supported by
Either the first shaft hole or the second shaft hole is a long hole having a wide width in the vertical direction. To 4. The high-purity oil recovery means according to any one of the above.
6). The floating substance removing means includes a floating substance removing filter and a cylinder pump provided on the downstream side of the floating substance removing filter. To 5. The high-purity oil recovery means according to any one of the above.
7). A recovery tank for recovering the high-purity oil is further provided on the downstream side of the cylinder pump, and the recovery layer is composed of a plurality of tanks partitioned by a partition plate, and is upstream of the tank where the high-purity oil is partitioned. 6. It is constructed so as to overflow to the downstream side, and sequentially overflows to recover high purity oil with higher purity in the tank provided on the most downstream side. High-purity oil recovery means described in 1.
8). It is a food sludge collecting device that collects solids from waste liquid containing food sludge in the drainage tank and collects high-purity oil, and transports sludge-containing wastewater near the bottom of the drainage tank. A sediment recovery means for removing the sediment from the sediment sludge-containing waste liquid by having a cylinder pump that performs the above operation and a sediment removal filter that removes the sediment in the sediment sludge-containing waste liquid; To 7. A high-purity oil recovery means according to any one of the above, and a food sludge recovery device.

The high-purity oil recovery means of the present invention is connected to a suction pipe standing upright perpendicular to the liquid surface, a funnel-shaped conical part that is loosely inserted into the suction pipe and expands upward, and a lower end of the conical part. A funnel member comprising a straight pipe portion; and elevating means for elevating the funnel member in the vertical direction.
With this configuration, by raising the funnel member filled with drainage inside the conical part, first, from the gap formed between the inner surface of the straight pipe part and the outer surface of the suction pipe due to the gravity of large specific gravity, It is discharged through the outflow part provided at the lower end of the straight pipe part.
And after discharging | emitting water | moisture content, the said fat and oil part can be collect | recovered inside the suction pipe by raising the said funnel member further.

The upper surface of the upper end of the suction port of the suction pipe forms an inclined surface that expands upward, and the inclined surface and the inclined surface of the conical portion of the funnel member are inclined at substantially the same angle with respect to the horizontal direction. When the oil and fat content is present, the oil and fat content can be improved, so that the oil and fat content can be efficiently recovered.
The upper end portion is formed so as to protrude outward, and the upper portion of the straight pipe portion is formed so as to protrude in the pipe inner direction, thereby narrowing a gap formed between the inner surface of the straight pipe portion and the outer surface of the suction pipe. It is possible to prevent outflow of oil and fat having a viscosity higher than that of moisture.

When a guide portion for guiding the raising and lowering of the funnel member slidably with respect to the suction pipe is formed at the lower end of the straight pipe portion, the funnel member is raised and lowered without being inclined with respect to the suction pipe. Can do.
The elevating means includes a support member formed by bridging the upper end of the funnel member, a first rod fixed to the support member, a second rod connected to the upper end of the first rod, and the second rod via the crankshaft. A first shaft hole provided at the upper end of the first rod is pivotally supported by a shaft provided at the lower end of the second rod, and a second shaft hole provided at the upper end of the second rod is provided. When the first shaft hole or the second shaft hole is a long and wide hole in the vertical direction, the oil and fat content is collected in the conical part of the funnel member. In this case, the state in which the support member is in contact with the upper end of the suction pipe can be temporarily maintained. By carrying out like this, when drainage flows into a funnel member, the fluctuation | variation of the drainage near a funnel member can be suppressed and the collection | recovery efficiency of fats and oils can be improved.

In the case where the suspended matter removing means comprises a suspended matter removing filter and a cylinder pump provided on the downstream side of the suspended matter removing filter, the suspended matter removing means removes suspended matter from the oil and fat, High purity oil can be obtained efficiently.
A recovery tank for recovering high-purity oil is further provided on the downstream side of the cylinder pump, and the recovery layer is composed of a plurality of tanks partitioned by partition plates, and the upstream side of the tank where the high-purity oil is partitioned from the downstream side. If the high-purity oil is recovered in a tank that is sequentially overflowed and provided on the most downstream side, the high-purity oil with higher purity can be recovered.

  According to the food sludge recovery apparatus of the present invention, it has a cylinder pump for transporting the sediment sludge containing waste liquid near the bottom of the drain tank and a sediment removal filter for removing the sediment in the sediment sludge containing waste liquid. And a high-purity oil recovery means according to any one of claims 1 to 7, comprising: a sediment recovery means for removing the precipitate from the sediment sludge-containing effluent; In addition to recovering high-purity oil from the effluent containing, solids can be recovered.

It is explanatory drawing explaining operation | movement of an oil-water separation means according to the Example of this invention. It is explanatory drawing following the explanatory drawing of FIG. 1 about the operation | movement of an oil-water separation means according to the Example of this invention. It is typical sectional drawing which shows the principal part of the oil-water separation means concerning the Example of this invention. It is a typical perspective view which shows operation | movement of the oil-water separation means according to the Example of this invention. It is a typical perspective view which shows operation | movement of the oil-water separation means according to the Example of this invention. It is a typical perspective view which shows operation | movement of the oil-water separation means according to the Example of this invention. It is a typical perspective view which shows operation | movement of the oil-water separation means according to the Example of this invention. It is typical sectional drawing which shows an example at the time of installing the oil-water separation means in the drainage tank concerning the Example of this invention. It is a schematic diagram which shows the part except the oil-water separation means of the food sludge collection | recovery apparatus which concerns on the Example of this invention.

Hereinafter, the present invention will be described in detail with reference to FIGS. In addition, this invention is not restricted to what is shown to the specific example described in this figure, It can be set as various changes according to the objective and the use.
In the present invention, the “solid content” is a residue excluding liquid components such as water and oil, and is a suspended matter, a precipitate, etc. in food sludge. Examples of the properties include lumps and powders as solids, and those made muddy by mixing these with liquid components such as water and oil.

[1] High-purity oil recovery means The high-purity oil recovery means of the present invention separates oil and fat from the drainage tank for storing wastewater consisting of food sludge and the drainage tank provided in the drainage tank. Oil-water separation means, and suspended matter removal means provided on the downstream side of the oil-water separation means for removing suspended matters from the oil and fat and recovering high-purity oil.

The “drainage tank” is charged with drainage liquid made of food, and after removing sludge and fats and oils, purified water is discharged to the outside. Usually means a grease trap tank in a restaurant or the like. The drainage tank may be composed of only one tank, but is preferably composed of a plurality of continuous tanks. For example, the drainage tank 80 shown in FIG. 8 includes a first tank 80a, a second tank 80b, and a first tank 80c.
After the sludge drainage 50 is poured into the first tank 80a from the sludge inflow pipe 81, the sludge that has been purified by removing the sludge and fats and oils flows into the second tank 80b and further drained. Flows into the second tank 80b from the second tank 80b, and the drained liquid that has been almost purified only with water is discharged from the outflow pipe 85 to the outside.

The “oil-water separation means” is a means for separating fats and oils from waste liquid, a suction pipe standing upright perpendicular to the liquid surface, and a funnel-like shape that is loosely inserted into the suction pipe and expands upward. A funnel member comprising a conical portion of the conical portion and a straight pipe portion connected to the lower end of the conical portion, and elevating means for allowing the funnel member to be raised and lowered in the vertical direction, and filling the inside of the conical portion with drainage liquid Further, the funnel member is lifted by the lifting and lowering means, so that a gap formed between the inner surface of the straight pipe portion and the outer surface of the suction pipe is passed through an outflow portion provided at the lower end of the straight pipe portion. After the moisture is discharged, the funnel member is further raised to collect the oil and fat in the drained liquid in the suction pipe.
For example, as shown in FIG. 1, a suction pipe 11 erected vertically to the liquid surface, a funnel member 15 loosely inserted in the suction pipe 11, and an elevating means 40 that allows the funnel member 15 to move up and down are provided. ing.

The “suction pipe” is a member that is formed so as to stand perpendicular to the liquid surface and sucks oil and fat from the upper part thereof. This “fat and fat” is a suspended matter and oil of food sludge drainage, and includes a solid matter as a suspended matter in addition to an oily component as a liquid. Also included are those that contain moisture and other components to some extent.
For example, like the suction pipe 11 shown in FIG. 3, the upper surface of the upper end portion 11a of the suction port forms an inclined surface 11a1 that expands upward, and the inclined surface 11a1 and the inclined surface of the conical portion 16 of the funnel member. 16a is preferably inclined at substantially the same angle with respect to the horizontal direction. By doing so, as shown in FIGS. 1 (3) and 2 (4), the oil and fat can easily flow into the suction pipe 11.

  The “funnel member” is composed of a funnel-shaped conical part that is loosely inserted into the suction pipe and expands upward, and a straight pipe part connected to the lower end of the conical part. For example, as shown in FIG. 3, the funnel member 15 includes a funnel-shaped conical portion 16 whose diameter is increased upward and a straight pipe portion 17 connected to the lower end of the conical portion. With this configuration, moisture can be discharged from the gap 19 between the suction pipe 11 and the funnel member 15 through the outflow portion 17c.

  As shown in FIG. 3, the upper end portion 11 a of the suction pipe 11 is preferably formed to protrude outward, and the upper portion 17 a of the straight pipe portion 17 of the funnel member 15 is preferably formed to protrude in the pipe inner direction. . By setting the gap 19 narrow, the oil and fat can be prevented from flowing out of the gap 19 due to the viscosity of the oil and fat. The gap 19 formed by the outer surface 11a2 of the upper end portion 11a and the protruding surface 17a1 of the upper portion 17a of the straight pipe portion 17 is usually preferably about 0.1 to 0.2 mm, although depending on the type of food sludge. .

  It is preferable that a guide portion that guides the raising and lowering of the funnel member is slidably formed at the lower end of the straight pipe portion so as to be slidable relative to the suction pipe. For example, at the lower end of the straight pipe part of the funnel member 15 shown in FIG. For this reason, the funnel member 15 can be raised / lowered without inclining with respect to the suction pipe 11, and the outflow of the oil and fat pumped up to the conical part 16 can be prevented.

The “elevating means” is not particularly limited as long as it is a means for reciprocating the state from the state in which the funnel member is submerged in the drainage to the state in which the oil and fat is collected in the suction pipe. It doesn't matter.
The elevating means includes a support member formed by bridging the upper end of the funnel member, a first rod fixed to the support member, a second rod connected to the upper end of the first rod, and a crank for the second rod. A first shaft hole provided at the upper end of the first rod is supported by a shaft provided at the lower end of the second rod, and provided at the upper end of the second rod. It is preferable that the second shaft hole is pivotally supported by the crankshaft, and either the first shaft hole or the second shaft hole is a long hole having a wide width in the vertical direction.

For example, the lifting means 40 shown in FIG. 1A is connected to the support member 41 formed by bridging the upper end of the funnel member 15, the first rod 42 fixed to the support member, and the upper end of the first rod 42. A first shaft hole 42 h provided at the upper end of the first rod 42 is formed at the lower end of the second rod 43. A second shaft hole 43h provided at the upper end of the second rod is supported by the provided shaft 43p, and is supported by the tip shaft 44p of the crankshaft 44. The second shaft hole 43h is a long hole having a wide width in the vertical direction. It is. In this lifting / lowering means 40, the second shaft hole 43h is a long hole, but the first shaft hole 42h may be a long hole.
Thus, even if either the 1st shaft hole or the 2nd shaft hole is a long hole, even if the crankshaft 44 rotates from the state of FIG. 2 (5) to the state of (6), a support member The state where 41 is in contact with the tip of the upper end portion 11a of the suction pipe 11 can be temporarily maintained. By carrying out like this, when drainage flows into a funnel member, the fluctuation | variation of the drainage near a funnel member can be suppressed and the collection | recovery efficiency of fats and oils can be improved.

(Operation)
The operation of the oil / water separation means will be described below. The operation of the oil / water separation means includes a first step of collecting the fat and oil in the upper layer of the drainage tank in which the waste liquid is stored, a second step of removing the water, and a first step of collecting the fat and oil. 3 steps. This will be specifically described with reference to FIGS.

The rotation of the motor 45 proceeds in the order of FIGS. 1 (1), (2), (3), FIGS. 2 (4), (5), and (6) to constitute one cycle. The state of FIG. 2 (6) is the same as the state of FIG. 1 (1).
(First step)
As shown in FIGS. 1A and 4, the funnel member 15 is immersed in the drainage until the support member 41 contacts the upper end of the suction pipe 11. Then, the oil / fat 51 in the upper layer part of the drainage tank and the water 52 in the lower layer of the oil / fat 51 flow into the funnel member 15 at the same time.

(Second step)
As shown in FIGS. 1B and 5, when the funnel member 15 rises due to the rotation of the motor 45, moisture 52 having a specific gravity greater than the oil and fat content 51 is discharged from the gap between the funnel member 15 and the suction pipe 11 and flows out. It flows out from the part 17c.
As the moisture 52 is discharged, the funnel member 15 rises, and the gap between the funnel member 15 and the suction pipe 11 is further narrowed. As shown in FIG. 3, when the funnel member 15 rises to a position where the gap 19 is formed by the outer surface 11 a 2 of the upper end portion 11 a and the projecting surface 17 a 1 of the upper portion 17 a of the straight pipe portion 17, Due to the viscosity, the fat and oil hardly flows out. The gap 19 is preferably 0.1 to 0.2 mm.
In the inventor's experiments, when the inner diameter of the projecting surface 17a1 was 36.0 mm and the outer diameter of the outer surface 11a2 was 35.8 mm (that is, the gap was 0.1 mm), it was confirmed that the oil and fat hardly flowed out.

(Third step)
As shown in FIGS. 1 (3) and 6, oil and fat accumulated on the conical portion of the funnel member 15 and the upper end portion of the suction pipe are sent out by the inclined surface of the conical portion as the funnel member 15 rises. Then, it is collected inside the suction pipe 11.
As shown in FIG. 2 (4), when the inclined surface of the funnel member conical portion and the inclined surface of the upper end portion of the suction pipe are inclined at substantially the same angle with respect to the horizontal direction, these inclined surfaces are As a result, the remaining oil and fat 51 can be more reliably collected in the suction pipe.

  After the third step, as shown in FIG. 2 (5), the funnel member 15 is lowered again by the rotation of the motor until the lower end of the support member 41 comes into contact with the upper end portion of the suction pipe 11a. By doing so, the drainage can flow again into the funnel member. Further, even if the motor is rotated, as shown in FIG. 2 (6), the lower end of the support member 41 remains in contact with the upper end portion of the suction pipe 11a due to the effect of the long hole 43h. Since the effect of the long hole 43h is as described above, the description thereof is omitted.

In addition to the above-described embodiment, for example, the “elevating means” may be configured such that a chain-like chain is attached to the support member 41 and the chain is moved up and down by the crankshaft 44. Even if the crankshaft 44 rotates due to the slack of the chain, the state in which the support member 41 is in contact with the tip of the upper end portion 11a of the suction pipe 11 can be temporarily maintained. According to this method, it is not necessary to use a long hole as in the above-described embodiment, and the parts can be simplified.
As described above, the lifting means has various configurations in addition to these, and is not limited to these embodiments.
Further, by using a chain, a guide member is provided below the funnel member 15, and the lower end of the funnel member abuts on the upper surface of the guide member, so that the support member 41 is the tip of the upper end portion 11 a of the suction pipe 11. Even if it does not depend on the method to contact | abut, it can aim at the temporary stop of a funnel member.
Thus, the means for temporarily stopping the funnel member is not limited to the above method as long as it has the same effect, and various other methods can be adopted.

As shown in FIGS. 4-7, it is preferable that the cylindrical guide member 95 which guides the raising / lowering of the funnel member 15 is provided. By doing so, the funnel member 15 can be moved up and down without swinging.
The guide member is not limited to those shown in these drawings, and various means can be adopted as long as the guide member has a function of guiding the raising and lowering of the funnel member 15.

The “floating matter removing means” is a means which is provided on the downstream side of the oil / water separating means and removes the suspended matter from the oil and fat to recover high purity oil.
The “floating matter” is mainly a solid content floating in the upper layer portion of the drainage liquid, but also includes those containing liquids such as moisture and oil and mixtures thereof. For example, the sunbeams discharged from a restaurant can be cited as an example.
The suspended matter removing means is not particularly limited as long as the suspended matter can be removed. For example, as shown in FIG. 9, the suspended matter removing filter 21 and a cylinder pump 25 provided on the downstream side of the suspended matter removing filter 21 , Can consist of.
The cylinder pump 25 is preferably provided on the downstream side of the suspended matter removal filter 21. By doing so, the inflow of solids such as suspended matter into the cylinder pump 25 can be avoided, which hinders the operation of the pump. Nothing to do.

  The suspended matter removal filter 21 is provided with a mesh-like filter material, and the material is not particularly limited as long as the suspended matter can be removed by filtering. The roughness of the filter material depends on the type of drainage. Various types can be selected.

The cylinder pump 25 sucks the oil and fat discharged to the suction pipe 11 (see FIG. 1) through an oil and fat collection pipe 92 connected to the suction pipe 11. And while removing the suspended | floating matter 51b by the suspended | floating matter removal filter 21, it plays the role which forms the flow until it collect | recovers the high purity oil 51a.
The cylinder pump 25 is driven by a motor 26, and is a pump having a structure for sending out the drained liquid by repeating suction and discharge by a piston 25c provided in the cylinder 25a and reciprocating. That is, when inhaling, the suction valve 25a1 is opened, and when sending out, the suction valve 25a1 is closed and the discharge valve 25b1 is opened to discharge the drainage.
The cylinder pump has a feature that even if air is sucked in, there is no liquid feeding trouble due to air suction.
The cylinder pump 25 may be operated at all times, but can be operated intermittently every time a certain amount of oil or fat is accumulated in the suction pipe 11.

A recovery tank for recovering the high-purity oil is further provided on the downstream side of the cylinder pump, and the recovery layer is composed of a plurality of tanks partitioned by a partition plate, and is upstream of the tank where the high-purity oil is partitioned. It is preferable that the high-purity oil with higher purity is recovered in a tank which is configured to overflow from the tank to the downstream side, and which overflows sequentially and is provided on the most downstream side.
For example, as shown in FIG. 9, a recovery tank 70 for recovering high-purity oil is further provided on the downstream side of the cylinder pump 25, and the recovery tank 70 is a tank 71 partitioned by a partition plate partitioned by a partition plate, 72. The high purity oil 51 a is configured to overflow from the partitioned tank 71 to the downstream tank 72, further overflowed from the tank 72, and further supplied to the recovery tank 73 via the recovery pipe 78. Can be recovered.
On the other hand, water having a large specific gravity accumulated in the lower layer of the tank 71 can be led to the water recovery tank 74 to be overflowed and discharged to the outside through the water recovery pipe 75.

[2] Food sludge collecting device The food sludge collecting device of the present invention is a food sludge collecting device that collects solids from waste liquid containing food sludge in a drainage tank and collects high-purity oil. There,
The precipitation from the sediment sludge containing waste liquid by having a cylinder pump for transporting the sediment sludge containing waste liquid near the bottom of the drain tank and a sediment removal filter for removing the sediment in the sediment sludge containing waste liquid. And a high-purity oil recovery means.

Regarding the “drainage tank”, the contents in the high-purity oil recovery means of the above [1] are applied as they are, and the description thereof is omitted.
The “solid content” is a solid content in the entire waste liquid containing sludge, and includes both suspended matters in the fats and oils in the vicinity of the liquid surface of the waste liquid and precipitates in the sediment sludge in the vicinity of the bottom of the drainage liquid. .
For example, the suspended matter 51b and the precipitate 53b shown in FIG. 9 are solid contents, and both of these solid contents can be recovered and processed as incombustible substances.
For example, as shown in FIG. 9, the “precipitate collecting means” includes a cylinder pump 35 for transporting the sediment sludge containing drainage liquid near the bottom of the drainage tank, and a sediment for removing the sediment from the sediment sludge containing drainage liquid. A removal filter 31.

The “cylinder pump 35” has the same configuration and operational effects as the “cylinder pump 25”, and thus the description thereof is omitted.
As shown in FIG. 9, the cylinder pump 35 is preferably provided on the downstream side of the sediment removal filter 31. By doing so, it is possible to prevent the high-purity oil from which the precipitate has been removed by the precipitate removing filter 31 from flowing into the cylinder pump 35 and prevent the pump from being hindered. it can.
The “high-purity oil recovery means” has the same configuration and function as the high-purity oil recovery means of [1], and the description thereof will be omitted.

(Operation)
The operation of the food sludge collecting apparatus of the present invention will be specifically described below.
For example, as shown in FIG. 8, the sediment recovery means passes a sediment sludge containing drainage liquid containing sediment sludge 53 that precipitates near the bottom of the first tank 80 a of the drainage tank 80 through a sediment sludge recovery pipe 91. Then, as shown in FIG. 9, the precipitate 53 b is filtered by the precipitate removing filter 31 in the precipitate removing tank 30. Then, the water 53a as the drainage is discharged to the outside through the discharge pipe 38 via the piston pump 35.
Further, the high-purity oil can be recovered from the oil and fat in the vicinity of the liquid surface of the drainage tank 80 by the high-purity oil recovery means. Since the operation of the high purity oil recovery means is as described above, the description thereof is omitted.

  The high-purity oil collecting means and the food sludge collecting apparatus equipped with the high-purity oil collecting device of the present invention are suitably used in the field of drainage treatment technology in the field of the restaurant industry such as restaurants and fast food restaurants.

DESCRIPTION OF SYMBOLS 1; Food sludge collection | recovery apparatus, 10; Oil-water separation means, 11; Suction pipe, 11a; Upper end part, 11a1; Upper end part upper surface, 15: Funnel member, 16; Conical part, 16a; 17a; upper part of straight pipe part, 17b; guide part, 17c; outflow part, 19; gap, 21; suspended matter removal filter, 25, 35; cylinder pump, 31; sediment removal filter,
40; lifting means, 41; support member, 42; first rod, 42h; second shaft hole, 43; second rod, 43p; shaft, 44; crankshaft, 44p; Liquid, 51; Oil and fat content, 51a; High purity oil, 51b; Suspended matter, 53b; Precipitate, 70; Recovery tank, 80; Drainage tank

Claims (8)

A drainage tank for storing drainage liquid containing food sludge, an oil / water separation means provided in the drainage tank for separating oil and fat from the drainage, and provided on the downstream side of the oil / water separation means A high-purity oil recovery means comprising: a floating-material removal means for removing a floating substance from a minute and recovering a high-purity oil,
The oil / water separating means includes a suction pipe standing vertically to the liquid surface, a funnel-shaped conical part that is loosely inserted into the suction pipe and has an enlarged diameter upward, and a straight pipe part connected to the lower end of the conical part A funnel member composed of: elevating means capable of moving the funnel member up and down in the vertical direction;
By raising the funnel member filled with drainage in the conical portion by the elevating means, from the gap formed between the inner surface of the straight tube portion and the outer surface of the suction tube to the lower end of the straight tube portion The high-purity oil is characterized in that after draining the water in the drainage through the provided outflow part, the funnel member is further raised to collect the oil and fat in the drainage in the suction pipe. Collection means.   The upper surface of the upper end of the suction port of the suction pipe forms an inclined surface that expands upward, and the inclined surface and the inclined surface of the conical portion of the funnel member are at substantially the same angle with respect to the horizontal direction. The high-purity oil recovery means according to claim 1, which is inclined.   The high end according to claim 2, wherein the upper end portion is formed to protrude outward and the upper portion of the straight pipe portion is formed to protrude toward the inside of the tube, thereby preventing oil and fat from flowing out of the gap. Purity oil recovery means.   4. The height according to claim 1, wherein a guide portion that guides the raising and lowering of the funnel member is slidably formed at the lower end of the straight pipe portion so as to be slidable with respect to the suction pipe. Purity oil recovery means. The lifting means includes a support member formed by bridging the upper end of the funnel member, a first rod fixed to the support member, a second rod connected to the upper end of the first rod, and the second rod. A motor that is driven to rotate via a crankshaft,
A first shaft hole provided at an upper end of the first rod is pivotally supported by a shaft provided at a lower end of the second rod, and a second shaft hole provided at the upper end of the second rod is a tip shaft of the crankshaft. Supported by
5. The high-purity oil recovery means according to claim 1, wherein one of the first shaft hole and the second shaft hole is a long hole that is wide in a vertical direction.   The high-purity oil according to any one of claims 1 to 5, wherein the suspended matter removing means includes a suspended matter removing filter and a cylinder pump provided on the downstream side of the suspended matter removing filter. Collection means.   A recovery tank for recovering the high-purity oil is further provided on the downstream side of the cylinder pump, and the recovery layer is composed of a plurality of tanks partitioned by a partition plate, and is upstream of the tank where the high-purity oil is partitioned. The high-purity oil recovery means according to claim 6, wherein the high-purity oil recovery means is configured to overflow from the tank to the downstream side and to recover the higher-purity oil having higher purity in a tank that is sequentially overflowed and provided on the most downstream side. A food sludge collecting device that collects solids from waste liquid containing food sludge in a drainage tank and collects high purity oil,
The precipitation from the sediment sludge containing waste liquid by having a cylinder pump for transporting the sediment sludge containing waste liquid near the bottom of the drain tank and a sediment removal filter for removing the sediment in the sediment sludge containing waste liquid. A food sludge collecting apparatus comprising: a sediment collecting means for removing a substance; and the high-purity oil collecting means according to any one of claims 1 to 7.

Images