JPH0734086A - Recovery of oil adhered to ground waste such as stainless steel and apparatus for recovering oil on ground waste - Google Patents

Abstract

PURPOSE:To recover oil adhered to a ground waste such as stainless steel, etc., continuously and efficiently without any leak to outside of an apparatus. CONSTITUTION:This recovery method consists of a first oil separation process where a ground waste 4 such as stainless steel, etc., adhered with oil is compressed, the oil is separated and a material to be dry-distilled 7 is formed, a transfer process where the material to be dry-distilled 7 is transferred to a dry distillation process, a dry distillation process where a heating furnace 8 is provided along the line and the material to be dry-distilled 7 is dry-distilled by transferring from the inlet to the outlet the material to be dry-distilled 7 arranged in a row by pushing in order the material 7 transferred from the transfer process with a squeezing pusher 13 into a long dry distillation column 11 provided with intermittently working air tight intercepting shutters 9 and 10 respectively at an inlet and an outlet, and heating the heating furnace 8, a second oil separation process where the oil is separated by cooling a dry-distilled gas 14 generated in the dry distillation process and a post-treatment process where the material to be dried 7 excreted from the outlet of the dry distillation column 11 is cooled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil component attached to grinding scraps such as stainless steel capable of recovering cutting oil adhering to stainless grinding scraps generated when polishing a stainless steel plate for reuse. And a grinding waste oil recovery device.

[0002]

2. Description of the Related Art Conventionally, stainless steel grinding chips to which cutting oil adheres are compressed to separate oil, and then the compressed mass is
It was put in a drying pot and heated to dry-distill to perform thermal decomposition, and the generated gas was cooled to recover oil.

[0003]

However, in the conventional method, since it is necessary to dry-distill the compressed lumps in the drying pot in a batch process, a series of operations can be continuously performed. Therefore, there is a problem that automation cannot be performed.

Therefore, according to the present invention, the oil adhering to the grinding dust of stainless steel or the like can be continuously continuously automated, and moreover, the oil can be efficiently collected without leakage to the outside of the apparatus. It is an object of the present invention to provide a method for recovering oil content attached to scraps and a grinding scrap oil content recovery device.

[0005]

In order to achieve the above object, a primary oil separation step of compressing grinding scraps such as stainless steel having oil adhered to separate oil and molding a material to be dried; A transfer step of feeding the material to be dry-distilled into the dry distillation step; into the long dry distillation cylinder having a heating furnace in the middle and provided with an airtight shut-off shutter which is intermittently operated at the inlet and the outlet, in the transfer step A dry distillation process in which the dry matter to be dried is pushed in order by a pusher to move the whole dry matter to be arranged in a line from the inlet side to the outlet side, and the dry matter is dry distilled by heating the heating furnace; It comprises a secondary oil separation step of separating oil by cooling the dry distillation gas generated in the dry distillation step; and a post-treatment step of cooling the material to be dried discharged from the outlet of the dry distillation tube.

Also, in order to achieve the above-mentioned object,
A molding press that separates oil by compressing grinding scraps such as stainless steel to which oil adheres and forms a material to be dry-distilled; a transfer means for sending the material to be dry-distilled into the cylinder for dry distillation; in the middle of a long dry-distillation cylinder A heating furnace is installed in the dry distillation tube, and an inlet-side blocking shutter and an exit-side blocking shutter for airtightness that operate intermittently are installed at the inlet and outlet of the carbonization tube, respectively, and a push-pusher that pushes the material to be dried into the inside of the carbonization tube is installed. It comprises a dry distillation device installed; and a cooling means for separating the oil component by sucking the dry distillation gas generated in the dry distillation cylinder by heating the heating furnace and cooling it by a cooler.

Further, due to the effects described later, the material to be dried is formed into a columnar member, and the material to be dried is aligned by the transfer means so that the axes coincide with each other. It is preferable to push it in the axial direction with a pusher in the state of being aligned in a body shape and move the whole body.In addition, the shape of the object to be dried is cylindrical and the shape of the dry distillation tube is cylindrical. Things are especially desirable.

Further, an intermediate shut-off shutter having a sandwiching concave portion closely contacting the surface of the material to be dried aligned in a shaft shape and movable in the radial direction in the dry distillation cylinder is used as a heating furnace outlet and an outlet shut-off shutter. It can also be provided between.

[0009]

As described above, according to the method for collecting the oil adhered to the grinding scraps such as stainless steel and the grinding scrap oil recovery device of the present invention, the grinding scraps such as the stainless steel adhered with the oil are compressed by the forming press machine to obtain the oil content. And to dry the material to be dried, send it to the dry distillation tube inlet of the dry distillation apparatus by the transfer means, open the entrance-side blocking shutter and the exit-side blocking shutter, and then push the dry distillation objects in order with the push-in pusher to dry-dry. The to-be-distilled substances are arranged side by side in a line in the cylinder.After that, the entrance-side blocking shutter and the outlet-side blocking shutter are closed, and the to-be-distilled products in the carbonization-condensing cylinder are heated by the heating furnace, and the generated dry-distilled gas is cooled. Cool the oil to separate the oil, and further open the inlet blocking shutter and the outlet blocking shutter, and then push the material to be dried with the push-in pusher to set it in the dry distillation cylinder. The entire object carbonization product was arranged in the inlet side is moved to the outlet side to discharge the objects to be carbonized product obtained by carbonization from the outlet, it is cause to cool the object to be carbonization product. In this manner, the material to be dry-distilled cooled in this manner can be reused, and at the same time, the oil content recovered by compression of the molding press and the oil content recovered by the dry distillation apparatus and the cooler can be reused as grinding oil or the like.

Further, the material to be dried is formed into a columnar member, and the material to be dried is aligned by a transfer means so that the axes are aligned with each other. When using a pusher that pushes the pusher in the axial direction to move the entire body, make sure that the entire shaft-like thing is aligned and aligned with the axis of the columnar member to be dried. It is possible to move, especially when the shape of the material to be dried is cylindrical and the shape of the dry distillation tube is cylindrical, when the contact surface of the dry distillation tube and the material to be dried is small. It can be moved.

Further, an intermediate shut-off shutter in which a shield having a sandwiching recess closely contacting the surface of the material to be dried aligned in a shaft shape is movable in the radial direction in the dry distillation cylinder is a heating furnace outlet and an outlet shut-off shutter. When it is provided between the intermediate blocking shutter and the intermediate blocking shutter, when the blocking portion of the intermediate blocking shutter is moved, the sandwiching concave portion of the blocking portion is brought into close contact with the surface of the material to be dried aligned in a shaft-like manner to block.

[0012]

The details of the present invention will be described with reference to the embodiments shown in the drawings. First, based on the conceptual diagram of FIG. 1, a description will be given of a method of collecting oil adhered to grinding dust such as stainless steel (hereinafter, simply referred to as oil recovery method) according to a typical embodiment. The oil recovery method comprises a primary oil separation process, a transfer process, a dry distillation process, a secondary oil separation process, and a post-treatment process.

In the primary oil separation step, as shown in FIG. 1, stainless steel grinding dust 4 generated when polishing a stainless steel plate is placed in a core mold 2 of a molding press 3 composed of a mold mold 1 and a core mold 2. The oil content 5 is extracted from the lower side by being charged and compressed by the mold 1 and stored in the reuse oil tank 6, and, for example, the columnar substance 7 to be dried formed by the compression is discharged from the lower side.

In the transfer step, the dried object 7 formed in the primary oil separation step is used with a conveyer, an air cylinder, or the like, or the axis of the dried object 7 is aligned manually by an operator. Thus, the to-be-distilled substances 7 are aligned and sent.

In the carbonization process, a long and cylindrical carbonization process is provided in which a heating furnace 8 is provided in the middle and an inlet-side blocking shutter 9 and an outlet-side blocking shutter 10 for airtightness which operate intermittently at the inlet and the outlet are provided. The cylinder 11 is filled with an inert gas 12 such as nitrogen gas or argon gas, and the to-be-distilled substance 7 fed from the transfer step is axially aligned with a pusher pusher 13 in a state of being aligned like a shaft. It is pushed in to move the whole body from the inlet side to the outlet side, and the material 7 to be dried in the dry distillation cylinder 11 is dry-distilled by the heating of the heating furnace 8. Although not particularly shown in the principle diagram, it is more efficient for the dry distillation to provide an intermediate blocking shutter between the heating furnace 8 outlet and the outlet-side blocking shutter 10 as will be described later in an actual apparatus. It can be performed.

In the secondary oil separation step, the dry distillation gas 14 generated in the dry distillation step is cooled by the cooler 15 to separate the oil.

In the post-treatment step, the substance to be dried 7 discharged from the outlet of the dry distillation cylinder 11 is cooled, and the substance to be dried 7 thus formed is reused as a material such as a stainless steel plate.

In this way, the oil separated in the primary oil separation step and the secondary oil separation step can be recovered and reused as grinding oil or the like, and the material to be dried 7 which has been treated in the post-treatment step. Can be reused as a material for stainless steel plates.

Next, a grinding waste oil recovery device A (hereinafter simply referred to as recovery device A), which is an actual device using the above oil recovery method, will be described.

As shown in the overall flow chart of FIG. 2, the recovery device A comprises a molding press machine 3, a transfer means 16, a carbonization device 17,
The cooling means 18 is the main component.

As shown in FIG. 2, the molding press machine 3 separates the oil content by compressing the stainless grinding dust 4 sent from the raw material hopper 19 through the screw feeder 20, and at the same time, molds the material to be dried 7. And
Specifically, as shown in FIG. 4, it comprises a compressible cylindrical mold 1 and a cylindrical core mold 2. The mold 1 can be moved up and down by a hydraulic cylinder 21, and a rotating plate 22 is provided at the lower end. The core type 2 having the fixed cores is supported on the upper surface of a support plate 25 having a mounting base 24 on a mechanical base 23 so that a discharge space is formed in the center, and the rotary plate 22 is pivoted as shown in FIG. Support plate 25 with wearing bolts 26
The core die 2 is pivotally attached to the core die 2 so as to be rotatable by an air cylinder or the like (not shown), and an extraction hole for dropping the material to be dried 7 downward is formed at a position where the core die 2 is pivoted. An oil draining hole 28 is penetrated through the main body of the mold 1 and an oil draining groove 28 is formed in the bottom surface of the rotating plate 22 in the radial direction. Then, the columnar substance to be dried 7 discharged onto the machine base 23 of the molding press machine 3 is moved to the transfer means 16 by the moving pusher 29 using an air cylinder or the like as shown in FIG. ,
Further, the oil content 5 discharged from the oil drain hole 27 and the oil drain groove 28 is
The oil 5 is sent via a pump 31 to an oil separation tank 30 for overflowing and separating it from water and the like, and the separated oil 5 is stored in a recycled oil tank 6. With this molding press machine 3, the residual oil content of the material to be dried 7 can be recovered to 10% or less.

As the transfer means 16, as shown in FIG. 3, an endless rotating transfer conveyor 33 is used to move the material to be dried 7 sent by the moving pusher 29, and an air cylinder or the like not shown in the drawing is used. By using them, the to-be-distilled substances 7 are aligned so that their axes coincide with each other and fed into the carbonization device 17.

As shown in FIG. 3, the carbonization device 17 has a long cylindrical carbonization cylinder 11 having an inner diameter slightly larger than the outer diameter of the material to be dried 7 installed horizontally, and at the inlet side of the carbonization cylinder 11. The push-pusher 13 is installed, and the heating furnace 8 using the electric heater 34 or by gas heating is provided in the middle of the dry distillation cylinder 11,
An inlet-side shut-off shutter 9 and an outlet-side shut-off shutter 10 for airtightness that operate intermittently are provided at the inlet and the outlet of 11 to maintain a closed state. Further, in the embodiment of the illustrated example, the outlet of the heating furnace 8 and the outlet-side shut-off are shut off. An intermediate blocking shutter 35 is provided between the shutters 10. In the dry distillation cylinder 11, the whole can be moved in a state where the axes of the dry distillation cylinder 11 are aligned with each other and the materials to be dried 7 are aligned in a shaft shape. It is also possible to increase the number of dry distillation tubes 11 in two rows, three rows, and four rows depending on the processing capacity.

As shown in FIG. 6, the push-in pusher 13 pushes the dry matter 7 aligned and fed from the transfer means 16 from the inlet of the dry distillation cylinder 11 beyond the entrance-side blocking shutter 9 to push it. Is provided at the rod tip of the air cylinder.

The entrance-side blocking shutter 9 is shown in FIGS.
Inlet air cylinder 37 that can be pushed and pulled up and down as shown in
The blocking plate 38 fixed to the tip of the rod 37a of the above is incorporated into a vertically movable partition box 39, and is of a size such that it can pass through the dry distillation cylinder 11 below the blocking plate 38 when the material to be dried 7 moves. The passage hole 40 is provided. Therefore, when the blocking plate 38 is located above, the material 7 to be dried can be moved, and when the blocking plate 38 is located below, the inside of the dry distillation cylinder 11 can be blocked.

As shown in FIG. 11, the outlet-side blocking shutter 10 cuts the end face of the dry distillation cylinder 11 obliquely upward, and pivotally attaches the upper part of the lid 42 to the pivot plate 41 provided on the upper surface of the dry distillation cylinder 11, The tip of the connecting plate 44 pivotally attached to the rod of the opening / closing air cylinder 43 installed on the top is fixed to the upper surface of the lid body 42, and the lid body 42 can be freely opened and closed by pushing and pulling the opening / closing air cylinder 43. Is. In this way, since the outlet end face of the carbonization tube 11 is cut obliquely upward, when the lid 42 is opened, the carbonization tube 11 is opened.
The to-be-distilled substance 7 inside can be tilted and dropped certainly.

As shown in FIGS. 9 and 10, the intermediate shut-off shutter 35 is a dry distillation object 7 arranged in the dry distillation cylinder 11 in a shaft-like manner.
Shield having an arcuate upper clamping recess 45 that closely adheres to the surface of the
Rod 47 of intermediate air cylinder 47 that can push and pull 46 up and down
a) An arc-shaped lower holding recess which is fixed to the tip of the guide box 48, enables the shielding portion 46 to move in the radial direction within the dry distillation cylinder 11 in the guide box 48, and also adheres to the bottom surface of the guide box 48 and the surface of the object 7 to be dried. A sandwiching table 50 having 49 is provided, and when the pressing portion 36 is moved downward and sandwiched, the to-be-distilled substances 7 aligned in a shaft-like shape are provided.
It is possible to partition the dry distillation tube 11 in close contact with the surface thereof in a substantially sealed state.

The cooling means 18 is a heating furnace 8 as shown in FIG.
The extraction pipe 51 is extended by communicating with the dry distillation cylinder 11 located inside,
The dry distillation gas 14 is sucked from the extraction pipe 51, and the dry distillation gas 14 is cooled by a cooler 15 such as a gas cooler using the circulating cooling water 52 as a medium.
Is a primary oil separation tank for cooling the oil and pouring out the oil content 5 and comprising a double tank of large and small internal tanks and an external tank, and separating the oil content 5 by overflowing from the internal tank into the external tank.
The oil component 5 is supplied to the inner tank of 30a to separate the oil component 5, which is further overflowed to release the gas into the atmosphere and separated in the secondary oil separation tank 30b. The oil component 5 thus separated is pumped. It is stored in the recovered oil tank 53 at 31. By this cooling means 18, the oil content 5 can be recovered until the residual oil content of the material to be dried 7 is 1% or less.

Further, as shown in FIG. 2, an inert gas 12 such as nitrogen gas is supplied near the outlet of the entrance blocking shutter 9 and the exit of the intermediate blocking shutter 35 in the dry distillation cylinder 11.
A water cooling jacket type cooling chamber 56 using circulating cooling water 55 as a medium is provided on the outer surface of the dry distillation cylinder 11 between the intermediate shutoff shutter 35 and the outlet shutoff shutter 10 so that the water can be supplied through the solenoid valve 54. . In the figure, 57 is a safety valve and 58 is a pressure alarm.

Although the above-mentioned object 7 to be dried has a columnar shape, other various columnar members such as a square columnar shape and a triangular columnar shape can be adopted.
It is preferable to change the shape of the dry distillation cylinder 11 accordingly, and in the above-mentioned recovery device A, the axis of the dry distillation object 7 is aligned and aligned in a shaft body. Of the dry distillation tube 11 without considering the orientation of the
It is also possible to arrange them in a line inside and push the whole with the push-in pusher 13. In the above description, stainless steel grinding scraps are given as an example, but the grinding scraps are not particularly limited and can be applied to grinding scraps of other materials such as copper and steel.

Thus, according to the recovery apparatus A of the representative embodiment of the present invention, when the stainless grinding dust 4 generated when polishing the stainless steel plate is put into the raw material hopper 19 as shown in FIG. When it is sent into the core die 2 of the molding press machine 3 through 20 and the cabinet die 1 is moved downward and compressed, the oil drain hole 27 and the oil drain groove 28 of the core die 2 are
The oil content 5 is poured out from the oil separation tank 30 to be separated, overflowed in the oil separation tank 30 to be separated from water and the like, and the oil content 5 separated by the pump 31 is sent to the reuse oil tank 6 for storage.

Then, the entire core die 2 is rotated with respect to the support plate 25 by an air cylinder or the like, and the columnar substance 7 to be dried, which is molded by the compression of the molding press 3, is taken out from the support plate 25. From the bottom of the transfer conveyor 33 of the transfer means 16 is moved downward by the transfer pusher 29, and the material to be dried 7 is moved upward, so that the axes are aligned with each other by using an air cylinder or the like (not shown). The materials to be dried 7 are aligned and sent to the inlet of the dry distillation cylinder 11. Then, the temperature in the heating furnace 8 is raised to, for example, 550 to 600 ° C., the entrance side blocking shutter 9, the intermediate blocking shutter 35, and the exit side blocking shutter 10 are opened, and then the electromagnetic valve 54 is operated to activate the inside of the dry distillation cylinder 11. Enclose the inert gas 12 in the and press the pusher as shown in Fig. 6.
The material to be dried 7 supplied by the pressing portion 36 at the tip of the rod 13
Is pushed in order from the entrance of the dry distillation cylinder 11 over the entrance-side blocking shutter 9 and the inside is aligned so that the axes of the dry distillation cylinder 11 are aligned with each other and the objects to be dried 7 are aligned in a shaft body. After closing the side shutoff shutter 9, the intermediate shutoff shutter 35, and the exit side shutoff shutter 10, the dry distillation gas 14 generated by dry distillation of the dry distillation target 7 in the dry distillation cylinder 11 by heating of the heating furnace 8 is generated.
Is sucked from the take-out pipe 51, the cooler 15 causes the oil 5 to be poured out, the oil 5 is supplied into the inner tank of the primary oil separation tank 30a and overflows into the outer tank to separate the oil 5, and It is sent to the secondary oil separation tank 30b and overflowed to release gas to the atmosphere to separate the oil component 5,
It is sent to the recovered oil tank 53 by the pump 31 and stored therein.

Further, in a steady state, the inert gas 12 is filled in the dry distillation cylinder 11, and after the entrance side blocking shutter 9, the intermediate blocking shutter 35, and the exit side blocking shutter 10 are opened, the inside of the dry distillation column 11 is opened. When the to-be-distilled material 7 aligned in a shaft shape is pushed by the pushing portion 36 of the pushing pusher 13, the whole is moved to the outlet side, and as shown in FIG. 11, the outlet side is dry-distilled and cooled in the water cooling jacket type cooling chamber 56. The dry matter 7 to be dried falls downward and is stored in the recovery container 59. When the push-in pusher 13 finishes pushing, the entrance-side blocking shutter 9 and the exit-side blocking shutter 10 are closed and the inside of the dry distillation tube 11 is closed. In addition to the closed state, the intermediate blocking shutter 35 also moves the shielding portion 46 downward by the intermediate air cylinder 47 in the direction of the arrow in FIGS.
The surface is sandwiched by the upper sandwiching recessed portion 45 of the shield portion 46 and the lower sandwiching recessed portion 49 of the sandwiching base 50 to be maintained in a substantially sealed state.

Thus, the oil component 5 recovered in the recycled oil tank 6 is reused as grinding oil, and the oil component 5 recovered in the recovered oil tank 53 is reused as fuel or further separated. Then, it can be reused as grinding oil, and further, the material to be dried 7 contained in the recovery container 59 can be reused as a material for the stainless steel plate.

As described above, according to the recovery apparatus A of the representative embodiment of the present invention, after the material 7 to be dried is carbonized by heating the heating furnace 8, the entrance side blocking shutter 9, the intermediate blocking shutter 35, and the outlet are provided. Open the side blocking shutter 10 and dry distillation device 17
When the to-be-to-be-distilled 7 arranged in the dry distillation cylinder 11 in the shaft shape in the above is intermittently pushed by the pressing portion 36 of the push pusher 13, the whole can be moved to the outlet side. By repeating the process, batch operation can be performed using a drying pot as in the conventional case, and continuous operation is possible, efficient work can be performed, and the entire recovery apparatus A can be automated. In addition, the inside of the dry distillation cylinder 11 can be kept in a closed state by the entrance-side blocking shutter 9 and the exit-side blocking shutter 10, and when the intermediate blocking shutter 35 is closed, the surface of the material to be dried 7 aligned in a shaft-like manner. The upper holding recess 45 and the holding base 50 of the shield 46
Since it is sandwiched in the lower sandwiching recess 49 and kept in a substantially sealed state, the heat of the dry distillation cylinder 11 heated by the heating furnace 8 and the heat of the dry distillation cylinder 11 cooled by the water cooling jacket type cooling chamber 56 can be blocked. Therefore, efficient carbonization can be performed.

For the columnar object 7 to be dried, the object 7 to be dried is
Since the cylindrical dry distillation cylinder 11 having an inner diameter slightly larger than the outer diameter of the dry distillation cylinder 11 is used, the contact area between the inner surface of the dry distillation cylinder 11 and the material to be dried 7 becomes small. Further, even if the entire dry object 7 weighs about 1 ton, it is possible to easily move the entire dry object 7 only by the pushing pusher 13.

[0037]

EFFECTS OF THE INVENTION According to the method for recovering oil adhering to grinding scraps such as stainless steel and the grinding scrap oil collecting device according to the present invention, after the dry distillation of the material to be dried is carried out by the heating of the heating furnace, the shutoff shutter on the inlet side is provided. , Open the exit shutter,
It is possible to move the whole to-be-exhausted side by intermittently pushing the whole to-be-distilled objects arranged in a line in the carbonization column in the carbonization device with the push-in pusher. As compared with the case where batch processing is performed using a drying pot as described above, continuous operation is possible, efficient work can be performed, and the entire recovery device can be automated.

A state in which the material to be dried is formed into a columnar member, and the material to be dried is aligned by the transfer means so that the axes coincide with each other, and the material to be dried is aligned in the shape of a shaft in the dry distillation cylinder of the carbonization device. When using a push pusher that pushes in the axial direction to move the entire body, move the entire shaft-shaped object aligned and aligned with the axis of the columnar member to be dried. It is possible to push with a pushing pusher easily without requiring force.In particular, when the shape of the material to be dried is cylindrical and the shape of the carbonization tube is cylindrical, Since it can be moved in a state where the contact surface of the object to be dried and the inside of the cylinder is small, it is possible to more effectively perform the pushing by the pushing pusher.

Between the heating furnace outlet and the outlet shutoff shutter, there is provided an intermediate shut-off shutter in which a shading portion having a sandwiching concave portion closely contacting with the surface of the material to be dried aligned in a shaft shape is movable in the radial direction in the dry distillation cylinder. If it is installed in the heating unit, the shielding recess of the intermediate shielding shutter can be moved by moving the shielding unit so that the sandwiching recess of the shielding unit can be intimately contacted with the surface of the material to be dried aligned in the shape of a shaft so that it can be heated by the heating furnace. The heat of the dry distillation cylinder and the dry distillation cylinder that is cooled on the outlet side can be blocked.
Efficient carbonization can be performed.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a method of recovering oil adhering to grinding dust such as stainless steel in a typical embodiment.

FIG. 2 is a flow chart showing the entire grinding waste oil content collecting apparatus of a representative embodiment.

FIG. 3 is an explanatory view of a carbonization device.

FIG. 4 is a side view of the molding press machine.

FIG. 5 is a longitudinal sectional view showing the main part of the molding press machine.

FIG. 6 is a front view of a partial cross-sectional state of the carbonization tube inlet portion.

FIG. 7 is a vertical sectional view showing a main part of an entrance-side blocking shutter.

8 is a sectional view taken along the line AA in FIG.

FIG. 9 is a vertical cross-sectional view showing a main part of an intermediate blocking shutter.

10 is a cross-sectional view taken along the line BB in FIG. 9.

FIG. 11 is a front view of a partial cross-sectional state of the exit-side blocking shutter.

[Explanation of symbols]

A Grinding waste oil recovery device 1 Cavity type 2 Core type 3 Forming press 4 Stainless steel grinding waste 5 Oil 6 Reused oil tank 7 Dried residue 8 Heating furnace 9 Inlet side blocking shutter 10 Outlet blocking shutter 11 Drying column 12 Inert Gas 13 Push-in pusher 14 Pyrolysis gas 15 Cooler 16 Transfer means 17 Pyrolysis device 18 Cooling means 19 Raw material hopper 20 Screw feeder 21 Hydraulic cylinder 22 Rotating plate 23 Machine base 24 Mounting base 25 Support plate 26 Pivoting bolt 27 Oil drain hole 28 Oil drain groove 29 Moving pusher 30 Oil separating tank 31 Pump 33 Transfer conveyor 34 Electric heater 35 Intermediate shutoff shutter 36 Pressing part 37 Air cylinder on the inlet side 38 Blocking plate 39 Partition box 40 Passage hole 41 Pivoting plate 42 Lid body 43 For opening and closing Air cylinder 44 Connecting plate 45 Upper clamping recess 46 Shield 47 Intermediate air cylinder 48 Guide box 49 Lower clamping recess 50 Clamping stand 51 Extraction pipe 52 Circulating cooling water 53 Osamu tank 54 solenoid valve 55 circulates the cooling water 56 cooled jacket cooling chamber 57 the safety valve 58 pressure alarm 59 collection container

Claims (8)

[Claims] 1. A primary oil separation step of compressing grinding debris such as stainless steel to which oil has adhered to separate oil, and forming a material to be dry-distilled, and a transfer step of feeding the material to be dry-distilled to the dry-distillation step. Inside the long dry distillation column equipped with a heating furnace in the middle and intermittently operating airtight shut-off shutters at the inlet and outlet, the dry matter to be sent in the transfer step was sequentially pushed by a pusher. The entire dry matter to be dried in a row by pushing is moved from the inlet side to the outlet side, and the dry distillation gas for dry distillation of the dry matter by heating the heating furnace is cooled, and the dry distillation gas generated in the dry distillation step is cooled. A secondary oil separation step for separating oil content by means of the above, a post-treatment step for cooling the material to be dry-distilled discharged from the dry distillation tube outlet, and a method for recovering oil content adhering to grinding dust such as stainless steel. 2. A dry distillation object is formed on a columnar member, and the dry distillation object is aligned so that the axes coincide with each other in the transferring step, and the dry distillation object is aligned in a shaft shape in the dry distillation tube in the dry distillation step. The method for recovering the oil adhering to the grinding dust of stainless steel or the like according to claim 1, wherein the pusher is pushed in the axial direction and moved as a whole in the state of being kept. 3. The method for recovering oil adhering to grinding debris such as stainless steel according to claim 2, wherein the material to be dry-distilled has a cylindrical shape and the dry distillation cylinder has a cylindrical shape. 4. An intermediate shutoff shutter in which a shield having a sandwiching recess closely contacting the surface of the material to be dried aligned in a shaft shape is movable in the radial direction in the dry distillation cylinder, is a heating furnace outlet and an outlet shutoff shutter. The method for recovering oil adhering to grinding dust such as stainless steel according to claim 3, which is provided between the two. 5. A molding press for separating oil by compressing grinding dust such as stainless steel to which oil adheres and forming a material to be dry-distilled, and a transfer means for feeding the material to be dry-distilled into a cylinder for dry distillation. A heating furnace is installed in the middle of the dry distillation tube, and an inlet-side blocking shutter and an exit-side blocking shutter for airtightness that operate intermittently are installed at the inlet and outlet of the dry distillation tube, respectively, and the material to be dried is placed inside the dry distillation tube at the inlet. A grinding distillation oil recovery device that includes a dry distillation device equipped with a push-in pusher that pushes the dry distillation gas into the space, and a cooling means that separates the oil by sucking the dry distillation gas generated in the dry distillation cylinder by the heating of the heating furnace and cooling it with a cooler. . 6. The material to be dried is formed into a columnar member, and the material to be dried is aligned by a transfer means so that the axes are aligned with each other, and the material to be dried is aligned in a shaft shape in a dry distillation cylinder of a carbonization device. The grinding waste oil recovery device according to claim 5, wherein the device is pushed in the axial direction with a pusher to move the whole in a state of being kept. 7. The grinding waste oil recovery device according to claim 6, wherein the dry distillation target has a cylindrical shape, and the dry distillation cylinder has a cylindrical shape. 8. An intermediate shut-off shutter having a holding recess having a sandwiching recess closely attached to the surface of the material to be dried and arranged in a shaft shape, which is movable in the radial direction in the dry distillation cylinder. The grinding waste oil recovery device according to claim 7, which is provided between the two.