KR102150768B1 - Heat treatment system with alarm function - Google Patents

Abstract

The present invention relates to a heat treatment system having an alarm function of notifying an operator that the heat treatment product has been changed when the metal products such as bolts, nuts, and screws are continuously heat treated.

Description

Heat treatment system with alarm function

The present invention relates to a heat treatment system having an alarm function of notifying an operator that the heat treatment product has been changed when the metal products such as bolts, nuts, and screws are continuously heat treated.

Metal-processed products such as bolts, nuts and screws are subjected to heat treatment (Quenching, Tempering) to secure the required hardness after exterior molding.

The heat treatment is performed continuously while a quenching process, a washing process, a tempering process, and a packaging process are moved on a conveyor belt.

In addition, in order to pass from the washing process to the tempering process, bolts and nuts fall from the conveyor belt for the washing process to the conveyor belt for the tempering process, as shown in FIG. In some cases, even in the packaging process, mixing may occur if the operator cannot distinguish between bolts and nuts of different product groups. When mixing occurs, the operator has to go through a screening process, which is cumbersome.

Therefore, it is necessary to develop a sensing means capable of distinguishing heat treatment targets of different product groups and allowing workers to recognize them.

Korean Patent Registration No. 10-0932541 Korean Patent Registration No. 10-0587949

Accordingly, the present invention has been conceived to solve the above problems, and an object of the present invention is to have an alarm function that informs the operator that the heat treatment product has been changed when the metal products such as bolts, nuts, and screws are continuously heat treated. It is to provide a heat treatment system.

The problem to be solved of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

To this end, the heat treatment system having an alarm function according to the present invention comprises: a first conveyor belt for transferring a heat treatment object in a state with a spaced space between each product group so that the heat treatment object can be classified by product group (lot); A washing device for washing by spraying water onto the heat treatment object conveyed by the first conveyor belt after a quenching process; A second conveyor belt disposed below the first conveyor belt and transferring the heat treatment object dropped from the first conveyor belt to a tempering furnace; A sensor unit installed on one side of the second conveyor belt and configured to detect a change in the type of the object to be transferred; And an alarm unit for visually or soundly guiding changes of the heat treatment object detected by the sensor unit.

In addition, in the heat treatment system having an alarm function according to the present invention, the first conveyor belt is provided with a plurality of stepped portions extending along the width direction, and an inclined conveying section for conveying while raising the heat treatment object, and the inclined conveying A horizontal transfer section extending horizontally from one end of the section is provided, and the cleaning device comprises a spray nozzle disposed above the inclined transfer section and spraying washing water onto the heat treatment object passing through the inclined transfer section. do.

In addition, in the heat treatment system having an alarm function according to the present invention, the sensor unit is installed on the left and right side surfaces of the second conveyor belt, and the left and right blocking films having insertion holes are formed, a shaft portion fitted into the insertion hole, and an inner side of the shaft portion. A rotation bar bent at an end and disposed on a heat treatment object transferred on the second conveyor belt and rotated according to its height, a sensing bar bent at an outer end of the shaft and rotated in association with the rotation bar, and the position of the sensing bar or It is characterized in that it comprises a proximity sensor that detects motion, and a control unit that controls the operation of the alarm unit by receiving a detection signal of the proximity sensor.

In addition, in the heat treatment system having an alarm function according to the present invention, the proximity sensor sets the position of the sensing bar as the default position when the spaced space passes through the rotation bar and the rotation bar is vertically disposed downward, When detecting that the sensing bar is in the basic position, a detection signal is transmitted to the control unit, and when the proximity sensor detects that the sensing bar is in the basic position, the control unit receives the signal detected by the proximity sensor and the alarm unit It is characterized in that it transmits a control signal to operate.

In addition, in the heat treatment system having an alarm function according to the present invention, further comprising a blocking bar seating device for seating in a spaced apart space of the second conveyor belt, wherein the blocking bar seating device is installed on the upper side of the second conveyor belt. A cylinder; A blocking bar receiving casing coupled to a lower end of the lifting cylinder and accommodating a plurality of blocking bars therein and having an outlet provided at the lower end; An opening/closing unit that opens and closes the outlet; when the proximity sensor detects that the sensing bar is in the basic position, the control unit calculates the moving speed of the second conveyor belt and the distance between the sensing bar and the blocking bar seating device. Thus, the lifting cylinder is controlled to descend into the spaced space, and then the opening/closing part temporarily opens the outlet to drop the blocking bar disposed at the lower end into the spaced space of the second conveyor belt.

In addition, in the heat treatment system having an alarm function according to the present invention, in the inclined conveying section and directly below the inclined conveying section, oil separation for receiving the washing water falling from the first conveyor belt and separating the oil contained in the washing water It is characterized in that the device is installed.

In addition, in the heat treatment system having an alarm function according to the present invention, the oil separation device adsorbs oil while rotating while being partially immersed in a rotating shaft, a motor connected to the rotating shaft, and a rotating shaft connected to the rotating shaft. An oil separation device using a rotating disk including a rotating disk, a scraper for scraping off oil adsorbed by being in close contact with both surfaces of the rotating disk, and an oil collecting unit disposed at the lower end of the scraper to receive the scraped oil. In addition, an oil adsorption groove formed in a concave structure along a circumferential direction is formed in the rim regions of both sides of the rotating disk, and the scraper is characterized in that a protrusion to be inserted into the oil adsorption groove is formed.

Accordingly, the present invention was devised to solve the above problems, and the heat treatment system having an alarm function according to the present invention tells the operator that the heat treatment product has been changed when the metalworked products such as bolts, nuts, and screws are continuously heat treated. Because it informs, it has the effect of preventing mixing between different products in advance.

The effects of the present invention are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a state in which a first conveyor belt is dropped from a first conveyor belt to a second conveyor belt and transferred to a heat treatment furnace.
FIG. 2A is a cross-sectional view showing a state in which an object to be heat treated is transferred to a soryeo furnace in the second conveyor belt of the present invention, and FIG. 2B is a cross-sectional view illustrating a state in which a blocking bar seating device is added to FIG. 2A.
3 is a diagram showing the main configuration of the sensor unit of the present invention.
4 is a view showing a state in which washing is performed on the first conveyor belt of the present invention and the washing water separates oil through an oil separator.
5 is a perspective view showing a main configuration of an oil separation device according to the present invention.
6 is a plan view of FIG. 5.
7 is a longitudinal cross-sectional view showing an automatic height adjustment device installed in the oil separation device of FIG. 5.
8 is a perspective view showing a rotating disk having a structure different from that of FIG. 5.
9 is a perspective view showing a protrusion structure inserted into the oil adsorption groove of the present invention.
10 is an enlarged view showing a state in which a reverse flow prevention jaw is formed on the rotating disk of the present invention.
11 is a perspective view showing a structure of a scraper fitted into an oil adsorption groove in which a backflow bump of FIG. 10 is formed.
12 is a photograph of a heat treatment object being transferred to a tempering process after cleaning in a conventional heat treatment system.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or precedents of operators and operators. Therefore, the definition should be made based on the contents throughout this specification.

FIG. 1 is a perspective view showing a state in which a heat treatment object is dropped from a first conveyor belt of the present invention to a second conveyor belt and transferred to a soryeo furnace, and FIG. 2A is a second conveyor belt of the present invention. It is a cross-sectional view showing a state in which it is transferred, and FIG. 2B is a cross-sectional view illustrating a state in which a blocking bar seating device is added to FIG. 2A. 3 is a view showing the main configuration of the sensor unit of the present invention, and FIG. 4 is a view showing a state in which washing is performed on the first conveyor belt of the present invention and the washing water separates oil through an oil separator.

In the heat treatment system having an alarm function according to the present invention, a heat treatment object is sequentially performed by a quenching process, a washing process, a tempering process, and a packaging process, and the heat treatment object of the present invention is a bolt, nut, screw, etc. Metal parts may be illustrated, but are not limited thereto.

Hereinafter, the main components installed in the process of being supplied to the washing process and the cleaning process will be mainly described.

1 to 4, the heat treatment system having an alarm function according to the present invention transfers a heat treatment object (A) in a state with a spaced space (S) between each product group so that the heat treatment object (A) can be classified by product group (lot). A cleaning device 11 for washing by spraying water on the heat treatment object A transferred by the first conveyor belt 10 after passing through the first conveyor belt 10 and a quenching process, and the A second conveyor belt 12 disposed under the first conveyor belt 10 and transferring the heat treatment object dropped from the first conveyor belt 10 to a tempering furnace T, and the second A sensor unit 200 installed on one side of the conveyor belt 12 to detect a change in the type of an object to be transported, and an alarm to visually or soundly inform the change of the object to be heat treated by the sensor unit 200 It consists of including the unit 210.

The heat treatment object A that has undergone the quenching process is transported on the first conveyor belt 10, and at this time, washing is performed by spraying washing water onto the heat treatment object A in the washing device 11.

The first conveyor belt 10 is provided with an inclined conveying section 10a for conveying while raising the heat treatment object A, and a horizontal conveying section 10b extending horizontally from one end of the inclined conveying section 10a. And, a plurality of stepped portions 10c extending along the width direction are provided.

The stepped portion 10c serves as a support for supporting the heat treatment object from falling when the object to be heat treated rises in the inclined conveying section, and a plurality of stepped portions 10c are provided at regular intervals.

The washing device 11 is disposed on the upper side of the inclined conveying section 10a and spraying the washing water to the heat treatment object A passing through the inclined conveying section 10a, and the spraying nozzle 11a ) May be formed by including a washing water tank 11b and a pump 11c to supply water.

The washing water used for washing is collected to remove the oil contained in the washing water, and the heat treatment object, which has been cleaned, passes through an inclined conveying section and is conveyed along a horizontal conveying section.

On the other hand, the first conveyor belt 10 is transported in a state with a spaced space between each product group so that the heat treatment object can be classified by product group (lot). ') is to prevent mixing with each other. For example, if a bolt is transferred to a conveyor belt for 1 hour and continuously heat-treated, and then the heat treatment object is changed to a nut that is a different product group, the nut is not supplied immediately after the bolt supply is completed on the conveyor belt. In this case, a nut, which is another object of heat treatment, is temporarily not supplied. At this time, a space S is formed between the conveyor belts to distinguish heat treatment objects of different product groups (A, A').

However, even if there is a space between different product groups, if the operator does not clearly recognize it, the heat treatment object falling from the first conveyor belt to the second conveyor belt after washing may be mixed with the heat treatment object on the second conveyor belt. In addition, mixing may occur between different product groups even in the final packaging stage.

Therefore, by providing a sensor unit and an alarm unit, the operator can reliably recognize whether the heat treatment object or product has been changed, and a blocking bar 223 that physically separates the spaced space is installed. By looking at the back, you can prevent product lines from being mixed with each other and packaging.

The sensor unit 200 is installed on the left and right side surfaces of the second conveyor belt 12, the left and right blocking films 201 having insertion holes formed therein, and the second conveyor belt 12 being installed on the left and right blocking films 201 A rotation part 202 that rotates while being caught by the heat treatment object (A) transferred to the top, a proximity sensor 207 that detects the movement of the rotation part 202, and a detection signal of the proximity sensor 207 It may be configured with a control unit 209 that controls the operation of the alarm unit 210. Meanwhile, in the area where the first conveyor belt 10 and the second conveyor belt 12 overlap vertically, the heat treatment object A falling from the first conveyor belt 10 protrudes to the rear of the second conveyor belt 12. A rear blocking plate 14 is installed to block it.

The pivoting part 202 has an approximately'C' shape, and more specifically, the shaft part 203 fitted into the insertion hole, and the second conveyor belt 12 is bent at the inner end of the shaft part 203. ), a rotating bar 204 disposed on the object to be transferred and rotating according to its height, and a sensing bar 205 that is bent at the outer end of the shaft 203 and rotates in conjunction with the rotating bar 204 Can be configured.

The proximity sensor 207 sets the position of the sensing bar 205 to a basic position when the space S passes through the rotation bar 204 and the rotation bar 204 is vertically disposed downward. When it detects that the sensing bar 205 is in the basic position, a detection signal is transmitted to the controller 209.

When the proximity sensor 207 detects that the sensing bar 205 is in the basic position, the control unit 209 receives the signal sensed by the proximity sensor 207 so that the alarm unit 210 operates. It will transmit a control signal.

The alarm unit 210 may be a speaker 211 that provides voice guidance according to a control signal from the control unit 209 or a warning lamp 213 that visually guides by emitting light.

Meanwhile, in the present invention, as shown in FIG. 2B, a blocking bar seating device 220 for seating in the space S of the second conveyor belt 12 may be further included.

The blocking bar seating device 220 is coupled to a lower end of the lifting cylinder 221 installed on the upper side of the second conveyor belt 12 and the lifting cylinder 221 and accommodates a plurality of blocking bars 223 therein. And it may be composed of a blocking bar receiving casing 222 provided with a discharge port 224 at the bottom, and an opening and closing part 225 for opening and closing the discharge port 224.

The opening/closing unit 225 may be illustrated as a pair of left and right cylinders, but is not limited thereto, and any other known means such as a linear electric actuator opening/closing device may be used despite the difference in configuration or name if the outlet can be opened and closed. May be.

At this time, when the proximity sensor 207 detects that the sensing bar 205 is in the basic position, the control unit 209 determines the moving speed of the second conveyor belt 12 and the sensing bar 205 and the blocking bar. By calculating the distance of the seating device 220, the lifting cylinder 221 is controlled to descend close to the surface of the second conveyor belt 12 of the spaced space S, and then the opening and closing part 225 causes the discharge port 224 ) Is temporarily opened and the blocking bar 223 disposed at the lowermost end is controlled to be dropped on the space S of the second conveyor belt 12.

It is preferable that the blocking bar 223 has a rectangular cylindrical shape as a whole, but has a structure in which a corner region is cut in a chamfer manner. Because, when the rod 225a of the cylinder constituting the opening and closing portion 225 momentarily retreats and then advances, only the blocking bar 223 disposed at the lowermost end falls, and the chamfer of the blocking bar 223 disposed thereon This is to ensure that only one blocking bar 223 is discharged while the rod 225a advancing to the region is fitted.

When the blocking bar seating device 220 is installed in this way, it is possible for the operator to eliminate the hassle of installing the blocking bar in the spaced space between heat treatment objects of different product groups. If a blocking bar seating device is installed, the alarm unit that provides notification to workers in the entire continuous heat treatment line may be omitted.

Meanwhile, an oil separation device may be installed in the inclined conveying section and directly below the inclined conveying section to receive the washing water falling from the first conveyor belt and separate oil contained in the washing water.

5 is a perspective view showing a main configuration of an oil separation device according to the present invention, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is a longitudinal sectional view showing an automatic height adjustment device installed in the oil separation device of FIG. to be.

5 to 7, the oil separation device according to the present invention includes a rotating shaft 101, a motor 103 connected to the rotating shaft 101, and a washing water connected to the rotating shaft 101 and mixed with oil. A rotating disk 110 that adsorbs oil while rotating in a partially contained state, a scraper 120 that is in close contact with both sides of the rotating disk 110 to scrape the adsorbed oil, and disposed at the bottom of the scraper 120 It consists of an oil collection unit 130 for accommodating the scraped oil, and an automatic height adjustment device 150.

The rotating disk 110 rotates while being partially impregnated in the tank 135 containing the washing water mixed with oil and adsorbs the oil floating on the washing water.

The depth at which the rotating disk 110 is impregnated may vary depending on the diameter of the rotating disk 110 and the amount of mixed oil.

For example, when the diameter of the rotating disk is 30-50cm and the thickness of the oil is 0.1-2cm, the depth at which the rotating disk is impregnated is preferably impregnated by 1/12 to 1/8 of the diameter of the rotating disk. If the diameter of the rotating disk is less than 1/12, the water level in the tank decreases as the oil is separated, so there is a problem that the rotating disk does not sufficiently contact the oil when the oil is not completely separated. When it exceeds 8, since the impregnation depth of the rotating disk is too deep and most of the impregnated area is immersed in the washing water under the oil, there is a problem that the oil adsorption performance is deteriorated. Therefore, it is preferable to limit it to the above-described range.

The scraper 120 may be made of a material that can be in close contact with the rotating disk 110, for example, rubber or silicone.

In addition, the scraper 120 is fixed to the oil collecting part 130 having a semi-cylindrical shape with a fixing member such as a bolt 131.

At one end of the oil collection unit 130, a recovery pipe 133 for guiding the oil collected by the oil collection unit 130 to the collection container is installed.

The automatic height adjustment device 150 includes a water level sensor 151 installed in a tank 135 for accommodating washing water mixed with oil, an elevating means 152 for raising and lowering the rotary shaft 101, and the water level sensor ( According to the level of the washing water provided from 151, the lifting means 152 may include a control unit 153 that controls the rotation shaft 101 and the rotation disk 110 to be automatically elevated and lowered. Here, the lifting means may be illustrated as a cylinder device, but is not limited thereto.

As the oil is separated and removed from the washing water in the tank 135, the water level changes, and the initial water level in the tank also varies depending on the amount of washing water supplied to the tank 135. The automatic height adjustment device 150 When installed, it is possible to automatically control the height of the rotating disk 110 according to the water level fluctuations.

Fig. 8 is a perspective view showing a rotating disk having a structure different from that of Fig. 5, and Fig. 9 is a perspective view showing a protrusion structure inserted into the oil adsorption groove of the present invention.

8 and 9, the oil separating device 100 according to the present embodiment, unlike the above-described embodiment, has an oil adsorption groove formed in a concave structure along the circumferential direction in the rim regions of both sides of the rotating disk 110. (111) is formed, and the scraper 120 is characterized in that a protrusion 121 inserted into the oil adsorption groove 111 is formed.

The oil adsorption groove 111 serves to increase oil separation and removal performance by increasing a contact area with oil, and is formed in an edge region of the rotating disk 110 that is impregnated with washing water.

The oil adsorption groove 111 is preferably made of a tapered structure that narrows from the surface of the rotating disk 110 to the bottom, which facilitates close contact with the protrusion 121 and the oil adsorption groove 111 due to the slope This is because it is easy to discharge the oil contained within.

The protrusion 121 serves to discharge the oil adsorbed in the oil adsorption groove 111 and has a structure corresponding to the oil adsorption groove 111 in close contact with the oil adsorption groove 111.

The oil adsorption groove 111 may be configured as a plurality of concentric circles, and accordingly, the protrusion 121 may also be configured as a plurality.

The scraper 120 is coupled to the oil collection part 130 and has a cylindrical casing 122 having an opening 122a on one side thereof, and a scraper member 123 inserted into the opening 122a and made of a rubber material. ) Can be illustrated.

The scraper 120 having such a structure has the advantage that only the scraper member 123 in contact with the rotating disk 110 can be easily replaced when necessary.

10 is an enlarged view showing a state in which a backflow bump is formed on the rotating disk of the present invention, and FIG. 11 is a perspective view showing a structure of a scraper fitted into an oil adsorption groove having a backflow bump of FIG. 10.

Referring to FIGS. 10 and 11, in this embodiment, a backflow prevention protrusion 113 for preventing the oil adsorbed from flowing down in the oil adsorption groove 111 of the rotating disk 110 in the reverse direction with respect to the rotational direction of the rotating disk 110 It is characterized in that it is formed. That is, after the rotating disk is impregnated with the washing water mixed with oil, some of the oil adsorbed in the oil absorption groove of the rotating disk may flow downward while rising above the water surface, and the backflow prevention jaw 113 flows down the oil. The amount of oil removed can be increased by temporarily preventing it from falling.

However, when a protrusion made of a rubber material is closely inserted into the oil adsorption groove, it is preferable to change the structure and material of the scraper and the protrusion as described later because there is a problem that the protrusion is caught in the backflow bump.

A fitting groove 124 is formed at one end of the scraper 120 of the present embodiment, and the protrusion 121 is attached to a fixing portion 121a inserted into the fitting groove 124 and one end of the fixing portion 121a. It is preferable that it is made of an elastic sponge 121b that can ride over the backflow prevention jaw 113 and absorb oil.

Since the elastic sponge, which is more elastic than rubber and has superior oil absorption performance, is inserted into the oil absorption groove, the oil in the oil absorption groove can be efficiently removed without great resistance despite the backflow bump.

In addition, the protrusion of the present embodiment has the advantage that it can be easily replaced in case of damage or damage due to the detachable structure of the fixing part and the fitting groove.

Meanwhile, in the detailed description and accompanying drawings of the present invention, specific embodiments have been described, but the present invention is not limited to the disclosed embodiments, and the technical idea of the present invention to those of ordinary skill in the art to which the present invention pertains. Various substitutions, modifications and changes are possible within the range not departing from. Accordingly, the scope of the present invention is limited to the described embodiments and should not be defined, and should be construed as including the claims and equivalents as well as the claims to be described later.

10: first conveyor belt 10a: inclined transfer section
10b: horizontal transfer section 10c: stepped portion
11: washing device 11a: spray nozzle
11b: washing water tank 11c: pump
12: second conveyor belt 14: rear blocking plate
200: sensor unit 201: left and right blocking film
202: rotating part 203: shaft part
204: rotating bar 205: sensing bar
207: proximity sensor 209: control unit
210: alarm unit 211: speaker
213: warning light 220: blocking bar mounting device
221: lifting cylinder 222: blocking bar accommodation casing
223: blocking bar 224: outlet
225: opening and closing part 225a: rod
A: Heat treatment object S: Separated space
T: Soryeuro

Claims (7)

A first conveyor belt that transfers the heat treatment object in a state with a spaced space between each product group so that the object to be heat treated can be classified by product group (lot);
A washing device for washing by spraying water onto the heat treatment object conveyed by the first conveyor belt after a quenching process;
A second conveyor belt disposed below the first conveyor belt and transferring the heat treatment object dropped from the first conveyor belt to a tempering furnace;
A sensor unit installed on one side of the second conveyor belt and configured to detect a change in the type of the object to be transferred;
Including; an alarm unit for visually or soundly guiding the change of the heat treatment object detected by the sensor unit,
The sensor unit,
Left and right blocking films installed on the left and right sides of the second conveyor belt and having insertion holes,
A shaft portion fitted into the insertion hole, a rotation bar bent at an inner end of the shaft portion and disposed on a heat treatment object transferred on the second conveyor belt and rotated according to the height thereof, and a rotation bar bent at an outer end of the shaft portion and Heat treatment having an alarm function, comprising a sensing bar that rotates in conjunction, a proximity sensor that detects the position or movement of the sensing bar, and a control unit that receives a detection signal from the proximity sensor and controls the operation of the alarm unit. system.
The method of claim 1,
The first conveyor belt is provided with a plurality of stepped portions extending along the width direction, an inclined conveying section for conveying while raising the heat treatment object, and a horizontal conveying section extending horizontally from one end of the inclined conveying section, ,
The cleaning device is a heat treatment system having an alarm function, characterized in that it comprises a spray nozzle disposed on the upper side of the inclined transfer section to spray washing water to the heat treatment object passing through the inclined transfer section.
delete The method of claim 1,
The proximity sensor,
When the spaced space passes through the rotation bar and the rotation bar is vertically disposed downward, the position of the sensing bar is set as a basic position, and when detecting that the sensing bar is in the basic position, a detection signal is transmitted to the control unit, and ,
When the proximity sensor detects that the sensing bar is in a basic position, the control unit receives a signal detected by the proximity sensor and transmits a control signal to operate the alarm unit.
The method of claim 4,
Further comprising a blocking bar seating device for seating in the spaced space of the second conveyor belt,
The blocking bar seating device,
An elevating cylinder installed above the second conveyor belt;
A blocking bar receiving casing coupled to a lower end of the lifting cylinder and accommodating a plurality of blocking bars therein and having an outlet provided at the lower end;
Consists of; an opening and closing part for opening and closing the outlet,
When the proximity sensor detects that the sensing bar is in the basic position, the control unit calculates the moving speed of the second conveyor belt and the distance between the sensing bar and the blocking bar seating device, and causes the lifting cylinder to descend into the spaced space. And then controlling the opening and closing unit to temporarily open the discharge port to drop the blocking bar disposed at the lowermost end into the spaced space of the second conveyor belt.
The method of claim 2,
Heat treatment system having an alarm function, characterized in that an oil separating device for receiving the washing water falling from the first conveyor belt and separating the oil contained in the washing water is installed in the inclined conveying section and directly below the inclined conveying section .
The method of claim 6,
The oil separation device,
A rotating shaft, a motor connected to the rotating shaft, a rotating disk connected to the rotating shaft and rotating while partially immersed in washing water mixed with oil, and a rotating disk that adheres to both sides of the rotating disk to scrape the adsorbed oil. As comprising a scraper, and an oil collection unit disposed at the lower end of the scraper to receive the scraped oil,
Oil adsorption grooves having a concave structure along the circumferential direction are formed in the rim regions of both sides of the rotating disk,
Heat treatment system having an alarm function, characterized in that the scraper is formed with a protrusion inserted into the oil adsorption groove.

Images