Oil-water separator for heat treatment production line

Abstract

The invention relates to the technical field of oil-water separation, in particular to an oil-water separator for a heat treatment production line. A pretreatment structure for pretreating and filtering oily wastewater of the heat treatment production line is mounted on the separation rack; the pretreatment structure is connected with a centrifugal separation structure arranged on the separation rack; the centrifugal separation structure comprises a centrifugal outer box, a centrifugal inner box is rotationally assembled on the inner side of the centrifugal outer box, and a transmission hole rod rotationally arranged on the inner side of the centrifugal outer box in a sealed mode is integrally fixed to the middle of the centrifugal inner box. According to the invention, the arc-shaped precipitation bottom box is utilized to guide the impurities after the heat treatment wastewater is precipitated into the plurality of classification precipitation cylinders, so that the impurities with different properties and different particle sizes in the wastewater can be isolated and precipitated, the precipitation effect can be improved, the influence of impurity mixing on subsequent treatment is avoided, the precipitation process is ensured to be more thorough, and the burden of subsequent treatment is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of oil-water separation, and in particular to an oil-water separator for a heat treatment production line. Background Art

[0002] Quenching is a heat treatment process in which a metal is heated to a certain temperature above the critical temperature, kept at this temperature for a certain period of time, so that it is completely or partially austenitized, and then rapidly cooled to below Ms at a cooling rate greater than the critical cooling rate for martensitic transformation. Cooling requires a certain cooling medium, commonly used are mineral oil, water or oil-water mixtures. When a metal workpiece is quenched with oil or an oil-water mixture, its surface needs to be cleaned before the next process, and the surface of the metal workpiece also needs to be cleaned before heat treatment. Initially, manual cleaning was used, and later a cleaning machine was invented, which can be used for automatic cleaning. After cleaning, the oil on the surface of the parts will inevitably remain in the cleaning tank. After accumulating to a certain extent, it will affect the cleaning effect. If the water containing oil is directly discharged, it will cause a waste of water resources. Therefore, an oil-water separation device is needed to separate the oil and water for secondary use. A Chinese patent discloses an oil-water separator for a heat treatment production line (authorization announcement number CN103894002A). The patent technology discloses an oil-water separator for a heat treatment production line; the oil-water separator includes a vertically arranged cylinder and an oil suction device connected to the cylinder through a pipeline. The oil suction device is located in the oil-water tank next to the cylinder, and a float-type liquid level tracking device is also provided at the end of the oil suction device; it also includes an oil discharge device and a water discharge device, which are connected to the cylinder through a pipeline; a spiral wing damping tube is installed in the cylinder, and an oil suction start device is provided outside the cylinder. The invention adds a float-type liquid level tracking device, and the oil suction sleeve is slidably connected to the oil suction pipe, so the oil suction sleeve can move up and down with the float, and can automatically track the oil-water interface more accurately, ensuring that the horizontal height of the oil-water inlet is consistent with the oil-water interface, and the oil entering the pipeline is basically oil, containing only a small amount of water, and secondary separation can be performed in the cylinder, completely realizing the separation of oil and water. The patent technology solves the problem that the oil-water separator uses the gravity sedimentation principle to remove oil from water based on the different specific gravity of oil and water and the incompatibility of oil and water. The existing oil-water separator inserts a straw into the oil-water mixture and sucks the oil (including water) into the container through the action of a pump. Since it is difficult to control the insertion depth of the straw, if it is too shallow, empty suction will occur, and if it is too deep, water will be sucked into the container, so the oil separated by this type of oil-water separator often contains a certain amount of water. The oil-water mixture sucked into the container is adsorbed on its surface by the oil absorption plate, and the remaining oil-water mixture containing a certain amount of oil is discharged. Since the oil absorption efficiency of the oil absorption plate is limited, the oil-water separation effect is not good, and the oil absorption plate will reach saturation after working for a long time. If it is not cleaned in time, it will lose its function. This type of oil-water separator is large in size and has low oil-water separation efficiency. It needs to be cleaned frequently, and the separated water contains a certain amount of oil. When using water containing oil to clean the workpiece, it will not be cleaned cleanly. The workpiece will be subjected to the next tempering process with oil on it, which will produce a lot of oil smoke, which will not only affect the appearance of the workpiece, but also pollute the tempering furnace and affect the tempering quality.When the separated oil is used for secondary use, if the oil contains excessive water, it will affect the heat treatment effect, causing soft spots, quenching cracks or deformation of parts, or oil splashing, resulting in safety accidents.

[0003] However, the wastewater from thermal treatment in the prior art contains a large amount of metal impurities, which can easily cause sludge sedimentation and blockage during oil-water separation. It is necessary to solve the problem of pre-treating the wastewater from thermal treatment when separating oil and water in the prior art to reduce the occurrence of blockage caused by waste slag metal.

[0004] Therefore, those skilled in the art provide an oil-water separator for a heat treatment production line to solve the problems raised in the above background technology. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides: An oil-water separator for a heat treatment production line comprises: a separation frame; The separation frame is equipped with a pretreatment structure for pretreatment and filtration of oily wastewater from the heat treatment production line; The pre-treatment structure is connected to a centrifugal separation structure arranged on a separation frame; The centrifugal separation structure includes a centrifugal outer box, and a centrifugal inner box is rotatably mounted inside the centrifugal outer box, and a transmission hole rod is integrally fixed in the middle of the centrifugal inner box and is rotatably arranged inside the centrifugal outer box; The interior of the centrifugal inner box is provided with a plurality of centrifugal filter holes for centrifugal discharge of water along the outer side, and an oblique cone groove with an angle of 45° is provided along the outer edge of the centrifugal inner box along the centrifugal filter holes; The oblique angle conical groove faces one side of the centrifugal outer box, which is conducive to guiding the water discharged by centrifugation to the bottom of the centrifugal outer box; An oil cleaning structure is arranged between the centrifugal separation structure and the pretreatment structure.

[0006] Preferably: the top end of the transmission hole rod is located outside the centrifugal outer box and is connected to servo motor 2; the transmission hole rod is located at the bottom end of the bottom of the centrifugal inner box and is integrally fixedly provided with an oil discharge inner tube; and the bottom end of the oil discharge inner tube is sealed and rotatably equipped with an oil discharge shaft tube for discharging oil for centrifugal filtration.

[0007] Preferably: a plurality of liquid inlet holes are opened through the inner wall of the top of the transmission hole rod toward the outside, and the transmission hole rod is located outside the liquid inlet hole and is provided with a supply pipe in a sealed and rotatable sleeve; The end of the supply pipe away from the transmission hole rod is connected to an extraction pump, and the extraction end of the extraction pump is connected to an extraction outer tube, the inner side of the extraction outer tube is sealed and slidably provided with an extraction inner tube, and the bottom end of the extraction inner tube is connected to a float tube.

[0008] Preferably: a water discharge pipe is connected through the bottom end of the centrifugal outer box, and a flange member which is sealed and assembled with the external pipe body is integrally fixed to the bottom end of the water discharge pipe.

[0009] Preferably: the pretreatment structure includes a sedimentation box, and an arc-shaped sedimentation bottom box is integrally fixed to the bottom of the sedimentation box, and the inner side of the arc-shaped sedimentation bottom box is in an arc shape; The arc-shaped sedimentation bottom box has a plurality of classification sedimentation cylinders 1 fixed in a circular shape at equal distances inside, and a transmission connection cylinder 1 is rotatably mounted on the bottom end of the classification sedimentation cylinder 1, and an inner spiral 1 which is closely attached to the inner side of the classification sedimentation cylinder 1 is fixedly mounted on the inner wall of the transmission connection cylinder 1; An inner spur gear ring is integrally fixed to the outer wall of the transmission connection cylinder 1, and an outer side of the inner spur gear ring is meshed with an outer spur gear ring rotatably arranged on the inner side wall of the arc-shaped sedimentation bottom box.

[0010] Preferably: a second classification sedimentation cylinder is fixedly mounted at the center of the arc-shaped sedimentation bottom box, and a second transmission connection cylinder is rotatably mounted at the bottom of the second classification sedimentation cylinder, and an inner spiral second is fixedly mounted on the inner side wall of the second classification sedimentation cylinder; The outer wall of the second transmission connecting cylinder is fixedly equipped with an active spur gear ring; The arc-shaped sedimentation bottom box is circularly and equidistantly fixedly equipped with five classification sedimentation cylinders three along the outside of the classification sedimentation cylinder two, and the bottoms of the five classification sedimentation cylinders three are rotatably equipped with transmission connection cylinders three, and the outer walls of the five transmission connection cylinders three are fixedly equipped with driven spur gear rings meshing with the active spur gear ring.

[0011] Preferably: the outer wall of the bottom end of the second transmission connection cylinder is fixedly equipped with a worm gear 2, and the outer wall of the bottom end of the first transmission connection cylinder is fixedly equipped with a worm gear 1; The worm wheel 2 is meshed with the worm gear 1, and the worm wheel 1 is meshed with the worm gear 2; The worm gear one and the worm gear two are integrally fixed with an active rod, one end of the active rod is sealed and rotatably penetrates the outside of the arc-shaped sedimentation bottom box, and is connected with a servo motor one.

[0012] Preferably: the oil cleaning structure comprises a transmission rod connected to the output shaft of the servo motor 1, and a bevel gear 1 is fixedly provided at one end of the transmission rod away from the servo motor 1, and the bevel gear 1 is meshed with a bevel gear 2; A vertical shaft is fixedly arranged at the second center of the helical gear, and a worm body is fixedly installed on the outer wall of the vertical shaft.

[0013] Preferably: the worm body is meshed with a worm wheel body, a driving rod is fixedly arranged at the center of the worm wheel body, and a transmission bearing is rotatably mounted on the outside of the driving rod; A driving disc is fixedly arranged on the outer wall of one end of the driving rod, and a round shaft rod is rotatably mounted on the inner wall of the driving disc.

[0014] Preferably: an angled rod is rotatably mounted on one end of the round shaft rod away from the driving disk, and a reset plate is rotatably mounted on one end of the angled rod away from the round shaft rod, and a reset frame is arranged on the outer side of the reset plate; The reset plate is movably located inside the reset frame; A reset spring is installed between the reset plate and the reset frame; One end of the reset plate away from the reset spring is equipped with a dredging rod corresponding to the centrifugal filter hole.

[0015] Technical effects and advantages of the present invention: The present invention realizes the synchronous rotation of the transmission connection cylinder two and the transmission connection cylinder three through the coordinated operation of transmission parts such as the worm wheel, the worm and the spur gear ring, and the inner spiral inside also rotates synchronously, which can automatically scrape off impurities stuck on the inside of the transmission connection cylinder two and the transmission connection cylinder three, without the need for manual disassembly and cleaning, thus saving labor costs, improving cleaning efficiency, and preventing the accumulation of impurities from affecting the normal operation of the equipment.

[0016] In the present invention, the worm gear 2 drives the worm wheel 1 to rotate, so that the transmission connection cylinder 1 rotates, and then the inner spiral 1 rotates on the inner wall of the classification sedimentation cylinder 1 to clean up impurities, which can effectively prevent impurities from adhering to the inner wall of the classification sedimentation cylinder 1, ensure the sedimentation effect of the classification sedimentation cylinder 1, maintain the equipment in a good working state, ensure the normal operation of the equipment, and extend the service life of the equipment.

[0017] The present invention utilizes an arc-shaped sedimentation bottom box to guide the impurities after the heat treatment wastewater is precipitated into a plurality of classification sedimentation cylinders, which can isolate and precipitate impurities of different properties and different particle sizes in the wastewater, thereby helping to improve the sedimentation effect, avoiding the influence of impurity mixing on subsequent treatment, ensuring a more thorough sedimentation process, and reducing the burden on subsequent treatment.

[0018] The present invention, with the help of the buoyancy of the float tube in the wastewater, the inner extraction tube can automatically adjust the height in the outer extraction tube, accurately extract the heat-treated wastewater at the top of the sedimentation tank, avoid extracting the wastewater containing more impurities at the bottom, ensure the quality of the wastewater entering the subsequent treatment link, improve the treatment effect, and reduce the blockage and wear of the subsequent treatment equipment.

[0019] The present invention starts a servo motor to drive the centrifugal inner box to rotate, and based on the density difference of different components, realizes efficient separation of oil, water and solid impurities under the action of centrifugal force. The water and solid impurities with high density are thrown to the outer edge and discharged through the water discharge pipe, and the oil with low density flows toward the center and flows out through the oil discharge shaft pipe. This separation method can effectively recover oil resources, and at the same time make the treated water meet higher emission standards, thereby reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an oil-water separator for a heat treatment production line provided by the present application; Figure 2 This is a schematic diagram of the front structure of an oil-water separator for a heat treatment production line provided by the present application; Figure 3 This is a schematic diagram of the structure of a sedimentation box in an oil-water separator for a heat treatment production line provided by the present application; Figure 4 This application provides an oil-water separator for a heat treatment production line. Figure 3 The structural diagram at A in the middle; Figure 5 It is a structural schematic diagram of a cross section of a centrifugal outer box in an oil-water separator for a heat treatment production line provided by the present application; Figure 6 This application provides an oil-water separator for a heat treatment production line. Figure 5 Schematic diagram of the structure of B; Figure 7 It is a structural schematic diagram of a centrifugal inner box in an oil-water separator for a heat treatment production line provided by the present application; Figure 8 This is a schematic diagram of the structure of a dredging rod in an oil-water separator for a heat treatment production line provided by the present application; Fig. 9 This application provides an oil-water separator for a heat treatment production line. Figure 8 Schematic diagram of the structure at C in the middle.

[0021] In the figure: 1. Separate the rack; 2. Pretreatment structure; 201. Sedimentation box; 202. Arc-shaped sedimentation bottom box; 203. Heat treatment water inlet pipe; 204. Classification sedimentation cylinder 1; 205. Transmission connection cylinder 1; 206. Inner spur gear ring; 207. Outer spur gear ring; 208. Inner spiral 1; 209. Worm gear 1; 210. Classification sedimentation cylinder 2; 211. Transmission connection cylinder 2; 212. Inner spiral 2; 213. Worm gear 2; 214. Worm 1; 215. Active spur gear ring; 216. Classification sedimentation cylinder 3; 217. Transmission connection cylinder 3; 218. Driven spur gear ring; 219. Worm 2; 220. Active rod; 221. Servo motor 1; 222. Sludge bucket; 223. Sludge box; 224. Sewage pipe; 3. Load-bearing vertical frame; 4. Centrifugal separation structure; 401. Centrifugal outer box; 402. Centrifugal inner box; 403. Centrifugal filter hole; 404. Bevel cone groove; 405. Transmission hole rod; 406. Servo motor 2; 407. Supply pipe; 408. Extraction pump; 409. Extraction outer pipe; 410. Extraction inner pipe; 411. Float tube; 412. Oil discharge inner pipe; 413. Oil discharge shaft pipe; 414. Water discharge pipe; 5. Support side frame; 6. Controller; 7. Oil cleaning structure; 701. Transmission rod; 702. Bevel gear one; 703. Bevel gear two; 704. Vertical shaft; 705. Worm body; 706. Drive rod; 707. Worm wheel body; 708. Transmission bearing; 709. Drive plate; 710. Round shaft; 711. Bevel rod; 712. Reset plate; 713. Clearing rod; 714. Reset spring; 715. Reset frame. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

[0023] For example, see Figure 1-2 In this embodiment, an oil-water separator for a heat treatment production line is provided, comprising: a separation frame 1; a pretreatment structure 2 for pretreatment and filtration of oily wastewater from the heat treatment production line is installed on the separation frame 1; The pretreatment structure 2 is used to filter the iron slag and impurity precipitation in the oily wastewater of the heat treatment production line, and reduce the blockage when the oily wastewater in the heat treatment production line is separated into oil and water. The pretreatment structure 2 is connected to a centrifugal separation structure 4 arranged on the separation frame 1, and the centrifugal separation structure 4 is used to centrifugally separate the heat treatment wastewater from oil and water after precipitation; An oil cleaning structure 7 is installed between the centrifugal separation structure 4 and the pretreatment structure 2. The oil cleaning structure 7 is used to cooperate with the pretreatment structure 2 in the cleaning mode to prevent and clear the debris and solidified oil in the centrifugal separation structure 4.

[0024] For example 2, please refer to Figure 3-4 In this embodiment, a pretreatment structure 2 in an oil-water separator for a heat treatment production line is provided; The pretreatment structure 2 includes a sedimentation box 201, and an arc-shaped sedimentation bottom box 202 is fixed to the bottom of the sedimentation box 201 as a whole, and the inner side of the arc-shaped sedimentation bottom box 202 is in an arc shape, and the arc-shaped arc-shaped sedimentation bottom box 202 is conducive to the solid sliding and sedimentation of sludge, metal impurities and the like in the heat treatment wastewater, and the inner side of the arc-shaped sedimentation bottom box 202 is in a circular shape and fixed with a plurality of classification sedimentation cylinders 204 at equal distances, and the bottom end of the classification sedimentation cylinder 204 is rotatably equipped with a transmission connection cylinder 205, and the inner wall of the transmission connection cylinder 205 is fixedly installed with an inner spiral 208 that is tightly attached to the inner side of the classification sedimentation cylinder 204, and the inner spiral 208 can scrape and clean the sticky impurities inside the classification sedimentation cylinder 204 as the transmission connection cylinder 205 rotates; An inner spur gear ring 206 is integrally fixed to the outer wall of the transmission connection cylinder 205, and the outer side of the inner spur gear ring 206 is meshed with an outer spur gear ring 207 rotatably arranged on the inner wall of the arc-shaped sedimentation bottom box 202. Several inner spur gear rings 206 of the transmission connection cylinder 205 are meshed with the outer spur gear ring 207.

[0025] The center position of the arc-shaped sedimentation bottom box 202 is fixedly equipped with a classification sedimentation cylinder 210, and the bottom of the classification sedimentation cylinder 210 is rotatably installed with a transmission connection cylinder 211, and the inner side of the transmission connection cylinder 211 is fixedly provided with an inner spiral 212 tightly arranged on the inner side wall of the classification sedimentation cylinder 210. When the inner spiral 212 rotates with the transmission connection cylinder 211, the impurities stuck to the inner wall of the classification sedimentation cylinder 210 can be scraped off. The number of the classification sedimentation cylinder 210 is single, and the outer wall of the transmission connection cylinder 211 located at the center position of the arc-shaped sedimentation bottom box 202 is fixedly equipped with an active straight tooth ring 215; The arc-shaped sedimentation bottom box 202 is fixedly equipped with five classification sedimentation cylinders 3 216 in a circular shape and at equal distances along the outer side of the classification sedimentation cylinder 210, and the bottoms of the five classification sedimentation cylinders 3 216 are all rotatably equipped with a transmission connection cylinder 3 217, and the outer walls of the five transmission connection cylinders 3 217 are all fixedly equipped with a driven spur gear ring 218 meshing with the active spur gear ring 215. When the transmission connection cylinder 211 rotates, the active spur gear ring 215 meshes and transmits the driven spur gear rings 218 of the five transmission connection cylinders 3 217, and the inner sides of the five transmission connection cylinders 3 217 are all fixedly provided with an inner spiral 3 that is tightly attached to the inner wall of the classification sedimentation cylinder 3 216; The outer wall of the bottom end of the second transmission connection cylinder 211 is fixedly equipped with a worm gear 213, and the outer wall of the bottom end of the first transmission connection cylinder 205 is fixedly equipped with a worm gear 1 209, the second worm gear 213 is meshed with a worm 1 214, and the first worm gear 209 is meshed with a worm 219; The worm gear 1 214 and the worm gear 219 are integrally fixed with an active rod 220, one end of the active rod 220 is sealed and rotated through the outside of the arc-shaped sedimentation bottom box 202, and is connected to a servo motor 1 221, the servo motor 1 221 is fixedly installed on the outer wall of the arc-shaped sedimentation bottom box 202, and is used to actively drive the active rod 220 to rotate, the top of the sedimentation box 201 is connected through a heat treatment water inlet pipe 203, and the end of the heat treatment water inlet pipe 203 away from the sedimentation box 201 is integrally fixed with a flange member that is sealed and docked with an external pipe body; A sludge hopper 222 is sealed and fixed at the bottom end of the arc-shaped sedimentation bottom box 202, and a sludge box 223 is connected to the bottom end of the sludge hopper 222. A sewage pipe 224 is connected to the side of the sludge box 223, and the end of the sewage pipe 224 away from the sludge box 223 is equipped with a flange that can be detachably mounted on an external pipe body. A supporting side frame 5 is fixed to the outer wall of the sedimentation box 201 as a whole, and the sedimentation box 201 is fixedly installed on the separation frame 1 through the supporting side frame 5, and a controller 6 is installed on the outer wall of the supporting side frame 5.

[0026] For example 3, please refer to Figure 5 to Figure 7 In this embodiment, a centrifugal separation structure 4 in an oil-water separator for a heat treatment production line is provided; The centrifugal separation structure 4 includes a centrifugal outer box 401, and a centrifugal inner box 402 is rotatably mounted inside the centrifugal outer box 401. A transmission hole rod 405 is integrally fixed to the middle of the centrifugal inner box 402 and is sealed and rotatably arranged inside the centrifugal outer box 401. The transmission hole rod 405 is located in the centrifugal inner box 402 and is provided with a plurality of slots for discharging heat-treated liquid. The interior of the centrifugal inner box 402 is provided with a plurality of centrifugal filter holes 403 for centrifugal discharge of water along the outer side, and an oblique cone groove 404 with an angle of 45° is provided along the centrifugal filter holes 403 on the outer edge of the centrifugal inner box 402, and the oblique cone groove 404 faces the side of the centrifugal outer box 401, which is conducive to guiding the centrifugally discharged water to the bottom of the centrifugal outer box 401, and the upper and lower ends of the centrifugal outer box 401 and the centrifugal inner box 402 are both conical arc shapes, and the conical arc shapes of the centrifugal outer box 401 and the centrifugal inner box 402 are conducive to the discharge of oil and the outflow of water; The top of the transmission hole rod 405 is located outside the centrifugal outer box 401 and is connected to a servo motor 406. The transmission hole rod 405 is located at the bottom end of the bottom of the centrifugal inner box 402 and is integrally fixedly provided with an oil discharge inner tube 412. The bottom end of the oil discharge inner tube 412 is sealed and rotatably assembled with an oil discharge shaft tube 413 for discharging oil for centrifugal filtration. The oil discharge shaft tube 413 and the oil discharge inner tube 412 are sealed and rotatably assembled through a sealing shaft body up and down, and the bottom end of the oil discharge shaft tube 413 is exposed outside the centrifugal outer box 401, and is integrally fixed with a flange that is sealed and docked with the external tube body.

[0027] The inner wall of the top of the transmission hole rod 405 is penetrated outward to open a plurality of liquid inlet holes, and the transmission hole rod 405 is located outside the liquid inlet hole and is equipped with a supply pipe 407 in a sealed rotating sleeve. The supply pipe 407 and the transmission hole rod 405 are sealed and rotated, and the supply pipe 407 is set at a fixed angle. When the transmission hole rod 405 rotates at a high speed, the angle of the supply pipe 407 will not change; The end of the supply pipe 407 away from the transmission hole rod 405 is connected to an extraction pump 408, and the extraction end of the extraction pump 408 is connected to an extraction outer tube 409, and the inner side of the extraction outer tube 409 is sealed and slidably provided with an extraction inner tube 410, and the bottom end of the extraction inner tube 410 is connected to a float tube 411; the bottom of the float tube 411 is provided with a plurality of holes for extracting the heat treatment liquid, and the float tube 411 can float on the water surface due to the buoyancy of the heat treatment liquid, and only the hole of the float tube 411 is located below the water surface of the heat treatment liquid; The bottom end of the centrifugal outer box 401 is connected with a water discharge pipe 414, and the bottom end of the water discharge pipe 414 is integrally fixed with a flange member that is sealed and assembled with the external tube body. The water discharge pipe 414 is used to discharge the water that has been centrifugally filtered inside the centrifugal outer box 401; the outer wall of the centrifugal outer box 401 is integrally fixed with a load-bearing vertical frame 3, and the centrifugal outer box 401 is fixedly installed on the separation frame 1 through the load-bearing vertical frame 3.

[0028] Example 4, please refer to Figure 8-Figure 9 In this embodiment, an oil cleaning structure 7 in an oil-water separator for a heat treatment production line is provided; The oil cleaning structure 7 includes a transmission rod 701 connected to the output shaft of the servo motor 1 221, and a bevel gear 1 702 is fixedly provided at one end of the transmission rod 701 away from the servo motor 1 221, and the bevel gear 1 702 is meshed with a bevel gear 2 703, the transmission rod 701 is driven to rotate by the servo motor 1 221, and the bevel gear 2 703 rotates synchronously through the meshing transmission of the bevel gear 1 702; A vertical shaft 704 is fixedly provided at the center of the second bevel gear 703 , and a worm body 705 is fixedly installed on the outer wall of the vertical shaft 704 . A limiting shaft frame is provided on the outer side of the worm body 705 , and the limiting shaft frame fixes the sedimentation box 201 and the centrifugal outer box 401 .

[0029] The worm body 705 is meshed with a worm wheel body 707, a driving rod 706 is fixedly arranged at the center of the worm wheel body 707, and a transmission bearing 708 is rotatably installed on the outside of the driving rod 706, and the driving rod 706 is rotatably arranged on the inner side of the limiting shaft frame through the transmission bearing 708; A driving disk 709 is fixedly provided on the outer wall of one end of the driving rod 706, and a round shaft rod 710 is rotatably mounted on the inner wall of the driving disk 709. An angled rod 711 is rotatably mounted on the end of the round shaft rod 710 away from the driving disk 709, and a reset plate 712 is rotatably mounted on the end of the angled rod 711 away from the round shaft rod 710, and a reset frame 715 is arranged on the outer side of the reset plate 712. When the driving disk 709 rotates, the angled rod 711 on the round shaft rod 710 can be reciprocated, and the reset plate 712 can be reciprocated. The reset plate 712 is movably located on the inner side of the reset frame 715. A reset spring 714 is installed between the reset plate 712 and the reset frame 715. The reset spring 714 is used to elastically limit the reset of the reset plate 712. The end of the reset plate 712 away from the reset spring 714 is equipped with a clearing rod 713 corresponding to the centrifugal filter hole 403. The clearing rod 713 is sealingly and movably located on the inner wall of the centrifugal outer box 401.

[0030] According to the above embodiments, the working principle of the present invention is: The wastewater from the heat treatment is subjected to sedimentation treatment in the pretreatment structure 2; The wastewater after heat treatment is introduced into the sedimentation tank 201 through the heat treatment water inlet pipe 203, and the impurities after the heat treatment wastewater is precipitated are introduced into the classification sedimentation cylinder 1 204, the classification sedimentation cylinder 210 and the classification sedimentation cylinder 3 216 through the arc-shaped sedimentation bottom box 202, and the impurities in the heat treatment wastewater are isolated and precipitated through the classification sedimentation cylinder 1 204, the classification sedimentation cylinder 210 and the classification sedimentation cylinder 3 216; The heat-treated wastewater after precipitation is pumped out by starting the extraction pump 408. The extraction pump 408 is started to extract the heat-treated wastewater precipitated on the top of the sedimentation tank 201 through the float tube 411 connected to the extraction inner tube 410 inside the extraction outer tube 409, so that the heat-treated wastewater is introduced into the inner side of the transmission hole rod 405 through the supply pipe 407, and the heat-treated wastewater is discharged into the centrifugal inner box 402; When the float tube 411 is used to extract the heat-treated wastewater, since the float tube 411 has a buoyancy on the heat-treated wastewater, the float tube 411 can automatically adjust the height inside the extraction outer tube 409 according to the buoyancy of the extraction inner tube 410, so that the float tube 411 extracts the heat-treated wastewater at the top of the sedimentation tank 201. When the centrifugal separation structure 4 is used to separate and collect the oil and water from the heat-treated wastewater, the servo motor 406 is started, and the start of the servo motor 406 drives the transmission hole rod 405 and the centrifugal inner box 402 fixed thereto to rotate. The rotation of the centrifugal inner box 402 pushes the oil, water and solid impurities in the heat-treated wastewater in the direction of the centrifugal force, i.e., away from the rotation center, while the oil with a smaller density is gathered in the area of ​​the centrifugal inner box 402 close to the rotation center; in this way, different components in the oil of the heat-treated wastewater move along different paths in the centrifuge, thereby achieving separation; The heat treatment wastewater enters from the center of the centrifugal inner box 402 and flows in the high-speed rotating centrifugal inner box 402. The water and solid impurities with higher density will be thrown to the centrifugal filter hole 403 at the outer edge of the centrifugal inner box 402, and then discharged through the water discharge pipe 414 connected to the centrifugal outer box 401; while the oil with lower density will flow toward the center and flow out from the oil discharge shaft pipe 413 at the bottom end of the oil discharge inner pipe 412, thereby achieving the purpose of oil separation; In the cleaning mode, by starting the servo motor 1 221 and the servo motor 2 406 to rotate at a specific angle; The started servo motor 1 221 will drive the transmission rod 701 and its active rod 220 to rotate at the same time; When the active rod 220 rotates, the worm 1 214 and the worm 2 219 rotate synchronously, so that the worm 1 214 meshes and drives the worm wheel 2 213, and the worm wheel 2 219 meshes and drives the worm wheel 1 209; The transmission connection cylinder 211 is made to rotate synchronously through the worm gear 213 and the transmission connection cylinder 1 205 is made to rotate synchronously through the worm gear 1 209. The rotating transmission connection cylinder 211 drives the active spur gear ring 215 thereon to rotate, and the active spur gear ring 215 rotates to engage with a plurality of driven spur gear rings 218 to rotate, and then drives the transmission connection cylinder 3 217 to rotate through the driven spur gear ring 218, so that the transmission connection cylinder 3 217 and the inner spiral 212 and the inner spiral 3 inside the transmission connection cylinder 2 211 rotate synchronously, which is beneficial to scrape off the impurities stuck inside the transmission connection cylinder 3 217 and the transmission connection cylinder 2 211, so as to clean the inside of the transmission connection cylinder 3 217 and the transmission connection cylinder 2 211; The worm wheel 1 209 meshed and rotated by the worm 219 will drive the transmission connection cylinder 1 205 to rotate, so that the transmission connection cylinder 1 205 drives the inner spiral 1 208 therein to rotate on the inner wall of the classification sedimentation cylinder 1 204, so as to clean the impurities stuck on the inner wall of the classification sedimentation cylinder 1 204; The rotation of the transmission rod 701 drives the bevel gear 1 702 to rotate, and the bevel gear 1 702 rotates to engage the bevel gear 2 703 to rotate. The rotating bevel gear 2 703 drives the vertical shaft rod 704 to rotate, so that the worm body 705 engages the worm wheel body 707 to rotate, so that the worm wheel body 707 drives the driving rod 706 to rotate, and the driving disk 709 rotates along with the driving rod 706. The rotating driving disk 709 drives the bevel rod 711 through the restriction of the round shaft rod 710 to drive the reset plate 712 to reciprocate inside the reset frame 715, and the extended reset plate 712 can move the dredging rod 713 to the inside of the centrifugal filter hole 403 of the centrifugal inner box 402, so as to dredge and clean the solid oil and impurities blocked in the centrifugal filter hole 403, and the coordinated rotation of the servo motor 2 406 can dredge the centrifugal filter holes 403 in turn.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An oil-water separator for a heat treatment production line, characterized in that: include: Separate the rack; The separation frame is equipped with a pretreatment structure for pretreatment and filtration of oily wastewater from the heat treatment production line; The pre-treatment structure is connected to a centrifugal separation structure arranged on a separation frame; The centrifugal separation structure includes a centrifugal outer box, and a centrifugal inner box is rotatably mounted inside the centrifugal outer box, and a transmission hole rod is integrally fixed in the middle of the centrifugal inner box and is rotatably arranged inside the centrifugal outer box; The interior of the centrifugal inner box is provided with a plurality of centrifugal filter holes for centrifugal discharge of water along the outer side, and an oblique cone groove with an angle of 45° is provided along the outer edge of the centrifugal inner box along the centrifugal filter holes; The oblique angle conical groove faces one side of the centrifugal outer box, which is conducive to guiding the water discharged by centrifugation to the bottom of the centrifugal outer box; An oil cleaning structure is arranged between the centrifugal separation structure and the pretreatment structure.

2. The oil-water separator for a heat treatment production line according to claim 1, characterized in that: The top end of the transmission hole rod is located outside the centrifugal outer box and is connected to a servo motor 2. The transmission hole rod is located at the bottom end of the bottom of the centrifugal inner box and is fixedly provided with an oil discharge inner tube as a whole. The bottom end of the oil discharge inner tube is sealed and rotatably equipped with an oil discharge shaft tube for discharging oil for centrifugal filtration.

3. The oil-water separator for a heat treatment production line according to claim 2, characterized in that: The inner wall of the top of the transmission hole rod is provided with a plurality of liquid inlet holes extending outward, and the transmission hole rod is located outside the liquid inlet holes and is provided with a supply pipe in a sealed rotating sleeve; The end of the supply pipe away from the transmission hole rod is connected to an extraction pump, and the extraction end of the extraction pump is connected to an extraction outer tube, the inner side of the extraction outer tube is sealed and slidably provided with an extraction inner tube, and the bottom end of the extraction inner tube is connected to a float tube.

4. The oil-water separator for a heat treatment production line according to claim 1, characterized in that: The bottom end of the centrifugal outer box is connected with a water discharge pipe, and the bottom end of the water discharge pipe is integrally fixed with a flange member which is sealed and assembled with the external pipe body.

5. The oil-water separator for a heat treatment production line according to claim 1, characterized in that: The pretreatment structure includes a sedimentation box, and an arc-shaped sedimentation bottom box is fixed to the bottom of the sedimentation box as a whole, and the inner side of the arc-shaped sedimentation bottom box is in an arc shape; The arc-shaped sedimentation bottom box has a plurality of classification sedimentation cylinders 1 fixed in a circular shape at equal distances inside, and a transmission connection cylinder 1 is rotatably mounted on the bottom end of the classification sedimentation cylinder 1, and an inner spiral 1 which is closely attached to the inner side of the classification sedimentation cylinder 1 is fixedly mounted on the inner wall of the transmission connection cylinder 1; An inner spur gear ring is integrally fixed to the outer wall of the transmission connection cylinder 1, and an outer side of the inner spur gear ring is meshed with an outer spur gear ring rotatably arranged on the inner side wall of the arc-shaped sedimentation bottom box.

6. The oil-water separator for a heat treatment production line according to claim 5, characterized in that: The center of the arc-shaped sedimentation bottom box is fixedly equipped with a second classification sedimentation cylinder, and the bottom of the second classification sedimentation cylinder is rotatably equipped with a second transmission connection cylinder, and the inner side of the second transmission connection cylinder is fixedly provided with an inner spiral second tightly arranged on the inner side wall of the second classification sedimentation cylinder; The outer wall of the second transmission connecting cylinder is fixedly equipped with an active spur gear ring; The arc-shaped sedimentation bottom box is circularly and equidistantly fixedly equipped with five classification sedimentation cylinders three along the outside of the classification sedimentation cylinder two, and the bottoms of the five classification sedimentation cylinders three are rotatably equipped with transmission connection cylinders three, and the outer walls of the five transmission connection cylinders three are fixedly equipped with driven spur gear rings meshing with the active spur gear ring.

7. The oil-water separator for a heat treatment production line according to claim 6, characterized in that: The outer wall of the bottom end of the second transmission connecting cylinder is fixedly equipped with a worm gear 2, and the outer wall of the bottom end of the first transmission connecting cylinder is fixedly equipped with a worm gear 1; The worm wheel 2 is meshed with the worm gear 1, and the worm wheel 1 is meshed with the worm gear 2; The worm gear one and the worm gear two are integrally fixed with an active rod, one end of the active rod is sealed and rotatably penetrates the outside of the arc-shaped sedimentation bottom box, and is connected with a servo motor one.

8. The oil-water separator for a heat treatment production line according to claim 7, characterized in that: The oil cleaning structure includes a transmission rod connected to the output shaft of the servo motor 1, and a helical gear 1 is fixedly arranged at one end of the transmission rod away from the servo motor 1, and the helical gear 1 is meshed with a helical gear 2; A vertical shaft is fixedly arranged at the second center of the helical gear, and a worm body is fixedly installed on the outer wall of the vertical shaft.

9. The oil-water separator for a heat treatment production line according to claim 8, characterized in that: The worm body is meshed with a worm wheel body, a driving rod is fixedly arranged at the center of the worm wheel body, and a transmission bearing is rotatably mounted on the outside of the driving rod; A driving disc is fixedly arranged on the outer wall of one end of the driving rod, and a round shaft rod is rotatably mounted on the inner wall of the driving disc.

10. The oil-water separator for a heat treatment production line according to claim 9, characterized in that: An angled rod is rotatably mounted on one end of the round shaft rod away from the driving disk, and a reset plate is rotatably mounted on one end of the angled rod away from the round shaft rod, and a reset frame is arranged on the outer side of the reset plate; The reset plate is movably located inside the reset frame; A reset spring is installed between the reset plate and the reset frame; One end of the reset plate away from the reset spring is equipped with a dredging rod corresponding to the centrifugal filter hole.

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