A quenching oil filtering structure and filtering method of a heat treatment device

Abstract

The present invention relates to a quenching oil filtering structure of a heat treatment device and a filtering method thereof, and belongs to the technical field of quenching oil filtering equipment. By directly arranging a filter screen in a quenching shell, when a quenching cover releases its matching relationship with the quenching shell and moves toward one end away from the quenching shell, due to the existence of a steel rope, the filter screen located in the quenching shell will move toward the top of the quenching shell. In the process of the filter screen rising, the filter screen will filter the carbon black and oxide scale located in the quenching shell out of the quenching oil. When the filter screen moves to the outside of the quenching oil, the carbon black and oxide scale located on the filter screen are cleared, so that the carbon black and oxide scale in the quenching shell can be cleared, and there is no need to transfer the quenching oil in the quenching shell to a filtering device and then clear the carbon black and oxide scale in the quenching oil.

Description

Technical Field

[0001] The invention belongs to the technical field of quenching oil filtering equipment, and in particular relates to a quenching oil filtering structure of a heat treatment device and a filtering method thereof. Background Art

[0002] Quenching oil is a commonly used process oil in heat treatment, used as a quenching medium. Heat treatment refers to a metal hot processing process in which the material is heated, kept warm and cooled in a solid state to obtain the expected structure and performance. Quenching oil is used for quenching alloy steel and small-section carbon steel during heat treatment, which can not only obtain satisfactory hardenability and hardenability, but also prevent cracking and reduce deformation. However, the carbon black and oxide scale produced by long-term use are adsorbents, which absorb the additives in the quenching oil and accelerate the deterioration of the quenching oil performance. Therefore, it is very important to regularly remove carbon black and oxide scale for the maintenance of quenching oil.

[0003] For example, the utility model patent with patent authorization announcement number: CN208771214 U discloses a quenching oil filtration device for a heat treatment furnace, including a tank body, a sealing cover, and an inner bin. The inner bin is arranged inside the tank body, a sealing cover is arranged on the top of the tank body, a centrifugal seat is arranged at the bottom of the tank body, a circular connecting structure is arranged at the bottom of the inner bin, a bag-shaped microfiltration membrane is arranged on the inner wall of the inner bin, the connecting structure includes a stabilizing seat and a movable shaft, a high-speed rotating shaft is arranged in the middle of the centrifugal seat, and a movable protrusion matching the high-speed rotating shaft is arranged at the bottom of the tank body, and the movable protrusion matches the movable shaft.

[0004] Based on the search of patent authorization announcement numbers and the shortcomings found therein: The existing filtering device for quenching oil is designed to be separated from the heat treatment furnace. Therefore, when the quenching oil in the heat treatment furnace needs to filter out the carbon black and scale therein, the quenching oil in the heat treatment furnace needs to be transferred to the filtering device. After being filtered by the filtering device, the filtered quenching oil is transported to the heat treatment furnace. Since the quenching oil needs to be continuously transferred and transported during the filtration period, the overall filtration speed and efficiency of the quenching oil are easily reduced. Summary of the invention

[0005] In order to solve the problem that the existing filtering device for quenching oil and the heat treatment furnace are designed to be separated from each other, therefore, when the quenching oil in the heat treatment furnace needs to filter out the carbon black and oxide scale located therein, the quenching oil in the heat treatment furnace needs to be transferred to the filtering device, and after being filtered by the filtering device, the filtered quenching oil is transported to the heat treatment furnace; since the quenching oil needs to be continuously transferred and transported during the filtration period, the overall filtration speed and efficiency of the quenching oil are easily reduced. The present invention provides a quenching oil filtering structure of a heat treatment device and a filtering method thereof.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A quenching oil filtering structure of a heat treatment device includes a quenching shell with quenching oil inside, a quenching cover, a filter screen and a steel rope. The filter screen can be vertically raised and lowered in the quenching shell, and the four outer walls of the filter screen are respectively arranged to fit each other with the four inner walls of the quenching shell. The quenching cover can be horizontally slidably arranged on the top of the quenching shell, and the quenching cover can lock or release its matching relationship with the quenching shell. The two ends of the steel rope are respectively connected to the quenching cover and the filter screen, and the filter screen can lock or release its matching relationship in the quenching oil.

[0007] As a preferred technical solution of the present invention, it also includes a unloading component, which includes an abutment block, a sealing block and a sealing spring. The side wall of the quenching shell is provided with a unloading slot hole, and the unloading slot hole is located at the top of the liquid surface of the quenching oil. The sealing block can be slidably arranged on the unloading slot hole, and the two ends of the sealing spring are respectively connected to the sealing block and the side wall of the quenching shell, and the sealing block can lock or release its sealing matching relationship with the unloading slot hole; the abutment block is arranged at the top of one end of the filter screen, and the abutment block can lock or release its abutting fitting relationship with the sealing block.

[0008] As a preferred technical solution of the present invention, the filter screen is arranged obliquely, and the abutment block is arranged at the top of one end of the filter screen where the height is lower.

[0009] As a preferred technical solution of the present invention, it also includes a vibration component, which includes a vibration motor and an eccentric block. The vibration motor is arranged outside the side wall of the quenching shell, and the output end of the vibration motor passes through the side wall of the quenching shell to the inside of the quenching shell. The eccentric block is provided with a rotating hole, and the eccentric block is coaxially connected to the output end of the vibration motor through the rotating hole. The central axis of the eccentric block and the central axis of the rotating hole do not overlap each other, and the eccentric block can lock or release its matching relationship with the end of the filter screen set at a higher height.

[0010] As a preferred technical solution of the present invention, the vibration component also includes a pressing block, a pressing spring and a control module. The side wall of the quenching shell is provided with a control slot hole, the control module is arranged in the control slot hole, the control module is communicatively connected with the vibration motor, the pressing block can be slidably arranged in the control slot hole, the pressing spring is arranged in the control slot hole, the two ends of the pressing spring are respectively connected to the pressing block and the quenching shell, the bottom of one end of the pressing block extending out of the control slot hole is inclined, and the vertical length of the end of the pressing block extending out of the control slot hole gradually increases from the direction approaching the control module, and the pressing block can lock or release its pressing fitting relationship with the control module.

[0011] As a preferred technical solution of the present invention, it also includes a filter assembly, the filter assembly includes a plurality of filter units, a plurality of filter slots and a plurality of sealing slots are provided at the bottom of the quenching shell, the plurality of filter units are matched with the plurality of filter slots in a one-to-one correspondence, and any of the filter units is arranged in a corresponding filter slot; the plurality of sealing slots are matched with the plurality of filter slots in a one-to-one correspondence, and any of the sealing slots is connected to the corresponding filter slot; the plurality of filter slots are arranged at equal intervals along the width direction of the quenching shell; The filter unit includes a filter plate and a filter spring. The filter spring is arranged in the sealing groove. The filter plate can be slidably arranged in the sealing groove. The two ends of the filter spring are respectively connected to the filter plate and the quenching shell. The filter plate can lock or release its sealing cooperation relationship with the corresponding filter groove.

[0012] As a preferred technical solution of the present invention, the filter unit also includes a lifting rod, a sliding block, a connecting rod and hydraulic oil, the quenching shell also includes a plurality of vertical slots and a plurality of sliding grooves, the plurality of vertical slots and the plurality of sliding grooves are matched one-to-one, any of the vertical slots is communicated with the corresponding sliding grooves, a plurality of filter units are matched one-to-one with the plurality of vertical slots, any of the lifting rods can be slidably arranged in the corresponding vertical groove, any of the sliding blocks can be slidably arranged in the corresponding sliding groove; any of the sliding grooves is communicated with the corresponding sealing grooves; any of the sliding blocks is connected to the corresponding filter plate through the connecting rod; there is a filtering space between the lifting rod, the sliding block and the quenching shell, and the filtering space is sealed and filled with hydraulic oil.

[0013] As a preferred technical solution of the present invention, the quenching shell is provided with a plurality of annular communication grooves, the plurality of annular communication grooves are matched one-to-one with the plurality of sliding grooves, any horizontal end of any of the annular communication grooves is overlapped and connected with the corresponding connecting part between the sliding groove and the sealing groove, the filtering unit further comprises an annular sealing belt, the annular sealing belt is rotatably and sealedly arranged in the corresponding annular communication groove; the annular sealing belt is provided with a connecting slot hole, the connecting rod is sealedly arranged with the annular sealing belt through the connecting slot hole; The filter assembly also includes a plurality of pressing rods, which are matched with a plurality of lifting rods in a one-to-one manner. The plurality of pressing rods are arranged at equal intervals at the bottom of the filter screen along the width direction of the quenching shell. Any pressing rod is used to lock or release the pressing fit relationship with the corresponding lifting rod. From the end of the filter screen where the height is lower to the end of the filter screen where the height is higher, the width of the filter groove gradually increases, and the height between the pressing rod and the corresponding lifting rod gradually decreases.

[0014] As a preferred technical solution of the present invention, the filter assembly further comprises a filter housing with a hollow interior, the quenching housing is provided with a closed slot, the closed slot is interconnected with a plurality of filter slots, and the filter housing can lock or release its sealing cooperation relationship with the closed slot; It also includes a locking assembly, which includes a locking rod, a horizontal rod, a locking spring, a hinged plate, a hinged spring and a bonding plate. The locking rod is vertically arranged in the quenching shell in a liftable manner. The bottom seal of the locking rod penetrates the quenching shell to the closed slot hole. The locking spring is arranged in the closed slot hole. The two ends of the locking spring are respectively connected to the locking rod and the quenching shell. The bonding plate is arranged on the top of the locking rod. The bonding plate can lock or release its abutting and bonding relationship with the filter screen. The horizontal rod is horizontally connected to the bottom of the locking rod, the other end of the horizontal rod is hinged to the hinge plate, and the two ends of the hinge spring are respectively hinged to the hinge plate and the horizontal rod; the hinge plate can rotate toward the depth of the closed slot, and the hinge plate can lock or release its restrictive relationship with the filter housing.

[0015] A quenching oil filtering method for a heat treatment device comprises the following steps: S1: Controlling the quenching cover to release the matching relationship between the quenching cover and the quenching shell; S2: Continue to control the quenching cover to move in a direction away from the quenching shell. During this period, the steel rope drives the filter screen to move toward the top of the quenching shell to filter and salvage the carbon black and oxide scale in the quenching shell. S3: removing the carbon black and oxide scale on the filter; S4: controlling the quenching cover to return to its original position until the quenching cover is reconnected with the quenching housing; S5: Due to its own weight, the filter slides toward the bottom of the quenching shell and returns to its original position.

[0016] The beneficial effects of the present invention are: In this solution, the filter screen is directly arranged in the quenching shell. When the quenching cover releases its matching relationship with the quenching shell and moves toward the end away from the quenching shell, the filter screen located in the quenching shell will move toward the top of the quenching shell due to the existence of the steel rope. In the process of the filter screen rising, the filter screen will filter the carbon black and oxide scale located in the quenching shell out of the quenching oil. When the filter screen moves to the outside of the quenching oil, the carbon black and oxide scale located on the filter screen are removed, thereby realizing the removal of the carbon black and oxide scale in the quenching shell, without the need to remove the quenching oil in the quenching shell. The quenching oil is transferred to the filtering device for removing the carbon black and scale in the quenching oil, which solves the problem that the existing filtering device for the quenching oil and the heat treatment furnace are designed to be separated from each other. Therefore, when the quenching oil in the heat treatment furnace needs to filter out the carbon black and scale therein, the quenching oil in the heat treatment furnace needs to be transferred to the filtering device, and after being filtered by the filtering device, the filtered quenching oil is transported to the heat treatment furnace; since the quenching oil needs to be continuously transferred and transported during the filtering period, the problem of reducing the overall filtering speed and efficiency of the quenching oil is easily reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 This is an overall diagram of a quenching oil filtering structure of a heat treatment device of the present invention; Figure 2 A cross-sectional view of a quenching oil filtering structure of a heat treatment device of the present invention; Figure 3 For the present invention Figure 2 A magnified image of point A; Figure 4 A schematic structural diagram of a locking assembly of a quenching oil filtering structure of a heat treatment device according to the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B.

[0019] Description of main symbols In the figure: 1, quenching shell; 2, quenching cover; 3, filter screen; 4, steel rope; 5, unloading assembly; 501, abutment block; 502, sealing block; 503, sealing spring; 6, vibration assembly; 601, vibration motor; 602, eccentric block; 603, pressing block; 604, pressing spring; 605, control module; 7, filtering assembly; 701, filter plate; 702, filtering spring; 703, lifting rod; 704, sliding block; 705, connecting rod; 706, hydraulic oil; 707, annular sealing belt; 708, pressing rod; 709, filter housing; 8, locking assembly; 801, locking rod; 802, horizontal rod; 803, locking spring; 804, hinged plate; 805, hinged spring; 806, fitting plate; 807, telescopic block; 808, telescopic spring; 809, driving rod; 810, sealing rod; 811, rotating rod; 812, limiting block. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0021] See also Figure 1-Figure 5, the present embodiment provides a quenching oil filtering structure of a heat treatment device, comprising a quenching shell 1 with quenching oil inside, a quenching cover 2, a filter 3 and a steel rope 4, the filter 3 can be vertically lifted and lowered in the quenching shell 1, the four outer walls of the filter 3 are respectively fitted with the four inner walls in the quenching shell 1, the quenching cover 2 can be horizontally slidably arranged at the top of the quenching shell 1, the quenching cover 2 can lock or release its matching relationship with the quenching shell 1, the two ends of the steel rope 4 are respectively connected to the quenching cover 2 and the filter 3, and the filter 3 can lock or release its matching relationship in the quenching oil; in this scheme, the filter 3 is directly arranged in the quenching shell 1, when the quenching cover 2 releases its matching relationship with the quenching shell 1 and moves toward the end away from the quenching shell 1, due to the existence of the steel rope 4, the filter 3 located in the quenching shell 1 will move toward the top of the quenching shell 1, and when the filter 3 rises During the process, the filter screen 3 will filter the carbon black and oxide scale in the quenching shell 1 out of the quenching oil. When the filter screen 3 is moved to the outside of the quenching oil, the carbon black and oxide scale on the filter screen 3 are removed, and the carbon black and oxide scale in the quenching shell 1 can be removed. There is no need to transfer the quenching oil in the quenching shell 1 to the filtering device and then remove the carbon black and oxide scale in the quenching oil. This solves the problem that the existing filtering device for quenching oil and the heat treatment furnace are separated from each other. Therefore, when the quenching oil in the heat treatment furnace needs to filter out the carbon black and oxide scale therein, the quenching oil in the heat treatment furnace needs to be transferred to the filtering device. After being filtered by the filtering device, the filtered quenching oil is transported to the heat treatment furnace. Since the quenching oil needs to be continuously transferred and transported during the filtration period, it is easy to reduce the overall filtration speed and efficiency of the quenching oil.

[0022] It should be noted here that, in this scheme, the workpiece to be heat treated is moved to the top of the quenching shell 1 by lifting, and then the workpiece to be heat treated is slowly lowered into the quenching shell 1 until the height of the workpiece to be heat treated is lower than the quenching cover 2, and the quenching cover 2 starts to slide and restores its matching relationship with the quenching shell 1. During this period, the filter 3 will move toward the bottom of the quenching shell 1 due to its own weight, and then return to its original position; after the filter 3 returns to its original position, the workpiece to be heat treated is controlled to continue to move toward the bottom of the quenching shell 1, so that the quenching oil can heat treat the workpiece to be heat treated.

[0023] According to the above embodiment, in order to ensure that the carbon black and oxide scale on the filter screen 3 can be removed after the filter screen 3 moves to the top of the liquid surface of the quenching oil, the present solution also includes a discharge assembly 5, the discharge assembly 5 includes an abutment block 501, a sealing block 502 and a sealing spring 503, the side wall of the quenching shell 1 is provided with a discharge slot hole, the discharge slot hole is located at the top of the liquid surface of the quenching oil, the sealing block 502 can be slidably arranged on the discharge slot hole, the two ends of the sealing spring 503 are respectively connected to the sealing block 502 and the side wall of the quenching shell 1, and the sealing block 502 can lock or release its connection with the discharge slot hole. The sealing matching relationship of the slot hole; the abutment block 501 is arranged at the top of one end of the filter screen 3, and the abutment block 501 can lock or release its abutting fitting relationship with the sealing block 502. When the filter screen 3 moves to the top of the quenching oil surface, due to the existence of the abutment block 501, the abutment block 501 is abutted and matched with the sealing block 502, and drives the sealing block 502 to move toward the top, so that the sealing block 502 releases its sealing matching relationship with the discharge slot hole. At this time, the filter screen 3 is located at the discharge slot hole, which facilitates the removal of the carbon black and oxide scale on the filter screen 3 through the discharge slot hole.

[0024] Furthermore, in order to facilitate the removal of carbon black and oxide scale on the filter screen 3, the filter screen 3 of the present embodiment is tilted, and the abutment block 501 is arranged at the top of the end of the filter screen 3 where the height is lower. Such an arrangement enables the carbon black and oxide scale on the filter screen 3 to move to the end of the filter screen 3 where the height is lower due to the action of gravity, so that the carbon black and oxide scale are closer to the discharge chute, thereby facilitating the subsequent removal of the carbon black and oxide scale on the filter screen 3.

[0025] Furthermore, in order to automatically remove the carbon black and oxide scale on the filter 3, the present solution is further provided with a vibration component 6, the vibration component 6 includes a vibration motor 601 and an eccentric block 602, the vibration motor 601 is arranged outside the side wall of the quenching shell 1, the output end of the vibration motor 601 passes through the side wall of the quenching shell 1 to the inside of the quenching shell 1, the eccentric block 602 is provided with a rotating hole, the eccentric block 602 is coaxially connected to the output end of the vibration motor 601 through the rotating hole, the central axis of the eccentric block 602 and the central axis of the rotating hole do not overlap each other, and the eccentric block 602 can lock or release its matching relationship with the end of the filter 3 set at a higher height; by providing the vibration component 6, when the vibration motor 601 starts to work, it will drive the eccentric block 602 to rotate, thereby realizing that the eccentric block 602 continuously knocks the filter 3, so that the carbon black and oxide scale on the filter 3 will gradually move toward the direction of the discharge slot hole until they move out of the discharge slot hole.

[0026] In addition, in order to ensure that the vibration motor 601 will not start working until the filter screen 3 moves to the specified height, the vibration component 6 of the present solution also includes a pressing block 603, a pressing spring 604 and a control module 605. The side wall of the quenching shell 1 is provided with a control slot hole, and the control module 605 is arranged in the control slot hole. The control module 605 is connected to the vibration motor 601 for communication. The pressing block 603 is slidably arranged in the control slot hole, and the pressing spring 604 is arranged in the control slot hole. The two ends of the pressing spring 604 are respectively connected to the pressing block 603 and the quenching shell 1, and the pressing block 603 extends out of the control slot. The bottom of one end of the hole is set at an angle, and the vertical length of the end of the pressing block 603 extending out of the control slot hole gradually increases from the direction approaching the control module 605. The pressing block 603 can lock or release its pressing cooperation relationship with the control module 605. By providing the pressing block 603, when the filter screen 3 rises to a specified height, the filter screen 3 will drive the pressing block 603 to move the pressing block 603 toward the control slot hole until the pressing block 603 presses the control module 605. The control module 605 will control the vibration motor 601 to start working, so that the eccentric block 602 can knock on the filter screen 3.

[0027] It is worth noting that, since the filter 3 of the present scheme filters the quenching oil in the quenching shell 1 once each time the workpiece to be heat treated completes the heat treatment, during a single filtration, the carbon black and the oxide scale are too small in size, so the filter 3 cannot remove the carbon black and the oxide scale from the quenching oil. Moreover, since the carbon black and the oxide scale have the property of adsorption, after the filter 3 is reset, the carbon black and the oxide scale become larger in size at this time, so the carbon black and the oxide scale can only be confined to the bottom of the filter 3. In order to solve the problem that the carbon black and the oxide scale are located at the bottom of the filter 3 and cannot be removed from the quenching shell 1, the present scheme further provides a filter assembly 7, which includes a plurality of filter units. A plurality of filter slots and a plurality of sealing slots are provided at the bottom of the quenching shell 1. The plurality of filter units correspond to the plurality of filter slots one by one. The filter unit is arranged in the corresponding filter slot; a plurality of sealing slots are matched with a plurality of filter slots in a one-to-one correspondence, and any sealing slot is interconnected with the corresponding filter slot; a plurality of filter slots are arranged at equal intervals along the width direction of the quenching shell 1; the filter unit includes a filter plate 701 and a filter spring 702, the filter spring 702 is arranged in the sealing slot, the filter plate 701 is slidably arranged in the sealing slot, the two ends of the filter spring 702 are respectively connected to the filter plate 701 and the quenching shell 1, and the filter plate 701 can lock or release its sealing matching relationship with the corresponding filter slot; by providing the filter plate 701, when the filter plate 701 releases its sealing matching relationship with the filter slot, the carbon black and oxide scale at the bottom of the filter net 3 can flow out of the quenching shell 1 through the filter slot, thereby realizing the removal of the carbon black and oxide scale at the bottom of the filter net 3. It should be noted that the function of the filter spring 702 is to reset the filter plate 701.

[0028] According to the above embodiment, in order to drive the filter plate 701 to move, the filter unit of this solution also includes a lifting rod 703, a sliding block 704, a connecting rod 705 and hydraulic oil 706, and the quenching shell 1 also includes a plurality of vertical slots and a plurality of sliding grooves, and the plurality of vertical slots and the plurality of sliding grooves are matched one-to-one, and any vertical slot is connected to the corresponding sliding groove, and the plurality of filter units are matched one-to-one with the plurality of vertical slots, and any lifting rod 703 can be slidably disposed in the corresponding vertical groove, and any sliding block 704 can be slidably disposed in the corresponding sliding groove; Any sliding groove is interconnected with the corresponding sealing groove; any sliding block 704 is interconnected with the corresponding filter plate 701 through the connecting rod 705; there is a filtering space between the lifting rod 703, the sliding block 704 and the quenching shell 1, and the filtering space is sealed and filled with hydraulic oil 706. By controlling the sliding of the lifting rod 703, the lifting rod 703 will press the hydraulic oil 706 to move, thereby realizing the movement of the sliding block 704 along the sliding groove, and then driving the filter plate 701 connected to the sliding block 704 to slide, realizing the sliding effect of the filter plate 701.

[0029] In addition, according to the above embodiment, in order to ensure the normal sliding of the filter plate 701, it is necessary to ensure that the filter space is always in a sealed state. Based on this, it is necessary to ensure that the sliding block 704 of this scheme is always in a sealed and isolated state between the sliding groove and the sealing groove during the sliding process; for this reason, the quenching shell 1 of this scheme is provided with a plurality of annular connecting grooves, and the plurality of annular connecting grooves are matched one-to-one with the plurality of sliding grooves, and any horizontal end of any annular connecting groove is overlapped and connected with the corresponding connecting point between the sliding groove and the sealing groove, and the filter unit also includes an annular sealing belt 707, which is rotatably sealed in the corresponding annular connecting groove; the annular sealing belt 707 is provided with a connecting slot hole, and the connecting rod 705 is sealed with the annular sealing belt 707 through the connecting slot hole; by providing the annular sealing belt 707, it can be ensured that the sliding block 704 is always in a sealed and isolated state between the sliding groove and the sealing groove during the sliding process.

[0030] In addition, in order to realize the sliding of the lifting rod 703, the filter assembly 7 of the present scheme also includes a plurality of pressing rods 708, and the plurality of pressing rods 708 are matched with the plurality of lifting rods 703 in a one-to-one manner. The plurality of pressing rods 708 are arranged at equal intervals at the bottom of the filter screen 3 along the width direction of the quenching shell 1, and any pressing rod 708 is used to lock or release the pressing and fitting relationship between it and the corresponding lifting rod 703; from the end of the filter screen 3 with a lower setting height to the end of the filter screen 3 with a higher setting height, the width of the filter groove increases gradually, and the spacing between the pressing rod 708 and the corresponding lifting rod 703 decreases gradually; by providing the pressing rod 708, when the filter screen 3 moves toward the bottom of the quenching shell 1, the pressing rod 708 descends along with the descent of the filter screen 3 until the pressing rod 708 realizes its pressing and fitting relationship with the lifting rod 703, thereby realizing the pressing effect of the lifting rod 703. It should be noted that, since the filter screen 3 of the present solution is tilted, the size of the carbon black and the oxide scale at the bottom of the filter screen 3 is getting bigger and bigger from the end of the filter screen 3 with a lower setting height to the end of the filter screen 3 with a higher setting height. Based on this, the width of the filter tank increases gradually from the end of the filter screen 3 with a lower setting height to the end of the filter screen 3 with a higher setting height, and the spacing between the pressing rod 708 and the corresponding lifting rod 703 decreases gradually. It is also worth noting that the outer diameter of the lifting rod 703 of the present solution is equal to the outer diameter of the pressing rod 708, and the central axis of the lifting rod 703 and the central axis of the corresponding pressing rod 708 are on the same vertical line.

[0031] According to the above embodiment, in order to solve the carbon black and oxide scale flowing out of the filter tank, the filter assembly 7 of this scheme also includes a filter shell 709 with a hollow interior, and the quenching shell 1 is provided with a closed slot hole, which is interconnected with a number of filter tanks, and the filter shell 709 can lock or release its sealing cooperation relationship with the closed slot hole; by providing the filter shell 709, when the filter plate 701 releases its sealing cooperation relationship with the filter tank, the quenching oil as well as the carbon black and oxide scale will flow into the filter shell 709 through the filter tank, thereby realizing the treatment of the carbon black and oxide scale. In addition, it should be noted that due to the existence of the filter shell 709, the filter shell 709 is sealed and matched with the quenching shell 1, so that the amount of quenching oil flowing from the filter tank to the filter shell 709 in a single time is controllable and will not cause excessive waste.

[0032] Furthermore, in order to improve the safety of the device of this scheme, it is required that during the period when the filter plate 701 releases its sealing cooperation relationship with the filter tank, the filter housing 709 is in a locked state and cannot be pulled out. Based on this, this scheme also includes a locking assembly 8, which includes a locking rod 801, a horizontal rod 802, a locking spring 803, a hinge plate 804, a hinge spring 805 and a fitting plate 806. The locking rod 801 is vertically arranged in the quenching housing 1 in a liftable manner. The bottom seal of the locking rod 801 passes through the quenching housing 1 to the closed slot hole. The locking spring 803 is arranged in the closed slot hole. The locking spring 805 The two ends of 03 are respectively connected to the locking rod 801 and the quenching shell 1, and the fitting plate 806 is arranged on the top of the locking rod 801, and the fitting plate 806 can lock or release its abutting fitting relationship with the filter screen 3; in addition, the horizontal rod 802 is horizontally connected to the bottom of the locking rod 801, and the other end of the horizontal rod 802 is hinged to the hinge plate 804, and the two ends of the hinge spring 805 are respectively hinged to the hinge plate 804 and the horizontal rod 802; the hinge plate 804 can rotate toward the depth of the closed slot, and the hinge plate 804 can lock or release its restrictive relationship with the filter shell 709; by setting a hinge Plate 804, when the filter housing 709 and the closed slot are in a sealed fit, the filter housing 709 and the hinge plate 804 are in abutment with each other. Due to the structural characteristics of the hinge plate 804, the hinge plate 804 can be rotated toward the depth of the closed slot, so that the filter housing 709 can smoothly achieve a sealed fit with the closed slot; when the filter housing 709 and the closed slot are sealed, the hinge plate 804 will return to its original position, and the hinge plate 804 and the filter housing 709 are in abutment with each other. At this time, the filter housing 709 is confined in the closed slot due to its fit with the hinge plate 804 and cannot be pulled out; Until the filter screen 3 moves to the top of the quenching shell 1, and the filter screen 3 cooperates with the fitting plate 806 and controls the fitting plate 806 to move toward the top, so that the locking rod 801 connected to the fitting plate 806 moves toward the top together, and then the hinged plate 804 moves following the movement of the locking rod 801. Therefore, when the filter screen 3 moves to the top of the quenching shell 1, the hinged plate 804 releases its fitting restriction relationship with the filter shell 709, and at this time the filter plate 701 and the filter tank are in a mutually sealed fitting relationship, and the filter shell 709 can be pulled out to remove the carbon black and oxide scale inside it.

[0033] According to the above embodiment, in order to prevent the filter screen 3 from starting to drop before the filter housing 709 is inserted back into the closed slot, causing the filter plate 701 to release its sealing cooperation relationship with the filter slot, which will cause waste of quenching oil, the locking assembly 8 of this scheme also includes a telescopic block 807, a telescopic spring 808, a driving rod 809, a sealing rod 810, a rotating rod 811 and a limiting block 812. A locking groove and a locking groove hole are provided on the side wall of one end of the quenching housing 1 close to the fitting plate 806. The locking groove hole is respectively connected to the locking groove and the closed slot hole, and the sealing rod 810 is slidably and sealedly arranged in the locking groove. The driving rod 809 is in the locking groove, the middle end of the driving rod 809 is hinged to the quenching shell 1, one end of the sealing rod 810 can be slidably arranged at the bottom end of the driving rod 809 along the axial direction of the driving rod 809, the other end of the sealing rod 810 is connected to the telescopic block 807, the telescopic spring 808 is arranged in the locking groove, and the two ends of the telescopic spring 808 are respectively connected to the quenching shell 1 and the bottom end of the driving rod 809; the rotating rod 811 is located in the locking groove, and the rotating rod 811 is located at the top of the driving rod 809, and the middle end of the rotating rod 811 is hinged to the quenching shell 1, limiting The control block 812 can be slidably set at the top of the rotating rod 811 along the axial direction of the rotating rod 811, and the top of the driving rod 809 can be hingedly set at the bottom of the rotating rod 811 by sliding along the axial direction of the rotating rod 811. The quenching shell 1 is provided with a limiting slot, which is located at the top of the liquid surface of the quenching oil. The limiting block 812 can be slidably set in the limiting slot, and the limiting block 812 can lock or release its fitting restriction relationship with the bottom of the filter screen 3; when the filter screen 3 moves to the top of the quenching shell 1 and the filter shell 709 is pulled out, due to the action of the telescopic spring 808, the driving rod 809 The rod 809 starts to rotate and controls the rotating rod 811 hinged thereto to rotate, and finally causes the limiting block 812 to extend out of the limiting slot. At this time, the limiting block 812 is arranged in a close fit with the bottom of the filter screen 3 to limit the descent of the filter screen 3; when the filter housing 709 is re-matched with the closed slot, the filter housing 709 controls the telescopic block 807 to slide, thereby driving the driving rod 809 to rotate, and then after the rotating rod 811 is rotated, the limiting block 812 is retracted into the limiting slot, so that the limiting block 812 releases its restrictive relationship with the filter screen 3, and the filter screen 3 can descend normally.

[0034] In addition, the present invention also provides a quenching oil filtering method for a heat treatment device, comprising the following steps: S1: Control the quenching cover 2 to release the matching relationship between it and the quenching shell 1; S2: Continue to control the quenching cover 2 to move away from the quenching shell 1. During this period, the steel rope 4 drives the filter screen 3 to move toward the top of the quenching shell 1 to filter and salvage the carbon black and oxide scale in the quenching shell 1; S3: removing the carbon black and oxide scale on the filter screen 3; S4: Control the quenching cover 2 to return to its original position until the quenching cover 2 is reconnected with the quenching housing 1; S5: Due to its own weight, the filter screen 3 slides toward the bottom of the quenching shell 1 and returns to its original position.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A quenching oil filtering structure for a heat treatment device, characterized in that: It includes a quenching shell with quenching oil inside, a quenching cover, a filter screen and a steel rope. The filter screen can be vertically raised and lowered in the quenching shell. The four outer walls of the filter screen are respectively fitted with the four inner walls of the quenching shell. The quenching cover can be horizontally slidably arranged on the top of the quenching shell. The quenching cover can lock or release its matching relationship with the quenching shell. The two ends of the steel rope are respectively connected to the quenching cover and the filter screen. The filter screen can be locked or released from its matching relationship in the quenching oil.

2. The quenching oil filtering structure of a heat treatment device according to claim 1, characterized in that: It also includes a discharge assembly, which includes an abutment block, a sealing block and a sealing spring. A discharge slot is provided on the side wall of the quenching shell, and the discharge slot is located at the top of the liquid surface of the quenching oil. The sealing block can be slidably arranged on the discharge slot, and the two ends of the sealing spring are respectively connected to the sealing block and the side wall of the quenching shell, and the sealing block can lock or release its sealing cooperation relationship with the discharge slot; the abutment block is arranged at the top of one end of the filter screen, and the abutment block can lock or release its abutting and fitting relationship with the sealing block.

3. The quenching oil filtering structure of a heat treatment device according to claim 2, characterized in that: The filter screen is arranged obliquely, and the abutment block is arranged at the top of one end of the filter screen at a lower height.

4. The quenching oil filtering structure of a heat treatment device according to claim 1, characterized in that: It also includes a vibration component, which includes a vibration motor and an eccentric block. The vibration motor is arranged outside the side wall of the quenching shell, and the output end of the vibration motor passes through the side wall of the quenching shell to the inside of the quenching shell. The eccentric block is provided with a rotating hole, and the eccentric block is coaxially connected to the output end of the vibration motor through the rotating hole. The central axis of the eccentric block and the central axis of the rotating hole do not overlap each other, and the eccentric block can lock or release its matching relationship with the end of the filter screen set at a higher height.

5. The quenching oil filtering structure of a heat treatment device according to claim 4, characterized in that: The vibration assembly also includes a pressing block, a pressing spring and a control module. A control slot is opened on the side wall of the quenching shell. The control module is arranged in the control slot. The control module is communicatively connected with the vibration motor. The pressing block can be slidably arranged in the control slot. The pressing spring is arranged in the control slot. Both ends of the pressing spring are respectively connected to the pressing block and the quenching shell. The bottom of one end of the pressing block extending out of the control slot is inclined. The vertical length of one end of the pressing block extending out of the control slot gradually increases from the direction approaching the control module. The pressing block can lock or release its pressing fit relationship with the control module.

6. The quenching oil filtering structure of a heat treatment device according to claim 1, characterized in that: It also includes a filter assembly, which includes a plurality of filter units, a plurality of filter slots and a plurality of sealing slots are provided at the bottom of the quenching shell, the plurality of filter units are matched with the plurality of filter slots in a one-to-one correspondence, and any of the filter units is arranged in a corresponding filter slot; the plurality of sealing slots are matched with the plurality of filter slots in a one-to-one correspondence, and any of the sealing slots is connected to the corresponding filter slot; the plurality of filter slots are arranged at equal intervals along the width direction of the quenching shell; The filter unit includes a filter plate and a filter spring. The filter spring is arranged in the sealing groove. The filter plate can be slidably arranged in the sealing groove. The two ends of the filter spring are respectively connected to the filter plate and the quenching shell. The filter plate can lock or release its sealing cooperation relationship with the corresponding filter groove.

7. The quenching oil filtering structure of a heat treatment device according to claim 6, characterized in that: The filter unit also includes a lifting rod, a sliding block, a connecting rod and hydraulic oil. The quenching shell also includes a plurality of vertical slots and a plurality of sliding slots. The plurality of vertical slots and the plurality of sliding slots are matched one-to-one. Any of the vertical slots is communicated with the corresponding sliding slots. A plurality of filter units are matched one-to-one with the plurality of vertical slots. Any of the lifting rods can be slidably arranged in the corresponding vertical slots. Any of the sliding blocks can be slidably arranged in the corresponding sliding slots. Any of the sliding slots is communicated with the corresponding sealing slots. Any of the sliding blocks is connected to the corresponding filter plate through the connecting rod. There is a filtering space between the lifting rod, the sliding block and the quenching shell, and the filtering space is sealed and filled with hydraulic oil.

8. The quenching oil filtering structure of a heat treatment device according to claim 7, characterized in that: The quenching shell is provided with a plurality of annular communication grooves, which are matched with the plurality of sliding grooves in a one-to-one manner, and any horizontal end of any annular communication groove is overlapped and connected with the corresponding connecting part between the sliding groove and the sealing groove, and the filter unit further comprises an annular sealing belt, which is rotatably and sealedly arranged in the corresponding annular communication groove; the annular sealing belt is provided with a connecting slot hole, and the connecting rod is sealedly arranged with the annular sealing belt through the connecting slot hole; The filter assembly also includes a plurality of pressing rods, which are matched with a plurality of lifting rods in a one-to-one manner. The plurality of pressing rods are arranged at equal intervals at the bottom of the filter screen along the width direction of the quenching shell. Any pressing rod is used to lock or release the pressing fit relationship with the corresponding lifting rod. From the end of the filter screen where the height is lower to the end of the filter screen where the height is higher, the width of the filter groove increases gradually, and the distance between the pressing rod and the corresponding lifting rod decreases gradually.

9. The quenching oil filtering structure of a heat treatment device according to claim 7, characterized in that: The filter assembly further comprises a filter housing with a hollow interior, the quench housing is provided with a closed slot, the closed slot is communicated with a plurality of filter slots, and the filter housing can lock or release its sealing cooperation relationship with the closed slot; It also includes a locking assembly, which includes a locking rod, a horizontal rod, a locking spring, a hinged plate, a hinged spring and a bonding plate. The locking rod is vertically arranged in the quenching shell in a liftable manner. The bottom seal of the locking rod penetrates the quenching shell to the closed slot hole. The locking spring is arranged in the closed slot hole. The two ends of the locking spring are respectively connected to the locking rod and the quenching shell. The bonding plate is arranged on the top of the locking rod. The bonding plate can lock or release its abutting and bonding relationship with the filter screen. The horizontal rod is horizontally connected to the bottom of the locking rod, the other end of the horizontal rod is hinged to the hinge plate, and the two ends of the hinge spring are respectively hinged to the hinge plate and the horizontal rod; the hinge plate can rotate toward the depth of the closed slot, and the hinge plate can lock or release its restrictive relationship with the filter housing.

10. A quenching oil filtering method for a heat treatment device, applicable to the quenching oil filtering structure of a heat treatment device according to any one of claims 2 to 9, characterized in that: The following steps are involved: S1: Controlling the quenching cover to release the matching relationship between the quenching cover and the quenching shell; S2: Continue to control the quenching cover to move in a direction away from the quenching shell. During this period, the steel rope drives the filter screen to move toward the top of the quenching shell to filter and salvage the carbon black and oxide scale in the quenching shell. S3: removing the carbon black and oxide scale on the filter; S4: controlling the quenching cover to return to its original position until the quenching cover is reconnected with the quenching housing; S5: Due to its own weight, the filter slides toward the bottom of the quenching shell and returns to its original position.

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