CN215560463U

CN215560463U - Vacuum oil quenching furnace with quenching cooling protection function

Info

Publication number: CN215560463U
Application number: CN202121108289.0U
Authority: CN
Inventors: 陈志远
Original assignee: Hangzhou Dayou Heat Treatment Co ltd
Current assignee: Hangzhou Dayou Heat Treatment Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-01-18
Anticipated expiration: 2031-05-21

Abstract

The application provides a vacuum oil quenching furnace with quenching cooling protect function, belongs to cooling protect function's vacuum oil quenching furnace technical field. This vacuum oil quenching furnace with quenching cooling protect function, including protector, material feeding unit, guenching unit and heat sink, pay-off subassembly fixed mounting in top in the casing, finger cylinder fixed mounting in the telescopic link stretches out the end, graphite pipe fixed mounting in shells inner wall, put the flitch install in the quenching case, measuring component fixed mounting in one side in the quenching case, first water pump install in U-shaped pipe one end, the second water pump install in oil pipe, the tuber pipe with the fan intercommunication, this equipment improve change quench oil extravagant cause waste, artifical defeated material probably scald personnel, quench oil add lead to with impurity mixture probably cause the apparatus jam problem, fluid cooling effect is called poor and can't carry out heat energy reuse.

Description

Vacuum oil quenching furnace with quenching cooling protection function

Technical Field

The application relates to the field of vacuum oil quenching furnaces with cooling protection functions, in particular to a vacuum oil quenching furnace with a quenching cooling protection function.

Background

At present, vacuum heat treatment is a novel heat treatment technology combining a vacuum technology and a heat treatment technology, the vacuum air-cooled quenching capacity is greatly improved, and the surface of a quenched workpiece has the advantages of good brightness, small deformation, high efficiency, energy conservation, no pollution and the like. The metal material needs to be cooled according to a preset mode and a preset speed in order to obtain expected organization and performance, the surface of a workpiece processed by the vacuum oil quenching furnace is good in brightness, and therefore the vacuum oil quenching furnace is widely used.

How to invent a vacuum oil quenching furnace with a quenching cooling protection function to improve the problems becomes a problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to compensate for above not enough, the application provides a vacuum oil quenching stove with quenching cooling protect function, aims at improving and changes the extravagant waste that causes of quenching oil, artifical nurse defeated material probably scalds personnel, quenching oil adds and leads to leading to probably causing the apparatus to block up problem, fluid cooling effect be poor and can't carry out heat energy reuse with impurity mixture.

The embodiment of the application provides a vacuum oil quenching furnace with quenching cooling protect function, including protector, material feeding unit, guenching unit and heat sink.

The protection device comprises a protection frame, the feeding device comprises a shell, a first motor, a feeding assembly, a telescopic rod, a finger cylinder, a graphite pipe and a storage frame, the first motor is fixedly arranged on one side of the shell, the feeding assembly is fixedly arranged at the top in the shell, the telescopic rod is fixedly arranged on the feeding assembly, the finger cylinder is fixedly arranged at the extending end of the telescopic rod, the graphite pipe is fixedly arranged on the inner wall of the shell, the storage frame is fixedly arranged on the shell and aligned with the graphite pipe, the quenching device comprises a quenching box, a second motor, a rotating rod, a stirring rod, a material placing plate, a measuring assembly and a warning assembly, the top of the quenching box is communicated with the bottom of the shell, the second motor is fixedly arranged at the bottom of the quenching box, and the rotating rod is connected with the output end of the second motor in a key manner, the rotating rod is rotatably connected with the bottom of the quenching box, the stirring rod is fixedly arranged on the rotating rod, the material placing plate is arranged in the quenching box, the measuring component is fixedly arranged on one side in the quenching box, the warning component is fixedly arranged on the outer portion of the quenching box and electrically connected with the measuring component, the cooling device comprises a water tank, a U-shaped pipe, a first water pump, an oil tank, a second water pump, an oil pipe, a fan and an air pipe, the U-shaped pipe is arranged in the water tank, the first water pump is arranged at one end of the U-shaped pipe, the oil tank is communicated with the other end of the U-shaped pipe, the second water pump is arranged on the oil pipe, one end of the oil pipe is communicated with the inner portion of the oil tank, the other end of the oil pipe is communicated with the inner portion of the quenching box, the fan is arranged on the shell, the air pipe is communicated with the fan, and one end of the air pipe is communicated with the inner portion of the quenching box, the other end of the air pipe is communicated with the shell.

In the implementation process, the protective frame is connected with the shell in a matching way to realize the effect of fixing equipment and prevent personnel from being scalded when approaching, the first motor is connected with the feeding component in a matching way to realize the effect of moving metal raw materials, the effect of clamping the metal raw materials can be realized by matching the telescopic rod with the finger cylinder, the first motor is connected with the feeding component in a matching way, the telescopic rod is connected with the finger cylinder in a matching way, the feeding component is connected with the telescopic rod in a matching way to realize the effect of mechanical feeding, the graphite tube is connected with the interior of the shell to realize the heating effect, the storage frame is connected with the interior of the shell to realize the effect of storing metal materials, the storage frame has the same European matching effect as the position of the graphite tube to realize the heating effect of the metal materials, the quenching box is connected with the shell to realize the feeding effect, the second motor is connected with the rotating rod, the rotating rod is connected with the stirring rod to realize the effect of rotating and stirring, the material placing plate is connected and matched with the quenching box to achieve the effect of placing materials on the material placing plate, the measuring assembly is connected with the warning assembly in a matched manner to achieve the effect of warning external workers when the oil level reaches a certain height, the measuring assembly has a certain protection effect, the water tank is matched with the U-shaped pipe to achieve the effect of cooling high-temperature oil in the pipe, the oil is pumped into the oil tank under the matching of the first water pump and the U-shaped pipe, the cooled oil is pumped into the quenching box again under the action of the oil tank and the second water pump to perform next quenching operation, the effect of recycling is achieved, residual heat in the quenching box is recycled into the shell under the matching of the fan and the air pipe to achieve the effect of preheating metal materials at any time, in the integral using process, firstly, the effect of mechanically clamping the brief material and the protective frame to protect the workers is achieved, and secondly, the quenching oil level is observed under the matching of the measuring assembly and the warning assembly, prevent to refuel too high emergence danger, through cooling and filtering to fluid at last, reuse reaches the effect of saving quenching oil, and fan and tuber pipe transport the waste heat and reached the effect of waste heat metal material, save heating time, whole safety is energy-conserving.

In a specific embodiment, the feeding assembly comprises a threaded rod, a sliding block and a limiting block, the threaded rod is rotatably installed on the limiting block, the sliding rod is fixedly installed on the limiting block, the sliding block is installed on the threaded rod in a threaded mode, the sliding block is slidably installed on the sliding rod, and the limiting block is fixedly installed on the shell.

In the above-mentioned realization process, the threaded rod is connected with the cooperation of slide bar, slider and has reached the transportation effect to metal material, and it is spacing that stopper and threaded rod are connected to reach the delivery position, has increased the transportation position accuracy, need not manual operation, promotes the security performance.

In a specific embodiment, the shell is provided with a feed opening, and the feed opening is aligned with the top of the quenching box.

In the implementation process, the blanking opening is aligned with the quenching box, so that the blanking accuracy of the metal raw material is achieved, and the metal material is conveniently blanked.

In a specific embodiment, the graphite tube is provided in plurality, and the graphite tube is arranged in an annular array in the shell.

In the implementation process, the graphite tube is connected with the shell and matched with the shell to heat the metal raw material, the shell is arranged in an annular array to achieve the large-area heat collection effect of the redundant metal, and the heating rate is increased.

In a specific embodiment, the quenching box is provided with a drain pipe which is communicated with the bottom of the quenching box, and the drain pipe is provided with an electromagnetic valve which is arranged on the drain pipe.

In the above-mentioned realization in-process, the drain pipe reaches the effect of discharging the sewage of quenching case after wasing with quenching bottom of the case intercommunication, and solenoid valve and drain pipe connection cooperation have reached and have carried out the effect of blockade to fluid, prevent the fluid seepage under the condition that does not need the drainage.

In a specific embodiment, the stirring rod is provided with a brush, and the brush is attached to the bottom of the material placing plate.

In the above-mentioned realization process, the cooperation of puddler and brush is cleaned putting flitch bottom impurity, has avoided impurity too much to remain to block up and has put flitch bottom, leads to influencing the cooling effect.

In a specific embodiment, the measuring assembly comprises a sleeve, a first electrode plate, a second electrode plate, a third electrode plate and a floating ball, the sleeve is fixedly installed on one side of the quenching box, the first electrode plate is installed in the sleeve, the second electrode plate is installed in the sleeve, the third electrode plate is connected with the inner wall of the sleeve in a sliding mode, and the floating ball is fixedly connected with the third electrode plate.

In the implementation process, the sleeve, the floating ball and the third electrode plate are connected and matched to lift the floating ball by oil liquid to jack the third electrode plate to be connected with the first electrode plate or the second electrode plate, so that early warning is performed on the outside, and workers can timely process the equipment.

In a particular embodiment, the U-shaped tubes are provided with a filter assembly mounted to the U-shaped tubes.

In the implementation process, the U-shaped pipe connection filtering assembly filters and screens impurities in the passing quenching oil, so that the impurities in the quenching oil cannot block the pipe orifice to cause equipment damage.

In a particular embodiment, the tank is provided with a fan fixedly mounted on top of the tank.

In the implementation process, the fan is connected with the top of the oil tank, so that the secondary cooling treatment is performed on the entering quenching oil, and the cooling rate of the quenching oil is increased.

In a specific embodiment, the warning assembly includes a first warning light and a second warning light, the first warning light is electrically connected to the first electrode plate, and the second warning light is electrically connected to the second electrode plate.

In the implementation process, the first warning lamp is connected with the first electrode plate to achieve the effect of warning flicker when the first electrode plate is connected to the third electrode plate, and the second warning lamp is connected with the second electrode plate to achieve the effect of warning flicker when the second electrode plate is connected to the third electrode plate.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a vacuum oil quenching furnace with quenching cooling protection function according to an embodiment of the present application;

FIG. 2 is a schematic side view of a vacuum oil quenching furnace with quenching cooling protection function according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a guard according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a feeding device provided in an embodiment of the present application;

FIG. 5 is a schematic structural view of a feeding assembly provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a quenching apparatus provided in an embodiment of the present application;

FIG. 7 is a schematic view of a material shelf structure provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a measurement assembly provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a warning device according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a cooling device according to an embodiment of the present application.

In the figure: 100-a guard; 110-a protective frame; 200-a feeding device; 210-a housing; 211-a feed opening; 220-a first motor; 230-a feed assembly; 231-a threaded rod; 232-sliding bar; 233-slide block; 234-a limiting block; 240-telescopic rod; 250-finger cylinder; 260-graphite tube; 270-a storage rack; 300-a quenching device; 310-quenching box; 311-drain pipe; 3111-a solenoid valve; 320-a second motor; 330-rotating rod; 331-a stirring rod; 332-a brush; 340-material shelves; 350-a measurement component; 351-a sleeve; 352-a first electrode sheet; 353-a second electrode plate; 354-a third electrode sheet; 355-a floating ball; 360-an alert component; 361-a first warning light; 362-a second warning light; 400-a cooling device; 410-a water tank; 420-a U-shaped tube; 421-a first water pump; 422-a filter assembly; 430-oil tank; 440-a fan; 450-a second water pump; 451-oil pipe; 460-a fan; 461-wind pipe.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and 2, the present application provides a vacuum oil quenching furnace with quenching cooling protection function, which includes a protection device 100, a feeding device 200, a quenching device 300, and a cooling device 400.

Referring to fig. 3, the protection device 100 includes a protection frame 110.

Referring to fig. 4 and 5, the feeding device 200 includes a housing 210, a first motor 220, a feeding assembly 230, a telescopic rod 240, a finger cylinder 250, a graphite tube 260 and a storage rack 270, the first motor 220 is fixedly installed at one side of the housing 210, the housing 210 is provided with a feed opening 211, the feed opening 211 is aligned with the top of the quenching tank 310, the feeding assembly 230 is fixedly installed at the top inside of the housing 210, the feeding assembly 230 includes a threaded rod 231, a sliding rod 232, a sliding block 233 and a limiting block 234, the threaded rod 231 is rotatably installed at the limiting block 234, the sliding rod 232 is fixedly installed at the limiting block 234, the sliding block 233 is threadedly installed with the threaded rod 231, the sliding block 233 is slidably installed at the sliding rod 232, the limiting block 234 is fixedly installed at the housing 210, the telescopic rod 240 is fixedly installed at the feeding assembly 230, the finger cylinder 250 is fixedly installed at the extending end of the telescopic rod 240, the graphite tube 260 is fixedly installed at the inner wall of the housing 210, and the graphite tube 260 is provided with a plurality of graphite tubes, the graphite tubes 260 are arranged in an annular array in the housing 210, the storage racks 270 are fixedly mounted to the housing 210, and the storage racks 270 are aligned with the graphite tubes 260.

Referring to fig. 6, 7, 8 and 9, the quenching apparatus 300 includes a quenching box 310, a second motor 320, a rotating rod 330, a stirring rod 331, a material placing plate 340, a measuring assembly 350 and a warning assembly 360, the top of the quenching box 310 is communicated with the bottom of the housing 210, the quenching box 310 is provided with a water discharging pipe 311, the water discharging pipe 311 is communicated with the bottom of the quenching box 310, the water discharging pipe 311 is provided with an electromagnetic valve 3111, the electromagnetic valve 3111 is installed at the water discharging pipe 311, the second motor 320 is fixedly installed at the bottom of the quenching box 310, the rotating rod 330 is connected with the output end of the second motor 320, the rotating rod 330 is rotatably connected with the bottom of the quenching box 310, the stirring rod 331 is fixedly installed at the rotating rod 330, the stirring rod 331 is provided with a brush 332, the brush 332 is attached to the bottom of the material placing plate 340, the material placing plate 340 is installed at the quenching box 310, the measuring assembly 350 is fixedly installed at one side in the quenching box 310, the measuring assembly 350 includes a sleeve 351, a first electrode plate 352, Second electrode piece 353, third electrode piece 354 and floater 355, sleeve 351 fixed mounting is in quenching case 310 one side, first electrode piece 352 is installed in sleeve 351, second electrode piece 353 is installed in sleeve 351, third electrode piece 354 is in sleeve 351 inner wall sliding connection, floater 355 and third electrode piece 354 fixed connection, warning subassembly 360 fixed mounting is in quenching case 310 outside and measuring component 350 electric connection, warning subassembly 360 is including first warning light 361 and second warning light 362, first warning light 361 and first electrode piece 352 electric connection, second warning light 362 and second electrode piece 353 electric connection.

Referring to fig. 2 and 10, the cooling device 400 includes a water tank 410, a U-shaped pipe 420, a first water pump 421, an oil tank 430, a second water pump 450, an oil pipe 451, a blower 460, and an air pipe 461, wherein the U-shaped pipe 420 is installed in the water tank 410, the U-shaped pipe 420 is provided with a filter assembly 422, the filter assembly 422 is installed on the U-shaped pipe 420, the first water pump 421 is installed at one end of the U-shaped pipe 420, the oil tank 430 is communicated with the other end of the U-shaped pipe 420, the second water pump 450 is installed on the oil pipe 451, one end of the oil pipe 451 is communicated with the inside of the oil tank 430, the oil tank 430 is provided with a fan 440, the fan 440 is fixedly installed at the top of the oil tank 430, the other end of the oil pipe 451 is communicated with the inside of the quenching tank 310, the blower 460 is installed on the housing 210, the air pipe 461 is communicated with the blower 460, one end of the air pipe 461 is communicated with the inside of the quenching tank 310, and the other end of the housing 210 is communicated.

The working principle of the vacuum oil quenching furnace with the quenching cooling protection function is as follows: when the metal material quenching device is used, metal materials to be heated are placed in the shell 210, the graphite pipe 260 heats the metal materials placed on the storage rack 270, the first motor 220 is turned on, the feeding assembly 230 drives the telescopic rod 240 to move towards the metal materials, the telescopic rod 240 extends downwards, the finger cylinder 250 aligns with the metal materials to work and clamp, the finger cylinder 250 clamps the metal materials, the feeding assembly 230 drives the finger cylinder 250 of the telescopic rod 240 to move towards the discharging opening 211, the metal materials move to the discharging opening 211, the metal materials are placed on the surface of the material placing plate 340 to quench the metal in the quenching box 310, the second motor 320 and the second water pump 450 are turned on, the second water pump 450 pumps quenching oil in the oil tank 430 to flow into the quenching box 310 through the oil pipe 451, and the second motor 320 drives the stirring rod 331 of the rotating rod 330 to rotate and stir, the brushes 332 on the stirring rods 331 remove impurities from the bottom of the material placing plate 340, the quenching oil is pumped into the quenching box 310, so that the oil rises to drive the third electrode plate 354 of the floating ball 355 to rise upwards, the third electrode plate 354 is electrically conducted with the second electrode plate 353, the second warning lamp 362 of the warning assembly 360 flashes to give an alarm, the third electrode plate 354 is electrically conducted with the first electrode plate 352, the first warning lamp 361 of the warning assembly 360 flashes to send a danger signal to prompt a worker to take corresponding measures, the quenched oil is extracted through the U-shaped pipe 420 by turning on the first water pump 421, therefore, the quenching oil is filtered by the filtering component 422, the filtered oil is sucked into the oil tank 430 for storage and utilization, and by turning on the fan 440 of the oil tank 430, thereby secondarily cooling the quenching oil in the oil tank 430, and heating the metal components to be heated by turning on the fan 460, so that the fan 460 absorbs the residual heat in the quenching tank 310 into the housing 210 through the air pipe 461.

It should be noted that the specific model specifications of the first motor 220, the finger cylinder 250, the electromagnetic valve 3111, the second motor 320, the first water pump 421, the second water pump 450, and the fan 460 need to be determined according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply and the principle of the first motor 220, the finger cylinder 250, the solenoid valve 3111, the second motor 320, the first water pump 421, the second water pump 450 and the fan 460 are clear to those skilled in the art and will not be described in detail herein.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A vacuum oil quenching furnace with quenching cooling protection function is characterized by comprising

A guard (100), the guard (100) comprising a guard frame (110);

the feeding device (200) comprises a shell (210), a first motor (220), a feeding assembly (230), an expansion link (240), a finger cylinder (250), a graphite tube (260) and a storage rack (270), wherein the first motor (220) is fixedly installed on one side of the shell (210), the feeding assembly (230) is fixedly installed at the inner top of the shell (210), the expansion link (240) is fixedly installed on the feeding assembly (230), the finger cylinder (250) is fixedly installed at the extending end of the expansion link (240), the graphite tube (260) is fixedly installed on the inner wall of the shell (210), the storage rack (270) is fixedly installed on the shell (210), and the storage rack (270) and the graphite tube (260) are arranged in an aligned mode;

the quenching device (300), the quenching device (300) comprises a quenching box (310), a second motor (320), a rotating rod (330), a stirring rod (331), a material placing plate (340), a measuring component (350) and a warning component (360), the top of the quenching box (310) is communicated with the bottom of the shell (210), the second motor (320) is fixedly arranged at the bottom of the quenching box (310), the rotating rod (330) is connected with the output end key of the second motor (320), the rotating rod (330) is rotatably connected with the bottom of the quenching box (310), the stirring rod (331) is fixedly arranged on the rotating rod (330), the material placing plate (340) is arranged in the quenching box (310), the measuring assembly (350) is fixedly arranged on one side in the quenching box (310), the warning assembly (360) is fixedly arranged outside the quenching box (310) and is electrically connected with the measuring assembly (350);

the cooling device (400) comprises a water tank (410), a U-shaped pipe (420), a first water pump (421), an oil tank (430), a second water pump (450), an oil pipe (451), a fan (460) and an air pipe (461), wherein the U-shaped pipe (420) is installed in the water tank (410), the first water pump (421) is installed at one end of the U-shaped pipe (420), the oil tank (430) is communicated with the other end of the U-shaped pipe (420), the second water pump (450) is installed at the oil pipe (451), one end of the oil pipe (451) is communicated with the inside of the oil tank (430), the other end of the oil pipe (451) is communicated with the inside of the quenching box (310), the fan (460) is installed on the shell (210), the air pipe (461) is communicated with the fan (460), one end of the air pipe (461) is communicated with the inside of the quenching box (310), the other end of the air pipe (461) is communicated with the shell (210).

2. The vacuum oil quenching furnace with the quenching cooling protection function as claimed in claim 1, wherein the feeding assembly (230) comprises a threaded rod (231), a sliding rod (232), a sliding block (233) and a limiting block (234), the threaded rod (231) is rotatably mounted on the limiting block (234), the sliding rod (232) is fixedly mounted on the limiting block (234), the sliding block (233) is threadedly mounted on the threaded rod (231), the sliding block (233) is slidably mounted on the sliding rod (232), and the limiting block (234) is fixedly mounted on the shell (210).

3. The vacuum oil quenching furnace with the quenching cooling protection function as claimed in claim 1, wherein the housing (210) is provided with a feed opening (211), and the feed opening (211) is aligned with the top of the quenching box (310).

4. The vacuum oil quenching furnace with quenching cooling protection function as claimed in claim 1, wherein the graphite tubes (260) are provided in a plurality, and the graphite tubes (260) are arranged in an annular array in the shell (210).

5. The vacuum oil quenching furnace with quenching cooling protection function as claimed in claim 1, wherein the quenching box (310) is provided with a drain pipe (311), the drain pipe (311) is communicated with the bottom of the quenching box (310), the drain pipe (311) is provided with a solenoid valve (3111), and the solenoid valve (3111) is mounted on the drain pipe (311).

6. The vacuum oil quenching furnace with quenching cooling protection function as claimed in claim 1, wherein the stirring rod (331) is provided with a brush (332), and the brush (332) is attached to the bottom of the material placing plate (340).

7. The vacuum oil quenching furnace with the quenching cooling protection function as claimed in claim 1, wherein the measuring assembly (350) comprises a sleeve (351), a first electrode plate (352), a second electrode plate (353), a third electrode plate (354) and a floating ball (355), the sleeve (351) is fixedly installed on one side of the quenching box (310), the first electrode plate (352) is installed in the sleeve (351), the second electrode plate (353) is installed in the sleeve (351), the third electrode plate (354) is in sliding connection with the inner wall of the sleeve (351), and the floating ball (355) is fixedly connected with the third electrode plate (354).

8. The vacuum oil quenching furnace with quenching cooling protection function as claimed in claim 1, wherein said U-shaped pipe (420) is provided with a filter assembly (422), and said filter assembly (422) is mounted on said U-shaped pipe (420).

9. The vacuum oil quenching furnace with quenching cooling protection function as claimed in claim 1, wherein the oil tank (430) is provided with a fan (440), and the fan (440) is fixedly mounted on the top of the oil tank (430).

10. The vacuum oil quenching furnace with the quenching cooling protection function as claimed in claim 7, wherein the warning assembly (360) comprises a first warning lamp (361) and a second warning lamp (362), the first warning lamp (361) is electrically connected with the first electrode plate (352), and the second warning lamp (362) is electrically connected with the second electrode plate (353).