Heat treatment furnace opening and closing device and heat treatment furnace

Abstract

The utility model discloses a heat treatment furnace opening and closing device and a heat treatment furnace, and belongs to the technical field of heat treatment equipment. The heat treatment furnace opening and closing device comprises a rotating assembly, a driving motor, a locking ring and a driving air cylinder. Under the driving of the driving motor, the furnace door is driven by the rotating shaft to rotate between the opening position and the closing position in the horizontal direction, so that the furnace door can be opened and closed. Therefore, the furnace door does not need to be opened or closed manually, and operation is convenient, safe and convenient. Moreover, the driving air cylinder is used for driving the locking ring to rotate so as to lock or loosen the furnace door and the furnace body, the connection stability and the sealing performance of the furnace door and the furnace body can be improved, the risk of accidental operation can be reduced through a double-guarantee mechanism, and therefore the safety of the heat treatment furnace using the heat treatment furnace opening and closing device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat treatment equipment technical field especially relates to a heat treatment furnace opening and closing device and heat treatment furnace. BACKGROUND

[0002] The heat treatment furnace is a kind of equipment for heating, heat preservation and cooling to metal material, to realize the improvement of material performance or the transformation of specific organization structure.Vacuum sintering furnace refers to the heat treatment furnace for the protective sintering of heated goods in vacuum environment, for example, vacuum sintering furnace can be used for the sintering process of metal powder compacted body.

[0003] The heat treatment furnace usually includes furnace door, furnace body and rotating connecting mechanism, rotating connecting mechanism is movably connected with furnace door and furnace body respectively, so that furnace door can rotate relative to furnace body, to realize the opening and closing of furnace door.

[0004] At present, in the use process of heat treatment furnace, usually manual opening furnace door or closing furnace door for operator, but, since the temperature of heat treatment furnace is higher, possibly burns operator, leading to the lower safety of heat treatment furnace. UTILITY MODEL CONTENT

[0005] The utility model embodiment provides a kind of heat treatment furnace opening and closing device and heat treatment furnace.It can solve the lower safety problem of heat treatment furnace in prior art, and the technical solution is as follows:

[0006] According to an aspect of the utility model, a kind of heat treatment furnace opening and closing device is provided, for heat treatment furnace, the heat treatment furnace includes: furnace body, furnace door and mounting bracket, the heat treatment furnace opening and closing device includes: rotating assembly, drive motor, locking ring and drive cylinder;

[0007] The furnace door is located at one end of the furnace body, and the furnace body is fixed on the mounting bracket;

[0008] The rotating assembly is located at one side of the furnace body, and the rotating assembly includes a fixed seat and a rotating shaft, the fixed seat is fixedly connected with the furnace body, and the rotating shaft is rotatably installed on the fixed seat, and the rotating shaft is connected with the furnace door;

[0009] The drive motor is connected with the rotating shaft, and the drive motor is used to drive the rotating shaft to rotate, to drive the furnace door to open or close;

[0010] The locking ring is sleeved outside the end of the furnace door and the furnace body;

[0011] The driving cylinder is located outside the locking ring, and two ends of the driving cylinder are fixedly connected with the locking ring and the mounting support respectively, and the driving cylinder is used to drive the locking ring to rotate, so as to lock or unlock the furnace door and the furnace body.

[0012] Optionally, the furnace door position sensor is located on the side of the rotating shaft and is mounted on the fixed seat.

[0013] The furnace door position sensor is located on the side of the rotating shaft and is mounted on the fixed seat.

[0014] Optionally, the fixed seat comprises a support part and first and second lug seat parts arranged along the axial direction of the rotating shaft.

[0015] The support part is mounted on the outside of the furnace body, and the first and second lug seat parts are mounted on two ends of the support part respectively, and the first and second lug seat parts are rotatably connected with two ends of the rotating shaft respectively.

[0016] The furnace door position sensor is mounted on at least one of the first and second lug seat parts.

[0017] Optionally, the furnace door position sensor comprises at least one of a microswitch, a mechanical limit switch, a photoelectric sensor, a magnetic sensor and an inductive sensor.

[0018] Optionally, when the furnace door position sensor comprises a mechanical limit switch, the furnace door position sensor comprises first and second mechanical switches.

[0019] The first and second mechanical switches are located on two sides of the rotating shaft respectively, the first mechanical switch has a first trigger end, and the second mechanical switch has a second trigger end.

[0020] The side of the rotating shaft has a protruding structure, and when the rotating shaft rotates and drives the furnace door to open or close, the protruding structure contacts the first trigger end or the second trigger end.

[0021] Optionally, when the furnace door position sensor comprises a photoelectric sensor, the furnace door position sensor comprises first and second photoelectric sensors.

[0022] The first and second photoelectric sensors are located on two sides of the rotating shaft respectively, the first photoelectric sensor has a third trigger end, and the second photoelectric sensor has a fourth trigger end.

[0023] The side of the rotating shaft has a first light blocking plate, when the rotating shaft rotates and drives the oven door to open or close, the first light blocking plate is located in the third trigger end or the fourth trigger end.

[0024] Optionally, the heat treatment furnace further comprises a lock ring position sensor; the lock ring position sensor is located at one end of the furnace body close to the oven door and is installed on the furnace body, the lock ring position sensor is used for detecting the position of the rotation of the locking ring, and the lock ring position sensor is electrically connected with the driving cylinder;

[0025] The lock ring position sensor comprises a micro switch, a mechanical limit switch, a photoelectric sensor, a magnetic sensor or an inductive sensor.

[0026] Optionally, when the lock ring position sensor comprises a photoelectric sensor, the lock ring position sensor comprises a third photoelectric sensor and a fourth photoelectric sensor;

[0027] The third photoelectric sensor and the fourth photoelectric sensor are arranged along the circumference of the furnace body, the third photoelectric sensor has a fifth trigger end, and the fourth photoelectric sensor has a sixth trigger end.

[0028] The outer side of the locking ring has a second light blocking plate, when the locking ring rotates to lock or release the oven door and the furnace body, the second light blocking plate is located in the fifth trigger end or the sixth trigger end.

[0029] Optionally, one end of the furnace body close to the oven door has a first fixed ring, the edge of the oven door has a second fixed ring, and the inner side of the locking ring has an annular limiting groove.

[0030] Part of the first fixed ring and part of the second fixed ring are located in the annular limiting groove.

[0031] The second fixed ring has a plurality of first tooth-shaped protrusions, and adjacent two first tooth-shaped protrusions have a first gap; the groove wall away from the furnace body of the annular limiting groove has a plurality of second tooth-shaped protrusions, and adjacent two second tooth-shaped protrusions have a second gap; the shape of the first tooth-shaped protrusion matches the second gap, and the shape of the second tooth-shaped protrusion matches the first gap.

[0032] According to another aspect of the present application, a heat treatment furnace is provided, which comprises an oven door, a furnace body and a heat treatment furnace opening and closing device, the heat treatment furnace opening and closing device is connected with the oven door and the furnace body respectively, and the heat treatment furnace opening and closing device comprises the heat treatment furnace opening and closing device.

[0033] The technical scheme provided by the present application has at least the following beneficial effects:

[0034] The utility model provides a heat treatment furnace opening and closing device which comprises a rotating assembly, a driving motor, a locking ring and a driving cylinder. Under the driving of the driving motor, the furnace door is rotated along a horizontal direction between an open position and a closed position by a rotating shaft, so that the opening and closing of the furnace door can be realized. Thus, the furnace door does not need to be opened or closed manually, and the operation is convenient and safe and convenient. Moreover, the driving cylinder is used to drive the locking ring to rotate, so as to lock or release the furnace door and the furnace body, which can improve the connection stability and sealing performance of the furnace door and the furnace body, and reduce the risk of accidental operation through a double protection mechanism, thereby improving the safety of the heat treatment furnace using the heat treatment furnace opening and closing device. The safety of the heat treatment furnace in the related art can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 It is a structure schematic view of the heat treatment furnace provided by the embodiment of the utility model;

[0037] Figure 2 It is Figure 1 It is another view of the structure schematic view of the heat treatment furnace shown in the figure;

[0038] Figure 3 It is a structure schematic view of another heat treatment furnace opening and closing device provided by the embodiment of the utility model;

[0039] Figure 4 It is a mounting structure schematic view of a furnace door position sensor provided by the embodiment of the utility model;

[0040] Figure 5 It is a mounting structure schematic view of another furnace door position sensor provided by the embodiment of the utility model;

[0041] Figure 6 It is another view of the structure schematic view of the furnace door position sensor shown in the figure; Figure 5

[0042] Figure 7 It is a mounting structure schematic view of a locking ring position sensor provided by the embodiment of the utility model;

[0043] Figure 8 It is Figure 7 It is a partial cross-section structure schematic view of the heat treatment furnace along the A1-A2 position shown in the figure;​

[0044] Figure 9 It is an explosion structure schematic diagram of the locking ring, the furnace door and the furnace body provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings to make the embodiment of the utility model further detailed description.

[0046] Although the utility model can be easily manifested as different forms of embodiments, only some specific embodiments shown in the drawings and will be described in detail in the specification, and it can be understood that the specification should be regarded as the exemplary description of the principle of the utility model, and not intended to limit the utility model to that described herein.

[0047] Therefore, one feature indicated in the specification will be used to explain one feature of one embodiment of the utility model, and not imply that each embodiment of the utility model must have the explained feature. In addition, it should be noted that the specification describes many features. Although certain features can be combined together to show possible system design, these features can also be used in other combinations not explicitly described. Therefore, unless otherwise stated, the described combination is not intended to be limited.

[0048] In the embodiments shown in the drawings, the indication of direction (such as up, down, left, right, front and back) is used to explain the structure and movement of various elements of the utility model is not absolute but relative. When these elements are in the position shown in the drawings, these descriptions are appropriate. If the position of these elements changes, the direction of the indication also changes accordingly.

[0049] Please refer to Figure 1 And Figure 2 , Figure 1 It is a structure schematic diagram of the heat treatment furnace provided by the embodiment of the utility model, Figure 2 It is Figure 1 The structure schematic diagram of another view of the heat treatment furnace shown in the drawings, the heat treatment furnace can include: furnace body 20, furnace door 30 and mounting bracket 40, the heat treatment furnace can include vacuum sintering furnace, the heat treatment furnace opening and closing device 10 in the embodiment of the utility model can be used for heat treatment furnace, the heat treatment furnace opening and closing device 10 can include: rotating assembly 11, drive motor 12, locking ring 13 and drive cylinder 14.

[0050] Furnace door 30 is located at one end of furnace body 20, furnace body 20 is fixed on mounting bracket 40; furnace body 20 can be horizontal cylindrical structure, furnace body 20 can have opening, furnace door 30 is located at the opening of furnace body 20.

[0051] The rotating assembly 11 is located at one side of the furnace body 20, and can be connected with the furnace body 20 and the furnace door 30 respectively to drive the furnace door 30 to rotate relative to the furnace body 20, so as to realize the opening and closing of the furnace door 30. The rotating assembly 11 can include a fixed seat 112 and a rotating shaft 111, the fixed seat 112 is fixedly connected with the furnace body 20, and can be bolted or welded with the side surface of the furnace body 20. The length direction of the rotating shaft 111 can be vertical, and the rotating shaft 111 is rotatably installed on the fixed seat 112 and connected with the furnace door 30. The rotating assembly 11 can further include a connecting lug 113, both ends of the connecting lug 113 are provided with a hinge shaft and a shaft sleeve, the connecting lug 113 is rotatably connected with the furnace door 30 through the hinge shaft, and is sleeved outside the rotating shaft 111 through the shaft sleeve to be rotatably connected with the rotating shaft 111.

[0052] The driving motor 12 is connected with the rotating shaft 111, and is used to drive the rotating shaft 111 to rotate to drive the furnace door 30 to open or close. The heat treatment furnace opening and closing device 10 can further include a switch mechanism (not shown in the figure), which can be electrically connected with the driving motor 12 to control the opening or closing and the rotating direction of the driving motor 12. The switch mechanism can have multiple buttons, such as a furnace door 30 opening button, a furnace door 30 closing button, etc. The operator can control the driving motor 12 by pressing the buttons to drive the furnace door 30 to rotate along the horizontal direction between the opening position and the closing position under the driving of the driving motor 12, so as to realize the opening and closing operation of the furnace door 30. In this way, the furnace door 30 does not need to be manually opened or closed, and the operation is convenient and safe and convenient.

[0053] The locking ring 13 can be sleeved outside the end of the furnace door 30 and the furnace body 20; the driving cylinder 14 is located outside the locking ring 13, and both ends of the driving cylinder 14 are fixedly connected with the locking ring 13 and the mounting bracket 40, and the driving cylinder 14 is used to drive the locking ring 13 to rotate to lock or release the furnace door 30 and the furnace body 20. The locking ring 13 can be rotated between the first position and the second position under the driving of the driving cylinder 14, when the furnace door 30 is in the closing position, the locking ring 13 can be rotated to the first position to lock the furnace door 30 and the furnace body 20, which can improve the connection stability and sealing performance of the furnace door 30 and the furnace body 20; when the furnace door 30 needs to be opened, the locking ring 13 can be rotated to the second position, in which position the locking ring 13 does not limit the rotation of the furnace door 30.

[0054] The switch mechanism can also be electrically connected with the driving cylinder 14 to control the extension or retraction of the driving cylinder 14, thereby controlling the rotating direction of the locking ring 13. The switch mechanism can have multiple buttons, such as a locking ring on button, a locking ring off button, and the like. An operator can control the driving cylinder 14 by pressing the buttons, so that the locking ring 13 is rotated along the circumference of the door 30 under the driving of the driving cylinder 14, thereby realizing the opening and closing operations of the locking ring 13. In this way, the locking ring 13 does not need to be manually driven to open or close, and the operation is convenient and safe and convenient.

[0055] In addition, during the opening or closing of the door 30, the operator can first click the locking ring on button, and then click the door on button to open the door 30 after the locking ring is opened. In this way, the safety of the heat treatment furnace opening and closing device 10 can be enhanced, and the risk of accidental operation can be reduced through a double protection mechanism. Specifically, the rotating assembly 11 and the driving motor 12 are used to drive the door 30 to open or close, and the locking ring 13 and the driving cylinder 14 play a protective role, that is, in the case of failure of the rotating assembly 11 or the driving motor 12, or operation error, the heat treatment furnace opening and closing device 10 can still maintain a locked state, thereby avoiding potential dangers.

[0056] In summary, the embodiments of the utility model provide a heat treatment furnace opening and closing device 10 including a rotating assembly 11, a driving motor 12, a locking ring 13 and a driving cylinder 14. Under the driving of the driving motor 12, the door 30 is rotated along the horizontal direction between the opening position and the closing position by the rotating shaft 111, thereby realizing the opening and closing operations of the door 30. In this way, the door 30 does not need to be manually opened or closed, and the operation is convenient and safe and convenient. In addition, the driving cylinder 14 is used to drive the locking ring 13 to rotate, so as to lock or unlock the door 30 and the furnace body 20, which can improve the connection stability and sealing performance of the door 30 and the furnace body 20, and also reduce the risk of accidental operation through a double protection mechanism, thereby improving the safety of the heat treatment furnace using the heat treatment furnace opening and closing device 10. The problem of low safety of the heat treatment furnace in the related art can be solved.

[0057] Please refer to Figure 3 , Figure 3is a structure schematic view of another heat treatment furnace opening and closing device 10 provided by the embodiment of the utility model, in an alternative implementation, the heat treatment furnace opening and closing device 10 can also include furnace door position sensor 15. Furnace door position sensor 15 is located at the side of rotating shaft 111 and is installed on fixed seat 112, furnace door position sensor 15 is used to detect the position of rotating shaft 111 driven furnace door 30 rotation, furnace door position sensor 15 is electrically connected with drive motor 12. Under the drive of drive motor 12, furnace door 30 can move between third position and fourth position, wherein, third position is the position that furnace door 30 is completely opened, fourth position is the position that furnace door 30 is completely closed, when furnace door position sensor 15 detects that furnace door 30 rotates to third position or fourth position, can send the closing signal to drive motor 12, the closing signal can be low level or high level, to close drive motor 12.

[0058] Please refer to Figure 3 , in an alternative implementation, fixed seat 112 can include support part 1121 and first lug seat part 1122 and second lug seat part 1123 arranged along the axial direction of rotating shaft 111. Support part 1121 is installed on the outside of furnace body 20, first lug seat part 1122 and second lug seat part 1123 are fixedly installed at both ends of support part 1121 respectively, first lug seat part 1122 and second lug seat part 1123 are rotatably connected with both ends of rotating shaft 111 respectively, furnace door position sensor 15 is installed on at least one of first lug seat part 1122 and second lug seat part 1123. Furnace door position sensor 15 can be fixedly installed on first lug seat part 1122 or second lug seat part 1123 by bolt connection, bonding or clamping. First lug seat part 1122 and second lug seat part 1123 can be fixedly installed at both ends of support part 1121 by bolt connection, bonding or clamping.

[0059] Optionally, furnace door position sensor 15 includes at least one of microswitch, mechanical limit switch, photoelectric sensor, magnetic sensor and inductive sensor. That is, the rotating position of rotating shaft 111 can be detected by one or more sensors, so that the opening and closing positions of furnace door 30 are accurately obtained. When furnace door position sensor 15 includes one sensor of microswitch, mechanical limit switch, photoelectric sensor, magnetic sensor and inductive sensor, furnace door position sensor 15 can be installed on first lug seat part 1122 or second lug seat part 1123, when furnace door position sensor 15 includes two sensors of microswitch, mechanical limit switch, photoelectric sensor, magnetic sensor and inductive sensor, the two sensors can be installed on first lug seat part 1122 and second lug seat part 1123 respectively.

[0060] Please refer to Figure 4 , Figure 4It is the mounting structure schematic view of the oven door position sensor 15 provided by the utility model embodiment, in Figure 4 The oven door position sensor 15 can include a first mechanical switch 151 and a second mechanical switch 152 in an alternative embodiment when the oven door position sensor 15 includes a mechanical limit switch. The first mechanical switch 151 and the second mechanical switch 152 are respectively located on the two sides of the rotating shaft 111. The first mechanical switch 151 has a first trigger end s1, and the second mechanical switch 152 has a second trigger end s2. The side surface of the rotating shaft 111 has a protruding structure t1. When the rotating shaft 111 rotates and drives the oven door 30 to open or close, the protruding structure t1 contacts the first trigger end s1 of the first mechanical switch 151 or the first trigger end s1 of the second mechanical switch 152 to trigger the first mechanical switch 151 or the second mechanical switch 152 to send a signal to the driving motor 12.

[0061] Please refer to Figure 5 and Figure 6 , Figure 5 It is another mounting structure schematic view of the oven door position sensor 15 provided by the utility model embodiment, Figure 6 It is Figure 5 another perspective view of the structure schematic view of the oven door position sensor 15, in Figure 5 and Figure 6 The oven door position sensor 15 includes a first photoelectric sensor 153 and a second photoelectric sensor 154 in an alternative embodiment when the oven door position sensor 15 includes a photoelectric sensor. The first photoelectric sensor 153 and the second photoelectric sensor 154 are respectively located on the two sides of the rotating shaft 111. The first photoelectric sensor 153 has a third trigger end s3, and the second photoelectric sensor 154 has a fourth trigger end s4. The side surface of the rotating shaft 111 has a first light barrier b1. When the rotating shaft 111 rotates and drives the oven door 30 to open or close, the first light barrier b1 is located in the third trigger end s1 of the first photoelectric sensor 153 or the fourth trigger end s4 of the second photoelectric sensor 154 to trigger the first photoelectric sensor 153 or the second photoelectric sensor 154 to send a signal to the driving motor 12. The photoelectric sensor in the utility model embodiment can include a through-beam photoelectric sensor or a reflective photoelectric sensor.

[0062] Please refer to Figure 1 and Figure 7 , Figure 7 It is the mounting structure schematic view of the lock ring position sensor 16 provided by the utility model embodiment, Figure 7As shown in Fig. 1, the heat treatment furnace 1 comprises a furnace door 20, a furnace body 30, a locking ring 13, a driving motor 12, a driving cylinder 14, a locking ring position sensor 16, and a controller. The furnace door 20 is connected to the furnace body 30. The locking ring 13 is arranged on the furnace body 30 and is used to lock or unlock the furnace door 20. The driving motor 12 is arranged on the furnace body 30 and is used to drive the locking ring 13 to rotate. The driving cylinder 14 is arranged on the furnace body 30 and is used to drive the furnace door 20 to open or close. The locking ring position sensor 16 is arranged on the furnace body 30 and is used to detect the position of the locking ring 13. The controller is electrically connected to the driving motor 12, the driving cylinder 14, and the locking ring position sensor 16.

[0063] The locking ring position sensor 16 can be fixedly arranged on the side of the furnace body 20 by means of screw connection, adhesion, or clamping. When the locking ring position sensor 16 detects that the locking ring 13 rotates to the first position or the second position, a closing signal can be sent to the driving cylinder 14, which can be a low level or a high level, so as to close the driving cylinder 14.

[0064] Please refer to Figure 1 and Figure 7 Optionally, when the locking ring position sensor 16 comprises a photoelectric sensor, the locking ring position sensor 16 comprises a third photoelectric sensor 161 and a fourth photoelectric sensor 162. The third photoelectric sensor 161 and the fourth photoelectric sensor 162 are arranged along the circumference of the furnace body 20. In the embodiment of the present application, the furnace body can be in a cylindrical shape. The third photoelectric sensor 161 has a fifth trigger end s5, and the fourth photoelectric sensor 162 has a sixth trigger end s6. The locking ring 13 has a second light blocking plate b2 on the outer side. When the locking ring 13 rotates to lock or unlock the furnace door 30 and the furnace body 20, the second light blocking plate b2 is located in the fifth trigger end s5 of the third photoelectric sensor 161 or the sixth trigger end s6 of the fourth photoelectric sensor 162, so as to trigger the third photoelectric sensor 161 or the fourth photoelectric sensor 162 to send a signal to the driving cylinder 14.

[0065] It can be understood that the heat treatment furnace opening and closing device 11 in the embodiment of the present application can further comprise a controller. The controller can be electrically connected to the driving motor 12, the driving cylinder 14, and the plurality of position sensors respectively, so as to control the driving motor 12 and the driving cylinder 14 according to the signals detected by the plurality of position sensors.

[0066] Please refer to Figure 7 , Figure 8 and Figure 9 , Figure 8 is Figure 7 a partial cross-sectional structure schematic view of the heat treatment furnace along A1-A2 position, Figure 9is an explosion structure schematic view of the locking ring 13, the furnace door 30 and the furnace body 20, in an alternative embodiment, the furnace body 20 has a first fixed ring 21 at one end close to the furnace door 30, the edge of the furnace door 30 has a second fixed ring 22, and the inner side of the locking ring 13 has an annular limiting groove c1. Part of the first fixed ring 21 and part of the second fixed ring 22 are located in the annular limiting groove c1. Among them, the second fixed ring 22 has a plurality of first toothed protrusions t2, and adjacent two first toothed protrusions t2 have a first gap x1; the groove wall on the side away from the furnace body 20 of the annular limiting groove c1 has a plurality of second toothed protrusions t3, and adjacent two second toothed protrusions t3 have a second gap x2; the shape of the first toothed protrusion t2 matches the second gap x2, and the shape of the second toothed protrusion t3 matches the first gap x1.

[0067] When the locking ring 13 is in the first position (that is, the locked position), the first toothed protrusion t2 and the second toothed protrusion t3 at least partially overlap, and when the locking ring 13 is in the second position (that is, the unlocked position), the first toothed protrusion t2 and the second toothed protrusion t3 are staggered.

[0068] Please refer to Figure 1 The heat treatment furnace in the embodiment of the utility model includes: furnace door 30, furnace body 20 and heat treatment furnace opening and closing device 10, heat treatment furnace opening and closing device 10 is connected with furnace door 30 and furnace body 20 respectively, and heat treatment furnace opening and closing device 10 includes heat treatment furnace opening and closing device 10 in any one of the above embodiments.

[0069] It should be noted that in the drawings, the size of the region can be exaggerated for clarity. Also, it is understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it is understood that when an element is referred to as being "between" two elements, it can be the only element between the two elements or one or more intervening elements can also be present. Like reference numerals refer to like elements throughout the specification.

[0070] In the utility model, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0071] The above description is only optional embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A heat treatment furnace opening and closing device characterized by comprising: The application discloses a heat treatment furnace opening and closing device, which comprises a furnace body, a furnace door and a mounting bracket. The furnace door is located at one end of the furnace body, and the furnace body is fixed on the mounting bracket. The rotating assembly is located at one side of the furnace body, and comprises a fixed seat and a rotating shaft. The fixed seat is fixedly connected with the furnace body, and the rotating shaft is rotatably installed on the fixed seat and connected with the furnace door. The driving motor is connected with the rotating shaft and used for driving the rotating shaft to rotate so as to drive the furnace door to open or close. The locking ring is sleeved outside the end of the furnace door and the furnace body.

2. The heat treatment furnace opening and closing device according to claim 1, characterized by The driving cylinder is located outside the locking ring, and two ends of the driving cylinder are fixedly connected with the locking ring and the mounting bracket respectively. The driving cylinder is used for driving the locking ring to rotate so as to lock or release the furnace door and the furnace body.

3. The heat treatment furnace opening and closing device according to claim 1, characterized by The heat treatment furnace opening and closing device further comprises a furnace door position sensor. The furnace door position sensor is located at the side of the rotating shaft and installed on the fixed seat. The furnace door position sensor is used for detecting the position of the rotating shaft driving the furnace door to rotate, and is electrically connected with the driving motor.

4. The heat treatment furnace opening and closing device according to claim 1, wherein The fixed seat comprises a bracket part and first and second ear seat parts arranged along the axial direction of the rotating shaft.

5. The heat treatment furnace opening and closing device according to claim 4, wherein The bracket part is installed outside the furnace body, and the first and second ear seat parts are installed at two ends of the bracket part respectively. The first and second ear seat parts are rotatably connected with two ends of the rotating shaft respectively. The furnace door position sensor is installed on at least one of the first and second ear seat parts.

6. The heat treatment furnace opening and closing device according to claim 4, wherein The furnace door position sensor comprises at least one of a microswitch, a mechanical limit switch, a photoelectric sensor, a magnetic sensor and an inductive sensor. When the furnace door position sensor comprises the mechanical limit switch, the furnace door position sensor comprises first and second mechanical switches. The first and second mechanical switches are located at two sides of the rotating shaft respectively. The first mechanical switch has a first trigger end, and the second mechanical switch has a second trigger end. The side of the rotating shaft has a convex structure, which is in contact with the first trigger end or the second trigger end when the rotating shaft rotates and drives the furnace door to open or close. When the furnace door position sensor comprises the photoelectric sensor, the furnace door position sensor comprises first and second photoelectric sensors. The first and second photoelectric sensors are located at two sides of the rotating shaft respectively. The first photoelectric sensor has a third trigger end, and the second photoelectric sensor has a fourth trigger end. The side of the rotating shaft has a first light barrier, which is located in the third trigger end or the fourth trigger end when the rotating shaft rotates and drives the furnace door to open or close.

7. The heat-treatment furnace opening and closing device according to claim 1, wherein The heat treatment furnace further comprises a lock ring position sensor; the lock ring position sensor is located at one end of the furnace body close to the furnace door and is installed on the furnace body, the lock ring position sensor is used for detecting the position of the rotation of the locking ring, and the lock ring position sensor is electrically connected with the driving cylinder; The lock ring position sensor comprises a micro switch, a mechanical limit switch, a photoelectric sensor, a magnetic sensor or an inductive sensor.

8. The heat treatment furnace opening and closing device according to claim 7, characterized by When the lock ring position sensor comprises the photoelectric sensor, the lock ring position sensor comprises a third photoelectric sensor and a fourth photoelectric sensor; The third photoelectric sensor and the fourth photoelectric sensor are arranged in the circumferential direction of the furnace body, the third photoelectric sensor has a fifth trigger end, and the fourth photoelectric sensor has a sixth trigger end; The outer side of the locking ring has a second light barrier, when the locking ring rotates to lock or unlock the furnace door and the furnace body, the second light barrier is located in the fifth trigger end or the sixth trigger end.

9. The heat-treatment furnace opening and closing device according to claim 8, characterized in that, One end of the furnace body close to the furnace door has a first fixed ring, the edge of the furnace door has a second fixed ring, and the inner side of the locking ring has an annular limiting groove; Part of the first fixed ring and part of the second fixed ring are located in the annular limiting groove; The second fixed ring has a plurality of first tooth-shaped protrusions, and adjacent two first tooth-shaped protrusions have a first gap; the groove wall of the annular limiting groove away from the furnace body has a plurality of second tooth-shaped protrusions, and adjacent two second tooth-shaped protrusions have a second gap; the shape of the first tooth-shaped protrusion matches the second gap, and the shape of the second tooth-shaped protrusion matches the first gap.

10. A heat treatment furnace characterized by comprising: Comprise: A furnace door, a furnace body and a heat treatment furnace opening and closing device, the heat treatment furnace opening and closing device is connected with the furnace door and the furnace body respectively, and the heat treatment furnace opening and closing device comprises the heat treatment furnace opening and closing device in any one of claims 1 to 9.

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