A heating furnace rear point inspection port sealing door lifting device

Abstract

The application provides a sealing door lifting device for a post-inspection opening of a heating furnace, and relates to the technical field of heat treatment furnaces.The sealing door lifting device for the post-inspection opening of the heating furnace comprises a fixed frame, a lifting frame, an inspection door and a lifting driving element.The fixed frame is used for being fixed to the end of a furnace body.The lifting frame is movably arranged on the fixed frame.The lifting driving element is arranged on the lifting frame and is in transmission connection with the inspection door.The lifting frame can linearly reciprocate along the opening direction of the inspection opening relative to the fixed frame to drive the inspection door to close or open the inspection opening.The lifting frame and the lifting driving element are arranged to achieve good bearing and lifting effects of the inspection door in the vertical direction, which facilitates the forward and backward movement of the lifting frame driven by manpower, thereby facilitating the disassembly of the inspection door.The lifting driving element is used to lift the inspection door, which can smoothly expose the inspection opening and facilitate the debugging and maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat treatment furnace, in particular to a sealing door lifting device for a rear inspection port of a heating furnace. BACKGROUND

[0002] It is known that a rear inspection port must be left in a heating furnace of a mesh belt furnace production line. The purpose of setting the inspection port is to facilitate personnel access during furnace building and machine loading, and to facilitate maintenance of internal components of the furnace through the rear inspection port without disassembling the upper cover during later maintenance. In addition, the rear inspection port can be used to observe the crossing state of the lower oil curtain during on-site commissioning. Since the rear inspection port door contains heat-resistant insulation materials, it is heavy, usually more than 150Kg, and is connected by bolts after being sealed and attached by a method such as Figure 1 .

[0003] However, this solution results in heavy components of the inspection door, which is inconvenient for commissioning and disassembly, and requires multiple people to disassemble during subsequent maintenance. In the absence of a travelling crane on site, the door cannot be disassembled. SUMMARY

[0004] The purpose of the present application includes, for example, providing a sealing door lifting device for a rear inspection port of a heating furnace, which is convenient for commissioning and disassembly, and facilitates maintenance.

[0005] Embodiments of the present application can be implemented as follows:

[0006] In a first aspect, the present application provides a sealing door lifting device for a rear inspection port of a heating furnace, which is arranged at one end of a furnace body having an inspection port, comprising:

[0007] a fixed frame;

[0008] a lifting frame movably arranged on the fixed frame;

[0009] a rear inspection door movably arranged at the bottom of the lifting frame;

[0010] and a lifting drive arranged on the lifting frame and in driving connection with the rear inspection door.

[0011] Wherein, the lifting frame is capable of linear reciprocating motion along the opening direction of the inspection port relative to the fixed frame, so as to drive the rear inspection door to close or open the inspection port.

[0012] In an optional embodiment, the fixed frame is provided with driving guide rails on both sides of the top side, the lifting frame is arranged in the fixed frame, and the lifting frame is provided with driving rollers on both sides of the top side, the driving rollers are accommodated in the driving guide rails and are capable of rolling along the driving guide rails to drive the lifting frame to move.

[0013] In an optional embodiment, the fixed frame comprises a roller limiting rod, two bearing supports and two guide rail supports, the ends of the two guide rail supports are arranged at the top ends of the two bearing supports, the two ends of the roller limiting rod are respectively connected with the ends of the two guide rail supports away from the bearing supports, and the two guide rail supports are each provided with the driving guide rail.

[0014] In an optional embodiment, the top sides of the lifting frame are further provided with at least two bearing rollers, the bearing rollers are arranged in a staggered manner with the driving rollers and roll against the top sides of the guide rail supports.

[0015] In an optional embodiment, the lifting frame comprises a mounting seat, mounting columns arranged on both sides of the mounting seat and a mounting plate arranged at the top ends of the mounting columns, the bearing rollers and the driving rollers are arranged on the mounting plate, the lifting drive is arranged on the mounting seat, and the two sides of the point inspection door are movably connected with the mounting columns and are used to move up and down along the mounting columns under the driving of the lifting drive.

[0016] In an optional embodiment, the mounting columns are provided with lifting guide rails, the two sides of the point inspection door are provided with lifting rollers, the lifting rollers are accommodated in the lifting guide rails and can roll along the lifting guide rails.

[0017] In an optional embodiment, the lifting drive comprises a cylinder and a piston rod, the cylinder is fixed on the mounting seat, the piston rod is accommodated in the cylinder and extends downward, the top of the point inspection door is provided with a floating joint, and the end of the piston rod is connected with the floating joint.

[0018] In an optional embodiment, the outer side of the point inspection door is further provided with an outwardly protruding handle frame.

[0019] In an optional embodiment, the mounting columns are further provided with a safety jack, and a safety pin shaft is assembled in the safety jack, the safety pin shaft is used to be inserted into the handle frame after the point inspection door moves upward to a preset position, so as to safely limit the point inspection door.

[0020] In an optional embodiment, the four corners of the point inspection door are provided with pressing plates.

[0021] The beneficial effects of the embodiments of the present application include, for example:

[0022] The heating furnace rear point inspection port sealing door lifting device provided by the application has the lifting frame movably arranged on the fixed frame, the point inspection door movably arranged at the bottom of the lifting frame, the lifting driving element arranged on the lifting frame, and the lifting frame capable of linear reciprocating relative to the fixed frame to drive the point inspection door to open or close the point inspection port. The lifting frame and the lifting driving element can realize good bearing effect and lifting effect on the point inspection door in the vertical direction, facilitate the lifting frame to move forward and backward by manpower, facilitate the point inspection door to be disassembled, and facilitate the point inspection door to be lifted by the lifting driving element to smoothly expose the point inspection port, facilitating debugging and maintenance. Compared with the prior art, the heating furnace rear point inspection port sealing door lifting device and the heating furnace provided by the application are very convenient to debug and disassemble, and are convenient for maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Figure 1 The assembly structure diagram of the point inspection door in the prior art;

[0025] Figure 2 The structure schematic diagram of the heating furnace rear point inspection port sealing door lifting device provided by the embodiment of the application in the first perspective view;

[0026] Figure 3 The structure schematic diagram of the heating furnace provided by the embodiment of the application;

[0027] Figure 4 The structure schematic diagram of the heating furnace rear point inspection port sealing door lifting device in the embodiment of the application; Figure 3

[0028] The partial enlarged schematic diagram of the heating furnace rear point inspection port sealing door lifting device in the embodiment of the application; Figure 5 Figure 4 The structure schematic diagram of the heating furnace rear point inspection port sealing door lifting device provided by the embodiment of the application in the second perspective view.

[0029] Figure 6

[0030] ​​Icon: 100 - sealing door lifting device of post-inspection port of heating furnace; 110 - fixed frame; 111 - roller limiting rod; 113 - bearing bracket; 115 - guide rail bracket; 117 - reinforcing inclined rod; 120 - lifting frame; 121 - mounting seat; 123 - mounting column; 125 - mounting plate; 130 - inspection door; 131 - floating joint; 133 - handle frame; 140 - lifting driving part; 141 - air cylinder; 143 - piston rod; 150 - driving guide rail; 151 - driving roller; 153 - bearing roller; 170 - lifting guide rail; 171 - lifting roller; 190 - safety jack; 200 - heating furnace; 210 - furnace body; 230 - inspection port. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0033] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0037] First embodiment

[0038] Reference is made to Figures 2 to 6 The embodiment provides a sealing door lifting device 100 for a back inspection port of a heating furnace, which is suitable for a heating furnace 200. The device can simplify the maintenance operation of the inspection port 230, and is convenient for the debugging and disassembly of the inspection port 230 of the heating furnace 200, and can be manually completed by one person without the need for multiple people to operate.

[0039] The sealing door lifting device 100 for the back inspection port of the heating furnace provided by the embodiment is arranged at one end of a furnace body 210 with an inspection port 230. The sealing door lifting device 100 for the back inspection port of the heating furnace comprises a fixed rack 110, a lifting rack 120, an inspection door 130 and a lifting driving part 140. The fixed rack 110 is arranged at the end of the furnace body 210. The lifting rack 120 is movably arranged on the fixed rack 110. The lifting driving part 140 is arranged on the lifting rack 120 and is in transmission connection with the inspection door 130. The lifting rack 120 can move linearly along the opening direction of the inspection port 230 relative to the fixed rack 110, so as to drive the inspection door 130 to close or open the inspection port 230.

[0040] During the actual debugging or maintenance of the inspection port 230, the inspection door 130 is always under the stretching action of the lifting rack 120, and good bearing effect and lifting effect are realized on the inspection door 130 in the vertical direction. The lifting rack can be conveniently moved forward and backward by manpower, so that the inspection door 130 can be conveniently disassembled. The inspection door 130 can be lifted by the lifting driving part 140, so that the inspection port 230 can be smoothly exposed, and the debugging and maintenance can be conveniently performed.

[0041] In the embodiment, the fixed rack 110 is provided with driving guide rails 150 on the top sides. The lifting rack 120 is arranged in the fixed rack 110, and the lifting rack 120 is provided with driving rollers 151 on the top sides. The driving rollers 151 are arranged in the driving guide rails 150 and can roll along the driving guide rails 150, so as to drive the lifting rack 120 to move. Specifically, the driving guide rails 150 are two, and the two driving guide rails 150 are arranged in parallel and are spaced apart, and are arranged in the front-rear direction, so that the lifting rack 120 can be moved forward and backward under the driving of the driving rollers 151, and the inspection door 130 can be opened or closed. At the same time, the rolling arrangement also makes the friction small, and it is convenient for one person to pull the inspection door 130 by hand.

[0042] It should be noted that the point inspection door 130 is used to block the point inspection port 230 in the embodiment, and is fixed on the point inspection port 230 through a flange bolt or the like. When the point inspection door 130 needs to be removed, the fixing member on the point inspection door 130 can be removed first, so that the point inspection door 130 is not limited between the point inspection door 130 and the point inspection port 230, and then the point inspection door 130 is pulled outwards by hand. Since the point inspection door 130 is stretched in the vertical direction by the lifting frame 120, the thickness of the point inspection door 130 does not need to be borne by hand, and the driving guide rail 150 is arranged in the front-rear direction, so that the point inspection door 130 can be easily pulled outwards to open the point inspection port 230.

[0043] In the embodiment, the fixed frame 110 includes a roller limiting rod 111, two bearing supports 113, and two guide rail supports 115. The ends of the two guide rail supports 115 are arranged at the top ends of the two bearing supports 113. The two ends of the roller limiting rod 111 are respectively connected to the ends of the two guide rail supports 115 away from the bearing supports 113. The driving guide rail 150 is arranged on each of the two guide rail supports 115. Specifically, the bearing support 113 can be fixedly arranged at the end of the furnace body 210. The two guide rail supports 115 are connected to the top ends of the two bearing supports 113 and extend outward. The roller limiting rod 111 is arranged horizontally and connected to the ends of the two guide rail supports 115, so that the roller limiting rod 111 is located at the end of the driving guide rail 150, limiting the driving roller 151, ensuring that the point inspection door 130 moves a certain distance after opening the point inspection port 230, and avoiding the driving roller 151 from being pulled out of the driving guide rail 150.

[0044] In the embodiment, the reinforcing inclined rod 117 is arranged obliquely between the bearing support 113 and the guide rail support 115. The reinforcing inclined rod 117, the bearing support 113, and the guide rail support 115 form a triangular structure, thereby stably supporting the guide rail support 115 to improve the structural strength.

[0045] It should be noted that the guide rail support 115 can be a channel steel structure, that is, a conventional profile steel, thereby forming the driving guide rail 150 on the inner side. The driving guide rail 150 has an upper side edge and a lower side edge. The driving roller 151 is arranged in the lower side edge and spaced apart from the upper side edge. The spacing is preferably 1 mm, which can smoothly communicate and effectively prevent warping and limiting. Of course, in other preferred embodiments of the application, the guide rail support 115 can additionally be provided with a track to limit the driving roller 151.

[0046] In the embodiment, at least two bearing rollers 153 are arranged on the top of the lifting frame 120, and the bearing rollers 153 are arranged in a staggered manner with the driving rollers 151 and are rolled against the top side of the guide rail support 115. Specifically, two bearing rollers 153 are arranged on the top of the lifting frame 120 respectively, and the two bearing rollers 153 are arranged in a triangular distribution with the driving rollers 151, wherein the two bearing rollers 153 can directly abut against the top side surface of the guide rail support 115, thereby being capable of playing a bearing role and ensuring the balance of the point inspection door 130 and the lifting frame 120. Moreover, the driving rollers 151 are arranged inside the driving guide rail 150, thereby being capable of effectively realizing the limiting and anti-warping functions and ensuring the balance of the overall structure.

[0047] Of course, in other preferable embodiments of the present application, the bearing rollers 153 and the driving rollers 151 can also be multiple, and the distribution manner can also be various, which is not specifically limited herein.

[0048] In the embodiment, the lifting frame 120 comprises a mounting seat 121, mounting columns 123 arranged on both sides of the mounting seat 121, and mounting plates 125 arranged on the top ends of the mounting columns 123, the bearing rollers 153 and the driving rollers 151 are arranged on the mounting plates 125, the lifting driving member 140 is arranged on the mounting seat 121, and the two sides of the point inspection door 130 are movably connected with the mounting columns 123 and are used to move up and down along the mounting columns 123 under the driving of the lifting driving member 140. Specifically, the mounting plates 125 are two, the two mounting plates 125 are arranged on both sides of the mounting seat 121, and the driving rollers 151 and the bearing rollers 153 on the same side are arranged on the same mounting plate 125, thereby being capable of further realizing the anti-warping function.

[0049] In the embodiment, the mounting columns 123 are provided with lifting guide rails 170, and the two sides of the point inspection door 130 are provided with lifting rollers 171, the lifting rollers 171 are accommodated in the lifting guide rails 170 and are capable of rolling along the lifting guide rails 170. Specifically, the mounting columns 123 can also adopt a channel steel structure and are formed with vertical lifting guide rails 170 on the inner sides, and the lifting rollers 171 are rolling accommodated in the lifting guide rails 170, thereby being capable of rolling along the lifting guide rails 170 when the point inspection door 130 is moved up and down under the driving of the lifting driving member 140, realizing the limiting role on both sides and preventing the point inspection door 130 from rotating and overturning, thereby ensuring that the point inspection door 130 can be parallel to the flange structure at the point inspection opening 230.

[0050] It should be noted that the lifting rollers 171, the driving rollers 151 and the bearing rollers 153 in the embodiment are all 45# steel and are subjected to quenching treatment, thereby increasing the hardness and prolonging the service life.

[0051] In the embodiment, the lifting driving member 140 comprises a cylinder 141 and a piston rod 143, the cylinder 141 is fixed on the mounting base 121, the piston rod 143 is accommodated in the cylinder 141 and extends downward, the top of the inspection door 130 is provided with a floating joint 131, and the end of the piston rod 143 is connected with the floating joint 131. Specifically, the cylinder 141 can adopt a pipeline for gas transmission, preferably a hose, facilitating the up-down and front-back movement of the door. A manual four-way valve can be arranged on the pipeline, the cylinder 141 is controlled to act by directly twisting the manual four-way valve, and the piston rod 143 is controlled to move up and down, and a speed control valve can also be arranged on the pipeline, so as to control the speed of the cylinder 141. In addition, the piston rod 143 is connected with the top end of the inspection door 130 through the floating joint 131, and the floating joint 131 has the characteristics of a universal joint, which can ensure that the inspection door 130, the roller and the guide rail can still move smoothly up and down in the case of manufacturing and installation errors.

[0052] Of course, in other preferred embodiments of the application, the lifting driving member 140 can also adopt an oil cylinder or an electric push rod and other driving members, and the specific type is not limited here.

[0053] In the embodiment, the outer side of the inspection door 130 is also provided with outwardly protruding handle frames 133. Specifically, the handle frames 133 are two, the two handle frames 133 are arranged at intervals, and the handle frames 133 are U-shaped structures, and both ends are fixedly connected to the outer side of the inspection door 130, so as to form a frame-shaped hand holding structure, facilitating the hand to pull the inspection door 130.

[0054] In the embodiment, the mounting column 123 is also provided with a safety jack 190, and a safety pin shaft is assembled in the safety jack 190. The safety pin shaft is used to be inserted into the handle frame 133 after the inspection door 130 moves upward to the preset position, so as to safely limit the inspection door 130. Specifically, when the inspection door 130 moves to the upper limit position, the inspection opening 230 can be completely exposed, facilitating the maintenance action through the inspection opening 230. At this time, the inspection door 130 is usually supported by the cylinder 141. In order to avoid the dangerous situation caused by the failure of the cylinder 141, the safety pin shaft is additionally arranged in the embodiment, and can be inserted into the handle frame 133 after the inspection door 130 is lifted in place, so as to realize the limiting in the vertical direction, avoiding the falling of the inspection door 130.

[0055] In the embodiment, the four corners of the inspection door 130 are provided with pressing plates, and the pressing plates are fixed through bolts, so as to ensure the sealing property of the inspection door 130.

[0056] To sum up, the heating furnace rear point inspection port sealing door lifting device 100 provided in the embodiment has the lifting frame 120 movably arranged on the fixed frame 110, the point inspection door 130 movably arranged at the bottom of the lifting frame 120, the lifting driving member 140 arranged on the lifting frame 120, and the lifting frame 120 capable of moving linearly relative to the fixed frame 110 to drive the point inspection door 130 to open or close the point inspection port 230. Due to the arrangement of the lifting frame 120 and the lifting driving member 140, the point inspection door 130 can be well supported and lifted in the vertical direction, and the lifting frame can be conveniently moved forward and backward by manpower, so that the point inspection door 130 can be conveniently disassembled. The point inspection door 130 can be conveniently lifted by the lifting driving member 140, so that the point inspection port 230 can be smoothly exposed for convenient debugging and maintenance. Compared with the prior art, the heating furnace rear point inspection port sealing door lifting device 100 and the heating furnace 200 provided in the embodiment are very convenient to debug and disassemble, convenient to maintain, high in safety, and convenient to operate.

[0057] Second embodiment

[0058] Reference Figure 3 , the heating furnace 200 provided in the embodiment comprises a furnace body 210 and a heating furnace rear point inspection port sealing door lifting device 100. The basic structure and principle of the lifting point inspection port 230 sealing device and the technical effects generated are the same as those of the first embodiment. For brief description, the part not mentioned in the embodiment can be referred to the corresponding content in the first embodiment.

[0059] The heating furnace 200 provided in the embodiment comprises a furnace body 210 and a heating furnace rear point inspection port sealing door lifting device 100. The basic structure and principle of the lifting point inspection port 230 sealing device and the technical effects generated are the same as those of the first embodiment. For brief description, the part not mentioned in the embodiment can be referred to the corresponding content in the first embodiment.

[0060] In the embodiment, the point inspection port 230 is arranged at the rear end of the furnace body 210, and the fixed frame 110 is fixed at the rear top end of the furnace body 210, so that the lifting frame 120 can be conveniently installed.

[0061] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heating furnace back access door sealing door lifting device for being arranged at one end of a furnace body having an access, characterized in that, The utility model relates to a kind of point inspection door lifting mechanism, including: Fixed rack; Lifting rack is movably arranged on the fixed rack; Point inspection door is movably arranged at the bottom of the lifting rack; And, Lifting drive is arranged on the lifting rack and is in transmission connection with the point inspection door; Wherein, the lifting rack can reciprocate linearly along the opening direction of the point inspection port relative to the fixed rack, to drive the point inspection door to close or open the point inspection port; The top side of the fixed rack is provided with driving guide rail on both sides, the lifting rack is arranged in the fixed rack, and the top of the lifting rack is provided with driving roller on both sides, the driving roller is accommodated in the driving guide rail and can roll along the driving guide rail to drive the lifting rack to move;The fixed rack includes roller limiting rod, two bearing supports and two guide rail supports, the ends of the two guide rail supports are provided at the top ends of the two bearing supports, the two ends of the roller limiting rod are respectively connected with the ends of the two guide rail supports away from the bearing supports, and the driving guide rail is arranged on the two guide rail supports;The top of the lifting rack is further provided with at least two bearing rollers, the bearing rollers are arranged in a staggered manner with the driving rollers and roll against the top side of the guide rail support;The lifting rack includes mounting seat, mounting column arranged on both sides of the mounting seat and mounting plate arranged at the top end of the mounting column, the bearing rollers and the driving rollers are arranged on the mounting plate, the lifting drive is arranged on the mounting seat, and the two sides of the point inspection door are movably connected with the mounting column and are used to move up and down along the mounting column under the driving of the lifting drive;The mounting column is provided with lifting guide rail, and the two sides of the point inspection door are provided with lifting roller, the lifting roller is accommodated in the lifting guide rail and can roll along the lifting guide rail.

2. The furnace back access door lifting device of claim 1, wherein, The lifting drive includes cylinder and piston rod, the cylinder is fixed on the mounting seat, the piston rod is accommodated in the cylinder and extends downward, the top of the point inspection door is provided with floating joint, and the end of the piston rod is connected with the floating joint.

3. The furnace back access door lifting device of claim 1, wherein, The outer side of the point inspection door is further provided with outwardly protruding handle frame.

4. The furnace back access door lifting device of claim 3, wherein, The mounting column is further provided with safety jack, and the safety pin shaft is assembled in the safety jack, to insert the handle frame after the point inspection door moves upward to the preset position, to safely limit the point inspection door.

5. The furnace back access door lifting device of claim 1, wherein, The four corners of the point inspection door are provided with pressing plate.

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