High-temperature resistance furnace

Abstract

The utility model provides a high-temperature resistance furnace which comprises a framework which is a square three-dimensional frame, furnace walls are built on the inner side of the framework through insulating bricks, and a furnace opening is reserved in one furnace wall. The lifting frame is arranged on the side, corresponding to the furnace opening, of the framework, and the furnace door is slidably assembled in the lifting frame in the longitudinal direction; a lifting mechanism is arranged above the lifting frame so as to drive the furnace door in the longitudinal direction. Pressing mechanisms corresponding to the furnace door are arranged on the two sides of the lifting frame and drive the furnace door in the opening direction of the furnace opening so that the furnace door can be tightly attached to or loosened from the furnace opening. According to the furnace body, the framework serves as a supporting body, the stability of the furnace body is guaranteed, the lifting mechanism and the pressing mechanism are arranged on the furnace door, the lifting mechanism is used for lifting the furnace door, after the furnace door is in place, the pressing mechanism is used for conducting extrusion driving in the opening direction of the furnace opening, the furnace door is pressed on the furnace opening, and therefore the sealing performance of the furnace opening is guaranteed, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating furnaces, and in particular relates to a high-temperature resistance furnace. Background Art

[0002] The existing box-type resistance furnace is composed of a furnace base, a furnace body, a furnace mouth, a furnace mouth lifting mechanism, a heating resistance wire and a heat-insulating material arranged in the furnace body, and a trolley that can move along a guide rail. The furnace mouth is generally composed of a cast iron furnace mouth frame, and its inner side is built with refractory bricks, so it is very heavy. The furnace mouth lifting mechanism is composed of two pairs of sprockets and chains, which are driven by an electric motor and a reduction mechanism placed on the top of the furnace body, and the furnace mouth is moved up and down with the help of a chain placed on the furnace mouth. Since this type of furnace mouth lifting mechanism moves up and down, it is necessary to leave a certain gap between the furnace mouth and the furnace body. Although some mechanisms have been adopted to make the gap smaller, it is still the place where heat in the furnace is dissipated, so the insulation of the furnace is poor.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art. The utility model provides a high-temperature resistance furnace.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high temperature resistance furnace, comprising:

[0007] The frame is a square three-dimensional frame, and a furnace wall is formed by building insulation bricks inside the frame, and a furnace opening is reserved on one of the furnace walls;

[0008] A lifting frame, the lifting frame is provided on one side of the frame corresponding to the furnace opening, and a furnace door is longitudinally slidably mounted inside the lifting frame;

[0009] The lifting mechanism is provided above the lifting frame to drive the furnace door in the longitudinal direction; clamping mechanisms corresponding to the furnace door are provided on both sides of the lifting frame, and the clamping mechanisms drive the furnace door in the direction of the furnace opening to make the furnace door close to or loosen the furnace opening.

[0010] Preferably, an electric heating wire is provided on the inner wall of the furnace wall, and a conductive rod of the electric heating wire passes through the insulation brick and is connected to a power source.

[0011] Preferably, a shell is provided outside the frame, and an inspection window corresponding to the conductive rod is provided on the shell, and a window is installed on the inspection window in a detachable manner.

[0012] Preferably, the lifting frame is a door-type frame, and slide rails parallel to the columns of the lifting frame are provided on both sides of the furnace door, and the furnace door is longitudinally slidably assembled in the slide rails;

[0013] The two clamping mechanisms are respectively located on both sides of the lifting frame, and include guide plates, paddle plates and a driving cylinder. The guide plates are fixed to the side of the lifting frame, and the guide plates are provided with guide holes extending along the opening direction of the furnace mouth. The side of the slide rail is provided with guide columns passing through the guide holes.

[0014] The middle part of the shifting plate is connected to the outer side of the lifting frame through an axle seat, one end of the shifting plate is hinged to the guide column through a waist-shaped hole, and the other end is correspondingly hinged to the driving cylinder.

[0015] Preferably, the plurality of shift plates are fixedly connected via a rotating shaft.

[0016] Preferably, the lifting mechanism includes a driven wheel, a rotating wheel and a driving motor, the two driven wheels are respectively installed on both sides of the top of the lifting frame through mounting shafts, the two driven wheels are staggered in the direction of the furnace opening, the main shaft of the driving motor is connected to the two rotating wheels, and the driving steel cables wound on the two rotating wheels are respectively connected to the furnace door after passing through the two driven wheels.

[0017] Preferably, the slide rail is a slide groove with an opening pointing toward the furnace door, and two sliders sliding in the slide groove are respectively provided on both sides of the furnace door.

[0018] Beneficial effects: The furnace body uses the skeleton as the supporting body to ensure the stability of the furnace body. A lifting mechanism and a pressing mechanism are arranged on the furnace door. The lifting mechanism is used to lift the furnace door. After the furnace door is in place, the pressing mechanism is used to squeeze and drive in the direction of the furnace opening so that the furnace door is pressed against the furnace opening, thereby ensuring the sealing of the furnace opening and improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0020] Figure 1 A schematic diagram of the structure of a resistance furnace in a specific embodiment provided by the utility model;

[0021] Figure 2 A schematic structural diagram of a lifting frame in a specific embodiment provided by the utility model;

[0022] Figure 3 This is a schematic front view of a lifting frame in a specific embodiment provided by the utility model;

[0023] Figure 4 A schematic diagram of the structure of the thermal insulation brick in the specific embodiment provided by the utility model;

[0024] Figure 5 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0025] In the figure: 1. lifting frame; 2. frame; 3. window; 4. furnace door; 5. driven wheel; 6. driving motor; 7. rotating shaft; 8. dial plate; 9. driving cylinder; 10. guide plate; 11. shaft seat; 12. slide rail; 13. driving steel cable; 14. rotating wheel; 15. guide hole; 16. slider; 17. insulation brick; 18. conductive rod; 19. baffle; 20. sealing plate; 21. locking nut. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0027] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connection" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0029] like Figure 1-5As shown, a high-temperature resistance furnace includes a frame 2 and a lifting frame 1, wherein the frame 2 is a square three-dimensional frame welded by square steel or channel steel, and a furnace wall is formed by building insulation bricks 17 on the inner side of the frame 2, and a furnace mouth is reserved in one of the furnace walls. The size of the furnace mouth is determined according to the actual design. The upper end and both sides of the furnace mouth are formed by heat-resistant cast steel edge guards to form a furnace mouth steel plate, and an expansion joint is left between the furnace mouth steel plate and the insulation bricks 17. The furnace mouth steel plate is fixed to the insulation bricks 17 corresponding to the furnace mouth by bolts, which is convenient for later maintenance and replacement. A lifting frame 1 is provided on the side of the frame 2 corresponding to the furnace mouth. The lifting frame 1 includes a door-shaped structure formed by two columns and a crossbeam. The columns are fixed on the ground. A furnace door 4 is mounted inside the lifting frame 1 along the longitudinal sliding. A lifting mechanism is provided above the lifting frame 1 to drive the furnace door 4 along the longitudinal direction, thereby realizing the opening and closing of the furnace door 4.

[0030] A clamping mechanism corresponding to the furnace door 4 is provided on both sides of the lifting frame 1. The clamping mechanism drives the furnace door 4 along the opening direction of the furnace mouth to make the furnace door 4 close to or loosen the furnace mouth. When the furnace door 4 is in place to a closed state, the furnace door 4 is close to the furnace mouth to achieve sealing. When the furnace door 4 needs to be opened, the furnace door 4 loosens the furnace mouth so that the furnace door 4 can be lifted smoothly.

[0031] In an optional embodiment, an electric heating wire is provided on the inner wall of the furnace wall, and a conductive rod 18 of the electric heating wire passes through the insulation brick 17 and is connected to a power source. A perforation corresponding to the conductive rod 18 is provided on the insulation brick 17, and a baffle 19 is provided at one end of the conductive rod 18 corresponding to the inside of the insulation wall. A mounting hole corresponding to the conductive rod 18 is provided on the corresponding outside of the insulation brick 17. The mounting hole can be provided at the joint of two adjacent insulation bricks 17, or in the middle of the insulation brick 17, and no excessive restrictions are made here.

[0032] The part of the conductive rod 18 located outside the insulation brick 17 is provided with a sealing plate 20 and a locking nut 21. The sealing plate 20 slides on the conductive rod 18. Under the action of the locking nut 21, the sealing plate 20 squeezes the outer surface of the insulation brick 17, thereby ensuring the sealing performance and reducing the loss. Furthermore, this assembly method can solve the problem of disassembly of the existing conductive rod 18 and can quickly realize the replacement of the internal heating element.

[0033] The conductive rod 18 may be a metal rod, and the baffle 19 may be integrally formed with the conductive rod 18 or connected to the conductive rod 18 by a threaded connection or the like.

[0034] A hanging nail is arranged on the inner wall of the furnace wall, and the hanging nail is connected to the insulation brick 17 by threaded assembly. An insulator is arranged at one end of the hanging nail placed in the furnace for winding the electric heating wire.

[0035] In an optional embodiment, a shell is provided on the outside of the skeleton 2, and the shell is made of a metal plate, which can protect the outside of the insulation brick 17. The shell is provided with an inspection window corresponding to the conductive rod 18, and a window 3 is installed on the inspection window in a detachable manner, so that the conductive rod 18, electric heating wire, etc. can be disassembled and replaced according to actual needs.

[0036] In an optional embodiment, the lifting frame 1 is a door-type frame, and the columns on both sides of the furnace door 4 are two columns arranged at intervals, and the columns are I-beams or channel steels. Slide rails 12 parallel to the columns of the lifting frame 1 are provided on both sides of the furnace door 4, and the length of the slide rails 12 is adapted to the length of the columns. The furnace door 4 is longitudinally slidably assembled in the slide rails 12, so as to guide the furnace door 4 during the lifting process.

[0037] Two clamping mechanisms are provided, and the two clamping mechanisms are respectively located on both sides of the lifting frame 1, so as to synchronously drive both sides of the furnace door 4 to ensure the force balance after clamping on the furnace mouth.

[0038] The clamping mechanism includes a guide plate 10, a paddle plate 8 and a driving cylinder 9. The guide plate 10 is a metal plate and is correspondingly arranged between the two columns for the paddle plate 8 to extend into. At least two guide plates 10 are arranged on each column. Two columns are fixed at both ends of the guide plate 10 respectively. At least two guide plates 10 arranged at intervals are arranged on each column. A guide hole 15 extending along the opening direction of the furnace mouth is provided on the guide plate 10. A guide column passing through the guide hole 15 is provided on the side of the slide rail 12. The guide column is a metal column. The furnace door 4 is clamped or released by sliding along the guide hole 15.

[0039] The middle part of the paddle plate 8 is connected to the outer side of the lifting frame 1 through the shaft seat 11. One end of the paddle plate 8 is hinged to the guide column through the waist-shaped hole, so as to make way during the paddle movement. A driving cylinder 9 is correspondingly hinged at the other end of the paddle plate 8. The driving cylinder 9 extends along the opening direction of the furnace mouth. The paddle plate 8 drives the guide column to slide along the guide hole 15.

[0040] The plurality of shift plates 8 are fixedly connected via a rotating shaft 7 , and two shaft seats 11 are rotatably connected to the two ends of the rotating shaft 7 .

[0041] In the present application, two shifting plates 8 are provided, and only one of the two shifting plates 8 is connected to the driving cylinder 9 .

[0042] In an optional embodiment, the lifting mechanism includes a driven wheel 5, a rotating wheel 14 and a driving motor 6. The outer periphery of the rotating wheel 14 is provided with a winding groove for winding the driving steel cable 13. The two driven wheels 5 are respectively installed on both sides of the top of the lifting frame 1 through the mounting shaft, and are symmetrically distributed about the center line of the furnace door 4. The two driven wheels 5 are staggered in the direction of the furnace opening so that the driving steel cables 13 passing around the two wheels do not interfere with each other. The main shaft of the driving motor 6 is connected to the two rotating wheels 14. The driving steel cables 13 wound on the two rotating wheels 14 pass around the two driven wheels 5 respectively, pass downward through the crossbeam of the lifting frame 1, and are connected to the furnace door 4.

[0043] The driven wheel 5 and the rotating wheel 14 are in the same horizontal plane. A driven wheel 5 is correspondingly provided on the mounting shaft corresponding to the driven wheel 5 close to the rotating wheel 14 to guide the driving steel cable 13 .

[0044] In this embodiment, the slide rail 12 is a slide groove with an opening pointing to the furnace door 4, and can also be set as a channel steel. Two sliders 16 sliding in the slide groove are respectively provided on both sides of the furnace door 4. The two sliders 16 are respectively located at the upper and lower edges of the furnace door 4, so as to ensure the stability of the furnace door 4 during the lifting process.

[0045] In another embodiment, the rotating wheel 14 and the driven wheel 5 are both sprockets, and the number of teeth of the two is the same. The corresponding driving steel cable 13 should also be replaced by a chain. A counterweight block is provided on the side of the lifting frame 1. The weight of the counterweight block is the same as or close to the weight of the furnace door 4. In this way, after the two chains pass around the two rotating wheels 14 and the two driven wheels 5 respectively, they are connected to the furnace door 4. The furnace door 4 can be lifted and lowered under the drive of the driving motor 6.

[0046] A protective shell corresponding to the counterweight is provided on the side of the lifting frame 1, and the inner cavity of the protective shell has a lifting channel adapted to the cross section of the counterweight, thereby limiting the lifting trajectory of the counterweight. In this case, a tension sensor is provided below the chain between the two driven wheels 5, and the tension sensor is a touch switch. When the chain is tensioned, there is a gap of 2-10mm between the chain and the tension sensor. In the loose state, the middle of the chain sags to touch the tension sensor, and the connection stability of the chain needs to be inspected.

[0047] There are two reserved openings for TUS temperature measurement on the left and right sides of the furnace mouth panel, which meet the requirements of AMS2750G and are used for furnace temperature calibration.

[0048] An electric control cabinet is provided on the outside of the skeleton 2. The electric control cabinet has a touch control panel to drive the drive cylinder 9, the drive motor 6, etc. The touch control panel can have the functions of semi-automatic, manual, and maintenance modes in the stand-alone mode. Relevant parameters can be set on the panel, and data can be monitored and adjusted on the panel. There are indicator lights and operation buttons (or knobs) to display error alarms and self-diagnosis information, and the current status of the I / O signal is displayed at the same time, and it is distinguished by different colors. Once there is a faulty contact, the system will continue to alarm, and the fault point will be displayed on the current screen on the HMI.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A high temperature resistance furnace, characterized in that: include: The frame is a square three-dimensional frame, and a furnace wall is formed by building insulation bricks inside the frame, and a furnace opening is reserved on one of the furnace walls; A lifting frame, the lifting frame is provided on one side of the frame corresponding to the furnace opening, and a furnace door is longitudinally slidably mounted inside the lifting frame; A lifting mechanism is provided above the lifting frame to drive the furnace door in the longitudinal direction; clamping mechanisms corresponding to the furnace door are provided on both sides of the lifting frame, and the clamping mechanisms drive the furnace door in the direction of the furnace opening to make the furnace door close to or loose from the furnace opening.

2. The high temperature resistance furnace according to claim 1, characterized in that: An electric heating wire is arranged on the inner wall of the furnace wall, and a conductive rod of the electric heating wire passes through the insulation brick and is connected to a power source.

3. The high temperature resistance furnace according to claim 2, characterized in that: A shell is arranged outside the frame, and an inspection window corresponding to the conductive rod is arranged on the shell, and a window body is installed on the inspection window in a detachable manner.

4. The high temperature resistance furnace according to claim 1, characterized in that: The lifting frame is a door-shaped frame, and slide rails parallel to the columns of the lifting frame are provided on both sides of the furnace door, and the furnace door is longitudinally slidably assembled in the slide rails; The two clamping mechanisms are respectively located on both sides of the lifting frame, and include guide plates, paddle plates and a driving cylinder. The guide plates are fixed to the side of the lifting frame, and the guide plates are provided with guide holes extending along the opening direction of the furnace mouth. The side of the slide rail is provided with guide columns passing through the guide holes. The middle part of the shifting plate is connected to the outer side of the lifting frame through an axle seat, one end of the shifting plate is hinged to the guide column through a waist-shaped hole, and the other end is correspondingly hinged to the driving cylinder.

5. The high temperature resistance furnace according to claim 4, characterized in that: The plurality of shift plates are fixedly connected via a rotating shaft.

6. The high temperature resistance furnace according to claim 1, characterized in that: The lifting mechanism includes a driven wheel, a rotating wheel and a driving motor. The two driven wheels are respectively installed on both sides of the top of the lifting frame through mounting shafts. The two driven wheels are staggered in the direction of the furnace opening. The main shaft of the driving motor is connected to the two rotating wheels. The driving steel cables wound on the two rotating wheels are connected to the furnace door after passing through the two driven wheels.

7. The high temperature resistance furnace according to claim 4, characterized in that: The slide rail is a slide groove with an opening pointing to the furnace door, and two sliding blocks sliding in the slide groove are respectively arranged on both sides of the furnace door.

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