Door lifting device of heavy furnace

Abstract

The utility model discloses a door lifting device of a heavy furnace. The door lifting device comprises a lifting door and a lifting door driving mechanism, the lifting door comprises a door plate, a furnace opening sealing structure is installed on the inner side plate face of the door plate, a reinforcing steel frame and a plurality of hanging positions are arranged on the outer side plate face of the door plate, and each hanging position is provided with a guide hanging piece. The door lifting driving mechanism comprises a driving air cylinder, a lifting support and a longitudinal limiting mechanism, the longitudinal limiting mechanism comprises two linear sliding rails, the top ends of the linear sliding rails are connected together through an air cylinder base, and the driving air cylinder is fixed to the air cylinder base. The lifting support is composed of an I-shaped structure and a pull rod structure, the I-shaped structure is composed of a transverse supporting plate and two vertical supporting plates, the pull rod structure is connected with the transverse supporting plate and a telescopic rod of the driving air cylinder at the same time, the two ends of each vertical supporting plate are each provided with a sliding block provided with a hanging position, and a door plate limiting mechanism is installed at the bottom of the linear sliding rail. By means of the mode, the sealing performance of the heavy furnace can be improved, and the quality stability of sintered products is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of high-temperature sintering equipment, in particular to a heavy-duty furnace door lifting device. Background Art

[0002] A sintering furnace is a special furnace that causes solid raw material particles such as ceramics to grow in size, reduce pores and grain boundaries, shrink the total volume, and increase density under high temperature conditions, thereby converting them into a sintered body with a certain specialized microstructure. It is widely used in the production of electronics, chemical industry, construction, etc. Commonly used sintering furnaces generally use saggers as blank carriers for stacking and then sending them into the furnace for production. In order to ensure the consistency of the sintering effect at each position in the furnace, the number of stacking layers is generally low, so the furnace mouth is also small. However, with the development of temperature control technology and the requirement to improve production efficiency, the furnace chamber of the sintering furnace has increased, and the furnace mouth has also increased accordingly. However, as the furnace mouth increases, the furnace mouth area increases significantly. In this way, in the actual sintering process, on the one hand, the pressure on the furnace mouth after the air in the furnace is heated increases significantly as a whole. On the other hand, after the furnace mouth area increases, it deforms significantly after being heated, which will lead to a significant reduction in the sealing effect, increase in energy consumption in the furnace, and even uneven temperature in the furnace chamber, resulting in a decrease in the yield rate. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a heavy-duty furnace door lifting device, which can ensure the sealing effect of the furnace door during the sintering process.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a heavy-duty furnace door lifting device, the heavy-duty furnace door lifting device is installed against the furnace mouth, and the heavy-duty furnace door lifting device comprises: a door lifting and a door lifting driving mechanism; the door lifting comprises a door panel, a furnace mouth sealing structure is installed on the inner plate surface of the door panel, the outer plate surface of the door panel is provided with a reinforcing steel frame, and a plurality of hanging positions are symmetrically arranged on the edges of both sides, a guide hanging piece is installed on each hanging position, and each guide hanging piece is provided with a mounting plate and a hanging plate, the mounting plate matches the shape of the hanging position, the hanging plate is perpendicular to the mounting plate, and a changing inclined hole is provided on the plate surface of the hanging plate; the door lifting driving mechanism comprises a driving cylinder, a lifting bracket and a longitudinal limiting mechanism, and the longitudinal limiting mechanism comprises two linear slide rails symmetrically fixed on both sides of the furnace mouth, and the top ends of the two linear slide rails are connected by a cylinder seat The cam is connected together, the driving cylinder is fixed on the cylinder seat, and the lifting bracket is composed of an I-shaped structure consisting of a horizontal brace plate and two vertical brace plates and a pull rod structure. The bottom of the pull rod structure is connected to the horizontal brace plate, and the telescopic rod of the driving cylinder is connected to the pull rod structure. A slider matching the linear slide rail is fixedly installed at both ends of each vertical brace plate, and each slider is provided with a mounting position, and the total number of mounting positions is the same as the number of mounting positions. Each mounting position corresponds to a guide hanging part, and each mounting position is equipped with a hanging bolt that is movably connected to the redirecting inclined hole on the corresponding guide hanging part. A door panel limiting mechanism is also installed at the bottom of the linear slide rail. When the door panel body falls down to close the furnace mouth, the door panel limiting mechanism supports the bottom of the door panel. At this time, the slider continues to slide down along the linear slide rail, and pushes the door panel toward the furnace mouth through the redirecting inclined hole on the guide hanging part.

[0005] In a preferred embodiment of the utility model, the furnace mouth sealing structure includes a plate surface sealing inner frame and a plate surface sealing outer frame arranged on the inner plate surface of the door panel, the plate surface sealing outer frame is arranged on the outside of the plate surface sealing inner frame, a sealing strip is installed between the plate surface sealing inner frame and the plate surface sealing outer frame, the furnace mouth is provided with a corresponding furnace mouth sealing outer frame and furnace mouth sealing inner frame, a sealing groove corresponding to the position of the sealing strip is provided between the furnace mouth sealing outer frame and the furnace mouth sealing inner frame, and when the furnace mouth is closed, the top of the sealing strip is just stuck in the sealing groove.

[0006] In a preferred embodiment of the utility model, the pull rod structure includes a plurality of directional pull rods symmetrically distributed on both sides of the driving cylinder, the top ends of the plurality of directional pull rods are connected together through a horizontal plate, the rod body of each directional pull rod passes through the cylinder seat and is hinged to the plate body of the horizontal brace plate, and the top end of the telescopic rod of the driving cylinder is connected to the inner side of the horizontal plate through a floating joint. A guide positioning tube is provided at the position where each directional pull rod passes through the cylinder seat.

[0007] In a preferred embodiment of the present invention, the linear slide rail comprises a base plate and a track, the base plate is fixed on the furnace mouth, the track is fixed on the inner side of the base plate, a bolt fixing position connected to the end of the vertical support plate is provided in the middle of the slide block, each bolt fixing position is composed of a plurality of bolt countersunk holes, and the bolts are installed in the bolt countersunk holes to fix the slide block to the outer side of the top end of the vertical support plate, and the slide block is symmetrically provided with a plurality of roller groups on both sides of the bolt fixing position facing the linear slide rail, each roller group includes two rollers respectively clamped on both sides of the track, and the mounting position on the slide block is provided with a track avoidance step, and bolt through holes corresponding to the redirecting inclined holes are arranged based on the track avoidance steps, and the mounting bolts first pass through the bolt through holes and then pass through the redirecting inclined holes on the corresponding guide hanging parts to mount the door panel on the slide block. The door panel limiting mechanism includes a top door seat, a top door roller and a positioning pin shaft. The top door seat has an overall cross-section of an L-shape and is composed of two mutually perpendicular arm plates, one of which is fixed to the bottom of the base plate by a fastening bolt, and the other arm plate is tightly attached to the inner side of the base plate. A wheel groove is provided on the top of the arm plate attached to the inner side of the base plate, and the positioning pin shaft passes through the groove walls on both sides of the wheel groove, and the top door roller is installed on the positioning pin shaft.

[0008] The beneficial effects of the utility model are as follows: the utility model is a further optimization of the furnace mouth structure of the existing small and medium-sized sintering furnaces, and the door panel is mounted on the door lifting bracket by adopting a hanging guide part, so that after the door lifting closes the furnace mouth, the downward movement of the door lifting bracket can be converted into a pressing force from multiple hanging positions simultaneously toward the furnace mouth, so that after the furnace mouth is heated, the furnace mouth is deformed and stressed evenly in all directions, and the overall closed structure will not be damaged, and a reinforcing steel frame is also installed on the outer plate surface of the furnace mouth, which effectively improves the structural strength of the entire door panel, further improves the stability of the furnace mouth closure, and reduces the possibility of heat leakage. This not only improves the energy utilization efficiency, but also significantly improves the temperature stability in the furnace, ensuring the stability of the overall product sintering quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the door opening structure of a preferred embodiment of the utility model;

[0010] Figure 2 yes Figure 1 Schematic diagram of the structure at A in the middle;

[0011] Figure 3 yes Figure 2 Schematic diagram of the mid-lift structure;

[0012] Figure 4 yes Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0013] Figure 5It is a schematic diagram of the structure after the guide rod is removed when the lifting door is closed;

[0014] Figure 6 yes Figure 5 A magnified schematic diagram of the local structure at C in the middle;

[0015] Figure 7 It is a schematic diagram of the inner structure of the lifting door and a schematic diagram of the side structure;

[0016] Figure 8 yes Figure 7 A magnified schematic diagram of the structure at D in the middle;

[0017] Fig. 9 It is a schematic diagram of the outer structure of the lifting door;

[0018] Fig.10 1. It is a schematic diagram of the limit slider structure;

[0019] Fig.11 is a schematic diagram of the side structure of the convex plate connecting member;

[0020] Fig.12 is a bottom structural schematic diagram of a convex plate connector;

[0021] The markings of the components in the accompanying drawings are as follows:

[0022] 1. Furnace mouth, 2. Door panel, 3. Cylinder seat, 4. Driving cylinder, 5. Directional pull rod, 6. Horizontal plate, 7. Floating joint, 8. Horizontal support plate, 9. Vertical support plate, 10. Guide hanging parts, 11. Linear slide rail, 12. Slider, 13. Hanging bolt, 14. Guide positioning tube, 15. Door panel limit mechanism, 16. Articulated seat;

[0023] 101. Sealing slot, 102. Furnace mouth sealing inner frame, 103. Furnace mouth sealing outer frame; 201. Sealing strip, 202. Plate surface sealing inner frame, 203. Plate surface sealing outer frame, 204. Reinforced steel frame, 205. Hanging position;

[0024] 1001. Mounting plate, 1002. Hanging plate, 1003. Direction-changing inclined hole; 1101. Bottom plate, 1102. Track; 1201. Roller assembly, 1202. Bolt fixing position; 1501. Top door roller, 1502. Top door seat, 1503. Positioning pin shaft, 1504. Fastening bolt. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0026] See also Figures 1 to 12 , the utility model embodiment includes:

[0027] A heavy-duty furnace door lifting device is installed based on a furnace mouth 1, and the heavy-duty furnace door lifting device includes: a lifting door and a lifting door driving mechanism; the lifting door includes a door panel 2, a furnace mouth sealing structure is installed on the inner panel of the door panel 2, and a reinforcing steel frame 204 is provided on the outer panel of the door panel 2, and 8 hanging positions 205 are symmetrically arranged on the two side edges of the outer panel, and a guide hanging component 10 is installed on each hanging position 205, and each guide hanging component 10 is provided with a mounting plate 1001 and a mounting plate 1002, the mounting plate 1001 matches the shape of the hanging position 205, the mounting plate 1002 is perpendicular to the mounting plate 1001, and a deflecting inclined hole 1003 is provided on the panel of the mounting plate 1002.

[0028] The door lifting drive mechanism includes a driving cylinder 4, a lifting bracket and a longitudinal limiting mechanism. The longitudinal limiting mechanism includes two linear slide rails 11 symmetrically fixed on both sides of the furnace mouth 1. The linear slide rails 11 include a bottom plate 1101 and a track 1102. The bottom plate 1101 is fixed on the furnace mouth 1, and the track 1102 is fixed on the inner side of the bottom plate 1101. The top ends of the bottom plates 1101 of the two linear slide rails 11 are connected together through a cylinder seat 3. The driving cylinder 4 is fixed on the cylinder seat 3. The lifting bracket It is composed of an I-shaped structure consisting of a horizontal support plate 8 and two vertical support plates 9 and a tie rod structure. The tie rod structure includes two directional tie rods 5 symmetrically distributed on both sides of the driving cylinder 4. The top ends of the two directional tie rods 5 are connected together through a horizontal plate 6. A hinge seat 16 is installed on the body of the horizontal support plate 8. The rod body of each directional tie rod 5 passes through the cylinder seat 3 and is hinged to the body of the horizontal support plate 8 through the hinge seat 16. The top end of the telescopic rod of the driving cylinder 4 is connected to the bottom of the horizontal plate 6 through a floating joint 7. A guide positioning tube 14 is provided at the position where each directional tie rod 5 passes through the cylinder seat 3. By using the hinge seat 16 and the floating joint 7, the influence of rigid deformation during the pulling process can be effectively reduced to prevent damage to the tail end of the directional tie rod 5 or the top end of the telescopic rod. The guide positioning tube 14 can further constrain the direction of the directional tie rod 5 so that the directional tie rod 5 remains in a vertical state when moving up and down.

[0029] A slider 12 matching the linear guide rail 11 is fixedly installed at both ends of each vertical support plate 9, and a bolt fixing position 1202 connected to the end of the vertical support plate 9 is provided in the middle of the slider 12. Each bolt fixing position 1202 is composed of two bolt countersunk holes. Two bolts are installed in the bolt countersunk holes to fix the slider 12 to the outside of the top of the vertical support plate 9. The slider 12 is symmetrically provided with two roller groups 1201 on both sides of the bolt fixing position 1202 facing the linear guide rail 11. Each roller group 1201 includes two rollers 1201 respectively clamped on both sides of the track 1102. Roller, so that through the roller group 1201, the slider 12 can slide up and down along the track 1102 under the push of the driving cylinder 4, and a mounting position is set at both ends of each slider 12, with a total of 8 mounting positions, each mounting position corresponds to a guide hanging component 10, and a track avoidance step is provided at the location of each mounting position. Bolt through holes corresponding to the redirecting inclined holes 1003 of the corresponding guide hanging component 10 are arranged in the track avoidance step. The mounting bolt 13 first passes through the bolt through hole and then passes through the redirecting inclined hole 1003 on the corresponding guide hanging component 10 to mount the door panel 2 on the slider 12. A door panel limiting mechanism 15 is also installed at the bottom of the linear slide rail 11. When the door panel 2 body falls to close the furnace mouth 1, the door panel limiting mechanism 15 supports the bottom of the door panel 2. At this time, the slider 12 continues to slide down along the linear slide rail 11, and pushes the door panel 2 toward the furnace mouth 1 through the redirecting inclined hole 1003 on the hanging plate 1002 to complete the clamping action.

[0030] The furnace opening sealing structure includes a plate surface sealing inner frame 202 and a plate surface sealing outer frame 203 arranged on the inner plate surface of the door panel 2, the plate surface sealing outer frame 203 is arranged around the outer side of the plate surface sealing inner frame 202, a sealing strip 201 is installed between the plate surface sealing inner frame 202 and the plate surface sealing outer frame 203, the furnace opening 1 is provided with a corresponding furnace opening sealing outer frame 103 and furnace opening sealing inner frame 102, a sealing card slot 101 corresponding to the position of the sealing strip 201 is arranged between the furnace opening sealing outer frame 103 and the furnace opening sealing inner frame 102, and when the furnace opening is closed, the top of the sealing strip 201 is just stuck in the sealing card slot 101. In this way, the sealing effect of the door can be effectively improved when the furnace opening 1 is closed.

[0031] The door panel limiting mechanism 15 includes a door top seat 1502, a door top roller 1501 and a positioning pin 1503. The door top seat 1502 has an L-shaped overall cross section and is composed of two mutually perpendicular arm plates, one of which is fixed to the bottom of the base plate 1101 by a fastening bolt 1504, and the other arm plate is closely attached to the inner side of the base plate 1101. A wheel groove is provided on the top of the arm plate attached to the inner side of the base plate 1101. The positioning pin 1503 passes through the groove walls on both sides of the wheel groove to install the door top roller 1501 in the wheel groove. The roller structure is used as the ejection point, which can reduce the friction between the ejection position and the bottom of the door panel 2 when the door panel 2 is pushed toward the furnace mouth 1 by the lifting bracket.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heavy-duty furnace door lifting device, the heavy-duty furnace door lifting device is installed on the furnace mouth, characterized in that: The heavy-duty furnace door lifting device includes: a door lifting and a door lifting driving mechanism; the door lifting includes a door panel, a furnace mouth sealing structure is installed on the inner panel of the door panel, a reinforcing steel frame is provided on the outer panel of the door panel, a plurality of hanging positions are symmetrically arranged on the edges of both sides, a guide hanging member is installed on each hanging position, a mounting plate and a hanging plate are provided on each guide hanging member, the mounting plate matches the shape of the hanging position, the hanging plate is perpendicular to the mounting plate, and a direction-changing inclined hole is provided on the panel of the hanging plate; the door lifting driving mechanism includes a driving cylinder, a lifting bracket and a longitudinal limiting mechanism, the longitudinal limiting mechanism includes two linear slide rails symmetrically fixed on both sides of the furnace mouth, the top ends of the two linear slide rails are connected together by a cylinder seat, the driving cylinder is fixed on the cylinder seat, and the lifting bracket is An I-shaped structure consisting of a horizontal brace plate and two vertical brace plates is composed of a pull rod structure, the bottom of the pull rod structure is connected to the horizontal brace plate, and the telescopic rod of the driving cylinder is also connected to the pull rod structure, and a slider matching the linear slide rail is fixedly installed at both ends of each vertical brace plate, and each slider is provided with a mounting position, and the total number of mounting positions is the same as the number of mounting positions, and each mounting position corresponds to a guide hanging component, and each mounting position is equipped with a hanging bolt that is movably connected to the redirecting inclined hole on the corresponding guide hanging component, and a door panel limiting mechanism is also installed at the bottom of the linear slide rail. When the door panel body falls down to close the furnace mouth, the door panel limiting mechanism supports the bottom of the door panel. At this time, the slider continues to slide down along the linear slide rail, and pushes the door panel toward the furnace mouth through the redirecting inclined hole on the guide hanging component.

2. The heavy-duty furnace door lifting device according to claim 1, characterized in that: The furnace mouth sealing structure includes a plate surface sealing inner frame and a plate surface sealing outer frame arranged on the inner plate surface of the door panel, the plate surface sealing outer frame is arranged on the outside of the plate surface sealing inner frame, a sealing strip is installed between the plate surface sealing inner frame and the plate surface sealing outer frame, the furnace mouth is provided with a corresponding furnace mouth sealing outer frame and furnace mouth sealing inner frame, a sealing groove corresponding to the position of the sealing strip is provided between the furnace mouth sealing outer frame and the furnace mouth sealing inner frame, and when the furnace mouth is closed, the top of the sealing strip is just stuck in the sealing groove.

3. The heavy-duty furnace door lifting device according to claim 1, characterized in that: The pull rod structure includes multiple directional pull rods symmetrically distributed on both sides of the driving cylinder. The top ends of the multiple directional pull rods are connected together through a cross plate. The rod body of each directional pull rod passes through the cylinder seat and is hinged to the plate body of the cross brace plate. The top end of the telescopic rod of the driving cylinder is connected to the inner side of the cross plate through a floating joint.

4. The heavy-duty furnace door lifting device according to claim 3, characterized in that: A guide positioning tube is provided at a position where each directional pull rod passes through the cylinder seat.

5. The heavy-duty furnace door lifting device according to claim 1, characterized in that: The linear slide rail comprises a base plate and a track, the base plate is fixed on the furnace mouth, the track is fixed on the inner side of the base plate, a bolt fixing position connected to the end of the vertical support plate is provided in the middle of the slide block, each bolt fixing position is composed of a plurality of bolt countersunk holes, and the bolts are installed in the bolt countersunk holes to fix the slide block to the outer side of the top end of the vertical support plate, and the slide block is symmetrically provided with a plurality of roller groups on both sides of the bolt fixing position facing the linear slide rail, and each roller group comprises two rollers respectively clamped on both sides of the track, and the mounting position on the slide block is provided with a track avoidance step, and bolt through holes corresponding to the redirecting inclined holes are arranged based on the track avoidance steps, and the mounting bolts first pass through the bolt through holes and then pass through the redirecting inclined holes on the corresponding guide hanging parts to mount the door panel on the slide block.

6. The heavy-duty furnace door lifting device according to claim 5, characterized in that: The door panel limiting mechanism includes a top door seat, a top door roller and a positioning pin shaft. The top door seat has an overall cross-section of an L-shape and is composed of two mutually perpendicular arm plates, one of which is fixed to the bottom of the base plate by a fastening bolt, and the other arm plate is tightly attached to the inner side of the base plate. A wheel groove is provided on the top of the arm plate attached to the inner side of the base plate, and the positioning pin shaft passes through the groove walls on both sides of the wheel groove, and the top door roller is installed on the positioning pin shaft.

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