Self-lubricating quadrilateral connecting rod opening mechanism for furnace door

Abstract

The invention relates to a furnace door self-lubricating quadrilateral connecting rod opening mechanism, and relates to the technical field of furnace door opening structures. The furnace comprises a furnace body shell, a furnace door and a driving assembly, a feeding opening is formed in the furnace body shell, the furnace door is arranged on the furnace body shell and used for blocking the feeding opening, and the driving assembly is arranged on the furnace body shell, connected with the furnace door and used for driving the furnace door to move upwards. The furnace door has the effects that the furnace door is opened obliquely upwards, and the occupied space in front of the furnace body is small.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of furnace door opening structure, in particular to a furnace door self-lubricating quadrilateral link opening mechanism. BACKGROUND

[0002] In the production of gas aluminum melting furnace and gas aluminum holding furnace, in order to facilitate sampling, cleaning slag, saving energy, generally adopt furnace door. But the furnace door structure in the past generally adopts hinge type, the side of the furnace door is fixed on the furnace body by hinge, a vertical rod is installed at the top end of the furnace door, at this time the furnace body is welded with a support, the support and the top vertical rod of the furnace door are connected by a connecting rod. The furnace door is rotated to the left to open the furnace door, and the connecting rod assists the opening of the furnace door.

[0003] However, when opening the furnace door, a circular range with the side of the furnace door as the axis and the length direction of the furnace door as the radius needs to be reserved in front of the furnace body, that is, the rotation of the furnace door occupies a large space in front of the door, which needs to be improved. SUMMARY

[0004] In order to improve the problem that the space occupied by the rotating opening of the furnace door is large, the present application provides a furnace door self-lubricating quadrilateral link opening mechanism.

[0005] The furnace door self-lubricating quadrilateral link opening mechanism provided by the present application adopts the following technical scheme: A furnace door self-lubricating quadrilateral link opening mechanism, comprising a furnace body shell, a furnace door and a driving assembly, the furnace body shell is provided with a feeding port, the furnace door is arranged on the furnace body shell and used for blocking the feeding port, the driving assembly is arranged on the furnace body shell and connected with the furnace door and used for driving the furnace door to move upward.

[0006] By adopting the above technical scheme, when opening the furnace door, the driving assembly is started to drive the furnace door to move along an inclined upward trajectory until the furnace door is separated from the furnace body shell, thereby realizing the opening of the feeding port. Since the opening of the furnace door is moving upward, the space occupied in front of the furnace body shell is small. Compared with the way of directly rotating the furnace door to open the furnace door, the operator does not need to move away from the furnace body at a long distance when opening the furnace door, so that the distance between the furnace bodies is relatively small, thereby relatively reducing the floor area.

[0007] Optionally, the furnace body shell is provided with two fixed seats, the two fixed seats are located on the two sides of the furnace door respectively, the fixed seat is connected with an upper connecting rod and a lower connecting rod, the upper connecting rod comprises a middle beam and two upper swing arms, the middle beam is horizontally arranged and located between the two fixed seats, the driving assembly is connected with the middle beam, the two upper swing arms are located at the two ends of the middle beam respectively, one end of the upper swing arm is rotatably connected with the end of the middle beam, and the other end is rotatably connected with the fixed seat; The lower connecting rod comprises a counterweight pin shaft and two connecting rods, the furnace door is provided with a mounting block, the counterweight pin shaft is inserted into the mounting block, the counterweight pin shaft is parallel to the middle beam and is located below the middle beam, and the two connecting rods are respectively located at two ends of the counterweight pin shaft, and one end of the connecting rod away from the counterweight pin shaft is hingedly connected to the fixed seat.

[0008] By adopting the above technical scheme, when the furnace door needs to be opened, the driving assembly is started to drive the middle beam to move above the connecting part of the fixed seat and the swing arm, so as to form the power of opening the furnace door upward, and the counterweight pin swings with the connecting rod due to the movement of the furnace door, so that the connecting rod can rotate, at this time, the middle beam and the upper swing arms on both sides of the furnace door form a quadrilateral structure, and the counterweight pin and the connecting rods on both sides of the furnace door also form a quadrilateral structure, so that the upper connecting rod and the lower connecting rod work cooperatively to ensure the stability of the opening and closing of the furnace door.

[0009] In the normal melting process, when the furnace door is in the closed state, the upper swing arm is in the downward position at this time, and the self-rotation of the furnace door and the weight of the counterweight pin tightly press the furnace door on the furnace body, so as to realize the sealing of the furnace body.

[0010] Optionally, the driving assembly comprises a chain and a lifting lug, the lifting lug is fixed to the top of the furnace door, the upper part of the furnace body shell is provided with a motor reduction mechanism, the motor reduction mechanism is located above the furnace door, the motor reduction mechanism is connected with a winding roller, the motor reduction mechanism is used to drive the winding roller to rotate, one end of the chain is fixed to the winding roller, and the other end is connected with the lifting lug, when the winding roller rotates, the chain is wound on the winding roller, and the middle part of the intermediate beam is rotatably connected to the lifting lug.

[0011] By adopting the above technical scheme, the motor reduction mechanism is started to drive the winding roller to rotate, so that the chain is gradually wound on the winding roller, at this time, the length of the chain released is shortened, so as to drive the lifting lug to rise, and then drive the furnace door to rotate upward and open.

[0012] Optionally, the upper swing arm is connected with a limiting assembly, the limiting assembly is used to control the rotation angle of the upper swing arm, the limiting assembly comprises a support and two swing rods, the support is fixed to the bottom of the furnace body shell, a sliding groove is formed in the side wall of the support, the sliding groove is arranged in the vertical direction, and the bottom end of the sliding groove is inclined away from the furnace body shell, the two swing rods correspond to the upper swing arm one by one, one end of the swing rod is hingedly connected to the middle part of the upper swing arm, the other end is inserted into the sliding groove and can move in the sliding groove.

[0013] By adopting the technical scheme, when the furnace door is opened, the driving assembly drives the middle beam to rotate upward, so that the upper swing arm rotates, and drives the swing rod to slide upward along the sliding groove synchronously until reaching the upper limit of the sliding groove, so that the farthest distance of the upper swing arm to the support is the length of the swing rod, that is, the upper swing arm cannot continue to rotate upward, thereby playing a limiting role, so that the furnace door is in the maximum opening position at this time, and the opening angle of the furnace door can be controlled.

[0014] Optionally, the support is provided with a supporting roller, the supporting roller is horizontally arranged, the end of the supporting roller penetrates the sliding groove and can move in the sliding groove, the side wall of the swing rod is provided with a plurality of positioning holes, the plurality of positioning holes are uniformly distributed along the length direction of the swing rod, and the end of the supporting roller is inserted into the positioning hole.

[0015] By adopting the technical scheme, the effective length of the swing rod can be adjusted by replacing the supporting roller and inserting it into different positioning holes, so that the opening angle of the furnace door is controlled, and the rotation range of the upper swing arm is adjusted.

[0016] Optionally, the furnace body shell is provided with a smoke hood, the smoke hood is located above the furnace door, the top of the smoke hood is communicated with a flue gas passage, the flue gas passage is provided with an exhaust valve, and the smoke hood is provided with a filtering and cleaning assembly.

[0017] By adopting the technical scheme, when the furnace door is opened, the exhaust valve is automatically opened or closed according to the flue gas temperature, that is, when the flue gas temperature is low, the exhaust valve is opened, so that the flue gas passage is unobstructed, and the discharge of flue gas is realized, and when the flue gas temperature is high, the exhaust valve is automatically closed, so that the spread of high-temperature inspection to other areas is effectively blocked.

[0018] Optionally, the filtering and cleaning assembly comprises an upper filter plate and a lower filter plate, the upper filter plate is arranged at the top of the smoke hood and covers the top opening of the smoke hood, the lower filter plate is arranged at the bottom of the smoke hood and covers the bottom opening of the smoke hood, the upper filter plate comprises a mounting frame and a plurality of mounting plates, the peripheral side of the mounting frame is attached to the inner wall of the smoke hood, and the plurality of mounting plates are arranged in sequence along the length direction of the mounting frame; one side of the mounting plate is hinged to the mounting plate, and the other side is connected to the mounting plate through a mounting spring. The lower filter plate comprises a connecting frame and a plurality of connecting plates, the peripheral side of the connecting frame is attached to the inner wall of the smoke hood, and the plurality of connecting plates are arranged in sequence along the length direction of the connecting frame; one side of the connecting plate is hinged to the connecting frame, and the other side is connected to the connecting frame through a connecting spring. The smoke hood is provided with a moving assembly, the moving assembly is connected with the mounting frame and the connecting frame, and is used for driving the mounting frame and the connecting frame to move close to or away from each other, the mounting plates and the connecting plates are arranged alternately, and the upper filter plate can penetrate the lower filter plate.

[0019] By adopting the above technical scheme, when the furnace door is opened, the flue gas in the furnace body is discharged through the feeding opening and enters the smoke hood upward, the flue gas first reaches the lower filter plate, then the flue gas passes through the pores on the lower filter plate and enters the smoke hood, the lower filter plate plays a filtering role on the flue gas, so that the relatively clean gas enters the smoke hood, then the flue gas reaches the upper filter plate, and the gas discharged through the exhaust passage is relatively clean through the filtering of the upper filter plate, so that the environment is not easily polluted and is more environmentally friendly.

[0020] Wherein, the impurities of the flue gas cannot pass through the lower filter plate and the upper filter plate, so that the impurities are left below the lower filter plate and the upper filter plate, then the moving assembly is started to drive the lower filter plate and the upper filter plate to approach each other, when the upper filter plate and the lower filter plate meet, that is, the mounting plate and the connecting plate abut, then the upper filter plate and the lower filter plate continue to approach each other, so that the mounting plate exerts a downward pressure on the connecting plate, and the connecting plate also exerts an upward thrust on the mounting plate.

[0021] Wherein, the stable support of the mounting plate is at the rotating shaft of the mounting plate, and the rotating shaft of the mounting plate exerts a pressure on one end of the connecting spring connected to the connecting plate, so that the connecting plate rotates, the connecting spring deforms and stretches, similarly, the stable support of the connecting plate is at the rotating shaft of the connecting plate, and the rotating shaft of the connecting plate exerts a thrust on one end of the mounting spring connected to the mounting plate, so that the mounting plate rotates, the mounting spring deforms and stretches, that is, the mounting plate tilts upward, and the connecting plate tilts downward, at this time, the inclination angles of the mounting plate and the connecting plate are consistent, and the mounting plate and the connecting plate are in close contact. The mounting plate and the connecting plate continue to approach, so that the mounting plate and the connecting plate abut and slide, in this process, the side walls of the mounting plate and the connecting plate are scraped and cleaned, until a single mounting plate passes through between two adjacent connecting plates, then under the action of the mounting spring, it quickly returns to the horizontal state, similarly, the connecting plate passes through the mounting plate and becomes horizontal under the action of the connecting spring, realizing the exchange of the positions of the upper filter plate and the lower filter plate, so that the side of the upper filter plate originally facing the inside of the smoke hood becomes facing the furnace door, that is, the relatively clean side serves as the side first contacting the flue gas to filter the flue gas, avoiding that too many impurities block the pores on the filter plate and affect the discharge of the flue gas.

[0022] Wherein, the side of the lower filter plate originally facing the furnace door is attached with more impurities due to filtering more impurities in the flue gas, and is automatically cleaned during the movement process, so as to replace the upper filter plate and the lower filter plate next time, so as to realize the continuous use of clean filter plates.

[0023] Optionally, the moving assembly includes a moving gear and two moving racks, the moving gear is rotatably connected to the smoke hood, the moving rack is vertically arranged, and the moving rack is slidably connected to the smoke hood, the moving gear is located between the two moving racks, the moving gear is engaged with the moving racks, and the moving gear rotates to drive the two moving racks closer to or away from each other, one of the moving racks is connected to the mounting frame, and the other moving rack is connected to the connecting frame.

[0024] By adopting the above technical solution, the movable gear is driven to rotate, which drives the two movable racks to move synchronously, so that the mounting frame and the connecting frame are moved closer to or farther away from each other, thereby realizing the exchange of the positions of the upper filter plate and the lower filter plate.

[0025] Optionally, the driving assembly includes a stretching cylinder, which is arranged on the furnace body shell through a mounting rod, and the output end of the stretching cylinder is connected to the upper swing arm. The stretching cylinder is located above the furnace door and is used to drive the upper swing arm to rotate when the stretching cylinder contracts.

[0026] By adopting this technical solution, the contraction of the tension cylinder directly drives the rotation of the upper swing arm, thereby opening and closing the furnace door. This drive method has a relatively simple structure and can quickly respond to control signals to achieve rapid opening and closing of the furnace door.

[0027] Optionally, the driving assembly includes a push cylinder, which is arranged on the furnace body shell, and the output end of the push cylinder is connected to the upper swing arm. When the push cylinder is extended, it is used to push the upper swing arm to rotate.

[0028] By adopting the above technical solution, when the push cylinder extends, its output end pushes the upper swing arm to rotate, thereby opening the furnace door. This drive method can provide greater thrust and is suitable for heavier furnace doors.

[0029] In summary, this application has at least one of the following beneficial effects: 1. When opening the furnace door, the drive assembly is started to drive the furnace door to move along an inclined upward trajectory until the furnace door is separated from the furnace shell, thereby opening the charging port. Since the furnace door opens by moving obliquely upward, the space in front of the furnace shell is smaller. Compared with the method of directly rotating the furnace door to open the furnace door, when opening the furnace door, the operator does not need to leave the furnace shell far away, so that the distance between the furnace shells is relatively small, thereby making the occupied area relatively small; 2. When the furnace door is opened, the flue gas is discharged upward through the bottom of the smoke hood. The flue gas first contacts the bottom wall of the lower filter plate, enters the smoke hood after being filtered by the lower filter plate, and then reaches the upper filter plate, is filtered by the upper filter plate and then discharged, so that the gas discharged through the exhaust channel is relatively clean, less likely to pollute the environment, and more environmentally friendly; during this period, the moving component is started to drive the upper filter plate and the lower filter plate to approach each other and pass through each other, exchanging the positions of the upper filter plate and the lower filter plate, so that the cleaner upper filter plate contacts the flue gas first to filter the flue gas, and in the interlacing process, the impurities on the upper filter plate and the lower filter plate are also scraped off simultaneously so that the upper filter plate and the lower filter plate can be replaced next time, thereby realizing the continuous use of clean filter plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural diagram of Example 1 of the present application; Figure 2 It is a structural diagram of the filter cleaning component; Figure 3 This is a structural diagram of Example 2 of the present application; Figure 4 This is a structural diagram of Example 3 of this application.

[0031] In the figure: 10, furnace shell; 11, fixing seat; 12, motor reduction mechanism; 121, winding roller; 13, smoke hood; 131, smoke duct; 1311, smoke exhaust valve; 14, mounting rod; 20, furnace door; 21, mounting block; 30, drive assembly; 31, chain; 32, lifting lug; 33, stretching cylinder; 34, pushing cylinder; 40, upper connecting rod; 41, middle beam; 42, upper swing arm; 50, lower connecting rod; 51, counterweight pin Shaft; 52, connecting rod; 60, limit assembly; 61, bracket; 611, slide; 62, rocker; 621, positioning hole; 70, roller; 80, filter cleaning assembly; 81, upper filter plate; 811, mounting frame; 812, mounting plate; 813, mounting spring; 82, lower filter plate; 821, connecting frame; 822, connecting plate; 823, connecting spring; 90, moving assembly; 91, moving gear; 92, moving rack. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1-4 This application is described in further detail.

[0033] Example 1: The embodiment of the present application discloses a self-lubricating quadrilateral connecting rod opening mechanism for the furnace door 20. Figure 1 and Figure 2The self-lubricating quadrilateral link opening mechanism of the furnace door 20 comprises a furnace body shell 10, a furnace door 20, a driving assembly 30, a fixed seat 11, an upper link 40, a lower link 50, a limiting assembly 60, a smoke hood 13, a flue gas passage 131, a smoke exhaust valve 1311 and a filtering and cleaning assembly 80, wherein the furnace body shell 10 is provided with a feeding opening, the furnace door 20 is arranged on the furnace body shell 10 to block the feeding opening, and the driving assembly 30 is arranged on the furnace body shell 10 and connected with the furnace door 20 to drive the furnace door 20 to move upward, so that the furnace door 20 can be quickly and stably opened and closed, the temperature in the furnace is stabilized, and the heat is effectively utilized. This is because the power provided by the driving assembly 30 can accurately control the movement of the furnace door 20, avoiding the problem that the traditional method is difficult to accurately control.

[0034] With reference to Figure 1 and Figure 2 Specifically, the furnace body shell 10 is provided with two fixed seats 11, and the two fixed seats 11 are located on the two sides of the furnace door 20. The fixed seat 11 is firmly installed on the furnace body shell 10 by means of bolts or the like.

[0035] With reference to Figure 1 and Figure 2 The upper link 40 comprises a middle beam 41 and two upper swing arms 42. The middle beam 41 is horizontally arranged and located between the two fixed seats 11. The middle beam 41 is generally a long strip-shaped steel beam. The two upper swing arms 42 are located at the two ends of the middle beam 41. One end of the upper swing arm 42 is rotatably connected to the end of the middle beam 41, and the other end is rotatably connected to the fixed seat 11.

[0036] With reference to Figure 1 and Figure 2 The lower link 50 comprises a counterweight pin shaft 51 and two connecting rods 52. The furnace door 20 is fixed with a mounting block 21. The counterweight pin shaft 51 penetrates the mounting block 21. The counterweight pin shaft 51 is parallel to the middle beam 41 and located below the middle beam 41. The two connecting rods 52 are located at the two ends of the counterweight pin shaft 51. One end of the connecting rod 52 away from the counterweight pin shaft 51 is hingedly connected to the fixed seat 11. The connecting rod 52 is a positive and negative thread rod, which can adjust its length to adapt to the distance between the fixed seat 11 and the counterweight pin shaft 51.

[0037] When the furnace door 20 needs to be opened, the driving assembly 30 is started to drive the middle beam 41 to move with the swing arms 42 and the fixed seat 11 as the shaft, forming the power of the furnace door 20 rotating upward to open. Due to the movement of the furnace door 20, the counterweight pin shaft swings with the connecting rod 52, so that the connecting rod 52 can rotate. At this time, the middle beam 41 and the upper swing arms 42 on both sides of the furnace door 20 form a quadrilateral structure, and the counterweight pin shaft and the connecting rod 52 on both sides of the furnace door 20 also form a quadrilateral structure, so that the upper link 40 and the lower link 50 work cooperatively to ensure the stability of the opening and closing of the furnace door 20.

[0038] In the normal melting process, when the furnace door 20 is in a closed state, the upper swing arm 42 is in a downward position, and the self-rotation of the furnace door 20 and the weight of the counterweight pin tightly press the furnace door 20 on the furnace body, realizing the sealing of the furnace body.

[0039] Referring to Figure 1 and Figure 2 , the drive assembly 30 includes a chain 31 and an ear 32, and the ear 32 is fixed on the top of the furnace door 20. The ear 32 is usually a metal block structure, which is fixed on the top of the furnace door 20 by welding or bolt connection. Alternatively, the ear 32 can be made together with the furnace door 20 by one-piece molding. The upper part of the furnace body shell 10 is provided with a motor reduction mechanism 12, which is located above the furnace door 20. The motor reduction mechanism 12 is connected with a winding roller 121, and the motor reduction mechanism 12 is used to drive the winding roller 121 to rotate. The motor reduction mechanism 12 is composed of a motor and a speed reducer. The motor provides power, and the speed reducer adjusts the rotating speed to ensure the stable rotation of the winding roller 121. Alternatively, a combination of a hydraulic motor and a speed reducer can be used as a power source. One end of the chain 31 is fixed on the winding roller 121, and the other end is connected with the ear 32. When the winding roller 121 rotates, the chain 31 is wound on the winding roller 121, and the middle part of the intermediate beam 41 is rotatably connected to the ear 32. The chain 31 is generally a high-strength metal chain 31, and the connecting parts of the chain 31 with the winding roller 121 and the ear 32 are fixed by pins or buckles to ensure the reliability of the connection.

[0040] This connection mode makes the motor reduction mechanism 12 drive the ear 32 to rise, and then drive the furnace door 20 to rotate upward and open, so that the space occupied in front of the furnace body shell 10 is relatively small. Compared with directly rotating the furnace door 20 to open the furnace door 20, the operator does not need to move away from the furnace body at a long distance when opening the furnace door 20, so that the distance between the furnaces is relatively small, thereby relatively reducing the floor area.

[0041] Referring to Figure 1 and Figure 2 , the upper swing arm 42 is connected with a limiting assembly 60, and the limiting assembly 60 is used to control the rotating angle of the upper swing arm 42. The limiting assembly 60 includes a bracket 61 and two swing rods 62. The bracket 61 is fixed on the bottom of the furnace body shell 10. The side wall of the bracket 61 is provided with a sliding groove 611, which is arranged in the vertical direction and the bottom end of the sliding groove 611 is inclined away from the furnace body shell 10. The sliding groove 611 provides guidance for the movement of the swing rod 62, and its surface is treated to reduce friction. The two swing rods 62 correspond to the upper swing arm 42 one by one. One end of the swing rod 62 is hinged to the middle part of the upper swing arm 42, and the other end is inserted into the sliding groove 611 and can move in the sliding groove 611.

[0042] With reference to Figure 1 and Figure 2 , the support 61 is provided with a roller 70, the roller 70 is horizontally arranged, and the end of the roller 70 is provided with a sliding groove 611 and can move in the sliding groove 611. A plurality of positioning holes 621 are arranged on the side wall of the swing rod 62, the plurality of positioning holes 621 are uniformly distributed along the length direction of the swing rod 62, and the end of the roller 70 is inserted into the positioning hole 621. The positioning hole 621 adjusts the effective length of the swing rod 62, so as to control the opening angle of the furnace door 20. The effective length of the swing rod 62 can be adjusted by replacing the roller 70 inserted into different positioning holes 621.

[0043] With reference to Figure 1 and Figure 2 , the smoke hood 13 is arranged on the furnace body shell 10 and located above the furnace door 20. The top of the smoke hood 13 is communicated with a flue gas passage 131, and the flue gas passage 131 is provided with an exhaust valve 1311. The flue gas passage 131 is usually a pipeline structure made of steel and is internally treated for corrosion resistance. An alternative feature can be a flue gas passage 131 made of ceramic material to improve high temperature resistance. The exhaust valve 1311 is used to control the emission of flue gas and can be automatically opened and closed according to the actual flue gas temperature, usually using electric or pneumatic control mode.

[0044] With reference to Figure 1 and Figure 2 , the filter cleaning assembly 80 is arranged in the smoke hood 13, and the filter cleaning assembly 80 includes an upper filter plate 81 and a lower filter plate 82. The upper filter plate 81 is arranged on the top of the smoke hood 13 and covers the top opening of the smoke hood 13, and the lower filter plate 82 is arranged on the bottom of the smoke hood 13 and covers the bottom opening of the smoke hood 13. The upper filter plate 81 includes a mounting frame 811 and a plurality of mounting plates 812, the peripheral side of the mounting frame 811 is attached to the inner wall of the smoke hood 13, and the plurality of mounting plates 812 are arranged in sequence along the length direction of the mounting frame 811. One side of the mounting plate 812 is hinged to the mounting plate 812, and the other side is connected to the mounting plate 812 through a mounting spring 813.

[0045] With reference to Figure 1 and Figure 2The lower filter plate 82 comprises a connecting frame 821 and a plurality of connecting plates 822, the peripheral side of the connecting frame 821 is attached to the inner wall of the smoke hood 13, and the plurality of connecting plates 822 are arranged horizontally along the length direction of the connecting frame 821 in sequence, one side of the connecting plate 822 is hinged on the connecting frame 821, and the other side is connected to the connecting frame 821 through a connecting spring 823. The structure and material of the connecting frame 821 and the connecting plate 822 are similar to those of the mounting frame 811 and the mounting plate 812. The smoke hood 13 is provided with a moving assembly 90, the moving assembly 90 is connected with the mounting frame 811 and the connecting frame 821, and is used to drive the mounting frame 811 and the connecting frame 821 to move close to or away from each other. The mounting plate 812 and the connecting plate 822 are arranged alternately, and the upper filter plate 81 can pass through the lower filter plate 82.

[0046] When the furnace door 20 is opened, the flue gas in the furnace body is discharged through the feeding port and enters the smoke hood 13 upward. The flue gas first reaches the lower filter plate 82, then passes through the pores on the lower filter plate 82 and enters the smoke hood 13, the lower filter plate 82 plays a filtering role on the flue gas, so that the relatively clean gas enters the smoke hood 13, and then the flue gas reaches the upper filter plate 81, and the flue gas is filtered through the upper filter plate 81, so that the gas discharged through the exhaust passage is relatively clean and is not easy to pollute the environment, which is more environmentally friendly.

[0047] Referring to Figure 1 and Figure 2 , the moving assembly 90 comprises a moving gear 91 and two moving racks 92, the moving gear 91 is rotationally connected to the smoke hood 13, the moving racks 92 are vertically arranged and are slidingly connected to the smoke hood 13, the moving gear 91 is located between the two moving racks 92, the moving gear 91 is engaged with the moving racks 92, and the moving gear 91 rotates to drive the two moving racks 92 to move close to or away from each other. One of the moving racks 92 is connected with the mounting frame 811, and the other moving rack 92 is connected with the connecting frame 821.

[0048] The impurities of the flue gas cannot pass through the lower filter plate 82 and the upper filter plate 81, so that the impurities are left below the lower filter plate 82 and the upper filter plate 81. Then the moving gear 91 is driven to rotate, so that the moving racks 92 drive the lower filter plate 82 and the upper filter plate 81 to move close to each other. When the upper filter plate 81 and the lower filter plate 82 meet, that is, the mounting plate 812 and the connecting plate 822 abut, then the upper filter plate 81 and the lower filter plate 82 continue to move close to each other, so that the mounting plate 812 exerts a downward pressure on the connecting plate 822, and the connecting plate 822 also exerts an upward thrust on the mounting plate 812.

[0049] Referring to Figure 1 and Figure 2Wherein, the stable support of the mounting plate 812 is at the rotating shaft of the mounting plate 812, and the rotating shaft of the mounting plate 812 exerts pressure on one end of the connecting spring 823 connected to the connecting plate 822, so that the connecting plate 822 rotates, the connecting spring 823 is deformed and stretched, and similarly, the stable support of the connecting plate 822 is at the rotating shaft, which exerts a pushing force on one end of the mounting spring 813 connected to the mounting plate 812, so that the mounting plate 812 rotates, the mounting spring 813 is deformed and stretched, that is, the mounting plate 812 tilts upward, and the connecting plate 822 tilts downward. At this time, the inclination angles of the mounting plate 812 and the connecting plate 822 are consistent, and the mounting plate 812 and the connecting plate 822 are in close contact. The mounting plate 812 and the connecting plate 822 continue to approach, so that the mounting plate 812 and the connecting plate 822 are in close contact. During this process, the side walls of the mounting plate 812 and the connecting plate 822 are scraped and cleaned, until a single mounting plate 812 passes between two adjacent connecting plates 822, and then under the action of the mounting spring 813, it quickly returns to the horizontal state, and similarly, the connecting plate 822 passes through the mounting plate 812 and becomes horizontal under the action of the connecting spring 823, realizing the exchange of the positions of the upper filter plate 81 and the lower filter plate 82, so that the side of the upper filter plate 81 originally facing the inside of the smoke hood 13 becomes the side facing the furnace door 20, that is, the cleaner side is used as the side that first contacts the flue gas, so that the flue gas is filtered, avoiding the blockage of the pores on the filter plate by too many impurities and affecting the discharge of the flue gas.

[0050] Wherein the side of the lower filter plate 82 originally facing the furnace door 20 is attached with more impurities due to filtering more impurities in the flue gas, and is automatically cleaned during the movement process in order to replace the upper filter plate 81 and the lower filter plate 82 next time, so as to realize the continuous use of clean filter plates.

[0051] The implementation principle of the first embodiment of the present application is that when the furnace door 20 is opened, the motor speed reduction mechanism 12 is started, so that the chain 31 drives the lifting lug 32 to rise, drives the upper connecting rod 40 to move, and drives the furnace door 20 to move along an upwardly inclined trajectory until the furnace door 20 is separated from the furnace body shell 10, realizing the opening of the feeding port. Since the opening of the furnace door 20 is upwardly inclined, the space occupied by the furnace body shell 10 in front is relatively small, compared with the way of directly rotating the furnace door 20 to open the furnace door 20, the operator does not need to move away from the furnace body at a long distance when opening the furnace door 20, so that the distance between the furnaces is relatively small, thereby relatively reducing the floor area.

[0052] Embodiment two, The difference between the second embodiment of the present application and the first embodiment is that Figure 1The driving assembly 30 includes a stretching cylinder 33 arranged on the furnace body shell 10 through a mounting rod 14, the output end of the stretching cylinder 33 is connected with the upper swing arm 42, and the stretching cylinder 33 is located above the furnace door 20 and is used to drive the upper swing arm 42 to rotate when the stretching cylinder 33 is contracted. The stretching cylinder 33 is generally a pneumatic or hydraulic cylinder, the mounting rod 14 is generally a metal rod, and the stretching cylinder 33 is fixed on the furnace body shell 10 by means of bolts or the like. Alternatively, an electric push rod can be used instead of the stretching cylinder 33.

[0053] The implementation principle of the second embodiment of the present application is that the contraction action of the stretching cylinder 33 directly drives the upper swing arm 42 to rotate, so as to realize the opening and closing of the furnace door 20. This driving mode has a relatively simple structure, can quickly respond to a control signal, and realizes the rapid opening and closing of the furnace door 20. Compared with the traditional motor speed reduction mechanism 12 and chain 31 driving mode, the abrasion and noise problems caused by the chain 31 transmission are reduced, the reliability and stability of the equipment are improved, and the maintenance cost is also reduced.

[0054] The third embodiment of the present application, The difference between the third embodiment of the present application and the above-mentioned embodiments is that Figure 2 Figure 3 Figure 4 The driving assembly 30 includes a pushing cylinder 34 arranged on the furnace body shell 10, the output end of the pushing cylinder 34 is connected with the upper swing arm 42, and the pushing cylinder 34 is used to push the upper swing arm 42 to rotate when the pushing cylinder 34 is extended. The pushing cylinder 34 is generally a pneumatic or hydraulic cylinder and is installed on the furnace body shell 10 by means of bolts or the like. Alternatively, an electric telescopic rod can be used instead of the pushing cylinder 34.

[0055] The implementation principle of the third embodiment of the present application is that the output end of the pushing cylinder 34 pushes the upper swing arm 42 to rotate when the pushing cylinder 34 is extended, so as to realize the opening of the furnace door 20. This driving mode can provide a larger pushing force and is suitable for a heavier furnace door 20. Compared with the stretching cylinder 33 driving mode, the pushing cylinder 34 can better cope with the resistance in the opening process of the furnace door 20 and ensure the stable opening of the furnace door 20. At the same time, the control of the pushing cylinder 34 is relatively simple, the opening angle of the furnace door 20 can be accurately controlled according to actual needs, and the flexibility and accuracy of the opening of the furnace door 20 are improved.

[0056] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A self-lubricating four-bar link door opening mechanism for a furnace door (20) characterized by, The utility model provides a kind of furnace body shell (10), furnace door (20) and drive assembly (30), the furnace body shell (10) is equipped with feeding opening, the furnace door (20) is equipped on the furnace body shell (10), for blocking the feeding opening, the drive assembly (30) is equipped on the furnace body shell (10), the drive assembly (30) is connected with furnace door (20), for driving furnace door (20) to move upwards.

2. The self-lubricating quadrilateral link door opening mechanism of a furnace door (20) according to claim 1, characterized in that, The furnace body shell (10) is equipped with two fixed seats (11), two the fixed seats (11) are located on the both sides of furnace door (20), the fixed seat (11) is connected with upper connecting rod (40) and lower connecting rod (50), the upper connecting rod (40) includes middle beam (41) and two upper swing arms (42), the middle beam (41) is horizontally arranged, and located between two the fixed seats (11), the drive assembly (30) is connected with middle beam (41), two the upper swing arms (42) are located at the both ends of middle beam (41), one end of the upper swing arm (42) is rotatably connected with the end of middle beam (41), and the other end is rotatably connected on the fixed seat (11). The lower connecting rod (50) includes counterweight pin shaft (51) and two connecting rods (52), the furnace door (20) is fixed with mounting block (21), the counterweight pin shaft (51) is inserted in mounting block (21), the counterweight pin shaft (51) is parallel with middle beam (41), and located below the middle beam (41), two the connecting rods (52) are located at the both ends of counterweight pin shaft (51), and one end of the connecting rod (52) away from counterweight pin shaft (51) is hinged on the fixed seat (11).

3. The self-lubricating quadrilateral link door opening mechanism of claim 2, wherein, The drive assembly (30) includes chain (31) and lifting lug (32), the lifting lug (32) is fixed on the top of furnace door (20), the furnace body shell (10) is equipped with motor speed reduction mechanism (12), the motor speed reduction mechanism (12) is located above furnace door (20), the motor speed reduction mechanism (12) is connected with winding roller (121), the motor speed reduction mechanism (12) is used to drive winding roller (121) to rotate, one end of chain (31) is fixed on winding roller (121), and the other end is connected with lifting lug (32), when the winding roller (121) rotates, chain (31) is wound on winding roller (121), and the middle part of middle beam (41) is rotatably connected on lifting lug (32).

4. The self-lubricating quadrilateral link door opening mechanism of claim 3, wherein, The upper swing arm (42) is connected with a limiting assembly (60) for controlling the rotation angle of the upper swing arm (42), the limiting assembly (60) comprises a support (61) and two swing rods (62), the support (61) is fixed on the bottom of the furnace body shell (10), a sliding groove (611) is formed in the side wall of the support (61), the sliding groove (611) is arranged in the vertical direction, and the bottom end of the sliding groove (611) is inclined away from the furnace body shell (10), the two swing rods (62) correspond to the upper swing arm (42) one by one, one end of the swing rod (62) is hinged in the middle of the upper swing arm (42), the other end is inserted into the sliding groove (611) and can move in the sliding groove (611).

5. The self-lubricating quadrilateral link door opening mechanism of claim 4, wherein, A roller (70) is arranged on the support (61), the roller (70) is arranged horizontally, the end of the roller (70) penetrates the sliding groove (611) and can move in the sliding groove (611), a plurality of positioning holes (621) are arranged on the side wall of the swing rod (62), the plurality of positioning holes (621) are uniformly distributed along the length direction of the swing rod (62), and the end of the roller (70) is inserted into the positioning hole (621).

6. The self-lubricating quadrilateral link door opening mechanism of a furnace door (20) according to claim 1, characterized in that, A smoke hood (13) is arranged on the furnace body shell (10), the smoke hood (13) is located above the furnace door (20), the top of the smoke hood (13) is communicated with a flue gas passage (131), the flue gas passage (131) is provided with an exhaust valve (1311), and a filtering and cleaning assembly (80) is arranged in the smoke hood (13).

7. The self-lubricating quadrilateral link door opening mechanism of a furnace door (20) according to claim 6, characterized in that, The filtering and cleaning assembly (80) comprises an upper filter plate (81) and a lower filter plate (82), the upper filter plate (81) is arranged on the top of the smoke hood (13) and covers the top opening of the smoke hood (13), the lower filter plate (82) is arranged on the bottom of the smoke hood (13) and covers the bottom opening of the smoke hood (13), the upper filter plate (81) comprises a mounting frame (811) and a plurality of mounting plates (812), the peripheral side of the mounting frame (811) is attached to the inner wall of the smoke hood (13), and the plurality of mounting plates (812) are arranged in sequence along the length direction of the mounting frame (811) and horizontally, one side of the mounting plate (812) is hinged on the mounting plate (812), and the other side is connected with the mounting plate (812) through a mounting spring (813); The lower filter plate (82) comprises a connecting frame (821) and a plurality of connecting plates (822), the peripheral side of the connecting frame (821) is attached to the inner wall of the smoke hood (13), and the plurality of connecting plates (822) are arranged in sequence along the length direction of the connecting frame (821) and horizontally, one side of the connecting plate (822) is hinged on the connecting frame (821), and the other side is connected with the connecting frame (821) through a connecting spring (823); The smoke hood (13) is provided with a moving assembly (90), the moving assembly (90) is connected with the mounting frame (811) and the connecting frame (821), is used for driving the mounting frame (811) and the connecting frame (821) to be close to or away from each other, the mounting plate (812) and the connecting plate (822) are staggered, and the upper filter plate (81) can pass through the lower filter plate (82).

8. The self-lubricating quadrilateral link door opening mechanism of claim 7, wherein, The moving assembly (90) comprises a moving gear (91) and two moving racks (92), the moving gear (91) is rotatably connected on the smoke hood (13), the moving racks (92) are vertically arranged, and the moving racks (92) are slidably connected on the smoke hood (13), the moving gear (91) is located between the two moving racks (92), the moving gear (91) is engaged with the moving racks (92), the moving gear (91) rotates, and is used for driving the two moving racks (92) to be close to or away from each other, one of the moving racks (92) is connected with the mounting frame (811), and the other moving rack (92) is connected with the connecting frame (821).

9. The self-lubricating quadrilateral link door opening mechanism of claim 2, wherein, The driving assembly (30) comprises a stretching cylinder (33), the stretching cylinder (33) is arranged on the furnace body shell (10) through the mounting rod (14), the output end of the stretching cylinder (33) is connected with the upper swing arm (42), and the stretching cylinder (33) is located above the furnace door (20); when the stretching cylinder (33) is contracted, the upper swing arm (42) is driven to rotate.

10. The self-lubricating quadrilateral link door opening mechanism of claim 2, wherein, The driving assembly (30) comprises a pushing cylinder (34), the pushing cylinder (34) is arranged on the furnace body shell (10), the output end of the pushing cylinder (34) is connected with the upper swing arm (42), and when the pushing cylinder (34) is stretched out, the upper swing arm (42) is driven to rotate.

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