A sintering kiln

Abstract

The present application provides a sintering kiln, which belongs to the technical field of lithium iron phosphate powder production. The kiln includes: a roller conveyor, on which a first furnace body and a second furnace body are provided, and guide portions are provided on both sides of the roller conveyor; a baffle provided on the guide portion for resisting a sagger; a stirring mechanism provided between the first furnace body and the second furnace body, including a mounting plate mounted above the roller conveyor and movable along its length, a stirring rod vertically and slidably penetrated on the mounting plate, a stirring paddle is provided at the lower end of the stirring rod, and a limit portion is provided on the stirring rod, the limit portion being located above the stirring paddle; a dust cover with an opening at the bottom, a cover formed on the outer edge of the bottom of the dust cover, a stirring rod slidably penetrated through the top of the dust cover, and a limit portion is located below the top of the dust cover; and a driving unit provided on the mounting plate for driving the stirring rod to move along its axial direction and rotate around its axial direction. The sintering kiln can quickly remove moisture from lithium iron phosphate powder, improve overall sintering efficiency, and have low energy consumption costs.

Description

Technical Field

[0001] The present application belongs to the technical field of lithium iron phosphate powder production, and in particular relates to a sintering kiln. Background Art

[0002] Lithium iron phosphate powder is the positive electrode material for lithium iron phosphate batteries. It is formed by mixing, stirring, coarse grinding, fine grinding, impurity removal, drying, sintering, crushing, and screening of phosphorus, iron, and lithium sources. The sintering process mainly involves packaging the spray-dried lithium iron phosphate powder into saggers, which are then sent to a roller kiln for sintering. However, saggers are generally cylindrical containers with an open top. The lithium iron phosphate powder is piled up inside the saggers, and the powder is heated unevenly, resulting in inconsistent moisture content in different parts of the powder. In particular, the moisture at the bottom has difficulty evaporating during the process. If the moisture in the powder needs to be completely removed, the sintering time of the powder in the roller kiln needs to be extended, which is not conducive to improving the overall sintering efficiency. In addition, track kilns are generally electrically heated, which leads to higher energy consumption costs. Summary of the Invention

[0003] In order to address the above-mentioned deficiencies in the prior art, the present application provides a sintering kiln that can quickly remove moisture from lithium iron phosphate powder, improve the overall sintering efficiency, and have lower energy consumption costs.

[0004] In order to achieve the above object, the present invention adopts the following technologies:

[0005] A sintering kiln, comprising:

[0006] The roller conveyor is used to convey the saggers. The first furnace body and the second furnace body are arranged in sequence along the conveying direction on the roller conveyor for sintering the materials. A guide portion is provided on both sides of the roller conveyor, which is located between the first furnace body and the second furnace body and is used to arrange the saggers in sequence along the length direction of the roller conveyor during conveyance.

[0007] A blocking rod is provided on the guide portion and is used to block the sagger output from the first furnace body;

[0008] The stirring mechanism is provided between the first furnace body and the second furnace body, and includes a mounting plate mounted above the roller and moving along the length thereof, the moving speed of which is coordinated with the conveying speed of the roller, a stirring rod is vertically and slidably provided on the mounting plate, and a stirring paddle is provided at the lower end of the stirring rod; when the mounting plate moves to above the sagger supported by the stop bar, the stirring paddle is used to enter the interior of the sagger, and a limiting portion is provided on the stirring rod, and the limiting portion is located above the stirring paddle;

[0009] The dust cover has an opening at the bottom, and a cover body is formed on the outer edge of the bottom of the dust cover to match the opening at the top of the sagger. The stirring rod is slidably arranged on the top of the dust cover, and the limit portion is located below the top of the dust cover; when the top of the dust cover abuts the limit portion, the stirring paddle is located inside the dust cover;

[0010] The driving part is arranged on the mounting plate and is used for driving the stirring rod to move along its axial direction and rotate around its axial direction.

[0011] Furthermore, the guide part is plate-shaped and arranged along the length direction of the roller, the distance between the guide parts on both sides is equal to the diameter of the sagger, and one of the guide parts has a mounting hole running through the guide part along its width direction, and the baffle rod slides through the mounting hole.

[0012] Furthermore, there are multiple mounting holes, which are arranged in an array along the length direction of the guide part, the distance between each adjacent mounting holes is adapted to the diameter of the sagger, and each mounting hole is penetrated by a baffle; the number of mounting plates is equal to the number of baffles, and each mounting plate is arranged in an array along the length direction of the roller, the distance between each adjacent mounting plate is equal to the distance between each adjacent baffle, a stirring rod is slidably penetrated on each mounting plate, and a dust cover is slidably penetrated on each stirring rod; a discharging mechanism is provided at the outlet of the first furnace body for controlling the number of saggers output from the first furnace body; when the mounting plate moves to above the sagger blocked by the baffle, the stirring paddles are respectively used to enter the interior of the corresponding sagger.

[0013] The beneficial effects of the present invention are:

[0014] 1. The powder sintered by the first furnace body can be stirred by the setting of the stirring rod, stirring paddle and other components. The stirring paddle will break up and mix the accumulated lithium iron phosphate powder, increase the contact area between the powders, improve the heat distribution within the powders, and make the moisture ratio of the powders consistent. Then, after the powders enter the second furnace body, the moisture in the powders can be effectively and quickly removed, and the powders can quickly enter the middle stage of sintering, effectively improving the sintering rate of lithium iron phosphate powders and reducing energy consumption costs.

[0015] 2. Through the arrangement of the dust cover and the stirring rod and the coordination between the cover and the opening of the sagger, the cover can completely cover the opening of the sagger when the stirring paddle is stirring the powder in the sagger, effectively preventing the powder stirred by the stirring paddle from overflowing from the sagger;

[0016] 3. After the mixing is completed, the stirring paddle can be placed in the dust cover with the opening of the sagger closed. As the stirring rod rotates, the powder attached to the stirring paddle will be thrown off and fall back into the sagger to avoid the stirring paddle bringing out part of the powder and scattering it everywhere, resulting in material waste and affecting the health of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the kiln in the embodiment of the present application.

[0018] Figure 2 This is a cross-sectional view of the entire kiln when the mounting plate is located above the sagger in the embodiment of the present application.

[0019] Figure 3 This is a cross-sectional view of the entire kiln when the stirring paddle is completely located inside the sagger according to an embodiment of the present application.

[0020] Figure 4 It is a structural diagram of the guide part implemented in this application.

[0021] Figure 5 yes Figure 2 A magnified view of the part B in the middle.

[0022] Figure 6 yes Figure 3 Enlarged view of the part C in the middle.

[0023] Figure 7 yes Figure 4 Developed view of the middle D part.

[0024] Figure 8 yes Figure 1 A magnified view of the part in center A.

[0025] Reference numerals: 1- roller, 11- conveying roller, 12- guide part, 13- first furnace body, 14- second furnace body, 15- matching groove, 16- door frame, 161- first support plate, 17- rotating shaft, 18- lever, 181- ratchet, 182- elastic member, 2- sagger, 3- stop rod, 31- mounting hole, 32- ratchet bar, 33- second support plate, 34- spring, 35- support rod, 36- main Shaft, 37-cam, 38-second motor, 4-stirring mechanism, 41-mounting plate, 42-stirring rod, 43-stirring paddle, 44-limiting part, 45-pressing block, 5-dust cover, 51-cover, 6-driving part, 61-first linear mechanism, 62-movable plate, 63-first motor, 64-pressing rod, 7-discharging mechanism, 71-second linear mechanism, 72-wheel frame, 73-guide wheel, 8-guide rail. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1

[0028] The embodiment of the present application provides a sintering kiln for stirring and sintering lithium iron phosphate powder, such as Figures 1 to 6 As shown, the kiln includes: a roller 1, a baffle 3, a stirring mechanism 4, a dust cover 5, a driving part 6, etc.

[0029] Among them, such as Figure 1 and Figure 2As shown, conveying rollers 11 are arranged in sequence on the roller 1 along its length direction for conveying the sagger 2. During conveying, the bottom of the sagger 2 is placed on the conveying roller 11 with the top opening facing upwards. The conveying rollers 11 are arranged in the width direction of the roller 1. Each conveying roller 11 is rotated around its own axis and is driven by a motor on the outside of the roller 1 in conjunction with a transmission shaft or chain. Guide parts 12 are provided on both sides of the roller 1 for arranging the sagger 2 in sequence along the length direction of the roller 1 during conveying. A first furnace body 13 and a second furnace body 14 are provided in sequence on the roller 1 along the conveying direction of the conveying roller 11. Electric heating rods are provided inside the first furnace body 13 and the second furnace body 14 for making the first furnace body 13 and the second furnace body 14 a high-temperature environment. The first furnace body 13 and the second furnace body 14 are arranged at a predetermined distance. A seal is provided on the roller 1 between the first furnace body 13 and the second furnace body 14 to keep the sagger 2 on the roller 1 always in the high-temperature gas.

[0030] like Figure 1 As shown, the blocking rod 3 is provided on the guide portion 12 and is used to block the sagger 2 output from the first furnace body 13 .

[0031] like Figure 2 、 Figure 3 、 Figure 5 As shown, the stirring mechanism 4 includes a mounting plate 41 mounted parallel to the roller conveyor 1. The mounting plate 41 is movable along the length of the roller conveyor 1. A stirring rod 42 is vertically and slidably penetrated on the mounting plate 41. A stirring paddle 43 is provided at the lower end of the stirring rod 42. The position of the stirring rod 42 matches the position of the sagger 2. That is, when the mounting plate 41 moves to the top of the sagger 2 supported by the blocking rod 3 and the axis of the stirring rod 42 passes through the center of the bottom surface of the sagger 2, the stirring rod 42 can move downward along its own axis, allowing the stirring paddle 43 to enter the interior of the sagger 2 to stir the lithium iron phosphate powder. A limit portion 44 is provided on the stirring rod 42, and the limit portion 44 is located above the stirring paddle 43.

[0032] like Figure 2 、 Figure 5 、 Figure 6 As shown, the dust cover 5 is cylindrical with an opening at the bottom. The outer edge of the bottom of the dust cover 5 extends toward its circumference to form a cover 51 that is adapted to the top opening of the sagger 2, that is, the cover 51 can completely cover the opening of the sagger 2. The stirring rod 42 is vertically and slidably penetrated at the center of the top of the dust cover 5, and the limiting portion 44 is located below the top of the dust cover 5; when the top of the dust cover 5 abuts the limiting portion 44, the stirring paddle 43 is located inside the dust cover 5.

[0033] like Figure 1 As shown, the driving part 6 includes a first linear mechanism 61 arranged on the mounting plate 41, and its movable end is connected to a movable plate 62 perpendicular to the mounting plate 41 and upwardly connected to the movable plate 62. The first linear mechanism 61 can be in the form of an electric push rod, a linear cylinder, etc. A first motor 63 is provided on the movable plate 62, and its driving end is connected to the stirring rod 42.

[0034] When applied, such as Figures 1 to 6 As shown, a plurality of saggers 2 are transported on the conveying roller 11 and are arranged in sequence along the length direction of the roller 1 under the action of the guide portion 12. Under the conveying action of the conveying roller 11, the saggers 2 enter the first furnace body 13 for high-temperature sintering and gradually move toward the exit of the first furnace body 13. The baffle 3 blocks the moving path of the sagger 2. The sagger 2 sent out from the exit of the first furnace body 13 abuts against the baffle 3, and the conveying roller 11 continues to rotate, so that the saggers 2 abut against each other.

[0035] like Figure 1 、 Figure 2 、 Figure 5 As shown, under the action of gravity, the top of the dust cover 5 abuts against the limit portion 44, the stirring paddle 43 is completely located inside the dust cover 5, and the mounting plate 41 moves along the length direction of the roller 1 to the top of the sagger 2 abutting against the blocking rod 3. The axis of the stirring rod 42 passes through the center of the bottom surface of the sagger 2, and then the first linear mechanism 61 contracts, driving the movable plate 62 to move downward, thereby driving the stirring rod 42 to move downward, and the dust cover 5 moves downward with the stirring rod 42.

[0036] like Figure 3 and Figure 6 As shown, during the downward movement of the stirring rod 42, the dust cover 5 stops moving downward because the cover body 51 abuts against the opening of the sagger 2, completely covering the opening of the sagger 2, and the stirring rod 42 continues to move downward until the stirring paddle 43 completely enters the sagger 2; the blocking rod 3 releases the resistance to the sagger 2, and the mounting plate 41 starts to move synchronously with the sagger 2 along the length direction of the roller 1 at a speed same as the conveying speed of the conveying roller 11 toward the entrance of the second furnace body 14, and the blocking rod 3 continues to block the conveyed sagger 2; during the synchronous movement of the mounting plate 41 and the sagger 2, the first motor 63 drives the stirring rod 42 to rotate around its own axis, so that the stirring paddle 43 stirs the lithium iron phosphate powder inside the sagger 2 and turns the powder evenly.

[0037] After the powder in the sagger 2 is evenly stirred, the stirring rod 42 stops rotating, the first linear mechanism 61 extends, and lifts the movable plate 62, thereby driving the stirring rod 42 to rise. Due to the action of gravity, the cover 51 at the bottom of the dust cover 5 still covers the opening of the sagger 2. When the limiting portion 44 abuts against the top of the dust cover 5, that is, the stirring paddle 43 is completely located in the dust cover 5, the first linear mechanism 61 stops extending, and the first motor 63 continues to drive the stirring rod 42 to rotate. Due to the rotation of the stirring rod 42, the lithium iron phosphate powder attached to the stirring paddle 43 is thrown off and falls back into the sagger 2. After that, the first linear mechanism 61 continues to drive the stirring rod 42 to rise, and at the same time, the limiting portion 44 also supports the dust cover 5 to rise together until the cover 51 is separated from the opening of the sagger 2.

[0038] After the cover 51 is separated from the sagger 2, the sagger 2 continues to be transported by the conveying roller 11 into the second furnace body 14 to continue sintering, and the mounting plate 41 returns to the exit of the first furnace body 13 along the length direction of the roller 1 to wait for stirring the powder in the next sagger 2. The cycle is repeated so that the powder in each sagger sent to the second furnace body 14 is stirred once.

[0039] After the lithium iron phosphate powder is spray-dried, it will be transported to the loading mechanism, which will load a certain amount of powder into the sagger 2. The sagger 2 enters the first furnace body 13 for sintering under the transportation of the conveying roller 11. Since the powder in the sagger 2 is in a piled state, the powder is heated unevenly during sintering. The moisture content of the powder in the middle or bottom is significantly higher than that of the powder at the top, that is, the sintering degree of the powder is inconsistent.

[0040] After being sintered in the first furnace body 13, the powder is sent to the second furnace body 14. During the transportation, the powder can be stirred by the arrangement of the stirring rod 42, the stirring paddle 43 and other components. The stirring paddle 43 breaks up and mixes the accumulated lithium iron phosphate powder, increases the contact area between the powders, improves the heat distribution in the powders, and makes the moisture ratio of the powders consistent. Thereafter, the stirred powder is sent to the second furnace body 14 by the conveying roller 11 for further sintering. Since the powder in the sagger 2 is evenly distributed and heated at this time, the moisture in the powder can be effectively and quickly removed under the high temperature heating of the second furnace body 14, and the powder can enter the subsequent sintering process more quickly, thereby effectively improving the overall sintering rate of the lithium iron phosphate powder and reducing energy consumption costs.

[0041] like Figure 2 and Figure 3 As shown, by the arrangement of the dust cover 5 and the stirring rod 42 and the cooperation of the cover 51 and the opening of the sagger 2, the stirring paddle 43 can completely cover the opening of the sagger 2 during the stirring of the powder in the sagger 2 by the cover 51, thereby effectively preventing the powder stirred up by the stirring paddle 43 from overflowing from the sagger 2; at the same time, after the stirring is completed, the stirring paddle 43 can be put into the dust cover 5 when the opening of the sagger 2 is closed, and the powder attached to the stirring paddle 43 is thrown off and falls back into the sagger 2 under the rotation of the stirring rod 42. If the dust cover 5 is not provided, after the stirring is completed, the stirring paddle 43 will bring out a part of the powder and scatter it everywhere, resulting in material waste. At the same time, the powder is scattered in the air, affecting the health of the operator. The provision of the dust cover 5 can effectively solve the above problems.

[0042] Specifically, such as Figure 1 and Figure 4As shown, the guide portion 12 is plate-shaped, and the two guide portions 12 are parallel to the roller 1 and arranged in the length direction of the roller 1. The distance between the two guide portions 12 is equal to the diameter of the sagger 2. A mounting hole 31 that penetrates the guide portion 12 is opened on the side of one of the guide portions 12 along its own width direction. The mounting hole 31 is arranged near the outlet of the first furnace body 13, and the baffle 3 slides along its own axis and penetrates into the mounting hole 31; when the front end of the baffle 3 extends out of the mounting hole 31, the sagger 2 can be blocked. When the baffle 3 retracts into the mounting hole 31, the sagger 2 continues to move under the action of the conveying roller 11.

[0043] Specifically, such as Figure 5 and Figure 6 As shown, the weight of the dust cover 5 and the cover body 51 should be increased as much as possible to avoid the stirring rod 42 lifting the dust cover 5 and the cover body 51 due to friction when the stirring rod 42 rises and the limit portion 44 does not abut the top of the dust cover 5, so that the dust cover 5 and the cover body 51 will become ineffective.

[0044] Preferably, when the stirring paddle 43 stirs in the sagger 2, the dust cover 5 and the cover 51 may shake due to the cooperation between the stirring rod 42 and the top of the dust cover 5, thereby failing to completely seal the opening of the sagger 2, thereby causing the powder to overflow. Figure 5 and Figure 6 As shown, a pressing block 45 can be provided on the stirring rod 42, and the pressing block 45 is located between the mounting plate 41 and the top of the dust cover 5; when the pressing block 45 abuts against the top of the dust cover 5, the stirring paddle 43 is completely located inside the sagger 2, and when the stirring rod 42 rotates, the pressing block 45 abuts against the top of the dust cover 5, which can effectively reduce the shaking of the dust cover 5 and the cover 51.

[0045] Preferably, since the pressing block 45 needs to abut against the top of the dust cover 5, the stirring rod 42 needs to rotate around its own axis, friction is generated between the pressing block 45 and the top of the dust cover 5, which may cause the stirring rod 42 to shake and increase the wear of the pressing block 45 and the top of the dust cover 5. Figure 6 As shown, the pressing block 45 can be set to a cone, with its tapered part facing downward, and the axis of the pressing block 45 is coaxially arranged with the axis of the stirring rod 42. Accordingly, a tapered groove adapted to the pressing block 45 needs to be opened downward at the center position of the top of the dust cover 5, with its tapered part facing downward. A plurality of retaining frames are provided in the tapered groove, and the retaining frames are arranged in a circular array around the stirring rod 42 and are tapered to match the groove surface of the tapered groove. Rollers adapted to the conical surface of the pressing block 45 are provided in the retaining frames. Through the contact between the rollers and the conical surface of the pressing block 45, it can be ensured that the pressing block 45 stably presses the dust cover 5 at the opening of the sagger 2, and can also effectively improve the stability of the rotation of the stirring rod 42. The same applies to the matching part between the stirring rod 42 and the mounting plate 41.

[0046] Example 2

[0047] As a further implementation of the above-mentioned embodiment 1, in order to improve the conveying efficiency of the sagger 2 and the stirring efficiency of the powder, a plurality of mounting holes 31 can be provided. In this embodiment, three mounting holes 31 are set as an example. The three mounting holes 31 are arranged in an array in the length direction of the guide portion 12, and the distance between each two adjacent mounting holes 31 is adapted to the diameter of the sagger 2. Each mounting hole 31 is penetrated by a baffle 3; the number of mounting plates 41 is three, and each mounting plate 41 is arranged in an array along the length direction of the roller 1, and the distance between each two adjacent mounting plates 41 is adapted to the distance between each two adjacent baffles 3. A stirring rod 42 is penetrated on each mounting plate 41, and a dust cover 5 is penetrated on each stirring rod 42; a discharging mechanism 7 is provided at the outlet of the first furnace body 13 for controlling the timing of outputting the sagger 2 from the first furnace body 13.

[0048] When applied, such as Figures 1 to 3 As shown, the discharging mechanism 7 intermittently outputs three saggers 2 from the first furnace body 13 in sequence, so that the three saggers 2 are transported to the second furnace body 14 at intervals. The front end of the blocking rod 3 at the far end of the first furnace body 13 first extends out of the mounting hole 31, thereby blocking the front end sagger 2 among the three saggers 2, and then the front end of the middle blocking rod 3 extends out to block the sagger 2 in the middle position, and then the front end of the last blocking rod 3 extends out to block the third sagger 2, and the three mounting plates 41 move synchronously to the top of the corresponding sagger 2, and the axis of each stirring rod 42 passes through the center of the bottom surface of the corresponding sagger 2. The stirring rod 42 on the mounting plate 41 descends until the stirring paddle 43 is located inside the sagger 2, and the cover 51 covers the opening of the sagger 2. Each baffle 3 is synchronously retracted into the mounting hole 31, and each mounting plate 41 moves synchronously with each sagger 2 toward the second furnace body 14, stirring the powder at the same time. While the mounting plate 41 moves synchronously with the sagger 2, the discharging mechanism 7 begins to discharge the sagger 2. When each mounting plate 41 returns from the second furnace body 14 to the first furnace body 13, the three saggers 2 have been blocked by the corresponding baffle 3, waiting for the stirring rod 42 on each mounting plate 41 to descend and continuously stir. Through the arrangement of multiple baffles 3, mounting plates 41 and other components and the cooperation of the discharging mechanism 7, the automatic arrangement of multiple saggers 2 can be achieved, and the continuity of sagger 2 transportation and powder stirring can be effectively improved, thereby improving the overall sintering efficiency and reducing energy consumption costs.

[0049] Specifically, such as Figure 1 As shown, the discharging mechanism 7 includes a second linear mechanism 71 provided on the guide portion 12 and located at the outlet of the first furnace body 13, the movable end of which faces the width direction of the guide portion 12 and is connected to a wheel frame 72, and a guide wheel 73 is rotatably provided on the wheel frame 72, and its rotation axis is perpendicular to the top surface of the guide portion 12. When the second linear mechanism 71 moves the guide wheel 73 between the two guide portions 12, it can resist the sagger 2. At the same time, when the guide wheel 73 moves, it can cooperate with the outer side of the cylindrical sagger 2 to avoid interference.

[0050] Specifically, such as Figures 1 to 3As shown, a guide rail 8 is provided above the roller 1, which is arranged in the length direction of the roller 1. Each mounting plate 41 is slidably fitted on the guide rail 8 along the length direction of the roller 1. The mounting plates 41 are connected to each other. The mounting plates 41 can be driven by a linear motor to ensure precise positioning between the stirring rod 42 and the sagger 2.

[0051] Example 3

[0052] As a further implementation of the above embodiment, Figure 4 、 Figure 7 、 Figure 8 As shown, three matching grooves 15 are provided on the top surface of the guide portion 12, and the matching grooves 15 are arranged in the width direction of the guide portion 12. Each matching groove 15 is respectively extended to the corresponding blocking rod 3, and a ratchet bar 32 arranged towards its own axis is formed on the side of the blocking rod 3, and the ratchet bar 32 moves and matches in the matching groove 15; a door frame 16 is mounted above the matching groove 15, and a first support plate 161 is provided below the top of the door frame 16. A rotating shaft 17 is provided on the top of the door frame 16, and its axis is facing the length direction of the guide portion 12. A shift rod 18 is rotatably matched on the rotating shaft 17, and the rotating shaft 17 is located between the two ends of the shift rod 18. A pawl 181 is formed at one end of the shift rod 18, and the other end of the shift rod 18 is connected to the first support plate 161 by an elastic member 182. In this embodiment, the elastic member 182 is in the form of a spring sheet, and the elastic member 182 is used to clamp the pawl 181 into the ratchet bar 32.

[0053] like Figure 4 As shown, a second support plate 33 is provided at the end of the blocking rod 3, and springs 34 are provided on both sides of the blocking rod 3. The spring 34 is arranged in the length direction of the blocking rod 3. One end of the spring 34 is connected to the second support plate 33, and the other end is connected to the other side of the guide part 12. When the spring 34 is in a natural state, the front end of the blocking rod 3 is located in the mounting hole 31. A plurality of support rods 35 are formed on the other side of the guide part 12. The support rods 35 are arranged in the width direction of the guide part 12. A main shaft 36 is provided at the rear of the blocking rod 3. The main shaft 36 is arranged in the length direction of the guide part 12 and passes through each support rod 35. The main shaft 36 is arranged to rotate around its own axis. A second motor 38 for driving the main shaft 36 to rotate is provided at one end of the guide part 12. A cam 37 is provided on the main shaft 36 at the rear of each blocking rod 3. The top end thereof is adapted to the rear end face of the blocking rod 3. Each cam 37 is deflected at a predetermined angle in sequence. As shown Figure 1 and Figure 8 As shown, a pressure rod 64 is provided on the movable plate 62 and is arranged perpendicular to the guide portion 12 ; when the stirring paddle 43 completely enters the interior of the sagger 2 , the pressure rod 64 is used to press down the other end of the lever 18 to disengage the pawl 181 from the ratchet bar 32 .

[0054] When in use, the three cams 37 can be deflected ninety degrees in sequence. When the second motor 38 rotates, the top ends of the three cams 37 will abut the rear ends of the three baffle rods 3 in sequence and push the three baffle rods 3 out of the mounting holes 31 from front to back, and the springs 34 are compressed. Due to the cooperation of the ratchet bar 32 and the pawl 181, the three baffle rods 3 are fixed to fix the three saggers 2; the stirring rod 42 descends with the movable plate 62, and when the cover body 51 covers the opening of the sagger 2 and the stirring paddle 43 enters the interior of the sagger 2, the lower end of the pressing rod 64 will press on the other end of the shift rod 18 as the movable plate 62 continues to descend. The shift rod 18 rotates, causing the pawl 181 to disengage from the ratchet bar 32, and the spring 34 is released, pulling the front end of the baffle rod 3 back into the mounting hole 31, thereby releasing the resistance to the sagger 2. Through the cooperation of the pressing rod 64 and the shifting rod 18, when the stirring paddle 43 enters the interior of the sagger 2, the three blocking rods 3 are simultaneously retracted into the mounting hole 31, thereby releasing the resistance to the sagger 2, which is beneficial to improving the synchronization of the movement of components such as the mounting plate 41 and the stirring rod 42 with the sagger 2, and improving the degree of automation of the transportation of the sagger 2, thereby improving the overall sintering efficiency.

[0055] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A sintering kiln, characterized in that: include: A roller conveyor (1) is used to convey the saggers (2), and a first furnace body (13) and a second furnace body (14) are sequentially arranged on the roller conveyor (1) along the conveying direction, for sintering materials; a guide portion (12) is provided on both sides of the roller conveyor (1), which is located between the first furnace body (13) and the second furnace body (14) and is used to arrange the saggers (2) in sequence along the length direction of the roller conveyor (1) when conveying; A blocking rod (3) is provided on the guide portion (12) and is used to block the sagger (2) output from the first furnace body (13); A stirring mechanism (4) is provided between the first furnace body (13) and the second furnace body (14), and comprises a mounting plate (41) mounted above the roller conveyor (1) and movable along its length direction, wherein the moving speed thereof is coordinated with the conveying speed of the roller conveyor (1), a stirring rod (42) is vertically and slidably provided on the mounting plate (41), and a stirring paddle (43) is provided at the lower end of the stirring rod (42); when the mounting plate (41) moves above the sagger (2) supported by the stop rod (3), the stirring paddle (43) is used to enter the interior of the sagger (2), and a limiting portion (44) is provided on the stirring rod (42), and the limiting portion (44) is located above the stirring paddle (43); The dust cover (5) has an opening at the bottom, and a cover (51) is formed on the outer edge of the bottom of the dust cover (5) to match the opening at the top of the sagger (2). The stirring rod (42) is slidably arranged on the top of the dust cover (5), and the limiting portion (44) is located below the top of the dust cover (5); when the top of the dust cover (5) abuts against the limiting portion (44), the stirring paddle (43) is located inside the dust cover (5); The driving portion (6) is provided on the mounting plate (41) and is used to drive the stirring rod (42) to move along its axial direction and rotate around its axial direction.

2. A sintering kiln according to claim 1, characterized in that: The guide portion (12) is plate-shaped and arranged along the length direction of the roller (1). The distance between the guide portions (12) on both sides is equal to the diameter of the sagger (2). A mounting hole (31) penetrating the guide portion (12) is opened on the side surface of one of the guide portions (12) along its width direction, and the blocking rod (3) is slidably inserted into the mounting hole (31).

3. A sintering kiln according to claim 2, characterized in that: There are a plurality of mounting holes (31), which are arranged in an array along the length direction of the guide portion (12), the distance between each two adjacent mounting holes (31) is adapted to the diameter of the sagger (2), and each mounting hole (31) is penetrated by a baffle (3); the number of mounting plates (41) is equal to the number of baffles (3), and each mounting plate (41) is arranged in an array along the length direction of the roller (1), the distance between each two adjacent mounting plates (41) is equal to the distance between each two adjacent baffles (3), a stirring rod (42) is slidably penetrated on each mounting plate (41), and a dust cover (5) is slidably penetrated on each stirring rod (42); a discharging mechanism (7) is provided at the outlet of the first furnace body (13), which is used to control the number of saggers (2) output from the first furnace body (13); when the mounting plate (41) moves to above the sagger (2) blocked by the baffle (3), the stirring paddles (43) are respectively used to enter the interior of the corresponding sagger (2).

4. A sintering kiln according to claim 3, characterized in that: The top surface of the guide portion (12) is provided with a plurality of matching grooves (15) parallel to the mounting holes (31), and the matching grooves (15) are respectively extended to the corresponding mounting holes (31). A ratchet bar (32) is formed on the side of the blocking rod (3), and the ratchet bar (32) moves and matches in the matching groove (15); a door frame (16) is mounted above the matching groove (15), and the top of the door frame (16) is rotatably connected to a shifting rod (18) through a rotating shaft (17). A pawl (181) is formed at one end of the shifting rod (18), and the other end is connected to the door frame (16) through an elastic member (182). The elastic member (182) is always in a compressed state and is used to drive the pawl (181) to rotate downward to cooperate with the ratchet bar (32) to lock the blocking rod (3).

5. The sintering kiln according to claim 4, characterized in that: A second support plate (33) is provided at the end of the blocking rod (3), and springs (34) are provided on both sides of the blocking rod (3). The springs (34) are arranged in the length direction of the blocking rod (3), one end of the spring (34) is connected to the second support plate (33), and the other end is connected to the other side surface of the guide portion (12). When the spring (34) is in a natural state, the front end of the blocking rod (3) is inserted into the mounting hole (31).

6. The sintering kiln according to claim 5, characterized in that: A plurality of support rods (35) are formed on the other side of the guide portion (12), and the support rods (35) are arranged in the width direction of the guide portion (12). A main shaft (36) is provided at the rear of the blocking rod (3), and the main shaft (36) is oriented in the length direction of the guide portion (12) and is passed through each support rod (35). A cam (37) is provided on the main shaft (36) at the rear of each blocking rod (3), and its top end is adapted to the rear end face of the blocking rod (3). Each cam (37) is deflected and arranged at a predetermined angle in sequence.

7. The sintering kiln according to claim 4, characterized in that: The movable plate (62) is provided with a pressure rod (64) arranged perpendicular to the guide portion (12); when the stirring paddle (43) completely enters the interior of the sagger (2), the pressure rod (64) is used to press down the other end of the lever (18) to disengage the ratchet (181) from the ratchet bar (32).

8. The sintering kiln according to claim 1, characterized in that: A pressing block (45) is provided on the stirring rod (42), and the pressing block (45) is located between the mounting plate (41) and the top of the dust cover (5); when the pressing block (45) abuts against the top of the dust cover (5), the stirring paddle (43) is located inside the sagger (2).

9. The sintering kiln according to claim 3, characterized in that: The discharge mechanism (7) includes a second linear mechanism (71) provided on the guide portion (12) and located at the outlet of the first furnace body (13), wherein the movable end of the second linear mechanism (71) faces the width direction of the guide portion (12) and is connected to a wheel frame (72), and a guide wheel (73) is rotatably provided on the wheel frame (72), and the rotation axis of the guide wheel (73) is perpendicular to the top surface of the guide portion (12).

10. The sintering kiln according to claim 3, characterized in that: A guide rail (8) is mounted above the roller (1) and is arranged in the longitudinal direction of the roller (1). Each mounting plate (41) is slidably fitted on the guide rail (8) along the longitudinal direction of the roller (1), and each mounting plate (41) is connected to each other.

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