Sintering kiln

Abstract

The invention provides a sintering kiln, and belongs to the technical field of lithium iron phosphate powder production.The kiln comprises a roller way, a first furnace body and a second furnace body are arranged on the roller way, and guide parts are arranged on the two sides of the roller way; the stop lever is arranged on the guide part and is used for stopping the saggar; the stirring mechanism is arranged between the first furnace body and the second furnace body and comprises a mounting plate which is erected above the roller way and moves in the length direction of the roller way, a stirring rod is vertically and slidably arranged on the mounting plate in a penetrating manner, a stirring paddle is arranged at the lower end part of the stirring rod, a limiting part is arranged on the stirring rod, and the limiting part is located above the stirring paddle; the bottom of the dustproof cover is open, a cover body is formed on the outer edge of the bottom of the dustproof cover, the stirring rod slidably penetrates through the top of the dustproof cover, and the limiting part is located below the top of the dustproof cover; and the driving part is arranged on the mounting plate and is used for driving the stirring rod to move along the axial direction and rotate around the axial direction. The sintering kiln can quickly remove moisture in the lithium iron phosphate powder, improves the overall sintering efficiency, and has low energy consumption cost at the same time.

Description

Technical Field

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

[0002] Lithium iron phosphate powder is the positive electrode material of lithium iron phosphate battery. It is formed by mixing, coarse grinding, fine grinding, impurity removal, drying, sintering, crushing, screening and other processes of phosphorus source, iron source, lithium source and other materials. Among them, the sintering process mainly packs the spray-dried lithium iron phosphate powder into a sagger, and then sends the sagger into a roller kiln for sintering. However, the sagger is generally a cylindrical container with an open top. The lithium iron phosphate powder is piled up in the sagger, and the powder is heated unevenly, resulting in inconsistent moisture content in various parts of the powder. In particular, the moisture at the bottom has a problem of poor discharge during evaporation and discharge. If the moisture in the powder needs to be completely removed, it is necessary to extend the sintering time of the powder in the roller kiln, which is not conducive to improving the overall sintering efficiency. In addition, the track kiln is generally electrically heated, which will lead to higher energy consumption costs. Summary of the invention

[0003] In order to solve the above-mentioned deficiencies of the prior art, the present application provides a sintering kiln, which 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: A sintering kiln, comprising: 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 materials. A guide part is arranged 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 when conveying. A blocking rod is provided on the guide portion and is used to block the sagger output from the first furnace body; The stirring mechanism is arranged between the first furnace body and the second furnace body, and comprises a mounting plate mounted above the roller and moving along the length direction thereof, and its moving speed is matched with the conveying speed of the roller, and a stirring rod is vertically and slidably penetrated through the mounting plate, and a stirring paddle is arranged at the lower end of the stirring rod; when the mounting plate moves to the top of the sagger blocked by the blocking rod, the stirring paddle is used to enter the interior of the sagger, and a limiting portion is arranged on the stirring rod, and the limiting portion is located above the stirring paddle; The dust cover has an opening at the bottom, and a cover body matching the opening at the top of the sagger is formed at the outer edge of the bottom of the dust cover. The stirring rod is slidably arranged on the top of the dust cover, and the limiting part is located below the top of the dust cover. When the top of the dust cover abuts against the limiting part, the stirring paddle is located inside the dust cover; 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.

[0005] 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 a mounting hole penetrating the guide part is opened on the side of one guide part along its width direction, and the baffle rod is slidably inserted into the mounting hole.

[0006] Furthermore, there are multiple mounting holes, which are arranged in an array along the length direction of the guide portion, the distance between each two adjacent mounting holes is adapted to the diameter of the sagger, and each mounting hole is penetrated by a baffle rod; the number of mounting plates is equal to the number of baffle rods, and each mounting plate is arranged in an array along the length direction of the roller table, the distance between two adjacent mounting plates is equal to the distance between two adjacent baffle rods, a stirring rod is slidably penetrated by each mounting plate, and a dust cover is slidably penetrated by each stirring rod; a discharging mechanism is provided at the outlet of the first furnace body for controlling the number of saggers outputted from the first furnace body; when the mounting plate moves to above the sagger blocked by the baffle rod, the stirring paddles are respectively used to enter the corresponding saggers.

[0007] The beneficial effects of the present invention are: 1. The powder sintered by the first furnace body can be stirred by setting up the stirring rod, stirring paddle and other components. The stirring paddle will disperse and mix the accumulated lithium iron phosphate powder, increase the contact area between the powders, improve the heat distribution in the powders, make the moisture ratio of the powders consistent, and then after the powders enter the second furnace body, the moisture in the powders can be effectively and quickly removed, and quickly enter the middle stage of sintering, which effectively improves the sintering rate of lithium iron phosphate powder and reduces energy consumption costs; 2. Through the arrangement of the dust cover and the stirring rod and the cooperation between the cover and the opening of the sagger, when the stirring paddle is stirring the powder in the sagger, the cover can completely cover the opening of the sagger, which can effectively prevent the powder stirred up by the stirring paddle from overflowing from the sagger; 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 prevent the stirring paddle from taking out part of the powder and scattering it everywhere, resulting in material waste and affecting the health of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the main structure of the kiln in the embodiment of the present application.

[0009] Figure 2 This is an overall cross-sectional view of the kiln when the mounting plate of the embodiment of the present application is located above the sagger.

[0010] Figure 3 This is an overall cross-sectional view of the kiln when the stirring paddle is completely located inside the sagger according to the embodiment of the present application.

[0011] Figure 4 It is a structural schematic diagram of the guide part implemented in this application.

[0012] Figure 5 yes Figure 2 A magnified view of the part B in the figure.

[0013] Figure 6 yes Figure 3 A magnified view of the section C in the middle.

[0014] Figure 7 yes Figure 4 Developed view of the middle D part.

[0015] Figure 8 yes Figure 1 A magnified view of the part in the figure.

[0016] Figure 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-rotation shaft, 18-shift 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

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes 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.

[0018] Example 1 The present application embodiment provides a sintering kiln for stirring and sintering lithium iron phosphate powder. Figure 1 to Figure 6 As shown, the kiln includes: a roller table 1, a baffle 3, a stirring mechanism 4, a dust cover 5, a driving part 6, etc.

[0019] Among them, 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 toward the width direction of the roller 1. Each conveying roller 11 is rotatably arranged 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 present 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.

[0020] like Figure 1 As shown, the blocking rod 3 is arranged on the guide portion 12 to block the sagger 2 output from the first furnace body 13 .

[0021] like Figure 2 , Figure 3 , Figure 5 As shown, the stirring mechanism 4 includes a mounting plate 41 mounted parallel to the roller 1, the mounting plate 41 is arranged to move along the length direction of the roller 1, a stirring rod 42 is vertically and slidably penetrated on the mounting plate 41, a stirring paddle 43 is arranged at the lower end of the stirring rod 42, and 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 blocked 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 down along its own axis, so that the stirring paddle 43 enters the interior of the sagger 2 to stir the lithium iron phosphate powder. A limiting portion 44 is provided on the stirring rod 42, and the limiting portion 44 is located above the stirring paddle 43.

[0022] like Figure 2 , Figure 5 , Figure 6 As shown, the dust cover 5 is cylindrical and has an opening at the bottom. The outer edge of the bottom of the dust cover 5 extends toward its circumference to form a cover body 51 that is adapted to the top opening of the sagger 2, that is, the cover body 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 against the limiting portion 44, the stirring paddle 43 is located inside the dust cover 5.

[0023] like Figure 1 As shown, the driving part 6 includes a first linear mechanism 61 arranged on the mounting plate 41, and a movable end thereof is connected to a movable plate 62 perpendicularly to the mounting plate 41 and upwardly. 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 a driving end thereof is connected to the stirring rod 42.

[0024] When applied, such as Figure 1 to Figure 6 As shown, a plurality of saggers 2 are transported on a conveying roller 11, and are arranged in sequence along the length direction of the roller table 1 under the action of a guide portion 12. Under the transporting 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. A baffle 3 blocks the moving path of the saggers 2, and the saggers 2 sent out from the exit of the first furnace body 13 abut against the baffle 3, while the conveying roller 11 continues to rotate, so that the saggers 2 abut against each other.

[0025] 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, and the axis of the stirring rod 42 passes through the center of the bottom surface of the sagger 2. 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.

[0026] 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 and completely covers 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 table 1 at a speed equal to 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 to evenly turn the powder inside.

[0027] After the powder in the sagger 2 is evenly stirred, the stirring rod 42 stops rotating, the first linear mechanism 61 extends, lifts the movable plate 62, and thus drives the stirring rod 42 to rise. Due to the effect of gravity, the cover body 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 body 51 is separated from the opening of the sagger 2.

[0028] After the cover body 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 table 1 to wait for stirring the powder in the next sagger 2, and the cycle is repeated so that the powder in each sagger sent to the second furnace body 14 is stirred once.

[0029] 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 stacked 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.

[0030] During the transportation of the powder sent to the second furnace body 14 after sintering in the first furnace body 13, the powder can be stirred by means of the stirring rod 42, the stirring paddle 43 and other components. The stirring paddle 43 breaks up and mixes the lithium iron phosphate powder in a stacked state, thereby increasing the contact area between the powders and improving the heat distribution in the powders, so that the moisture ratio of the powders is consistent. The stirred powder is then sent to the second furnace body 14 by the conveying roller 11 for further sintering. At this time, the powder in the sagger 2 is evenly distributed and heated evenly. Under the high temperature heating of the second furnace body 14, the moisture in the powder can be effectively and quickly removed, and the powder can enter the subsequent sintering process more quickly, thereby effectively increasing the overall sintering rate of the lithium iron phosphate powder and reducing the energy consumption cost.

[0031] like Figure 2 and Figure 3 As shown, by setting the dust cover 5 and the stirring rod 42 and cooperating the cover body 51 with the opening of the sagger 2, the cover body 51 can completely cover the opening of the sagger 2 during the stirring of the powder in the sagger 2 by the stirring paddle 43, which can effectively prevent 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 enter 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 take out a part of the powder and scatter it everywhere, resulting in waste of materials. 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.

[0032] Specifically, Figure 1 and Figure 4As shown, the guide portion 12 is plate-shaped, 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, and a mounting hole 31 penetrating the guide portion 12 is opened on the side of one of the guide portions 12 along its width direction, the mounting hole 31 is arranged near the outlet of the first furnace body 13, and the blocking rod 3 is slidably penetrated in the mounting hole 31 along its own axis; when the front end of the blocking rod 3 extends out of the mounting hole 31, the sagger 2 can be blocked, and when the blocking rod 3 retracts into the mounting hole 31, the sagger 2 continues to move under the action of the conveying roller 11.

[0033] Specifically, 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 prevent the stirring rod 42 from 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.

[0034] 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, so that the opening of the sagger 2 cannot be completely sealed, 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 body 51.

[0035] 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 portion facing downward, and the axis of the pressing block 45 is coaxially arranged with the axis of the stirring rod 42. Correspondingly, 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 portion facing downward. A plurality of retaining frames are arranged in a circular array around the stirring rod 42 and are in a cone adapted to the groove surface of the tapered groove. A roller adapted to the tapered surface of the pressing block 45 is arranged in the retaining frame. Through the contact between the roller and the tapered surface of the pressing block 45, it can be ensured that the pressing block 45 can stably press 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 is true for the matching part of the stirring rod 42 and the mounting plate 41.

[0036] Example 2 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, and 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 table 1, and the distance between each two adjacent mounting plates 41 is adapted to the distance between two adjacent baffle bars 3, and each mounting plate 41 is penetrated by a stirring rod 42, and each stirring rod 42 is penetrated by a dust cover 5; the outlet of the first furnace body 13 is provided with a discharging mechanism 7, which is used to control the timing of the first furnace body 13 outputting the sagger 2.

[0037] When applied, such as Figure 1~Figure 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, and the front end of the blocking rod 3 far from the first furnace body 13 first extends out of the mounting hole 31, thereby blocking the front end sagger 2 of 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, respectively. The stirring rod 42 on the mounting plate 41 descends until the stirring paddle 43 is located in the sagger 2, the cover 51 covers the opening of the sagger 2, and each baffle 3 is synchronously retracted into the mounting hole 31. Each mounting plate 41 moves synchronously with each sagger 2 to the second furnace body 14, and stirs the powder at the same time; while the mounting plate 41 moves synchronously with the sagger 2, the discharging mechanism 7 starts to output 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 baffles 3, respectively, waiting for the stirring rods 42 on each mounting plate 41 to descend, and stir continuously. 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 realized, and the continuity of the sagger 2 conveying and powder stirring can be effectively improved, thereby improving the overall sintering efficiency and reducing energy consumption costs.

[0038] Specifically, Figure 1 As shown, the discharging mechanism 7 includes a second linear mechanism 71 arranged on the guide portion 12 and located at the exit 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, on which a guide wheel 73 is rotatably provided, 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, the sagger 2 can be resisted, and 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.

[0039] Specifically, Figure 1~Figure 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 accurate positioning between the stirring rod 42 and the sagger 2.

[0040] Example 3 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 connected to the corresponding blocking rod 3, and a ratchet bar 32 arranged in the direction of 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 arranged above the matching groove 15, and a first support plate 161 is arranged below the top of the door frame 16, and a rotating shaft 17 is arranged on the top of the door frame 16, and its axis faces the length direction of the guide portion 12, and a lever 18 is rotatably matched on the rotating shaft 17, and the rotating shaft 17 is located between the two ends of the lever 18, and a pawl 181 is formed at one end of the lever 18, and the other end of the lever 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.

[0041] like Figure 4 As shown, a second support plate 33 is provided at the end of the baffle rod 3, and springs 34 are provided on both sides of the baffle rod 3. The spring 34 is arranged in the length direction of the baffle 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 portion 12; when the spring 34 is in a natural state, the front end of the baffle rod 3 is located in the mounting hole 31. 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 baffle rod 3. The main shaft 36 is arranged in the length direction of the guide portion 12 and penetrates 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 portion 12. A cam 37 is provided on the main shaft 36 at the rear of each baffle rod 3, and its top end is adapted to the rear end face of the baffle rod 3. Each cam 37 is arranged to deflect 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 .

[0042] 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 against 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 in sequence, 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 be pressed on the other end of the shifting rod 18 as the movable plate 62 continues to descend, and the shifting rod 18 rotates to disengage the pawl 181 from the ratchet bar 32, and the spring 34 is released to pull 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 pressure rod 64 and the lever 18, when the stirring paddle 43 enters the interior of the sagger 2, the three blocking rods 3 are simultaneously retracted into the mounting holes 31, thereby releasing the resistance to the sagger 2, which is beneficial to improving the synchronization of the movement of the mounting plate 41, the stirring rod 42 and other components with the sagger 2, and improving the degree of automation of the transportation of the sagger 2, thereby improving the overall sintering efficiency.

[0043] 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 arranged in sequence along the conveying direction on the roller conveyor (1) at intervals, and are used to sinter materials; guide parts (12) are provided on both sides of the roller conveyor (1), and are located between the first furnace body (13) and the second furnace body (14), and are 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); The stirring mechanism (4) is arranged 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 the length direction thereof, wherein the moving speed thereof matches the conveying speed of the roller conveyor (1), a stirring rod (42) is vertically and slidably penetrated through the mounting plate (41), and a stirring paddle (43) is arranged at the lower end of the stirring rod (42); when the mounting plate (41) moves to the top of the sagger (2) blocked by the stopper (3), the stirring paddle (43) is used to enter the interior of the sagger (2), and a limiting portion (44) is arranged 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 body (51) matching the opening at the top of the sagger (2) is formed at the outer edge of the bottom of the dust cover (5). 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 part (6) is arranged 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 is arranged along the length direction of the roller conveyor (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. The blocking rod (3) is slidably arranged in 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 blocking rod (3); the number of mounting plates (41) is equal to the number of blocking rods (3); each mounting plate (41) is arranged in an array along the length direction of the roller table (1); the distance between two adjacent mounting plates (41) is equal to the distance between two adjacent blocking rods (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) for controlling 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 blocking rod (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 connected 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) is movably matched in the matching groove (15). A door frame (16) is mounted above the matching groove (15), and a lever (18) is rotatably connected to the top of the door frame (16) via a rotating shaft (17). A ratchet (181) is formed at one end of the lever (18), and the other end is connected to the door frame (16) via an elastic member (182). The elastic member (182) is always in a compressed state and is used to drive the ratchet (181) to rotate downward to cooperate with the ratchet bar (32) to lock the blocking rod (3).

5. A 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 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 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. A 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 arranged behind the blocking rod (3), and the main shaft (36) is arranged in the length direction of the guide portion (12) and penetrates each support rod (35). A cam (37) is arranged on the main shaft (36) behind each blocking rod (3), and the top end of the cam (37) is adapted to the rear end surface of the blocking rod (3). Each cam (37) is arranged to be deflected at a predetermined angle in sequence.

7. The sintering furnace 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 pawl (181) from the ratchet bar (32).

8. The sintering furnace 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 furnace according to claim 3, characterized in that: The discharge mechanism (7) comprises a second linear mechanism (71) disposed on the guide portion (12) and located at the exit 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 the rotation axis of the guide wheel (73) is perpendicular to the top surface of the guide portion (12).

10. The sintering furnace according to claim 3, characterized in that: A guide rail (8) is mounted above the roller (1) and 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), and each mounting plate (41) is connected to each other.

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