Discharging method of push plate furnace

Abstract

The invention discloses a discharging method of a push plate furnace, which belongs to the technical field of reduction furnace application, and comprises the following steps of: during discharging, forming forward centrifugal force F1 on material boxes which are longitudinally and tightly arranged in the push plate furnace, and applying forward thrust F2 to the material boxes in the push plate furnace by a push rod of a push rod device at the same time, and the material box in the push plate furnace passes through the furnace tube from back to front under the combined action of the centrifugal force F1 and the thrust F2. The discharging method comprises the steps that a rotating disc capable of rotating around the circle center of the rotating disc is arranged in front of a warehouse, the push plate furnace is arranged on the rotating disc in the radial direction, and a conveying frame used for conveying material boxes from the warehouse to the push plate furnace is arranged on the rotating disc in the radial direction. The device has the advantages that the thrust F2 of the push rod to the material box in the furnace tube can be greatly reduced, so that the furnace capacity is obviously increased; and meanwhile, the material box which is pushed out of the furnace tube after deoxidation can be directly rotated back to a warehouse position, so that the complex arrangement of a returning track used in the prior art is avoided, and the returning process of the material box is greatly simplified.

Description

Technical Field

[0001] The present invention relates to a discharging method for a pusher furnace, belonging to the technical field of application of reduction furnaces. Background Art

[0002] A kind of pusher furnace for deoxidizing hard alloy powder, the main body adopts a tubular furnace structure, which has a stainless steel furnace tube that can penetrate through from front to back. The furnace tube has a rear end inlet and a front end outlet, and a front furnace door and a rear furnace door are respectively arranged at the rear end inlet and the front end outlet. An electric heating system is arranged on the outer wall of the furnace tube, and a heat insulation layer is provided between the outer periphery of the furnace tube and the furnace shell. A push rod device is also arranged behind the pusher furnace, which has a push rod with a set length that can penetrate into the furnace tube to a certain depth. The pusher furnace has a number of high-temperature resistant material boxes adapted to the diameter of the furnace tube. The material box has a high-temperature resistant graphite bottom plate, and the height of the material box is only about 20 mm. The hard alloy powder to be deoxidized is placed in the material box. During deoxidation, the push rod acts on the graphite bottom plate of the material box to push the material box into the furnace tube from the rear end inlet of the furnace tube. The material boxes that enter the furnace tube slide forward slowly close to each other front and back, so that the material box located at the front end of the furnace tube is continuously pushed out from the front end outlet. When the hard alloy powder in the material box passes through the furnace tube, it reacts with the hydrogen reducing agent under the action of high temperature to achieve deoxidation.

[0003] Problems existing in the above prior art: First, the furnace capacity is too small. Since the feeding and discharging of the material box are realized by the push rod pushing the bottom plate of the last material box, the graphite bottom plate of the material box needs to bear a huge thrust to make all the material boxes in the entire furnace tube overcome the friction force with the furnace tube wall and slide forward. In the case of a large material box and a long furnace tube, too large a thrust will cause the rear material box to ride on the front material box (because the height of the material box is only 20 mm). At this time, the furnace tube wall at the stacking part where the material boxes ride will be stressed concentratedly, causing the furnace tube wall to deform and scrapping the furnace tube. To ensure the smooth discharging of the pusher furnace, the material box can only be designed very small and the furnace tube very short, which results in too small a furnace capacity and is difficult to meet the large-scale production requirements.

[0004] Second, it is difficult to return the material box after deoxidation. Generally, the material box containing the hard alloy powder to be deoxidized is sent from the warehouse to the pusher furnace. After being deoxidized and pushed out from the front end of the pusher furnace, it also needs to be returned to the original storage position in the warehouse. The prior art is to set up a Figure 15 return track 13 connected at right angles in multiple sections as shown. Each section of the return track 13 needs to be provided with a push rod device, and the push rod in the push rod device is used to push it section by section before it can return to the original storage position in the warehouse 10, resulting in very complex setting and operation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is mainly: when the material box is taken out of the furnace, how to reduce the thrust applied by the push rod to the material box, so that the material box can be smoothly taken out of the furnace under the action of very small thrust, thereby increasing the volume of the material box and the inner diameter of the furnace tube, and improving the furnace capacity.

[0006] In view of the above problems, the technical solution proposed by the present invention is: A method for discharging materials from a push plate furnace is that when discharging materials, material boxes that are arranged closely in the longitudinal direction in the push plate furnace form a forward centrifugal force F1, and at the same time, a push rod of a push rod device applies a forward thrust F2 to the material boxes in the push plate furnace, so that the material boxes in the push plate furnace pass through the furnace tube from back to front under the combined action of the centrifugal force F1 and the thrust F2.

[0007] Furthermore, the above-mentioned discharging method includes the following settings: A turntable that can rotate around its own center is set in front of the warehouse, and the center area, inner ring area, middle ring area, and outer ring area are designed in sequence from the center to the edge of the turntable; The push plate furnace is arranged in the middle ring area with the rear end inlet facing the center and the front end outlet facing radially outward; The push rod device of the push plate furnace is arranged in the center area outside the center of the circle, so that the push rod of the push rod device can extend into the furnace tube from the rear end entrance of the furnace tube through the inner ring area; A conveying frame is radially arranged on the turntable so that the outer end of the conveying frame can be located in front of the warehouse, and the whole conveying frame spans the outer ring area, the middle ring area, the inner ring area and the entire center area on one side to the inner end to reach the other side of the inner ring area.

[0008] Furthermore, the above-mentioned discharging method comprises the following steps: S1: The turntable is in a stationary state, the push plate furnace is in working condition, and the conveyor rack transports a group of material boxes to be fed into the furnace from the front of the warehouse to the inner ring area behind the push plate furnace. The group of material boxes to be fed into the furnace are in a straight line with the material boxes in the furnace tube; S2: The push rod of the push rod device is pressed against the bottom plate of the last material box in a group of material boxes to be fed into the furnace that enter the inner ring area in S1, and the turntable is rotated to reach a set speed, so that the material boxes to be fed into the furnace and the material boxes in the furnace tube obtain a set centrifugal force F1; S3: The front and rear doors of the push plate furnace are both opened, and the push rod in the state of S2 applies a thrust F2 to the material box to be fed into the furnace and the material box in the furnace tube, and the material box to be fed into the furnace begins to enter the furnace tube, and the front material box in the furnace tube begins to be pushed out from the front door to the outer ring area of ​​the turntable; S4: All the material boxes to be put into the furnace in S3 are pushed into the furnace tube, and correspondingly, a group of material boxes with the same number in the furnace tube are pushed out and stored in the outer ring area, the push rod withdraws from the furnace tube to its original position, and the front furnace door and the rear furnace door are closed; S5: Slow down the turntable until it stops rotating.

[0009] Further, after completing step S5, continue to rotate the turntable so that the position in the outer ring area where the material box is pushed out stays at the position where the warehouse is located.

[0010] Further, a central disk coaxial with the turntable is arranged in the central area of the turntable. The central disk can rotate synchronously with the turntable and can also rotate relative to the turntable. The inner end of the transfer rack and the push rod device are fixedly installed on the central disk and can rotate with the central disk. Rotating the central disk can make the transfer rack and the furnace tube be in the same straight line, and continuing to rotate the central disk can make the push rod of the push rod device and the furnace tube be in the same straight line.

[0011] Further, within the range on one side of the turntable, a plurality of push plate furnaces can be radially arranged, and on one side of the central disk, a plurality of push rod devices can be radially arranged, with the number and intervals corresponding to those of the push plate furnaces on the turntable respectively.

[0012] Further, a transmission groove is arranged on the transfer rack, and a driving transmission roller column driven by a second motor is arranged at the bottom of the transmission groove.

[0013] Further, a waiting rotation groove for docking with the furnace tube and receiving a group of material boxes to be put into the furnace transmitted by the transfer rack is arranged in the inner ring area behind the push plate furnace. Driven transmission roller columns are arranged in the waiting rotation groove, and the transmission groove of the transfer rack can be linearly docked with the waiting rotation groove.

[0014] Further, a first traveling wheel driven by a first motor and traveling on the turntable is arranged on the frame of the transfer rack. It is designed that the rotation of the central disk is realized by the first motor driving the first traveling wheel to make the transfer rack rotate around the center on the turntable.

[0015] Further, an annular track is arranged on the ground below the turntable, and a second traveling wheel is arranged below the turntable. The rotation of the turntable is driven by a third motor.

[0016] Beneficial effects: When the material box exits the furnace, the addition of the centrifugal force F1 can significantly reduce the thrust F2 of the push rod on the material box in the furnace tube, preventing the subsequent material box from climbing on the previous material box, and at the same time avoiding a certain part of the inner wall of the furnace tube from being concentrated with too much resistance and deforming. Furthermore, the diameter of the furnace tube can be significantly increased, the volume of the material box can be increased, and the length of the furnace tube can be extended. Thus, on the premise of ensuring the smooth exit of the material box, the furnace capacity can be significantly increased; at the same time, the setting of the turntable enables the material box pushed out of the furnace tube after deoxidation to be directly rotated back to the warehouse position, eliminating the complex setting of using a return track in the prior art and greatly simplifying the return process of the material box. Description of the Drawings

[0017] Figure 1 It is a cross-sectional view of the furnace tube; Figure 2 It is a top view of the turntable, showing the division of the turntable area in the figure; Figure 3It is a three-dimensional schematic diagram of the turntable; Figure 4 It is a three-dimensional schematic diagram of the conveyor rack; Figure 5 It is Figure 4 a partial schematic diagram of the position pointed by arrow C in Figure 6 It is Figure 3 a partial schematic diagram of the position pointed by arrow B in Figure 7 It is a sectional schematic diagram of the structural relationship between the rotating shaft, the turntable and the core plate; Figure 8 It is a top view schematic diagram of the positional relationship between the turntable and the warehouse; The situation before the start of step S1 is shown in the figure; Figure 9 It is a top view schematic diagram of the turntable, the warehouse, etc. The figure shows a group of material boxes to be fed into the furnace being transported from in front of the warehouse to the waiting-to-rotate groove in the inner ring area behind the pusher furnace; Figure 10 It is Figure 9 a partial schematic diagram of the position pointed by arrow D in Figure 11 It is a top view schematic diagram of the turntable, the warehouse, etc. The figure shows that the push rods of all pusher devices have respectively abutted against the last material box in the corresponding group of material boxes to be fed into the furnace that have entered the inner ring area; Figure 12 It is a top view schematic diagram of the turntable, the warehouse, etc. The figure shows that the turntable starts to rotate, the push rods of each pusher device apply a thrust to the group of material boxes to be fed into the furnace to which they belong, and a part of the group of material boxes to be fed into the furnace to which they belong has been pushed into the furnace tube, and a part of the group of material boxes that have completed deoxidation in the front section of the furnace tube has been pushed out to the outer ring area. The arc arrow A in the figure indicates the rotation direction of the turntable, but the turntable can also rotate reversely in the direction shown by arrow A; Figure 13 It is Figure 12 a partial schematic diagram of the position pointed by arrow E in , the figure shows that the rotating turntable causes the material boxes inside and outside the furnace tube to form a centrifugal force F1, and at the same time the push rods of each pusher device apply a thrust F2 to the group of material boxes to which they belong; Figure 14 It is a top view schematic diagram of the turntable, the warehouse, etc. The figure shows that a group of material boxes to be fed into the furnace have all been pushed into the furnace tube. Correspondingly, a group of material boxes with the same quantity inside the furnace tube have been pushed out and stored in the outer ring area, and the push rods have withdrawn from the furnace tube to their original positions; Figure 15 It is a schematic diagram of the prior art pusher furnace and the material box return track.

[0018] In the figure: 1. Push plate furnace; 11. Furnace tube; 111. Front end outlet; 112. Rear end inlet; 12. Front furnace door; 13. Return conveyor track; 2. Pusher device; 21. Pusher; 3. Material box; 4. Turntable; 40. Center of circle; 41. Central area; 42. Inner ring area; 43. Middle ring area; 44. Outer ring area; 45. Pressure bearing 1; 5. Center plate; 51. Pressure bearing 2; 6. Rotating shaft; 7. Conveyor rack; 71. Driving transmission roller; 72. Traveling wheel 1; 73. Motor 1; 74. Motor 2; 75. Chain; 8. Groove to be rotated; 81. Driven transmission roller; 9. Ring track; 91. Traveling wheel 2; 10. Warehouse. Detailed implementation mode

[0019] The following further describes the present invention in conjunction with embodiments and drawings: Embodiment 1:

[0020] As Figure 1 , 12 , shown in 13, a discharging method of a push plate furnace is that during discharging, a centrifugal force F1 forward is formed by the material boxes 3 longitudinally arranged closely in the push plate furnace 1, and at the same time, a forward thrust F2 is applied to the material boxes 3 in the push plate furnace 1 by the pusher 21 of the pusher device 2, so that the material boxes 3 in the push plate furnace 1 pass through from the rear to the front in the furnace tube 11 under the combined action of the centrifugal force F1 and the thrust F2. The centrifugal force F1 is designed to be as large as possible, so that the thrust F2 can be reduced as much as possible. Since the centrifugal force F1 is owned by each material box 3 respectively, only a very small thrust F2 is applied between the adjacent material boxes 3 arranged closely, which will not cause the rear material box 3 to climb on the front material box 3, and at the same time, it will not cause too large resistance to deform a certain part of the inner wall of the furnace tube 11. In this way, the diameter of the furnace tube can be significantly increased, the volume of the material box 3 can be increased, and the length of the furnace tube can be extended, so as to significantly increase the furnace capacity and improve the production efficiency on the premise of ensuring the smooth discharging of the material box 3.

[0021] It should be noted here that the discharging of the material box 3 needs to be completed under the combined action of the centrifugal force F1 and the thrust F2. If it depends entirely on the centrifugal force F1, the rotation speed of the turntable 4 is required to be too high, and the discharging amount of the material box 3 at one time is difficult to control. Therefore, the ratio of the centrifugal force F1 to the thrust F2 can be increased as much as possible, but the thrust F2 should not be zero.

[0022] The above method includes the following settings: As Figure 2 , 3 , shown in, a turntable 4 that can rotate around its own center of circle 40 is arranged in front of the warehouse 10, and a central area 41, an inner ring area 42, a middle ring area 43, and an outer ring area 44 are designed in sequence from the center of the turntable 4 to the edge; The push plate furnace 1 is arranged in the middle ring area 43 with the rear end inlet 112 facing the center and the front end outlet 111 facing outward radially; The push rod device 2 of the push plate furnace 1 is arranged in the center area 41 outside the center 40, so that the push rod 21 of the push rod device 2 can extend into the furnace tube 11 from the rear end entrance 112 of the furnace tube 11 through the inner ring area 42 (a center plate 5 which can rotate relative to the turntable 4 is provided in the center area 41, and the push rod device 2 is arranged on the center plate 5. Rotating the center plate 5 can align the push rod 21 of the push rod device 2 with the furnace tube 11, which will be explained in more detail later).

[0023] like Figure 2 , 3 As shown in Figures 4 and 5, a conveying rack 7 is radially arranged on the turntable 4 so that the outer end of the conveying rack 7 can be located in front of the warehouse 10, and the whole conveying rack 7 spans the outer ring area 44, the middle ring area 43, the inner ring area 42 and the entire center area 41 on one side to the inner end to reach the other side of the inner ring area 42.

[0024] According to the above settings, the discharging method of the push plate furnace includes the following steps (the following steps can be found in Figure 9 —14): S1: The turntable 4 is in a stationary state, the push plate furnace 1 is in working condition, and the conveyor frame 7 transports a group of material boxes 3 to be fed into the furnace from the front of the warehouse 10 to the inner ring area 42 behind the push plate furnace 1. The group of material boxes 3 to be fed into the furnace are in a straight line with the material boxes 3 in the furnace tube 11, see Figure 9 , 10 ; S2: The push rod 21 of the push rod device 2 is pressed against the bottom plate of the last material box 3 in a group of material boxes 3 to be fed into the furnace that enter the inner ring area 42 in S1, and the turntable 4 is rotated to reach the set speed, so that the material box 3 to be fed into the furnace and the material box 3 in the furnace tube 11 obtain the set centrifugal force F1, see Figure 11 ; S3: The front furnace door 12 and the rear furnace door of the push plate furnace 1 are both opened, and the push rod 21 in the state of S2 applies a thrust F2 to the material box 3 to be introduced into the furnace and the material box 3 in the furnace tube 11, and the material box 3 to be introduced into the furnace begins to enter the furnace tube 11, and the front end material box 3 in the furnace tube 11 begins to be pushed out from the front furnace door 12 to the outer ring area 44 of the turntable 4, see Figure 12 , 13 ; S4: All the material boxes 3 to be put into the furnace in S3 are pushed into the furnace tube 11. Correspondingly, a group of material boxes 3 of the same number in the furnace tube 11 are pushed out and stored in the outer ring area 44. The push rod 21 withdraws from the furnace tube 11 to its original position, and the front furnace door 12 and the rear furnace door are closed. Figure 14 ; S5: decelerate the turntable 4 until it stops rotating.

[0025] In this way, a group of material boxes 3 are taken out of the oven.

[0026] It should be noted here that at the start of S1, the furnace tubes 11 of the pusher furnace 1 are already filled longitudinally and tightly with material boxes 3 from front to back, and deoxidation has been carried out under working conditions. And at least when step S3 is executed, a group of material boxes 3 at the front end of the furnace tube 11 has reached the deoxidation and discharging standard. Before the start of S1, the initial way for the material boxes 3 to enter the furnace tubes 11 is as follows: the material boxes 3 to be put into the furnace are grouped and conveyed by the conveying rack 7 from in front of the warehouse 10 to the inner ring area 42 behind the pusher furnace 1, and then the push rods 21 of the push rod device 2 push the material boxes 3 into the furnace tubes 11 one group at a time until the furnace tubes 11 are full.

[0027] As can be seen from the above, in the above steps, the discharging of the material boxes 3 in the furnace tubes 11 and the charging of the material boxes 3 to be put into the furnace are carried out in equal amounts and synchronously.

[0028] As Figure 2 , 3 shown, further, a central disc 5 coaxial with the turntable 4 is arranged in the central area of the turntable 4, which can rotate synchronously with the turntable 4 and can also rotate relative to the turntable 4. The inner end of the conveying rack 7 and the push rod device 2 are fixedly installed on the central disc 5 and can make the conveying rack 7 and the push rod device 2 rotate with the central disc 5. Rotating the central disc 5 can make the conveying rack 7 and the furnace tube 11 in the same straight line, and continuing to rotate the central disc 5 can make the push rod 21 of the push rod device 2 and the furnace tube 11 in the same straight line. When step S1 is executed, rotate the central disc 5 to move the push rod 21 of the push rod device 2 away from the directly rear of the corresponding pusher furnace 1, make the conveying rack 7 and the furnace tube 11 in the same straight line, and then the conveying rack 7 pushes a group of material boxes 3 to be put into the furnace to the rear of the furnace tube 11 (see Figure 9 , 10 ), then rotate the central disc 5 back to make the push rod 21 and the furnace tube 11 in the same straight line, and fix the central disc 5 and the turntable 4 so that the central disc 5 and the conveying rack 7 and the push rod device 2 fixed to the central disc 5 can rotate synchronously (see Figure 11 ), and then start to execute step S2, so that a group of material boxes 3 to be put into the furnace are successfully transferred from the warehouse into the furnace tube 11.

[0029] Further, as Figure 8 -14 shown, according to the above settings and operation methods, a plurality of pusher furnaces 1 can be radially arranged within a range (close to a semi-circle) on one side of the turntable 4, and a plurality of push rod devices 2 with the same number and intervals as those of the pusher furnaces 1 on the turntable 4 can be radially arranged on one side of the central disc 5. When step S1 is executed, rotate the central disc 5 to move the push rods 21 of all the push rod devices 2 away from the directly rear of the corresponding pusher furnaces 1, and at the same time make the conveying rack 7 convey a group of material boxes 3 one by one behind the furnace tube 11 in sequence, then rotate the central disc 5 back to make each push rod 21 and the corresponding furnace tube 11 in the same straight line, and then step S2 can be started for all the furnace tubes 11 at the same time. In this way, the production capacity is increased several times.

[0030] As shown Figure 5 Preferably, a transmission slot is provided on the transfer rack 7, and a driving transmission roller column 71 driven by a second motor 74 is provided at the bottom of the transmission slot. The driving transmission roller column 71 that rotates synchronously conveys the cartridge 3 in the transmission slot to the inner end of the transfer rack 7.

[0031] The adjacent driving transmission roller columns 71 are cooperatively driven through gears and a chain 75.

[0032] On the frame of the transfer rack 7, a first traveling wheel 72 that travels on the turntable 4 and is driven by a first motor 73 is provided. It is designed that the rotation of the center plate 5 is realized by the first motor 73 driving the first traveling wheel 72 to rotate the transfer rack 7 on the turntable 4, so as to realize the deviation and alignment of the transfer rack 7 and the furnace tube 11, and to realize the deviation and alignment of the push rod 21 and the furnace tube 11.

[0033] As an option, the way to fix the center plate 5 and the turntable 4 can be to provide a pin (not shown in the figure) between the transfer rack 7 and the turntable 4.

[0034] Furthermore, as shown Figure 3 、 6 、8, 10, a waiting transfer slot 8 for receiving a group of cartridges 3 to be put into the furnace and docked with the furnace tube 11 is provided in the inner ring area 42 behind the pusher furnace 1. Driven transmission roller columns 81 are provided in the waiting transfer slot 8. The transmission slot of the transfer rack 7 can be linearly docked with the waiting transfer slot 8. A group of cartridges 3 to be put into the furnace coming from the transfer rack 7 can slide on the driven transmission roller columns 81 to a set position under the action of inertia and the continuous forward thrust applied by the subsequent driving transmission roller column 71 after entering the waiting transfer slot 8.

[0035] As shown Figure 3 On the ground below the turntable 4, an annular track 9 is provided, and a second traveling wheel 91 is provided under the turntable 4. The rotation of the turntable 4 is driven by a third motor (not shown in the figure). Here, the third motor can be directly used to drive the second traveling wheel 91, or can drive a gear (not shown in the figure) fixed on the bottom surface of the turntable 4 and concentric with the turntable 4 at the center 40.

[0036] As shown Figure 7 As an option, the turntable 4 and the center plate 5 share a rotating shaft 6, and a first pressure bearing 45 and a second pressure bearing 51 can be respectively provided between the turntable 4 and the rotating shaft 6, and between the center plate 5 and the turntable 4.

[0037] Embodiment 2:

[0038] As shown Figure 14As shown, after completing step S5, continue to rotate the turntable so that the position where the outer ring area 44 stores the cartridge 3 pushed out of the cartridge magazine 3 stays at the position where the warehouse 10 is located. In this way, the cartridge 3 in the furnace tube 11 that has completed deoxidation can be directly rotated to the warehouse position, eliminating the complex setting of the return track 13 in the prior art and greatly simplifying the return process of the cartridge 3.

[0039] The above embodiments are only used to illustrate the present invention and cannot be used to limit the protection scope covered by the present invention. Without departing from the principle of the present invention, any improvement or modification made by anyone should be regarded as falling within the protection scope of the present invention.

Claims

1. A method for discharging materials from a push plate furnace, characterized in that: When discharging materials, the material boxes (3) arranged closely in the longitudinal direction in the push plate furnace (1) form a forward centrifugal force F1, and at the same time, the push rod (21) of the push rod device (2) applies a forward thrust F2 to the material boxes (3) in the push plate furnace (1), so that the material boxes (3) in the push plate furnace (1) pass through the furnace tube (11) from back to front under the combined action of the centrifugal force F1 and the thrust F2; Specifically, the following configuration is performed: a turntable (4) capable of rotating around its own center (40) is arranged in front of the warehouse (10); a center area (41), an inner ring area (42), a middle ring area (43), and an outer ring area (44) are sequentially designed from the center to the edge of the turntable (4); The push plate furnace (1) is arranged in a central ring region (43) with the rear end inlet (112) facing the center and the front end outlet (111) facing radially outward; The push rod device (2) of the push plate furnace (1) is arranged in a circle center area (41) outside the circle center (40), so that the push rod (21) of the push rod device (2) can extend into the furnace tube (11) from the rear end entrance (112) of the furnace tube (11) through the inner ring area (42); A conveying rack (7) is radially arranged on the turntable (4) so ​​that the outer end of the conveying rack (7) can be located in front of the warehouse (10), and the entire conveying rack (7) spans an outer ring area (44), a middle ring area (43), an inner ring area (42) and the entire center area (41) on one side to the inner end and reaches the other side of the inner ring area (42).

2. The method for discharging materials from a push plate furnace according to claim 1, characterized in that: The steps include: S1: the turntable (4) is in a stationary state, the push plate furnace (1) is in working condition, and a group of material boxes (3) to be fed into the furnace are transported from the front of the warehouse (10) to the inner ring area (42) behind the push plate furnace (1) by the conveyor rack (7), and the group of material boxes (3) to be fed into the furnace are in a straight line with the material boxes (3) in the furnace tube (11); S2: the push rod (21) of the push rod device (2) is pressed against the bottom plate of the last material box (3) in a group of material boxes (3) to be fed into the furnace and entering the inner ring area (42) in S1, and the turntable (4) is rotated to reach a set speed, so that the material box (3) to be fed into the furnace and the material box (3) in the furnace tube (11) obtain a set centrifugal force F1; S3: the front furnace door (12) and the rear furnace door of the push plate furnace (1) are both opened, and the push rod (21) in the state of S2 applies a thrust F2 to the material box (3) to be introduced into the furnace and the material box (3) in the furnace tube (11), so that the material box (3) to be introduced into the furnace begins to enter the furnace tube (11), and the front material box (3) in the furnace tube (11) begins to be pushed out from the front furnace door (12) to the outer ring area (44) of the turntable (4); S4: the group of material boxes (3) to be introduced into the furnace in S3 are all pushed into the furnace tube (11), and correspondingly, a group of material boxes (3) of the same number in the furnace tube (11) are pushed out and stored in the outer ring area (44), the push rod (21) withdraws from the furnace tube (11) to its original position, and the front furnace door (12) and the rear furnace door are closed; S5: decelerate the turntable (4) until it stops rotating.

3. The method for discharging materials from a push plate furnace according to claim 2, characterized in that: After completing step S5, the turntable continues to rotate so that the position of the outer ring area (44) storing the ejected material boxes (3) stays at the position of the warehouse (10).

4. The method for discharging materials from a push plate furnace according to claim 2, characterized in that: A center plate (5) coaxial with the turntable (4) is arranged in the center region of the turntable (4) and can rotate synchronously with the turntable (4) and relative to the turntable (4). The inner end of the conveying frame (7) and the push rod device (2) are fixedly mounted on the center plate (5) so that the conveying frame (7) and the push rod device (2) can rotate with the center plate (5). The center plate (5) can be rotated so that the conveying frame (7) and the furnace tube (11) are in the same straight line. The center plate (5) can be rotated further so that the push rod (21) of the push rod device (2) and the furnace tube (11) are in the same straight line.

5. The method for discharging materials from a push plate furnace according to claim 4, characterized in that: A plurality of push plate furnaces (1) can be radially arranged within the range of one side of the turntable (4), and a plurality of push rod devices (2) whose number and intervals correspond to the number and intervals of the push plate furnaces (1) on the turntable (4) can be radially arranged on one side of the core plate (5).

6. The method for discharging materials from a push plate furnace according to claim 4, characterized in that: A transmission trough is arranged on the transmission frame (7), and an active transmission roller (71) driven by a second motor (74) is arranged at the bottom of the transmission trough.

7. The method for discharging materials from a push plate furnace according to claim 6, characterized in that: A waiting groove (8) is provided in the inner ring area (42) behind the push plate furnace (1) and is docked with the furnace tube (11) for receiving a group of material boxes (3) to be put into the furnace transmitted by the conveying rack (7). A driven transmission roller (81) is provided in the waiting groove (8), and the transmission groove of the conveying rack (7) can be linearly docked with the waiting groove (8).

8. The method for discharging materials from a push plate furnace according to claim 4, characterized in that: A running wheel (72) driven by a motor (73) and running on the turntable (4) is provided on the frame body of the conveying frame (7). The rotation of the center plate (5) is designed to be achieved by the motor (73) driving the running wheel (72) to make the conveying frame (7) rotate around the center (40) on the turntable (4).

9. The method for discharging materials from a push plate furnace according to any one of claims 1 to 8, characterized in that: A circular track (9) is arranged on the ground below the turntable (4), and a second running wheel (91) is arranged under the turntable (4). The rotation of the turntable (4) is driven by a motor three.

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