A discharging method for a pusher furnace

Abstract

The present invention discloses a discharging method for a pusher furnace, belonging to the technical field of application of reduction furnaces. During discharging, a centrifugal force F1 acting forward is formed on the material boxes longitudinally and closely arranged in the pusher furnace, and at the same time, a forward thrust F2 is applied to the material boxes in the pusher furnace by the push rod of the push rod device, so that the material boxes in the pusher furnace pass through the furnace tube from back to front under the combined action of the centrifugal force F1 and the thrust F2. The above-mentioned discharging method includes arranging a turntable capable of rotating around its own center in front of the warehouse, arranging the pusher furnace radially on the turntable, and further includes arranging a transfer rack radially on the turntable for transferring the material boxes from the warehouse to the pusher furnace. Its advantages are as follows: it can greatly reduce the thrust F2 of the push rod on the material boxes in the furnace tube, thereby significantly increasing the furnace capacity; at the same time, it can directly transfer the material boxes pushed out of the furnace tube after deoxidation 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 boxes.

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 the front and 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 provided at the rear end inlet and the front end outlet. An electric heating system is provided on the outer wall of the furnace tube, and a heat insulation layer is between the outer periphery of the furnace tube and the furnace shell. A push rod device is also provided 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 several 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 with the front and back adjacent to each other, 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 is deoxidized by reacting with a hydrogen reducing agent under the action of high temperature.

[0003] Problems existing in the above prior art:

[0004] 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 enable all the material boxes in the entire furnace tube to 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 position of the material box will be subjected to concentrated stress and the furnace tube wall will be deformed, resulting in the scrapping of 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 is designed very short, which also leads to too small a furnace capacity and it is difficult to meet the production requirements of large quantities.

[0005] 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 multi-section return track 13 connected at right angles as shown in Figure 15 Figure 19. 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 in order to return to the original storage position in the warehouse 10, resulting in very complicated setting and operation. Summary of the Invention

[0006] 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.

[0007] In view of the above problems, the technical solution proposed by the present invention is:

[0008] 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.

[0009] Furthermore, the above-mentioned discharging method includes the following settings:

[0010] 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;

[0011] 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;

[0012] 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;

[0013] 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.

[0014] Furthermore, the above-mentioned discharging method comprises the following steps:

[0015] 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;

[0016] 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;

[0017] 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;

[0018] S4: A set of cassettes to be fed into the furnace in S3 are all pushed into the furnace tube. Correspondingly, a set of cassettes with the same quantity inside 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.

[0019] S5: Decelerate the turntable until it stops rotating.

[0020] Further, after completing step S5, continue to rotate the turntable so that the position in the outer ring area where the pushed-out cassettes are stored stays at the position where the warehouse is located.

[0021] Further, a central disk coaxial with the turntable is arranged in the central area of the turntable, which 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 make the transfer rack and the push rod device 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.

[0022] Further, within the range on one side of the turntable, a plurality of pusher furnaces can be radially arranged, and on one side of the central disk, a plurality of push rod devices can be radially arranged, the quantity and intervals of which respectively correspond to the quantity and intervals of the pusher furnaces on the turntable.

[0023] 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.

[0024] Further, a waiting rotation groove for docking with the furnace tube and receiving a set of cassettes to be fed into the furnace transmitted by the transfer rack is arranged in the inner ring area behind the pusher 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.

[0025] 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.

[0026] Further, an annular track is arranged on the ground below the turntable, and a second traveling wheel is arranged under the turntable. The rotation of the turntable is driven by a third motor.

[0027] Beneficial effects: When the cassettes are taken out of the furnace, the addition of the centrifugal force F1 can significantly reduce the thrust F2 of the push rod on the cassettes inside the furnace tube, prevent the rear cassettes from climbing on the front cassettes, and avoid causing a large resistance to be concentrated on a certain part of the inner wall of the furnace tube, resulting in deformation. Furthermore, the diameter of the furnace tube can be significantly increased, the volume of the cassettes can be increased, and the length of the furnace tube can be extended. Thus, on the premise of ensuring the smooth taking-out of the cassettes, the furnace capacity can be significantly increased. At the same time, the setting of the turntable enables the cassettes 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 cassettes. Description of the Drawings

[0028] Figure 1 is a schematic cross-sectional view of the furnace tube;

[0029] Figure 2 is a schematic top view of the turntable, showing the division of the turntable area in the figure;

[0030] Figure 3 is a schematic perspective view of the turntable;

[0031] Figure 4 is a schematic perspective view of the conveyor rack;

[0032] Figure 5 is Figure 4 a partial schematic view of the position indicated by arrow C in;

[0033] Figure 6 is Figure 3 a partial schematic view of the position indicated by arrow B in;

[0034] Figure 7 is a schematic cross-sectional view of the structural relationship between the rotating shaft, the turntable and the center plate;

[0035] Figure 8 is a schematic top view of the positional relationship between the turntable and the warehouse; the situation before the start of step S1 is shown in the figure;

[0036] Figure 9 is a schematic top view of the turntable and the warehouse, etc., showing a set of material boxes to be fed into the furnace being conveyed from in front of the warehouse to the waiting transfer groove in the inner ring area behind the pusher furnace;

[0037] Figure 10 is Figure 9 a partial schematic view of the position indicated by arrow D in;

[0038] Figure 11 is a schematic top view of the turntable and the warehouse, etc., showing that the push rods of all pusher devices have respectively abutted against the last material box in a corresponding set of material boxes to be fed into the inner ring area;

[0039] Figure 12 is a schematic top view of the turntable and the warehouse, etc., showing that the turntable starts to rotate, the push rods of each pusher device apply a thrust to the set of material boxes to be fed into the furnace belonging to them, and a part of the set of material boxes to be fed into the furnace belonging to each of them has been pushed into the furnace tube, while a part of the set 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 curved arrow A in the figure indicates the rotation direction of the turntable, but the turntable can also rotate reversely in the direction indicated by arrow A;

[0040] Figure 13 is Figure 12A partial schematic diagram at the position indicated by arrow E in the figure shows that the rotating turntable causes centrifugal forces F1 to be formed in both the inner and outer furnace tubes of the material boxes, and at the same time, the push rods of each push rod device apply a thrust F2 to the group of material boxes to which they belong.

[0041] Figure 14 This is a top view schematic diagram of the turntable and the warehouse, etc. The figure shows that a group of material boxes to be fed into the furnace are all pushed into the furnace tube. Correspondingly, a group of material boxes with the same number inside the furnace tube are pushed out and stored in the outer ring area, and the push rods retract from the furnace tube to their original positions.

[0042] Figure 15 This is a schematic diagram of the pusher furnace and the material box return track in the prior art.

[0043] In the figure: 1. Pusher furnace; 11. Furnace tube; 111. Front end outlet; 112. Rear end inlet; 12. Front furnace door; 13. Return track; 2. Push rod device; 21. Push rod; 3. Material box; 4. Turntable; 40. Center of the circle; 41. Center 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. Active transmission roller; 72. Traveling wheel 1; 73. Motor 1; 74. Motor 2; 75. Chain; 8. Waiting to rotate groove; 81. Driven transmission roller; 9. Ring track; 91. Traveling wheel 2; 10. Warehouse. Detailed implementation mode

[0044] The following further describes the present invention in combination with the embodiments and the drawings:

[0045] Embodiment 1:

[0046] As shown in Figure 1 、 12 、13, a discharging method of a pusher furnace is that during discharging, the material boxes 3 arranged longitudinally and closely in the pusher 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 pusher furnace 1, so that the material boxes 3 in the pusher furnace 1 pass through from the back 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 minimized as much as possible. Since the centrifugal force F1 is possessed by each material box 3 individually, only a very small thrust F2 is exerted between the adjacent material boxes 3 arranged closely, which will not cause the rear material box 3 to ride on the front material box 3, and at the same time, it will not cause a too large resistance to be concentrated at a certain place on the inner wall of the furnace tube 11 and cause deformation. 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.

[0047] It should be noted here that the material box 3 needs to be taken out of the furnace under the combined action of the centrifugal force F1 and the thrust F2. If it relies entirely on the centrifugal force F1, the rotation speed of the turntable 4 will be too high, and the amount of material box 3 pushed out at one time will be 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.

[0048] The above method includes making the following settings:

[0049] like Figure 2 , 3 As shown, a turntable 4 that can rotate around its own center 40 is arranged in front of the warehouse 10, and 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;

[0050] The push plate furnace 1 is arranged in the middle ring area 43 with the rear end inlet 112 being centripetal and the front end outlet 111 being radially outward;

[0051] 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).

[0052] 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.

[0053] 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):

[0054] 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 ;

[0055] 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 ;

[0056] S3: The front furnace door 12 and the rear furnace door of the pusher furnace 1 are both opened. The push rod 21 in the state of S2 applies a thrust F2 to the cartridge case 3 to be fed into the furnace and the cartridge case 3 in the furnace tube 11. The cartridge case 3 to be fed into the furnace starts to enter the furnace tube 11, and the front cartridge case 3 in the furnace tube 11 starts to be pushed out from the front furnace door 12 to the outer ring area 44 of the turntable 4. See Figure 12 、 13 ;

[0057] S4: A group of cartridge cases 3 to be fed into the furnace in S3 are all pushed into the furnace tube 11. Correspondingly, a group of cartridge cases 3 with the same quantity 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. See Figure 14 ;

[0058] S5: Decelerate the turntable 4 until it stops rotating.

[0059] In this way, the discharging of a group of cartridge cases 3 is completed.

[0060] It should be noted here that at the start of S1, the furnace tube 11 of the pusher furnace 1 is already longitudinally and tightly filled with cartridge cases 3 front and back, and has been deoxidized under working conditions, and at least a group of cartridge cases 3 at the front end of the furnace tube 11 have reached the deoxidation and discharging standard when performing step S3. The initial way for the cartridge case 3 to enter the furnace tube 11 before the start of S1 is: the cartridge cases 3 to be fed into the furnace are grouped and conveyed from in front of the warehouse 10 to the inner ring area 42 behind the pusher furnace 1 by the conveying rack 7, and then the push rod 21 of the push rod device 2 pushes the cartridge cases 3 into the furnace tube 11 one group at a time until the furnace tube 11 is filled.

[0061] It can be seen from the above that in the above steps, the discharging of the cartridge cases 3 in the furnace tube 11 and the feeding of the cartridge cases 3 to be fed into the furnace are carried out in equal quantity and synchronously.

[0062] Such as Figure 2 、 3 shown, further, a core plate 5 coaxial with the turntable 4 that can rotate synchronously with the turntable 4 and can also rotate relative to the turntable 4 is arranged in the center area of the turntable 4. The inner end of the conveying rack 7 and the push rod device 2 are fixedly installed on the core plate 5 and can make the conveying rack 7 and the push rod device 2 rotate with the core plate 5. Rotating the core plate 5 can make the conveying rack 7 and the furnace tube 11 in the same straight line, and continuing to rotate the core plate 5 can make the push rod 21 of the push rod device 2 and the furnace tube 11 in the same straight line. When performing step S1, rotate the core plate 5 to move the push rod 21 of the push rod device 2 away from the exact 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 cartridge cases 3 to be fed into the furnace to the rear of the furnace tube 11 (see Figure 9 、 10), then rotate the center plate 5 to align the push rod 21 with the furnace tube 11 in a straight line, and fix the center plate 5 to the turntable 4 so that the center plate 5, the conveyor frame 7 fixed to the center plate 5, and the push rod device 2 can rotate synchronously (see Figure 11 ), and then start to execute step S2, thus successfully completing the entry of a group of material boxes 3 to be fed into the furnace tube 11 from the warehouse.

[0063] Furthermore, as shown in Figure 8 —14, 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 quantities and intervals corresponding to those of the pusher furnaces 1 on the turntable 4 can be radially arranged on one side of the center plate 5. When executing step S1, rotate the center plate 5 to move the push rods 21 of all the push rod devices 2 away from the rear of the corresponding pusher furnaces 1, and at the same time, make the conveyor frame 7 sequentially convey a group of material boxes 3 behind the furnace tube 11 one by one. Then rotate the center plate 5 to align each push rod 21 with the corresponding furnace tube 11 in a straight line, and then step S2 can be started for all the furnace tubes 1 simultaneously. In this way, the production capacity is increased several times.

[0064] As shown in Figure 5 , preferably, a transmission groove is provided on the conveyor frame 7, and a driving transmission roller column 71 driven by a second motor 74 is provided at the bottom of the transmission groove. The driving transmission roller column 71 that rotates synchronously conveys the material boxes 3 in the transmission groove towards the inner end of the conveyor frame 7.

[0065] The adjacent driving transmission roller columns 71 are in transmission cooperation through gears and chains 75.

[0066] On the frame of the conveyor frame 7, a first traveling wheel 72 traveling on the turntable 4 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 conveyor frame 7 on the turntable 4, so as to realize the deviation and alignment of the conveyor frame 7 with the furnace tube 11, and the deviation and alignment of the push rod 21 with the furnace tube 11.

[0067] As an option, the way to fix the center plate 5 to the turntable 4 can be to set a pin (not shown in the figure) between the conveyor frame 7 and the turntable 4.

[0068] Furthermore, as shown in Figure 3 、 6As shown in FIGS. 8 and 10, a waiting transfer groove 8 for receiving a group of material boxes 3 to be put into the furnace, which are transmitted by the transfer rack 7 and docked with the furnace tubes 11, is arranged in the inner ring area 42 behind the pusher furnace 1. Driven transmission rollers 81 are arranged in the waiting transfer groove 8. The transmission groove of the transfer rack 7 can be linearly docked with the waiting transfer groove 8. A group of material boxes 3 to be put into the furnace, which are transmitted by the transfer rack 7, can slide on the driven transmission rollers 81 to a set position after entering the waiting transfer groove 8 under the action of inertia and the continuous forward thrust applied by the subsequent driving transmission rollers 71.

[0069] As Figure 3 shown, an annular track 9 is arranged on the ground below the turntable 4, and traveling wheels II 91 are arranged under the turntable 4. The rotation of the turntable 4 is driven by a motor III (not shown in the figure). Here, the motor III can be directly used to drive the traveling wheels II 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 40.

[0070] As Figure 7 shown, as an option, the turntable 4 and the center plate 5 share a rotating shaft 6. A pressure bearing I 45 and a pressure bearing II 51 can be respectively arranged between the turntable 4 and the rotating shaft 6 and between the center plate 5 and the turntable 4.

[0071] Embodiment 2:

[0072] As Figure 14 shown, after completing step S5, continue to rotate the turntable so that the position in the outer ring area 44 where the discharged material box 3 is stored stays at the position where the warehouse 10 is located. In this way, the material box 3 that has been discharged from the furnace tubes 11 after deoxidation can be directly transferred to the warehouse position, eliminating the complex setting of the existing return track 13 and greatly simplifying the return process of the material box 3.

[0073] 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 discharging method of a pusher 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 at a set speed 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 frame (7) is radially arranged on the turntable (4) so that the outer end of the conveying frame (7) can be located in front of the warehouse (10), and the whole frame 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); a core plate (5) coaxial with the turntable (4) is arranged in the center area 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 a push rod device (2) are fixedly mounted on the core plate (5) so that the conveying frame (7) and the push rod device (2) can rotate with the core plate (5); rotating the core plate (5) can make the conveying frame (7) and the furnace tube (11) in the same straight line; and continuing to rotate the core plate (5) can make the push rod (21) of the push rod device (2) and the furnace tube (11) in the same straight line.

2. The discharging method of the pusher 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: A set of cassettes (3) to be fed into the furnace in S3 are all pushed into the furnace tube (11). Correspondingly, a set of cassettes (3) with the same quantity inside the furnace tube (11) are pushed out and stored in the outer ring area (44). The push rod (21) retracts 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 discharging method of the pusher furnace according to claim 2, characterized in that, After completing step S5, continue to rotate the turntable so that the position in the outer ring area (44) where the pushed-out cassettes (3) are stored stays at the position where the warehouse (10) is located.

4. The discharging method of the pusher furnace according to claim 2, characterized in that, Within the range on one side of the turntable (4), a plurality of pusher furnaces (1) can be radially arranged. On one side of the core plate (5), a plurality of push rod devices (2) can be radially arranged, the quantity and intervals of which respectively correspond to the quantity and intervals of the pusher furnaces (1) on the turntable (4).

5. The discharging method of the pusher furnace according to claim 2, characterized in that, A transfer groove is arranged on the transfer rack (7), and a driving transfer roller column (71) driven by a second motor (74) is arranged at the bottom of the transfer groove.

6. The discharging method of the pusher furnace according to claim 5, characterized in that, A waiting transfer groove (8) for receiving a set of cassettes (3) to be fed into the furnace and connected to the furnace tube (11) is arranged in the inner ring area (42) behind the pusher furnace (1). A driven transfer roller column (81) is arranged in the waiting transfer groove (8). The transfer groove of the transfer rack (7) can be linearly connected to the waiting transfer groove (8).

7. The discharging method of the pusher furnace according to claim 2, characterized in that, A first traveling wheel (72) driven by a first motor (73) and traveling on the turntable (4) is arranged on the frame of the transfer rack (7). It is designed that the rotation of the core plate (5) is realized by the first motor (73) driving the first traveling wheel (72) to make the transfer rack (7) rotate around the center (40) on the turntable (4).

8. The discharging method of the pusher furnace according to any one of claims 1 to 7, characterized in that An annular track (9) is arranged on the ground below the turntable (4), and a second traveling wheel (91) is arranged under the turntable (4). The rotation of the turntable (4) is driven by a third motor.

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