Wood chip cleaning device for anticorrosion wood chip processing

Abstract

The invention belongs to the technical field of wood chip processing, and particularly relates to an anticorrosive wood chip cleaning device for wood chip processing, which comprises a box body, a feeding hole is formed in the top of the box body, a discharging hole is formed in the bottom of the box body, a pair of symmetrically distributed crushing rollers is rotatably connected in the box body, and a pair of motors is fixed at the rear end of the box body; an output shaft of the motor is fixedly connected with the end of the corresponding smashing roller, a pair of inner protection plates wrapping the two smashing rollers is fixed in the box body, an inlet is formed in the top of each inner protection plate, a door plate capable of rotating inwards and being opened is arranged in each inlet, and a screening plate located below the two smashing rollers is arranged in the box body. The screening plate is movably connected with the box body, and the inner protection plate and the part, located above the screening plate, of the box body jointly form a material returning channel. According to the wood chip crushing device, during crushing, large wood chips which cannot pass through the screening plate can enter from an outlet in the bottom of the material returning channel under the action of the crushing roller, and then enter the position above the crushing roller again from an inlet.

Description

Technical Field

[0001] The invention relates to the technical field of sawdust processing, and in particular to a sawdust cleaning device for processing anticorrosive sawdust. Background Art

[0002] Anticorrosive wood chips are a kind of wood material that has been specially treated and has anticorrosive properties. They are used in the field of gardening as gardening coverings. Anticorrosive wood chips can be spread on the surface of flower beds, flower pots or around trees. When used in landscape projects, they can be used as ground paving materials in some landscape trails or outdoor leisure areas. When used in industrial packaging, they can be used as filling materials in some industrial product packaging that has certain anticorrosion requirements for packaging materials.

[0003] Anticorrosive wood chips mainly utilize the remaining wood chips or scraps from wood processing. After processing, they are turned into treasure, reducing the pressure of wood waste on the environment. When existing wood chip cleaning equipment crushes scraps, it is generally difficult to crush the scraps into qualified wood chips in a single crushing. Therefore, manual intervention is required and the crushing is repeated many times, resulting in reduced crushing efficiency. Therefore, corresponding improvements are made to address this problem. Summary of the invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a sawdust cleaning device for anti-corrosion sawdust processing.

[0005] The present invention provides a sawdust cleaning device for processing anticorrosive sawdust, comprising a box, a feeding port is provided at the top of the box, a discharging port is provided at the bottom of the box, a pair of symmetrically distributed crushing rollers are rotatably connected in the box, a pair of motors are fixed at the rear end of the box, the output shafts of the motors are fixedly connected to the ends of the corresponding crushing rollers, a pair of inner guard plates are fixed in the box to wrap the two crushing rollers, an inlet is provided at the top of the inner guard plates, a door panel that can be rotated inward and opened is provided in the inlet, a screening plate located below the two crushing rollers is provided in the box, the screening plate is movably connected to the box, the inner guard plates and the part of the box located above the screening plate jointly form a return channel, when crushing, large pieces of sawdust that cannot pass through the screening plate will enter from the bottom outlet of the return channel under the action of the crushing rollers, and then enter the top of the crushing rollers again from the inlet; Pour the wood scraps into the box from the feed port, and then the output shafts of the two motors drive the two crushing rollers to rotate respectively, crushing the scraps into wood chips. The qualified wood chips will fall along the screening plate and then be discharged from the discharge port. The large pieces of wood chips that are not completely crushed will stay above the screening plate. When the crushing rollers rotate, they will push the large pieces of wood chips to the outside, and then the large pieces of wood chips will enter from the bottom outlet of the return channel, and then push open the door panel and enter from the inlet again above the crushing rollers for cyclic crushing, so as to achieve the effect of complete crushing. When the large pieces of wood chips are pushed by the crushing rollers, they will also exert a downward force on the screening plate, and then the screening plate will move up and down. On the one hand, it can make more space for large pieces of wood chips to facilitate the large pieces of wood chips to enter the return channel. On the other hand, the vibration generated will speed up the screening of wood chips.

[0006] Preferably, a stopper located outside the door panel is fixed to the bottom inner wall of the inlet, and the top of the door panel is rotatably connected to the inner wall of the inlet; in this way, large pieces of wood chips will push the door panel inward, and the scraps originally located above the crushing roller are prevented from entering the return channel from the inlet.

[0007] Preferably, both ends of the screening plate are arc-shaped structures, and fixing plates are also fixed on both sides of the inner wall of the top of the box body; in this way, a smooth structure can be formed at the corners of the return channel, so that the movement of large wood chips in the return channel is smoother.

[0008] Preferably, a plurality of rotating plates rotatably connected to the box body are arranged in the return channel, a pair of first synchronous wheels are fixedly sleeved on the shaft of the rotating plate, a group of first synchronous wheels on two adjacent rotating plates are connected by a first synchronous belt, two adjacent first synchronous belts are staggered, a second synchronous wheel is installed on the output shaft of the motor, and the second synchronous wheel and a corresponding first synchronous wheel are connected by a second synchronous belt; when the output shaft of the motor rotates, the corresponding rotating plate will be driven to rotate through the second synchronous wheel and the second synchronous belt, and then the plurality of rotating plates will rotate together through the transmission cooperation of the first synchronous wheel and the first synchronous belt, so that the large pieces of wood chips can be continuously transported upward along the return channel through the rotating rotating plates, thereby ensuring the stable direction of the large pieces of wood chips.

[0009] Preferably, a pair of guide plates are fixed to the inner walls on both sides of the box body, guide columns are inserted on the guide plates, the guide columns are fixed to the bottom of the screening plate, and a reset structure is arranged between the screening plate and the guide plate; through the sliding cooperation between the guide plates and the guide columns, the screening plate can be stably limited in the up and down directions, and the screening plate can be driven to reset and move upward through the reset structure.

[0010] Preferably, the reset structure comprises a spring sleeved on the guide column, and both ends of the spring are respectively fixed on the screening plate and the guide plate; thus, the screening plate can be driven to reset upward by utilizing the elastic force of the spring.

[0011] Preferably, the reset structure includes a first magnetic ring and a second magnetic ring which are sleeved on the guide plate, and the first magnetic ring and the second magnetic ring are respectively fixed on the guide plate and the screening plate; in this way, the magnetic repulsion between the first magnetic ring and the second magnetic ring can be used to drive the screening plate to reset upward.

[0012] Preferably, the bottom ends of the two guide columns on the same side are commonly fixed with a connecting bottom plate, the bottom of the connecting bottom plate is rotatably connected to a pair of first connecting rods, the bottom ends of the two first connecting rods on the same side are commonly rotatably connected to a push plate, the bottom ends of the push plates are in contact with the bottom inner wall of the box body, and the two push plates are symmetrically distributed on both sides of the discharge port; when the guide column moves up and down, the push plates will be driven to move through the first connecting rod, and the two push plates will periodically approach each other, thereby pushing the wood chips to the discharge port, so that the wood chips can be discharged completely.

[0013] The gears are connected to each other with a second gear, and the second gears are connected with a third gear at the bottom end of the gear train to drive the gears to rotate.

[0014] Preferably, a pair of sliding openings symmetrically distributed about the feed opening are provided on the top of the box body, a pushing plate is slidably connected to the bottom of the sliding opening, a plurality of second connecting rods are rotatably connected to the outer side of the pushing plate, and the other end of the second connecting rod is rotatably connected to the door panel; when the door panel rotates inward, the pushing plate is pushed inward by the second connecting rod, so that the scraps located between the crushing rollers can be squeezed by the two pushing plates, thereby accelerating the scraps to enter between the two crushing rollers and be crushed.

[0015] Compared with the prior art, the present invention provides a sawdust cleaning device for antiseptic sawdust processing, which has the following beneficial effects:

[0016] 1. A sawdust cleaning device for processing anticorrosive sawdust, by setting a screening plate and a return channel, when the crushing roller rotates, it will push the large pieces of sawdust that are not completely crushed to the outside, and then the large pieces of sawdust will enter the top of the crushing roller from the bottom outlet of the return channel for circular crushing, so as to achieve the effect of complete crushing, and when the large pieces of sawdust are pushed by the crushing roller, the screening plate will move up and down, on the one hand, it can make more space for the large pieces of sawdust, so that the large pieces of sawdust can enter the return channel, and on the other hand, it will speed up the screening of sawdust through the vibration generated.

[0017] 2. A sawdust cleaning device for processing anticorrosive sawdust. By setting a rotating plate, the motor output shaft will drive the rotating plate to rotate together, so that large pieces of sawdust can be continuously transported upward along the return channel through the rotating rotating plate, thereby ensuring the stable direction of the large pieces of sawdust.

[0018] 3. A sawdust cleaning device for processing anticorrosive sawdust, which is provided with a flange turntable. When the turntable rotates, the flange turntable will be driven to rotate. The rotating flange turntable can use the flange of the outer wall to disperse the qualified sawdust and large sawdust above the screening plate to the outside, thereby strengthening the screening of qualified sawdust and accelerating the large sawdust to enter the return channel.

[0019] 4. A sawdust cleaning device for processing anticorrosive sawdust, which is provided with a pushing plate. When the door panel rotates inward, the pushing plate will be pushed inward through the second connecting rod, so that the scraps between the crushing rollers can be squeezed by the two pushing plates, thereby accelerating the scraps to enter between the two crushing rollers and be crushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a sawdust cleaning device for anti-corrosion sawdust processing proposed by the present invention;

[0021] Figure 2 A schematic diagram of the internal structure of a sawdust cleaning device for processing anticorrosive sawdust proposed by the present invention;

[0022] Figure 3 A schematic diagram of the inner guard plate structure of a sawdust cleaning device for anti-corrosion sawdust processing proposed by the present invention;

[0023] Figure 4 A schematic diagram of the sawdust moving process of a sawdust cleaning device for processing anticorrosive sawdust proposed by the present invention;

[0024] Figure 5 For the present invention Figure 1 A schematic diagram of the enlarged structure at point A;

[0025] Figure 6 A schematic diagram of the push plate installation structure of a sawdust cleaning device for processing anticorrosive sawdust proposed by the present invention;

[0026] Figure 7 This is a schematic structural diagram of a sawdust cleaning device for antiseptic sawdust processing proposed by the present invention;

[0027] Figure 8 A schematic diagram of the flange turntable installation structure of a sawdust cleaning device for anti-corrosion sawdust processing proposed by the present invention;

[0028] Fig. 9 This is a schematic diagram of the installation structure between a screening plate and a guide plate of a sawdust cleaning device for processing anticorrosive sawdust proposed by the present invention.

[0029] In the figure: 1. box body; 2. inner guard plate; 3. crushing roller; 4. screening plate; 5. inlet; 6. door plate; 7. stopper; 8. feed port; 9. discharge port; 10. motor; 11. fixed plate; 12. rotating plate; 13. first synchronous wheel; 14. first synchronous belt; 15. second synchronous wheel; 16. second synchronous belt; 17. guide plate; 18. guide column; 19. spring; 20. connecting bottom plate; 21. first connecting rod; 22. push plate; 23. first fixed rod; 24. first shaft rod; 25. flange turntable; 26. second fixed rod; 27. second shaft rod; 28. bevel gear; 29. ​​third synchronous wheel; 30. third synchronous belt; 31. first magnetic ring; 32. second magnetic ring; 33. pushing plate; 34. sliding mouth; 35. second connecting rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Reference Figure 1-Figure 9 , a sawdust cleaning device for processing anticorrosive sawdust comprises a box body 1, a feeding port 8 is provided on the top of the box body 1, a discharging port 9 is provided on the bottom of the box body 1, a pair of symmetrically distributed crushing rollers 3 are rotatably connected in the box body 1, a pair of motors 10 are fixed at the rear end of the box body 1, and the output shafts of the motors 10 are fixedly connected to the ends of the corresponding crushing rollers 3, a pair of inner guard plates 2 are fixed in the box body 1 to wrap the two crushing rollers 3, an inlet 5 is provided on the top of the inner guard plates 2, and a door plate 6 that can be rotated and opened inward is provided in the inlet 5, a screening plate 4 is provided below the two crushing rollers 3 in the box body 1, the screening plate 4 is movably connected to the box body 1, and the inner guard plates 2 and the part of the box body 1 located above the screening plate 4 jointly form a return channel, and when crushing, large pieces of sawdust that cannot pass through the screening plate 4 will enter from the bottom outlet of the return channel under the action of the crushing rollers 3, and then enter the top of the crushing rollers 3 again from the inlet 5;

[0033] It should be noted that the wood scraps are poured into the box body 1 from the feed port 8, and then the output shafts of the two motors 10 respectively drive the two crushing rollers 3 to rotate, and the scraps are crushed into wood chips. The qualified wood chips will fall along the screening plate 4, and then be discharged from the discharge port 9. The large pieces of wood chips that are not completely crushed will stay above the screening plate 4. When the crushing rollers 3 rotate, they will push the large pieces of wood chips to the outside, and then the large pieces of wood chips will enter from the bottom outlet of the return channel, and then push open the door panel 6 and enter the top of the crushing rollers 3 from the inlet 5 again for cyclic crushing, so as to achieve the effect of complete crushing. When the large pieces of wood chips are pushed by the crushing rollers 3, they will also generate a downward force on the screening plate 4, and then the screening plate 4 will move up and down. On the one hand, it can make more space for large pieces of wood chips, which is convenient for large pieces of wood chips to enter the return channel. On the other hand, the vibration generated will speed up the screening of wood chips.

[0034] Among them, a stopper 7 located on the outside of the door panel 6 is fixed to the bottom inner wall of the inlet 5, and the top of the door panel 6 is rotatably connected to the inner wall of the inlet 5;

[0035] It should be noted that the large pieces of wood chips will push the door panel 6 inward, and also prevent the scraps originally located above the crushing roller 3 from entering the return channel from the inlet 5.

[0036] Furthermore, both ends of the screening plate 4 are arc-shaped structures, and fixing plates 11 are also fixed on both sides of the top inner wall of the box body 1;

[0037] It should be noted that, in this way, a smooth structure can be formed at the corner of the return channel, so that the movement process of large pieces of wood chips in the return channel is smoother.

[0038] Furthermore, a plurality of rotating plates 12 rotatably connected to the box body 1 are arranged in the return channel, a pair of first synchronous wheels 13 are fixedly sleeved on the shaft of the rotating plate 12, a group of first synchronous wheels 13 on two adjacent rotating plates 12 are connected by a first synchronous belt 14, two adjacent first synchronous belts 14 are staggered, a second synchronous wheel 15 is installed on the output shaft of the motor 10, and the second synchronous wheel 15 and a corresponding first synchronous wheel 13 are connected by a second synchronous belt 16;

[0039] It should be noted that when the output shaft of the motor 10 rotates, it will drive the corresponding turn plate 12 to rotate through the second synchronous wheel 15 and the second synchronous belt 16, and then the multiple turn plates 12 will rotate together through the transmission cooperation of the first synchronous wheel 13 and the first synchronous belt 14, so that the large pieces of wood chips can be continuously transported upward along the return channel through the rotating turn plate 12, thereby ensuring the stable direction of the large pieces of wood chips.

[0040] A pair of guide plates 17 are fixed to the inner walls of both sides of the box body 1, and guide posts 18 are inserted on the guide plates 17. The guide posts 18 are fixed to the bottom of the screening plate 4, and a reset structure is provided between the screening plate 4 and the guide plates 17;

[0041] It should be noted that, through the sliding cooperation between the guide plate 17 and the guide column 18, the screening plate 4 can be stably limited in the up and down directions, and the screening plate 4 can be driven to reset and move upward through the reset structure.

[0042] In embodiment 1, the reset structure includes a spring 19 sleeved on the guide column 18, and the two ends of the spring 19 are respectively fixed on the screening plate 4 and the guide plate 17;

[0043] It should be noted that, in this way, the elastic force of the spring 19 can be utilized to drive the screening plate 4 to reset and move upward.

[0044] In Embodiment 2, the reset structure includes a first magnetic ring 31 and a second magnetic ring 32 sleeved on the guide plate 17, and the first magnetic ring 31 and the second magnetic ring 32 are fixed on the guide plate 17 and the screening plate 4 respectively;

[0045] It should be noted that, in this way, the magnetic repulsion between the first magnetic ring 31 and the second magnetic ring 32 can be used to drive the screening plate 4 to reset and move upward.

[0046] Furthermore, the bottom ends of the two guide columns 18 on the same side are commonly fixed with a connecting bottom plate 20, the bottom of the connecting bottom plate 20 is rotatably connected with a pair of first connecting rods 21, the bottom ends of the two first connecting rods 21 on the same side are commonly rotatably connected with a push plate 22, the bottom end of the push plate 22 contacts the bottom inner wall of the box body 1, and the two push plates 22 are symmetrically distributed on both sides of the discharge port 9;

[0047] It should be noted that when the guide column 18 moves up and down, the push plate 22 will be driven to move through the first connecting rod 21, and the two push plates 22 will periodically approach each other, thereby pushing the wood chips to the discharge port 9, so that the wood chips are discharged completely.

[0048] Furthermore, a flange turntable 25 located between the two crushing rollers 3 is arranged above the screening plate 4, a first shaft 24 passing through the screening plate 4 is fixedly connected to the bottom of the flange turntable 25, a first fixing rod 23 is rotatably connected to the first shaft 24, the first fixing rod 23 is fixedly connected to the inner wall of the box body 1, a second fixing rod 26 is fixed to the rear end of the box body 1, a second shaft 27 is rotatably connected to the second fixing rod 26, the second shaft 27 and the adjacent ends of an adjacent rotating plate 12 are respectively fixedly sleeved with bevel gears 28, the two bevel gears 28 are meshed and connected, the bottom ends of the second shaft 27 and the first shaft 24 are respectively fixedly sleeved with third synchronous wheels 29, and the two third synchronous wheels 29 are connected by a third synchronous belt 30;

[0049] It should be noted that when the rotating plate 12 rotates, the meshing transmission of the two bevel gears 28 will drive the second shaft rod 27 to rotate, and then the second shaft rod 27 will drive the first shaft rod 24 and the flange turntable 25 to rotate through the transmission cooperation of the third synchronous wheel 29 and the third synchronous belt 30. The rotating flange turntable 25 can use the flange of the outer wall to disperse the qualified wood chips and large wood chips above the screening plate 4 to the outside, thereby strengthening the screening of qualified wood chips and accelerating the large wood chips to enter the return channel.

[0050] Furthermore, a pair of sliding openings 34 symmetrically distributed about the feed opening 8 are provided on the top of the box body 1, a pushing plate 33 is slidably connected below the sliding opening 34, a plurality of second connecting rods 35 are rotatably connected to the outer side of the pushing plate 33, and the other end of the second connecting rod 35 is rotatably connected to the door panel 6;

[0051] It should be noted that when the door panel 6 rotates inward, the pushing plate 33 will be pushed inward through the second connecting rod 35, so that the scraps located between the crushing rollers 3 can be squeezed by the two pushing plates 33, thereby accelerating the scraps to enter between the two crushing rollers 3 and be crushed.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sawdust cleaning device for processing anticorrosive sawdust, comprising a housing (1), characterized in that: The box body (1) is provided with a feed inlet (8) at the top, and a discharge outlet (9) at the bottom. A pair of symmetrically distributed crushing rollers (3) are rotatably connected in the box body (1). A pair of motors (10) are fixed at the rear end of the box body (1). The output shafts of the motors (10) are fixedly connected to the ends of the corresponding crushing rollers (3). A pair of inner guard plates (2) are fixed in the box body (1) to cover the two crushing rollers (3). An inlet (5) is provided at the top of the inner guard plate (2). A fluid inlet (5) is provided in the inlet (5). A door panel (6) is provided in the box body (1) and is located below the two crushing rollers (3). The screening plate (4) is movably connected to the box body (1). The inner guard plate (2) and the part of the box body (1) located above the screening plate (4) together form a return material channel. When crushing, large pieces of wood chips that cannot pass through the screening plate (4) will enter from the bottom outlet of the return material channel under the action of the crushing rollers (3), and then enter again from the inlet (5) to the top of the crushing rollers (3).

2. A sawdust cleaning device for antiseptic sawdust processing according to claim 1, characterized in that: A stopper (7) located outside the door panel (6) is fixed to the bottom inner wall of the inlet (5), and the top end of the door panel (6) is rotatably connected to the inner wall of the inlet (5).

3. The sawdust cleaning device for antiseptic sawdust processing according to claim 1, characterized in that: Both ends of the screening plate (4) are arc-shaped structures, and fixing plates (11) are also fixed on both sides of the top inner wall of the box body (1).

4. The sawdust cleaning device for antiseptic sawdust processing according to claim 1, characterized in that: A plurality of rotating plates (12) rotatably connected to the box body (1) are arranged in the return channel, a pair of first synchronous wheels (13) are fixedly sleeved on the shaft of the rotating plate (12), a group of first synchronous wheels (13) on two adjacent rotating plates (12) are connected by a first synchronous belt (14), and two adjacent first synchronous belts (14) are staggered, a second synchronous wheel (15) is installed on the output shaft of the motor (10), and the second synchronous wheel (15) and a corresponding first synchronous wheel (13) are connected by a second synchronous belt (16).

5. The sawdust cleaning device for antiseptic sawdust processing according to claim 1, characterized in that: A pair of guide plates (17) are respectively fixed to the inner walls on both sides of the box body (1), guide columns (18) are inserted into the guide plates (17), the guide columns (18) are fixed to the bottom of the screening plate (4), and a reset structure is provided between the screening plate (4) and the guide plates (17).

6. The sawdust cleaning device for processing anticorrosive sawdust according to claim 5, characterized in that: The reset structure comprises a spring (19) sleeved on a guide column (18), and two ends of the spring (19) are respectively fixed on the screening plate (4) and the guide plate (17).

7. The sawdust cleaning device for processing anticorrosive sawdust according to claim 5, characterized in that: The reset structure comprises a first magnetic ring (31) and a second magnetic ring (32) which are sleeved on the guide plate (17); the first magnetic ring (31) and the second magnetic ring (32) are respectively fixed on the guide plate (17) and the screening plate (4).

8. The sawdust cleaning device for anticorrosive sawdust processing according to claim 5, characterized in that: A connecting bottom plate (20) is fixed to the bottom ends of the two guide columns (18) on the same side, a pair of first connecting rods (21) are rotatably connected to the bottom of the connecting bottom plate (20), and a push plate (22) is rotatably connected to the bottom ends of the two first connecting rods (21) on the same side, the bottom ends of the push plates (22) are in contact with the bottom inner wall of the box body (1), and the two push plates (22) are symmetrically distributed on both sides of the discharge port (9).

9. The sawdust cleaning device for processing anticorrosive sawdust according to claim 4, characterized in that: A flange turntable (25) located between the two crushing rollers (3) is arranged above the screening plate (4); a first shaft (24) passing through the screening plate (4) is fixedly connected to the bottom of the flange turntable (25); a first fixing rod (23) is rotatably connected to the first shaft (24); the first fixing rod (23) is fixedly connected to the inner wall of the box body (1); a second fixing rod (26) is fixed to the rear end of the box body (1); a second shaft (27) is rotatably connected to the second fixing rod (26); the second shaft (27) and the adjacent ends of an adjacent rotating plate (12) are respectively fixedly sleeved with bevel gears (28); the two bevel gears (28) are meshedly connected; the bottom ends of the second shaft (27) and the first shaft (24) are respectively fixedly sleeved with third synchronous wheels (29); the two third synchronous wheels (29) are connected via a third synchronous belt (30).

10. The sawdust cleaning device for antiseptic sawdust processing according to claim 1, characterized in that: The top of the box body (1) is provided with a pair of sliding openings (34) symmetrically distributed about the feed opening (8); a pushing plate (33) is slidably connected below the sliding opening (34); a plurality of second connecting rods (35) are rotatably connected to the outer side of the pushing plate (33); and the other end of the second connecting rod (35) is rotatably connected to the door panel (6).

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