A wood chip cleaning device for processing preserved wood chips

Abstract

The present application belongs to the technical field of wood chip processing, and particularly relates to a wood chip cleaning device for processing preservative wood chips, which comprises a box body, a feeding port is arranged at the top of the box body, a discharging port is arranged at the bottom of the box body, a pair of symmetrical crushing rollers are rotatably connected in the box body, a pair of motors are fixed at the rear end of the box body, the output shafts of the motors are fixedly connected with the end portions of the corresponding crushing rollers, a pair of inner guard plates are fixed in the box body and wrap the two crushing rollers, an inlet is formed at the top of the inner guard plate, a door plate capable of rotating inwardly and being opened is arranged in the inlet, a screening plate is arranged in the box body and located below the two crushing rollers, the screening plate is movably connected with the box body, and the part of the inner guard plate and the box body above the screening plate jointly forms a return channel. In the present application, during crushing, the large wood chips that cannot pass through the screening plate will enter the bottom outlet of the return channel under the action of the crushing rollers, and then enter the upper side of the crushing rollers again through the inlet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wood chip processing, and particularly relates to a wood chip cleaning device for processing of preservative wood chips. BACKGROUND

[0002] The preservative wood chip is a kind of wood material with preservative performance after special treatment, which is applied in the field of gardening as a gardening covering, and can be laid on the surface of flower beds, flowerpots or trees, and can be used as ground laying material in landscape engineering or outdoor leisure area, and can be used as filling material in industrial packaging of some industrial products with preservative requirements for packaging materials.

[0003] The preservative wood chip is mainly made of wood chip or leftover material after wood processing, which is treated to change waste into treasure and reduce the environmental pressure of wood waste. The existing wood chip cleaning equipment is generally difficult to crush the leftover material into qualified wood chips in a single crushing, so manual intervention is required to crush repeatedly, which reduces the crushing efficiency. Therefore, corresponding improvement is made for the problem. SUMMARY

[0004] Based on the technical problems existing in the prior art, the present application provides a wood chip cleaning device for processing of preservative wood chips.

[0005] The wood chip cleaning device for processing preservative wood chips provided by the application comprises a box body, an inlet is arranged at the top of the box body, an outlet is arranged at the bottom of the box body, a pair of symmetrical crushing rollers are rotatably connected in the box body, a pair of motors are fixed at the rear end of the box body, the output shafts of the motors are fixedly connected with the end portions of the corresponding crushing rollers, a pair of inner guard plates covering the two crushing rollers are fixed in the box body, an inlet is arranged at the top of the inner guard plate, a door plate capable of rotating inward and opening is arranged in the inlet, a screening plate is arranged below the two crushing rollers in the box body, the screening plate is movably connected with the box body, the part of the inner guard plate and the box body above the screening plate jointly forms a return channel, when crushing, the large wood chips that cannot pass through the screening plate will enter the bottom outlet of the return channel under the action of the crushing rollers, and then enter the upper side of the crushing rollers again from the inlet; the wood scraps are poured into the box body from the inlet, then the output shafts of the two motors drive the two crushing rollers to rotate, the wood scraps are crushed into wood chips, the qualified wood chips fall along the screening plate, and then are discharged from the outlet, the large wood chips that are not completely crushed stay above the screening plate, the crushing rollers will push the large wood chips outward when rotating, then the large wood chips will enter the bottom outlet of the return channel, push away the door plate from the inlet and enter the upper side of the crushing rollers again, and then are cyclically crushed, so that the effect of complete crushing is achieved, and when the large wood chips are pushed by the crushing rollers, the downward force is also generated on the screening plate, then the screening plate moves up and down, on the one hand, the larger space is provided for the large wood chips, so that the large wood chips can enter the return channel, and on the other hand, the generated vibration can accelerate the screening of the wood chips.

[0006] Preferably, the bottom inner wall of the inlet is fixed with a stop block located outside the door plate, and the top end of the door plate is rotatably connected with the inner wall of the inlet; in this way, the large wood chips can push the door plate inward, and the wood scraps originally above the crushing rollers can also be prevented from entering the return channel from the inlet.

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

[0008] Preferably, a plurality of rotating plates connected with the box are arranged in the return material channel, a pair of first synchronous wheels are fixed on the shaft of the rotating plate, a group of first synchronous wheels on two adjacent rotating plates are connected through a first synchronous belt, two adjacent first synchronous belts are distributed staggeredly, a second synchronous wheel is installed on the output shaft of the motor, and the second synchronous wheel and the corresponding first synchronous wheel are connected through a second synchronous belt; when the output shaft of the motor rotates, the corresponding rotating plate is driven to rotate through the second synchronous wheel and the second synchronous belt, and then the plurality of rotating plates are driven to rotate together through the transmission cooperation of the first synchronous wheels and the first synchronous belts, so that the large wood chips can be continuously conveyed upward along the return material channel through the rotating rotating plate, thereby ensuring the stable movement of the large wood chips.

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

[0010] Preferably, the reset structure comprises a spring sleeved on the guide column, and the two ends of the spring are fixed on the screening plate and the guide plate, respectively; in this way, the spring force of the spring can be used to drive the screening plate to move upwardly.

[0011] Preferably, the reset structure comprises a first magnetic ring and a second magnetic ring sleeved on the guide plate, and the first magnetic ring and the second magnetic ring are fixed on the guide plate and the screening plate, respectively; 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 move upwardly.

[0012] Preferably, the bottom ends of the two guide columns on the same side are fixed with a connecting bottom plate, a pair of first connecting rods are rotatably connected to the bottom of the connecting bottom plate, the bottom ends of the two first connecting rods on the same side are rotatably connected with a push plate, the bottom end of the push plate is in contact with the inner wall of the bottom of the box, and the two push plates are symmetrically distributed on both sides of the discharge port; when the guide columns move up and down, the push plate is driven to move through the first connecting rods, and the two push plates are periodically close to each other, so as to push the wood chips to the discharge port, thereby making the wood chips discharge completely.

[0013] Preferably, a flange rotating disc is arranged above the screening plate between the two crushing rollers, the bottom of the flange rotating disc is fixedly connected with a first shaft rod penetrating through the screening plate, the first shaft rod is rotatably connected with a first fixed rod, the first fixed rod is fixedly connected with the inner wall of the box body, the rear end of the box body is fixedly connected with a second fixed rod, the second fixed rod is rotatably connected with a second shaft rod, the adjacent ends of the second shaft rod and the adjacent end of an adjacent rotating disc are respectively fixedly sleeved with bevel gears, the two bevel gears are meshingly connected, the bottom ends of the second shaft rod and the first shaft rod are respectively fixedly sleeved with third synchronous wheels, and the two third synchronous wheels are connected through a third synchronous belt; when the rotating disc rotates, the second shaft rod is driven to rotate through the meshing transmission of the two bevel gears, and then the first shaft rod and the flange rotating disc are driven to rotate through the transmission matching of the third synchronous wheels and the third synchronous belt; the flange rotating disc in rotation can disperse the qualified sawdust and large wood chips above the screening plate to the outside through the flanges on the outer wall, and the screening of the qualified sawdust and the acceleration of the large wood chips into the return channel can be enhanced.

[0014] Preferably, a pair of sliding openings are arranged on the top of the box body and symmetrically distributed about the feeding port, the lower side of the sliding opening is slidably connected with a pushing plate, the outer side of the pushing plate is rotatably connected with a plurality of second connecting rods, and the other end of the second connecting rod is rotatably connected with a door plate; when the door plate rotates inwards, the pushing plate is pushed inwards through the second connecting rod, so that the two pushing plates can extrude the corner materials between the crushing rollers, thereby accelerating the corner materials to enter the crushing rollers.

[0015] Compared with the prior art, the wood chip cleaning device for processing of preservative wood chips has the following beneficial effects:

[0016] 1. A wood chip cleaning device for processing of preservative wood chips, by arranging a screening plate and a return channel, when the crushing roller rotates, the large wood chips that are not completely crushed are pushed outwards, then the large wood chips enter the upper side of the crushing roller from the bottom outlet of the return channel, and are cyclically crushed, so that the crushing effect is achieved, and when the large wood chips are pushed by the crushing roller, the screening plate moves up and down, on the one hand, a larger space is provided for the large wood chips, and the large wood chips are conveniently fed into the return channel, and on the other hand, the screening of the wood chips is accelerated through the generated vibration.

[0017] 2. A wood chip cleaning device for processing of preservative wood chips, by arranging a rotating disc, when the motor output shaft rotates, the rotating disc is driven to rotate, so that the large wood chips are continuously fed upwards along the return channel through the rotating rotating disc, thereby ensuring the stable movement of the large wood chips.

[0018] 3. The wood chip cleaning device for processing of preservative-treated wood chips, by setting the flange rotating disc, the rotating disc drives the flange rotating disc to rotate, the rotating flange rotating disc can use the flange of the outer wall to disperse the qualified wood chips and large wood chips above the screening plate to the outside, so as to strengthen the screening of qualified wood chips and accelerate the large wood chips into the return channel.

[0019] 4. The wood chip cleaning device for processing of preservative-treated wood chips, by setting the pushing plate, when the door plate rotates inward, the pushing plate is pushed inward through the second connecting rod, so that the two pushing plates can extrude the leftover materials between the crushing rollers, thereby accelerating the leftover materials into the crushing rollers. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall structure schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0021] Figure 2 The internal structure schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0022] Figure 3 The internal structure schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0023] Figure 4 The wood chip moving process schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0024] Figure 5 The wood chip moving process schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided. Figure 1

[0025] Figure 6 The wood chip moving process schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0026] Figure 7 The wood chip moving process schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0027] Figure 8 The wood chip moving process schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0028] Figure 9 The wood chip moving process schematic diagram of the wood chip cleaning device for processing of preservative-treated wood chips is provided.

[0029] ​In the figure: 1, box; 2, inner guard plate; 3, crushing roller; 4, screening plate; 5, inlet; 6, door plate; 7, stop block; 8, feed inlet; 9, discharge outlet; 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; 25, flange rotating disc; 26, second fixed rod; 27, second shaft; 28, bevel gear; 29, third synchronous wheel; 30, third synchronous belt; 31, first magnetic ring; 32, second magnetic ring; 33, push plate; 34, sliding port; 35, second connecting rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] Reference Figures 1-9 A wood chip cleaning device for processing decayed wood chips, comprising a box 1, the box 1 is provided with a feed inlet 8 at the top, the bottom of the box 1 is provided with a discharge outlet 9, a pair of symmetrical crushing rollers 3 are rotatably connected in the box 1, a pair of motors 10 are fixed to the rear end of the box 1, the output shafts of the motors 10 are fixedly connected with the end portions of the corresponding crushing rollers 3, a pair of inner guard plates 2 are fixed in the box 1 and cover the two crushing rollers 3, an inlet 5 is formed in the top of the inner guard plate 2, a door plate 6 capable of rotating inwardly and opening is arranged in the inlet 5, a screening plate 4 is arranged in the box 1 below the two crushing rollers 3, the screening plate 4 is movably connected with the box 1, the part of the inner guard plate 2 and the box 1 above the screening plate 4 jointly forms a return channel, during crushing, the large wood chips 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 upper part of the crushing rollers 3 again from the inlet 5;

[0033] It should be noted that the wood scraps are poured into the box 1 from the inlet 8, and then the output shafts of the two motors 10 drive the two crushing rollers 3 to rotate, crushing the scraps into sawdust, and the qualified sawdust falls along the screening plate 4, and then is discharged from the discharge port 9. The large pieces of wood that are not completely crushed stay above the screening plate 4, and when the crushing rollers 3 rotate, they will push the large pieces of wood outward, and then the large pieces of wood will enter the return channel from the bottom outlet, and then push the door plate 6 from the inlet 5 to enter the upper part of the crushing roller 3 again, and then be crushed in a cycle, so as to achieve the effect of complete crushing. When the large pieces of wood 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 provide more space for the large pieces of wood to enter the return channel, and on the other hand, it can accelerate the screening of the sawdust through the generated vibration.

[0034] The bottom inner wall of the inlet 5 is fixed with a stop block 7 located outside the door plate 6, and the top end of the door plate 6 is rotatably connected with the inner wall of the inlet 5.

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

[0036] Further, the two ends of the screening plate 4 are arc-shaped structures, and the two sides of the top inner wall of the box 1 are also fixed with fixed plates 11.

[0037] It should be noted that this can make the corners of the return channel form a smooth structure, so that the movement of the large pieces of wood in the return channel is more smooth.

[0038] Further, a plurality of rotating plates 12 rotatably connected with the box 1 are arranged in the return channel, a pair of first synchronous wheels 13 are fixedly arranged on the shaft of the rotating plate 12, a group of first synchronous wheels 13 on adjacent two rotating plates 12 are connected through a first synchronous belt 14, adjacent two first synchronous belts 14 are distributed in a staggered manner, a second synchronous wheel 15 is installed on the output shaft of the motor 10, and the second synchronous wheel 15 and the corresponding first synchronous wheel 13 are connected through 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 rotating plate 12 to rotate through the second synchronous wheel 15 and the second synchronous belt 16, and then the plurality of rotating plates 12 will rotate together through the transmission cooperation of the first synchronous wheel 13 and the first synchronous belt 14. In this way, the rotating rotating plate 12 can continuously convey the large pieces of wood upward along the return channel, so as to ensure the stable movement of the large pieces of wood.

[0040] The two inner walls of the box body 1 are respectively fixed with a pair of guide plates 17, guide columns 18 are inserted on the guide plates 17, the guide columns 18 are fixed at the bottom of the screening plate 4, and a reset structure is arranged between the screening plate 4 and the guide plate 17.

[0041] It should be noted that the sliding cooperation of the guide plate 17 and the guide column 18 can stably position the screening plate 4 in the up-down direction, and the reset structure can drive the screening plate 4 to move upwardly.

[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 the spring force of the spring 19 can drive the screening plate 4 to move upwardly.

[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 respectively fixed on the guide plate 17 and the screening plate 4.

[0045] It should be noted that the magnetic repulsion between the first magnetic ring 31 and the second magnetic ring 32 can drive the screening plate 4 to move upwardly.

[0046] Further, the bottom ends of the two guide columns 18 on the same side are commonly fixed with a connecting bottom plate 20, the connecting bottom plate 20 is rotationally connected with a pair of first connecting rods 21 at the bottom, the bottom ends of the two first connecting rods 21 on the same side are commonly rotationally connected with a push plate 22, the bottom end of the push plate 22 is in contact with the inner wall of the bottom of the box body 1, and the two push plates 22 are symmetrically distributed on the two 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 is driven to move through the first connecting rod 21, and the two push plates 22 are periodically close to each other, so as to push the wood chips to the discharge port 9, thereby completely discharging the wood chips.

[0048] Further, a flange rotating disc 25 located between the two crushing rollers 3 is arranged above the screening plate 4, the flange rotating disc 25 is fixedly connected with a first shaft rod 24 penetrating through the screening plate 4, the first shaft rod 24 is rotationally connected with a first fixed rod 23, the first fixed rod 23 is fixedly connected with the inner wall of the box body 1, a second fixed rod 26 is fixed at the rear end of the box body 1, a second shaft rod 27 is rotationally connected with the second fixed rod 26, a bevel gear 28 is fixedly sleeved on the adjacent end of the second shaft rod 27 and the adjacent end of an adjacent rotating plate 12, the two bevel gears 28 are meshingly connected, a third synchronous wheel 29 is fixedly sleeved on the bottom end of the second shaft rod 27 and the first shaft rod 24, and the two third synchronous wheels 29 are connected through a third synchronous belt 30.

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

[0050] Further, a pair of sliding openings 34 are formed on the top of the box body 1 and symmetrically distributed about the feed port 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 outside of the pushing plate 33. The other end of the second connecting rod 35 is rotatably connected to the door plate 6.

[0051] It should be noted that when the door plate 6 rotates inward, the pushing plate 33 will be pushed inward through the second connecting rod 35. In this way, the two pushing plates 33 can extrude the leftover material between the crushing rollers 3, so as to accelerate the leftover material into the two crushing rollers 3 to be crushed.

[0052] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A wood chip cleaning device for processing of preserved wood chips, comprising a housing (1), characterized in that The box (1) top is equipped with feed inlet (8), the bottom of box (1) is equipped with discharge port (9), the box (1) is rotatably connected with a pair of symmetrical distribution of the pulverizer roller (3), the rear end of box (1) is fixed with a pair of motor (10), the output shaft of motor (10) is fixedly connected with the end of corresponding pulverizer roller (3), the box (1) is fixed with a pair of the inner guard plate (2) that two pulverizer roller (3) are covered, the top of inner guard plate (2) is equipped with inlet (5), the inlet (5) is provided with the door plate (6) that can be rotated to the inside and open, the box (1) is provided with the screening plate (4) below two pulverizer roller (3), the screening plate (4) and box (1) are movably connected, the inner guard plate (2) and the part of box (1) above screening plate (4) form the return material passage together, when pulverizing, the large wood chips that cannot pass through screening plate (4) will enter from the bottom outlet of return material passage under the action of pulverizer roller (3), then from inlet (5) again enter the above of pulverizer roller (3); The both ends of screening plate (4) are arc-shaped structure, and the both sides of the inner wall of the top of box (1) are also fixed with fixed plate (11); The return material passage is provided with a plurality of rotation plates (12) rotatably connected with box (1), a pair of first synchronous wheels (13) are fixedly arranged on the shaft of rotation plate (12), a group of first synchronous wheels (13) on adjacent two rotation plates (12) are connected by first synchronous belt (14), adjacent two first synchronous belts (14) are distributed staggeredly, second synchronous wheel (15) is installed on the output shaft of motor (10), second synchronous wheel (15) and corresponding first synchronous wheel (13) are connected by second synchronous belt (16); The screening plate (4) is provided with flange turntable (25) between two pulverizer roller (3) above, flange turntable (25) is fixedly connected with first shaft rod (24) penetrating through screening plate (4), first shaft rod (24) is rotatably connected with first fixed rod (23), first fixed rod (23) is fixedly connected with the inner wall of box (1), the rear end of box (1) is fixed with second fixed rod (26), second fixed rod (26) is rotatably connected with second shaft rod (27), second shaft rod (27) and the adjacent end of adjacent rotation plate (12) are respectively fixedly provided with bevel gears (28), two bevel gears (28) are meshedly connected, second shaft rod (27) and the bottom end of first shaft rod (24) are respectively fixedly provided with third synchronous wheel (29), two third synchronous wheels (29) are connected by third synchronous belt (30).

2. A wood chip cleaning device for preventing decay of wood chips for wood chip processing according to claim 1, characterized in that, The bottom inner wall of inlet (5) is fixed with stop block (7) located outside door plate (6), the top end of door plate (6) is rotatably connected with the inner wall of inlet (5).

3. A wood chip cleaning device for preventing decay of wood chips for wood chip processing according to claim 1, characterized in that, The inner wall of the both sides of box (1) is respectively fixed with a pair of guide plates (17), guide column (18) is inserted in guide plate (17), guide column (18) is fixed in the bottom of screening plate (4), reset structure is arranged between screening plate (4) and guide plate (17).

4. A wood chip cleaning device for use in the processing of preservative-treated wood chips according to claim 3, characterized in that The reset structure comprises a spring (19) sleeved on the guide column (18), and two ends of the spring (19) are fixed on the screening plate (4) and the guide plate (17) respectively.

5. A wood chip cleaning device for preventing decay of wood chips for wood chip processing according to claim 3, characterized in that, The reset structure comprises 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.

6. A wood chip cleaning device for preventing decay of wood chips for wood chip processing according to claim 3, characterized in that, The bottom ends of the two guide columns (18) on the same side are fixed with a connecting bottom plate (20) in common, the 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 rotatably connected with a push plate (22), the bottom end of the push plate (22) is in contact with the inner wall of the bottom of the box body (1), and the two push plates (22) are symmetrically distributed on the two sides of the discharge port (9).

7. A wood chip cleaning device for preventing decay of wood chips for wood chip processing according to claim 1, characterized in that, A pair of slide openings (34) are formed on the top of the box body (1) and symmetrically distributed about the feeding port (8), a push plate (33) is slidably connected below the slide opening (34), a plurality of second connecting rods (35) are rotatably connected to the outer side of the push plate (33), and the other ends of the second connecting rods (35) are rotatably connected with the door plate (6).

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