U-shaped curved surface material adjusting and buffering funnel device

Abstract

The invention relates to the technical field of funnel devices, and discloses a U-shaped curved surface material adjusting and buffering funnel device which comprises a tripper car head funnel, the tripper car head funnel is inserted into a central buffering funnel, and the bottom of the central buffering funnel is connected with a material guide groove through a rail; the material guide groove comprises a funnel wall, the inner wall of the funnel wall is rotationally connected with a U-shaped material adjusting plate, the U-shaped material adjusting plate is composed of two arc-shaped plates which are symmetrical to each other, the two arc-shaped plates are rotationally connected through a buckle, an included angle is formed in the connecting position of the two arc-shaped plates, and the outer walls of the two arc-shaped plates are fixedly connected with connecting rods; and electric push rods are installed at the tops of the two sides of the funnel wall correspondingly, the ends of telescopic rods of the electric push rods are rotationally connected with rotating buckles, and the rotating buckles are rotationally connected with the connecting rods. The angle of the U-shaped material adjusting plate is adjusted through the electric push rod, then the material falling position of materials on a belt conveyor below is changed, and meanwhile the maximum passing capacity of the materials can be changed.

Description

Technical Field

[0001] The invention relates to the technical field of funnel devices, in particular to a U-shaped curved surface material regulating and buffering funnel device. Background Art

[0002] The stacker buffer hopper is a device used for stacking operations. Its main function is to achieve uniform stacking of materials and reduce the impact of materials during the falling process through a specific design, so as to achieve uniform stacking of materials and improve operating efficiency. It effectively solves various problems in the material stacking process through two-level buffering, self-sealing and floating buffering devices.

[0003] At present, the main form of the central buffer funnel of this type of stacker is a buffer funnel with a fixed baffle. The drop point of this buffer funnel cannot be adjusted. Different materials have different drop points on the belt, resulting in the material not falling into the middle area of ​​the belt, which generates lateral deviation force on the belt, causing the belt to deviate and scatter material. In severe cases, the machine will shut down. When the stacker cantilever rotates, the drop point of the material on the belt will also change, aggravating this problem, and the maximum material throughput capacity is also fixed and cannot be changed. Summary of the invention

[0004] The object of the present invention is to provide a U-shaped curved surface material regulating buffer funnel device to solve at least one technical problem existing in the above-mentioned prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: a U-shaped curved surface material regulating buffer funnel device, comprising a tail car head funnel, the tail car head funnel is plugged into a central buffer funnel, and the bottom of the central buffer funnel is connected to a material guide trough through a track;

[0006] The material guide trough includes a funnel wall, the inner wall of the funnel wall is rotatably connected to a U-shaped seasoning plate, the U-shaped seasoning plate is composed of two symmetrical arc panels, the two arc panels are rotatably connected by buckles, and an angle is provided at the connection between the two arc panels, the outer walls of the two arc panels are fixedly connected to connecting rods, electric push rods are installed on the tops of both sides of the funnel wall, the ends of the telescopic rods of the electric push rods are rotatably connected to rotating buckles, and the rotating buckles are rotatably connected to the connecting rods.

[0007] Preferably, the arc panel comprises an outer shell, the inner arc surface of the outer shell is wrapped with an elastic layer, a mesh grid is provided on the fitting surface of the elastic layer and the outer shell, and the mesh grid has transverse warps and longitudinal wefts, a connecting column connecting the elastic layer and the outer shell is provided at a grid node of the mesh grid located on one of the warps, a supporting column fixed on the elastic layer is provided at a grid node of the mesh grid located on another warp, adjacent connecting columns are connected to the supporting columns by connecting buckles, and the connecting buckles are located on the longitudinal wefts of the mesh grid;

[0008] A connecting rope is commonly connected between the two curved panels, and the two ends of the connecting rope sequentially connect the support columns on the same warp line, and at least half of the cross section of the connecting rope is embedded in the elastic layer;

[0009] It also includes a reset component, which is used to reset the connecting rope after it moves.

[0010] Preferably, there are multiple groups of warps where the connecting columns and the supporting columns are located, and they are arranged alternately.

[0011] Preferably, there are multiple groups of warps where the support columns are located, and they are arranged in sequence, and two adjacent support columns are also connected by connecting buckles.

[0012] Preferably, the reset assembly includes a piston body fixedly connected to the fitting surface of the outer shell and the elastic layer, the inner wall of the piston body is slidably connected to a piston plate, the connecting rope passes through the piston body and is fixedly connected to the piston plate, and the outer wall of the piston plate away from the connecting rope is fixedly connected to the inner wall of the piston body with a spring.

[0013] Preferably, the inner wall of the piston cavity of the piston body is connected with a vent pipe, and the vent pipe is communicated with the interior of all the connecting columns, and a protruding block is slidably installed inside the connecting column.

[0014] Preferably, a length is reserved for the connecting rope at the angle between the two curved panels.

[0015] Preferably, the U-shaped seasoning plate is a U-shaped curved surface structure, and the bottom edge of the U-shaped seasoning plate forms an upward angle of 5-10 degrees with the horizontal direction.

[0016] Preferably, the front side of the tail car head hopper is connected with an inspection door via a hinge.

[0017] Preferably, a lining plate is fixedly connected to the inner wall of the material guide trough, and a material guide trough leather is fixedly connected to the surface of the lining plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention adjusts the angle of the U-shaped seasoning plate through an electric push rod, so that the position and opening size of the U-shaped seasoning plate are changed, thereby changing the drop position of the material on the belt conveyor below. At the same time, the maximum passing capacity of the material can also be changed by adjusting the angle of the U-shaped seasoning plate.

[0020] 2. The present invention drives the elastic layer to deform by the connecting rope and the internal protrusion of the support column drives the elastic layer to protrude, thereby completing the cleaning of the materials adhering to the inner wall of the buffer funnel, preventing the funnel wall from becoming thicker and causing the passage space of the materials to be reduced, thereby preventing the accumulation of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0022] Figure 2 A three-dimensional diagram of a U-shaped seasoning plate of the present invention;

[0023] Figure 3 A three-dimensional diagram of a U-shaped seasoning plate of the present invention after a portion of the outer shell is removed;

[0024] Figure 4 A half-section view of a U-shaped seasoning plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the piston body structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the present invention when the protruding block is not ejected;

[0027] Figure 7 It is a schematic diagram of the structure of the protruding block of the present invention when it is ejected;

[0028] Figure 8 This is a schematic diagram of the elastic layer after the U-shaped seasoning plate is separated in Example 1 of the present invention;

[0029] Fig. 9 It is a schematic diagram of the elastic layer when the U-shaped mixing plate of the present invention is closed;

[0030] Fig.10 It is a schematic diagram of the elastic layer after the U-shaped seasoning plate in the second embodiment of the present invention is separated.

[0031] In the figure: 1. tail car head funnel; 2. center buffer funnel; 3. material guide trough; 4. funnel wall; 5. arc panel; 6. connecting rod; 7. rotating buckle; 8. electric push rod; 9. elastic layer; 10. shell; 11. mesh grid; 12. connecting rope; 13. connecting buckle; 14. piston body; 15. ventilation pipe; 16. connecting column; 17. supporting column; 18. piston plate; 19. spring; 20. raised block; 21. inspection door; 22. lining plate; 23. material guide trough leather. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 10The present invention provides a technical solution: a U-shaped curved surface material regulating buffer funnel device, comprising a tail car head funnel 1, the tail car head funnel 1 is plugged into a central buffer funnel 2, and the bottom of the central buffer funnel 2 is connected to a material guide trough 3 through a track;

[0034] The material guide trough 3 includes a funnel wall 4, the inner wall of the funnel wall 4 is rotatably connected to a U-shaped seasoning plate, the U-shaped seasoning plate is composed of two symmetrical arc panels 5, the two arc panels 5 are rotatably connected by a buckle, and an angle is provided at the connection between the two arc panels 5, the outer walls of the two arc panels 5 are fixedly connected to a connecting rod 6, and electric push rods 8 are installed on the top of both sides of the funnel wall 4, the end of the telescopic rod of the electric push rod 8 is rotatably connected to a rotating buckle 7, and the rotating buckle 7 is rotatably connected to the connecting rod 6.

[0035] At present, the drop point of the existing buffer hopper cannot be adjusted. Different materials have different drop points on the belt, which causes the material to not fall into the middle area of ​​the belt, generating lateral deviation force on the belt, causing the belt to deviate and scatter material. In serious cases, the machine will stop. When the stacker cantilever rotates, the drop point of the material on the belt will also change, exacerbating this problem. In addition, the maximum material throughput capacity is fixed and cannot be changed. The limited throughput capacity of materials with low density and large volume can easily cause the hopper to be blocked, affecting the operation efficiency. Therefore, in this case, the main solution is to solve the problem that the drop point of the buffer hopper in the center of the stacker cannot be adjusted, which causes the belt conveyor to deviate, scatter material, block material, and tear the belt, so as to improve the production efficiency of material transportation. The specific methods are as follows:

[0036] When the material enters the tail car head funnel 1 through the belt conveyor, the material is adjusted, gathered and diverted before falling onto the U-shaped seasoning plate of the central buffer funnel 2. The electric push rod 8 can adjust the angle of the U-shaped seasoning plate through the cooperation of the connecting rod 6 and the rotating buckle 7, so that the position and opening size of the U-shaped seasoning plate are changed, thereby changing the material drop position on the belt conveyor below. At the same time, the maximum material passing capacity can also be changed by adjusting the angle of the U-shaped seasoning plate.

[0037] Furthermore, the arc panel 5 includes an outer shell 10, the inner arc surface of the outer shell 10 is wrapped with an elastic layer 9, a mesh grid 11 is provided on the fitting surface of the elastic layer 9 and the outer shell 10, and the mesh grid 11 has transverse warps and longitudinal wefts, a connecting column 16 connecting the elastic layer 9 and the outer shell 10 is provided at a grid node of the mesh grid 11 located on one of the warps, a supporting column 17 fixed to the elastic layer 9 is provided at a grid node of the mesh grid 11 located on another warp, and adjacent connecting columns 16 and supporting columns 17 are connected by connecting buckles 13, and the connecting buckles 13 are located on the longitudinal weft of the mesh grid 11;

[0038] A connecting rope 12 is commonly connected between the two curved panels 5, and the two ends of the connecting rope 12 sequentially connect the support columns 17 of the same warp, and at least half of the cross section of the connecting rope 12 is embedded in the elastic layer 9;

[0039] It also includes a reset component, which is used to reset the connecting rope 12 after it moves.

[0040] When used to unload highly viscous powdered materials, due to their small particles and high viscosity, the materials are easily adhered to the inner wall of the seasoning plate (i.e., the arc plate 5), especially in coastal areas such as ports. The materials are easily agglomerated after being combined with water vapor in the air and damp, resulting in the continuous thickening of the seasoning plate, which causes the passage space of the materials to be continuously reduced, resulting in material accumulation. Sprinkling water to remove dust is not suitable for this type of material, and manual cleaning of the accumulated materials is difficult and dangerous. Therefore, in this embodiment, a method for cleaning the surface adhesive layer of the seasoning plate is provided, which is as follows:

[0041] It can be seen from the above content that when the angle of the U-shaped seasoning plate is adjusted by the electric push rod 8, the two arc panels 5 of the U-shaped seasoning plate will rotate in opposite directions. Because the two arc panels 5 are commonly connected with a connecting rope 12, and at least half of the cross section of the connecting rope 12 is embedded in the elastic layer 9, when the arc panels 5 rotate in the opposite direction, the elastic layer 9 will be pulled by the connecting rope 12 and deformed, so that the material is not easy to adhere to the surface of the elastic layer 9 when falling, and due to the deformation of the elastic layer 9, the adhesion contact area between the adhesion layer adhered to the surface and the elastic layer 9 can be reduced. At the same time, the lateral pulling of the elastic layer 9 can exert a certain shear force on the adhesion layer, so that the adhesion layer can be more easily separated from the surface of the elastic layer 9, so as to achieve the purpose of reducing the continuous accumulation of materials on the seasoning plate;

[0042] On the contrary, when the two arc panels 5 are relatively rotated and closed, the connecting rope 12 will be reset under the action of the reset component and the elastic layer 9 will be restored. In this way, if a powdery material with high viscosity is adhered, the adhesive layer on the surface of the elastic layer 9 can be removed by opening and closing the arc panels 5 multiple times.

[0043] Embodiment 1: In order to further improve the deformation degree of the elastic layer 9, an implementation method of the installation position and arrangement of the connecting column 16 and the supporting column 17 is provided. Figure 8 ;

[0044] There are multiple groups of warps where the connecting columns 16 and the supporting columns 17 are located, and they are arranged alternately.

[0045] When the arc panel 5 moves in the opposite direction: since the connecting column 16 and the elastic layer 9 shell 10 are fixedly connected, the transverse warp where the connecting column 16 is located will not move; and the supporting column 17 is only connected to the elastic layer 9, and the two ends of the connecting rope 12 connect the supporting columns 17 on the same warp in turn, so the transverse warp where the supporting column 17 is located will be pulled by the connecting rope 12, thereby causing the entire elastic layer 9 to deform more, and the farther away from the angle vertex position, the higher the degree of pulling of the connecting rope 12, which means that the corresponding elastic layer 9 position will have a greater degree of deformation, so the force degree at different horizontal height positions is different, so the shear force between the elastic layer 9 and the surface adhesion layer at different positions will also be different. In this way, if it is a whole piece of adhesion layer, then the detachment of its local position can also play a joint role in the remaining adhesion parts, and thus can more effectively prevent the accumulation of materials on the seasoning plate.

[0046] Moreover, it is worth mentioning that when the connecting rope 12 drives the connecting buckle 13 to be pulled obliquely, in the vertical direction, the two adjacent support columns 17 will also be subjected to vertical and oblique pulling forces, so that the surface of the elastic layer 9 will also have elastic deformation in the vertical direction, thereby further enhancing its deformation shearing effect, and further allowing the adhesion layer to detach faster.

[0047] in, Fig. 9 This is the state after the two arc panels 5 are closed, and at this time the connecting rope 12 and the elastic layer 9 are both in a restored state.

[0048] Embodiment 2: In order to further improve the deformation degree of the elastic layer 9, a second embodiment of the installation position and arrangement of the connecting column 16 and the supporting column 17 is provided. Fig.10 ;

[0049] Furthermore, there are multiple groups of support columns 17 along the warp lines, which are arranged in sequence, and two adjacent support columns 17 are also connected via the connecting buckles 13 .

[0050] As can be seen from the above content, the farther away from the angle vertex position, the greater the pulling degree of the connecting rope 12. Therefore, in this embodiment, when the curved panel 5 moves in the opposite direction, the supporting column 17 will be pulled by the connecting rope 12, so that the elastic layer 9 is deformed as a whole, and the elastic deformation of the elastic layer 9 is greater as it is closer to the bottom, thereby achieving the above-mentioned effect of making the adhesive layer detach faster.

[0051] It is worth noting that the connecting buckle 13 can be made of elastic or non-elastic material.

[0052] Furthermore, the reset assembly includes a piston body 14 fixedly connected to the fitting surface of the outer shell 10 and the elastic layer 9, the inner wall of the piston body 14 is slidably connected to a piston plate 18, the connecting rope 12 passes through the piston body 14 and is fixedly connected to the piston plate 18, and the outer wall of the piston plate 18 away from the connecting rope 12 is fixedly connected to the inner wall of the piston body 14 with a spring 19.

[0053] When the arc panel 5 rotates in the opposite direction, the connecting rope 12 will not only pull the elastic layer 9 to deform, but also pull the piston plate 18 inside the piston body 14. Figure 5 As shown, when the connecting rope 12 pulls the piston plate 18, the piston plate 18 drives the spring 19 to move, causing it to stretch and accumulate elastic potential energy, thereby providing a pulling force for the subsequent resetting of the connecting rope 12;

[0054] When the arc panel 5 is closed, the spring 19 will pull the piston plate 18 to perform a reset movement, thereby causing the connecting rope 12 to drive the elastic layer 9 to reset.

[0055] Furthermore, a vent pipe 15 is connected to the inner wall of the piston cavity of the piston body 14 , and the vent pipe 15 is communicated with the interior of all the connecting columns 16 , and a protruding block 20 is slidably installed inside the connecting column 16 .

[0056] As can be seen from the above content, when the arc panel 5 moves in the opposite direction, the connecting rope 12 pulls the piston plate 18 to move. At this time, the air in the cavity of the piston plate 18 will be compressed and enter the interior of the connecting column 16 through the vent pipe 15. Figure 7 As shown, under the action of the air pressure on the inner wall of the connecting column 16, the protruding block 20 will be pushed out, thereby lifting the elastic layer 9, thereby reducing the contact area between the elastic layer 9 and the adhesive layer, making it easier for the lumps attached to the elastic layer 9 to fall off.

[0057] Furthermore, a length is reserved for the connection rope 12 at the angle between the two curved panels 5 .

[0058] The reserved length of the connecting rope 12 at the angle between the two arc panels 5 can effectively prevent the connecting rope 12 from breaking during operation, and can also prevent the elastic layer 9 from being subjected to excessive pulling force, thereby playing a certain protective role thereon.

[0059] Furthermore, the U-shaped seasoning plate is a U-shaped curved surface structure rather than a flat structure, and the bottom edge of the U-shaped seasoning plate forms an upward angle of 5-10 degrees with the horizontal direction.

[0060] The optimal upward angle between the bottom edge of the U-shaped curved funnel and the horizontal direction is 8 degrees. The advantage of this design is that it can play a good role in adjusting the material gathering effect under a very small electric push rod 8 stroke displacement, and can play a role in guiding the material toward the direction of the belt conveyor below. The bottom edge of the U-shaped curved funnel forms an upward angle of 8° with the horizontal direction, which can effectively prevent block materials from getting stuck under the funnel and tearing the belt under the funnel.

[0061] Furthermore, the front side of the tail car head hopper 1 is connected with an inspection door 21 through a hinge.

[0062] Providing the inspection door 21 can make it more convenient for workers to maintain and repair equipment, which not only improves work efficiency but also greatly improves safety.

[0063] Furthermore, a lining plate 22 is fixedly connected to the inner wall of the material guide trough 3 , and a material guide trough leather 23 is fixedly connected to the surface of the lining plate 22 .

[0064] Working principle: When the U-shaped curved surface material regulating buffer funnel device is used, the material enters the tail car head funnel 1 through the belt conveyor, and the material is adjusted, gathered and diverted and then falls onto the U-shaped seasoning plate of the central buffer funnel 2. At the same time, the electric push rod 8 can adjust the angle of the U-shaped seasoning plate through the cooperation of the connecting rod 6 and the rotating buckle 7, so that the position and opening size of the U-shaped seasoning plate are changed. When the angle of the U-shaped seasoning plate is adjusted by the electric push rod 8, the two arc panels 5 of the U-shaped seasoning plate will move in opposite directions. At this time, the connecting rope 12 will pull the elastic layer 9 to deform, and will also pull the piston plate 18 inside the piston body 14 to move. The air in the piston plate 18 cavity will be compressed, so that the air enters the connecting column 16 through the vent pipe 15, and the raised block 20 is lifted up under the action of the air pressure, so that the elastic layer 9 is raised, so that the agglomerates attached to the elastic layer 9 fall off.

[0065] When the arc panel 5 is closed, the spring 19 will pull the piston plate 18 to perform a reset movement, so that the connecting rope 12 drives the elastic layer 9 to reset, and drives the protruding block 20 to retract, so that the plane of the elastic layer 9 is restored.

[0066] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A U-shaped curved material regulating buffer funnel device, comprising a tail car head funnel (1), wherein the tail car head funnel (1) is plugged into a central buffer funnel (2), characterized in that: The bottom of the central buffer hopper (2) is connected to a material guide trough (3) via a track; The material guide trough (3) comprises a funnel wall (4), the inner wall of the funnel wall (4) is rotatably connected to a U-shaped seasoning plate, the U-shaped seasoning plate is composed of two symmetrical arc panels (5), the two arc panels (5) are rotatably connected by a buckle, and an angle is provided at the connection of the two arc panels (5), the outer walls of the two arc panels (5) are fixedly connected to a connecting rod (6), the tops of both sides of the funnel wall (4) are installed with electric push rods (8), the ends of the telescopic rods of the electric push rods (8) are rotatably connected to a rotating buckle (7), and the rotating buckle (7) is rotatably connected to the connecting rod (6).

2. The U-shaped curved material regulating buffer funnel device according to claim 1 is characterized in that: The arc panel (5) comprises an outer shell (10), the inner arc surface of the outer shell (10) is wrapped with an elastic layer (9), the contact surface between the elastic layer (9) and the outer shell (10) is provided with a mesh grid (11), and the mesh grid (11) has transverse warps and longitudinal wefts, a connecting column (16) for connecting the elastic layer (9) and the outer shell (10) is provided at a grid node of the mesh grid (11) located on one of the warps, and a supporting column (17) fixed on the elastic layer (9) is provided at a grid node of the mesh grid (11) located on another warp, and adjacent connecting columns (16) and supporting columns (17) are connected by connecting buckles (13), and the connecting buckles (13) are located on the longitudinal wefts of the mesh grid (11); A connecting rope (12) is commonly connected between the two curved panels (5), and the two ends of the connecting rope (12) sequentially connect the support columns (17) on the same warp line, and at least half of the cross section of the connecting rope (12) is embedded in the elastic layer (9); It also comprises a resetting component, which is used to reset the connecting rope (12) after it moves.

3. The U-shaped curved material regulating buffer funnel device according to claim 2 is characterized in that: The connecting columns (16) and the supporting columns (17) are provided with a plurality of groups of warps, which are arranged alternately.

4. The U-shaped curved material regulating buffer funnel device according to claim 2, characterized in that: The warp lines where the support columns (17) are located are provided with a plurality of groups, which are arranged in sequence, and two adjacent support columns (17) are also connected via a connecting buckle (13).

5. The U-shaped curved material regulating buffer funnel device according to claim 2, characterized in that: The reset assembly comprises a piston body (14) fixedly connected to the contact surface between the outer shell (10) and the elastic layer (9); the inner wall of the piston body (14) is slidably connected to a piston plate (18); the connecting rope (12) passes through the piston body (14) and is fixedly connected to the piston plate (18); the outer wall of the piston plate (18) away from the connecting rope (12) is fixedly connected to the inner wall of the piston body (14) by a spring (19).

6. The U-shaped curved surface material regulating buffer funnel device according to claim 5, characterized in that: The inner wall of the piston cavity of the piston body (14) is connected with a vent pipe (15), and the vent pipe (15) is communicated with the interior of all the connecting columns (16), and a protruding block (20) is slidably installed inside the connecting column (16).

7. The U-shaped curved surface material regulating buffer funnel device according to claim 2, characterized in that: The connection rope (12) at the angle between the two arc panels (5) has a reserved length.

8. The U-shaped curved surface material regulating buffer funnel device according to any one of claims 1 to 7, characterized in that: The U-shaped seasoning plate is a U-shaped curved surface structure, and the bottom edge of the U-shaped seasoning plate forms an upward angle of 5-10 degrees with the horizontal direction.

9. The U-shaped curved surface material regulating buffer funnel device according to any one of claims 1 to 7, characterized in that: The front side of the tail car head hopper (1) is connected with an inspection door (21) via a hinge.

10. The U-shaped curved surface material regulating buffer funnel device according to any one of claims 1 to 7, characterized in that: The inner wall of the material guide trough (3) is fixedly connected with a lining plate (22), and the surface of the lining plate (22) is fixedly connected with a material guide trough skin (23).

Images