Green brick tea raw material screening device

Abstract

The utility model relates to the technical field of green brick tea raw material screening, and discloses a green brick tea raw material screening device. Comprising a screening box, a first screening net is slidably connected to the interior of the screening box, and a second screening net is slidably connected to the portion, located below the first screening net, of the interior of the screening box. The rotating plate can drive the throttling plate to rotate, so that the throttling plate adjusts a blocking opening of the throttling groove, green brick tea raw materials on the surface of the stacking plate can be discharged into the screening box through the throttling groove, and the throttling purpose can be achieved when the green brick tea raw materials are put into the screening box; and the inclined plate can control the discharge flow rate of the green brick tea raw materials, the discharge speed of the green brick tea raw materials is slow, and blockage caused by excessive feeding amount of the green brick tea raw materials is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of green brick tea raw material screening, in particular to a green brick tea raw material screening device. Background Art

[0002] The production of green brick tea is divided into two types: surface tea and inner tea. Surface tea is more delicate, while inner tea is more extensive. Surface tea is made from fresh leaves after withering, initial kneading, initial sun drying, re-frying, re-kneading, piling, and sun drying. After the green brick tea is screened and roasted, the tea stems are mixed, uneven in size, and not beautiful in shape. They need to be sieved with bamboo to achieve a uniform size and neat appearance. For example, the patent subject "A green brick tea raw material screening device" with application number "202021874897.8" sets multiple sieve plates at different heights to achieve continuous screening of old green tea. When the green brick tea is in the screening process, the amount of green brick tea put in cannot be throttled and the speed controlled, resulting in excessive amount of green brick tea raw materials being put in and blockage, affecting the screening effect of green brick tea. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a green brick tea raw material screening device, which facilitates the purpose of throttling and controlling the speed of the discharge of the green brick tea raw materials, thereby preventing blockage caused by excessive addition of green brick tea raw materials, and solving the above-mentioned technical problems.

[0004] To achieve the above object, the utility model provides the following technical solution: comprising a screening box, wherein a first screening net is slidably connected inside the screening box, a second screening net is slidably connected inside the screening box below the first screening net, and a third screening net is slidably connected inside the screening box below the second screening net;

[0005] A feed pipe is fixedly connected to the upper surface of the screening box, a cross bar is fixedly connected to the interior of the feed pipe, a motor is fixedly connected to the lower surface of the cross bar, a fixing rod is fixedly connected to the output end of the motor, a rotating plate is fixedly connected to the end of the fixing rod away from the motor, a throttling plate is fixedly connected to the upper surface of the rotating plate, a stacking plate is fixedly connected to the interior of the feed pipe, and the stacking plate is movably connected to the fixing rod, a throttling groove is provided inside the stacking plate, and the throttling groove is fitted with the throttling plate.

[0006] Through the above technical scheme, when the green brick tea raw materials are put in, the green brick tea raw materials can be piled on the surface of the pushing plate. When the fixed rod drives the rotating plate to rotate, the stacking plate is not easy to rotate together with the fixed rod. The rotating plate can drive the throttling plate to rotate, so that the throttling plate can adjust the sealing opening of the throttling groove, so that it can play the purpose of throttling when the green brick tea raw materials are put in, thereby improving the screening effect of the green brick tea raw materials and preventing the green brick tea raw materials from being easily blocked during screening.

[0007] As a preferred technical solution of the utility model, an inclined plate is fixedly connected to the inside of the feed pipe, and the inclined plate is located below the rotating plate.

[0008] Through the above technical solution, since two groups of oppositely inclined inclined plates are arranged inside the feed pipe, the inclined plates can control the discharge flow rate of the green brick tea raw materials, so that the discharge speed of the green brick tea raw materials is relatively slow.

[0009] As a preferred technical solution of the utility model, the upper surface of the third screening net and the upper surface of the second screening net are fixedly connected with a connecting rod, the upper surface of the first screening net is fixedly connected with a first spring, and the first spring is fixedly connected to the inner top wall of the screening box.

[0010] Through the above technical solution, when the first screening net, the second screening net and the third screening net move up and down, the first screening net can squeeze the first spring, so that the first screening net, the second screening net and the third screening net bounce up and down inside the screening box to screen the green brick tea raw materials.

[0011] As a preferred technical solution of the utility model, the first screening net, the second screening net and the third screening net are all fixedly connected to the inside of a mounting plate, the side surface of the mounting plate is fixedly connected to a metal plate, the rear surface of the metal plate is movably connected to a spring plate through a bearing, the lower surface of the spring plate is fixedly connected to a second spring, and the second spring is fixedly connected to the side surface of the mounting plate.

[0012] Through the above technical solution, the second spring is affected by the elasticity of multiple screens and can drive the spring plate to elastically bounce inside the first screening net, the second screening net and the third screening net to flip the green brick tea raw materials, thereby improving the elasticity of the green brick tea raw materials during screening.

[0013] As a preferred technical solution of the utility model, the upper surface of the mounting plate is fixedly connected to a fixed block, the upper surface of the fixed block is fixedly connected to a mosaic plate, the upper surface of the mosaic plate is fixedly connected to a third spring, and the end of the third spring away from the mosaic plate is fixedly connected to a push plate.

[0014] Through the above technical scheme, the elasticity of the third spring is utilized to drive the pushing plate to extend from the inside of the interlocking plate. The extension of the pushing plate can increase the elasticity inside the first screening net, the second screening net and the third screening net. When the green brick tea raw materials are screened, the green brick tea raw materials are bounced up and down by the first screening net, the second screening net and the third screening net, and the internal elasticity can improve the screening effect of the green brick tea raw materials.

[0015] As a preferred technical solution of the utility model, a metal rod is fixedly connected to the lower surface of the third screening net, and an end of the metal rod away from the third screening net is fixedly connected to a wind collecting hood.

[0016] Through the above technical solution, the wind blown out by the fan can be collected inside the wind collecting hood, so that the wind collecting hood can generate resistance to the wind blown out by the fan, thereby making it convenient for the wind collecting hood to push the third screening net to slide.

[0017] As an optimal technical solution of the utility model, both sides of the screening box are fixedly connected to a machine box, the interior of the machine box is fixedly connected to a fan, the side surface of the machine box is fixedly connected to an air duct, and the air duct is located below the air collecting hood, and the side surface of the machine box is fixedly connected to a dust net.

[0018] Through the above technical solution, the fan is started so that it can discharge wind into the wind collecting hood through the air duct, so that the wind collecting hood can be affected by the wind force of the fan to push the third screening net to slide inside the screening box, and the dustproof net can block dust in the outside air.

[0019] As a preferred technical solution of the utility model, a collecting box is slidably connected to the inside of the screening box, and the collecting box is located below the third screening net, the inner wall of the collecting box is fixedly connected to a fitting plate, the upper surface of the fitting plate is threadedly connected to a handle via bolts, the side surface of the handle is fixedly connected to a bag net, and the front surface of the screening box is movably connected to a box door via a hinge.

[0020] Through the above technical solution, green brick tea raw materials with smaller diameters can pass through the inside of the third screening net and fall into the collection box. By turning the bolts to separate the handle from the bonding plate, the staff can hold the handle to pull the bag net out of the collection box to sort the collected green brick tea raw materials.

[0021] Compared with the prior art, the utility model provides a green brick tea raw material screening device, which has the following beneficial effects:

[0022] 1. In the utility model, when the green brick tea raw materials are put in, the green brick tea raw materials can be piled on the surface of the pushing plate, and the motor is started to drive the fixed rod and the rotating plate to rotate, so that when the fixed rod drives the rotating plate to rotate, the stacking plate is not easy to rotate together with the fixed rod, and when the rotating plate is rotating, the rotating plate can drive the throttling plate to rotate, so that the throttling plate adjusts the sealing opening of the throttling groove, and the green brick tea raw materials on the surface of the stacking plate can be discharged into the interior of the screening box through the throttling groove, so that it can play the purpose of throttling when the green brick tea raw materials are put in, and the inclined surface of the inclined plate is used to control the discharge flow rate of the green brick tea raw materials when the green brick tea raw materials are discharged, so that when the green brick tea raw materials are discharged into the interior of the screening box, the discharge speed of the green brick tea raw materials is relatively slow, thereby preventing blockage caused by excessive amount of green brick tea raw materials.

[0023] 2. In the utility model, when the first screening net, the second screening net and the third screening net are bouncing, the second spring is affected by the bouncing of multiple screens to drive the spring plate to bounce inside the first screening net, the second screening net and the third screening net to turn over the green brick tea raw materials. The elasticity of the third spring is utilized to drive the push plate to extend from the inside of the interlocking plate. The extension of the push plate can increase the elasticity inside the first screening net, the second screening net and the third screening net. When the green brick tea raw materials are screened, the green brick tea raw materials are affected by the up and down bouncing of the first screening net, the second screening net and the third screening net and the internal elasticity to improve the screening effect of the green brick tea raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the split structure of the fixed rod of the utility model;

[0027] Figure 4 for Figure 2 Schematic diagram of the structure at A in the middle;

[0028] Figure 5 It is a schematic diagram of the split structure of the mosaic plate of the utility model;

[0029] Figure 6 This is a schematic diagram of the bag net structure of the utility model.

[0030] Among them: 1. screening box; 2. connecting rod; 3. first screening net; 4. fixing rod; 5. motor; 6. cross bar; 7. feed pipe; 8. inclined plate; 9. first spring; 10. second screening net; 11. third screening net; 12. air duct; 13. fan; 14. machine box; 15. collection box; 16. fitting plate; 17. air collecting hood; 18. metal rod; 19. bag net; 20. interlocking plate; 21. metal plate; 22. spring plate; 23. second spring; 24. fixing block; 25. mounting plate; 26. bolt; 27. handle; 28. third spring; 29. ​​push plate; 30. rotating plate; 31. throttle plate; 32. stacking plate; 33. throttle groove; 34. dustproof net; 35. box door. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0032] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figure 1-3 A green brick tea raw material screening device comprises a screening box 1, a first screening net 3 is slidably connected inside the screening box 1, a second screening net 10 is slidably connected inside the screening box 1 below the first screening net 3, and a third screening net 11 is slidably connected inside the screening box 1 below the second screening net 10;

[0035] A feed pipe 7 is fixedly connected to the upper surface of the screening box 1, a cross bar 6 is fixedly connected to the inside of the feed pipe 7, a motor 5 is fixedly connected to the lower surface of the cross bar 6, a fixed rod 4 is fixedly connected to the output end of the motor 5, a rotating plate 30 is fixedly connected to the end of the fixed rod 4 away from the motor 5, a throttling plate 31 is fixedly connected to the upper surface of the rotating plate 30, a stacking plate 32 is fixedly connected to the inside of the feed pipe 7, and the stacking plate 32 is movably connected to the fixed rod 4, a throttling groove 33 is provided inside the stacking plate 32, and the throttling groove 33 is fitted with the throttling plate 31.

[0036] The green brick tea raw materials that need to be screened can be put into the screening box 1 through the feeding pipe 7. Since the mesh diameters of the first screening net 3, the second screening net 10 and the third screening net 11 are different, the green brick tea raw materials of different diameters can be screened. When the green brick tea raw materials are put in, the green brick tea raw materials can be piled on the surface of the pushing plate. The motor 5 is connected to the external power supply, and the motor 5 is started so that it can drive the fixed rod 4 and the rotating plate 30 to rotate. Since the diameter of the fixed rod 4 is smaller than the opening at the center position of the stacking plate 32, when the fixed rod 4 drives the rotating plate 30 to rotate, the stacking plate 32 is not easy to rotate with the fixed rod 4. When the rotating plate 30 is rotating, the rotating plate 30 can drive the throttling plate 31 to rotate, so that the throttling plate 31 adjusts the blocking opening of the throttling groove 33. The green brick tea raw materials on the surface of the stacking plate 32 can be discharged into the interior of the screening box 1 through the throttling groove 33, so that it can achieve the purpose of throttling when the green brick tea raw materials are put in, thereby improving the screening effect of the green brick tea raw materials.

[0037] See also Figure 2 The inside of the feed pipe 7 is fixedly connected with an inclined plate 8, and the inclined plate 8 is located below the rotating plate 30.

[0038] Since two groups of oppositely inclined inclined plates 8 are arranged inside the feed pipe 7, the inclined plates 8 can control the discharge flow rate of the green brick tea raw materials when the green brick tea raw materials are discharged by utilizing the inclined surface setting of the inclined plates 8, so that when the green brick tea raw materials are discharged into the screening box 1, the discharge speed of the green brick tea raw materials is relatively slow.

[0039] See also Figure 2 The upper surface of the third screening net 11 and the upper surface of the second screening net 10 are both fixedly connected with a connecting rod 2, the upper surface of the first screening net 3 is fixedly connected with a first spring 9, and the first spring 9 is fixedly connected to the inner top wall of the screening box 1.

[0040] The first screening net 3, the second screening net 10 and the third screening net 11 can be connected by a connecting rod. When the first screening net 3, the second screening net 10 and the third screening net 11 move up and down, the first screening net 3 can squeeze the first spring 9. The elasticity of the first spring 9 can drive the first screening net 3, the second screening net 10 and the third screening net 11 to bounce up and down inside the screening box 1 to screen the green brick tea raw materials.

[0041] See also Figure 2 and Figure 4 The first screening net 3, the second screening net 10 and the third screening net 11 are all fixedly connected with a mounting plate 25, the side surface of the mounting plate 25 is fixedly connected with a metal plate 21, the rear surface of the metal plate 21 is movably connected with a spring plate 22 through a bearing, the lower surface of the spring plate 22 is fixedly connected with a second spring 23, and the second spring 23 is fixedly connected to the side surface of the mounting plate 25.

[0042] When the first screening net 3, the second screening net 10 and the third screening net 11 are bouncing, the second spring 23 is affected by the bouncing of multiple screens and can drive the spring plate 22 to bounce inside the first screening net 3, the second screening net 10 and the third screening net 11 to flip the green brick tea raw materials, so that the green brick tea raw materials can be rolled and screened during screening.

[0043] See also Figure 4-5 The upper surface of the mounting plate 25 is fixedly connected with a fixing block 24, the upper surface of the fixing block 24 is fixedly connected with a mosaic plate 20, the upper surface of the mosaic plate 20 is fixedly connected with a third spring 28, and one end of the third spring 28 away from the mosaic plate 20 is fixedly connected with a push plate 29.

[0044] When the first screening net 3, the second screening net 10 and the third screening net 11 are bouncing, the elasticity of the third spring 28 is utilized to drive the pushing plate 29 to extend from the inside of the interlocking plate 20, and the extension of the pushing plate 29 can increase the elasticity inside the first screening net 3, the second screening net 10 and the third screening net 11. In conjunction with the spring plate 22, when the green brick tea raw materials are screened, the green brick tea raw materials are affected by the up and down bouncing of the first screening net 3, the second screening net 10 and the third screening net 11 and the internal elasticity, which can improve the screening effect of the green brick tea raw materials.

[0045] See also Figure 2 A metal rod 18 is fixedly connected to the lower surface of the third screening net 11 , and an end of the metal rod 18 away from the third screening net 11 is fixedly connected to a wind collecting cover 17 .

[0046] The lower surface of the wind collecting hood 17 is open. When the wind from the fan 13 is discharged into the interior of the wind collecting hood 17 through the air duct 12, the wind blown by the fan 13 can be collected in the interior of the wind collecting hood 17, so that the wind collecting hood 17 can generate resistance to the wind blown by the fan 13, thereby making it convenient for the wind collecting hood 17 to push the third screening net 11 to slide inside the screening box 1.

[0047] See also Figure 1-2 Both sides of the screening box 1 are fixedly connected with an organic box 14, the interior of the organic box 14 is fixedly connected with a fan 13, the side surface of the organic box 14 is fixedly connected with an air duct 12, and the air duct 12 is located below the air collecting hood 17, and the side surface of the organic box 14 is fixedly connected with a dustproof net 34.

[0048] The fan 13 is connected to an external power source, and is started so that the fan 13 can discharge wind into the wind collecting hood 17 through the air duct 12, so that the wind collecting hood 17 can be affected by the wind force of the fan 13 to push the third screening net 11 to slide inside the screening box 1, and the dust-proof net 34 can be used to block dust in the outside air when the fan 13 draws outside air.

[0049] See also Figure 2and Figure 6 A collecting box 15 is slidably connected to the interior of the screening box 1, and the collecting box 15 is located below the third screening net 11. A fitting plate 16 is fixedly connected to the inner wall of the collecting box 15. A handle 27 is threadedly connected to the upper surface of the fitting plate 16 through a bolt 26. A bag net 19 is fixedly connected to the side surface of the handle 27. A box door 35 is movably connected to the front surface of the screening box 1 through a hinge.

[0050] When the green brick tea raw materials are screened, the box door 35 can be opened by utilizing the movement of the box door 35, and the green brick tea raw materials with smaller diameters can pass through the inside of the third screening net 11 and fall into the collecting box 15, and are collected by the bag net 19. When the green brick tea raw materials are collected, the collecting box 15 is dragged forward so that the collecting box 15 can extend from the inside of the screening box 1, and the bolt 26 is turned to separate the handle 27 from the bonding plate 16. The staff can hold the handle 27 to pull the bag net 19 out of the inside of the collecting box 15 to sort the collected green brick tea raw materials.

[0051] When in use, the green brick tea raw materials to be screened can be put into the screening box 1 through the feed pipe 7, and the green brick tea raw materials can be piled on the surface of the pushing plate. The motor 5 is started to drive the fixed rod 4 and the rotating plate 30 to rotate. Since the diameter of the fixed rod 4 is smaller than the opening at the center of the stacking plate 32, when the fixed rod 4 drives the rotating plate 30 to rotate, the stacking plate 32 is not easy to rotate together with the fixed rod 4. When the rotating plate 30 is rotating, the rotating plate 30 can drive the throttle plate 31 to rotate, so that the throttle plate 31 adjusts the blocking opening of the throttling groove 33, and the green brick tea raw materials on the surface of the stacking plate 32 can pass through the throttling groove 33 is discharged into the interior of the screening box 1 and falls into the interior of the first screening net 3. The inclined surface of the inclined plate 8 is set so that when the green brick tea raw materials are discharged, the inclined plate 8 can control the discharge flow rate of the green brick tea raw materials, and the fan 13 is started so that the wind can be discharged into the interior of the wind collecting cover 17 through the air duct 12, so that the wind collecting cover 17 can be affected by the wind force of the fan 13 to push the third screening net 11 to slide inside the screening box 1, and the elasticity of the first spring 9 can drive the first screening net 3, the second screening net 10 and the third screening net 11 to bounce up and down together inside the screening box 1. When the first screening net 3, the second screening net 1 When the first, second and third screening nets 10 and 11 are bouncing, the second spring 23 is affected by the bouncing of the multiple screens and can drive the spring plate 22 to bounce inside the first, second and third screening nets 10 and 11 to flip the green brick tea raw materials. The elasticity of the third spring 28 is used to drive the push plate 29 to extend from the inside of the interlocking plate 20. The extension of the push plate 29 can increase the elasticity inside the first, second and third screening nets 10 and 11. When the green brick tea raw materials are screened, the green brick tea raw materials are affected by the first, second and third screening nets 10 and 11. The up and down bouncing and the internal elasticity can screen the green brick tea raw materials. The green brick tea raw materials with smaller diameters can pass through the interior of the third screening net 11 and fall into the collection box 15, and are collected by the bag net 19. When the green brick tea raw materials are collected, the bolt 26 is screwed to separate the handle 27 from the bonding plate 16, and the staff can hold the handle 27 to pull the bag net 19 out of the interior of the collection box 15 to sort the collected green brick tea raw materials.

[0052] 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 green brick tea raw material screening device, comprising a screening box (1), characterized in that: The interior of the screening box (1) is slidably connected to a first screening net (3); the interior of the screening box (1) is slidably connected to a second screening net (10) located below the first screening net (3); the interior of the screening box (1) is slidably connected to a third screening net (11) located below the second screening net (10); The upper surface of the screening box (1) is fixedly connected to a feed pipe (7), the interior of the feed pipe (7) is fixedly connected to a cross bar (6), the lower surface of the cross bar (6) is fixedly connected to a motor (5), the output end of the motor (5) is fixedly connected to a fixed rod (4), the end of the fixed rod (4) away from the motor (5) is fixedly connected to a rotating plate (30), the upper surface of the rotating plate (30) is fixedly connected to a throttle plate (31), the interior of the feed pipe (7) is fixedly connected to an accumulation plate (32), and the accumulation plate (32) is movably connected to the fixed rod (4), a throttling groove (33) is provided inside the accumulation plate (32), and the throttling groove (33) is in contact with the throttling plate (31).

2. The green brick tea raw material screening device according to claim 1, characterized in that: The interior of the feed pipe (7) is fixedly connected with an inclined plate (8), and the inclined plate (8) is located below the rotating plate (30).

3. The green brick tea raw material screening device according to claim 1, characterized in that: The upper surface of the third screening net (11) and the upper surface of the second screening net (10) are both fixedly connected to a connecting rod (2), the upper surface of the first screening net (3) is fixedly connected to a first spring (9), and the first spring (9) is fixedly connected to the inner top wall of the screening box (1).

4. The green brick tea raw material screening device according to claim 1, characterized in that: The first screening net (3), the second screening net (10) and the third screening net (11) are all fixedly connected to a mounting plate (25) inside, the side surface of the mounting plate (25) is fixedly connected to a metal plate (21), the rear surface of the metal plate (21) is movably connected to a spring plate (22) via a bearing, the lower surface of the spring plate (22) is fixedly connected to a second spring (23), and the second spring (23) is fixedly connected to the side surface of the mounting plate (25).

5. The green brick tea raw material screening device according to claim 4, characterized in that: The upper surface of the mounting plate (25) is fixedly connected to a fixing block (24), the upper surface of the fixing block (24) is fixedly connected to a mosaic plate (20), the upper surface of the mosaic plate (20) is fixedly connected to a third spring (28), and one end of the third spring (28) away from the mosaic plate (20) is fixedly connected to a push plate (29).

6. The green brick tea raw material screening device according to claim 1, characterized in that: A metal rod (18) is fixedly connected to the lower surface of the third screening net (11), and an end of the metal rod (18) away from the third screening net (11) is fixedly connected to a wind collecting cover (17).

7. The green brick tea raw material screening device according to claim 1, characterized in that: Both sides of the screening box (1) are fixedly connected to an engine box (14), the interior of the engine box (14) is fixedly connected to a fan (13), a side surface of the engine box (14) is fixedly connected to an air duct (12), and the air duct (12) is located below an air collecting hood (17), and a side surface of the engine box (14) is fixedly connected to a dustproof net (34).

8. The green brick tea raw material screening device according to claim 1, characterized in that: The interior of the screening box (1) is slidably connected to a collecting box (15), and the collecting box (15) is located below the third screening net (11). The inner wall of the collecting box (15) is fixedly connected to a bonding plate (16), and the upper surface of the bonding plate (16) is threadedly connected to a handle (27) via a bolt (26), and the side surface of the handle (27) is fixedly connected to a bag net (19), and the front surface of the screening box (1) is movably connected to a box door (35) via a hinge.

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