Blending equipment for tobacco shred preparation

Abstract

The utility model discloses blending equipment for tobacco shred preparation. The blending equipment comprises a base; the blending cylinder is fixed on the base; the fixing assembly comprises a fixing frame and a connecting frame, the first end of the fixing frame is connected with the base, the second end of the fixing frame is connected with the first end of the connecting frame, and the second end of the connecting frame is rotationally connected with the blending cylinder; the cut tobacco pushing assembly is arranged at the center position of the blending cylinder; the cut tobacco stirring assembly is arranged in the circumferential direction of the cut tobacco pushing assembly and comprises a first driving part, a second driving part and a material mixing plate, the first driving part is arranged on the inner wall of the blending barrel, an output shaft of the first driving part is connected with the second driving part, and an output shaft of the second driving part is connected with the material mixing plate. According to the utility model, sheet shreds, stem shreds and leaf shreds can be uniformly mixed, and the overall processing quality of the tobacco shreds is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco shred preparation, and more specifically, to a blending device for preparing shredded tobacco. Background Art

[0002] In the process of cigarette production, the process of tobacco leaf making is the longest, the most complicated and the most types of equipment. The process of tobacco leaf making is divided into three relatively independent processes and combinations: leaf leaf making, stem leaf making and leaf leaf making. It includes: tobacco leaf moisture recovery, proportioning, leaf moistening, leaf storage, shredding, drying, stem moistening, stem pressing, stem expansion, stem cutting, stem drying, tobacco leaf moistening and shredding, and then evenly mixing the leaf leaf, stem leaf and leaf leaf, and spraying flavors and spices after cooling.

[0003] With the competition in the tobacco industry, tobacco technology reform is imperative. At present, when the equipment is mixing and blending thin slices, stem shreds and leaf shreds evenly, the blending uniformity of thin slices, stem shreds and leaf shreds is insufficient, which affects the quality of subsequent tobacco processing.

[0004] Therefore, how to provide a blending device for preparing shredded tobacco has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] One object of the utility model is to provide a new technical solution for blending equipment for preparing shredded tobacco.

[0006] According to a first aspect of the utility model, there is provided a blending device for preparing shredded tobacco, comprising: a base;

[0007] A mixing cylinder, wherein the mixing cylinder is fixed on the base;

[0008] A fixing assembly, the fixing assembly comprising a fixing frame and a connecting frame, the first end of the fixing frame is connected to the base, the second end of the fixing frame is connected to the first end of the connecting frame, and the second end of the connecting frame is rotatably connected to the mixing barrel;

[0009] A tobacco shred pushing assembly, the tobacco shred pushing assembly is arranged at the center of the blending cylinder, and the tobacco shred pushing assembly is used to push the tobacco shreds at the center of the blending cylinder to the edge of the blending cylinder;

[0010] A tobacco stirring assembly, wherein the tobacco stirring assembly is arranged along the circumference of the tobacco pushing assembly, and the tobacco stirring assembly includes a first driving member, a second driving member and a mixing plate, wherein the first driving member is arranged on the inner wall of the blending barrel, and the output shaft of the first driving member is connected to the second driving member to drive the second driving member to rotate, and the output shaft of the second driving member is connected to the mixing plate.

[0011] Optionally, the tobacco stirring assembly further includes a third driving member and a connecting rod, the output shaft of the second driving member is connected to the third driving member, the output shaft of the third driving member is connected to the connecting rod, and the mixing plates are respectively arranged on both ends of the connecting rod.

[0012] Optionally, a feeding cylinder is provided on the blending cylinder, and the feeding cylinder is communicated with the blending cylinder.

[0013] Optionally, the tobacco pushing assembly includes a fourth driving member and a pushing plate, the fourth driving member is arranged at the center of the blending barrel, and the output shaft of the fourth driving member is connected to the pushing plate to drive the pushing plate to push the tobacco to the edge of the blending barrel.

[0014] Optionally, the tobacco pushing assembly further includes a fifth driving member, which is disposed at the center of the blending barrel, and an output shaft of the fifth driving member is connected to the fourth driving member for driving the fourth driving member to rotate.

[0015] Optionally, the push plate is an arc-shaped structure, and there are a plurality of the fourth driving member and the push plate, which are respectively arranged along the circumference of the fifth driving member.

[0016] Optionally, an annular rack is provided on the outside of the blending cylinder;

[0017] The blending equipment for preparing tobacco also includes a blending barrel rotating assembly, which includes a sixth driving member and a first transmission gear. The sixth driving member is arranged at the second end of the connecting frame, and the output shaft of the sixth driving member is connected to the first transmission gear. The first transmission gear is engaged with the annular rack frame to drive the blending barrel to rotate.

[0018] Optionally, the mixing barrel rotating assembly further comprises a fixed shaft frame and a second transmission gear, wherein a first end of the fixed shaft frame is connected to the base, a second end of the fixed shaft frame is rotationally connected to the second transmission gear, and the second transmission gear is meshed with the annular rack frame.

[0019] Optionally, a feed port, a seventh driving member and a blocking plate are also provided in the mixing barrel, the feed port passes through the mixing barrel, the seventh driving member and the blocking plate are both provided in the mixing barrel, and the blocking plate is provided corresponding to the feed port, and the output shaft of the seventh driving member is connected to the blocking plate, so as to drive the blocking plate to move so as to seal and open the feed port.

[0020] Optionally, the feed opening and the blocking plate are arranged in a semicircular shape, and the size of the blocking plate is larger than the size of the feed opening.

[0021] The beneficial effects of the utility model are:

[0022] The utility model is provided by connecting the first end of the fixing frame to the base, the second end of the fixing frame to the first end of the connecting frame, and the second end of the connecting frame to the blending cylinder in rotation; the tobacco pushing assembly is arranged at the center of the blending cylinder, and the tobacco pushing assembly pushes the tobacco at the center of the blending cylinder to the edge of the blending cylinder; and the first driving member is arranged on the inner wall of the blending cylinder, the output shaft of the first driving member is connected to the second driving member, and the output shaft of the second driving member is connected to the mixing plate. When working, the tobacco at the center of the blending cylinder is pushed toward the edge of the blending cylinder by the tobacco pushing assembly, and the first driving member and the second driving member are started at the same time, the second driving member works to drive the mixing plate to move, and the first driving member drives the second driving member to rotate, so that the mixing plate evenly blends the thin slices, stems and leaves, so that the thin slices, stems and leaves can be evenly mixed, thereby improving the overall processing quality of the tobacco.

[0023] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0025] Figure 1 This is a structural diagram of a blending device for preparing shredded tobacco according to the utility model;

[0026] Figure 2 This is a structural diagram of the tobacco blending equipment for preparing shredded tobacco of the utility model from another angle;

[0027] Figure 3 This is a structural diagram of the tobacco pushing component of the utility model;

[0028] Figure 4 This is a structural diagram of the tobacco stirring assembly of the utility model.

[0029] The markings in the figure are as follows: 1. Base; 2. Blending cylinder; 21. Feed cylinder; 22. Annular rack; 23. Feeding port; 24. Seventh driving member; 25. Blocking plate; 3. Fixed assembly; 31. Fixed frame; 32. Connecting frame; 4. Tobacco pushing assembly; 41. Fourth driving member; 42. Pushing plate; 43. Fifth driving member; 5. Tobacco stirring assembly; 51. First driving member; 52. Second driving member; 53. Mixing plate; 54. Third driving member; 55. Connecting rod; 6. Blending cylinder rotating assembly; 61. Sixth driving member; 62. First transmission gear; 63. Fixed shaft frame; 64. Second transmission gear. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] like Figures 1 to 4 As shown, an embodiment of the utility model provides a blending device for preparing shredded tobacco, comprising: a base 1, a blending cylinder 2, a fixing component 3, a shredded tobacco pushing component 4 and a shredded tobacco stirring component 5.

[0035] The mixing barrel 2 is fixed on the base 1. The fixing assembly 3 includes a fixing frame 31 and a connecting frame 32, the first end of the fixing frame 31 is connected to the base 1, the second end of the fixing frame 31 is connected to the first end of the connecting frame 32, and the second end of the connecting frame 32 is rotatably connected to the mixing barrel 2. It should be noted that the mixing barrel 2 is fixed to the second end of the connecting frame 32, and the rotation mode of the mixing barrel 2 is not limited here.

[0036] The tobacco shred pushing assembly 4 is arranged at the center of the blending cylinder 2 , and is used to push the tobacco shreds at the center of the blending cylinder 2 toward the edge of the blending cylinder 2 .

[0037] The tobacco stirring assembly 5 is arranged along the circumference of the tobacco pushing assembly 4, and the tobacco stirring assembly 5 includes a first driving member 51, a second driving member 52 and a mixing plate 53. The first driving member 51 is arranged on the inner wall of the blending cylinder 2, and the output shaft of the first driving member 51 is connected to the second driving member 52 to drive the second driving member 52 to rotate. The output shaft of the second driving member 52 is connected to the mixing plate 53.

[0038] It should be noted that the second driving member 52 can drive the mixing plate 53 to rotate in the mixing barrel 2, or can drive the mixing plate 53 to move linearly in the mixing barrel 2, and the specific implementation manner is not limited here.

[0039] When working, the tobacco pushing assembly 4 pushes the tobacco at the center position of the blending cylinder 2 toward the edge of the blending cylinder 2, and at the same time starts the first driving member 51 and the second driving member 52. The second driving member 52 drives the mixing plate 53 to move, and the first driving member 51 drives the second driving member 52 to rotate, so that the mixing plate 53 evenly blends the thin slices, stem shreds and leaf shreds, so that the thin slices, stem shreds and leaf shreds can be evenly mixed.

[0040] The utility model connects the first end of the fixing frame 31 to the base 1, the second end of the fixing frame 31 to the first end of the connecting frame 32, and the second end of the connecting frame 32 is rotatably connected to the blending barrel 2; the tobacco pushing assembly 4 is arranged at the center of the blending barrel 2, and the tobacco pushing assembly 4 pushes the tobacco at the center of the blending barrel 2 to the edge of the blending barrel 2; and the first driving member 51 is arranged on the inner wall of the blending barrel 2, the output shaft of the first driving member 51 is connected to the second driving member 52, and the output shaft of the second driving member 52 is connected to the mixing plate 53. When working, the tobacco at the center of the blending barrel 2 is pushed toward the edge of the blending barrel 2 by the tobacco pushing assembly 4, and the first driving member 51 and the second driving member 52 are started at the same time, and the second driving member 52 drives the mixing plate 53 to move when the second driving member 52 works, and the first driving member 51 drives the second driving member 52 to rotate, so that the mixing plate 53 evenly mixes the thin slices, stems and leaves, so that the thin slices, stems and leaves can be evenly mixed, thereby improving the overall processing quality of the tobacco.

[0041] In one embodiment of the tobacco shred preparation blending device of the utility model, as Figure 1 to Figure 2 As shown, the tobacco stirring assembly 5 also includes a third driving member 54 and a connecting rod 55. The output shaft of the second driving member 52 is connected to the third driving member 54, the output shaft of the third driving member 54 is connected to the connecting rod 55, and the mixing plates 53 are respectively arranged on both ends of the connecting rod 55.

[0042] In this embodiment, the first driving member 51 is an electric roller shaft, and the first driving member 51 drives the second driving member 52 to rotate along the circumferential direction of the first driving member 51. The second driving member 52 is an electric telescopic rod, and the second driving member 52 drives the third driving member 54 to reciprocate along the length direction of the second driving member 52. The third driving member 54 is a bidirectional electric telescopic rod, which drives the mixing plate 53 to reciprocate along the length direction of the connecting rod 55, thereby pushing the thin slices, stems and leaves, so that the thin slices, stems and leaves in the blending cylinder 2 can be evenly mixed.

[0043] The utility model connects the output shaft of the second driving member 52 with the third driving member 54, the output shaft of the third driving member 54 is connected to the connecting rod 55, and the mixing plates 53 are respectively arranged on the two ends of the connecting rod 55, so that the first driving member 51 drives the second driving member 52 to rotate along the circumferential direction of the first driving member 51, the second driving member 52 drives the third driving member 54 to reciprocate along the length direction of the second driving member 52, and the third driving member 54 drives the mixing plate 53 to reciprocate along the length direction of the connecting rod 55, thereby pushing the thin slice shreds, stem shreds, and leaf shreds, so that the thin slice shreds, stem shreds, and leaf shreds in the blending cylinder 2 can be evenly mixed, with high blending and mixing accuracy, and improving the quality of cigarettes.

[0044] In one embodiment of the blending equipment for preparing shredded tobacco of the utility model, a feeding cylinder 21 is provided on the blending cylinder 2, and the feeding cylinder 21 is connected to the blending cylinder 2, so that the thin slice shreds, stem shreds, and leaf shreds can enter the blending cylinder 2 through the feeding cylinder 21.

[0045] In one embodiment of the tobacco shred preparation blending device of the utility model, as Figures 1 to 3 As shown, the tobacco pushing assembly 4 includes a fourth driving member 41 and a pushing plate 42. The fourth driving member 41 is arranged at the center of the blending cylinder 2. The output shaft of the fourth driving member 41 is connected to the pushing plate 42 to drive the pushing plate 42 to push the tobacco to the edge of the blending cylinder 2.

[0046] In this embodiment, the fourth driving member 41 is an electric telescopic rod. It should be noted that the fourth driving member 41 is not limited to an electric telescopic rod, and can also be driven by a linear motor, an electric cylinder or a cylinder, etc., as long as the reciprocating movement adjustment of the push plate 42 can be achieved, and no specific limitation is made here.

[0047] The utility model arranges the fourth driving member 41 at the center position of the blending cylinder 2, and the output shaft of the fourth driving member 41 is connected to the pushing plate 42, so that the pushing plate 42 is repeatedly moved toward the edge of the blending cylinder 2, and then the tobacco shreds are pushed toward the edge of the blending cylinder 2 and moved to the vicinity of the mixing plate 53, so that they are mixed by the mixing plate 53, thereby further ensuring the uniformity of the mixing of the thin slice shreds, stem shreds, and leaf shreds.

[0048] Furthermore, the tobacco pushing assembly 4 further includes a fifth driving member 43 , which is disposed at the center of the blending barrel 2 , and an output shaft of the fifth driving member 43 is connected to the fourth driving member 41 for driving the fourth driving member 41 to rotate.

[0049] In this embodiment, the fifth driving member 43 is an electric roller shaft. It should be noted that the fifth driving member 43 is not limited to an electric roller shaft, and can also be driven by a linear motor, an electric cylinder or a cylinder, etc., as long as the rotation adjustment of the fifth driving member 43 can be achieved, and no specific limitation is made here.

[0050] The utility model arranges the fifth driving member 43 at the center position of the blending barrel 2, and the output shaft of the fifth driving member 43 is connected to the fourth driving member 41. The fifth driving member 43 rotates to drive the fourth driving member 41 and the pushing plate 42 to rotate along the circumferential direction of the fifth driving member 43, so that the pushing plate 42 can push all the materials around the fifth driving member 43 to the tobacco stirring assembly 5, thereby making the thin slices, stems and leaves mixed evenly by the tobacco stirring assembly 5.

[0051] In one embodiment of the blending device for preparing shredded tobacco of the utility model, the push plate 42 is an arc-shaped structure, and there are multiple fourth driving members 41 and push plates 42, which are respectively arranged along the circumference of the fifth driving member 43.

[0052] The utility model provides protection for tobacco shreds by arranging a plurality of fourth driving members 41 and a plurality of pushing plates 42 along the circumference of the fifth driving member 43, and arranging the pushing plates 42 into an arc structure, thereby effectively reducing the possibility of tobacco shreds being damaged.

[0053] In one embodiment of the tobacco shred preparation blending device of the utility model, as Figures 1 to 4 As shown, an annular rack frame 22 is arranged on the outside of the blending barrel 2; the blending equipment for preparing tobacco also includes a blending barrel rotating assembly 6, the blending barrel rotating assembly 6 includes a sixth driving member 61 and a first transmission gear 62, the sixth driving member 61 is arranged at the second end of the connecting frame 32, the output shaft of the sixth driving member 61 is connected to the first transmission gear 62, and the first transmission gear 62 is engaged with the annular rack frame 22 to drive the blending barrel 2 to rotate.

[0054] When the sixth driving member 61 is running, the sixth driving member 61 drives the first transmission gear 62 to rotate, and the rotation of the first transmission gear 62 further drives the annular rack 22 and the blending barrel 2 to rotate, thereby driving the thin slices, stem shreds, and leaf shreds to be blended stored in the blending barrel 2 to rotate, further improving the tobacco mixing effect.

[0055] In one embodiment of the tobacco shred preparation blending device of the utility model, as Figures 1 to 4 As shown, the mixing barrel rotating assembly 6 also includes a fixed shaft frame 63 and a second transmission gear 64 , the first end of the fixed shaft frame 63 is connected to the base 1 , the second end of the fixed shaft frame 63 is rotationally connected to the second transmission gear 64 , and the second transmission gear 64 is meshed with the annular rack frame 22 .

[0056] The utility model connects the first end of the fixed shaft frame 63 to the base 1, the second end of the fixed shaft frame 63 is rotatably connected to the second transmission gear 64, the second transmission gear 64 is meshed with the annular rack frame 22, and the fixed shaft frame 63 and the second transmission gear 64 provide support for the rotation of the mixing cylinder 2.

[0057] In one embodiment of the tobacco shred preparation blending device of the utility model, as Figures 1 to 4 As shown, a feed port 23, a seventh driving member 24 and a blocking plate 25 are also provided in the mixing tube 2. The feed port 23 passes through the mixing tube 2. The seventh driving member 24 and the blocking plate 25 are both provided in the mixing tube 2. The blocking plate 25 is provided corresponding to the feed port 23. The output shaft of the seventh driving member 24 is connected to the blocking plate 25, and is used to drive the blocking plate 25 to move so as to block and open the feed port 23.

[0058] When the sixth driving member 61 is running, the mixing barrel 2 is driven to rotate, so that the discharge port 23 or the feed barrel 21 moves to Figure 1 When the sixth driving member 61 drives the blending barrel 2 to move to another position, the seventh driving member 24 drives the blocking plate 25 to move, so that the blocking plate 25 opens the discharge port 23, and then the thin slices, stems and leaves enter the blending barrel 2 from the feeding barrel 21 and the discharge port 23. When the sixth driving member 61 drives the blending barrel 2 to move to another position, the seventh driving member 24 drives the blocking plate 25 to move, so that the blocking plate 25 blocks the discharge port 23.

[0059] It should be noted that, during the feeding process, the tobacco pushing assembly 4 and the tobacco stirring assembly 5 can be in a working state or in a stopped state, which is not limited here.

[0060] In this embodiment, the seventh driving member 24 is an electric axle seat. The seventh driving member 24 is not limited to an electric axle seat, and can also be driven by a linear motor, an electric cylinder or a cylinder, etc. As long as the rotation adjustment of the blocking plate 25 can be achieved, no specific limitation is made here.

[0061] The utility model arranges both the seventh driving member 24 and the blocking plate 25 in the blending cylinder 2, and the blocking plate 25 is arranged corresponding to the discharge port 23, the output shaft of the seventh driving member 24 is connected to the blocking plate 25, and the blocking plate 25 is driven by the seventh driving member 24 to move, thereby blocking and opening the discharge port 23, thereby ensuring that the tobacco will not leak from the discharge port 23 during the rotation of the blending cylinder 2.

[0062] Furthermore, the feed opening 23 and the blocking plate 25 are arranged in a semicircular shape, and the size of the blocking plate 25 is larger than the size of the feed opening 23 . Such an arrangement enables the blocking plate 25 to block the size of the feed opening 23 .

[0063] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A blending device for preparing shredded tobacco, characterized in that: include: Base; A mixing cylinder, wherein the mixing cylinder is fixed on the base; A fixing assembly, the fixing assembly comprising a fixing frame and a connecting frame, the first end of the fixing frame is connected to the base, the second end of the fixing frame is connected to the first end of the connecting frame, and the second end of the connecting frame is rotatably connected to the mixing barrel; A tobacco shred pushing assembly, the tobacco shred pushing assembly is arranged at the center of the blending cylinder, and the tobacco shred pushing assembly is used to push the tobacco shreds at the center of the blending cylinder to the edge of the blending cylinder; A tobacco stirring assembly, wherein the tobacco stirring assembly is arranged along the circumference of the tobacco pushing assembly, and the tobacco stirring assembly includes a first driving member, a second driving member and a mixing plate, wherein the first driving member is arranged on the inner wall of the blending barrel, and the output shaft of the first driving member is connected to the second driving member to drive the second driving member to rotate, and the output shaft of the second driving member is connected to the mixing plate.

2. The blending equipment for preparing shredded tobacco according to claim 1, characterized in that: The tobacco stirring assembly also includes a third driving member and a connecting rod. The output shaft of the second driving member is connected to the third driving member, and the output shaft of the third driving member is connected to the connecting rod. The mixing plates are respectively arranged on both ends of the connecting rod.

3. The blending equipment for preparing shredded tobacco according to claim 1, characterized in that: The blending cylinder is provided with a feeding cylinder, and the feeding cylinder is communicated with the blending cylinder.

4. The blending equipment for preparing shredded tobacco according to claim 1, characterized in that: The tobacco pushing assembly includes a fourth driving member and a pushing plate. The fourth driving member is arranged at the center of the blending barrel. The output shaft of the fourth driving member is connected to the pushing plate to drive the pushing plate to push the tobacco to the edge of the blending barrel.

5. The blending equipment for preparing shredded tobacco according to claim 4, characterized in that: The tobacco pushing assembly further comprises a fifth driving member, which is arranged at the center of the blending barrel, and an output shaft of the fifth driving member is connected to the fourth driving member for driving the fourth driving member to rotate.

6. The blending equipment for preparing shredded tobacco according to claim 5, characterized in that: The push plate is an arc-shaped structure, and there are a plurality of the fourth driving member and the push plate, which are respectively arranged along the circumference of the fifth driving member.

7. The blending equipment for preparing shredded tobacco according to any one of claims 1 to 6, characterized in that: An annular rack is arranged outside the mixing cylinder; The blending equipment for preparing tobacco also includes a blending barrel rotating assembly, which includes a sixth driving member and a first transmission gear. The sixth driving member is arranged at the second end of the connecting frame, and the output shaft of the sixth driving member is connected to the first transmission gear. The first transmission gear is engaged with the annular rack frame to drive the blending barrel to rotate.

8. The blending equipment for preparing shredded tobacco according to claim 7, characterized in that: The mixing barrel rotating assembly also includes a fixed shaft frame and a second transmission gear, wherein a first end of the fixed shaft frame is connected to the base, a second end of the fixed shaft frame is rotationally connected to the second transmission gear, and the second transmission gear is meshed with the annular rack frame.

9. The blending equipment for preparing shredded tobacco according to claim 8, characterized in that: A feeding port, a seventh driving member and a blocking plate are also provided in the mixing barrel. The feeding port passes through the mixing barrel. The seventh driving member and the blocking plate are both provided in the mixing barrel, and the blocking plate is provided corresponding to the feeding port. The output shaft of the seventh driving member is connected to the blocking plate, so as to drive the blocking plate to move so as to block and open the feeding port.

10. The blending equipment for preparing shredded tobacco according to claim 9, characterized in that: The feed opening and the blocking plate are arranged in a semicircular shape, and the size of the blocking plate is larger than the size of the feed opening.

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