Stem separating device

Abstract

The utility model belongs to the technical field of tobacco stem removal, and particularly relates to a stem separating device. The stem separating device comprises an air chamber box body, at least two vent holes arranged at intervals and an air baffle used for covering the at least two vent holes at a time are arranged on the air chamber box body, the air baffle is installed on the air chamber box body through a threaded fastener, and an installation hole, used for installing the threaded fastener, in the air chamber box body is a round hole. The penetrating holes, allowing the threaded fasteners to penetrate through, in the wind shield are long holes so that the position of the wind shield can be adjusted to change the coverage area of the ventilation holes, and solid parts used for corresponding to the long holes in the wind shield to avoid air leakage of the long holes are arranged between the ventilation holes capable of being covered by the wind shield. The long holes in the air baffle correspond to the air chamber box body, it is guaranteed that the long holes cannot leak air when the air baffle covers the ventilation holes, therefore, the air inlet amount is prevented from being affected, meanwhile, the air baffle can cover the ventilation holes, the opening degree of the ventilation holes is zero, a large size does not need to be set, and the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a stem and stalk separation device, belonging to the technical field of tobacco stalk removal. Background Technique

[0002] At present, high-grade cigarettes and medium and thin cigarette sticks are developing rapidly. It is particularly important to improve the quality of high-grade cigarettes and medium and thin cigarette sticks. The proportion of stems and stalks in cut tobacco is one of the key factors determining the quality of high-grade cigarettes and medium and thin cigarette sticks. Too high a content (size and number) of stems and stalks in cut tobacco will not only pierce the cigarette stick, resulting in appearance quality defects and affecting consumers' experience of the product, but also affect the stability of the cigarette stick quality (draw resistance, single stick weight, density consistency, etc.) and the smoking sensory quality. Therefore, how to reduce the proportion of stems and stalks in cut tobacco to improve the purity of cut tobacco has always been the direction of the industry's efforts.

[0003] The stem and stalk separation system of a cigarette making machine is one of the main means to reduce the proportion of stems and stalks in cut tobacco. By controlling the wind speed in the separation system and using the different suspension speeds of cut tobacco and stems and stalks in the air flow, the cut tobacco and stems and stalks are separated, thereby reducing the proportion of stems and stalks in cut tobacco. The stem and stalk separation system of a cigarette making machine mainly includes ventilation holes, lower air inlets, air chambers and feeding devices. Among them, the ventilation holes are important devices for adjusting the air volume to control the wind speed, and usually different degrees of shielding of the ventilation holes are adopted to achieve the control of the air intake volume.

[0004] For example, a Chinese utility model patent with the authorization announcement number CN215898855U and the authorization announcement date of February 25, 2022 discloses a three-stage cut tobacco air separation machine air volume adjustment control device. This air volume adjustment control device (i.e., the stem separation device) includes an air separation box body (i.e., the air chamber box body) and an air separation baffle (i.e., the wind deflector). An air inlet (i.e., the ventilation hole) is provided on the side wall of the air separation box body. The air separation baffle includes a first baffle, a second baffle, and a third baffle that are sequentially arranged at the air inlet from left to right. Each baffle is installed on the air separation box body through a bolt structure. The above device has two different embodiments. In the first embodiment, six waist-shaped holes are provided above the air inlet. Two through holes corresponding to the waist-shaped holes are symmetrically arranged on each of the first baffle, the second baffle, and the third baffle. Each baffle is installed on the air separation box body through screws passing through the waist-shaped holes and the through holes and nuts that cooperate with the screw thread structure. Moreover, the rod parts of the screws are all adapted to the corresponding waist-shaped holes and through holes, so that each wind deflector can move along the waist-shaped holes, thereby adjusting the specific range of each wind deflector covering the air inlet. In the second embodiment, a plurality of through holes are provided on the air separation box body above the air inlet. Waist-shaped holes corresponding to the through holes are respectively provided on the first baffle, the second baffle, and the third baffle. Each baffle is installed on the air separation box body through screws passing through the waist-shaped holes and the through holes and nuts that cooperate with the screw thread structure. Moreover, the rod parts of the screws are all adapted to the corresponding waist-shaped holes and through holes, so that the waist-shaped holes in each wind deflector move along the corresponding screws to adjust the size of the air inlet.

[0005] However, in the above first embodiment, the multiple waist-shaped holes on the box body can also ventilate into the box body. Therefore, during the air volume adjustment process of the three baffles, when each baffle moves downward, the opening degree of the air inlet gradually decreases, the air intake decreases, while the waist-shaped holes gradually increase, and the air intake increases. As a result, the influencing factors of the air intake increase, increasing the difficulty of air volume adjustment. In the second embodiment, in order to prevent the waist-shaped holes on the wind deflector from leaking air, the length of the wind deflector needs to be increased to ensure that when the wind deflector moves downward to the state of completely covering the air inlet, the waist-shaped holes are located above the air inlet, enabling the air intake at the air inlet to be zero. Obviously, the length of the wind deflector is at least twice the length of the air inlet, but only a part is used to block the air inlet, which is a great waste of the area of the wind deflector and increases the production cost of the wind deflector. In addition, the bolt structure for installing the wind deflector in both embodiments is a screw and a nut. When screwing, since the bolt head is located inside the air separation box, it is necessary to first fix the bolt rod part to ensure smooth screwing of the nut, resulting in a very complex screwing operation. Utility Model Content

[0006] The purpose of the present utility model is to provide a stem separation device to solve the problems that when the existing wind deflector is movably connected to the air chamber, the influencing factors of the air volume increase when the strip-shaped holes are on the air chamber box body above the air inlet, resulting in an increase in the adjustment difficulty, and the size of the wind deflector increases when the strip-shaped holes are on the wind deflector, resulting in an increase in cost.

[0007] To achieve the above object, the stem and label separation device in the present utility model adopts the following technical solution:

[0008] A stem and label separation device includes an air chamber box body. At least two ventilation holes are arranged at intervals on the air chamber box body, and a wind shield for covering at least two ventilation holes at one time. The wind shield is installed on the air chamber box body through threaded fasteners. The installation holes on the air chamber box body for installing the threaded fasteners are round holes, and the through holes on the wind shield for the threaded fasteners to pass through are long holes, so as to adjust the position of the wind shield and thus change the covered area of the ventilation holes. There is a solid part between the ventilation holes that can be covered by the wind shield, which corresponds to the long holes on the wind shield to avoid air leakage from the long holes.

[0009] The beneficial effects of the above technical solution are as follows: The present utility model belongs to an improved invention. Two or more ventilation holes arranged at intervals are provided on the air chamber box body, and a wind shield that can cover at least two ventilation holes at one time. The wind shield is installed on the air chamber box body through threaded fasteners, and the installation holes on the air chamber box body for installing the threaded fasteners are round holes, and the through holes on the wind shield for the threaded fasteners to pass through are long holes. By arranging multiple ventilation holes at intervals, the air chamber box body is located between the ventilation holes. Thus, the long holes on the wind shield can correspond to the solid part between the ventilation holes covered by the wind shield. Therefore, when the wind shield covers the ventilation holes, the long holes on the wind shield will not leak air, avoiding affecting the air intake volume, thereby reducing the influencing factors of the air intake volume at the ventilation holes and reducing the difficulty of air volume adjustment. At the same time, since the long holes on the wind shield can move to the position of the solid part between the ventilation holes, the wind shield does not need to be set with a large size, and the production cost can be reduced.

[0010] Further, only one long hole is provided on the wind shield and is arranged in the middle of the wind shield.

[0011] Further, the number of ventilation holes that can be covered by the wind shield is an even number, and the ventilation holes are symmetrically arranged on both sides of the solid part.

[0012] Further, the ventilation holes are strip-shaped holes that are consistent with the extension direction of the long holes on the wind shield.

[0013] Further, the lengths of the ventilation holes are equal, and the two ends in the length direction are respectively aligned.

[0014] Further, the installation holes are located outside the ventilation holes that can be covered by the wind shield, and the size of the wind shield and the size of the long holes meet the requirements of being able to completely cover and completely open the ventilation holes.

[0015] Further, the ventilation holes are strip-shaped holes that are consistent with the extending direction of the long holes on the wind deflector. The lengths of the ventilation holes are equal, and the two ends in the length direction are aligned respectively. When the wind deflector is in the fully opened state, the edge of the wind deflector is aligned with the ends of the ventilation holes. The length of the long holes on the wind deflector is equal to the length of the ventilation holes.

[0016] Further, the threaded fastener is a screw, and the mounting holes on the air chamber box body are threaded holes.

[0017] Further, the number of ventilation holes that the wind deflector can cover is more than three, and the ventilation holes are arranged at equal intervals.

[0018] Further, only one wind deflector is provided, and this wind deflector can cover all the ventilation holes. Description of the Drawings

[0019] Figure 1 is a three-dimensional schematic diagram of an embodiment of the stem and stalk separation device of the present utility model;

[0020] Figure 2 is a front view of an embodiment of the stem and stalk separation device of the present utility model;

[0021] Figure 3 is a side view of an embodiment of the stem and stalk separation device of the present utility model;

[0022] Figure 4 is a front view of the air separation chamber main body of an embodiment of the stem and stalk separation device of the present utility model.

[0023] In the figure: 1, fastening bolt; 2, air chamber box body; 21, air separation chamber main body; 22, front side plate; 23, rear side plate; 3, air cavity; 4, wind deflector; 41, long hole; 5, fixing screw; 6, ventilation hole; 7, lower adjusting plate; 8, adjusting screw; 9, arc-shaped long hole; 10, left side plate; 11, right side plate; 12, stem and stalk discharge port; 13, screw; 14, feed port; 15, cut tobacco discharge port; 16, lower front side plate. Detailed Embodiments

[0024] The features and performance of the present utility model will be further described in detail below in conjunction with the embodiments.

[0025] In view of the technical problems existing in the prior art, the basic technical concept of the present utility model is as follows: More than two ventilation holes are arranged at intervals on the air chamber box body, and a wind baffle capable of covering at least two ventilation holes at one time is provided. The wind baffle is installed on the air chamber box body through threaded fasteners, and the installation holes for installing the threaded fasteners on the air chamber box body are round holes, and the through holes for the threaded fasteners to penetrate through the wind baffle are long holes. By arranging the ventilation holes in multiple numbers and at intervals, thus, the solid part between the long holes on the wind baffle and the ventilation holes covered by the wind baffle can correspond, and when the wind baffle covers the ventilation holes, the long holes on the wind baffle will not leak air, avoiding affecting the air intake volume. At the same time, since the long holes on the wind baffle can move to the position of the solid part between the ventilation holes, the wind baffle does not need to be set to a large size, effectively reducing the production cost.

[0026] An embodiment of the stem and sticker separation device in the present utility model:

[0027] Such as Figure 1 And Figure 2 As shown in the figure, the cigarette maker stem and sticker separation device includes an air chamber box body 2 for sorting the mixture of cut tobacco and stems and stickers. The air chamber box body 2 is of a cuboid structure. A cut tobacco discharge port 15 for discharging cut tobacco from the air chamber box body 2 is arranged at the upper end of the air chamber box body 2, and a stem and sticker discharge port 12 for discharging stems and stickers from the air chamber box body 2 is arranged at the lower end of the air chamber box body 2, facilitating the discharge of stems and stickers. The air chamber box body 2 further includes an air separation chamber main body 21, and an air cavity 3 penetrating through the front and back is arranged on the air separation chamber main body 21. Front side plates 22 and rear side plates 23 for covering the front and rear ends of the air cavity 3 are respectively arranged on the front and rear sides of the air chamber box body 2. During production and manufacturing, the air separation chamber main body 21, the front side plates 22 and the rear side plates 23 can be produced and manufactured separately, reducing the manufacturing difficulty.

[0028] Such as Figures 1-3 As shown in the figure, the front side plates 22 and the rear side plates 23 are respectively fixed on the air separation chamber main body 21 through a plurality of fastening bolts 1. In this embodiment, two fastening bolts 1 are respectively arranged on the front side plates 22 and the rear side plates 23, and the fastening bolts 1 are respectively located at the two corners at the upper end of the front side plates 22 or the rear side plates 23. The tops of the front side plates 22 and the rear side plates 23 are flush with the top of the air separation chamber main body 21. The left side surfaces of the front side plates 22 and the rear side plates 23 and the right side surfaces of the front side plates 22 and the rear side plates 23 are respectively flush with the left end surface and the right end surface of the air separation chamber main body 21, and the bottom of the rear side plate 23 is flush with the bottom of the air separation chamber main body 21, so as to avoid the front side plates 22 and the rear side plates 23 occupying too much space. Among them, the front side plate 22 is set as a transparent plate, such as a glass plate, an acrylic plate, etc., and the dispersion condition of the stems and stickers in the air chamber box body 2 can be observed through the transparent front side plate 22.

[0029] The air cavity 3, the front side plate 22, and the rear side plate 23 together enclose the inner cavity of the air chamber box body 2. The inner cavity of the air chamber box body 2 includes at least one gradually decreasing cavity with a gradually decreasing cross-section from top to bottom and at least one gradually increasing cavity with a gradually increasing cross-section from top to bottom. The gradually decreasing cavity with a gradually decreasing cross-section from top to bottom is defined as the first gradually changing cavity, and the gradually increasing cavity with a gradually increasing cross-section from top to bottom is defined as the second gradually changing cavity. The first gradually changing cavity and the second gradually changing cavity are arranged up and down and their cavity walls are directly connected. According to the Venturi effect, when the fluid passes through a reduced cross-section of the flow-through area, the fluid velocity increases, and the velocity is inversely proportional to the size of the cross-section of the flow-through area. Therefore, the air flow velocity at the lower end of the first gradually changing cavity is the largest, and the air flow velocity at the upper end is the smallest. The cut tobacco with stems entering the first gradually changing cavity will be dispersed by the fast air flow at the lower end and diffuse at the upper end of the first gradually changing cavity; the air flow velocity at the upper end of the second gradually changing cavity is the largest, and the air flow velocity at the lower end is the smallest. The cut tobacco with stems entering the second gradually changing cavity will be dispersed by the fast air flow at the upper end and diffuse at the lower end of the second gradually changing cavity, and the wind speed inside the air chamber box body 2 can change multiple times under the action of multiple gradually changing cavities.

[0030] As Figure 4 shown, in this embodiment, there are two first gradually changing cavities and two second gradually changing cavities, and the first gradually changing cavities and the second gradually changing cavities are alternately arranged in the up and down direction. The dotted line in the figure is the boundary line between the adjacent first gradually changing cavity and the second gradually changing cavity in the up and down direction. The gradually changing cavities are, in order from bottom to top, the first gradually changing cavity A31, the second gradually changing cavity A32, the first gradually changing cavity B33, and the second gradually changing cavity B34. The alternating arrangement of the first gradually changing cavity and the second gradually changing cavity in the up and down direction is the optimal arrangement method, which can make the air flow velocity in the air chamber box body 2 change alternately in size when the air flow flows from bottom to top. During use, after the cut tobacco with stems enters the air chamber box body 2, it will be dispersed by the air flow in the second gradually changing cavity B34 and diffuse at the lower end of the second gradually changing cavity B34. Among them, the lighter cut tobacco rises with the air flow, and the heavier stem pieces or cut tobacco with stem clusters fall; after the stem pieces or cut tobacco with stem clusters enter the first gradually changing cavity B33, they will be dispersed again by the fast air flow at the lower end of the first gradually changing cavity B33 and diffuse at the upper end of the first gradually changing cavity B33. Among them, the lighter cut tobacco rises with the air flow, and the heavier stem pieces or cut tobacco with stem clusters continue to fall; when the stem pieces or cut tobacco with stem clusters enter the second gradually changing cavity B32, they diffuse at the lower end of the second gradually changing cavity B32, so that the lighter cut tobacco among them rises with the air flow, and the heavier stem pieces or cut tobacco with stem clusters fall; when the heavier stem pieces or cut tobacco with stem clusters enter the first gradually changing cavity B31, they are dispersed by the fast air flow at the lower end of the first gradually changing cavity B31 and diffuse at the upper end of the first gradually changing cavity B31. The lighter cut tobacco mixed in it rises with the air flow, and the remaining stem pieces or cut tobacco with stem clusters sink and are discharged. Therefore, the cut tobacco with stems can undergo multiple upward and downward diffusions in the air chamber box body 2 and tumble violently under the action of variable wind speeds, so that the stem pieces and cut tobacco are evenly dispersed, thereby increasing the removal ratio of stem pieces.

[0031] AsFigures 1-4 As shown, the tapered chambers all include four chamber walls at the front, rear, left, and right, and the left and right chamber walls of the tapered chambers are symmetrically arranged. Among them, as Figure 2 and 4 shown, the left and right chamber walls of the first tapered chamber A31 and the first tapered chamber B33 gradually approach each other from top to bottom, and the left and right chamber walls of the second tapered chamber A32 and the second tapered chamber B34 gradually move away from each other from top to bottom. The left and right chamber walls of each tapered chamber are smooth S-shaped curved surfaces to reduce the collision between the cut tobacco and the inner wall of the air chamber box 2, reduce the loss caused by the breakage of the cut tobacco, and will not block the upward or downward movement of the stem pieces and the cut tobacco. As Figure 1 and Figure 3 shown, the front and rear chamber walls of each tapered chamber are vertical and parallel plane walls.

[0032] As Figure 1 and Figure 3 shown, there is only one feed port 14, and the feed port 14 is located on the right chamber wall of the second tapered chamber B34. At this time, the cut tobacco containing stems can enter from the upper end of the air chamber box 2, so that the heavier stem pieces and cut tobacco pass through more tapered chambers. As Figure 2 and 4 shown, the maximum cross-section of the first tapered chamber A31 is smaller than the maximum cross-section of the first tapered chamber B33, which can make the wind speed in the lower part of the inner cavity of the air chamber box 2 relatively large, so that the cut tobacco containing stems sinking faces a faster airflow and is dispersed, so that the mixing of the cut tobacco containing stems is more intense and more evenly dispersed.

[0033] As Figure 1 shown, an upper air inlet structure is provided on the front side plate 22 of the air chamber box 2, and the upper air inlet structure corresponds to the widest part of the air chamber 3. The upper air inlet structure mainly includes ventilation holes 6 and a wind baffle 4, as Figure 1 and Figure 2 shown. The wind baffle 4 is installed on the front side plate 22 of the air chamber box 2 through threaded fasteners. In this embodiment, the threaded fasteners are set as fixing screws 5. When adjusting the wind baffle, only the fixing screws need to be screwed, reducing the operation difficulty. The number of ventilation holes 6 that the wind baffle 4 can cover is an even number. In this embodiment, the ventilation holes 6 are set as strip-shaped holes and there are six, as Figure 2 shown. The lengths of the ventilation holes 6 are the same, the upper and lower ends are aligned, and they are arranged at equal intervals. There is only one wind baffle 4, and it can completely cover all the ventilation holes 6. A long hole 41 for the fixing screw 5 to pass through is provided at the midline of the wind baffle 4. The length of the long hole 41 is the same as the length of the ventilation hole 6, and the ventilation hole 6 and the long hole 41 on the wind baffle 4 extend in the same direction. The long hole 41 on the wind baffle 4 corresponds to the solid part between the middle two ventilation holes 6, and the ventilation holes 6 are symmetrically arranged on both sides of the solid part. When the wind baffle 4 completely covers the ventilation holes 6, the long hole 41 corresponds to the solid part to ensure no air leakage.

[0034] Mounting holes are provided at corresponding positions on the front side plate 22. The mounting holes are threaded holes and can be in threaded cooperation with the fixing screws 5. The threaded holes are located outside the lower ends of the ventilation holes 6. Thus, the wind deflector 4 can fully open each ventilation hole 6, and at this time, the upper edge of the wind deflector 4 is flush with the lower ends of each ventilation hole 6. The size of the wind deflector 4 and the size of the long hole 41 are such that they can fully cover and fully clear the ventilation holes 6. During use, loosen the fixing screws 5, and the vertical position of the movable wind deflector 4 relative to the front side plate 22 can be adjusted, thereby adjusting the area covering the ventilation holes 6. During the adjustment process, the air intake volume at the ventilation holes 6 can vary continuously, enabling stepless adjustment of the wind speed in the air chamber box 2. When the wind deflector 4 is moved to a suitable position, tighten the fixing screws 5 to fix the wind deflector 4. When the wind deflector 4 is moved to the lowest position, the wind deflector 4 completely clears the ventilation holes 6, and the ventilation holes 6 are fully open; when the wind deflector 4 is moved to the highest position, the wind deflector 4 completely covers the ventilation holes 6, and the ventilation holes 6 are completely closed.

[0035] As Figure 1 Shown in the figure, a lower air intake structure is provided below the air chamber box 2. The lower air intake structure includes a left side plate 10, a right side plate 11, and a lower front side plate 16 connected to the air chamber box. Among them, the front end face, left end face, and right end face of the lower front side plate 16 are respectively flush with the front end face, left end face, and right end face of the upper front side plate 22. The front end faces of the left side plate 10 and the right side plate 11 are connected to the rear end face of the lower front side plate. The left end face of the left side plate 10 is flush with the left end face of the air separation chamber 2, and the right end face of the right side plate 11 is flush with the right end face of the air separation chamber 2, so that the lower air intake structure does not protrude from the air separation chamber 2, avoiding occupying too much space. A lower adjustment plate 7 is hingedly provided between the rear ends of the tops of the left side plate 10 and the right side plate 11 by screws 13. Threaded holes that are in threaded cooperation with the corresponding screws 13 are provided at the upper ends of the left and right sides of the lower adjustment plate 7, and through holes for the corresponding screws 23 to pass through are provided at corresponding positions on the left side plate 10 and the right side plate 11. The structure is simple and convenient for layout. The rear side of the lower air intake structure is arranged in an open manner, facilitating the rotational adjustment of the lower adjustment plate 7.

[0036] The lower adjustment plate 7, the left side plate 10, the right side plate 11, and the rear side plate 12 together enclose a lower air intake opening, and the lower air intake opening is simultaneously used as the stalk residue discharge port 12. Arc-shaped long holes 9 for adjusting different positions of the lower adjustment plate 7 are provided on both the left side plate 10 and the right side plate 11. The centers of the circles where the arc-shaped long holes 9 on the two side plates are located coincide with the hinge centers on the corresponding sides of the lower adjustment plate 7. The central angle of the arc-shaped long hole 9 is not less than 90 degrees. In this embodiment, the central angle of the arc-shaped long hole 9 is equal to 90 degrees, and the connecting lines between the two ends of the arc-shaped long hole 9 and the center of the circle where it is located are respectively horizontal and vertical lines, so that the adjustment stroke of the lower adjustment plate 7 has a fully open position when in the vertical state and a fully closed position when in the horizontal state.

[0037] The lower adjusting plate 7 is fixed to the corresponding side plate by a threaded fastener passing through the arc-shaped long hole 9, and the connection position of the lower adjusting plate 7 and the threaded fastener is located at the end of the lower adjusting plate 7 far from the hinge center. In this embodiment, the threaded fastener is set as an adjusting screw 8, and threaded holes that are threadedly engaged with the corresponding adjusting screws 8 are provided at corresponding positions on the left and right sides of the lower adjusting plate 7. The head of the adjusting screw 8 is used to press against the left side plate 10 and the right side plate 11. When in use, loosen the adjusting screw 8 so that the lower adjusting plate 7 can rotate between the left and right side plates, thereby adjusting the opening degree of the lower air inlet, and realizing the adjustment of the air speed in the stem-separating device 2. When it rotates to a proper position, tighten the adjusting screw 8 to fix the lower adjusting plate 7, and the adjustment operation is simple and convenient. When the lower adjusting plate 7 does not rotate, the lower adjusting plate 7 is in a vertical state. At this time, the lower air inlet is completely opened and the air intake volume is the largest; when the lower adjusting plate 7 rotates 90°, the lower adjusting plate 7 is in a horizontal state. At this time, the lower air inlet is completely closed and the air intake volume is the smallest, being zero.

[0038] When in use: The cut tobacco containing stems enters the air separation chamber 2 from the feed inlet 14, and then is dispersed by the airflow in the second tapered chamber B34 and diffuses at the lower end in the second tapered chamber B34. Among them, the lighter cut tobacco rises with the airflow to the cut tobacco discharge port 15 and is discharged, and the heavier stem or cut tobacco containing stem mass falls; after the stem or cut tobacco containing stem mass sinks into the first tapered chamber B33, it will be dispersed again by the fast airflow at the lower end of the first tapered chamber B33 and diffuses at the upper end in the first tapered chamber B33. Among them, the lighter cut tobacco rises with the airflow to the cut tobacco discharge port 15 and is discharged, and the heavier stem or cut tobacco containing stem mass continues to fall; when the stem or cut tobacco containing stem mass sinks into the second tapered chamber B32, it diffuses at the lower end of the second tapered chamber B32, so that the lighter cut tobacco among them rises with the airflow to the cut tobacco discharge port 15 and is discharged, and the heavier stem or cut tobacco containing stem mass falls; the heavier stem or cut tobacco containing stem mass sinks into the first tapered chamber B31, is dispersed by the fast airflow at the lower end of the first tapered chamber B31, and diffuses at the upper end of the first tapered chamber B31. The lighter cut tobacco mixed in it rises with the airflow to the cut tobacco discharge port 15 and is discharged, and the remaining stem or cut tobacco containing stem mass sinks to the stem discharge port 12 and is discharged, realizing the separation of the stem and the cut tobacco. By making the cut tobacco containing stems rise and disperse, and fall and disperse multiple times in the air separation chamber 2, the cut tobacco and the stems are dispersed more evenly, so that the stems can be separated better, and thus the stem rejection ratio is improved. At the same time, after the cut tobacco containing stems enters the air separation chamber 2, by adjusting the area of the upper adjusting plate 4 covering the ventilation holes 6, and cooperating with adjusting the position of the lower adjusting plate 7 to adjust the opening degree of the lower air inlet, the air speed in the air separation chamber 2 is jointly adjusted. At this time, the dispersion situation of the stems and the cut tobacco in the air separation chamber 2 can be observed through the front side plate 22, and the sorting result can be observed, and the upper adjusting plate 4 and the lower adjusting plate 7 are adjusted accordingly.

[0039] In other embodiments, when setting the number of windshields, two windshields can be set. In this case, the windshields can be set to the same size and the same structure. If the number of ventilation holes remains unchanged, they can respectively cover half of the ventilation holes. Of course, the number of ventilation holes can also be changed. For example, each windshield can cover four or two ventilation holes respectively. In other embodiments, when setting the arrangement of the ventilation holes, they can be arranged at unequal intervals, and the intervals corresponding to the long holes of the windshields between the ventilation holes can be set wider.

[0040] In other embodiments, when setting the threaded fasteners for fixing the windshields, bolts and nuts can be set. In this case, the mounting holes on the air chamber box are clearance holes. Pass the bolts through the mounting holes and the long holes of the windshields, and the protruding part is threadedly engaged with the nuts. Tightening the nuts can fix the windshields on the air chamber box, and loosening the nuts can loosen the windshields.

[0041] In other embodiments, when setting the moving range of the windshields, the mounting holes on the air chamber box can be set below the ventilation holes. At this time, when the windshields move to the lowest position, the upper edges of the windshields are located below the ends of the ventilation holes. At the same time, the windshields can be set to a larger size, and the length of the long holes of the windshields can be longer than the length of the ventilation holes to ensure that the windshields can move upward to completely cover the ventilation holes.

[0042] In other embodiments, when setting the positions of the mounting holes, the mounting holes can be set on the air chamber box between the ventilation holes. At this time, when the windshields are in the lowest position, they still cover a part of the area of the ventilation holes.

[0043] In other embodiments, when the ventilation holes are strip-shaped holes and setting the sizes of the ventilation holes, the ventilation holes can be set to different sizes, and the ends of the lower ends of the ventilation holes may not be aligned. At this time, the mounting holes can be set below the ventilation hole with the longest length so that the windshields can completely clear the ventilation holes.

[0044] In other embodiments, when setting the shapes of the ventilation holes, they can be set as rectangular holes with a certain width.

[0045] In other embodiments, when setting the number and arrangement of the ventilation holes, the ventilation holes can be set to an odd number, such as five. At this time, the parts of the windshields on both sides of the long holes can respectively cover three and two. Of course, it can also be set to seven, or other odd numbers.

[0046] In other embodiments, when setting the long holes on the wind deflector, two long holes can be set. The two long holes are symmetrically arranged with respect to the midline of the wind deflector, and the part between the two long holes can completely cover all the ventilation holes. Or the two long holes are respectively opposite to the solid parts between the ventilation holes, and the size of the wind deflector can completely cover all the ventilation holes. At the same time, mounting holes are respectively arranged at the positions on the air chamber box body opposite to the two long holes, so that the wind deflector can move relative to the air chamber box body under the limitation of the two long holes.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stem and label separation device, comprising an air chamber box body, characterized in that, There are at least two ventilation holes arranged at intervals on the air chamber box body and a wind deflector for covering at least two ventilation holes at one time. The wind deflector is installed on the air chamber box body through threaded fasteners. The installation holes on the air chamber box body for installing the threaded fasteners are round holes, and the through holes on the wind deflector for the threaded fasteners to pass through are long holes, so as to adjust the position of the wind deflector and thus change the coverage area of the ventilation holes. There is a solid part between the ventilation holes that can be covered by the wind deflector to correspond to the long holes on the wind deflector to prevent air leakage from the long holes.

2. The stem label separation device according to claim 1, characterized in that: There is only one long hole on the wind deflector and it is arranged centrally with respect to the wind deflector.

3. The stem label separation device according to claim 2, wherein: The number of ventilation holes that can be covered by the wind deflector is an even number and each ventilation hole is symmetrically arranged on both sides of the solid part.

4. The stem and label separating device according to any one of claims 1-3, characterized in that: The ventilation holes are strip-shaped holes that are consistent with the extension direction of the long holes on the wind deflector.

5. The stem label separating device according to claim 4, wherein: The lengths of all ventilation holes are equal and the two ends in the length direction are respectively aligned.

6. The stem label separation device according to any one of claims 1-3, characterized in that: The installation holes are located outside the ventilation holes that can be covered by the wind deflector, and the size of the wind deflector and the size of the long holes meet the requirements of being able to completely cover and completely open the ventilation holes.

7. The stem label separation device according to claim 6, characterized in that: The ventilation holes are strip-shaped holes that are consistent with the extension direction of the long holes on the wind deflector. The lengths of all ventilation holes are equal and the two ends in the length direction are respectively aligned. When the wind deflector is in the fully open state, the edge of the wind deflector is aligned with the ends of each ventilation hole, and the length of the long hole on the wind deflector is equal to the length of the ventilation hole.

8. The stem and tag separation device according to any one of claims 1-3, characterized in that: The threaded fasteners are screws and the installation holes on the air chamber box body are threaded holes.

9. The stem label separation device according to any one of claims 1-3, characterized in that: The number of ventilation holes that can be covered by the wind deflector is more than three and each ventilation hole is arranged at equal intervals.

10. The stem label separation device according to any one of claims 1-3, characterized in that: There is only one wind deflector and this wind deflector can cover all ventilation holes.

Images