Head for detecting stem slivers after winnowing of tobacco shreds

Abstract

The utility model discloses a sliver detection machine head after tobacco shred winnowing, which comprises a lifting belt used for conveying slivers after tobacco shred winnowing; an outlet is formed in the bottom of the rack box, an inlet is formed in the upper portion of the side wall of the rack box, and the discharging end of the lifting belt is communicated with the inlet; the lower baffle is arranged on the outlet in an openable and closable manner; the laser distance measuring sensor is arranged on the inner wall of the top of the rack box and used for detecting the distance between the surface of the sliver pile in the rack box and the inner wall of the top of the rack box. According to the sliver detection machine head after tobacco winnowing, slivers at the discharging end of the lifting belt are automatically recycled through the rack box, automatic sliver recycling is achieved, the sliver removing amount can be automatically measured through the laser distance measuring sensor, labor cost is saved, and labor force is liberated.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco stem collecting equipment, and more specifically, to a stem detection head after tobacco leaves are separated by air separation. Background Art

[0002] At present, during the production process of tobacco leaves, a certain proportion of stems need to be removed from the tobacco leaves by air separation. After each batch of tobacco leaves is separated by air separation, the stems pass through the discharge end of the lifting belt and are collected in a recycling collection bag, and then are weighed and transported out of the production site.

[0003] During this production process, the amount of removed stems is measured visually by operators, and the stems are manually recycled, which is time-consuming and laborious, with poor results and a waste of a large amount of labor.

[0004] Therefore, how to automatically measure the amount of removed stems and automatically recycle the stems has become a technical problem that urgently needs to be solved in this field. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a stem detection head after tobacco leaves are separated by air separation.

[0006] According to the utility model, a stem detection head after tobacco leaves are separated by air separation is provided, including:

[0007] A lifting belt for conveying the stems after the tobacco leaves are separated by air separation;

[0008] A frame box, with an outlet opened at the bottom of the frame box and an inlet opened above the side wall of the frame box, and the discharge end of the lifting belt is communicated with the inlet;

[0009] A lower baffle, which is arranged on the outlet in an openable and closable manner;

[0010] A laser ranging sensor, which is arranged on the inner wall of the top of the frame box and is used to detect the distance from the surface of the stem pile in the frame box to the inner wall of the top of the frame box.

[0011] Furthermore, it further includes:

[0012] A first bracket, which is arranged on the side wall of the frame box;

[0013] A cylinder, which is connected with the first bracket, and the telescopic end of the cylinder is hinged to the first end of a connecting rod;

[0014] A second bracket, which is arranged on the side wall of the frame box, the middle part of the connecting rod is rotatably connected with the second bracket, and the second end of the connecting rod is hinged to the lower baffle.

[0015] Furthermore, two magnetic switches are arranged on the cylinder for controlling the telescopic amount of the cylinder.

[0016] Further, it also includes a pressure - sensitive sensor, and the pressure - sensitive sensor is arranged at the connection part between the lower baffle and the connecting rod.

[0017] Further, the pressure - sensitive sensor is a varistor.

[0018] Further, there are 5 laser ranging sensors. One is arranged at the center position of the inner wall of the top of the frame box, and the other 4 are respectively arranged at the four corner positions of the inner wall of the top of the frame box.

[0019] Further, it also includes a vibrator, which is arranged on the side wall of the frame box.

[0020] Further, there are multiple vibrators, which are arranged at intervals on the peripheral side walls of the frame box.

[0021] Further, an observation port is also opened on the side wall of the frame box, and a draw - board that can be opened and closed is arranged on the observation port.

[0022] Further, it also includes a collection bag, and the collection bag is arranged below the outlet.

[0023] According to the technical content disclosed by the present utility model, it has the following beneficial effects:

[0024] The present utility model provides a stem - and - foreign - matter detection head after tobacco cut - filler winnowing. It realizes the automatic recovery of stems and foreign matters by the frame box automatically recovering the stems and foreign matters at the discharge end of the lifting belt. The laser ranging sensor can automatically measure the amount of stems and foreign matters removed, saving labor costs and liberating the labor force.

[0025] Through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings, other features and advantages of the present utility model will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of a stem - and - foreign - matter detection head after tobacco cut - filler winnowing provided according to an embodiment;

[0028] Figure 2 FIG. is a schematic diagram of the position structure of the lower baffle, connecting rod, and pressure - sensitive sensor provided according to an embodiment;

[0029] Figure 3 FIG. is a schematic diagram of the structure when the lower baffle of a stem - and - foreign - matter detection head after tobacco cut - filler winnowing provided according to an embodiment is closed;

[0030] Figure 4Schematic diagram of the structure when the lower baffle of a stem detection head after tobacco cuttings pneumatic separation according to an embodiment is opened.

[0031] Description of reference numerals: 1 - Laser distance sensor; 2 - Drawer plate; 3 - First bracket; 4 - Cylinder; 5 - Connecting rod; 6 - Pressure - sensitive sensor; 7 - Lower baffle; 8 - Vibrator; 9 - Frame box; 10 - Elevating belt; 11 - Second bracket. Detailed implementation manners

[0032] Now, various exemplary embodiments of the present invention will 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.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation to the present invention, its application, or its use.

[0034] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0035] In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0036] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] As Figure 1 shown, according to the present invention, a stem detection head after tobacco cuttings pneumatic separation is provided, including:

[0038] An elevating belt 10 for conveying the stems after tobacco cuttings pneumatic separation;

[0039] A frame box 9, with an outlet opened at the bottom of the frame box 9 and an inlet opened above the side wall of the frame box 9. The discharging end of the elevating belt 10 is communicated with the inlet;

[0040] A lower baffle 7, which is disposed on the outlet in an openable and closable manner;

[0041] A laser distance sensor 1, which is disposed on the inner wall of the top of the frame box 9 for detecting the distance from the surface of the stem pile in the frame box 9 to the inner wall of the top of the frame box 9. By using the laser distance sensor 1, the amount of stem rejection can be automatically measured, saving labor costs and liberating the labor force.

[0042] Specifically, when the lower baffle 7 is horizontal, the lower baffle 7 closes the outlet at the bottom of the frame box 9. The frame box 9 and the lower baffle 7 form an upper-opening container with a certain cross-sectional area.

[0043] The cuttings after tobacco cuttings winnowing are conveyed by the lifting belt 10. An inlet is opened above the side wall of the frame box 9. The discharging end of the lifting belt 10 is communicated with the inlet. After the cuttings are conveyed to the discharging end of the lifting belt 10, affected by gravity, they fall from the inlet above the side wall of the frame box 9 into the inside of the frame box 9.

[0044] The laser distance sensor 1 is arranged on the inner wall of the top of the frame box 9. The laser distance sensor 1 is used to detect the distance from the surface of the cuttings pile in the frame box 9 to the inner wall of the top of the frame box 9.

[0045] Furthermore, according to the present utility model, a detection head for cuttings after tobacco cuttings winnowing further includes:

[0046] The first bracket 3 is arranged on the side wall of the frame box 9;

[0047] The air cylinder 4 is connected with the first bracket 3, and the telescopic end of the air cylinder 4 is hinged to the first end of the connecting rod 5;

[0048] The second bracket 11 is arranged on the side wall of the frame box 9. The middle part of the connecting rod 5 is rotatably connected with the second bracket 11, and the second end of the connecting rod 5 is hinged to the lower baffle 7.

[0049] The first bracket 3 is used to support the base of the air cylinder 4, and the second bracket 11 is used to support the connecting rod 5. When the telescopic end of the air cylinder 4 extends, it pushes the first end of the connecting rod 5 to move downward. Since the middle part of the connecting rod 5 is rotatably connected with the second bracket 11, the second end of the connecting rod 5 moves upward under the principle of leverage, and then drives the lower baffle 7 to move upward. Since the second end of the connecting rod 5 is hinged to the lower baffle 7. Therefore, the upward-moving lower baffle 7 can be completely attached to the outlet opened at the bottom of the frame box 9, realizing the closing of the outlet at the bottom of the frame box 9 by the lower baffle 7. The frame box 9 and the lower baffle 7 form an upper-opening container with a certain cross-sectional area.

[0050] When the telescopic end of the air cylinder 4 retracts, it pushes the first end of the connecting rod 5 to move upward. Since the middle part of the connecting rod 5 is rotatably connected with the second bracket 11, the second end of the connecting rod 5 moves downward under the principle of leverage, and then drives the lower baffle 7 to move downward. Since the second end of the connecting rod 5 is hinged to the lower baffle 7. Therefore, the downward-moving lower baffle 7 can be separated from the outlet opened at the bottom of the frame box 9. The lower baffle 7 is perpendicular to the ground under the drive of the air cylinder 4, realizing the opening of the outlet at the bottom of the frame box 9 by the lower baffle 7. When the outlet of the frame box 9 is opened, the originally accumulated cuttings pile will fall out of the frame box 9 under the action of gravity.

[0051] In some alternative embodiments, it further includes a collection bag which is arranged below the outlet and is used for collecting the stem pieces that fall out from the rack box 9.

[0052] In some alternative embodiments, two magnetic switches are arranged on the cylinder 4 to control the telescopic amount of the cylinder 4 and ensure that the lower baffle 7 operates in place.

[0053] In some alternative embodiments, it further includes a pressure-sensitive sensor 6 which is arranged at the connection between the lower baffle 7 and the connecting rod 5. The pressure-sensitive sensor 6 can measure the weight of the stem pieces in the rack box 9.

[0054] Preferably, the pressure-sensitive sensor 6 is a pressure-sensitive resistor.

[0055] In some alternative embodiments, an observation port is further opened on the side wall of the rack box 9, and a drawboard 2 which can be opened and closed is arranged on the observation port.

[0056] Pulling open the drawboard 2 can observe the internal situation of the rack box 9, and is also convenient for maintenance and inspection and elimination of faults.

[0057] In some alternative embodiments, there are 5 laser distance sensors 1, one is arranged at the central position of the inner wall of the top of the rack box 9, and the other 4 are respectively arranged at the four corner positions of the inner wall of the top of the rack box 9.

[0058] The 5 laser distance sensors 1 can detect the distances from the surfaces of the stem piece piles at different positions in the rack box 9 to the inner wall of the top of the rack box 9.

[0059] In some alternative embodiments, it further includes a vibrator 8 which is arranged on the side wall of the rack box 9.

[0060] The vibrator 8 can make the surface of the stem piece pile in the rack box 9 tend to be horizontal and can also make the stem piece pile more compact.

[0061] Optionally, there are multiple vibrators 8 which are arranged at intervals on the four surrounding side walls of the rack box 9 to make the vibration effect on the stem piece pile better.

[0062] The utility model provides a stem piece detection head after tobacco cuttings winnowing, which automatically recovers the stem pieces at the discharge end of the lifting belt 10 through the rack box 9, realizes the automatic recovery of stem pieces, and can automatically measure the stem piece rejection amount through the laser distance sensor 1, saving labor costs and liberating the labor force.

[0063] On the other hand, the utility model provides a stem piece detection head after tobacco cuttings winnowing, which is used for real-time detecting the total weight of the rejected stem pieces and the stem piece silk content rate after tobacco cuttings winnowing. Based on the detected data, it can be transmitted to the winnowing system to adjust relevant parameters in real time, forming an automatic closed-loop control for winnowing stem piece rejection.

[0064] Specifically:

[0065] When the lower baffle 7 is horizontal, that is, when it is closed with the outlet of the frame box 9, the frame box 9 and the lower baffle 7 form an upper-opening container with a certain cross-sectional area. The threshed stem pieces are continuously brought into the frame box 9 by the lifting belt 10. Since the lower baffle 7 is horizontal at this time, the stem pieces are blocked by the lower baffle 7 and cannot freely fall into the collection bag. The stem pieces then accumulate in the space formed by the frame box 9 and the lower baffle 7. After a fixed period of time, the lifting belt 10 stops running, and the vibrators 8 installed around the frame box 9 and on the lower baffle 7 start running. Five laser distance sensors 1 installed on the inner wall of the top of the frame box 9 start to detect the distance between them and the surface of the stem piece pile in the temporarily sealed container formed by the lower baffle 7 and the frame box 9 until the upper part of the stem piece pile is shaken flat, and the difference in the values collected at the five points is within the required small range, and the average value d is taken. At the same time, a piezoresistor is installed at the connection between the lower baffle 7 and the connecting rod 5 to measure the weight m of the stem piece pile at this time. The outlet area at the bottom of the frame box 9 is fixed and known as S, and the distance between the laser distance sensor 1 installed on the upper part of the frame box 9 and the horizontal lower baffle 7 is also fixed and known as D. After collecting the data, the lower baffle 7 is driven by the cylinder 4 to be perpendicular to the ground, and the originally accumulated stem piece pile will fall into the collection bag under the action of gravity. Then the cylinder 4 drives the lower baffle 7 back to the horizontal position to repeat the previous cycle. Two magnetic switches are installed on the cylinder 4 to control the telescopic amount of the cylinder 4 to ensure that the lower baffle 7 operates in place.

[0066] Based on the above known parameters, it can be calculated that:

[0067] During a specified operating time of the winnowing equipment, the weight m of the threshed stem pieces is used to feed back to the winnowing system to adjust parameters. For example, the opening angle of the air door. When m is less than the average value within the specified time for removing stem pieces required for each batch, the opening of the air door is appropriately reduced to let more stem pieces fall and remove more stem pieces. On the contrary, the opening of the air door is appropriately increased. From the start to the end of the production of the current batch of cut tobacco, the total weight M of the threshed stem pieces after winnowing of this batch of cut tobacco can be obtained by cumulative addition. By comparing it with the weight of the stem pieces to be removed for each batch required by this brand, it can be judged whether the amount of stem pieces removed is qualified, and the appropriate range of each parameter adjustment during the winnowing of the next batch of cut tobacco of the same brand can be guided. After multiple optimizations, the control of the winnowing equipment can be made more reasonable and the removal of stem pieces can be more accurate.

[0068] During a specified operating time of the winnowing equipment, based on the above collected data, through the following formula:

[0069]

[0070] It can be known that the density ρ of the stem pieces removed from the cut tobacco by air separation during this fixed period of time, and thus the cut tobacco content rate can be obtained. Similarly, it can be fed back to the air separation system to adjust the corresponding parameters. (During air separation, when in normal production, the composition of the cut tobacco of the same brand is fixed, and the moisture content of the cut tobacco also fluctuates within the required range. It can be considered that the density of the stem pieces with a cut tobacco content rate within the required range of the standard value after air separation has a fixed range, and the cut tobacco content rate of the stem pieces is inversely proportional to the density of the stem pieces. Through multiple sampling and comparison, the corresponding relationship between the density of the stem pieces and the cut tobacco content rate of the stem pieces can be obtained, so that the density of the stem pieces obtained by collection and calculation can be corresponded to the cut tobacco content rate of the stem pieces).

[0071] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can 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 detection head for stem pieces after screening tobacco shreds by air separation, characterized in that, Comprising: A lifting belt for conveying the stems after the tobacco cuttings are separated by air selection; A frame box, with an outlet opened at the bottom of the frame box, and an inlet opened above the side wall of the frame box. The discharging end of the lifting belt is communicated with the inlet; A lower baffle, which is arranged on the outlet in an openable and closable manner; A laser distance sensor, arranged on the inner wall of the top of the frame box, for detecting the distance from the surface of the stem pile in the frame box to the inner wall of the top of the frame box.

2. The stem detection head after the tobacco cut filler is wind - selected according to claim 1, characterized in that, Also comprising: A first bracket, arranged on the side wall of the frame box; A cylinder, connected with the first bracket, and the telescopic end of the cylinder is hinged to the first end of a connecting rod; A second bracket, arranged on the side wall of the frame box. The middle part of the connecting rod is rotatably connected with the second bracket, and the second end of the connecting rod is hinged to the lower baffle.

3. The stem detection head after the air separation of cut tobacco according to claim 2, characterized in that, Two magnetic switches are arranged on the cylinder for controlling the telescopic amount of the cylinder.

4. The stem detection head after the tobacco cut filler is air-selected according to claim 2, characterized in that, Also comprising a pressure-sensitive sensor, which is arranged at the connection part of the lower baffle and the connecting rod.

5. The stem picking detection head after air separation of cut tobacco according to claim 4, characterized in that, The pressure-sensitive sensor is a pressure-sensitive resistor.

6. The cut stem detection head after the cut tobacco winnowing according to claim 1, characterized in that, There are 5 laser distance sensors, 1 is arranged at the central position of the inner wall of the top of the frame box, and the other 4 are respectively arranged at the four corner positions of the inner wall of the top of the frame box.

7. The stem pick detection head after the cut tobacco winnowing according to claim 1, characterized in that, Also comprising a vibrator, arranged on the side wall of the frame box.

8. The stem detection head after the tobacco cut filler is air-selected according to claim 7, characterized in that, There are multiple vibrators, which are arranged at intervals on the peripheral side walls of the frame box.

9. The stem detection head after the air separation of cut tobacco according to claim 1, wherein, An observation port is also opened on the side wall of the frame box, and a draw plate that can be opened and closed is arranged on the observation port.

10. The stem detection head after pneumatic separation of cut tobacco according to claim 1, characterized in that, Also comprising a collection bag, which is arranged below the outlet.

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