A method and device for improving the looseness rate of cigarette blocks

Abstract

The present invention relates to a method and a device for improving the loosening rate of a tobacco block. The specification of the tobacco block is 1136×720×725 mm. The method comprises the following steps: S1, unpacking tobacco leaves; S2, detecting tobacco leaf density; S3, classifying tobacco leaves; S4, slicing tobacco leaves; S5, loosening and moistening tobacco leaves; in the step S5, the rotating speed of the loosening and moistening drum of the tobacco leaf block of type A is 10 rpm, and the compensating steam volume is 200 kg / h-250 kg / h; the tobacco leaf block of type B is loosened and moistened The rotation speed of the rehumidification drum is 11 rpm, and the compensation steam volume is 250kg / h-300kg / h; for the C-type tobacco leaf blocks, the loosening rehumidification drum rotation speed is 12 rpm, and the compensation steam volume is 300kg / h-350kg / h; the beneficial effect of the present invention is that by setting the rotation speed of the drum and the compensation steam volume according to the density of the tobacco leaves, it is avoided that the drum speed and the compensation steam volume remain unchanged, resulting in low-density tobacco leaves having too high moisture content, and high-density tobacco leaves having low looseness rate and many broken leaves.

Description

Technical Field

[0001] The invention relates to the technical field of water collection, in particular to a method and a device for improving the loosening rate of a cigarette block. Background Art

[0002] The main process task of the loosening and rehumidification process is to increase the moisture content and temperature of the tobacco slices, improve the processing resistance of the tobacco slices, and loosen the tobacco slices. The main equipment consists of a box opener, a slicer, an electronic belt scale, a loosening and rehumidification machine and a conveyor belt. The process flow is that after the tobacco box is unloaded from the high-bay warehouse according to the recipe order, it is unpacked and sliced, and then passes through the electronic belt scale and enters the loosening and rehumidification equipment at a constant flow rate. The standard tobacco box is 200kg / box, with a size of 1136×720×725mm. Due to differences in the variety, region, grade, year, moisture, etc. of the tobacco leaves in the box, the tobacco leaves are often aged for more than two years, and the density of different tobacco leaves is different. For tobacco blocks with low density, it is easy to loosen after the loosening and rehumidification process, while tobacco blocks with high density cannot be fully loosened. There are more unloosened tobacco blocks at the outlet of the loosening and rehumidification equipment, and the loosening rate is about 98%, which cannot meet the process requirements of ≥99%. If it flows into the next process, there are quality risks.

[0003] Among the existing patents, the closest prior art is the patent with the authorization number CN201910721790.5, entitled A device for increasing the looseness rate of tobacco blocks. The patent discloses a frame fixed on both sides of an electronic belt scale, wherein the frame is provided with a loosening roller and a driving motor for driving the loosening roller near the outlet of the electronic belt scale, and the distance between the loosening roller and the active roller at the outlet of the electronic belt scale is 1-3 cm; the surface of the loosening roller is evenly provided with a number of circumferentially arranged adjustable loosening roller needles at intervals of 15-20 cm along the axial direction; the frame is provided with an anti-dumping door plate above the active roller at the outlet of the electronic belt scale, and the anti-dumping door plate is movably connected to the bearing provided on the frame through a connecting rod fixed at its upper end, and the connecting rod is fixed to an adjusting rod with a counterweight on the outside of the frame. This patent adopts a roller needle structure, which is easy to damage tobacco leaves;

[0004] There is also a patent application number CN200920089177.8, named "Tobacco Loose Rate Determination System", which discloses a feeding metering device, an air separation device, a collecting device, an air-material separation device and a gas processing device. The discharge end of the feeding metering device is provided with an air separation device, the lower end of the air separation device is provided with a collecting device, the other end of the air separation device is connected to the air-material separation device, the lower part of the air-material separation device is provided with a tobacco collecting bin, the air separation device includes a feeding slide and an air separation mechanism, the feeding slide has a certain length and inclination, and a transition arc is provided at the lower part to change the movement direction of the tobacco sample; the feeding metering device includes a quantitative feeding device and a metering conveyor belt, the inside of the metering conveyor belt is provided with a weighing mechanism, and the lower side of the discharge end of the metering conveyor belt is provided with a feeding slide. This patent is about how to measure the loose rate, and cannot change the loose rate. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a method and a device for improving the loosening rate of tobacco blocks, which is conducive to the collection and return of overflowing steam condensate and improves the loosening efficiency.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A method for improving the looseness rate of a tobacco block, wherein the specification of the tobacco block is 1136×720×725 mm; comprising the following steps:

[0008] S1, unpacking tobacco leaves, taking out the whole tobacco leaves from the packaging box and placing them on the conveyor belt;

[0009] S2, tobacco leaf density detection; the whole tobacco leaf of step S1 is conveyed to the bottom of the tobacco leaf detection device through a conveyor belt, and the tobacco leaf detection device detects the density of the whole tobacco leaf;

[0010] S3, tobacco leaf classification; the density standards of tobacco leaves are divided into three categories: a, b, and c; according to the density of the tobacco leaf detected in step S2, the whole tobacco leaf is stored according to the standard classification;

[0011] S4, slicing tobacco leaves; slicing the tobacco leaves classified in step S3 into three categories: a, b, and c on a slicer;

[0012] S5, loosening and moistening the tobacco leaves; loosening and moistening the tobacco leaves cut into slices in step S4.

[0013] Furthermore, the tobacco leaf detection device in step S2 uses an ionizing radiation tobacco leaf density detector to perform density detection.

[0014] Furthermore, the density standard a of step S3 is 200 kg / m 3 ≤a≤300kg / m3 ; The density standard b is 300kg / m 3 <b≤400kg / m 3 ; The density standard c is 400kg / m 3 <a≤500kg / m 3 .

[0015] Furthermore, in step S4, the tobacco leaf block of type A is divided into four pieces of equal length in the length direction by a slicer; and the tobacco leaf block of type B and the tobacco leaf block of type C are divided into five pieces of equal length in the length direction by a slicer.

[0016] Furthermore, in step S5,

[0017] The tobacco leaves are loosened and moistened by a tobacco leaf loosening and moistening machine; the tobacco leaf loosening and moistening machine includes a loosening and moistening roller for loosening the tobacco leaves, a steam nozzle for humidifying the tobacco leaves, and a steam source;

[0018] For the tobacco leaves of type A, the loosening and rehumidification drum has a speed of 10 rpm and a compensating steam volume of 200kg / h-250kg / h;

[0019] For b-type tobacco leaf blocks, the loosening and rehumidification drum speed is 11 rpm, and the compensation steam volume is 250kg / h-300kg / h;

[0020] For the tobacco leaves of type C, the loosening and rehumidification drum has a rotation speed of 12 rpm and a compensating steam volume of 300kg / h-350kg / h.

[0021] A tobacco leaf block slicer comprises a frame, a cutter arranged on the frame, a guide plate arranged on the frame for causing the sliced ​​tobacco leaves to fall from the slicer onto a conveyor belt, and a vibrating device for loosening the tobacco leaves.

[0022] Furthermore, one end of the guide plate is hinged to the frame; the other end of the guide plate is overlapped with the bracket; and the bracket is fixedly connected to the frame.

[0023] Furthermore, the vibration device includes a camshaft rotatably connected to the frame; when the camshaft rotates, the top end of the cam abuts against the bottom surface of the guide plate.

[0024] A tobacco leaf loosening and rehumidifying drum, comprising a drum for loosening tobacco leaves, rake nails for loosening tobacco leaves and nozzles for rehumidifying tobacco leaves, wherein the rake nails are arranged in a spiral line on the inner wall of the drum; and also comprising a tobacco leaf auxiliary humidifying device;

[0025] Furthermore, the tobacco leaf auxiliary humidification device comprises a humidification sleeve rotatably connected to the outer circle of the drum and a sealing ring arranged between the humidification sleeve and the drum; the humidification sleeve is provided with an annular groove; a plurality of air jet holes are evenly distributed on the side wall of the drum in a circumferential direction; the air jet holes are connected to the annular groove; the air jet holes are located between adjacent rake nails;

[0026] The humidifying sleeve is provided with an air inlet hole communicating with the annular groove; the air inlet hole is communicated with a steam source;

[0027] There are two sealing rings, which are respectively arranged on both sides of the annular groove.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Through the tobacco leaf density detection device set up, the density of the whole tobacco leaf is detected;

[0030] S3, tobacco leaf classification; the density standards of tobacco leaves are divided into three categories: a, b, and c; according to the density of the tobacco leaf detected in step S2, the whole tobacco leaf is stored according to the standard classification;

[0031] S4, slicing tobacco leaves; slicing the tobacco leaves classified in step S3 into three categories: a, b, and c on a slicer;

[0032] Tobacco leaves of each density are cut into blocks separately, and the loosening and rehumidification speed and steam flow rate are set separately, avoiding the need to adjust the drum speed and steam flow rate at any time, making the loosening of tobacco blocks of each density more accurate, avoiding leaf breakage, and improving the product qualification rate;

[0033] 2. The beating device of the slicer guide plate is set to further loosen the tobacco blocks, reduce the working pressure of the drum, and make the tobacco blocks looser;

[0034] 3. The roller-assisted humidifying device can be used to humidify the other side of the tobacco leaves, which improves the humidification efficiency and avoids uneven humidification and waste of broken leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a tobacco block slicer;

[0036] Figure 2 for Figure 1 Enlarged view of point C;

[0037] Figure 3 It is a structural schematic diagram of the guide plate of Example 3;

[0038] Figure 4 This is a schematic diagram of the structure of a tobacco leaf auxiliary humidification device;

[0039] Figure 5 for Figure 4 Cross-sectional view at AA;

[0040] Figure 6 for Figure 4 Enlarged view of point B.

[0041] Description of the numbers in the figure:

[0042] 1-cutter, 2-frame, 3-camshaft, 4-guide plate, 41-beating part, 5-bracket, 6-conveyor belt, 7-nozzle, 8-roller, 9-raking nail, 10-humidifying sleeve, 11-jet hole, 12-ring groove, 13-air inlet, 14-sealing ring. DETAILED DESCRIPTION

[0043] First, it should be noted that the discussion of any embodiment of the present invention is only exemplary and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; there are many other variations of the different aspects of the present invention described above, which are not provided in detail for the sake of brevity. Therefore, other embodiments are also within the scope of protection of the corresponding claims.

[0044] It should also be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. If not otherwise stated, the above words have no special meanings, especially there are no specific meanings of "primary" or "secondary" or arrangement order, and therefore cannot be understood as limiting the scope of protection of this application.

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0046] Example 1

[0047] A method for improving the looseness rate of a tobacco block, wherein the specification of the tobacco block is 1136×720×725 mm; comprising the following steps:

[0048] S1, unpacking tobacco leaves, taking out the whole tobacco leaves from the packaging box and placing them on the conveyor belt;

[0049] S2, tobacco leaf density detection; the whole tobacco leaf of step S1 is conveyed to the bottom of the tobacco leaf detection device through a conveyor belt, and the tobacco leaf detection device detects the density of the whole tobacco leaf;

[0050] The tobacco block density detection device adopts an ionizing radiation tobacco leaf density detector to detect the density of tobacco leaves in each tobacco box.

[0051] The density detector strictly follows the provisions of the industry standard "Non-destructive Testing of Density Deviation Rate of Tobacco and Tobacco Products Boxes by Ionizing Radiation Method" (YC / T236-2008) to perform density testing. The density detector can display the density value, average value, mean square error of the nine test points of the tested tobacco box in real time, display data related to the production process, and transmit the test results to the designated host computer or data management system through the network according to the needs of the enterprise; the density detector is tailored according to the production rhythm of the enterprise when loosening tobacco blocks, and meets the current online testing needs of the 3000-8000 kg / hour production line.

[0052] The appearance of the density detector is similar to the baggage security inspection machine in public places such as airports and stations. The principle is to use the penetration of X-rays to detect sealed objects. The energy of the ray is related to the voltage and current. The X-ray device used in the density detector is a Class III ray device with low ray energy, which is only about 1 / 3 of the ray energy of the security inspection machine. At the same time, the ray protection is fully considered when designing the instrument to ensure safe use.

[0053] According to the detected density, since the last tobacco leaf block takes a relatively long time to pass through the roller during the loosening and rehumidification process, each formula tobacco leaf is set into three formula modules and shipped out in the order of low, medium and high. The low-level density is produced first and the high-level density is produced last. At the same time, according to the detected material density during the production process, automatic adjustments are made and the order of shipping out of the formula module is optimized. Finally, the density detector control system transmits the data information to the slicer and loosening and rehumidification machine control system.

[0054] S3, tobacco leaf classification; the density standards of tobacco leaves are divided into three categories: a, b, and c; according to the density of the tobacco leaf detected in step S2, the whole tobacco leaf is stored according to the standard classification;

[0055] The density standard a of step S3 is 200 kg / m 3 ≤a≤300kg / m 3 ; The density standard b is 300kg / m 3 <b≤400kg / m 3 ; The density standard c is 400kg / m 3 <a≤500kg / m 3 .

[0056] According to the measured density of tobacco leaves in the box, the density of cigarette packages is divided into three levels: low (a), medium (b), and high (c). The low-level density is 200kg / m3-300kg / m3, the medium-level density is 301kg / m3-400kg / m3, and the high-level density is 401kg / m3-500kg / m3.

[0057] S4, slicing tobacco leaves; slicing the tobacco leaves classified in step S3 into three categories: a, b, and c on a slicer;

[0058] In step S4, the tobacco leaf block of type A is divided into four pieces of equal length in the length direction by a slicer; and the tobacco leaf block of type B and the tobacco leaf block of type C are divided into five pieces of equal length in the length direction by a slicer.

[0059] Cutting less slices of low-density material can meet the loose requirements later and save energy.

[0060] High-density multi-slices are used to ensure that the high-density tobacco blocks can be loose.

[0061] S5, loosening and moistening the tobacco leaves; loosening and moistening the tobacco leaves cut into slices in step S4.

[0062] In the step S5,

[0063] The tobacco leaves are loosened and moistened by a tobacco leaf loosening and moistening machine; the tobacco leaf loosening and moistening machine includes a loosening and moistening roller for loosening the tobacco leaves, a steam nozzle for humidifying the tobacco leaves, and a steam source;

[0064] For the tobacco leaves of type A, the loosening and rehumidification drum has a speed of 10 rpm and a compensating steam volume of 200kg / h-250kg / h;

[0065] For b-type tobacco leaf blocks, the loosening and rehumidification drum speed is 11 rpm, and the compensation steam volume is 250kg / h-300kg / h;

[0066] For the tobacco leaves of type C, the loosening and rehumidification drum has a rotation speed of 12 rpm and a compensating steam volume of 300kg / h-350kg / h.

[0067] The working process of the present invention;

[0068] First, unpack the tobacco blocks, take out the tobacco blocks, test their density, and then classify and store them according to the density standards;

[0069] This process is generally a continuous production line. When slicing, the low-density (a) tobacco block is sliced ​​first, and the number of slices is set on the slicer. Three knives and four slices are used for uniform slicing. Then the low-density (a) tobacco block is transported to the drum with a conveyor belt for loosening and rehydration. The loosened and rehydrated low-density (a) tobacco block is loosened and rehydrated in the drum according to the set speed and steam volume;

[0070] After the low-density tobacco leaf blocks are sliced, loosened and moistened, the medium-density tobacco leaf blocks are continued, and finally the high-density tobacco leaf blocks.

[0071] Example 2

[0072] The structure of this embodiment is basically the same as that of embodiment 1.

[0073] The difference is that

[0074] like Figure 1-2 As shown,

[0075] A tobacco leaf block slicer comprises a frame 2, a cutter 1 arranged on the frame 2, a guide plate 4 arranged on the frame 2 for allowing the sliced ​​tobacco leaves to fall from the slicer onto a conveyor belt 6, and a vibration device for loosening the tobacco leaves.

[0076] One end of the guide plate 4 is hinged to the frame 2 ; the other end of the guide plate 4 is overlapped with the bracket 5 ; the bracket 5 is fixedly connected to the frame 2 .

[0077] The vibration device includes a camshaft 3 rotatably connected to the frame 2; when the camshaft 3 rotates, the top of the cam abuts against the bottom surface of the guide plate 1. The camshaft 3 is driven by a motor and strikes the guide plate 4 once per rotation, so that the tobacco leaves on the guide plate 4 become loose.

[0078] A relatively thick steel plate may be provided at the place where the guide plate 4 contacts the camshaft 3 to prevent the camshaft 3 from being frequently struck and causing damage to the entire guide plate 4 .

[0079] After the tobacco leaves are sliced, they fall onto the conveyor belt 6 through the inclined guide plate 4 and are transported to the drum for humidification and loosening. After the beating device is designed on the guide plate 4, the loosening effect is good. After repeated tests and comparisons, after the beating device is installed, the loosening yield rate is increased from the original 98% to 99%. The output of each batch is 8,000 kilograms, and 80 kilograms of tobacco leaves can be saved in each batch, with significant economic benefits.

[0080] Example 3

[0081] The difference between this embodiment and embodiment 2 is that:

[0082] like Figure 3 As shown,

[0083] The guide plate 4 is arranged in an arc shape, and a striking portion 41 is arranged on the back of the guide plate 4 to increase the strength;

[0084] The arc-shaped guide plate 4 can increase the length of the tobacco leaves passing through, and when the vibration device vibrates, the tobacco leaves will vibrate more times, which is more conducive to loosening the tobacco leaves;

[0085] The knocking portion 41 is provided to prevent the cam 3 from wearing the guide plate 4 for a long time, thereby preventing the guide plate 4 from deforming.

[0086] This embodiment is basically the same in structure as Embodiment 2, and has the same working principle, so it will not be described in detail.

[0087] Example 4

[0088] The difference between this embodiment and embodiment 1 is that:

[0089] like Figure 3-5 As shown,

[0090] A tobacco leaf block loosening and rehumidifying drum comprises a drum 8 for loosening tobacco leaves, rake nails 9 for loosening tobacco leaves and a nozzle 7 for rehumidifying tobacco leaves, wherein the rake nails 9 are arranged in a spiral line on the inner wall of the drum 8; when the drum rotates, the tobacco leaf blocks are gradually loosened along the spirally arranged rake nails 9 under the tearing of the nails and the centrifugal force of the drum 8, and steam is added while loosening, so that the tobacco leaves contain moisture and will not be broken;

[0091] However, it was found during use that there were still too many broken leaves and the process loss was too large. The reason was that the steam was not added evenly during the loosening process, causing the particularly dry tobacco leaves to break into slag, resulting in waste products that needed to be solved.

[0092] Currently, a nozzle is provided at the tobacco leaf inlet of the drum to spray steam, so that the surface of the tobacco leaf block can be humidified, while the other side is relatively dry. How to improve the humidification device and humidify evenly is a problem to be solved.

[0093] Therefore, a tobacco leaf auxiliary humidification device is designed; it can humidify the contact surface between the tobacco leaves and the roller, making the tobacco leaves humidified more evenly and reducing broken leaves.

[0094] The specific plan is as follows:

[0095] The tobacco leaf auxiliary humidification device comprises a humidification sleeve 10 connected to the outer circle of the drum 8 and a sealing ring 14 arranged between the humidification sleeve 10 and the drum 8; the humidification sleeve 10 is provided with an annular groove 12; a plurality of air jet holes 11 are evenly distributed on the side wall of the drum 8 in a circumferential direction; the air jet holes 11 are connected with the annular groove 12; the air jet holes 11 are located between adjacent rake nails 9;

[0096] The humidifying sleeve 10 is provided with an air inlet 13 communicating with the annular groove 12; the air inlet 13 is communicated with a steam source;

[0097] There are two sealing rings 14, which are respectively arranged on both sides of the annular groove 12 to prevent air leakage through the gap.

[0098] During the working process, the steam passes through the air inlet 13, flows into the annular groove 12, and then flows into the interior of the drum 8 through the air jet hole 11, so as to fully humidify the tobacco leaves. The drum 8 humidifies while rotating. Compared with humidification at a fixed point, the tobacco leaves can be fully humidified without breaking the leaves.

[0099] At present, the technical solution of the present application has adopted the best implementation mode of Example 1, and has been pilot-tested, that is, a small-scale experiment of the product before large-scale mass production; after the pilot-test was completed, a user usage survey was conducted in a small range, and the survey results showed that user satisfaction was high; now preparations have been made for the formal production and industrialization of the product; the above is only a preferred specific implementation mode of the present invention; but the protection scope of the present invention is not limited to this; any technician familiar with the technical field within the technical scope disclosed by the present invention; according to the technical solution and its improved conception of the present invention, make equivalent replacement or change; all should be covered within the protection scope of the present invention.

[0100] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A method for increasing the looseness of a tobacco block, wherein the specification of the tobacco block is 1136×720×725 mm; characterized in that: The following steps are included: S1, unpacking tobacco leaves, taking out the whole tobacco leaves from the packaging box and placing them on the conveyor belt; S2, tobacco leaf density detection; the whole tobacco leaf of step S1 is conveyed to the bottom of the tobacco leaf detection device through a conveyor belt, and the tobacco leaf detection device detects the density of the whole tobacco leaf; S3, tobacco leaf classification; the density standards of tobacco leaves are divided into three categories: a, b, and c; according to the density of the tobacco leaf detected in step S2, the whole tobacco leaf is stored according to the standard classification; S4, slicing tobacco leaves; slicing the tobacco leaves classified in step S3 into three categories: a, b, and c on a slicer; S5, loosening and moistening the tobacco leaves; loosening and moistening the tobacco leaves cut in step S4; The tobacco leaf detection device in step S2 uses an ionizing radiation tobacco leaf density detector to perform density detection; The density standard a of step S3 is 200 kg / m 3 ≤a≤300kg / m 3 ; The density standard b is 300kg / m 3 <b≤400kg / m 3 ; The density standard c is 400kg / m 3 <a≤500kg / m 3 ; In step S4, the tobacco leaf block of type A is divided into four pieces of equal length in the length direction by a slicer; the tobacco leaf block of type B and the tobacco leaf block of type C are divided into five pieces of equal length in the length direction by a slicer; In the step S5, The tobacco leaves are loosened and moistened by a tobacco leaf loosening and moistening machine; the tobacco leaf loosening and moistening machine includes a loosening and moistening roller for loosening the tobacco leaves, a steam nozzle for humidifying the tobacco leaves, and a steam source; For the tobacco leaves of type A, the loosening and rehumidification drum has a speed of 10 rpm and a compensating steam volume of 200kg / h-250kg / h; For b-type tobacco leaf blocks, the loosening and rehumidification drum speed is 11 rpm, and the compensation steam volume is 250kg / h-300kg / h; For the tobacco leaves of type C, the loosening and rehumidification drum has a rotation speed of 12 rpm and a compensating steam volume of 300kg / h-350kg / h.

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