Small-flow material blending device

Abstract

The utility model discloses a small-flow material blending device, which relates to the technical field of tobacco processing and comprises a quantitative tube, a belt conveying mechanism is arranged on the quantitative tube, materials are conveyed to the quantitative tube through the belt conveying mechanism, an electronic belt scale mechanism is arranged below the quantitative tube, and the materials in the quantitative tube fall onto the electronic belt scale mechanism. A vibration groove body is arranged below the discharging end of the electronic belt scale mechanism, weighed materials are conveyed into the vibration groove body, the materials are evenly laid on a to-be-blended backing material through vibration of the vibration groove body, a material position detection mechanism is arranged on the quantitative pipe, the material condition in the quantitative pipe can be detected in real time, and the quantitative pipe is provided with a material position detection mechanism. And the conveying rate of the conveying mechanism is regulated and controlled through the control center, so that the problem of non-uniform mixing is avoided, and the mixing uniformity and stability are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco processing technology, and specifically relates to a low-flow-rate material blending device. Background Technology

[0002] Stems, expanded tobacco, and recycled tobacco are commonly used blending materials in the cigarette manufacturing process. Stems and expanded tobacco have good filling properties; blending a small amount of stems and expanded tobacco into high-end cigarettes can improve the aroma penetration, reduce irritation, and improve the aftertaste. Recycled tobacco is the shredded tobacco used to roll substandard cigarettes; blending it into tobacco of the same brand can significantly reduce tobacco costs. Therefore, blending a small amount of stems, expanded tobacco, and recycled tobacco into high-end cigarettes plays a positive role in reducing tar and harmful substances, reducing costs and increasing efficiency, and improving quality.

[0003] The blending process is a special step in the cigarette manufacturing process, and the uniformity of blending has a significant impact on the sensory quality of cigarettes. When blending at low flow rates, achieving the required uniformity is often difficult. When the blending volume is too large, the metering tube is prone to blockage, leading to a reduced flow rate and ultimately affecting blending accuracy. Furthermore, the electronic belt scale for blending operates very slowly, causing the blended material to fall discontinuously and linearly onto the main material, resulting in uneven mixing between the blended material and the main material, thus impacting the product's intrinsic quality. Utility Model Content

[0004] The purpose of this invention is to provide a low-flow-rate material blending device. This device controls the transmission speed of the material conveying mechanism (belt conveyor) by detecting the material condition in the metering tube, ensuring that the material is uniformly blended into the blades without causing blockage. The specific technical solution is as follows:

[0005] A low-flow-rate material blending device includes a metering tube, a belt conveyor mechanism on the metering tube, an electronic belt scale mechanism below the metering tube, a vibrating trough below the discharge end of the electronic belt scale mechanism, a discharge height adjustment mechanism and a metering tube volume adjustment mechanism on the metering tube, and a detection mechanism installed on the metering tube, with the sensing end of the detection mechanism facing the inside of the metering tube.

[0006] It also includes a control center. The belt conveyor, electronic belt scale, and detection mechanism are all electrically connected to the control center. The detection mechanism feeds back the material height signal in the quantitative tube to the control center, which then controls the conveying speed of the belt conveyor.

[0007] Preferably, the quantitative tube includes an installation body and a feed hopper, the feed hopper is installed above the installation body and communicates with the installation body, and the installation body is mounted above the electronic belt scale mechanism.

[0008] Preferably, the detection mechanism includes a medium-level through-beam photoelectric switch and a low-level through-beam photoelectric switch installed on the mounting body. The low-level through-beam photoelectric switch is located at a position no more than 20cm away from the discharge port of the mounting body, and the medium-level through-beam photoelectric switch is located above the low-level through-beam photoelectric switch, with a distance of no more than 20cm between them.

[0009] Both the medium-level through-beam photoelectric switch and the low-level through-beam photoelectric switch are electrically connected to the control center.

[0010] Preferably, a slide rail is provided on the side of the mounting body facing the conveying direction of the electronic belt scale mechanism. The discharge height adjustment mechanism includes an adjustment plate, a guide roller, a slider, and a telescopic cylinder. The telescopic cylinder is mounted on the mounting body. The adjustment plate is slidably mounted on the slide rail via the slider. The output end of the telescopic cylinder is connected to the adjustment plate. The guide roller is rotatably mounted at the lower end of the adjustment plate. The guide roller is an electric roller. Both the guide roller and the telescopic cylinder are electrically connected to the control center.

[0011] Preferably, the quantitative tube volume adjustment mechanism includes a rear baffle, a mounting bracket, an adjusting bolt, and an adjusting nut. The rear baffle is rotatably mounted on the mounting body and is disposed opposite to the adjusting plate. The mounting bracket is mounted on the mounting body and has a mounting hole. The adjusting bolt passes through the mounting hole and abuts against the surface of the rear baffle. The adjusting nut and the adjusting bolt are threaded together.

[0012] Preferably, the angle between the rear baffle and the electronic belt scale mechanism is adjustable between 90° and 120° through the top connection of the adjusting bolt.

[0013] Preferably, the vibrating trough is connected to the discharge end of the electronic belt scale mechanism, and the discharge port of the vibrating trough is set at an angle.

[0014] Compared with existing technologies, this utility model has the following beneficial effects:

[0015] This invention provides a low-flow-rate material blending device, which can be used to blend small proportions (1.5% to 5%) of tobacco stems, expanded tobacco, and recycled tobacco. The blending process is continuous, uniform, and stable, which can better ensure the uniformity and stability of the blending. At the same time, the transmission speed of the upper and lower material conveying mechanisms is controlled by detecting the material in the quantitative tube, ensuring that the material can be uniformly blended into the tobacco leaves without causing material blockage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a first-view structural schematic diagram of the quantitative tube of this utility model.

[0019] Figure 3 This is a schematic diagram of the quantitative tube structure from a second perspective of this utility model.

[0020] Figure 4 This is a top view of the vibration trough structure of this utility model.

[0021] Explanation of key figure labels:

[0022] 100-Quantitative tube, 110-Discharge height adjustment mechanism, 111-Adjusting plate, 112-Guide roller, 113-Slider, 114-Telescopic cylinder, 120-Quantitative tube volume adjustment mechanism, 121-Rear baffle, 122-Mounting bracket, 123-Adjusting bolt, 124-Adjusting nut, 130-Mounting body, 131-Slide rail, 140-Feed hopper, 200-Belt conveyor mechanism, 300-Electronic belt scale mechanism, 400-Vibrating trough, 500-Detection mechanism, 510-Middle level through-beam photoelectric switch, 520-Low level through-beam photoelectric switch. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0027] Example

[0028] like Figures 1 to 4As shown, a small-flow material blending device specifically includes a metering tube 100, on which a belt conveyor mechanism 200 is installed for material conveying. An electronic belt scale mechanism 300 is installed below the metering tube 100, onto which the material falls. A vibrating trough 400 is installed below the discharge end of the electronic belt scale mechanism 300, into which the weighed material is conveyed. The vibration of the vibrating trough 400 evenly spreads the material onto the substrate to be blended. The addition of the vibrating trough 400 transforms the traditional linear material spreading into surface spreading, improving the uniformity of blending. The metering tube 100 is equipped with a discharge height adjustment mechanism 110. The quantitative tube 100 is equipped with a volume adjustment mechanism 120 and a detection mechanism 500. The sensing end of the detection mechanism 500 faces the inside of the quantitative tube 100. It is worth mentioning that the discharge height adjustment mechanism 110 controls the height of the material conveyed from the quantitative tube 100, and the volume adjustment mechanism 120 controls the amount of material received in the quantitative tube 100. The cooperation of the two prevents the material from clogging in the quantitative tube 100 during the material conveying process. It is also worth mentioning that the vibrating trough 400 is connected to the discharge end of the electronic belt scale mechanism 300, and the discharge port of the vibrating trough 400 is set with a slope. The slope is designed to better spread the material. At the same time, in order to enhance the uniformity, the conveying bottom surface of the vibrating trough 400 can be a corrugated plate.

[0029] Preferably, it also includes a control center. The belt conveyor 200, the electronic belt scale mechanism 300, and the detection mechanism 500 are all electrically connected to the control center. The detection mechanism 500 feeds back the material height signal located in the quantitative tube 100 to the control center, and the control center controls the conveying speed of the belt conveyor 200.

[0030] In some preferred embodiments, the quantitative tube 100 includes a mounting body 130 and a feed hopper 140. The feed hopper 140 is mounted above and communicates with the mounting body 130. The mounting body 130 is mounted above the electronic belt scale mechanism 300. It is worth mentioning that the end of the feed hopper 140 with a large opening faces upward, which is to facilitate receiving material from the belt conveyor mechanism 200.

[0031] In some preferred embodiments, the detection mechanism 500 includes a medium-level through-beam photoelectric switch 510 and a low-level through-beam photoelectric switch 520 mounted on the mounting body 130. The low-level through-beam photoelectric switch 520 is positioned at a distance of no more than 20 cm from the discharge port of the mounting body 130 and is located above the discharge port. The medium-level through-beam photoelectric switch 510 is positioned above the low-level through-beam photoelectric switch 520, and the distance between them is no more than 20 cm. The 0 is used to detect the material status at the middle position of the quantitative tube 100, and the low-level through-beam photoelectric switch 520 is used to detect the material status at the low position of the quantitative tube 100. The middle-level through-beam photoelectric switch 510 and the low-level through-beam photoelectric switch 520 are both electrically connected to the control center. When there is still material at the middle position of the quantitative tube 100, the control center controls the belt conveyor mechanism 200 to stop feeding after a delay (delay 1-3s); when there is no material at the low position, the control center controls the belt conveyor mechanism 200 to start feeding after a delay (delay 2-5s).

[0032] In some preferred embodiments, a slide rail 131 is provided on the side of the mounting body 130 facing the conveying direction of the electronic belt scale mechanism 300. The discharge height adjustment mechanism 110 includes an adjusting plate 111, a guide roller 112, a slider 113, and a telescopic cylinder 114. The telescopic cylinder 114 is mounted on the mounting body 130. The adjusting plate 111 is slidably mounted on the slide rail 131 via the slider 113. The output end of the telescopic cylinder 114 is connected to the adjusting plate 111. The guide roller 112 is rotatably mounted at the lower end of the adjusting plate 111. Notably, the guide roller 112 is an electric roller. Both the guide roller 112 and the telescopic cylinder 114 are electrically connected to the control center and controlled by the control center. 4. The adjusting plate 111 moves up and down. When the electronic belt scale mechanism 300 starts running, the guide roller 112 starts running synchronously. When the running speed of the electronic belt scale mechanism 300 is ≤1.0m / min, the discharge height adjusting mechanism 110 automatically drives the adjusting plate 111 to adjust downwards until the belt running speed of the electronic belt scale mechanism 300 is ≥1.2m / min. When the belt running speed of the electronic belt scale mechanism 300 is ≥90% of the maximum belt running speed of the electronic belt scale mechanism 300, the discharge height adjusting mechanism 110 automatically drives the adjusting plate 111 to adjust upwards until the belt running speed of the electronic belt scale mechanism 300 is ≤80% of the maximum belt running speed of the electronic belt scale mechanism 300.

[0033] In some preferred embodiments, the quantitative tube volume adjustment mechanism 120 includes a rear baffle 121, a mounting bracket 122, an adjusting bolt 123, and an adjusting nut 124. The rear baffle 121 is rotatably mounted on the mounting body 130, and the rear baffle 121 is opposite to the adjusting plate 111. The mounting bracket 122 is mounted on the mounting body 130 and has a mounting hole. The adjusting bolt 123 passes through the mounting hole and abuts against the surface of the rear baffle 121. The adjusting nut 124 and the adjusting bolt 123 are threadedly connected. Notably, through the abutment of the adjusting bolt 123, the angle between the rear baffle 121 and the electronic belt scale mechanism 300 is adjustable between 90° and 120°.

[0034] In summary, this utility model provides a small-flow material blending device that can be used to blend small proportions (1.5% to 5%) of tobacco stems, expanded tobacco, and recycled tobacco. The blending process is continuous, uniform, and stable, ensuring good uniformity and stability. At the same time, by detecting the material condition in the metering tube, the transmission speed of the upper and lower material conveying mechanisms is controlled to ensure that the material is evenly blended into the tobacco leaves without causing material blockage.

[0035] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A low-flow-rate material blending device, characterized in that, The device includes a quantitative tube (100), on which a belt conveyor mechanism (200) is provided, and below the quantitative tube (100) is an electronic belt scale mechanism (300). Below the discharge end of the electronic belt scale mechanism (300) is a vibrating trough (400). The quantitative tube (100) is provided with a discharge height adjustment mechanism (110) and a quantitative tube volume adjustment mechanism (120). A detection mechanism (500) is installed on the quantitative tube (100), with the sensing end of the detection mechanism (500) facing the inside of the quantitative tube (100). It also includes a control center. The belt conveyor (200), electronic belt scale (300) and detection mechanism (500) are all electrically connected to the control center. The detection mechanism (500) feeds back the material height signal in the quantitative tube (100) to the control center, and the control center controls the conveying speed of the belt conveyor (200).

2. The low-flow-rate material blending device according to claim 1, characterized in that, The quantitative tube (100) includes an installation body (130) and a feed hopper (140). The feed hopper (140) is installed above the installation body (130) and communicates with the installation body (130). The installation body (130) is mounted above the electronic belt scale mechanism (300).

3. The low-flow-rate material blending device according to claim 2, characterized in that, The detection mechanism (500) includes a medium-level through-beam photoelectric switch (510) and a low-level through-beam photoelectric switch (520) installed on the mounting body (130). The low-level through-beam photoelectric switch (520) is located at a position no more than 20cm away from the discharge port of the mounting body (130). The medium-level through-beam photoelectric switch (510) is located above the low-level through-beam photoelectric switch (520) and the distance between them is no more than 20cm. Both the medium-level through-beam photoelectric switch (510) and the low-level through-beam photoelectric switch (520) are electrically connected to the control center.

4. A low-flow-rate material blending device according to claim 2, characterized in that, The mounting body (130) is provided with a slide rail (131) on the side facing the conveying direction of the electronic belt scale mechanism (300). The discharge height adjustment mechanism (110) includes an adjustment plate (111), a guide roller (112), a slider (113), and a telescopic cylinder (114). The telescopic cylinder (114) is mounted on the mounting body (130). The adjustment plate (111) is slidably mounted on the slide rail (131) through the slider (113). The output end of the telescopic cylinder (114) is connected to the adjustment plate (111). The guide roller (112) is rotatably mounted at the lower end of the adjustment plate (111). The guide roller (112) is an electric roller. The guide roller (112) and the telescopic cylinder (114) are both electrically connected to the control center.

5. A low-flow-rate material blending device according to claim 4, characterized in that, The quantitative tube volume adjustment mechanism (120) includes a rear baffle (121), a mounting bracket (122), an adjusting bolt (123), and an adjusting nut (124). The rear baffle (121) is rotatably mounted on the mounting body (130), and the rear baffle (121) is opposite to the adjusting plate (111). The mounting bracket (122) is mounted on the mounting body (130), and the mounting bracket (122) is provided with a mounting hole. The adjusting bolt (123) passes through the mounting hole and abuts against the plate surface of the rear baffle (121). The adjusting nut (124) and the adjusting bolt (123) are threadedly connected.

6. A low-flow-rate material blending device according to claim 5, characterized in that, The angle between the rear baffle (121) and the electronic belt scale mechanism (300) is adjustable between 90° and 120° by means of the adjusting bolt (123).

7. A low-flow-rate material blending device according to claim 1, characterized in that, The vibrating trough (400) is connected to the discharge end of the electronic belt scale mechanism (300), and the discharge port of the vibrating trough (400) is set with an inclined surface.

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