A tobacco stem sealing conveying device

Abstract

The present invention discloses a closed tobacco stem conveying device, comprising: an integrated box; a three-way pipe fitting disposed in the integrated box; a flow diversion control mechanism disposed in the integrated box; a sampling box detachably mounted in the integrated box; a feed pipe, one end of which is connected to the feed port of the three-way pipe fitting; a negative pressure generator mounted in the feed pipe; a tobacco stem conveying mechanism, which is used to convey the tobacco stems separated by the stem separation mechanism into the feed pipe; and a PLC control system, which is respectively connected to the flow diversion control mechanism, the negative pressure generator and the tobacco stem conveying mechanism. The present invention uses a negative pressure duct method to convey tobacco stems, eliminates the vibration trough component, and improves the original open tobacco stem conveying method to a closed tobacco stem conveying method, thereby reducing equipment maintenance and downtime, reducing dust generation, and ensuring the cleanliness of the inside of the unit.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette production equipment, and in particular to a tobacco stem sealing and conveying device. Background Art

[0002] The Protos-M5 unit is the main equipment for the production of hard Zhonghua cigarettes at Shanghai Cigarette Factory and is also one of the most technologically advanced cigarette-making units in the world. The Protos-M5 unit adopts a large number of advanced technologies, among which the stem separation system is one of the new technologies it adopts. It moves the stem separation system forward, changing the original stem separation after the quantitative delivery of tobacco (needle roller) (first quantitative delivery and then stem separation) to the stem separation before the quantitative delivery of tobacco (first stem separation and then quantitative), avoiding the increase in tobacco distribution fluctuations in the tobacco flow caused by stem rejection caused by quantitative delivery first and then stem separation, which can greatly improve the uniformity of the tobacco flow entering the tobacco suction bin and reduce the weight deviation SD.

[0003] The separation of stems adopts a new type of "Z-shaped" channel. The airflow forms a vortex in the Z-shaped channel, which fully loosens the tobacco. The lighter tobacco fibers are transported to the top with the rising vortex, and the heavier stems fall downward due to gravity. Each Z-shaped channel is re-screened, and the stems and impurities are separated from the tobacco, resulting in a better separation effect. The amount of stem separation is achieved simply by changing the speed parameters of the screening fan through the VISU graphic operating system. The speed of the screening fan determines the amount of stems separated by the screening machine. The higher the speed of the screening fan, the higher the air speed in the screening machine, so fewer stems are separated. The lower the speed of the screening fan, the lower the air speed in the screening machine, so more stems are separated. The adjustment is convenient and quick, and the separation effect is good.

[0004] The tobacco stems separated from the "Z-shaped" channel fall down to the spiral conveying rod of the tobacco stem conveying mechanism. As the spiral conveying rod rotates, the tobacco stems are conveyed to the impeller assembly on the right. The motor drives the tobacco stem spiral worm and impeller to rotate through the toothed belt. The impeller blades cut off the airflow of the "Z-shaped" channel, and the tobacco stems are scraped out of the "Z-shaped" channel, while the airflow of the "Z-shaped" channel is not interfered by the outside. The separated tobacco stems are conveyed to the centralized dust removal pipeline or tobacco stem box through the stem outlet impeller, vibration trough, and air duct.

[0005] The stem-discharging impeller in the tobacco stem conveying mechanism scatters the tobacco stems separated by the stem-shred separation mechanism to the front end of the vibration trough, and the vibration trough conveys the tobacco stems to the rear end of the vibration trough and drops them into the collection box. The function of the vibration trough is only to convey the tobacco stems scraped out by the stem-discharging impeller. It only plays the function of conveying and has no other function. However, since the vibration trough will generate dust when it is working, and its eccentric shaft, bearings, motor and other parts need to be repaired regularly due to damage, it will increase the maintenance cost on the one hand and affect the operation efficiency of the unit on the other hand. At the same time, the vibration trough works 24 hours a day. It is an open component that uses vibration to convey the tobacco stems forward. The tobacco stems will generate dust when vibrating. The dust falls into the unit, affecting the cleanliness of the inside of the unit and easily leading to the breeding of tobacco insects.

[0006] In addition, production staff need to regularly test tobacco stems to guide the separation of stems and ensure the quality of cigarettes. Currently, there is no online sampling function on the unit. When inspectors take samples, they need to squat, take down the collection box, and use a plastic bag to collect the tobacco stems at the collection box. The collection amount is inaccurate and very inconvenient. At the same time, there is a risk of injury when the vibration trough is working.

[0007] To this end, the present applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0008] The technical problem to be solved by the present invention is: to provide a tobacco stem sealing and conveying device which reduces maintenance costs, improves the operating efficiency of the unit, ensures the internal cleanliness of the unit, and facilitates sampling and testing in view of the deficiencies of the prior art.

[0009] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0010] A tobacco stem sealing and conveying device, comprising:

[0011] Integrated cabinet;

[0012] A three-way pipe fitting is arranged in the integrated box, the three-way pipe fitting has a feed inlet, a discharge port and a sampling outlet, and the discharge port of the three-way pipe fitting is connected to a tobacco stem centralized recovery system;

[0013] A flow diversion control mechanism disposed in the integrated box and located on one side of the three-way pipe fitting for controlling the flow diversion of the three-way pipe fitting;

[0014] A sampling box detachably mounted in the integrated box, wherein a sampling inlet of the sampling box is connected to a sampling outlet of the three-way pipe fitting;

[0015] A feed pipe, one end of which is connected to the feed port of the three-way pipe fitting;

[0016] A negative pressure generator installed in the feed pipe;

[0017] a tobacco stem conveying mechanism, the tobacco stem conveying mechanism being used to convey the tobacco stems separated by the stem shred separation mechanism into the feed pipe; and

[0018] A PLC control system is connected to the diversion control mechanism, the negative pressure generator and the tobacco stem conveying mechanism respectively.

[0019] In a preferred embodiment of the present invention, the flow diversion control mechanism comprises:

[0020] A flow dividing rotating paddle axially disposed in the three-way pipe fitting and used for controlling the connection between the feed port and the discharge port of the three-way pipe fitting or the connection between the feed port and the sampling outlet; and

[0021] A rotary cylinder installed in the integrated box and located on one side of the three-way pipe fitting and connected to the PLC control system, wherein the rotary cylinder is connected to the diverter rotating paddle via a coupling and is used to control the diverter rotating paddle to rotate.

[0022] In a preferred embodiment of the present invention, the tobacco stem conveying mechanism comprises:

[0023] A feed base is arranged on the feed pipe, the feed base has a feed chamber, and the feed chamber of the feed base is connected with the tube cavity of the feed pipe;

[0024] a tobacco stem conveying pipe, one end of which is connected to the tobacco stem discharge port of the cut stem separation mechanism, and the other end of which is connected to the feed base and communicated with the feed chamber of the feed base;

[0025] A spiral shaft installed in the tobacco stem conveying pipe, one end of the spiral shaft extending into the feed chamber of the feed base;

[0026] A stem-discharging impeller having a shaft disposed in the feed chamber of the feed base and used for spreading the tobacco stems entering the feed chamber of the feed base into the feed pipe; and

[0027] A tobacco stem conveying drive assembly is installed on one side of the feed base and connected to the PLC control system, and is used to drive the spiral shaft and the stem outlet impeller to rotate in coordination.

[0028] In a preferred embodiment of the present invention, the tobacco stem conveying drive assembly includes a driving motor, a driving gear set and a protective shell, the driving motor is respectively connected to the screw shaft and the stem outlet impeller through the driving gear set, and the protective shell is covered on the outer periphery of the driving gear set.

[0029] In a preferred embodiment of the present invention, a discharge elbow serving as a temporary discharge port is provided on the bottom surface of the integrated box, and the sampling box is located between the sampling outlet of the three-way pipe fitting and the discharge elbow.

[0030] In a preferred embodiment of the present invention, a fixing seat for suspending the integrated box is installed on the side of the integrated box.

[0031] In a preferred embodiment of the present invention, a dust sealing cap is provided on the other end of the feeding pipe.

[0032] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0033] 1. The present invention adopts a negative pressure air duct method to transport tobacco stems, eliminates the vibration trough component, and improves the original open tobacco stem transportation method to a closed tobacco stem transportation method, thereby reducing equipment maintenance and downtime, reducing dust generation, and ensuring the cleanliness of the inside of the unit.

[0034] 2. The present invention adds an online sampling function for tobacco stems, which facilitates sampling and has high sampling accuracy, while avoiding the hidden danger of injury during vibration sampling.

[0035] 3. The present invention provides a discharge elbow as a temporary discharge port on the bottom surface of the integrated box. When the tobacco stem centralized recovery system fails, the sampling box is removed, and a waste cigarette empty box is placed under the discharge elbow. The sampling mode is turned on and the tobacco stems are introduced into the waste cigarette empty box, thus avoiding unnecessary downtime.

[0036] 4. The integrated box of the present invention adopts a hanging arrangement. On the one hand, it is easy to clean and not easy to accumulate dust. On the other hand, the empty waste smoke box on the unit can be conveniently placed under the integrated box. When the tobacco stem centralized recovery system fails, it will not affect the normal operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0039] Figure 2 It is the front view of the present invention.

[0040] Figure 3 It is a side view of the present invention.

[0041] Figure 4 It is a structural schematic diagram of the integrated box part of the present invention.

[0042] Figure 5 It is a front view of the combination of the three-way pipe fitting and the flow diversion control mechanism of the present invention.

[0043] Figure 6 It is a top view of the combination of the three-way pipe fitting and the flow diversion control mechanism of the present invention.

[0044] Figure 7 It is a side view of the combination of the three-way pipe fitting and the flow diversion control mechanism of the present invention. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0046] See also Figures 1 to 3 The figure shows a tobacco stem sealing and conveying device, which includes an integrated box 100, a three-way pipe 200, a flow diversion control mechanism 300, a sampling box 400, a feeding pipe 500, a negative pressure generator 600, a tobacco stem conveying mechanism 700 and a PLC control system (not shown in the figure). The PLC control system is respectively connected to the flow diversion control mechanism 300, the negative pressure generator 600 and the tobacco stem conveying mechanism 700, and is used to control the flow diversion control mechanism 300, the negative pressure generator 600 and the tobacco stem conveying mechanism 700 to work in coordination.

[0047] See also Figure 4 Combined with Figures 1 to 3 The integrated box 100 is a rectangular box, and its top cover plate 110 is detachable, which is convenient for installing components such as the three-way pipe fitting 200 and the diversion control mechanism 300 in the integrated box 100.

[0048] See also Figures 5 to 7 The three-way pipe fitting 200 is arranged in the integrated box 100. The three-way pipe fitting 200 has a feed port 210, a discharge port 220 and a sampling outlet 230. The discharge port 220 of the three-way pipe fitting 200 is connected to the tobacco stem centralized recovery system (not shown in the figure).

[0049] The flow diversion control mechanism 300 is arranged in the integrated box 100 and is located on one side of the three-way pipe fitting 200, and is used to control the flow diversion of the three-way pipe fitting 200. Specifically, the flow diversion control mechanism 300 includes a flow diversion rotating paddle (not shown in the figure) and a rotating cylinder 310. The flow diversion rotating paddle shaft is arranged in the three-way pipe fitting 200, and is used to control the connection between the feed port 210 and the discharge port 220 of the three-way pipe fitting 200 or the connection between the feed port 210 and the sampling outlet 230. The rotating cylinder 310 is installed in the integrated box 100 and is located on one side of the three-way pipe fitting 200 and is connected to the PLC control system. The rotating cylinder 310 is connected to the flow diversion rotating paddle through a coupling 320, and is used to control the rotation of the flow diversion rotating paddle.

[0050] The sampling box 400 is detachably mounted in the integrated box 100, and the sampling inlet of the sampling box 400 is connected to the sampling outlet 230 of the three-way pipe fitting 200 for collecting tobacco stem samples online. One end of the feed pipe 500 is connected to the feed port 210 of the three-way pipe fitting 200, and a dust cap 510 is provided on the other end thereof to prevent debris or dust from entering the feed pipe 500. The negative pressure generator 600 is installed in the feed pipe 500, and is used to generate negative pressure in the feed pipe 500 to transport the tobacco stems into the three-way pipe fitting 200.

[0051] The tobacco stem conveying mechanism 700 is used to convey the tobacco stems separated by the stem shred separation mechanism into the feed pipe 500. The tobacco stem conveying mechanism 700 includes a feed base 710, a tobacco stem conveying pipe (not shown in the figure), a spiral shaft 720, a stem discharge impeller 730, and a tobacco stem conveying drive assembly 740. The feed base 710 is disposed on the feed pipe 500, and the feed base 710 has a feed chamber 711, and the feed chamber 711 of the feed base 710 is connected to the tube cavity of the feed pipe 500. One end of the tobacco stem conveying pipe is connected to the tobacco stem discharge port of the stem shred separation mechanism, and the other end thereof is connected to the feed base 710 and is connected to the feed chamber 711 of the feed base 710. The spiral shaft 720 is installed in the tobacco stem conveying pipe, and one end of the spiral shaft 720 extends into the feed chamber 711 of the feed base 710, which is used to convey the tobacco stems entering the tobacco stem conveying pipe to the feed chamber 711 of the feed base 710. The stem discharge impeller 730 is arranged in the feed chamber 711 of the feed base 710, and is used to spread the tobacco stems entering the feed chamber 711 of the feed base 710 into the feed pipe 500. The tobacco stem conveying drive assembly 740 is installed on one side of the feed base 710 and connected to the PLC control system, which is used to drive the spiral shaft 720 and the stem discharge impeller 730 to rotate in coordination.

[0052] The tobacco stem conveying drive assembly 740 includes a driving motor 741, a driving gear set (not shown in the figure) and a protective shell 742. The driving motor 741 is connected to the screw shaft 720 and the stem outlet impeller 730 respectively through the driving gear set. The protective shell 742 is covered on the outer periphery of the driving gear set to protect the driving gear set from damage.

[0053] A discharge elbow 800 is provided on the bottom surface of the integrated box 100 as a temporary discharge port, and the sampling box 400 is located between the sampling outlet 230 of the three-way pipe 200 and the discharge elbow 800. When the tobacco stem centralized recovery system fails, the sampling box 400 is removed, and a waste cigarette empty box is placed under the discharge elbow 800. When the sampling mode is turned on, the tobacco stems will be introduced into the waste cigarette empty box, avoiding unnecessary downtime.

[0054] A fixing seat 120 is installed on the side of the integrated box 100, and the integrated box 100 is suspended by the fixing seat 120. On the one hand, it is easy to clean and not prone to dust accumulation. On the other hand, the empty waste smoke box on the unit can be conveniently placed under the integrated box 100. When the tobacco stem centralized recovery system fails, it will not affect the normal operation of the unit.

[0055] The working process of the tobacco stem sealing and conveying device of the present invention is as follows:

[0056] The tobacco stems separated by the stem separation mechanism are sent into the tobacco stem conveying pipe, and the spiral shaft 720 is driven by the tobacco stem conveying drive assembly 740 to rotate, and the tobacco stems entering the tobacco stem conveying pipe are conveyed to the feed chamber 711 of the feed base 710. Then, the stem discharging impeller 730 is driven by the tobacco stem conveying drive assembly 740 to rotate, and the tobacco stems in the feed chamber 711 of the feed base 710 are transferred into the feed pipe 500; the negative pressure generator 600 works to generate negative pressure in the feed pipe 500, and the tobacco stems are conveyed to the three-way pipe fitting 200 under the action of the negative pressure.

[0057] During normal operation, the rotating cylinder 310 rotates the diversion rotating paddle to the discharge position through the coupling 320, so that the feed port 210 of the three-way pipe fitting 200 is connected with the discharge port 200. At this time, the feed port 210 and the sampling outlet 230 of the three-way pipe fitting 200 are closed, and the tobacco stems are transported to the tobacco stem centralized recovery system.

[0058] When sampling is required, the rotary cylinder 310 rotates the flow dividing rotating paddle to the sampling position through the coupling 320, so that the feed port 210 of the three-way pipe fitting 200 is connected with the sampling outlet 230. At this time, the feed port 210 and the discharge port 200 of the three-way pipe fitting 200 are closed, and the tobacco stems are transported to the sampling box 400. After the tobacco stem sampling is completed, the rotary cylinder 310 drives the flow dividing rotating paddle to rotate to the discharge position, and the tobacco stems are directly transported to the tobacco stem centralized recovery system.

[0059] When the tobacco stem centralized recovery system fails, the sampling box 400 is removed and a waste cigarette box is placed under the discharge elbow 800. At this time, the sampling outlet 230 of the three-way pipe fitting 200 is connected to the discharge elbow 800, and then the conveying device is switched to the sampling mode. The tobacco stems fall into the waste cigarette box through the discharge elbow 800, avoiding unnecessary downtime.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tobacco stem sealing and conveying device, characterized in that: include: Integrated cabinet; A three-way pipe fitting is arranged in the integrated box, the three-way pipe fitting has a feed inlet, a discharge port and a sampling outlet, and the discharge port of the three-way pipe fitting is connected to a tobacco stem centralized recovery system; A flow diversion control mechanism disposed in the integrated box and located on one side of the three-way pipe fitting for controlling the flow diversion of the three-way pipe fitting; A sampling box detachably mounted in the integrated box, wherein a sampling inlet of the sampling box is connected to a sampling outlet of the three-way pipe fitting; A feed pipe, one end of which is connected to the feed port of the three-way pipe fitting; A negative pressure generator installed in the feed pipe; A tobacco stem conveying mechanism, the tobacco stem conveying mechanism is used to convey the tobacco stems separated by the stem shred separation mechanism into the feed pipe; as well as A PLC control system, wherein the PLC control system is respectively connected to the diversion control mechanism, the negative pressure generator and the tobacco stem conveying mechanism; The diversion control mechanism comprises: A flow dividing rotating paddle axially disposed in the three-way pipe fitting and used for controlling the connection between the feed port and the discharge port of the three-way pipe fitting or the connection between the feed port and the sampling outlet; and A rotary cylinder installed in the integrated box and located on one side of the three-way pipe fitting and connected to the PLC control system, wherein the rotary cylinder is connected to the flow-dividing rotating paddle through a coupling and is used to control the flow-dividing rotating paddle to rotate; The tobacco stem conveying mechanism comprises: A feed base is arranged on the feed pipe, the feed base has a feed chamber, and the feed chamber of the feed base is connected with the tube cavity of the feed pipe; a tobacco stem conveying pipe, one end of which is connected to the tobacco stem discharge port of the cut stem separation mechanism, and the other end of which is connected to the feed base and communicated with the feed chamber of the feed base; A spiral shaft installed in the tobacco stem conveying pipe, one end of the spiral shaft extending into the feed chamber of the feed base; A stem-discharging impeller having a shaft disposed in the feed chamber of the feed base and used for spreading the tobacco stems entering the feed chamber of the feed base into the feed pipe; and A tobacco stem conveying drive assembly installed on one side of the feed base and connected to the PLC control system for driving the screw shaft and the stem outlet impeller to rotate in coordination; The tobacco stems separated by the stem separation mechanism are sent into the tobacco stem conveying pipe, and the spiral shaft is driven by the tobacco stem conveying drive component to rotate, and the tobacco stems entering the tobacco stem conveying pipe are conveyed to the feeding chamber of the feeding base, and then the stem discharging impeller is driven by the tobacco stem conveying drive component to rotate, and the tobacco stems in the feeding chamber of the feeding base are pushed into the feeding pipe; the negative pressure generator works to generate negative pressure in the feeding pipe, and the tobacco stems are conveyed to the three-way pipe fitting under the action of the negative pressure; During normal operation, the rotary cylinder rotates the diversion rotating paddle to the discharge position through the coupling, so that the feed port of the three-way pipe fitting is connected with the discharge port. At this time, the feed port and the sampling outlet of the three-way pipe fitting are closed, and the tobacco stems are transported to the tobacco stem centralized recovery system; When sampling is required, the rotary cylinder rotates the flow-dividing rotating paddle to the sampling position through the coupling, so that the feed port of the three-way pipe fitting is connected with the sampling outlet. At this time, the feed port and the discharge port of the three-way pipe fitting are closed, and the tobacco stems are transported to the sampling box; when the tobacco stem sampling is completed, the flow-dividing rotating paddle is driven by the rotary cylinder to rotate to the discharge position, and the tobacco stems are directly transported to the tobacco stem centralized recovery system; When the centralized tobacco stem recovery system fails, remove the sampling box and place an empty waste tobacco box under the discharge elbow. At this time, the sampling outlet of the three-way pipe is connected to the discharge elbow, and then the conveying device is switched to the sampling mode. The tobacco stems fall into the empty waste tobacco box through the discharge elbow, avoiding unnecessary downtime.

2. The tobacco stem sealing and conveying device according to claim 1, characterized in that: The tobacco stem conveying drive assembly includes a driving motor, a driving gear set and a protective shell. The driving motor is respectively connected to the screw shaft and the stem outlet impeller through the driving gear set, and the protective shell is covered on the outer periphery of the driving gear set.

3. The tobacco stem sealing and conveying device according to claim 1, characterized in that: A discharge elbow serving as a temporary discharge port is arranged on the bottom surface of the integrated box, and the sampling box is located between the sampling outlet of the three-way pipe fitting and the discharge elbow.

4. The tobacco stem sealing and conveying device according to claim 1, characterized in that: A fixing seat for suspending the integrated box is installed on the side of the integrated box.

5. The tobacco stem sealing and conveying device according to claim 1, characterized in that: A dust sealing cap is arranged on the other end of the feeding pipe.

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