Automatic dredging device and cigarette making machine equipment

Abstract

The embodiment of the utility model discloses an automatic dredging device and cigarette making machine equipment. The automatic dredging device comprises a correlation type photoelectric detection switch, a control unit and an air injection unit, the correlation type photoelectric detection switch is used for detecting the height of the material level in the material level detection pipe; the air injection unit is configured to inject air into the material level detection pipe in an angle-adjustable manner; the control unit is configured to control the air injection unit to inject air to dredge the material level detection pipe when the material level exceeds the height limit value. The material level height is detected through the correlation type photoelectric detection switch arranged on the material level detection pipe, and when the height exceeds a height limit value, the air injection unit is automatically started to inject air for dredging; the technical problems that in the prior art, a material level detection pipe is prone to being blocked, dredging can only be conducted manually after material blocking, dredging difficulty is large, dredging time is long, the process quality is affected by single-batch material breakage, and labor cost is high are solved.

Description

Technical Field

[0001] This utility model relates to the field of cigarette machine equipment control technology, and in particular to an automatic unblocking device and cigarette machine equipment. Background Technology

[0002] In tobacco processing equipment, the metering tube (also known as the material level detection tube) is a key component for material conveying, used to control the temporary storage and quantitative conveying of materials such as tobacco shreds and tobacco sheets. After the material enters the metering tube via a belt conveyor, the conveying rate is dynamically adjusted according to the needs of downstream equipment (such as electronic belt scales or subsequent conveyor belts).

[0003] However, the current limited-quantity pipe has the following problems: (1) When the downstream conveying equipment of the limited-quantity pipe is frequently started and stopped or shut down for a long time due to process requirements, the material accumulated in the pipe is gradually compacted into a dense agglomerate under the action of gravity. When the conveying equipment is restarted, the agglomerated material gets stuck in the pipe due to increased frictional resistance and cannot fall normally. (2) The material mixed with smoke blocks or large-sized impurities is prone to friction with the inner wall of the limited-quantity pipe, causing local jamming, which leads to the continuous accumulation of subsequent materials and eventually forms a blockage. (3) When the upstream conveying equipment (such as the feed belt) causes a sudden increase in the thickness of the material due to abnormal control, the excessive material rushes into the limited-quantity pipe and cannot be evenly dispersed, resulting in blockage of the internal channel of the pipe. Once a blockage occurs, it can only be cleared manually. Due to the space occupied by the limited-quantity pipe, it is often installed at high altitude. If a blockage occurs, it is difficult and time-consuming for the operator to clear the blockage, which will lead to batch interruption and affect the process quality. Utility Model Content

[0004] This utility model provides an automatic unblocking device and cigarette machine equipment, which solves the technical problems of the prior art, such as the material level detection pipe being prone to blockage and the need for manual unblocking after blockage, which are difficult to unblock, take a long time to unblock, affect the process quality due to material interruption in a single batch, and have high labor costs.

[0005] This utility model embodiment provides an automatic unblocking device, which is installed on a material level detection pipe and includes a through-beam photoelectric detection switch, a control unit, and an air jet unit.

[0006] Both the through-beam photoelectric detection switch and the jet unit are electrically connected to the control unit.

[0007] The through-beam photoelectric detection switch is used to detect the material level height inside the material level detection tube;

[0008] The jetting unit is configured to inject gas into the material level detection tube at an adjustable angle;

[0009] The control unit is configured to control the jetting unit to spray air to clear the material level detection pipe when the material level exceeds the limit value.

[0010] Furthermore, the jet unit includes at least two nozzles and a nozzle connector;

[0011] At least two of the nozzles are respectively disposed above the observation windows on both sides of the material level detection tube, and the nozzle interfaces are fixed perpendicular to the observation windows;

[0012] The initial angle of the nozzle is 60° downwards;

[0013] At least two of the nozzles are connected to the air compressor via the nozzle connector.

[0014] Furthermore, the through-beam photoelectric detection switch includes a transmitter and a receiver;

[0015] The transmitter is positioned above one side of the material level detection tube and is higher than the high material level scale in the material level detection tube;

[0016] The receiver is positioned above the transmitter on the other side of the material level detection tube.

[0017] Furthermore, the control unit includes a timer;

[0018] The timer is configured to extend the timing preset duration when the through-beam photoelectric detection switch detects that the material level in the material level detection tube is lower than a set value.

[0019] The control unit is also configured to control the jet unit to shut down after the preset duration.

[0020] Furthermore, the nozzle connector is a pneumatic tee quick-connect fitting.

[0021] Furthermore, the jet unit also includes a solenoid valve;

[0022] The solenoid valve is located between the nozzle connector and the air compressor, and is electrically connected to the control unit through a sleeve on the side of the material level detection tube.

[0023] Furthermore, the control unit is located inside the electrical control cabinet of the material level detection tube, or the control unit is the electrical control cabinet of the material level detection tube.

[0024] Furthermore, the automatic unblocking device also includes an alarm unit, which is electrically connected to the control unit;

[0025] The alarm unit is configured to issue an alarm when the material level in the material level detection tube exceeds the limit value.

[0026] Furthermore, the jet unit also includes the air compressor.

[0027] This invention also provides a cigarette rolling machine, which includes the automatic unblocking device described in any of the above embodiments.

[0028] This utility model discloses an automatic unblocking device and a cigarette machine. The automatic unblocking device includes a through-beam photoelectric detection switch, a control unit, and an air jet unit. The through-beam photoelectric detection switch is used to detect the material level height in the material level detection tube. The air jet unit is configured to spray gas into the material level detection tube at an adjustable angle. The control unit is configured to control the air jet unit to unblock the material level detection tube when the material level exceeds the limit value. This application detects the material level height using a through-beam photoelectric detection switch installed on the material level detection tube itself, and automatically activates the air jet unit to unblock the tube when the height exceeds the limit value. This solves the technical problems of existing technologies where material level detection tubes are prone to blockage, requiring manual unblocking after blockage, resulting in high unblocking difficulties, long unblocking times, batch material interruptions affecting process quality, and high labor costs. It achieves the technical effect of automated unblocking of the material level detection tube, reducing manual intervention and improving the unblocking efficiency of the material level detection tube. Attached Figure Description

[0029] Figure 1 This is a structural block diagram of an automatic unblocking device provided in an embodiment of this utility model;

[0030] Figure 2 This is a structural diagram of an automatic unblocking device provided in an embodiment of this utility model. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish different objects, not to limit a specific order. The various embodiments of this utility model described below can be performed individually, or they can be combined with each other; this utility model does not impose specific limitations in this regard.

[0033] Figure 1 This is a structural block diagram of an automatic unblocking device provided in an embodiment of this utility model. Figure 2 This is a structural diagram of an automatic unblocking device provided in an embodiment of this utility model.

[0034] like Figure 1 As shown, the automatic unblocking device 1 is installed on the material level detection pipe 2, including a through-beam photoelectric detection switch 10, a control unit 20, and an air jet unit 30; the through-beam photoelectric detection switch 10 and the air jet unit 30 are both electrically connected to the control unit 20.

[0035] A through-beam photoelectric detection switch 10 is used to detect the material level height in the material level detection tube 2; an air jet unit 30 is configured to spray gas into the material level detection tube 2 with an adjustable angle; and a control unit 20 is configured to control the air jet unit 30 to spray gas to clear the material level detection tube 2 when the material level exceeds the limit value.

[0036] Specifically, the material level detection tube 2 in the cigarette machine adopts a hollow and vertical cuboid structure, with a through-beam grating installed on the side to detect the height of the material level in the tube, which is divided into low, medium, and high levels. A through-beam photoelectric detection switch 10 is installed above the material level detection tube 2 to determine whether there is blockage in the measuring tube. The jet angle of the jet unit 30 is adjustable, which is beneficial for controlling the gas jet angle.

[0037] When material blockage occurs in the material level detection pipe 2, the through-beam photoelectric detection switch 10 is triggered. Based on the trigger signal from the through-beam photoelectric detection switch 10, the control unit 20 controls the jetting unit 30 to spray gas into the material level detection pipe 2 to clear the blockage. This achieves automated detection and clearing of material blockages in the material level detection pipe 2. It not only avoids the need for manual climbing to a high position to clear the blockage after it occurs, but also clears the blockage by spraying gas before the material exceeds the height limit and is compacted, making clearing easier and reducing the time required.

[0038] This invention solves the technical problems of material level detection pipes in the prior art, which are prone to blockage and require manual unblocking, resulting in high unblocking difficulties, long unblocking time, impact on process quality due to material interruption in a single batch, and high labor costs. It achieves the technical effect of automated unblocking of material level detection pipes, reducing manual intervention and improving the unblocking efficiency of material level detection pipes.

[0039] Optionally, the jet unit 30 includes at least two nozzles 31 and a nozzle connector 32;

[0040] At least two nozzles 31 are respectively disposed above the observation windows 21 on both sides of the material level detection tube 2, and the interface of the nozzles 31 is fixed perpendicular to the observation window 21; the initial angle of the nozzles 31 is 60° downward; at least two nozzles 31 are connected to the air compressor through nozzle connectors 32.

[0041] Specifically, the nozzle 31 is an angle-adjustable compressed air nozzle. The two nozzles 31 are installed above the observation windows 21 on both sides of the material level detection pipe 2. The observation windows 21 are made of acrylic material. During installation, the observation windows 21 on both sides can be removed. A hole is drilled 5cm above the top of the acrylic plate using a water tower drill bit for the installation of the nozzles 31. The nozzle head angle of the nozzles 31 is adjusted to 60° downward. The interface of the nozzles 31 is fixedly installed perpendicular to the observation windows 21 so that the nozzles 31 can more effectively direct the gas to blow away the blocked material in the material level detection pipe 2.

[0042] Optionally, the through-beam photoelectric detection switch 10 includes a transmitter 11 and a receiver 12;

[0043] The transmitter 11 is positioned above one side of the material level detection tube 2 and is higher than the high material level scale in the material level detection tube 2; the receiver 12 is positioned above the other side of the material level detection tube 2, corresponding to the transmitter 11.

[0044] Specifically, the through-beam photoelectric detection switch 10 consists of a separate transmitter 11 and a receiver 12. The transmitter 11 emits a light signal, and the receiver 12 triggers the signal by detecting whether the material blocks or reflects the light beam. The transmitter 11 converts current into a light signal and emits it. The receiver 12 determines the presence or absence of an object based on the intensity of the received light, thereby detecting whether there is a blockage in the material level detection tube 2.

[0045] Optionally, the control unit 20 includes a timer;

[0046] The timer is configured to extend the preset time when the material level in the material level detection tube 2 is lower than the set value when the through-beam photoelectric detection switch 10 detects that the material level is lower than the set value; the control unit 20 is also configured to control the jet unit 30 to shut down after the preset time.

[0047] Specifically, when the jet unit 30 starts to spray, after the material level detection tube 2 is cleared by the spray, the through-beam photoelectric detection switch 10 detects that the material level in the material level detection tube 2 is lower than the set value. In theory, the jet unit 30 should be turned off to stop spraying. However, the dust that has accumulated inside the material level detection tube 2 for a long time is easy to adhere to the surface of the detection equipment, including the through-beam photoelectric detection switch 10, which reduces its sensitivity and easily triggers false alarms or delayed alarms, making it impossible to identify and deal with the material blockage problem in a timely manner.

[0048] Therefore, a timer is installed in the control unit 20. When the through-beam photoelectric detection switch 10 detects that the material level in the material level detection tube 2 is lower than the set value, the timer starts counting down. This causes the control unit 20 to control the jet unit 30 to shut down after a preset delay. The preset delay can be set to 5 seconds, etc., as needed. During the preset delay, the gas sprayed by the jet unit 30 is used to clean the observation window 21 inside the material level detection tube 2 after clearing the material, achieving a cleaning effect and preventing the detection equipment from falsely alarming due to a small amount of smoke or dust in the observation window 21.

[0049] Optionally, the nozzle connector 32 is a pneumatic tee quick-connect fitting.

[0050] Specifically, the nozzle connector 32 can be a pneumatic tee quick-connect fitting, which is a one-to-two quick-connect fitting for converting compressed air to compressed air. By placing it on the back plate of the material level detection pipe 2, it allows two nozzles 31 to be connected to the air compressor via a single nozzle connector 32.

[0051] Optionally, the jet unit 30 further includes a solenoid valve; the solenoid valve is disposed between the nozzle connector 32 and the air compressor, and the solenoid valve is electrically connected to the control unit 20 through the sleeve on the side of the material level detection pipe 2.

[0052] Specifically, the solenoid valve is also fixedly installed on the back plate of the material level detection pipe 2 to control the on / off connection between the air compressor and the nozzle connector 32. A two-position two-way solenoid valve can be selected to control the action of the nozzle 31, and a Festo 6mm standard air hose is used to reliably connect the solenoid valve to the air source (i.e., the air compressor) and the nozzle 31.

[0053] Simultaneously, the solenoid valve's connection line is connected to the I / O (input / output) module of the PLC (Programmable Logic Controller) in the lower electrical control cabinet via the sleeve and cable tray on the side of the level detection pipe 2. A single two-core cable is then used to connect the solenoid valve's wiring to the lower substation electrical control cabinet via the side cable tray and conduit, and electrically connected to the DO output point of the PLC in the electrical control cabinet.

[0054] When the grating of the material level detection tube 2 is in an abnormal state or the material level detection tube 2 is blocked, the output module DO output point will output 24V to the solenoid valve. The solenoid valve will activate the PA channel (P represents the pressure input port and A is the working port), and compressed air will enter the two nozzles 31 to blow the material until the alarm disappears. After a preset time delay, the solenoid valve will close to clear the material and blow the observation window inside the limit tube to achieve a cleaning effect.

[0055] Optionally, the control unit 20 is located inside the electrical control cabinet of the material level detection tube 2, or the control unit 20 is the electrical control cabinet of the material level detection tube 2.

[0056] Specifically, the control unit 20 can be an independent control chip and set in the electrical control cabinet of the material level detection tube 2, or it can be a control module integrated in the electrical control cabinet. No specific restrictions are made here.

[0057] Optionally, the automatic dredging device 1 also includes an alarm unit, which is electrically connected to the control unit 20;

[0058] The alarm unit is configured to issue an alarm when the material level in the material level detection tube 2 exceeds the limit value.

[0059] Specifically, when the through-beam photoelectric detection switch 10 detects that the material level in the material level detection tube 2 is lower than the set value, the alarm unit issues an alarm prompt, and at the same time, the control unit 20 controls the jet unit 30 to spray gas to clear the blockage. When the through-beam photoelectric detection switch 10 detects that the material in the material level detection tube 2 has been cleared and the material level is lower than the set value, the alarm unit stops alarming, and the jet unit 30 will spray gas for a preset time before shutting off.

[0060] Optionally, the jet unit 30 may also include an air compressor.

[0061] Specifically, the air compressor is connected to the nozzle connector 32 via a solenoid valve, and compressed gas is blown out from the nozzle 31 through the nozzle connector 32 to clear the material level detection pipe 2.

[0062] This utility model embodiment also provides a cigarette rolling machine device, which includes the automatic unblocking device in any of the above embodiments.

[0063] The cigarette machine equipment provided in this embodiment includes the automatic unblocking device in the above embodiment. Therefore, the cigarette machine equipment provided in this embodiment also has the beneficial effects described in the above embodiment, which will not be repeated here.

[0064] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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.

[0065] Finally, it should be noted that the above are merely preferred embodiments and the technical principles applied in this utility model. Those skilled in the art will understand that this utility model is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. Therefore, although the utility model has been described in detail through the above embodiments, this utility model is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this utility model, and the scope of this utility model is determined by the scope of the appended claims.

Claims

1. An automatic unblocking device, characterized in that, The automatic unblocking device is installed on the material level detection pipe and includes a through-beam photoelectric detection switch, a control unit, and an air jet unit; Both the through-beam photoelectric detection switch and the jet unit are electrically connected to the control unit. The through-beam photoelectric detection switch is used to detect the material level height inside the material level detection tube; The jetting unit is configured to inject gas into the material level detection tube at an adjustable angle; The control unit is configured to control the jetting unit to spray air to clear the material level detection pipe when the material level exceeds the limit value.

2. The automatic unblocking device according to claim 1, characterized in that, The jet unit includes at least two nozzles and a nozzle connector; At least two of the nozzles are respectively disposed above the observation windows on both sides of the material level detection tube, and the nozzle interfaces are fixed perpendicular to the observation windows; The initial angle of the nozzle is 60° downwards; At least two of the nozzles are connected to the air compressor via the nozzle connector.

3. The automatic unblocking device according to claim 1, characterized in that, The through-beam photoelectric detection switch includes a transmitter and a receiver; The transmitter is positioned above one side of the material level detection tube and is higher than the high material level scale in the material level detection tube; The receiver is positioned above the transmitter on the other side of the material level detection tube.

4. The automatic unblocking device according to claim 1, characterized in that, The control unit includes a timer; The timer is configured to extend the timing preset duration when the through-beam photoelectric detection switch detects that the material level in the material level detection tube is lower than a set value. The control unit is also configured to control the jet unit to shut down after the preset duration.

5. The automatic unblocking device according to claim 2, characterized in that, The nozzle connector is a pneumatic tee quick-connect fitting.

6. The automatic unblocking device according to claim 2, characterized in that, The jet unit also includes a solenoid valve; The solenoid valve is located between the nozzle connector and the air compressor, and is electrically connected to the control unit through a sleeve on the side of the material level detection tube.

7. The automatic unblocking device according to claim 1, characterized in that, The control unit is located inside the electrical control cabinet of the material level detection tube, or the control unit is the electrical control cabinet of the material level detection tube.

8. The automatic unblocking device according to claim 1, characterized in that, The automatic unblocking device also includes an alarm unit, which is electrically connected to the control unit; The alarm unit is configured to issue an alarm when the material level in the material level detection tube exceeds the limit value.

9. The automatic unblocking device according to claim 2, characterized in that, The jet unit also includes the air compressor.

10. A cigarette rolling machine, characterized in that, The cigarette rolling machine equipment includes the automatic unblocking device as described in any one of claims 1 to 9.

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