Automatic water feeding control method for secondary feeding process

Abstract

This invention belongs to the field of cigarette manufacturing technology, specifically relating to an automatic water addition control method for a secondary feeding process. A moisture meter at the drum outlet detects that the moisture content of the tobacco sheets at the drum outlet is lower than a set range and transmits this information to the controller. The controller determines the current status of the automatic water addition control device. If the automatic water addition control device is not currently performing feeding operations, it controls the automatic water addition control device to enter the water addition control state. Softened water in the storage tank enters the second dual-media nozzle through a vane pump and flow meter, adding water to the drum. This technical solution, by installing an automatic water addition device on the feeder, utilizes part of the original equipment's feeding device to construct an automatic water addition device that meets process requirements, saving equipment purchase costs, ensuring production continuity, further stabilizing the outlet moisture content of the tobacco sheets, improving the processing resistance and product quality of the tobacco sheets, and providing strong support for the stability of subsequent processing parameters.

Description

Technical Field

[0001] This invention belongs to the field of cigarette manufacturing technology, specifically relating to an automatic water addition control method for a secondary feeding process. Background Technology

[0002] Due to variations in the raw material leaf blends and their varying moisture absorption properties, the loosening and rehydration process employs a constant water supply mode. This mode has limited heating and humidification capabilities, resulting in significant moisture fluctuations after rehydration. Furthermore, the next process involves a single feeding without water control, leaving the moisture content uncontrolled and leading to uneven moisture content in the pre-mixed tobacco sheets. To meet production and process requirements, and to stabilize the moisture content of the leaf fibers between and within batches, water needs to be added to the leaves. However, the existing secondary feeding process also lacks water control. Constructing a separate water supply pipeline would be time-consuming, costly, and disruptive to production continuity, while also lacking the necessary space for equipment installation on the production site. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic water addition control method for a secondary feeding process, so as to solve the problems existing in the background art caused by the lack of water addition control function in the current secondary feeding process.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0005] An automatic water addition control method for a secondary feeding process includes the following steps:

[0006] S1. In the secondary feeding process, the moisture meter at the drum outlet detects that the moisture content of the tobacco at the drum outlet is lower than the set range and transmits this information to the controller.

[0007] S2. The controller determines the current status of the automatic water filling control device. If the automatic water filling control device is not currently performing a feeding operation, it controls the automatic water filling control device to enter the water filling control state.

[0008] S3. Softened water in the storage tank enters the second dual-media nozzle through a vane pump and flow meter to add water into the drum. A moisture meter monitors the moisture content of tobacco at the drum outlet in real time.

[0009] Furthermore, if the controller determines that the automatic water filling control device is currently in the feeding control state, it will directly enter the water filling control state after the feeding operation is completed.

[0010] Furthermore, the automatic water filling control device includes a storage tank, in which a load sensor and a temperature sensor are installed; a softened water pipe and a steam pipe are respectively connected to the storage tank; one end of the main pipe is connected to the outlet of the storage tank, and the other end extends into the drum and is connected to the first dual-media nozzle.

[0011] The main pipeline is sequentially equipped with a second pneumatic ball valve, a gear pump, a third pneumatic ball valve, a filter, a pressure reducing valve, a flow meter, a pneumatic diaphragm valve, and a sixth pneumatic ball valve.

[0012] A first branch pipe connected in parallel with the main pipe is provided between the second pneumatic ball valve and the third pneumatic ball valve. A second branch pipe connected in parallel with the main pipe is provided at the front end of the sixth pneumatic ball valve, and the other end of the second branch pipe extends into the roller and connects to the second dual-medium nozzle.

[0013] A first overflow pipe is connected to both ends of the gear pump, and a first overflow valve is installed on the first overflow pipe;

[0014] The first branch pipeline is sequentially equipped with a fourth pneumatic ball valve, a vane pump, and a fifth pneumatic ball valve;

[0015] A seventh pneumatic ball valve is installed on the second branch pipeline.

[0016] Furthermore, a first pneumatic ball valve is installed on the softened water pipeline, and a pneumatic angle valve is installed on the steam pipeline.

[0017] Furthermore, a moisture meter is installed at the outlet end of the roller.

[0018] Furthermore, the water addition steps for tobacco under water control include: softened water in the storage tank enters the second dual-media nozzle through a vane pump, filter, pressure reducing valve, flow meter, and pneumatic diaphragm valve for water addition; a moisture meter at the drum outlet monitors the moisture content of the outlet material in real time, and adjusts the flow meter and the opening of the pneumatic diaphragm valve through the controller to adjust the water addition amount; excess softened water is discharged through the second overflow valve next to the vane pump.

[0019] Furthermore, before the step of adding water to the tobacco, there is also a water addition control for the storage tank, including closing the second, third, and sixth pneumatic ball valves and opening the fourth, fifth, and seventh pneumatic ball valves.

[0020] When the first pneumatic ball valve is opened, softened water enters the storage tank. When the load sensor detects that the weight of the water in the storage tank has reached the set weight, the controller sends a signal to the first pneumatic ball valve, which closes and stops adding water.

[0021] Furthermore, it also includes a step of heating the softened water in the storage tank, including the controller sending a signal to the pneumatic angle valve on the steam pipeline, the pneumatic angle valve opening to heat the softened water, and when the temperature sensor detects that the temperature of the softened water in the storage tank has reached the set temperature, the controller sends a signal to the pneumatic angle valve, the pneumatic angle valve closing to stop heating.

[0022] The beneficial effects of this invention are:

[0023] This technical solution, through the installation of an automatic water-adding device on the feeder, utilizes some of the original equipment's feeding devices to construct an automatic water-adding device that meets process requirements. This saves on equipment purchase costs, ensures production continuity, further stabilizes the outlet moisture content of the tobacco leaves, improves the processing resistance and product quality of the tobacco sheets, and provides a strong guarantee for the stability of subsequent processing parameters. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the automatic water addition control device of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Storage tank; 2. Load cell; 3. Temperature sensor; 4. Gear pump; 5. First overflow valve; 6. Vane pump; 7. Second overflow valve; 8. Filter; 9. Pressure reducing valve; 10. Flow meter; 11. Pneumatic diaphragm valve; 12. Roller; 13. Moisture meter; 21. First pneumatic ball valve; 22. Pneumatic angle valve; 23. Second pneumatic ball valve; 24. Third pneumatic ball valve; 25. Fourth pneumatic ball valve; 26. Fifth pneumatic ball valve; 27. Sixth pneumatic ball valve; 28. Seventh pneumatic ball valve. Detailed Implementation

[0027] The technical solutions in the embodiments of the invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The automatic water addition control device and automatic water addition control method of this application are both improvements and improved control methods based on the existing secondary feeding control device.

[0029] The control method of this technical solution is based on an improved automatic water filling control device, specifically, as follows: Figure 1 As shown, the automatic water filling control device of this application includes a storage tank, in which a load sensor and a temperature sensor are installed; a softened water pipe and a steam pipe are respectively connected to the storage tank; one end of the main pipe is connected to the outlet of the storage tank, and the other end extends into the drum and is connected to the first dual-medium nozzle.

[0030] The main pipeline is equipped with a second pneumatic ball valve, a gear pump, a third pneumatic ball valve, a filter, a pressure reducing valve, a flow meter, a pneumatic diaphragm valve, and a sixth pneumatic ball valve in sequence.

[0031] A first branch pipe connected in parallel with the main pipe is provided between the second pneumatic ball valve and the third pneumatic ball valve. A second branch pipe connected in parallel with the main pipe is provided at the front end of the sixth pneumatic ball valve, and the other end of the second branch pipe extends into the roller and connects to the second dual-medium nozzle.

[0032] A first overflow pipe is connected to both ends of the gear pump, and a first overflow valve is installed on the first overflow pipe.

[0033] The first branch pipeline is equipped with a fourth pneumatic ball valve, a vane pump, and a fifth pneumatic ball valve in sequence.

[0034] A seventh pneumatic ball valve is installed on the second branch pipeline.

[0035] A first pneumatic ball valve is installed on the softened water pipeline, and a pneumatic angle valve is installed on the steam pipeline.

[0036] A moisture meter is installed at the outlet end of the drum.

[0037] This invention provides an automatic water addition control method for a secondary feeding process, comprising the following steps:

[0038] S1. In the secondary feeding process, the moisture meter at the drum outlet detects that the moisture content of the tobacco at the drum outlet is lower than the set range and transmits this information to the controller.

[0039] S2. The controller determines the current status of the automatic water filling control device. If the automatic water filling control device is not currently performing a feeding operation, it controls the automatic water filling control device to enter the water filling control state.

[0040] S3. Softened water in the storage tank enters the second dual-media nozzle through a vane pump and flow meter to add water into the drum. A moisture meter monitors the moisture content of tobacco at the drum outlet in real time.

[0041] Once the controller determines that the automatic water filling control device is in the feeding control state, it will directly enter the water filling control state after the feeding operation is completed. The specific feeding operation is existing technology and will only be briefly described in this technical solution.

[0042] Feeding control:

[0043] Close the fourth pneumatic ball valve 25, the fifth pneumatic ball valve 26 and the seventh pneumatic ball valve 28, and open the second pneumatic ball valve 23, the third pneumatic ball valve 24 and the sixth pneumatic ball valve 27.

[0044] The diaphragm-type self-priming pump draws the liquid into the chemical tank, which is equipped with a built-in load sensor for weighing. The weight is displayed on the device. When the liquid reaches the required weight, the diaphragm-type self-priming pump is turned off, and the heated liquid in the chemical tank is poured into the storage tank through the discharge pipeline. The liquid is then fed through the feeding pump, filter, pressure reducing valve, flow meter, and pneumatic diaphragm valve into the first dual-media nozzle (liquid and compressed air).

[0045] Water addition control:

[0046] Close the second pneumatic ball valve 23, the third pneumatic ball valve 24 and the sixth pneumatic ball valve 27, and open the fourth pneumatic ball valve 25, the fifth pneumatic ball valve 26 and the seventh pneumatic ball valve 28.

[0047] When the first pneumatic ball valve 21 is opened, softened water enters the storage tank 1. When the load sensor 2 detects that the weight of the water in the storage tank 1 has reached the set weight, the controller sends a signal to the first pneumatic ball valve 21, and the first pneumatic ball valve 21 closes, stopping the water supply.

[0048] Heating control:

[0049] The controller sends a signal to the pneumatic angle valve 22 on the steam pipeline, and the pneumatic angle valve 22 opens to heat the softened water. When the temperature sensor 3 detects that the temperature of the softened water in the storage tank 1 has reached the set temperature, the controller sends a signal to the pneumatic angle valve 22, and the pneumatic angle valve 22 closes to stop heating.

[0050] When adding water to the blades: the softened water in the storage tank 1 enters the second dual-media nozzle (softened water and compressed air) through the blade pump 6, filter 8, pressure reducing valve 9, flow meter 10, and pneumatic diaphragm valve 11 for water addition. The moisture meter 13 at the outlet of the drum 12 monitors the moisture content of the outlet material in real time, and adjusts the water addition by adjusting the flow meter 10 and controlling the opening of the pneumatic diaphragm valve 11 through the controller. Excess softened water is discharged through the second overflow valve 7 next to the blade pump 6.

[0051] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the present invention should be protected by the present invention.

Claims

1. An automatic water addition control method for a secondary feeding process, characterized in that, Includes the following steps: S1. In the secondary feeding process, the moisture meter at the drum outlet detects that the moisture content of the tobacco sheets at the drum outlet is lower than the set range and transmits this information to the controller. S2. The controller determines the current status of the automatic water filling control device. If the automatic water filling control device is not currently performing a feeding operation, it controls the automatic water filling control device to enter the water filling control state. S3. The softened water in the storage tank enters the second dual-media nozzle through the vane pump and flow meter to add water into the drum. The moisture meter monitors the moisture content of the tobacco at the drum outlet in real time. If the controller determines that the automatic water filling control device is currently in the feeding control state, it will directly enter the water filling control state after the feeding operation is completed. The automatic water filling control device includes a storage tank, in which a load sensor and a temperature sensor are installed; a softened water pipe and a steam pipe are respectively connected to the storage tank; one end of the main pipe is connected to the outlet of the storage tank, and the other end extends into the drum and is connected to the first dual-media nozzle. The main pipeline is sequentially equipped with a second pneumatic ball valve, a gear pump, a third pneumatic ball valve, a filter, a pressure reducing valve, a flow meter, a pneumatic diaphragm valve, and a sixth pneumatic ball valve. A first branch pipe connected in parallel with the main pipe is provided between the second pneumatic ball valve and the third pneumatic ball valve. A second branch pipe connected in parallel with the main pipe is provided at the front end of the sixth pneumatic ball valve, and the other end of the second branch pipe extends into the roller and connects to the second dual-medium nozzle. A first overflow pipe is connected to both ends of the gear pump, and a first overflow valve is installed on the first overflow pipe; The first branch pipeline is sequentially equipped with a fourth pneumatic ball valve, a vane pump, and a fifth pneumatic ball valve; A seventh pneumatic ball valve is installed on the second branch pipeline; The water addition process for tobacco sheets under water control includes: softened water in the storage tank enters the second dual-media nozzle through a vane pump, filter, pressure reducing valve, flow meter, and pneumatic diaphragm valve for water addition; the moisture meter at the drum outlet monitors the moisture content of the outlet material in real time, and adjusts the flow meter and the opening of the pneumatic diaphragm valve through the controller to adjust the water addition amount; excess softened water is discharged through the second overflow valve next to the vane pump. Before the step of adding water to the tobacco sheet, the process also includes water control for adding water to the storage tank, including closing the second, third, and sixth pneumatic ball valves and opening the fourth, fifth, and seventh pneumatic ball valves. When the first pneumatic ball valve is opened, softened water enters the storage tank. When the load sensor detects that the weight of the water in the storage tank has reached the set weight, the controller sends a signal to the first pneumatic ball valve, which closes and stops adding water.

2. The automatic water addition control method for the secondary feeding process according to claim 1, characterized in that, A first pneumatic ball valve is installed on the softened water pipeline, and a pneumatic angle valve is installed on the steam pipeline.

3. The automatic water addition control method for the secondary feeding process according to claim 1, characterized in that, A moisture meter is installed at the outlet end of the drum.

4. The automatic water addition control method for the secondary feeding process according to claim 1, characterized in that, It also includes a step of heating the softened water in the storage tank, which involves the controller sending a signal to the pneumatic angle valve on the steam pipeline, causing the pneumatic angle valve to open and heat the softened water. When the temperature sensor detects that the temperature of the softened water in the storage tank has reached the set temperature, the controller sends a signal to the pneumatic angle valve, causing the pneumatic angle valve to close and stop heating.

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