Tobacco stem cleaning on-line control system

Abstract

The invention discloses a tobacco stem cleaning on-line control system, which has the main design concept that tobacco stem cleaning equipment is dynamically controlled on line through tobacco stem cleanliness on-line detection, cleaning water circulation treatment, condensate water heating and tobacco stem cleaning on-line control strategies, and on the basis of ensuring the cleaning cleanliness, the tobacco stem cleaning equipment can be automatically controlled. The water level and the turbidity of the stem washing water in the stem washing device can be adjusted in real time in the process, it is guaranteed that the water of the stem washing device reaches the standard, and the quality of the stem washing water can be synchronously regulated and controlled according to the clean value of regular spot check of the washed tobacco stems. According to the method, a detectable and controllable stem washing water solution idea is provided for cigarette production enterprises, adjustment of stem washing operation can be directly guided through the cleaned tobacco stem clean value subjected to online spot check, energy consumption is effectively and remarkably controlled, and then an industry blank is filled for cigarette production.

Description

Technical Field

[0001] The invention relates to the field of cigarette manufacturing, and in particular to an online control system for cleaning tobacco stems. Background Art

[0002] Cigarette companies lack the means and methods to detect cleanliness in the tobacco stem cleaning process, and are unable to achieve online control of the cleanliness of tobacco stem cleaning.

[0003] Specifically, ensuring the cleanliness of tobacco stem washing has always been a problem that has plagued the stem production line. Due to the lack of detection methods and online control methods for the cleanliness of washed tobacco stems, the stem washing water can only be replaced by batch shutdown. In the tobacco stem cleaning and moistening process, cigarette manufacturers have always used the method of replacing the stem washing water for each batch or each shift. During the production process, only the liquid level of the stem washing equipment is monitored, and water is replenished when the liquid level is lower than the low level. Regardless of the turbidity of the stem washing water, it is replaced at the end of each shift. This not only wastes water resources, but also wastes heating steam to a certain extent. In addition, there is no online detection method and method for the cleanliness of washed tobacco stems, and it is impossible to control the production of stem washing equipment through the cleanliness value of washed tobacco stems. In addition, frequent shutdowns to change water and heat hot water also reduce production efficiency. Summary of the invention

[0004] In view of the above, the present invention aims to provide an online control system for tobacco stem cleaning to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention provides an online control system for tobacco stem cleaning, comprising: a cleaning system control device, an online cleanliness sampling and detection device, a tobacco stem cleaning device, and a cleaning water pretreatment device; the tobacco stem cleaning device is connected to the inlet of the cleaning water pretreatment device through a sewage pump, and the outlet of the cleaning water pretreatment device is connected to the tobacco stem cleaning device through a circulation pump;

[0007] At least a water temperature sensor, a water level sensor, and a turbidity sensor are installed on the tobacco stem cleaning device;

[0008] The cleaning water pretreatment device comprises: a water tank, which is divided into a primary sedimentation and filtration section, a secondary sedimentation and filtration section, and a water treatment, blending and heating section;

[0009] Wherein, the sewage inlet connected to the sewage pump is located above the primary sedimentation and filtration section, a primary filter is provided between the primary sedimentation and filtration section and the secondary sedimentation and filtration section, and a secondary filter is provided between the secondary sedimentation and filtration section and the water treatment blending and heating section; an intrusive condensing water coil and a water outlet connected to the circulating pump are installed below the water treatment blending and heating section; one end of the intrusive condensing water coil is connected to a condensing water inlet and outlet joint for connecting to the workshop condensing water recovery pipeline; and a tap water inlet for blending and replenishing is also installed above the water treatment blending and heating section;

[0010] The cleaning system control device is used to control the tobacco stem cleaning equipment and the cleaning water pretreatment device to perform stem washing operations and circulating replenishment of cleaning water according to the water level signal and / or turbidity signal in the tobacco stem cleaning equipment, or according to the cleanliness data of the washed tobacco stems fed back by the cleanliness online sampling and detection device.

[0011] In at least one possible implementation, the method of circulating and replenishing the washing water according to the turbidity signal in the tobacco stem washing device includes:

[0012] If it is detected that the turbidity of the cleaning water in the tobacco stem cleaning equipment does not meet the preset threshold, the online circulation treatment process of the cleaning water is started: the sewage pump is turned on to discharge the sewage from the tobacco stem cleaning equipment into the cleaning water pretreatment device; at the same time, the circulation pump is turned on to inject the water treated by the cleaning water pretreatment device into the tobacco stem cleaning equipment.

[0013] In at least one possible implementation, the method of controlling the tobacco stem washing equipment and the washing water pretreatment device to perform the stem washing operation and the washing water circulation replenishment according to the cleanliness data of the washed tobacco stems includes:

[0014] When the cleanliness value of the washed tobacco stems is within a preset first interval, detecting whether the turbidity of the washing water in the tobacco stem washing device meets the standard;

[0015] If the standard is met, the ultrasonic cleaning auxiliary mechanism is turned on for auxiliary cleaning;

[0016] If the standard is not met, the online circulation treatment process of the cleaning water is started.

[0017] In at least one possible implementation, the method of controlling the tobacco stem washing equipment and the washing water pretreatment device to circulate and replenish the washing water according to the cleanliness data of the washed tobacco stems includes: when the cleanliness value of the washed tobacco stems is in a preset second interval, directly starting the online circulation treatment process of the washing water.

[0018] In at least one possible implementation, the method of controlling the tobacco stem cleaning equipment and the cleaning water pretreatment device to circulate and replenish the cleaning water according to the cleanliness data of the tobacco stems after washing also includes: when the cleanliness value of the tobacco stems after washing is in a preset third interval, triggering the online control system to shut down and replacing the cleaning water in the tobacco stem cleaning equipment.

[0019] In at least one possible implementation, a first water tank turbidity sensor is installed in the secondary sedimentation and filtration section, and a second water tank turbidity sensor is installed in the water treatment, blending and heating section.

[0020] In at least one possible implementation, a water tank temperature sensor is also provided in the water treatment, blending and heating section.

[0021] In at least one possible implementation, an ultrasonic liquid level sensor is provided above the water treatment, blending and heating section, and an overflow port is arranged at a preset high position of the water treatment, blending and heating section.

[0022] In at least one possible implementation, a sewage outlet is reserved below the primary sedimentation and filtration section, the secondary sedimentation and filtration section, and the water treatment, blending and heating section.

[0023] In at least one possible implementation, a plurality of automatic retrace cleaning nozzle groups are disposed above the primary sedimentation and filtration section, the secondary sedimentation and filtration section, and the water treatment, blending and heating section.

[0024] Compared with the prior art, the main design concept of the present invention is to dynamically control the tobacco stem washing equipment online through online detection of tobacco stem cleanliness, recycling treatment of washing water, heating of condensed water and online control strategy of tobacco stem washing, so as to save water and steam on the basis of ensuring the cleaning cleanliness, and to adjust the water level and turbidity of the washing water in the stem washing equipment in real time during the process to ensure that the water used by the stem washing machine meets the standards, and to simultaneously regulate the water quality of the washing water by regularly sampling the cleanliness value of the washed tobacco stems. The present invention provides a detectable and controllable solution for stem washing water for cigarette production enterprises, and can directly guide the adjustment of stem washing operations through the online sampling of the cleanliness value of the washed tobacco stems, effectively and significantly control energy consumption, and thus fill an industry gap for cigarette production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0026] Figure 1 A schematic diagram of an online control system for tobacco stem cleaning provided by an embodiment of the present invention;

[0027] Figure 2A schematic diagram of a cleaning water pretreatment device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0029] The present invention proposes an embodiment of an online control system for tobacco stem cleaning, specifically, as follows Figure 1 As shown, it includes: a cleaning system control device 100, an online cleanliness sampling and detection device 300, a tobacco stem cleaning device 400 and a cleaning water pretreatment device 500; the tobacco stem cleaning device 400 is connected to the inlet of the cleaning water pretreatment device 500 through a sewage pump, and the outlet of the cleaning water pretreatment device 500 is connected to the tobacco stem cleaning device 400 through a circulation pump;

[0030] At least a water temperature sensor, a water level sensor, and a turbidity sensor are installed on the tobacco stem cleaning device 400;

[0031] Regarding the cleaning water pretreatment device 500, Figure 2 Schematically, it specifically includes: a water tank, which is divided into a primary sedimentation and filtration section, a secondary sedimentation and filtration section, and a water treatment, blending and heating section;

[0032] The sewage inlet 1-1 connected to the sewage pump is located above the primary sedimentation and filtration section. When the sewage level exceeds the baffle between the water tanks, it enters the secondary sedimentation and filtration section through the primary filter screen 1-5 arranged between the primary and secondary sections; in order to carry out real-time monitoring of sewage sedimentation treatment, a first water tank turbidity sensor 1-9 is preferably installed in the secondary sedimentation and filtration section; after the liquid level reaches and is filtered through the secondary filter screen 1-6 arranged between the secondary and water treatment sections, it flows into the water treatment blending and heating section; an intrusive condensation water coil 1-12 and a water outlet 1-3 connected to the circulating pump are installed below the water treatment blending and heating section, wherein one end of the intrusive condensation water coil 1-12 is connected to a condensation water inlet and outlet joint 1-13 for connecting to the workshop condensation water recovery pipeline, so as to facilitate the use of the residual temperature of the condensation water recovered in the workshop to assist the steam in heating the water in this section; and a tap water inlet 1-4 for blending and replenishment is also installed above the water treatment blending and heating section. Of course, in order to improve the pretreatment from sewage to clean water and realize recycling, a water tank temperature sensor 1-10 and a second water tank turbidity sensor 1-11 are also provided in the water treatment blending and heating section; and further, an ultrasonic liquid level sensor 1-8 can also be provided above the water treatment blending and heating section, and in order to avoid high liquid level overflow, an overflow port 1-14 is configured at a preset high position of the water treatment blending and heating section.

[0033] Continuing from the above, a sewage outlet 1-2 is reserved below the three sections of the water tank, and more preferably, a plurality of automatic sweep cleaning nozzle groups 1-7 for cleaning the water tank and related components are arranged above the three sections of the water tank. For reference, automatic sweep cleaning nozzle groups 1-7 are respectively installed at both ends above the primary sedimentation filtration section (which can clean the primary sedimentation filtration section and the primary filter 1-5); an automatic sweep cleaning nozzle group 1-7 for cleaning at least the secondary sedimentation filtration section is installed above the secondary sedimentation filtration section; and an automatic sweep cleaning nozzle group 1-7 for cleaning at least the water treatment blending heating section and the condensing water coil, so that the fully automatic cleaning of the device during regular maintenance is achieved.

[0034] After the online control system is turned on, the water level, temperature and turbidity of the tobacco stem cleaning equipment are first detected. When the established conditions are met (the water level and turbidity of the cleaning water meet the standards, and the water temperature T1 is lower than the process required water temperature Tsp), the tobacco stem cleaning equipment is turned on to pass the material for cleaning.

[0035] When the water level in the tobacco stem washing equipment drops to a predetermined low water level during the production and stem washing process, the circulation pump is turned on to fill the washing equipment with hot water at a constant temperature that meets the water temperature standards; alternatively, if the turbidity of the water in the tobacco stem washing equipment is higher than the set value (such as 5%), the online circulation treatment process for washing water is started: the sewage pump is turned on to discharge the sewage from the bottom of the tobacco stem washing equipment into the washing water pretreatment device, and the circulation pump is turned on at the same time. After pretreatment such as sedimentation, filtration, preheating, and blending, the circulation pump fills the tobacco stem washing equipment with hot water at a constant temperature whose water temperature and water quality meet the preset standards from the washing water pretreatment device; it can be understood that when the water level in the tobacco stem washing equipment meets the standards and the turbidity of the washing water is lower than the set value of 5%, both the circulation pump and the sewage pump are shut down. It can be further pointed out that:

[0036] The working mode of the online control system can be adjusted based on the cleanliness of the washed tobacco stems. Specifically, after the start of the feeding and washing of the stems, the cleanliness value of the washed tobacco stems can be sampled once every certain period (such as 10 minutes) through the cleanliness online sampling and detection device 300. It can also be expanded here that the cleanliness value of the washed tobacco stems can be preset to multiple levels, such as 10 levels: 1-4 is excellent, 5-6 is qualified, 7-8 is unqualified (needs adjustment), and 9-10 is severely contaminated (needs shutdown for treatment).

[0037] Therefore, in some other preferred embodiments of the present invention, the tobacco stem cleaning device 400 is provided with an ultrasonic cleaning auxiliary mechanism 200, and the following preferred solutions for reference are implemented:

[0038] (1) If the cleanliness value of the washed tobacco stems is within a preset first interval (e.g., a qualified intermediate grade, a score of 4.9-5.9, i.e., an intermediate state between excellent and unqualified), the turbidity of the washing water in the tobacco stem washing device 400 is detected to be up to standard;

[0039] If the standard is met, the ultrasonic cleaning auxiliary mechanism 200 is turned on, and the cleanliness of the washed tobacco stems is continuously sampled. If the cleanliness value is detected to be lower (changing toward the predetermined qualified level), the cleaning working state of the system is maintained;

[0040] If the standards are not met, the online circulation treatment process for cleaning water is started, which is similar to the process mentioned above: the sewage pump is turned on to discharge the sewage from the bottom of the cleaning equipment to the pre-treatment water equipment at the rear end, and the circulation pump is turned on at the same time to add constant temperature hot water with qualified water temperature and quality from the pre-treatment water tank to the cleaning equipment. When the water level in the cleaning equipment meets the standards and the turbidity of the cleaning water is lower than the set value of 5%, the circulation pump and the sewage pump are shut down.

[0041] (2) If the cleanliness value of the washed tobacco stems is within the preset second interval (e.g., 6-7.9, representing an unqualified grade), the online circulation treatment process for washing water is directly started: the sewage pump is turned on to discharge sewage from the bottom of the washing equipment to the pre-treatment water equipment at the rear end, and at the same time, the circulation pump is turned on to fill the washing equipment with constant temperature hot water that meets the water temperature and water quality standards from the pre-treatment water tank. When the water level in the washing equipment meets the standards and the turbidity of the washing water is lower than the set value of 5%, the circulation pump and the sewage pump are shut down.

[0042] (3) If the cleanliness value of the tobacco stems after washing is in the preset third interval (e.g., above 8, indicating severe pollution, that is, the water quality in the system can no longer meet the minimum requirement for stem washing), the online control system is triggered to shut down, and the washing water in the tobacco stem washing equipment 400 is replaced and then restarted.

[0043] Finally, it can be added that if the cleanliness value of the washed tobacco stems is found to be below 4.9 (indicating a qualified level), the cleaning system will operate in the normal working state mentioned above.

[0044] In summary, the main design concept of the present invention is to dynamically control the tobacco stem washing equipment online through online detection of tobacco stem cleanliness, recycling treatment of washing water, heating of condensed water and online control strategy of tobacco stem washing, so as to save water and steam on the basis of ensuring the cleaning cleanliness, and to adjust the water level and turbidity of the washing water in the stem washing equipment in real time during the process to ensure that the water used by the stem washing machine meets the standards, and to simultaneously control the water quality of the stem washing water by regularly sampling the cleanliness values ​​of the washed tobacco stems. The present invention provides a detectable and controllable solution for stem washing water for cigarette production enterprises, and can directly guide the adjustment of stem washing operations through the online sampling of the cleanliness values ​​of the washed tobacco stems, effectively and significantly control energy consumption, and thus fill an industry gap for cigarette production.

[0045] If the expressions expressing orientation are mentioned in the embodiments of the present invention, they are relative concepts based on the embodiments. In addition, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c can be single or multiple.

[0046] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched into a variety of equivalent schemes by those skilled in the art without departing from or changing the design ideas and technical effects of the present invention; therefore, the present invention is not limited to the scope of implementation shown in the drawings, and all changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the specification and drawings, should be within the protection scope of the present invention.

Claims

1. A tobacco stem cleaning online control system, characterized in that: include: Cleaning system control device, cleanliness online sampling and detection device, tobacco stem cleaning equipment and cleaning water pretreatment device; The tobacco stem cleaning device is connected to the inlet of the cleaning water pretreatment device via a sewage pump, and the outlet of the cleaning water pretreatment device is connected to the tobacco stem cleaning device via a circulation pump; At least a water temperature sensor, a water level sensor, and a turbidity sensor are installed on the tobacco stem cleaning device; The cleaning water pretreatment device comprises: a water tank, which is divided into a primary sedimentation and filtration section, a secondary sedimentation and filtration section, and a water treatment, blending and heating section; Wherein, the sewage inlet connected to the sewage pump is located above the primary sedimentation and filtration section, a primary filter is provided between the primary sedimentation and filtration section and the secondary sedimentation and filtration section, and a secondary filter is provided between the secondary sedimentation and filtration section and the water treatment blending and heating section; an intrusive condensing water coil and a water outlet connected to the circulating pump are installed below the water treatment blending and heating section; one end of the intrusive condensing water coil is connected to a condensing water inlet and outlet joint for connecting to the workshop condensing water recovery pipeline; and a tap water inlet for blending and replenishing is also installed above the water treatment blending and heating section; The cleaning system control device is used to control the tobacco stem cleaning equipment and the cleaning water pretreatment device to perform stem washing operations and circulating replenishment of cleaning water according to the water level signal and / or turbidity signal in the tobacco stem cleaning equipment, or according to the cleanliness data of the washed tobacco stems fed back by the cleanliness online sampling and detection device.

2. The tobacco stem cleaning online control system according to claim 1, characterized in that: Methods for circulating and replenishing washing water based on turbidity signals in tobacco stem washing equipment include: If it is detected that the turbidity of the cleaning water in the tobacco stem cleaning equipment does not meet the preset threshold, the online circulation treatment process of the cleaning water is started: the sewage pump is turned on to discharge the sewage from the tobacco stem cleaning equipment into the cleaning water pretreatment device; at the same time, the circulation pump is turned on to inject the water treated by the cleaning water pretreatment device into the tobacco stem cleaning equipment.

3. The tobacco stem cleaning online control system according to claim 1, characterized in that: According to the cleanliness data of washed tobacco stems, the methods of controlling the tobacco stem washing equipment and the washing water pretreatment device to perform stem washing operations and circulate and replenish washing water include: When the cleanliness value of the washed tobacco stems is within a preset first interval, detecting whether the turbidity of the washing water in the tobacco stem washing device meets the standard; If the standard is met, the ultrasonic cleaning auxiliary mechanism is turned on for auxiliary cleaning; If the standard is not met, the online circulation treatment process of the cleaning water is started.

4. The tobacco stem cleaning online control system according to claim 3, characterized in that: The method of controlling the tobacco stem washing equipment and the washing water pretreatment device to circulate and replenish the washing water according to the cleanliness data of the washed tobacco stems includes: when the cleanliness value of the washed tobacco stems is in a preset second interval, directly starting the online circulation treatment process of the washing water.

5. The tobacco stem cleaning online control system according to claim 4, characterized in that: The method of controlling the tobacco stem cleaning equipment and the cleaning water pretreatment device to circulate and replenish the cleaning water based on the cleanliness data of the tobacco stems after washing also includes: when the cleanliness value of the tobacco stems after washing is in a preset third interval, triggering the online control system to shut down and replacing the cleaning water in the tobacco stem cleaning equipment.

6. The tobacco stem cleaning online control system according to claim 1, characterized in that: A first water tank turbidity sensor is installed in the secondary sedimentation and filtration section, and a second water tank turbidity sensor is installed in the water treatment, blending and heating section.

7. The tobacco stem cleaning online control system according to claim 1, characterized in that: A water tank temperature sensor is also provided in the water treatment blending and heating section.

8. The tobacco stem cleaning online control system according to claim 1, characterized in that: An ultrasonic liquid level sensor is also provided above the water treatment blending and heating section, and an overflow port is arranged at a preset high position of the water treatment blending and heating section.

9. The tobacco stem cleaning online control system according to any one of claims 1 to 8, characterized in that: Sewage outlets are reserved below the primary sedimentation and filtration section, the secondary sedimentation and filtration section, and the water treatment blending and heating section.

10. The tobacco stem washing online control system according to any one of claims 1 to 8, characterized in that: A plurality of automatic backsweeping cleaning nozzle groups are arranged above the primary sedimentation and filtration section, the secondary sedimentation and filtration section, and the water treatment blending and heating section.

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