CN115067531B - Method and system for monitoring operation state of vacuum damping machine - Google Patents
Method and system for monitoring operation state of vacuum damping machine Download PDFInfo
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- CN115067531B CN115067531B CN202210753290.1A CN202210753290A CN115067531B CN 115067531 B CN115067531 B CN 115067531B CN 202210753290 A CN202210753290 A CN 202210753290A CN 115067531 B CN115067531 B CN 115067531B
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
Abstract
The invention provides a method and a system for monitoring the running state of a vacuum damping machine, wherein the method comprises the following steps: setting valve in-place detection equipment on each movable control valve for detecting the opening and closing states of each valve; detecting running currents of the water supply pump, the drainage pump, the vacuum pump and the running motor, comparing current information detected in real time with a pre-stored normal current value, and giving a fault alarm when the current information exceeds a range; setting a temperature sensor on each water pipeline, and giving an alarm of water temperature over-high when the drainage temperature is greater than a set temperature threshold value; and a pressure sensor is arranged on the water outlet side of each water pump so as to detect the circulating water pressure of each water pump, and the circulating water pressure detected in real time is compared with a preset pressure value, so that fault alarm is carried out when the circulating water pressure exceeds a set range. The invention can improve the detection efficiency and the production efficiency of the equipment and reduce the labor cost.
Description
Technical Field
The invention relates to the technical field of cigarette equipment monitoring, in particular to a method and a system for monitoring the running state of a vacuum damping machine.
Background
The vacuum damping machine is one of important host equipment on a tobacco leaf shredding production line, and the main working principle is that a mechanical water ring pump and a steam jet pump are adopted to work in stages, the box body is vacuumized, after the vacuum degree in the box body reaches the process standard, the tobacco leaf bag in the box body is subjected to damping and humidifying treatment in a box body bottom damping mode, and the tobacco leaf is promoted to fully absorb moisture in a pressure maintaining stage, so that the tobacco leaf full damping effect is achieved. The maintenance mode of the current vacuum damping machine is manual regular shutdown inspection and maintenance, the operation condition of each stage of key components in the equipment cannot be mastered in real time when the equipment is operated, particularly when the equipment breaks down suddenly, the fault position cannot be rapidly and accurately determined, all possibly affected devices and systems are always checked one by one, a great deal of manpower, energy and time are consumed, and the production is even affected when serious.
Disclosure of Invention
The invention provides a method and a system for monitoring the running state of a vacuum damping machine, which solve the problems that the existing vacuum damping machine lacks monitoring means in running, and the fault diagnosis is time-consuming and labor-consuming, and can improve the detection efficiency and the production efficiency of equipment and reduce the labor cost.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for monitoring the running state of a vacuum damping machine comprises the following steps:
setting valve in-place detection equipment on each movable control valve for detecting the opening and closing states of each valve;
detecting running currents of the water supply pump, the drainage pump, the vacuum pump and the running motor, comparing current information detected in real time with a pre-stored normal current value, and giving a fault alarm when the current information exceeds a range;
setting a temperature sensor on each water pipeline, and giving an alarm of water temperature over-high when the drainage temperature is greater than a set temperature threshold value;
and a pressure sensor is arranged on the water outlet side of each water pump so as to detect the circulating water pressure of each water pump, and the circulating water pressure detected in real time is compared with a preset pressure value, so that fault alarm is carried out when the circulating water pressure exceeds a set range.
Preferably, the method further comprises:
vibration sensors are arranged on the vacuum pump and the steam jet pump to detect vibration quantity, and an alarm is given when the vibration quantity is larger than a set amplitude.
Preferably, the method further comprises:
and arranging water flow meters in the water pipes to detect water flow in the pipelines, judging whether the water supply quantity exceeds the preset flow according to the water flow of the water pipes, and giving an alarm if the water supply quantity exceeds the preset flow.
Preferably, the method further comprises:
and arranging steam flow meters on pipelines of the primary steam jet pump and the secondary steam jet pump to detect steam flow and steam pressure, judging whether steam power meets the evacuation requirement in the evacuation process, and giving an alarm if not.
Preferably, the method further comprises:
setting a PLC (programmable logic controller) to acquire and store signals of in-place detection signals of valves, current detection signals of motors, water temperature, water pressure and water flow detection signals of water pipes, steam flow detection signals and vibration detection signals so as to determine the running states of key components of each process stage;
the correct state corresponding to the digital quantity signals in different process stages is directly written into a data block to be used as digital quantity standard state data;
and (3) after invalid and interference data are removed, the normal state data corresponding to the analog signals acquired in real time are stored in historical data, and correct state data intervals of the analog signals in different process stages are obtained as an analog standard state database by automatically calculating the historical data according to 0.95 confidence intervals.
Preferably, the method further comprises:
uploading the digital quantity state data and the analog quantity standard state data to an upper computer, and establishing a standard state database and an early warning information database of key components of each process stage to realize the visualization of fault early warning information.
The invention also provides an operation system of the vacuum damping machine, which uses the monitoring method, and comprises the following steps: the system comprises a vacuumizing system, a humidifying system, a cooling water circulating system and an electric control system;
after the tobacco package enters the vacuum moisture regain box body, the box body is closed, and the vacuumizing system vacuumizes the box body;
after the vacuum degree in the box body meets the process standard requirement, the moistureproof system sprays atomized water into the box body, then the box body is subjected to pressure maintaining for a period of time, after the tobacco leaves fully absorb water, the electric control system opens a broken air valve of the box body of the moistureproof machine, so that the air pressure in the box body is increased to be consistent with the external air pressure, a box door is opened, and the tobacco package is output from the box body;
the cooling water circulation system cools the equipment of the vacuumizing system so as to ensure the vacuumizing effect.
Preferably, the vacuum pumping system comprises: the system comprises a first-stage steam jet pump, a second-stage steam jet pump, a third-stage pump, a fourth-stage pump, a first condenser and a second condenser;
and the primary steam jet pump pumps the steam out of the box body of the moisture regaining machine, the steam is cooled by the first condenser, the steam is sent into the second condenser by the secondary steam jet pump for cooling again, and the water formed after cooling is discharged into the vacuum drainage box by the tertiary pump and/or the quaternary pump.
Preferably, the cooling water circulation system includes: the device comprises a circulating water tank, a circulating pump, a water supply pump, a drainage pump and a cooling tower;
the vacuum drainage box is connected with the cooling tower through a drainage pipeline, the drainage pipeline is provided with the drainage pump, the cooling tower is connected with the circulating water tank through a circulating pipeline, the circulating pump is arranged on the circulating pipeline, the circulating water tank is respectively connected with the first condenser and the second condenser through a water supply pipeline, and the water supply pump is arranged on the water supply pipeline.
Preferably, the electronic control system includes: the system comprises a PLC controller, a temperature sensor, a pressure sensor, a current detection sensor and valve in-place detection equipment;
the PLC is respectively connected with the temperature sensor, the pressure sensor, the current detection sensor and the valve in-place detection equipment in a signal manner;
the valve in-place detection equipment is arranged on each movable control valve and is used for detecting the opening and closing states of each valve;
the current detection sensor is used for detecting the running current of the water supply pump, the drainage pump, the vacuum pump and the running motor;
the temperature sensors are arranged on the water pipelines and are used for detecting the water temperature in the pipelines;
the pressure sensor is arranged on the water outlet side of each water pump so as to detect the circulating water pressure of each water pump.
The invention provides a method and a system for monitoring the running state of a vacuum damping machine, which are characterized in that detection devices such as valve in-place detection, current detection elements, temperature sensors, pressure sensors and the like are added to key components and systems, so that the whole state of the whole working period of the vacuum damping machine is monitored, and the whole state is compared with an established standard state database in real time, and the functions of early warning and accurate positioning of faults during the running of equipment are realized. The problems that the operation of the existing vacuum damping machine lacks a monitoring means, and time and labor are wasted in fault diagnosis are solved, the detection efficiency and the production efficiency of equipment can be improved, and the labor cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram of a method for monitoring the operation state of a vacuum damping machine.
Fig. 2 is a schematic diagram of a vacuum pumping system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a cooling water circulation system according to an embodiment of the present invention.
Detailed Description
In order to make the solution of the embodiment of the present invention better understood by those skilled in the art, the embodiment of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
Aiming at the problems that a large amount of manpower is needed to detect when the current vacuum damping machine operates and is used for maintenance, and fault diagnosis is time-consuming and labor-consuming. The invention provides a method and a system for monitoring the running state of a vacuum damping machine, which solve the problems that the existing vacuum damping machine lacks monitoring means in running, and the fault diagnosis is time-consuming and labor-consuming, and can improve the detection efficiency and the production efficiency of equipment and reduce the labor cost.
As shown in fig. 1, a method for monitoring the operation state of a vacuum damping machine includes:
s1: setting valve in-place detection equipment on each movable control valve for detecting the opening and closing states of each valve;
s2: detecting running currents of the water supply pump, the drainage pump, the vacuum pump and the running motor, comparing current information detected in real time with a pre-stored normal current value, and giving a fault alarm when the current information exceeds a range;
s3: setting a temperature sensor on each water pipeline, and giving an alarm of water temperature over-high when the drainage temperature is greater than a set temperature threshold value;
s4: and a pressure sensor is arranged on the water outlet side of each water pump so as to detect the circulating water pressure of each water pump, and the circulating water pressure detected in real time is compared with a preset pressure value, so that fault alarm is carried out when the circulating water pressure exceeds a set range.
Specifically, each dynamic control valve of the vacuum damping machine is added to a position detection device, each motor is added with a current detection element, each damping water and circulating water is added with a temperature sensor, each water pipeline is added with a pressure sensor, and a mechanical water ring pump pipeline is added with a pressure sensor. The system is used for detecting whether the water pump is normal or not, firstly collecting the circulating water pressure under normal operation, comparing the real-time pressure during operation with the stored normal pressure information, and giving fault alarm if the real-time pressure exceeds the range. When the water pressure fluctuation is large, both the water supply flow and the water discharge flow are affected, and when the water supply flow is small, the evacuation is affected. The pressure sensor is also used for collecting the vacuum degree of the inlet of the water ring vacuum pump, and the vacuum degree in the tank can be changed along with the change of the pressure of the pump port. Whether the vacuum pump works normally or not is judged by analyzing the differential pressure value of the tank pressure and the pump port pressure, and whether the problem of the evacuation system or the problem of the tank sealing is judged when the evacuation cannot reach the preset vacuum degree. The temperature sensor collects the drainage temperature of the deliquesced water and the circulating water, and when the steam pressure is in a normal range, if the drainage temperature is too high, the temperature sensor indicates that the water inflow is opened little or the water inflow temperature is too high, and a corresponding early warning prompt is sent out at an operation interface. The method can solve the problems that the operation of the existing vacuum damping machine lacks a monitoring means, and the fault diagnosis is time-consuming and labor-consuming, can improve the detection efficiency and the production efficiency of equipment, and reduces the labor cost.
The method further comprises the steps of:
s5: vibration sensors are arranged on the vacuum pump and the steam jet pump to detect vibration quantity, and an alarm is given when the vibration quantity is larger than a set amplitude.
The vibration sensor is used for collecting vibration quantity of the water ring vacuum pump and the steam jet pump during working, and comparing the vibration quantity collected in real time with the vibration quantity stored in the database to judge whether the working state of the vacuum pump is normal or not.
The method further comprises the steps of:
s6: and arranging water flow meters in the water pipes to detect water flow in the pipelines, judging whether the water supply quantity exceeds the preset flow according to the water flow of the water pipes, and giving an alarm if the water supply quantity exceeds the preset flow.
The method further comprises the steps of:
s7: and arranging steam flow meters on pipelines of the primary steam jet pump and the secondary steam jet pump to detect steam flow and steam pressure, judging whether steam power meets the evacuation requirement in the evacuation process, and giving an alarm if not.
The method further comprises the steps of:
s8: setting a PLC (programmable logic controller) to acquire and store signals of in-place detection signals of valves, current detection signals of motors, water temperature, water pressure and water flow detection signals of water pipes, steam flow detection signals and vibration detection signals so as to determine the running states of key components of each process stage;
s9: the correct state corresponding to the digital quantity signals in different process stages is directly written into a data block to be used as digital quantity standard state data;
s10, normal state data corresponding to analog signals acquired in real time are removed, invalid and interference data are saved in historical data, and correct state data intervals of the analog signals in different process stages are obtained through automatic calculation of the historical data according to 0.95 confidence intervals and are used as analog standard state databases.
Specifically, different data blocks are respectively established in a PLC program according to different data types, mainly including digital quantity types, and corresponding to valve in-place detection signals; analog quantity type data respectively correspond to a motor current range, a water temperature range, a water pressure range, a water flow range, a steam pressure range, a steam flow range, a vibration quantity range and the like, and are distinguished according to different process stages.
And (3) directly writing the correct state of each valve into a data block as digital standard state data in different process stages through analysis on the digital quantity signal.
And establishing a historical database for the analog quantity data types, collecting normal state data of each stage in real time in the running process of the equipment, and storing the data into the historical data after invalid and interference data are removed. The correct state data interval of each analog signal in different process stages is obtained by automatically calculating the historical data according to the confidence interval of 0.95 and is used as an analog standard state database.
The analog data standard state database has an automatic updating function. By starting the function of automatically updating the standard database, the PLC automatically collects the data at the moment, updates the historical database and recalculates the historical database to be used as a new standard state database. And the accuracy requirement of the standard state database is met when different seasons and climates are met.
The method further comprises the steps of:
s11: uploading the digital quantity state data and the analog quantity standard state data to an upper computer, and establishing a standard state database and an early warning information database of key components of each process stage to realize the visualization of fault early warning information.
In practical application, the motor with current exceeding the range prompts that the current of a certain motor is abnormal, equipment to be checked is needed, and the motor is not started, and the motor line is checked.
The steam flow used by the primary steam jet pump, the secondary steam jet pump and the damping steam is out of range, and the out-of-range components are prompted to show that the primary pump steam flow is abnormal, whether a valve or a nozzle is blocked or not is checked, whether the secondary pump steam flow is abnormal, whether the valve or the nozzle is blocked or not is checked, the damping steam is excessively opened, the damping steam is excessively small, the damping steam flow is abnormal, and whether the valve or the positioning valve is blocked or not is checked.
The water flow of the water supply pump, the drainage pump and the circulating water pump exceeds the range, and the water flow is prompted to be excessively large or small in the first water flow, excessively large or small in the second water flow, abnormal in the water supply pump, normal in operation and undetected in the flow, and abnormal in the drainage pump and normal in operation and undetected in the flow.
In the vacuumizing stage, the running time of step-by-step vacuumizing exceeds the range, and prompts that the three/four-stage vacuumizing overtime, the sealing condition of the box body or the three/four-number water flow rate is checked, the two-stage vacuumizing overtime, the sealing condition of the box body or the circulating water consumption is checked, the first-stage vacuumizing overtime, the sealing condition of the box body or the circulating water consumption is checked, the pressure maintaining of the box body is abnormal, and the sealing condition of the box body is checked.
The valve state is abnormal, and a prompt is that a certain valve state is abnormal, please check.
The vibration quantity of the mechanical water ring pump exceeds the range, and the abnormal vibration quantity of a certain water ring pump is prompted to check the running condition of equipment.
The temperature or pressure of the steam pipeline or the water pipeline exceeds the range, and the temperature abnormality of a certain pipeline, the pipeline inspection request and the pipeline pressure abnormality request are prompted.
Therefore, the method and the system for monitoring the operation state of the vacuum damping machine provided by the invention have the advantages that the correct states of all key components and the system operation condition of the vacuum damping machine are established in a PLC bottom program in a plurality of data block storage modes through all process stages after the statistical analysis equipment is started, and a standard database is established and is used as a reference standard of a self-diagnosis system. And in the running process of the equipment, key components and system running states of all process stages are collected in real time, compared with standard states, abnormal conditions occur, alarm prompts are sent out, and fault points are accurately positioned.
The invention also provides an operation system of the vacuum damping machine, which uses the monitoring method, and comprises the following steps: the system comprises a vacuumizing system, a humidifying system, a cooling water circulating system and an electric control system.
After the tobacco package enters the vacuum moisture regain machine box body, the box body is closed, and the vacuumizing system vacuumizes the box body. After the vacuum degree in the box body meets the process standard requirement, the moistureproof system sprays atomized water into the box body, then the box body is subjected to pressure maintaining for a period of time, after the tobacco leaves fully absorb water, the electric control system opens the air breaking valve of the box body of the moistureproof machine, so that the air pressure in the box body is increased to be consistent with the external air pressure, the box door is opened, and the tobacco package is output from the box body. The cooling water circulation system cools the equipment of the vacuumizing system so as to ensure the vacuumizing effect.
Further, as shown in fig. 2, the vacuum pumping system includes: a first-stage steam jet pump 1, a second-stage steam jet pump 2, a third-stage pump 3, a fourth-stage pump 4, a first condenser and a second condenser. And the primary steam jet pump pumps the steam out of the box body of the moisture regaining machine, the steam is cooled by the first condenser, the steam is sent into the second condenser by the secondary steam jet pump for cooling again, and the water formed after cooling is discharged into the vacuum drainage box by the tertiary pump and/or the quaternary pump.
Specifically, the vacuum-pumping system of the vacuum damping machine is composed of a primary steam jet pump 1, a secondary steam jet pump 2, a tertiary pump 3, a quaternary pump 4, a first condenser, a second condenser, corresponding pipelines and stop valves thereof, wherein the tertiary pump and the quaternary pump are mechanical water ring pumps, the primary steam jet pump 1 and the secondary steam jet pump 2 are steam jet pumps, and the condensers are positioned behind the corresponding steam jet pumps, play a role in reducing steam into water and are discharged through a water tank. In the vacuumizing process, the pumped air body is pumped from the box body of the damping machine, the first-stage ejector, the first condenser, the second-stage ejector, the second condenser, the third-stage pump/the fourth-stage pump and the vacuumizing, so that the effect of vacuumizing the box body of the damping machine is achieved. In actual operation, the four pumps are sequentially started, specifically, after the four-stage pump and the three-stage pump are started, after the vacuum degree of the box body reaches a first set value, the two-stage pump is started, after the vacuum degree reaches a second set value, the one-stage pump is started, after the vacuum degree of the box body reaches a final third set value, the 4 pumps stop working at the same time, and the vacuumizing work is completed.
As shown in fig. 3, the cooling water circulation system includes: the device comprises a circulating water tank, a circulating pump, a water supply pump, a drainage pump and a cooling tower. The vacuum drainage box is connected with the cooling tower through a drainage pipeline, the drainage pipeline is provided with the drainage pump, the cooling tower is connected with the circulating water tank through a circulating pipeline, the circulating pump is arranged on the circulating pipeline, the circulating water tank is respectively connected with the first condenser and the second condenser through a water supply pipeline, and the water supply pump is arranged on the water supply pipeline.
The electronic control system comprises: the system comprises a PLC controller, a temperature sensor, a pressure sensor, a current detection sensor and valve in-place detection equipment. The PLC controller is respectively connected with the temperature sensor, the pressure sensor, the current detection sensor and the valve in-place detection equipment in a signal mode. The valve in-place detection equipment is arranged on each movable control valve and is used for detecting the opening and closing states of each valve. The current detection sensor is used for detecting running current of the water supply pump, the drainage pump, the vacuum pump and the running motor. The temperature sensors are arranged on the water pipelines and are used for detecting the water temperature in the pipelines. The pressure sensor is arranged on the water outlet side of each water pump so as to detect the circulating water pressure of each water pump.
Therefore, the invention provides an operation system of the vacuum damping machine, which is characterized in that detection devices such as valve in-place detection, current detection elements, temperature sensors, pressure sensors and the like are added to key components and the system, so that the full-state monitoring of the whole working period of the vacuum damping machine is realized, and the full-state monitoring is compared with an established standard state database in real time, so that the functions of early warning and accurate positioning of faults during equipment operation are realized. The problems that the operation of the existing vacuum damping machine lacks a monitoring means, and time and labor are wasted in fault diagnosis are solved, the detection efficiency and the production efficiency of equipment can be improved, and the labor cost is reduced.
While the construction, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, the above description is only a preferred embodiment of the present invention, but the present invention is not limited to the embodiments shown in the drawings, and all changes made according to the concepts of the present invention or modifications as equivalent embodiments are within the scope of the present invention without departing from the spirit covered by the specification and drawings.
Claims (2)
1. The method for monitoring the operation state of the vacuum damping machine is characterized by comprising the following steps of:
setting valve in-place detection equipment on each movable control valve for detecting the opening and closing states of each valve;
detecting running currents of the water supply pump, the drainage pump, the vacuum pump and the running motor, comparing current information detected in real time with a pre-stored normal current value, and giving a fault alarm when the current information exceeds a range;
setting a temperature sensor on each water pipeline, and giving an alarm of water temperature over-high when the drainage temperature is greater than a set temperature threshold value;
the method comprises the steps that a pressure sensor is arranged on the water outlet side of each water pump to detect the circulating water pressure of each water pump, the circulating water pressure detected in real time is compared with a preset pressure value, and fault alarm is carried out when the circulating water pressure exceeds a set range;
vibration sensors are arranged on the vacuum pump and the steam jet pump to detect vibration quantity, and alarming is carried out when the vibration quantity is larger than a set amplitude;
a water flowmeter is arranged in each water pipe to detect the water flow in the pipeline, judge whether the water supply exceeds the preset flow according to the water flow of each water pipe, and alarm if yes;
arranging steam flow meters on pipelines of the primary steam jet pump and the secondary steam jet pump to detect steam flow and steam pressure, judging whether steam power meets the evacuation requirement in the evacuation process, and giving an alarm if not;
setting a PLC (programmable logic controller) to acquire and store signals of in-place detection signals of valves, current detection signals of motors, water temperature, water pressure and water flow detection signals of water pipes, steam flow detection signals and vibration detection signals so as to determine the running states of key components of each process stage;
the correct state corresponding to the digital quantity signals in different process stages is directly written into a data block to be used as digital quantity standard state data;
after invalid and interference data are removed, the data are stored in historical data, and correct state data intervals of each analog signal in different process stages are obtained as analog standard state databases by automatically calculating the historical data according to 0.95 confidence intervals;
uploading the digital standard state data and the analog standard state data to an upper computer, and establishing a standard state database and an early warning information database of key components of each process stage to realize the visualization of fault early warning information.
2. An operating system for a vacuum conditioning machine using the monitoring method of claim 1, comprising: the system comprises a vacuumizing system, a humidifying system, a cooling water circulating system and an electric control system;
the vacuum pumping system comprises: the system comprises a first-stage steam jet pump, a second-stage steam jet pump, a third-stage pump, a fourth-stage pump, a first condenser and a second condenser;
the first-stage steam jet pump pumps steam from the inside of the damping machine box, the first condenser cools the steam, the second-stage steam jet pump sends the steam into the second condenser for cooling again, and the third-stage pump and/or the fourth-stage pump discharges water formed after cooling into the vacuum drainage box;
the cooling water circulation system includes: the device comprises a circulating water tank, a circulating pump, a water supply pump, a drainage pump and a cooling tower;
the vacuum drainage box is connected with a cooling tower through a drainage pipeline, the drainage pipeline is provided with the drainage pump, the cooling tower is connected with a circulating water tank through a circulating pipeline, the circulating pump is arranged on the circulating pipeline, the circulating water tank is respectively connected with the first condenser and the second condenser through a water supply pipeline, and the water supply pipeline is provided with the water supply pump;
the electronic control system comprises: the system comprises a PLC controller, a temperature sensor, a pressure sensor, a current detection sensor and valve in-place detection equipment;
the PLC is respectively connected with the temperature sensor, the pressure sensor, the current detection sensor and the valve in-place detection equipment in a signal manner;
the valve in-place detection equipment is arranged on each movable control valve and is used for detecting the opening and closing states of each valve;
the current detection sensor is used for detecting the running current of the water supply pump, the drainage pump, the vacuum pump and the running motor;
the temperature sensors are arranged on the water pipelines and are used for detecting the water temperature in the pipelines;
the pressure sensor is arranged on the water outlet side of each water pump so as to detect the circulating water pressure of each water pump;
after the tobacco package enters the vacuum moisture regain box body, the box body is closed, and the vacuumizing system vacuumizes the box body;
after the vacuum degree in the box body meets the process standard requirement, the moistureproof system sprays atomized water into the box body, then the box body is subjected to pressure maintaining for a period of time, after the tobacco leaves fully absorb water, the electric control system opens a broken air valve of the box body of the moistureproof machine, so that the air pressure in the box body is increased to be consistent with the external air pressure, a box door is opened, and the tobacco package is output from the box body;
the cooling water circulation system cools the equipment of the vacuumizing system so as to ensure the vacuumizing effect.
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| CN111706499A (en) * | 2020-06-09 | 2020-09-25 | 成都数之联科技有限公司 | Predictive maintenance system and method for vacuum pump and automatic vacuum pump purchasing system |
| CN214471735U (en) * | 2021-03-22 | 2021-10-22 | 河南中烟工业有限责任公司 | Self-diagnosis device for valve of vacuum moisture regaining machine |
| CN216568263U (en) * | 2021-12-15 | 2022-05-24 | 河南中烟工业有限责任公司 | Automatic state detection device for vacuum-pumping system of vacuum damping machine |
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