CN115161135A

CN115161135A - Yeast discharge identification control system in beer fermentation process

Info

Publication number: CN115161135A
Application number: CN202210825758.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shenyang Keaisi Intelligent Technology Co ltd
Current assignee: Shenyang Keaisi Intelligent Technology Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-10-11
Anticipated expiration: 2042-07-13
Also published as: CN115161135B

Abstract

The invention provides a yeast discharge identification control system in a beer fermentation process, which comprises a PLC, a detection element and an execution element, realizes three tasks of cold condensate discharge, yeast recovery and waste yeast discharge or direct waste yeast discharge in the beer fermentation process and timed waste discharge after yeast recovery or direct waste discharge under the combined action, is completed through intelligent program control, realizes unmanned intervention, improves the stability of the beer fermentation quality, realizes full intelligent control of the yeast discharge in the beer fermentation process, improves the stability of the beer fermentation quality and reduces manual labor.

Description

Yeast discharge identification control system in beer fermentation process

Technical Field

The invention belongs to the technical field of beer processing and manufacturing, and particularly relates to a yeast discharge identification control system in a beer fermentation process.

Background

In the process of beer fermentation production, beer yeast with strong cohesiveness is generally adopted, when the degree of fermentation reaches the coacervation point, the yeast in the fermentation liquor is coagulated into floccules and is settled at the bottom of the fermentation tank, and the yeast is in a mud state, so the yeast is commonly called as yeast mud, and the yeast mud which is not recycled is the commonly called waste yeast. Since the yeast paste is stored in the fermentation tank for a longer time, the dead yeast is more "autolyzed", and the bad flavor substances generated by the yeast paste are dissolved in the beer to destroy the flavor of the beer, the waste yeast paste settled at the conical bottom of the fermentation tank needs to be discharged out of the fermentation tank in time so as not to influence the quality of the beer. At present, although the production process and the waste yeast discharge frequency of each large and medium-sized beer production enterprise are different, the beer flavor harm caused by yeast autolysis is avoided by discharging for many times.

At present, the yeast of fermentation process discharges and adopts artifical manual emission, and the manual fermentation tank bottom valve of opening promptly discharges to manual adjustment tank bottoms manual control valve's aperture carries out the manual observation through the sight glass that sets up at the fermentation tank bottom and judges whether reach emission standard (the content of yeast in the emission liquid promptly), judges after the meet the standard when manual observation, closes fermentation tank bottom valve and manual control valve through artifical manual, accomplishes the emission of a yeast.

The fermentation tanks of large-scale beer production plants are more, need artifical frequent yeast operation of discharging, consume a large amount of manpower work, still have different operating personnel simultaneously to judging whether reach emission standard through observing, have great error. Even the problem of forgetting to discharge may occur, making the stability of the fermentation quality of beer difficult to control.

Disclosure of Invention

Aiming at the problems, the invention provides a yeast discharge identification control system in the beer fermentation process, which realizes the full intelligent control of yeast discharge in the beer fermentation process, improves the stability of beer fermentation quality and reduces manual labor.

The purpose of the invention is realized by the following technical scheme:

a system for identifying and controlling yeast discharge in a beer fermentation process comprises:

the detection element is used for stopping yeast discharge signal detection and top water signal detection, and comprises an impedance spectrum sensor, a continuous liquid level sensor, a flowmeter and a proximity switch; the impedance frequency spectrum sensor arranged in the bottom area of the fermentation tank is used for detecting the numerical change of the impedance characteristic coefficient of the discharged liquid in real time and transmitting a real-time numerical change signal to the PLC so as to judge whether the discharge stopping standard parameter is met or not; the impedance spectrum sensor arranged at the inlet areas of the condensed solid tank, the yeast storage tank and the waste yeast tank is used for detecting the numerical value change of the impedance characteristic coefficient of the discharged liquid in the period of water jacking in real time and transmitting a real-time numerical value change signal to the PLC so as to judge whether the standard parameter of stopping water jacking is met or not; the continuous liquid level sensors arranged at the bottoms of the condensed solid tank and the waste yeast tank are used for detecting the liquid level height in the tanks in real time and transmitting real-time continuous liquid level signals to the PLC so as to judge whether the conditions for receiving and discharging liquid are met; the flowmeter is used for measuring the recovery amount of the yeast and transmitting a real-time recovery amount signal to the PLC so as to judge whether a set recovery amount parameter is met; the proximity switch is used for detecting a state signal of opening or closing the valve and transmitting a real-time state signal to the PLC so as to judge whether the opening or closing state of the valve is correct or not;

the PLC is provided with a condition parameter for yeast discharge and a standard parameter for stopping the yeast discharge, and after the condition parameter is judged to be met by the yeast discharge detection signal, the PLC starts a yeast discharge program and controls an execution element to discharge the yeast; and after the impedance spectrum sensor detects that the impedance characteristic coefficient value of the discharged liquid is greater than or equal to the standard parameter for stopping yeast discharge, the PLC stops the yeast discharge program and controls the execution element to stop yeast discharge; wherein the yeast discharge comprises condensed solid discharge, yeast recovery and redundant yeast discharge or direct yeast discharge, and timed yeast discharge after yeast recovery or direct yeast discharge;

the executive component, the executive component includes pump and valve, the pump is including the yeast recovery pump that is used for the yeast to retrieve, be used for with the useless yeast pump of unnecessary yeast mother row in to useless yeast jar, the valve includes the regional tank bottoms three-way valve in fermentation tank bottoms, the regional pneumatic adjusting butterfly valve in fermentation tank bottoms, the row's of setting at fermentation tank bottoms regional condensation solid thing three-way valve, condensation solid thing jar inlet valve, running water top water valve, deoxidation water top water valve, yeast storage tank inlet valve, yeast storage tank entry blowoff valve, yeast recovery pump front valve, useless yeast jar inlet valve, useless yeast pump front valve.

Further, the system comprises a condensed solid discharging module, wherein the module comprises a stop detection sensor which is a condensed solid discharging stop detection sensor arranged on a condensed solid discharging pipeline in the bottom area of the fermentation tank and a stop top water detection sensor arranged on a condensed solid pipeline in the inlet area of the condensed solid tank; the module comprises a first continuous liquid level sensor arranged at the bottom of the condensed solid tank; the valves of the module are a tank bottom three-way valve in the tank bottom area of the fermentation tank, a condensed solid matter discharging three-way valve arranged in the tank bottom area of the fermentation tank, a condensed solid matter tank inlet valve, a pneumatic adjusting butterfly valve in the tank bottom area of the fermentation tank and a tap water top water valve; the condition parameters of the module for discharging the condensed solids comprise the liquid level of the condensed solids tank meeting the condensed solids discharge condition, the fermentation time and the proper opening parameter set by the regulating valve; the standard stopping parameter of the module for the discharge of the condensed solid comprises a standard point impedance characteristic coefficient value for stopping the discharge of the condensed solid and a standard point impedance characteristic coefficient value for stopping the water ejection.

Further, the condensed solid discharging process of the condensed solid discharging module is as follows:

when the PLC judges that the fermentation time and the condensed solid pouring level obtained by the first continuous liquid level sensor simultaneously meet the set condensed solid discharging strip, starting to execute a condensed solid discharging program;

opening a tank bottom three-way valve and a condensed solid discharging three-way valve in the tank bottom area of the fermentation tank, so that an outlet pipeline of the fermentation tank is communicated with a condensed solid discharging pipeline;

opening an inlet valve of the condensed solid tank, opening a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank, and automatically adjusting to a set proper opening degree to slowly discharge the condensed solid at an optimal flow rate;

when an impedance spectrum sensor arranged on a pipeline for discharging solid substances in the bottom area of the fermentation tank detects that the value of the impedance characteristic coefficient of the discharged liquid is larger than or equal to a set value in real time, a pneumatic adjusting butterfly valve and a tank bottom three-way valve in the bottom area of the fermentation tank are closed;

adjusting the opening state of a three-way valve for discharging and condensing solid to enable a tap water top water pipeline and a pipeline for discharging and condensing solid to be in a communication state;

starting a tap water jacking valve, and jacking the condensed solid in the pipeline into a condensed solid tank by using tap water;

when the impedance frequency spectrum sensor arranged at the inlet area of the condensed solid tank detects that the impedance characteristic coefficient value of the liquid in the pipeline is larger than or equal to a set value in real time, the tap water top valve, the condensed solid discharging three-way valve and the inlet valve of the condensed solid tank are closed, and the condensed solid discharging work is finished.

Further, the system comprises a yeast recovery and redundant yeast waste discharge or waste yeast direct waste discharge module, wherein the module comprises a stop detection sensor, a top water stop detection impedance spectrum sensor and a top water stop detection impedance spectrum sensor, wherein the stop detection sensor is a yeast recovery/waste discharge stop detection impedance spectrum sensor arranged on a yeast recovery/waste discharge pipeline in a bottom area of the fermentation tank, the top water stop detection impedance spectrum sensor arranged on a yeast recovery pipeline in an inlet area of the yeast storage tank, and the top water stop detection impedance spectrum sensor arranged on a yeast waste discharge pipeline in the inlet area of the waste yeast tank; the module comprises a second continuous liquid level sensor arranged at the bottom of the waste yeast tank; the module comprises valves which are a tank bottom three-way valve in the bottom area of the fermentation tank, a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank, a deoxygenated water top water valve arranged in the area connected with an inlet pipeline of the fermentation tank, a yeast storage tank inlet valve, a yeast storage tank inlet blow-down valve, a yeast recovery pump front valve arranged in the inlet area of a yeast storage tank on a yeast recovery pipeline, a waste yeast tank inlet valve and a waste yeast pump front valve arranged in the inlet area of a waste yeast tank on a yeast waste discharge pipeline; the module also comprises the flowmeter, wherein the flowmeter is a first flowmeter arranged on the yeast recovery pipeline; the module comprises a yeast recovery pump arranged on a yeast recovery pipeline and a waste yeast pump arranged on a yeast waste discharge pipeline; the condition parameters of yeast recovery and redundant yeast waste discharge or direct waste discharge of waste yeast of the module comprise fermentation sugar degree meeting the yeast recovery condition, yeast propagation algebra, waste yeast tank liquid level, yeast recovery quantity meeting the yeast waste discharge condition and proper opening parameter set by the regulating valve; the standard stopping parameters of yeast recovery and redundant yeast waste discharge or waste yeast direct waste discharge of the module comprise a standard point impedance characteristic coefficient value of yeast recovery/waste discharge stopping discharge and a standard point impedance characteristic coefficient value of stopping top water.

Further, the device also comprises a second flowmeter arranged on the yeast waste discharge pipeline and used for measuring the accumulated amount of the waste yeast.

Further, the yeast recovery and waste yeast discharge or waste yeast direct discharge process comprises the following steps:

when the PLC judges that the fermentation sugar degree and the liquid level of the waste yeast tank obtained by the second liquid level sensor meet the set yeast recovery condition parameters and the yeast propagation algebra is less than or equal to the set value parameters, starting to execute a yeast recovery and redundant yeast waste discharge program;

opening a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank and a tank bottom three-way valve in the bottom area of the fermentation tank so that an outlet pipeline of the fermentation tank is communicated with a yeast recovery pipeline;

opening a front valve of a yeast recovery pump and an inlet valve of a yeast storage tank, starting the yeast recovery pump to start yeast recovery, and automatically adjusting a pneumatic adjusting butterfly valve of the bottom area of the fermentation tank to a set proper opening according to an impedance characteristic coefficient value of discharged liquid detected in real time by a yeast recovery/waste discharge stopping detection impedance spectrum sensor arranged on a yeast recovery/waste discharge pipeline of the bottom area of the fermentation tank so that yeast is discharged at an optimal flow rate;

when the yeast recovery amount measured by the first flowmeter is more than or equal to the yeast amount set value required to be recovered, stopping the yeast recovery pump and closing the inlet valve of the yeast storage tank;

opening a front valve of the waste yeast pump and an inlet valve of the waste yeast tank, starting the waste yeast pump, and discharging the redundant yeast bus into the waste yeast tank;

when the yeast recovery/waste discharge stopping detection impedance spectrum sensor detects that the impedance characteristic coefficient value of the discharged liquid is larger than or equal to a set value, a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank is closed immediately, and the waste yeast pump is stopped;

adjusting the opening state of a tank bottom three-way valve in the tank bottom area of the fermentation tank to enable a deoxygenated water top water pipeline and a yeast recovery and waste discharge pipeline to be in a communicated state, and simultaneously opening a drain valve at an inlet of a yeast storage tank;

opening a top water valve of the deoxygenated water, and ejecting the yeasts in the pipeline to a blowdown valve of an inlet of the yeast storage tank by using the deoxygenated water to discharge into a sewer and a waste yeast tank respectively;

when the impedance characteristic coefficient value of the liquid in the detection pipeline of the impedance spectrum sensor for stopping the detection of the top water on the yeast recovery pipeline is more than or equal to a set value, closing a front valve of the yeast recovery pump and a drain valve at the inlet of the yeast storage tank;

when the impedance characteristic coefficient value of the liquid in the detection pipeline of the impedance spectrum sensor for stopping water jacking detection on the yeast waste discharge pipeline is more than or equal to a set value, closing an inlet valve of the waste yeast tank and a front valve of the waste yeast pump;

and when the yeast recovery pump front valve, the yeast storage tank inlet blow-down valve, the waste yeast tank inlet valve and the waste yeast pump front valve are in a closed state, closing the deoxygenated water top water valve and the tank bottom three-way valve in the bottom area of the fermentation tank, and finishing the yeast recovery and waste discharge of redundant yeast.

When the PLC judges that the fermentation sugar degree and the liquid level of the waste yeast tank meet the set yeast direct waste discharge condition parameters and the propagation algebra of the yeast is greater than the set value parameters, starting to execute a yeast direct waste discharge program;

opening a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank and a tank bottom three-way valve in the bottom area of the fermentation tank, so that an outlet pipeline of the fermentation tank is communicated with a yeast waste discharge pipeline;

opening a front valve of the waste yeast pump and an inlet valve of the waste yeast tank, starting the waste yeast pump to start yeast waste discharge, and automatically adjusting a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank to a set proper opening degree according to the real-time detection of the impedance characteristic coefficient value of the discharged liquid by a yeast recovery/waste discharge stopping detection impedance spectrum sensor arranged on a yeast recovery/waste discharge pipeline in the bottom area of the fermentation tank so as to discharge the waste yeast at an optimal flow rate;

when the yeast recovery/waste discharge stopping detection impedance spectrum sensor detects that the impedance characteristic coefficient value of the discharged liquid is larger than or equal to a set value, closing a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank and stopping a waste yeast pump;

adjusting the opening state of a tank bottom three-way valve in the tank bottom area of the fermentation tank to enable a deoxygenated water top water pipeline and a yeast waste discharge pipeline to be in a communicated state, then opening a deoxygenated water top water valve, and ejecting waste yeast in the pipeline into a waste yeast tank by using deoxygenated water;

when the impedance characteristic coefficient value of the liquid in the pipeline is detected to be larger than or equal to a set value in real time by the impedance spectrum sensor for detecting the top water stopping on the yeast waste discharge pipeline, the inlet valve of the waste yeast tank, the front valve of the waste yeast pump, the deoxygenated water top water valve and the tank bottom three-way valve in the tank bottom area of the fermentation tank are closed, and the direct yeast waste discharge work is finished.

Further, the system comprises a timed waste discharge module after yeast recovery or after direct waste discharge, wherein the module comprises a stop detection sensor, a top water stop detection impedance spectrum sensor and a top water stop detection impedance spectrum sensor, wherein the stop detection sensor is a yeast recovery/waste discharge stop detection impedance spectrum sensor arranged on a yeast recovery/waste discharge pipeline in a bottom area of a fermentation tank, and the top water stop detection impedance spectrum sensor is arranged on a yeast waste discharge pipeline in an inlet area of a waste yeast tank; the module comprises a second continuous liquid level sensor arranged at the bottom of the waste yeast tank; the valves of the module are a tank bottom three-way valve in the tank bottom area of the fermentation tank, a pneumatic adjusting butterfly valve in the tank bottom area of the fermentation tank, an inlet valve of the waste yeast tank, a front valve of the waste yeast pump and a top water valve of deoxygenated water; the module comprises a waste yeast pump arranged on a yeast waste discharge pipeline; the timing waste discharge condition parameters of the module after yeast recovery or direct waste discharge comprise fermentation time meeting yeast waste discharge conditions, liquid level of a waste yeast tank and parameters of proper opening degree set by a regulating valve, and the stopping standard parameters of the module after yeast recovery or direct waste discharge comprise a standard point impedance characteristic coefficient value of yeast recovery/waste discharge stopping discharge and a third standard point impedance characteristic coefficient value of stopping top water.

Further, the timed waste discharge process after yeast recovery or direct waste discharge is as follows:

when the PLC judges that the fermentation time and the liquid level of the waste yeast tank obtained by the second liquid level sensor simultaneously meet the set parameters of the timed waste discharge condition after yeast recovery or after direct waste discharge, starting a timed waste discharge program after yeast recovery or after direct waste discharge;

opening a front valve of a waste yeast pump and an inlet valve of a waste yeast tank, starting the waste yeast pump to start yeast waste discharge, and automatically adjusting a pneumatic adjusting butterfly valve of a bottom area of the fermentation tank to a set proper opening according to the real-time detection of the impedance characteristic coefficient value of the discharged liquid by a yeast recovery/waste discharge stopping detection impedance spectrum sensor arranged on a yeast recovery/waste discharge pipeline of the bottom area of the fermentation tank so as to discharge the waste yeast at the optimal flow rate;

when the impedance characteristic coefficient value of the liquid in the real-time detection pipeline is larger than or equal to a set value by the aid of the top water detection stopping impedance spectrum sensor on the yeast waste discharge pipeline, an inlet valve of the waste yeast tank, a front valve of the waste yeast pump, a deoxygenated water top water valve and a tank bottom three-way valve in a tank bottom area of the fermentation tank are closed, and the timed waste discharge work after the yeast is recycled or directly discharged is finished.

The invention has the beneficial effects that:

1. the sensor is adopted to replace manual observation to judge the discharge stopping standard, so that the accurate judgment of the discharge stopping standard point is realized, and the quality of the beer fermentation process is more stable;

2. the automatic regulating valve and the intelligent control program are configured, so that the flow of the discharged liquid can be regulated according to the impedance characteristic coefficient value of the discharged liquid detected by the sensor in real time, and the situation that fermentation liquor breaks through a yeast layer and flows out due to overlarge flow and too high flow speed, so that the yeast is not completely discharged, more residues are left, and the quality stability of the fermentation process is influenced is prevented;

3. the full intelligent control of yeast discharge in the beer fermentation process is realized, manual operation and intervention are not needed, and manual labor is saved.

Drawings

FIG. 1 is a schematic diagram of a yeast discharge identification control system in a beer fermentation process according to an embodiment of the present invention.

FIG. 2 is a block diagram of a yeast-discharging identification control system for beer fermentation according to an embodiment of the present invention.

FIG. 3 is a flow chart of the condensed solids discharge control of an embodiment of the present invention.

FIG. 4 is a flow chart showing the control of yeast recovery and waste yeast disposal or direct waste yeast disposal in the embodiment of the present invention.

FIG. 5 is a flowchart showing the control of the timed discharge of yeast after recovery or direct discharge in the embodiment of the present invention.

In the figure, 1, a condensed solid discharge stop detection impedance spectrum sensor 2, a first top water stop detection impedance spectrum sensor 3, a yeast storage tank 4, a yeast recovery/waste discharge stop detection impedance spectrum sensor 5, a tank bottom three-way valve 6, a condensed solid discharge three-way valve 7, a yeast recovery pump 8, a first flowmeter 9, a second top water stop detection impedance spectrum sensor 10, a waste yeast pump 11, a second flowmeter 12, a third top water stop detection impedance spectrum sensor 13, a fermentation tank 14, a condensed solid tank 141, a first liquid level sensor 15, a waste yeast tank 151, a second liquid level sensor TV01, a pneumatic adjusting butterfly valve HV01, a deoxidized water top water valve HV02, a yeast recovery pump front valve HV03, a waste yeast pump front valve HV04, a tap water top water valve 05, a condensed solid tank inlet valve 06, a yeast storage tank inlet valve HV07, a yeast storage tank inlet valve HV08, and a waste yeast tank inlet valve.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

According to the requirements of beer fermentation process, condensed solid needs to be discharged for multiple times in the fermentation process, yeast recovery or direct waste discharge is carried out for 1 time, and waste discharge is carried out regularly after yeast recovery or direct waste discharge, for example, waste discharge is carried out for 1 time every 24 hours until the end of beer filtration is finished. Because the volume of a determined fermentation tank and the fermentation liquid amount pumped by saccharification are fixed, according to the waste yeast discharge process requirement, the waste yeast mud settled at the bottom of the fermentation tank is discharged as much as possible to ensure the product quality, and simultaneously, the mixed discharged fermentation liquid amount is reduced as much as possible, namely, the wine loss is reduced, and the production cost is reduced.

However, the background art can know that the current yeast discharging process is finished manually, the accurate judgment of the discharging standard point can not be realized, and the accurate adjustment of the discharging liquid flow can not be realized, so that the stability of the beer fermentation quality is difficult to control, and the manual waste is caused.

Based on this, as shown in fig. 1-2, the present embodiment provides a yeast-discharging identification control system for beer fermentation process, comprising:

the detection element is used for stopping yeast discharge signal detection and top water signal detection, and comprises an impedance spectrum sensor, a continuous liquid level sensor, a flowmeter and a proximity switch; the impedance frequency spectrum sensor arranged in the bottom area of the fermentation tank 13 is used for detecting the numerical change of the impedance characteristic coefficient of the discharged liquid in real time and transmitting a real-time numerical change signal to the PLC so as to judge whether the discharge stopping standard parameter is met or not; the impedance frequency spectrum sensor arranged at the inlet areas of the condensed solid tank 14, the yeast storage tank 3 and the waste yeast tank 15 is used for detecting the numerical value change of the impedance characteristic coefficient of the liquid in the period of water jacking in real time and transmitting a real-time numerical value change signal to the PLC so as to judge whether the standard parameter of water jacking stopping is met or not; the continuous liquid level sensors arranged at the bottoms of the condensed solid tank 14 and the waste yeast tank 15 are used for detecting the liquid level height in the tanks in real time and transmitting real-time continuous liquid level signals to the PLC so as to judge whether the conditions for receiving the discharged liquid are met; the flowmeter is used for measuring the recovery amount of the yeast and transmitting a real-time recovery amount signal to the PLC so as to judge whether a set recovery amount parameter is met; the proximity switch is used for detecting a state signal of opening or closing the valve and transmitting a real-time state signal to the PLC so as to judge whether the opening or closing state of the valve is correct or not.

The PLC is a programmable logic controller, the PLC is provided with a condition parameter for yeast discharge and a standard parameter for stopping the yeast discharge, and after the condition parameter is judged to be met by the yeast discharge detection signal, the PLC starts a yeast discharge program and controls an execution element to discharge the yeast; and after the impedance spectrum sensor detects that the value of the impedance characteristic coefficient of the discharged liquid is greater than or equal to the standard impedance characteristic coefficient set parameter, the PLC stops the yeast discharge program and controls the execution element to stop yeast discharge.

The standard parameter for stopping yeast discharge may be a standard impedance characteristic coefficient setting parameter. The range of the impedance characteristic coefficient is 0-100, and the stronger the impedance characteristic is, the smaller the detected impedance characteristic coefficient is.

It should be noted that the liquid discharged during the yeast discharging process is a mixed liquid of yeast, condensed solid and beer fermentation liquid, the early-stage yeast or condensed solid content is relatively high, and the content of beer fermentation liquid will gradually increase and the content of yeast or condensed solid will gradually decrease along with the discharging. And an impedance spectrum sensor arranged in the bottom area of the fermentation tank detects the impedance characteristic coefficient value of the discharged liquid in real time, and when the impedance characteristic coefficient value is more than or equal to a set value, the yeast discharge is stopped, namely the yeast discharge is finished at this time. Therefore, the yeast discharge of the embodiment includes three processes of condensed solid discharge, yeast recovery and waste yeast discharge or direct waste discharge of waste yeast, and timed waste discharge after yeast recovery or direct waste discharge.

Specifically, the control system can set the condition parameters of the regular waste discharge execution of the condensed solid discharge, the yeast recovery and the waste discharge of redundant yeast or the waste yeast direct discharge, and the yeast recovery or the waste discharge directly into the program of the PLC through an HMI (human machine interface), and when the execution condition is triggered, the system intelligently controls the corresponding pump, valve and identification sensor to detect the signal state to complete the work.

Executive component, executive component includes pump and valve, the pump is including being used for the yeast recovery pump 7 that the yeast was retrieved, be used for with the useless yeast pump 10 of unnecessary yeast mother row in to useless yeast jar, the valve includes tank bottoms three-way valve 5 of fermentation tank bottoms region, the regional pneumatic adjusting butterfly valve TV01 of fermentation tank bottoms, sets up at the regional row condensation solid thing three-way valve 6 of fermentation tank bottoms, condensation solid thing jar inlet valve HV05, running water top water valve HV04, deoxidation top water valve HV01, yeast storage tank inlet valve HV06, yeast storage tank inlet blowoff valve HV07, preceding valve HV02 of yeast recovery pump, useless yeast jar HV inlet valve 08, preceding valve HV03 of useless yeast pump.

The yeast discharge identification control system comprises a PLC, a detection element and an execution element, realizes three tasks of cold condensate discharge, yeast recovery and waste yeast discharge or direct waste discharge of waste yeast and timed waste discharge after yeast recovery or direct waste discharge in the beer fermentation process under the combined action, is completed through intelligent program control, realizes unmanned intervention, and improves the stability of the beer fermentation quality.

As shown in fig. 2, based on the above embodiment, the present invention further provides an embodiment of a yeast discharge identification control system, and fig. 2 is a block diagram of the system structure of the embodiment, specifically, the yeast discharge identification control system of the embodiment may include a condensed solid discharge module, a yeast recovery and excess yeast waste discharge or direct waste yeast discharge module, and a timed waste discharge module after yeast recovery or direct waste discharge.

The module is provided with a detection stopping sensor which is specifically a condensed solid discharge stopping detection impedance spectrum sensor 1 arranged on a condensed solid discharge pipeline at the bottom area of the fermentation tank and a first top water detection stopping impedance spectrum sensor 2 arranged on a condensed solid pipeline at the inlet area of the condensed solid tank; the valves related to the module comprise a tank bottom three-way valve 5 in the bottom area of the fermentation tank, a condensed solid discharging three-way valve 6 arranged in the bottom area of the fermentation tank, a condensed solid inlet valve HV05, a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank and a tap water top water valve HV04; in addition, the module further comprises a first continuous liquid level sensor 141 arranged at the bottom of the condensed solid matter tank; the condition parameters related to the module for discharging the condensed solids comprise the liquid level of the condensed solids tank, fermentation time and proper opening parameters of an adjusting valve, which meet the condition of discharging the condensed solids; wherein, the proper opening parameter of the regulating valve is between 30 percent and 40 percent, and can be determined according to the specific debugging of the volume and the pipe diameter of the actual fermentation tank. The standard parameters of the module for discharging the condensed solids comprise a standard point impedance characteristic coefficient value for stopping discharging the condensed solids and a standard point impedance characteristic coefficient value for stopping water ejection.

It should be noted that the purpose of the first continuous liquid level sensor detecting the liquid level of the condensed solid container in real time is to determine whether there is a space in the condensed solid container for containing the condensed solid to be discharged before starting the condensed solid discharge procedure, and if the liquid level of the condensed solid container is higher than a set parameter, the condition for executing the condensed solid discharge procedure is not met, and the condensed solid discharge can be started only if the liquid level is reduced below a set value.

It should be noted that the purpose of the top water stopping detection is to determine that the residual yeast in the pipeline is topped up cleanly with water and no excess water is wasted, so the impedance characteristic coefficient value of the standard point of the top water stopping detection is constant, wherein the impedance characteristic coefficient value of pure water is 99 to 100, if the set value is 99, and when the detected value is more than or equal to 99, the system stops the top water.

Specifically, as shown in fig. 3, the condensed solid discharge process of the present embodiment is as follows:

when the PLC judges that the liquid level of the condensed solid filling tank and the fermentation time simultaneously meet the set condensed solid discharging condition, starting to execute a condensed solid discharging program;

opening a tank bottom three-way valve 5 and a condensed solid discharging three-way valve 6 in the tank bottom area of the fermentation tank, and communicating the outlet pipeline of the fermentation tank with a condensed solid discharging pipeline;

an inlet valve HV05 of the condensed solid tank is opened, a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank is opened and automatically adjusted to a set proper opening degree, so that the condensed solid is slowly discharged at an optimal flow rate, and the phenomenon that fermented wine liquid flows out after breakdown due to the fact that the flow rate is too high to cause incomplete discharge of the condensed solid is avoided;

when an impedance frequency spectrum sensor 1 arranged on a pipeline for discharging the condensed solid in the bottom area of the fermentation tank detects that the impedance characteristic coefficient value of the discharged liquid is larger than or equal to a set value (the impedance characteristic coefficient value of a standard point of the condensed solid which is obtained through testing and stops discharging), a pneumatic adjusting butterfly valve TV1 and a tank bottom three-way valve 5 in the bottom area of the fermentation tank are closed;

the opening state of the three-way valve 6 for discharging the condensed solid is adjusted to be a state that a top water pipeline is communicated with the condensed solid discharging pipeline;

starting a tap water top valve HV04, and using tap water to push condensed solids in the pipeline to a condensed solid tank;

when the first top water stopping detection impedance spectrum sensor 2 arranged at the inlet area of the condensed solid tank detects that the impedance characteristic coefficient value of the liquid in the pipeline is larger than or equal to a set value (the first standard point impedance characteristic coefficient value of the top water stopping obtained through testing), the tap water top water valve HV04, the condensed solid discharging three-way valve 6 and the condensed solid tank inlet valve HV05 are closed, and the condensed solid discharging work is finished.

The yeast recovery and excess yeast waste discharge or waste yeast direct waste discharge module is used for discharging excess yeast after quantitatively recovering the yeast when the propagation algebra of the yeast is less than or equal to a set value parameter; and when the propagation algebra of the yeast is larger than the set value parameter, directly discharging the waste yeast. The detection stopping sensor arranged in the module comprises a yeast recovery/waste discharge stopping detection impedance spectrum sensor 4 arranged on a yeast recovery/waste discharge pipeline in a bottom area of the fermentation tank, a second top water stopping detection impedance spectrum sensor 9 arranged on the yeast recovery pipeline in an inlet area of the yeast storage tank, and a third top water stopping detection impedance spectrum sensor 12 arranged on the yeast waste discharge pipeline in the inlet area of the waste yeast tank; the module also comprises a second continuous liquid level sensor 151 arranged at the bottom of the waste yeast tank; besides, the valve related to the module comprises a tank bottom three-way valve 5 in the bottom area of the fermentation tank, a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank, a deoxygenated water top water valve HV01, a yeast storage tank inlet valve HV06, a yeast storage tank inlet blowdown valve HV07 and a yeast recovery pump front valve HV02 which are arranged in the yeast storage tank inlet area on the yeast recovery pipeline, and a waste yeast tank inlet valve HV08 and a waste yeast pump front valve HV03 which are arranged in the waste yeast tank inlet area on the yeast waste discharge pipeline. The module also comprises a flowmeter, specifically a first flowmeter 8 arranged on the yeast recovery pipeline, and is used for metering the yeast recovery quantity in real time, stopping yeast recovery when the real-time recovery quantity is greater than or equal to a set value, and switching to discharge redundant yeast; optionally, a second flowmeter 11 arranged on the yeast waste discharge pipeline can be further included, and the second flowmeter is used for measuring the accumulated amount of waste yeast, but does not participate in control; the module also comprises a yeast recovery pump 7 arranged on the yeast recovery pipeline and a waste yeast pump 10 arranged on the yeast waste discharge pipeline. The condition parameters of yeast recovery and redundant yeast waste discharge or direct waste discharge of waste yeast of the module comprise fermentation sugar degree meeting yeast recovery conditions, liquid level of a waste yeast tank, yeast propagation algebra, yeast recovery quantity meeting yeast waste discharge conditions and parameters of proper opening degree set by a regulating valve; the stopping standard parameters of yeast recovery and redundant yeast waste discharge or direct waste yeast discharge of the module comprise a standard point impedance characteristic coefficient value of yeast recovery/waste discharge stopping discharge and a standard point impedance characteristic coefficient value of stopping top water.

It should be noted that the purpose of the second continuous liquid level sensor for detecting the waste yeast liquid level in real time is to determine whether there are any excess yeast or directly discharged yeast to be discharged and any yeast amount to be discharged after yeast recovery or directly after yeast recovery or after direct discharge before starting the "yeast recovery and excess yeast discharge" or "timed waste discharge" procedure, if the liquid level of the waste yeast tank is higher than the set parameters ("yeast recovery and excess yeast discharge" or "waste yeast direct discharge" are two different parameters, the amount of direct waste discharge is large, a large space is required in the tank, the excess waste is discharged again after recovery, a small space is required in the tank, the actual set value is determined according to the actual project condition after testing), if the liquid level of the waste yeast tank is higher than the set parameters of the corresponding procedure, the condition for starting and executing the corresponding procedure is not met, and the liquid level must be reduced below the set value.

It should be noted that the set value of the propagation algebra of yeast is different in different production plants or different varieties of beer fermentation broth, for example, when the set value is "8", when the propagation algebra of currently used yeast is less than or equal to 8, the yeast recovery and excess yeast waste discharge module is started; when the propagation algebra of the currently used yeast is more than 8, the yeast direct waste discharge module is started. The smaller the propagation passage number of the yeast is, the stronger the activity of the yeast is, and the stronger the usability is. When the propagation algebra of the yeast reaches a certain algebra, the yeast cannot be used, the fermentation quality of beer fermentation liquor cannot be ensured, and waste discharge treatment needs to be carried out.

It should be noted that when the detection value of the yeast recovery/waste discharge stop detection impedance spectrum sensor is less than 88, the opening degree of the regulating valve is controlled to be 100%, and when the detection value of the yeast recovery/waste discharge stop detection impedance spectrum sensor is more than or equal to 88, the opening degree of the regulating valve is controlled to be between 30% and 40%, and the opening degree is determined according to the specific adjustment of the volume and the pipe diameter of the actual fermentation tank.

Specifically, as shown in fig. 4, the process of yeast recovery and excess yeast discharge or direct waste yeast discharge in the present embodiment is as follows:

when the PLC judges that the fermentation sugar degree and the liquid level of the waste yeast tank meet the set yeast recovery condition parameters and the yeast propagation algebra is less than or equal to the set value parameters, starting to execute a yeast recovery and redundant yeast waste discharge program;

starting a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank and a tank bottom three-way valve 5 in the bottom area of the fermentation tank, so that an outlet pipeline of the fermentation tank is communicated with a yeast recovery pipeline;

starting a front valve HV02 of the yeast recovery pump and an inlet valve HV06 of the yeast storage tank, starting the yeast recovery pump 7 to start yeast recovery, and automatically adjusting the set proper opening of a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank according to the impedance characteristic coefficient value of the discharged liquid detected in real time by a yeast recovery/waste discharge stopping detection impedance spectrum sensor 4 on a yeast recovery/waste discharge pipeline in the bottom area of the fermentation tank so as to discharge the yeast at the optimal flow rate and ensure the quality of the recovered yeast;

when the yeast recovery amount measured by the first flowmeter 8 is more than or equal to the yeast amount set value needing to be recovered, stopping the yeast recovery pump 7 and closing an inlet valve HV06 of the yeast storage tank;

opening a waste yeast pump front valve HV03 and a waste yeast tank inlet valve HV08, starting the waste yeast pump 10, and discharging the redundant yeast bars into the waste yeast tank 15;

when the yeast recovery/waste discharge stopping detection impedance spectrum sensor detects that the impedance characteristic coefficient value of the discharged liquid is larger than or equal to a set value (the impedance characteristic coefficient value of a standard point obtained by testing that the yeast recovery/waste discharge stops discharging) in real time, immediately closing a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank, and stopping the waste yeast pump 10;

the opening state of a tank bottom three-way valve 5 in the tank bottom area of the fermentation tank is adjusted to a state that a deoxygenated water top water pipeline is communicated with a yeast recovery and waste discharge pipeline, and a yeast storage tank inlet blow-down valve HV07 is opened at the same time;

opening a deoxygenated water top water valve HV01, and respectively ejecting the yeast in the pipeline to a sewage valve HV07 at an inlet of a yeast storage tank 15 by using deoxygenated water and discharging the yeast into a sewer and a waste yeast tank 15;

when the impedance characteristic coefficient value of the liquid in the detection pipeline of the second top water stopping detection impedance spectrum sensor on the yeast recovery pipeline is larger than or equal to a set value (namely the impedance characteristic coefficient value of the standard point of the top water stopping obtained through the test), closing a front valve HV02 of the yeast recovery pump and a drain valve HV07 of an inlet of the yeast storage tank;

when the impedance characteristic coefficient value of the liquid in the detection pipeline of the third top water detection stopping impedance spectrum sensor on the yeast waste discharge pipeline is larger than or equal to a set value, closing an inlet valve HV08 of the waste yeast tank and a front valve HV03 of the waste yeast pump;

when the yeast recovery pump front valve HV02, the yeast storage tank inlet blow-down valve HV07, the waste yeast tank inlet valve HV08 and the waste yeast pump front valve HV03 are detected to be in a closed state at the same time, after the deoxygenated water top water valve HV01 and the tank bottom three-way valve 5 in the bottom area of the fermentation tank are closed, the yeast recovery and the waste yeast discharge work are finished.

starting a pneumatic adjusting butterfly valve TV01 in the bottom area of the fermentation tank and a tank bottom three-way valve 5 in the bottom area of the fermentation tank, so that an outlet pipeline of the fermentation tank is communicated with a yeast waste discharge pipeline;

starting a waste yeast pump front valve HV03 and a waste yeast tank inlet valve HV08, starting a waste yeast pump 10 to start yeast waste discharge, and automatically adjusting a pneumatic adjusting butterfly valve TV01 in a bottom area of a fermentation tank to a set proper opening according to an impedance characteristic coefficient value of discharged liquid detected in real time by a yeast recovery/waste discharge stop detection impedance spectrum sensor 4 arranged on a yeast recovery/waste discharge pipeline in the bottom area of the fermentation tank so that waste yeast is discharged at an optimal flow rate, and the problem that fermented wine is punctured and flows out due to the fact that the flow rate is too high in the final stage of waste discharge to cause incomplete waste yeast discharge is avoided;

when the yeast recovery/waste discharge stopping detection impedance spectrum sensor 4 detects that the impedance characteristic coefficient value of the discharged liquid is larger than or equal to a set value (the impedance characteristic coefficient value of a standard point of yeast recovery/waste discharge stopping detection obtained through testing), a pneumatic adjusting butterfly valve TV01 of the bottom area of the fermentation tank is closed, and the waste yeast pump 10 is stopped;

the opening state of a tank bottom three-way valve 5 in the bottom area of the fermentation tank is adjusted to be in a state that a deoxygenated water top water pipeline is communicated with a yeast waste discharge pipeline, then a deoxygenated water top water valve HV01 is opened, and the deoxygenated water is used for ejecting the waste yeast in the pipeline into a waste yeast tank 15;

when a third top water stopping detection impedance spectrum sensor 12 on the yeast waste discharge pipeline detects that the impedance characteristic coefficient value of the liquid in the pipeline is larger than or equal to a set value (a third standard point impedance characteristic coefficient value of top water stopping obtained through testing), an inlet valve HV08 of the waste yeast tank, a front valve HV03 of the waste yeast pump, a deoxygenated water top water valve HV01 and a tank bottom three-way valve 5 in the tank bottom area of the fermentation tank are closed, and the direct yeast waste discharge work is finished.

For the timing waste discharge module after yeast recovery or after direct waste discharge, the function is to regularly discharge residual yeast for 1 time after yeast recovery or after direct waste discharge. The detection sensor that stops that this module set up retrieves/wastes discharge and stops detecting impedance spectrum sensor 4, the third of setting on the yeast waste discharge pipeline of useless yeast jar entry area stops top water detection impedance spectrum sensor 12 including setting up on the regional yeast of fermentation cylinder tank bottoms recovery/waste discharge pipeline. The valve related in the module comprises a bottom three-way valve 5 of the bottom area of the fermentation tank, a pneumatic adjusting butterfly valve TV01 of the bottom area of the fermentation tank, an inlet valve HV08 of a waste yeast tank, a front valve HV03 of a waste yeast pump and a top water valve HV01 of deoxygenated water. In addition, for the timing of the yeast recovery or the direct discharge, the pump only includes the waste yeast pump 10 provided in the yeast discharge line. The condition parameters of the module for timed waste discharge after yeast recovery or direct waste discharge specifically comprise fermentation time meeting yeast waste discharge conditions, liquid level of a waste yeast tank and parameters of proper opening set by a regulating valve; the stopping standard parameters of the module for timed waste discharge after yeast recovery or direct waste discharge specifically comprise a standard point impedance characteristic coefficient value for stopping discharge and a standard point impedance characteristic coefficient value for stopping top water in the yeast recovery/waste discharge process.

Preferably, the timed waste module after yeast recovery or after direct waste can be set to waste 1 time every 24 hours.

It should be noted that, because the control requirements of different production plants or different beer fermentation liquid varieties are different, the impedance characteristic coefficient of the mixed liquid of the yeast and the beer fermentation liquid when the discharge is stopped can be selectively set between 90 and 96 according to the actual control requirements.

It should be noted that the system structure of the timed waste discharge process after yeast recovery or after direct waste discharge and the yeast waste discharge process in the yeast direct waste discharge process of the invention are the same structure, the difference is that when the system judges that the propagation algebra of the yeast is larger than the set value, when the fermentation sugar degree and the liquid level of the waste yeast tank meet the set condition parameters, the direct waste discharge process is automatically determined to be started, and the timed waste discharge process after yeast recovery or after direct waste discharge is that the waste discharge process is automatically started for 1 time at regular intervals after the yeast recovery and the waste yeast waste discharge or the waste yeast direct waste discharge process are completed.

Specifically, as shown in FIG. 5, the timed waste discharge process after yeast recovery or direct waste discharge according to the present embodiment is as follows: the process is as follows:

when the PLC judges that the fermentation time and the liquid level of the waste yeast tank meet the set condition parameters of timed waste discharge after yeast recovery or after direct waste discharge, starting a timed waste discharge program after yeast recovery or after direct waste discharge;

the opening state of a tank bottom three-way valve 5 in the tank bottom area of the fermentation tank is adjusted to be in a state that a deoxygenated water top water pipeline is communicated with a yeast waste discharge pipeline, then a deoxygenated water top water valve HV01 is opened, and the deoxygenated water is used for ejecting waste yeast in the pipeline into a waste yeast tank 15;

when a third top water stopping detection impedance spectrum sensor 12 on the yeast waste discharge pipeline detects that the impedance characteristic coefficient value of liquid in the pipeline is larger than or equal to a set value (a third standard point impedance characteristic coefficient value of the top water stopping obtained through testing), an inlet valve HV08 of the waste yeast tank, a front valve HV03 of the waste yeast pump, a top water deoxygenating valve HV01 and a tank bottom three-way valve 5 of the tank bottom area of the fermentation tank are closed, and the timed waste discharge work after the recovery of the yeast or the direct waste discharge is finished.

It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.

Claims

1. A system for identifying and controlling yeast discharge in a beer fermentation process is characterized by comprising:

the detection element is used for stopping yeast discharge signal detection and top water signal detection, and comprises an impedance spectrum sensor, a continuous liquid level sensor, a flowmeter and a proximity switch; the impedance frequency spectrum sensor arranged in the bottom area of the fermentation tank is used for detecting the numerical change of the impedance characteristic coefficient of the discharged liquid in real time and transmitting a real-time numerical change signal to the PLC so as to judge whether the discharge stopping standard parameter is met or not; the impedance spectrum sensor arranged at the inlet areas of the condensation solid tank, the yeast storage tank and the waste yeast tank is used for detecting the numerical value change of the impedance characteristic coefficient of the discharged liquid in the period of water jacking in real time and transmitting a real-time numerical value change signal to the PLC so as to judge whether the standard parameter of stopping water jacking is met or not; the continuous liquid level sensors arranged at the bottoms of the condensed solid tank and the waste yeast tank are used for detecting the liquid level height in the tanks in real time and transmitting real-time continuous liquid level signals to the PLC so as to judge whether the conditions for receiving and discharging liquid are met; the flowmeter is used for measuring the recovery amount of the yeast and transmitting a real-time recovery amount signal to the PLC so as to judge whether a set recovery amount parameter is met; the proximity switch is used for detecting a state signal of opening or closing the valve and transmitting a real-time state signal to the PLC so as to judge whether the opening or closing state of the valve is correct or not;

the PLC is provided with a yeast discharge condition parameter and a standard parameter for stopping yeast discharge, and after the condition parameter is judged to be met by the yeast discharge detection signal, the PLC starts a yeast discharge program and controls an execution element to discharge yeast; and after the impedance spectrum sensor detects that the impedance characteristic coefficient value of the discharged liquid is greater than or equal to the standard parameter for stopping yeast discharge, the PLC stops the yeast discharge program and controls the execution element to stop yeast discharge; wherein the yeast discharge comprises condensed solid discharge, yeast recovery and redundant yeast discharge or direct yeast discharge, and timed yeast discharge or direct yeast discharge;

2. The yeast discharge identification control system of claim 1, wherein the system comprises a condensed solids discharge module, the module comprises a stop detection sensor for detecting the discharge of condensed solids on a condensed solids discharge line disposed in a bottom region of the fermentation tank, a stop top water detection sensor disposed on a condensed solids line disposed in an inlet region of the condensed solids tank; the module comprises a first continuous liquid level sensor arranged at the bottom of the condensed solid tank; the module comprises valves including a tank bottom three-way valve in the tank bottom area of the fermentation tank, a condensed solid discharging three-way valve arranged in the tank bottom area of the fermentation tank, a condensed solid tank inlet valve, a pneumatic adjusting butterfly valve in the tank bottom area of the fermentation tank and a tap water top water valve; the condition parameters of the module for discharging the condensed solids comprise the liquid level of the condensed solids tank meeting the condensed solids discharge condition, the fermentation time and the proper opening parameter set by the regulating valve; the standard stopping parameter of the module for the discharge of the condensed solid comprises a standard point impedance characteristic coefficient value for stopping the discharge of the condensed solid and a standard point impedance characteristic coefficient value for stopping the water ejection.

3. The yeast discharge identification control system of claim 2, wherein the condensed solids discharge process of the condensed solids discharge module is as follows:

when an impedance frequency spectrum sensor arranged on a pipeline for discharging solid matters in the bottom area of the fermentation tank detects that the impedance characteristic coefficient value of the discharged liquid is larger than or equal to a set value in real time, a pneumatic adjusting butterfly valve and a tank bottom three-way valve in the bottom area of the fermentation tank are closed;

adjusting the opening state of a three-way valve for discharging condensed solid to enable a tap water top water pipeline and a pipeline for discharging condensed solid to be in a communicated state;

starting a tap water top water valve, and using tap water to push condensed solids in the pipeline to a condensed solid tank;

4. The yeast discharge identification control system of claim 1, wherein the system comprises a yeast recovery and excess yeast discharge or waste yeast direct discharge module, the module comprises a stop detection sensor, a yeast recovery/waste discharge stop detection impedance spectrum sensor disposed on the yeast recovery/waste discharge line in the bottom region of the fermentation tank, a stop top water detection impedance spectrum sensor disposed on the yeast recovery line in the inlet region of the yeast tank, a stop top water detection impedance spectrum sensor disposed on the yeast discharge line in the inlet region of the waste yeast tank; the module comprises a second continuous liquid level sensor arranged at the bottom of the waste yeast tank; the module comprises valves which are a tank bottom three-way valve in the bottom area of the fermentation tank, a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank, a deoxygenated water top water valve arranged in the area connected with an inlet pipeline of the fermentation tank, a yeast storage tank inlet valve, a yeast storage tank inlet blow-down valve, a yeast recovery pump front valve arranged in the inlet area of a yeast storage tank on a yeast recovery pipeline, a waste yeast tank inlet valve and a waste yeast pump front valve arranged in the inlet area of a waste yeast tank on a yeast waste discharge pipeline; the module also comprises the flowmeter, wherein the flowmeter is a first flowmeter arranged on the yeast recovery pipeline; the module comprises a yeast recovery pump arranged on a yeast recovery pipeline and a waste yeast pump arranged on a yeast waste discharge pipeline; the condition parameters of yeast recovery and redundant yeast waste discharge or direct waste discharge of waste yeast of the module comprise fermentation sugar degree meeting the yeast recovery condition, yeast propagation algebra, waste yeast tank liquid level, yeast recovery quantity meeting the yeast waste discharge condition and proper opening parameter set by the regulating valve; the stopping standard parameters of yeast recovery and redundant yeast waste discharge or direct waste yeast discharge of the module comprise a standard point impedance characteristic coefficient value of yeast recovery/waste discharge stopping discharge and a standard point impedance characteristic coefficient value of stopping top water.

5. The yeast discharge identification control system of claim 4 further comprising a second flow meter disposed on the yeast waste line for cumulatively metering the amount of yeast waste.

6. The yeast discharge identification control system according to claim 4, wherein the yeast recovery and excess yeast waste or waste yeast direct waste process comprises the following steps:

opening a front valve of a yeast recovery pump and an inlet valve of a yeast storage tank, starting the yeast recovery pump to start yeast recovery, and automatically adjusting a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank to a set proper opening according to an impedance characteristic coefficient value of discharged liquid detected in real time by a yeast recovery/waste discharge stop detection impedance spectrum sensor arranged on a yeast recovery/waste discharge pipeline in the bottom area of the fermentation tank so that yeast is discharged at an optimal flow rate;

when the yeast recovery amount measured by the first flowmeter is more than or equal to the yeast amount set value needing to be recovered, stopping the yeast recovery pump and closing an inlet valve of the yeast storage tank;

adjusting the opening state of a tank bottom three-way valve in the tank bottom area of the fermentation tank to enable a deoxygenated water top water pipeline and a yeast recovery and waste discharge pipeline to be in a communication state, and simultaneously opening a yeast storage tank inlet blow-down valve;

when the impedance characteristic coefficient value of the liquid in the detection pipeline of the impedance spectrum sensor for stopping the detection of the water jacking on the yeast waste discharge pipeline is more than or equal to a set value, closing an inlet valve of a waste yeast tank and a front valve of a waste yeast pump;

7. The yeast discharge identification control system of claim 1, comprising a timed waste module after yeast recovery or direct waste, said module comprising a stop detection sensor, a yeast recovery/waste stop detection impedance spectrum sensor disposed on a yeast recovery/waste line at a bottom region of a fermentation tank, a stop top water detection impedance spectrum sensor disposed on a yeast waste line at an inlet region of a waste yeast tank; the module comprises a second continuous liquid level sensor arranged at the bottom of the waste yeast tank; the valves of the module are a tank bottom three-way valve in the bottom area of the fermentation tank, a pneumatic adjusting butterfly valve in the bottom area of the fermentation tank, an inlet valve of the waste yeast tank, a front valve of the waste yeast pump and a top water valve of deoxygenated water; the module comprises a waste yeast pump arranged on a yeast waste discharge pipeline; the timing waste discharge condition parameters of the module after yeast recovery or direct waste discharge comprise fermentation time meeting yeast waste discharge conditions, liquid level of a waste yeast tank and parameters of proper opening degree set by a regulating valve, and the stopping standard parameters of the module after yeast recovery or direct waste discharge comprise a standard point impedance characteristic coefficient value of yeast recovery/waste discharge stopping discharge and a third standard point impedance characteristic coefficient value of stopping top water.

8. The yeast discharge identification control system according to claim 6, wherein the timed discharge process after yeast recovery or direct discharge is as follows:

when the PLC judges that the fermentation time and the liquid level of the waste yeast tank obtained by the second liquid level sensor simultaneously meet the set parameters of the direct yeast waste discharge condition, starting a timed waste discharge program after yeast recovery or direct waste discharge is executed;