阅读说明：本技术 一种间歇结晶罐自动煮糖方法 (Automatic sugar boiling method for intermittent crystallizing tank ) 是由 侯宪邦 刘琳 齐立臣 张立峰 王健 迟雅丽 于 2020-06-09 设计创作，主要内容包括：本发明提供一种间歇结晶罐自动煮糖方法,该方法包括调节间歇结晶罐的真空度,达到设定真空度；通过锤度计和蒸汽阀门控制糖浆底料在所述间歇结晶罐中抽种、固晶；固晶结束后,根据进料电机电流控制糖浆以间接进料方式进入所述间歇结晶罐中进行煮糖；当所述糖浆在所述间歇结晶罐中的液位达到放罐液位,且所述进料电机电流达到放罐电流时,放出煮糖后的所述糖浆。本申请提供的间歇结晶罐自动煮糖方法在抽种后,通过进料电机电流控制糖浆以间接进料方式进入间歇结晶罐中,糖浆的锤度更加接近饱和状态,减少煮糖时间,降低能耗,提高出糖率。间接式进料方式更易控制,减少人员对程序的调整。(The invention provides an automatic sugar boiling method for an intermittent crystallization tank, which comprises the steps of adjusting the vacuum degree of the intermittent crystallization tank to reach a set vacuum degree; controlling syrup bottom materials to be subjected to seed extraction and crystal solidification in the intermittent crystallizing tank through a hammeter and a steam valve; after the solidification of the crystals is finished, controlling the syrup to enter the intermittent crystallizing tank in an indirect feeding mode according to the current of a feeding motor to boil the sugar; and when the liquid level of the syrup in the intermittent crystallization tank reaches a tank placing liquid level and the current of the feeding motor reaches a tank placing current, discharging the syrup after sugar boiling. The application provides an automatic sugar method of boiling of intermittent type crystallizer is after taking out kind of a species, gets into the intermittent type crystallizer with indirect feeding mode through feeding motor current control syrup, and the brix of syrup is close saturated condition more, reduces and boils the sugar time, reduces the energy consumption, improves the sugar yield. The indirect feeding mode is easier to control, and the adjustment of personnel to the program is reduced.)

1. An automatic sugar boiling method of a batch crystallizing tank is characterized by comprising the following steps:

adjusting the vacuum degree of the intermittent crystallizing tank to reach a set vacuum degree;

controlling syrup bottom materials to be subjected to seed extraction and crystal solidification in the intermittent crystallizing tank through a hammeter and a steam valve;

after the solidification of the crystals is finished, controlling the syrup to enter the intermittent crystallizing tank in an indirect feeding mode according to the current of a feeding motor to boil the sugar;

and when the liquid level of the syrup in the intermittent crystallization tank reaches a tank placing liquid level and the current of the feeding motor reaches a tank placing current, discharging the syrup after sugar boiling.

2. The automatic sugar boiling method for batch crystallizing tank according to claim 1, wherein the adjusting the vacuum degree of the batch crystallizing tank to the set vacuum degree comprises:

opening a small vacuum valve to enable the vacuum degree of the intermittent crystallization tank to reach a pre-vacuum degree;

and opening a large vacuum valve to enable the vacuum degree of the intermittent crystallization tank to reach a set vacuum degree, wherein the vacuum degree value of the set vacuum degree is greater than that of the pre-vacuum degree.

3. The automatic sugar boiling method for batch crystallizing tank as claimed in claim 1, wherein the controlling of the syrup bottom material in the batch crystallizing tank by the hammermill and the steam valve to extract and solidify the sugar seeds comprises:

presetting a bottom material feeding liquid level and a bottom material liquid level of the syrup bottom material;

starting a feeding valve, and starting stirring and starting a steam valve when the liquid level of the syrup bottom material entering the intermittent crystallization tank reaches the bottom material feeding liquid level;

when the liquid level of the syrup bottom material reaches the liquid level of the bottom material, closing a feeding valve and evaporating;

when the hammered meter shows seed extraction, the steam valve is adjusted to solidify the crystals.

4. The automatic sugar boiling method for batch crystallizing tank according to claim 1, wherein the controlling the sugar syrup to enter the batch crystallizing tank in an indirect feeding mode according to the current of the feeding motor comprises the following steps:

opening a feeding valve, and feeding the syrup into the intermittent crystallization tank;

when the liquid level of the first feeding of the syrup rises by 1% relative to the liquid level of the syrup bottom material, closing a feeding valve for steaming and concentrating;

when the current of the feeding motor reaches the set first feeding current, the feeding valve is opened and the opening degree of the steam valve is increased;

when the liquid level of the second feeding of the syrup rises by 1.5 percent relative to the liquid level of the first feeding, closing a feeding valve for steaming;

when the current of the feeding motor reaches the set second feeding current, opening the feeding valve and increasing the opening degree of the steam valve until the crystal grains are completely molded; the current value of the second feeding current is larger than that of the first feeding current;

when the grains are completely formed, the steam valve is fully opened, and the liquid level of each feeding of the syrup rises by 2 percent relative to the liquid level of the last feeding.

5. The method for automatically boiling sugar in a batch crystallization tank according to claim 4, wherein the current value of the tank-releasing current is larger than the current value of the second feeding current.

Technical Field

The invention relates to the technical field of sugar production, in particular to an automatic sugar boiling method of an intermittent crystallizing tank.

Background

Sugar is a common seasoning in daily life of people, and comprises sucrose, glucose, fructose, galactose, lactose, maltose and the like, and can provide heat energy for people.

The sugar making process in China mainly comprises the working sections of raw material pretreatment, squeezing and juice extraction, clarification, evaporation and concentration into syrup, syrup sugar boiling, crystallization and centrifugation and the like. At present, most of sugar manufacturing enterprises mainly adopt an intermittent production method in the crystallization section, and the method is in the current situations of manual sugar boiling and semi-automatic sugar boiling. Based on this, the automatic sugar boiling device which takes the current of the stirring motor as a reference quantity to control the feeding valve to intermittently feed sugar is provided. The stirring current controlled automatic sugar boiling has the following advantages: firstly, the current of a stirring motor is a reliable reference quantity; secondly, the sugar is boiled in a high saturation state, so that the time and the energy consumption are saved; thirdly, the sugar boiled by automatic sugar boiling has stable brix and uniform granularity.

In the automatic sugar boiling process of the intermittent crystallizing tank, the syrup is automatically fed, the brix of the syrup is measured through a microwave brix meter, namely the sugar-containing concentration of the syrup, and then the brix displayed through the microwave brix meter is used for judging the crystallization or seed extraction of the syrup. When the crystallization or seed extraction can be carried out, the microwave hammermill can control the liquid level of the tank by controlling the opening of the feeding valve. The problem of long sugar boiling time and increased energy consumption exists when the crystallization or seed extraction of the syrup is judged according to a microwave hammered meter.

Disclosure of Invention

The invention provides an automatic sugar boiling method for an intermittent crystallizing tank, which aims to solve the problem of high energy consumption of the existing method.

The invention provides an automatic sugar boiling method for an intermittent crystallizing tank, which comprises the following steps:

adjusting the vacuum degree of the intermittent crystallizing tank to reach a set vacuum degree;

controlling syrup bottom materials to be subjected to seed extraction and crystal solidification in the intermittent crystallizing tank through a hammeter and a steam valve;

after the solidification of the crystals is finished, controlling the syrup to enter the intermittent crystallizing tank in an indirect feeding mode according to the current of a feeding motor to boil the sugar;

and when the liquid level of the syrup in the intermittent crystallization tank reaches a tank placing liquid level and the current of the feeding motor reaches a tank placing current, discharging the syrup after sugar boiling.

Preferably, the adjusting the vacuum degree of the batch crystallization tank to the set vacuum degree comprises:

opening a small vacuum valve to enable the vacuum degree of the intermittent crystallization tank to reach a pre-vacuum degree;

and opening a large vacuum valve to enable the vacuum degree of the intermittent crystallization tank to reach a set vacuum degree, wherein the vacuum degree value of the set vacuum degree is greater than that of the pre-vacuum degree.

Preferably, the controlling of syrup bottom materials in the batch crystallizing tank through the hammermill and the steam valve for seed extraction and crystal solidification comprises the following steps:

presetting a bottom material feeding liquid level and a bottom material liquid level of the syrup bottom material;

starting a feeding valve, and starting stirring and starting a steam valve when the liquid level of the syrup bottom material entering the intermittent crystallization tank reaches the bottom material feeding liquid level;

when the liquid level of the syrup bottom material reaches the liquid level of the bottom material, closing a feeding valve and evaporating;

when the hammered meter shows seed extraction, the steam valve is adjusted to solidify the crystals.

Preferably, said controlling the syrup to be boiled in said batch crystallizer in an indirect feeding manner according to the current of the feeding motor comprises:

opening a feeding valve, and feeding the syrup into the intermittent crystallization tank;

when the liquid level of the first feeding of the syrup rises by 1% relative to the liquid level of the syrup bottom material, closing a feeding valve for steaming and concentrating;

when the current of the feeding motor reaches the set first feeding current, the feeding valve is opened and the opening degree of the steam valve is increased;

when the liquid level of the second feeding of the syrup rises by 1.5 percent relative to the liquid level of the first feeding, closing a feeding valve for steaming;

when the current of the feeding motor reaches the set second feeding current, opening the feeding valve and increasing the opening degree of the steam valve until the crystal grains are completely molded; the current value of the second feeding current is larger than that of the first feeding current;

when the grains are completely formed, the steam valve is fully opened, and the liquid level of each feeding of the syrup rises by 2 percent relative to the liquid level of the last feeding.

Preferably, the current value of the tank discharge current is larger than that of the second feeding current.

The technical scheme provided by the embodiment of the invention can have the following beneficial effects:

the invention provides an automatic sugar boiling method for an intermittent crystallization tank, which comprises the steps of adjusting the vacuum degree of the intermittent crystallization tank to reach a set vacuum degree; controlling syrup bottom materials to be subjected to seed extraction and crystal solidification in the intermittent crystallizing tank through a hammeter and a steam valve; after the solidification of the crystals is finished, controlling the syrup to enter the intermittent crystallizing tank in an indirect feeding mode according to the current of a feeding motor to boil the sugar; and when the liquid level of the syrup in the intermittent crystallization tank reaches a tank placing liquid level and the current of the feeding motor reaches a tank placing current, discharging the syrup after sugar boiling. The application provides an automatic sugar method of boiling of intermittent type crystallizer is after taking out kind of a species, gets into the intermittent type crystallizer with indirect feeding mode through feeding motor current control syrup, and the brix of syrup is close saturated condition more, reduces and boils the sugar time, reduces the energy consumption, improves the sugar yield. The indirect feeding mode is easier to control, and the adjustment of personnel to the program is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Detailed Description

The embodiment of the application provides an automatic sugar boiling method for an intermittent crystallizing tank, which comprises the following steps:

s01: and adjusting the vacuum degree of the intermittent crystallizing tank to reach the set vacuum degree.

When the syrup begins to enter the automatic sugar boiling, a small vacuum valve is opened to ensure that the vacuum degree of the intermittent crystallizing tank reaches the pre-vacuum degree. If syrup begins to enter the automatic sugar boiling process, the large vacuum valve is directly opened, the large vacuum degree can directly influence the whole vacuum system of the intermittent crystallizing tank, and therefore the small vacuum valve is opened, and the whole vacuum system can be effectively prevented from being influenced.

When the vacuum degree of the batch crystallizing tank reaches the pre-vacuum degree, a large vacuum valve is slowly opened so as to enable the vacuum degree of the batch crystallizing tank to reach the set vacuum degree, and the vacuum degree is maintained. In the embodiment of the application, the vacuum degree value of the set vacuum degree is larger than the vacuum degree value of the pre-vacuum degree.

S02: controlling syrup bottom materials to be pumped and solidified in the intermittent crystallizing tank through a hammeter and a steam valve.

During the process that the syrup is boiled in the intermittent crystallizing tank to form crystals, syrup base materials are required to be adopted in advance to form crystals, and then a large amount of syrup enters the intermittent crystallizing tank to be boiled to form more crystals. Therefore, seed extraction and crystal solidification are needed in the batch crystallization tank through syrup base materials. In particular, the method comprises the following steps of,

s021: the bottom material feeding liquid level and the bottom material liquid level of the syrup bottom material are preset, and the bottom material liquid level is higher than the bottom material feeding liquid level.

S022: and (3) opening a feeding valve, and starting stirring and opening a steam valve when the liquid level of the syrup bottom material entering the intermittent crystallizing tank reaches the bottom material feeding liquid level.

And after setting the bottom material feeding liquid level and the bottom material liquid level of the syrup bottom material, opening a feeding valve to feed the bottom material. When the liquid level of the syrup bottom material entering the intermittent crystallization tank reaches the bottom material feeding liquid level, the stirring device is started to stir. And simultaneously opening a steam valve to perform concentration steaming. If the liquid level of the syrup bottom material entering the intermittent crystallizing tank does not reach the bottom material feeding liquid level, a steam valve is opened, caramel is easily generated in the concentration steaming process, and seed extraction is influenced.

S023: and when the liquid level of the syrup bottom material reaches the liquid level of the bottom material, closing a feeding valve and evaporating.

When the level of the syrup bed material reaches the bed material level, the feed valve is closed. At this time, the batch crystallizer starts to evaporate.

S024: when the hammered meter shows seed extraction, the steam valve is adjusted to solidify the crystals.

In the process of evaporating the concentrated liquid in the intermittent crystallizing tank, the brix meter displays the brix of the syrup bottom materials in the intermittent crystallizing tank in real time. When the brix displayed by the brix meter reaches the powder feeding or seed extraction, the powder feeding or seed extraction is started. Wherein the purpose of powder feeding or seed extraction is to make syrup into grains. When powder is fed or seeds are extracted from the intermittent crystallizing tank, the steam valve is adjusted to reduce the steam, so that the crystal solidification or crystal growing stage is carried out.

S03: and after the solidification, controlling the syrup to enter the intermittent crystallizing tank in an indirect feeding mode according to the current of a feeding motor to boil sugar.

And after the crystal forming and crystal solidification of the syrup base material in the intermittent crystallizing tank are finished, the brix of the syrup displayed by the brix meter is in a low saturation state. If the syrup is boiled according to the brix meter, the boiling time is longer, and the current of the motor is closer to the saturation state. If a continuous feeding mode is adopted, the problem of motor tripping easily occurs due to overhigh current of the motor in a state close to saturation, and the production is influenced. Therefore, in the embodiment of the application, the syrup enters the batch crystallizing tank in an indirect feeding mode to be boiled and crystallized.

In particular, the method comprises the following steps of,

s031: and opening a feeding valve, and feeding the syrup into the intermittent crystallizing tank.

Before the feeding valve is opened, the steam valve is opened to ensure that the opening degree of the steam valve reaches the set opening degree, so that the steam can conveniently enter the intermittent crystallizing tank. And when the opening degree of the steam valve reaches the set opening degree, opening the feeding valve to enable the syrup to enter the intermittent crystallizing tank.

S032: and when the liquid level of the first feeding of the syrup rises by 1 percent relative to the liquid level of the syrup bottom material, closing a feeding valve to carry out concentration steaming.

When the first feeding liquid level of the syrup rises by 1 percent relative to the liquid level of the syrup bottom material, the feeding valve is closed, and the syrup does not enter the intermittent crystallizing tank any more. And (5) carrying out concentration steaming treatment on the syrup in a batch crystallization tank.

S033: and when the current of the feeding motor reaches the set first feeding current, opening the feeding valve and increasing the opening degree of the steam valve.

When the current of the feeding motor reaches the set first feeding current, the feeding valve is opened and the opening degree of the steam valve is increased, so that the syrup enters the intermittent crystallizing tank more quickly. The first feeding current in the embodiment of the application is the current high limit, and the arrangement of the first feeding current can prevent the condition that the motor is overloaded due to overhigh hammer degree of syrup in the intermittent crystallization tank. The opening of the steam valve is related to each feed liquid level, and when the feed liquid level becomes larger, the opening of the steam valve is increased.

S034: when the second feeding liquid level of the syrup rises by 1.5 percent relative to the first feeding liquid level, the feeding valve is closed for evaporation and concentration.

When the second feeding liquid level of the syrup rises by 1.5 percent relative to the first feeding liquid level, the feeding valve is closed, and the syrup does not enter the intermittent crystallizing tank any more. And continuously carrying out concentration steaming treatment on the syrup in the intermittent crystallizing tank.

S035: when the current of the feeding motor reaches the set second feeding current, opening the feeding valve and increasing the opening degree of the steam valve until the crystal grains are completely molded; the current value of the second feeding current is larger than that of the first feeding current.

Along with the continuous rising of the syrup liquid level in the intermittent crystallization tank, the current value of the feeding motor also continuously rises. And when the current of the feeding motor reaches the set second feeding current, opening the feeding valve again and increasing the opening of the steam valve until the crystal grains are completely molded.

S036: when the grains are completely formed, the steam valve is fully opened, and the liquid level of each feeding of the syrup rises by 2 percent relative to the liquid level of the last feeding.

When the crystal grains are completely formed, the steam valve is fully opened, and the conditions of grain melting and grain combination can not occur. When the steam valve is fully opened, the syrup is fed in an indirect mode, and the feeding liquid level rises by 2 percent relative to the feeding liquid level at the last time.

S04: and when the liquid level of the syrup in the intermittent crystallization tank reaches a tank placing liquid level and the current of the feeding motor reaches a tank placing current, discharging the syrup after sugar boiling.

When the liquid level of the syrup in the intermittent crystallizing tank reaches the tank-placing liquid level and the current of the feeding motor reaches the tank-placing current, discharging the syrup after sugar boiling. The pot discharging current is the current for finishing sugar boiling, different intermittent crystallizing pots are corresponding to different finishing currents, and the finishing currents determine the finishing current value according to the data of the artificial sugar boiling and the laboratory. And after the syrup is completely discharged, automatically washing the tank. The current value of the tank discharging current in the embodiment of the application is larger than that of the second feeding current.

The automatic sugar method of cooking of intermittent type crystallizer that this application embodiment provided is after taking out kind of a species, gets into the intermittent type crystallizer with indirect feeding mode through feeding motor current control syrup, and the brix of syrup is close saturated state more, reduces and boils the sugar time, reduces the energy consumption, improves the sugar rate. The indirect feeding mode is easier to control, and the adjustment of personnel to the program is reduced.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The present invention is not limited to the precise arrangements shown and described above, and various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.