Continuous sugar boiling and crystallization assisting control system

Abstract

The utility model belongs to the technical field of sugar manufacturing processes, and particularly relates to a continuous sugar boiling and crystallization assisting control system which comprises a continuous sugar boiling tank, a seed box and a syrup box, an in-tank pressure sensor, a massecuite temperature sensor, a brix meter, a steam drum pressure sensor and a steam drum temperature sensor are mounted in the continuous sugar boiling tank; a vacuum regulating valve and a steam regulating valve are mounted outside the continuous sugar boiling tank; the massecuite receiving box is connected with the discharging end of the continuous sugar boiling tank, and a liquid level meter is mounted in the massecuite receiving box; the feeding end of the vertical crystallization assisting machine is connected with the discharging end of the massecuite receiving box, and an overflow opening is formed in the upper part of the vertical crystallization assisting machine; one end of the massecuite heater is connected with the overflow port through a pipeline, and the other end is connected with a massecuite distribution groove; the cold water tank is connected with the vertical crystallization assisting machine through a pipeline; the hot water tank is connected with the massecuite heater through a pipeline. The sugar boiling device can overcome the defects of intermittent sugar boiling and existing continuous sugar boiling, cooperative control of sugar boiling and crystallization assisting is achieved, and the sugar boiling device has good market application prospects.

Description

Technical Field

[0001] The utility model belongs to the technical field of sugar-making technology, and particularly relates to a continuous sugar-boiling and crystal-aiding control system. Background Art

[0002] Sugar boiling is one of the most important production links in the sugar-making process. The traditional production mode is intermittent. That is, after boiling a tank of sugar, the vacuum is removed, the steam is turned off, the boiled sugar paste is put into the crystal-aiding tank, then the tank is washed, the vacuum is restarted, and seeds and syrup are pumped in for re-boiling. This method cannot achieve continuous production, and the steam pressure fluctuates greatly, which is not conducive to balanced production and steam consumption. At present, a small number of sugar factories have begun to adopt continuous sugar-boiling technology, but it is only used in the crystallization part, and the crystal-aiding part is not involved and needs to be improved.

[0003] In view of the deficiencies of intermittent sugar boiling and the existing continuous sugar boiling, according to the requirements of the production process, this application proposes a continuous sugar-boiling and crystal-aiding control system to achieve the coordinated control of sugar boiling and crystal-aiding.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a continuous sugar-boiling and crystal-aiding control system to solve the deficiencies of intermittent sugar boiling and the existing continuous sugar boiling and achieve the coordinated control of sugar boiling and crystal-aiding.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A continuous sugar-boiling and crystal-aiding control system includes:

[0008] A continuous sugar-boiling tank, whose feeding end is connected to a seed tank and a syrup tank; a tank internal pressure sensor, a sugar paste temperature sensor, a refractometer, a steam drum pressure sensor, and a steam drum temperature sensor are installed inside the continuous sugar-boiling tank; a vacuum regulating valve and a steam regulating valve are installed outside the continuous sugar-boiling tank;

[0009] A sugar paste receiving tank, connected to the discharging end of the continuous sugar-boiling tank, and a liquid level gauge is installed inside it;

[0010] A vertical crystal-aiding machine, whose feeding end is connected to the discharging end of the sugar paste receiving tank through a sugar paste pump; an overflow port is arranged at the upper part of the vertical crystal-aiding machine;

[0011] A sugar paste heater, one end of which is connected to the overflow port through a pipeline and the other end is connected to a sugar paste distribution tank;

[0012] A cold water tank, connected to the vertical grain finisher through a pipeline;

[0013] A hot water tank, connected to the sugar paste heater through a pipeline.

[0014] Preferably, cold water pipelines connecting the cold water tank are installed on both the upper and lower sections of the vertical grain finisher, and cooling pipe inlet regulating valves are provided on both of the 2 cold water pipelines; temperature sensors are installed in the middle section, lower section and sugar paste outlet of the vertical grain finisher.

[0015] Preferably, the 2 cold water pipelines converge into 1 cold water main pipe to connect to the cold water tank, a cooling water temperature sensor is provided on the cold water main pipe; the cold water main pipe is also connected to the hot water tank through a hot water pipeline.

[0016] Preferably, a hot water temperature sensor and a regulating valve are installed at the hot water inlet of the sugar paste heater, a sugar paste thermometer is installed at its sugar paste outlet position; a hot water thermometer is installed in the hot water tank, and a steam regulating valve is provided on the steam pipeline connected to its outside.

[0017] Compared with the prior art, the utility model has the following beneficial effects: The continuous sugar boiling and grain finishing control system of the utility model realizes the overall control of continuous sugar boiling and grain finishing of sugar paste. Compared with intermittent sugar boiling, it can realize continuous full-automatic sugar boiling, without manual participation, saving labor and steam consumption. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the system of the utility model;

[0019] Figure 2 is the schematic diagram of the sugar boiling pan of the utility model;

[0020] Figure 3 is the schematic diagram of the vertical grain finisher of the utility model. Detailed Embodiments

[0021] The technical solutions of the utility model patent are described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that, for terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the utility model.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, for terms such as "installation", "connection", "linkage", a broad understanding should be made. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Referring to the attached Figures 1 - 3 , a continuous sugar boiling and crystal growth assisting control system includes:

[0025] A continuous sugar boiling tank, whose feeding end is connected to a seed tank and a syrup tank; inside the continuous sugar boiling tank, a tank pressure sensor, a sugar paste temperature sensor, a refractometer, a steam drum pressure sensor, and a steam drum temperature sensor are installed; outside the continuous sugar boiling tank, a vacuum regulating valve and a steam regulating valve are installed;

[0026] A sugar paste receiving tank, connected to the discharging end of the continuous sugar boiling tank, and a liquid level gauge is installed inside it;

[0027] A vertical crystal growth assisting machine, whose feeding end is connected to the discharging end of the sugar paste receiving tank through a sugar paste pump; an overflow port is arranged at the upper part of the vertical crystal growth assisting machine;

[0028] A sugar paste heater, one end of which is connected to the overflow port through a pipeline and the other end is connected to a sugar paste distribution tank;

[0029] A cold water tank, connected to the vertical crystal growth assisting machine through a pipeline;

[0030] A hot water tank, connected to the sugar paste heater through a pipeline.

[0031] In this embodiment, the tank pressure sensor installed inside the continuous sugar boiling tank is used to measure the pressure inside the tank, and the sugar paste temperature sensor is installed to measure the temperature of the sugar paste inside the tank. There are multiple compartments inside the continuous sugar boiling tank, and a sugar paste refractometer is installed in each compartment to measure the sugar paste refractometer. The steam drum pressure sensor installed inside the steam drum is used to measure the pressure of the steam drum, and the steam drum temperature sensor is used to measure the temperature of the steam drum. The vacuum regulating valve installed outside the continuous sugar boiling tank is used to adjust the pressure inside the tank, and the steam regulating valve is used to adjust the pressure and temperature of the steam drum.

[0032] A liquid level sensor is installed in the molasses receiving tank to measure the amount of molasses in the molasses receiving tank. A molasses pump is used to pump the molasses in the molasses receiving tank to the vertical grain refining machine. A stirring motor is installed in the vertical grain refining machine to stir the molasses and prevent it from coagulating.

[0033] Cold water pipes connecting to the cold water tank are installed in the upper and lower sections inside the vertical grain refining machine to cool the molasses inside the vertical grain refining machine. Cooling pipe inlet regulating valves are provided on both of the 2 cold water pipes, which can respectively adjust the amount of cold water entering the upper and lower sections inside the vertical grain refining machine. Temperature sensors are installed in the middle section, lower section and molasses outlet of the vertical grain refining machine to measure the molasses temperature at different parts inside the vertical grain refining machine. The 2 cold water pipes converge into 1 cold water main pipe connecting to the cold water tank. A cooling water temperature sensor is provided on the cold water main pipe to measure the cooling water temperature; the cold water main pipe is also connected to the hot water tank through a hot water pipe, and the cooling water temperature entering the 2 cold water pipes can be adjusted.

[0034] A hot water temperature sensor is installed at the hot water inlet of the molasses heater to measure the temperature of the heated hot water; a regulating valve is installed on the hot water inlet pipe to adjust the amount of heated water. A molasses thermometer is installed at the molasses outlet position of the molasses heater to measure the temperature of the outlet molasses. A hot water thermometer is installed inside the hot water tank, and a steam regulating valve is provided on the steam pipe connected to its outside to adjust the temperature of the hot water.

[0035] The above-mentioned various sensors and valves are all connected to the PLC controller. The system control service collects the sensor information and the status of the actuators through the PLC, and controls the actuator actions according to the feedback of the sensors. In this embodiment, the temperature sensor adopts Meiyi SUP-WZPK-F, the pressure sensor adopts Meiyi SUP-PX400G, the refractometer adopts Fives MONOTRAC IIID, the liquid level gauge adopts Meiyi SUP-2051LT-D, the PLC adopts Zhongkong G3Smart, and the valve adopts Honeywell V8BFW16-100.

[0036] Working principle: During sugar boiling, seeds and syrup are continuously added to the continuous sugar boiling tank at a certain ratio, and the boiled molasses continuously flows into the molasses receiving tank; the molasses in the molasses receiving tank is pumped to the vertical grain refining machine by the molasses pump and undergoes cooling and grain refining in the vertical grain refining machine; an overflow port is provided at the upper part of the vertical grain refining machine. When the molasses in the vertical grain refining machine reaches a certain amount, it will automatically flow out to the molasses heater for heating; the heated molasses enters the centrifugal separator through the molasses distribution tank for centrifugal separation operation.

[0037] When sugar boiling starts, the system automatically opens the vacuum regulating valve to control the vacuum degree in the continuous sugar boiling tank within the set range.

[0038] After the vacuum degree in the continuous sugar boiling pan reaches the requirement, the seed pump is automatically opened to pump in seeds. After the amount of seeds reaches the set requirement, the system automatically opens the steam regulating valve to introduce steam into the steam drum and controls the pressure of the steam drum within the set range.

[0039] When the sugar paste in the sugar boiling pan has good convection, the system automatically opens the material valve and controls the feeding of each chamber according to the feedback of the saccharimeter to ensure that the saccharimeter degree of each chamber meets the requirements.

[0040] The boiled sugar paste automatically overflows into the sugar paste receiving tank. When the liquid level in the sugar paste receiving tank reaches the requirement, the system automatically controls the operation of the sugar paste pump to continuously pump the sugar paste into the vertical grain refining machine.

[0041] The system automatically controls the regulating valves respectively connected to the cold water tank and the hot water pipeline according to the feedback of the cooling water temperature sensor to control the temperature of the cooling water within the set range.

[0042] The system automatically adjusts the opening degree of the regulating valve at the inlet of the corresponding cooling pipe according to the outlet temperature and the middle section temperature of the vertical grain refining machine to control the amount of cooling water entering the pipeline, thereby controlling the cooling speed of the sugar paste and realizing the control of the internal sugar paste temperature.

[0043] When there is sugar paste in the vertical grain refining machine, the system automatically controls the stirring motor to start stirring to ensure that the sugar paste is uniform and does not coagulate. When the volume of the sugar paste in the vertical grain refining machine reaches the overflow height, it will flow from the overflow port to the sugar paste heater, and after being heated by the sugar paste heater, it will flow to the sugar paste distribution tank for honey separation.

[0044] The system automatically detects the temperature of the sugar paste at the outlet of the sugar paste heater and controls the opening degree of the corresponding regulating valve according to the change of the temperature, thereby controlling the amount of hot water for heating and controlling the temperature of the outlet sugar paste within a suitable range.

[0045] The continuous sugar boiling and grain refining control system of the present utility model realizes the centralized control of the continuous sugar boiling pan and the vertical grain refining machine, realizes the full-automatic control of the grain refining process, ensures the grain refining effect, solves the deficiencies of intermittent sugar boiling and the existing continuous sugar boiling, realizes the coordinated control of sugar boiling and grain refining, is very practical, and has good market application prospects.

[0046] The foregoing description of the specific exemplary embodiments of the present utility model is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present utility model as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. A continuous sugar boiling and grain refining control system, characterized in that, Including: A continuous sugar boiling pan, whose feed end is connected to a seed tank and a syrup tank; a tank internal pressure sensor, a sugar paste temperature sensor, a Brix meter, a steam drum pressure sensor and a steam drum temperature sensor are installed inside the continuous sugar boiling pan; a vacuum regulating valve and a steam regulating valve are installed outside the continuous sugar boiling pan; A sugar paste receiving tank, connected to the discharge end of the continuous sugar boiling pan, and a liquid level gauge is installed inside it; A vertical grain finisher, whose feed end is connected to the discharge end of the sugar paste receiving tank through a sugar paste pump; an overflow port is provided at the upper part of the vertical grain finisher; A sugar paste heater, one end of which is connected to the overflow port through a pipeline and the other end is connected to a sugar paste distribution tank; A cold water tank, connected to the vertical grain finisher through a pipeline; A hot water tank, connected to the sugar paste heater through a pipeline.

2. The continuous sugar boiling and grain refining control system according to claim 1, wherein Cold water pipelines connecting the cold water tank are installed at both the upper and lower sections of the vertical grain finisher, and cooling pipe inlet regulating valves are provided on both of the 2 cold water pipelines; temperature sensors are installed at the middle section, lower section and sugar paste outlet of the vertical grain finisher.

3. The continuous sugar boiling and grain refining control system according to claim 2, wherein The 2 cold water pipelines converge into 1 cold water main pipe connecting the cold water tank, and a cooling water temperature sensor is provided on the cold water main pipe; the cold water main pipe is also connected to the hot water tank through a hot water pipeline.

4. The continuous sugar boiling and grain refining control system according to claim 1, wherein, A hot water temperature sensor and a regulating valve are installed at the hot water inlet of the sugar paste heater, and a sugar paste thermometer is installed at the sugar paste outlet position; a hot water thermometer is installed inside the hot water tank, and a steam regulating valve is provided on the steam pipeline connected to its outside.

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