Online dilution system for molasses

Abstract

The utility model discloses a molasses on-line dilution system, the system comprises a dilution tank, a stirring mechanism, a steam heating structure layer, a hot water pipe, a detection assembly and a PLC controller, the dilution tank is connected with a feeding pipe, the stirring mechanism is arranged in the dilution tank, the stirring mechanism comprises a rotating shaft and a plurality of stirring plate assemblies, each stirring plate assembly is fixedly connected with the rotating shaft, a steam heating structure layer is fixedly arranged below each stirring plate assembly, a steam valve is arranged on each steam heating structure layer, the steam valves are electrically connected with the PLC, a plurality of hot water pipes are fixedly arranged on the dilution tank at intervals from top to bottom, hot water valves are arranged on the hot water pipes, and the hot water valves are electrically connected with the PLC. The hot water valve is electrically connected with the PLC, each stirring plate assembly is provided with a detection assembly used for detecting the temperature and the brix, and the detection assemblies are electrically connected with the PLC. According to the molasses diluting device, accurate temperature and dilution degree adjustment is carried out on molasses at different heights, the molasses diluting uniformity is improved, and the diluting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molasses dilution, in particular to an online molasses dilution system. Background Art

[0002] During the sugar boiling process in the sugar factory, all feed concentrations must be adapted to the supersaturation of the mother liquor in the sugar paste, so that the sugar added to the feed and the sugar deposited on the crystals can reach a balance. If the feed concentration is too high, the supersaturation of the sugar paste will increase sharply and pseudocrystals will be generated; if the feed concentration is too low, it will not only prolong the sugar boiling time and increase the steam consumption, affecting the balance and processing volume of the material, but also cause local crystal dissolution or reduce the crystallization rate. Therefore, the molasses of each level entering the tank must be heated in the dilution box and diluted with hot water. The purpose is to heat the feed to a temperature slightly higher than the temperature of the sugar paste in the tank to meet the feed temperature conditions, and also to dissolve the young crystals in the molasses to avoid uneven crystallization after entering the tank.

[0003] At present, the molasses dilution box used in sugar factories is used to heat and dilute the molasses entering the sugar boiling tank. The dilution box has a heating pipe at the bottom, and a feed pipe and a water pipe at the top. The molasses enters from the top of the box, and the dilution speed is slow. In addition, the molasses at different heights are not heated and diluted evenly, and the heating speed is also slow. Utility Model Content

[0004] The utility model aims to provide a molasses online dilution system for the above-mentioned problems, which can accurately adjust the temperature and dilution degree of molasses at different heights, improve the uniformity of molasses dilution, and improve the dilution efficiency.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0006] According to one aspect of the utility model, there is provided a molasses online dilution system, comprising a dilution tank, a stirring mechanism, a steam heating structure layer, a hot water pipe, a detection component and a PLC controller;

[0007] The dilution tank is connected with a feeding pipe;

[0008] The stirring mechanism is arranged in the dilution tank, and the stirring mechanism comprises a rotating shaft and a plurality of stirring plate assemblies arranged at intervals along the axis of the rotating shaft, and each of the stirring plate assemblies is fixedly connected to the rotating shaft;

[0009] The steam heating structure layer is fixedly arranged below each of the stirring plate assemblies, and a steam valve is arranged on the steam heating structure layer, and the steam valve is electrically connected to the PLC controller;

[0010] A plurality of hot water pipes are fixedly arranged on the dilution tank at intervals from top to bottom, and a hot water valve is arranged on the hot water pipe, and the hot water valve is electrically connected to the PLC controller;

[0011] A detection component for detecting temperature and brix is ​​arranged on each stirring plate component, and the detection component is electrically connected to the PLC controller.

[0012] Preferably, a feeding valve is provided on the feeding pipe, and the feeding valve is electrically connected to the PLC controller.

[0013] Preferably, the stirring plate assembly comprises a plurality of stirring plates, and the plurality of stirring plates are fixedly arranged on the rotating shaft at intervals along the circumferential direction of the rotating shaft.

[0014] Preferably, each stirring plate is arranged at an inclination relative to a horizontal plane.

[0015] Preferably, the inclination angle of the stirring plate relative to the horizontal plane is 10-15°.

[0016] Preferably, the stirring plate is provided with a plurality of through holes, and the plurality of through holes are evenly arranged on the stirring plate.

[0017] Preferably, the steam heating structure layer comprises a steam coil, and the steam coil is formed by a steam pipe being coiled in circles from the inside to the outside.

[0018] Preferably, the detection component includes a temperature sensor and a bromance sensor, and the temperature sensor and the bromance sensor are connected to the PLC controller.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] The utility model arranges steam heating structural layers and hot water pipes at different heights of a dilution tank, detects the temperature and hammer of molasses at different heights through detection components at different heights, and uses a PLC controller to control the opening of a steam valve and a hot water pipe, thereby accurately heating and accurately diluting the molasses at different heights, improving the dilution uniformity of the molasses and improving the dilution efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] In the attached drawings, 1, dilution tank; 2, feeding pipe; 3, A original box; 4, B original box; 5, feeding valve; 6, feeding branch valve; 7, rotating shaft; 8, motor; 9, stirring plate; 10, steam coil; 11, steam valve; 12, hot water pipe; 13, hot water valve; 14, temperature sensor; 15, hammer sensor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling readers to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.

[0024] See also Figure 1 The utility model provides a molasses online dilution system, and the technical scheme is as follows:

[0025] A molasses online dilution system includes a dilution tank, a stirring mechanism, a steam heating structure layer, a hot water pipe, a detection component and a PLC controller. A feeding pipe is connected to the dilution tank, one end of the feeding pipe is connected to the dilution tank, and the other end is connected to the A original box and the B original box through the feeding branch pipe, respectively. The A original box contains A molasses, and the B original box contains B molasses. A feeding valve is arranged on the feeding pipe, and the feeding valve is connected to the PLC controller. A feeding branch valve is arranged on the feeding branch pipe, and the feeding branch valve is connected to the PLC controller. The feeding branch valve and the feeding valve are controlled by the PLC controller to control the type of molasses passing through the dilution tank.

[0026] A stirring mechanism is provided in the dilution tank, and the molasses in the dilution tank is stirred by the stirring mechanism to accelerate the dilution rate. Specifically, the stirring mechanism includes a rotating shaft and a plurality of stirring plate assemblies arranged at intervals along the axis of the rotating shaft. The rotating shaft is arranged in the dilution tank, and the upper end of the rotating shaft is fixed in the dilution tank through a bearing. The bearing is fixedly arranged above the dilution tank, the outer ring of the bearing is fixedly connected to the dilution tank, the upper end of the rotating shaft passes through the dilution tank and is fixedly connected to the inner ring of the bearing, and the end of the rotating shaft passing through the dilution tank is fixedly connected to the output end of the motor. The rotating shaft is driven to rotate by the motor, and the rotating shaft drives the stirring plate assembly to rotate, so as to stir the molasses in the dilution tank and accelerate the dilution efficiency of the molasses. Each stirring plate assembly is fixedly connected to the rotating shaft. The stirring plate assembly includes a plurality of stirring plates, and the plurality of stirring plates are fixedly arranged on the rotating shaft at intervals along the circumferential direction of the rotating shaft. One end of the stirring plate is fixedly connected to the rotating shaft, and the other end extends outward in the horizontal direction. In order to improve the stirring efficiency, each stirring plate is inclined relative to the horizontal plane, and the inclination angle of the stirring plate relative to the horizontal plane is between 10-15°, preferably 15°, which can be selected according to actual needs, and this application does not explain in detail. And the stirring plates on the same horizontal plane can be set to different inclination angles, so that the molasses at the same level flows in a wave-like manner, so as to improve the fluidity of the molasses at the same level, facilitate the heating of the molasses and facilitate the mixing and contact of the molasses with hot water, and improve the dilution rate. Furthermore, a plurality of through holes are provided on the stirring plate, and the plurality of through holes are evenly arranged on the stirring plate. By providing through holes on the stirring plate, when the stirring plate rotates, molasses flows through the through holes, which not only diverts the same stream of molasses, disrupts the flow path of the molasses, improves the turbulence effect, makes the molasses better contact with the hot water, and heats the molasses.

[0027] A steam heating structure layer is fixedly arranged under each stirring plate, and the steam heating structure layer is used to heat the molasses in the area near each stirring plate to achieve the purpose of uniform heating and precise heating. Specifically, the steam heating structure layer includes a steam coil, which is formed by winding a steam pipe from the inside to the outside in circles. A hole is reserved in the middle of the steam coil to facilitate the passage of the rotating shaft and ensure that the rotation of the rotating shaft will not be affected. One end of the steam coil is the steam inlet, and the other end is the steam outlet. Both ends of the steam coil pass through the dilution tank, and the coiled part is located on a horizontal plane at a certain height in the dilution tank. A steam valve is arranged on one end of the steam coil for steam inlet, and the steam valve is electrically connected to the PLC controller. The PLC controller can be used to control the opening of the steam valve, thereby controlling the steam inlet amount of the steam coil, which is convenient for heating and controlling the molasses at a certain height of the dilution tank. The steam outlets of the steam coils at different heights can be connected to the waste steam main through pipelines, and the steam is recycled and reused through the waste steam main, thereby improving the sustainability of the system and saving costs.

[0028] A plurality of hot water pipes are arranged at intervals from top to bottom on the dilution tank. One end of the hot water pipe passes through the dilution tank and extends to the inside of the dilution tank and is connected to the dilution tank. A hot water valve is arranged on one end of each hot water pipe placed outside the dilution tank, and the hot water valve is electrically connected to the PLC controller. The opening of the hot water valve is controlled by the PLC controller, thereby controlling the amount of hot water introduced, so as to facilitate the dilution of molasses at a certain height of the dilution tank with water, so as to achieve the purpose of accurate dilution, make the molasses dilution more sufficient, and improve the dilution efficiency.

[0029] A detection component for detecting temperature and bract is provided on each stirring plate, and the detection component includes a temperature sensor and a bract sensor, and the temperature sensor and the bract sensor are connected to the PLC controller. The temperature and bract information at the height are measured by the temperature sensor and the bract sensor, and the temperature and bract information are fed back to the PLC controller, and the PLC controller controls the opening of the steam valve and the hot water valve at the height according to the temperature and bract information of the molasses at the height, thereby controlling the steam and hot water as much as possible, so as to accurately heat and dilute the molasses at the height.

[0030] Based on the above-mentioned molasses online dilution system, the present application also discloses a molasses online dilution method, and the specific steps are as follows:

[0031] The molasses to be diluted is introduced into the dilution tank through the feeding pipe, the opening of the steam valve and the hot water valve at different heights is controlled by the PLC controller, hot water is added into the dilution tank to heat the molasses at the same time, and the motor is started, the rotating shaft is driven by the motor to rotate, and the rotating shaft drives the stirring plate to rotate, so as to stir the molasses to be diluted in the dilution tank;

[0032] Detect the temperature at different heights in the dilution tank and the Brix of molasses;

[0033] When the temperature and the Brix at any height are lower than the process requirement, the process requirement is the Brix value to be reached after the molasses is diluted, and the temperature value of the molasses at this Brix value. When the temperature at this height is lower than the process requirement, the PLC controller increases the opening of the steam valve at this height, increases the amount of steam introduced, and increases the temperature at this height to heat the molasses near this height. When the Brix at this height is lower than the process requirement, the opening of the hot water valve at this height is reduced, and the inflow of hot water is reduced, thereby reducing further dilution of the molasses.

[0034] When the temperature and brix at any height are higher than the process requirements. When the temperature at this height is higher than the process requirements, the PLC controller reduces the opening of the steam valve at this height, reduces the amount of steam introduced, and reduces the temperature at this height, so as to slowly heat the molasses near this height. When the brix at this height is higher than the process requirements, the opening of the hot water valve at this height is increased, and the inflow of hot water is increased, thereby further diluting the molasses;

[0035] When the temperature at any height is lower than the process requirement and the brix is ​​higher than the process requirement. When the temperature at this height is lower than the process requirement, the PLC controller increases the opening of the steam valve at this height and increases the amount of steam introduced to increase the temperature at this height to heat the molasses near this height. When the brix at this height is higher than the process requirement, the opening of the hot water valve at this height is increased to increase the inflow of hot water, thereby further diluting the molasses.

[0036] When the temperature at any height is higher than the process requirement and the brix is ​​lower than the process requirement. When the temperature at this height is higher than the process requirement, the PLC controller reduces the opening of the steam valve at this height and reduces the amount of steam introduced to reduce the temperature at this height, so as to slowly heat the molasses near this height. When the brix at this height is lower than the process requirement, the opening of the hot water valve at this height is reduced to reduce the inflow of hot water, thereby reducing further dilution of the molasses.

[0037] Until the brix and temperature of molasses at different heights reach the process requirements, the diluted molasses can be exported.

[0038] Through the above steps, the temperature and dilution of molasses at different heights can be accurately adjusted, the uniformity of molasses dilution can be improved, and the dilution efficiency can be improved.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A molasses online dilution system, characterized in that: It includes a dilution tank, a stirring mechanism, a steam heating structure layer, a hot water pipe, a detection component and a PLC controller; The dilution tank is connected with a feeding pipe; The stirring mechanism is arranged in the dilution tank, and the stirring mechanism comprises a rotating shaft and a plurality of stirring plate assemblies arranged at intervals along the axis of the rotating shaft, and each of the stirring plate assemblies is fixedly connected to the rotating shaft; The steam heating structure layer is fixedly arranged below each of the stirring plate assemblies, and a steam valve is arranged on the steam heating structure layer, and the steam valve is electrically connected to the PLC controller; A plurality of hot water pipes are fixedly arranged on the dilution tank at intervals from top to bottom, and a hot water valve is arranged on the hot water pipe, and the hot water valve is electrically connected to the PLC controller; A detection component for detecting temperature and brix is ​​arranged on each stirring plate component, and the detection component is electrically connected to the PLC controller.

2. A molasses online dilution system according to claim 1, characterized in that: The feeding pipe is provided with a feeding valve, and the feeding valve is electrically connected to the PLC controller.

3. A molasses online dilution system according to claim 1, characterized in that: The stirring plate assembly includes a plurality of stirring plates, and the plurality of stirring plates are fixedly arranged on the rotating shaft at intervals along the circumferential direction of the rotating shaft.

4. A molasses online dilution system according to claim 3, characterized in that: Each stirring plate is arranged to be inclined relative to the horizontal plane.

5. A molasses online dilution system according to claim 4, characterized in that: The inclination angle of the stirring plate relative to the horizontal plane is 10-15°.

6. A molasses online dilution system according to claim 5, characterized in that: The stirring plate is provided with a plurality of through holes, and the plurality of through holes are evenly arranged on the stirring plate.

7. A molasses online dilution system according to claim 1, characterized in that: The steam heating structure layer comprises a steam coil, and the steam coil is formed by winding a steam pipe from the inside to the outside in circles.

8. A molasses online dilution system according to claim 1, characterized in that: The detection component comprises a temperature sensor and a bromance sensor, and the temperature sensor and the bromance sensor are connected to the PLC controller.

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