Device for continuously producing liquid syrup

Abstract

A device for continuously producing liquid syrup comprises a sugar bag elevator, the sugar bag elevator is connected with an automatic bale breaker through a conveyor, and the bale breaker is connected with a sugar hopper; the refined white granulated sugar unloading and metering system is respectively connected with the sugar hopper and the primary sugar dissolving box; an air energy heating system is arranged on the purified water system, and the air energy heating system is connected with the primary hot water inlet and metering system through a hot water pump P0; the first-stage hot water inlet and metering system is connected with the first-stage sugar dissolving box, and the first-stage sugar dissolving box is connected with the first-stage syrup filter; the first-stage syrup filter is connected with the first-stage syrup temporary storage box, one end of the steam pipeline system is connected with the first-stage syrup temporary storage box, and the other end of the steam pipeline system is connected with the steam generator; the first-stage syrup temporary storage box is connected with the second-stage sugar dissolving box; one end of the second-stage hot water inlet and sag control system is connected with the large hot water tank, and the other end is connected with the second-stage sugar dissolving tank; and the secondary syrup temporary storage box is connected with the outlet syrup automatic canning system. According to the utility model, continuous, stable and automatic production of liquid syrup is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid sugar production, in particular to a device for continuous production of liquid syrup. Background Art

[0002] Liquid sugar (whole cane sugar syrup) is made from edible white sugar, which is refined, finely filtered, ultraviolet sterilized and concentrated. It is a new type of sugar product that integrates innovation, energy saving, green and environmental protection. It can replace refined white sugar for food processing, help users simplify production processes, reduce production costs, and has stable quality and food safety guarantees. It achieves full coverage of existing sugar sources and greatly reduces the cost of use. The product quality is qualitatively improved compared to traditional solid white sugar and greatly facilitates customer use.

[0003] It is suitable for various food industries such as catering, baking, beverages, fillings, and users such as bars, teahouses, and residential kitchens. It can be used for products with unique flavor and color requirements, such as jam, pickles, sauces, tomato juice, mustard, etc.; it can also be used as a substrate for industrial fermentation. For corporate users, liquid sugar does not require a complicated dissolution process and can directly enter the production line, thereby reducing manual operation processes, subverting traditional processes, saving time and effort, and greatly reducing sugar costs.

[0004] At present, the production process of liquid sugar mostly adopts multiple intermittent small sugar dissolving systems, which cycle the feed production in sequence to achieve the purpose of continuous production. For example, a domestic liquid sugar production workshop uses three intermittent sugar dissolving production lines for rotation production. Each production line uses an electric hoist to lift the sugar bags from the 1st layer to the 2nd layer one by one, and then the bags are broken manually for feeding. This feeding method is time-consuming and occupies a lot of manpower. The sugar hopper and the sugar dissolving box are connected by a screw conveyor. The sugar dissolving box requires high-temperature hot water to dissolve the sugar. Steam will enter the screw machine, causing the white sugar to clump and be difficult to clean. The sugar dissolving box is a horizontal intermittent sugar dissolving box. Only after a box of white sugar is dissolved and the syrup is discharged into the subsequent sugar storage box, can sugar and water be added to start the dissolution of a new box of syrup. This production method is time-consuming and energy-consuming; the production of hot water and steam is also heated by a gas furnace, which has high safety costs, high energy consumption, and will also have a certain impact on the environment. These process production methods are relatively traditional, and the overall equipment occupies a large space. Although the process is simple, the construction cost is high, the maintenance workload is relatively large, and it requires more human resources. Utility Model Content

[0005] In order to overcome the above technical defects, the purpose of the utility model is to provide a device for continuous production of liquid syrup. Different from the previous intermittent cycle production, the system and control method utility model can realize continuous, stable and automatic production of liquid syrup. The system has the characteristics of safety, reliability, high efficiency, stability, energy saving and environmental protection, and space saving.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A device for continuous production of liquid syrup, comprising a sugar bag elevator 1, the sugar bag elevator 1 runs through the 1st to 3rd floors of the workshop, and is connected to an automatic unpacking machine 2 installed on the 3rd floor of the workshop through a conveyor at the 3rd floor exit, and the unpacking machine 2 exit is downwardly connected to a sugar hopper 5.1 on the 2nd floor of the workshop;

[0008] The refined white sugar unloading metering system 5 is located on the first floor of the workshop. The refined white sugar unloading metering system 5 is connected to the sugar hopper 5.1 upwards through a pipeline, and is connected to the primary sugar dissolving box 7 downwards;

[0009] A purified water system 3 is arranged on the third floor of the workshop, an air energy heating system 4 is arranged at the outlet of the purified water system 3, a hot water pump P0 is arranged at the outlet of the heating system 4, and the hot water pump P0 is connected to a first-level hot water inlet and metering system 6; the first-level hot water inlet and metering system 6 is downwardly connected to a first-level sugar dissolving tank 7, and the sugar inlet and water inlet systems are connected to the top of the first-level sugar dissolving tank 7;

[0010] The outlet of the first-level sugar dissolving tank 7 is connected upward to the inlet of the first-level syrup filter 8 through a pipe; the outlet of the first-level syrup filter 8 is connected downward to the top inlet of the first-level syrup buffer tank 10 by a pipe, one end of the steam pipeline system 9 is connected to the steam inlet of the first-level syrup buffer tank 10, and the other end is connected to the steam generator; the outlet of the first-level syrup buffer tank 10 is connected to the bottom inlet of the second-level sugar dissolving tank 11 through a pipe; one end of the second-level hot water inlet and verticality control system 13 is connected to the large hot water tank, and the other end is connected to the water inlet of the second-level sugar dissolving tank 11; the outlet of the second-level syrup buffer tank 12 is connected to the outlet syrup automatic canning system 15 through a pipe, and the ultraviolet pipe sterilizer 14 is installed on the pipe between the second-level syrup buffer tank 12 and the outlet syrup automatic canning system 15.

[0011] The sugar bag elevator 1 is a vertical lifting device, and the sugar bucket 5.1 is an inverted square cone storage bucket; the purified water system 3 is an independent water purification system, and the hot water pump P0 is connected to a large hot water tank of the first-level hot water inlet and metering system 6 located on the third floor of the workshop through a pipe. A syrup pump P1 is arranged at the outlet of the first-level sugar dissolving tank 7, which is connected upward with a pipe to the inlet of the first-level syrup filter 8 located on the second floor of the workshop; the outlet of the first-level syrup filter 8 is connected downward with a pipe to the outlet of the first-level syrup buffer tank 10 on the first floor of the workshop. The top entrances are connected, the outlet of the first-level syrup buffer box 10 is connected to the bottom entrance of the second-level sugar-dissolving box 11 located on the first floor of the workshop by a pipe, and the large hot water tank is located on the third floor of the workshop; the second-level syrup buffer box 12 and the second-level sugar-dissolving box 11 are connected as a whole, and the two boxes are separated by a partition; the outlet of the second-level syrup buffer box 12 is connected to the outlet syrup automatic canning system 15 located on the first floor of the workshop by a pipe, and the ultraviolet pipe sterilizer 14 is installed on the pipe between the second-level syrup buffer box 12 and the outlet syrup automatic canning system 15.

[0012] The sugar bag elevator 1 transports the sugar bags from the 1st layer to the 3rd layer. A conveyor belt 1.1 is arranged at the entrance of the sugar bag elevator 1 for transporting the white sugar bags into the sugar bag elevator 1. A conveyor belt 2 1.2 is arranged at the exit of the sugar bag elevator 1 for transporting the sugar bags lifted to the 3rd layer into the automatic unpacking machine 2 at the rear end.

[0013] The automatic unpacking machine 2 comprises a conveying device 2.1, a guiding device 2.2, a cutting device 2.3, a dust removal device 2.4, an unpacking machine housing 2.5, a bag discharging device 2.6, and a material discharging device 2.7;

[0014] The conveying device 2.1 is an upward conveyor belt, which is located at the front end of the entrance of the automatic unpacking machine 2. A guide device 2.2 is arranged at the end of the conveying device 2.1, and the guide device 2.2 is connected to the body of the unpacking machine 2. A cutting device 2.3 is installed at the entrance of the body of the unpacking machine 2. A discharging device 2.7 is arranged below the body of the unpacking machine 2, a dust removal device 2.4 is arranged above the body, a spiral bag discharging device 2.6 is arranged at the rear of the body, and a sugar hopper 5.1 is arranged at the bottom of the discharging device 2.7 below the body.

[0015] The conveying device 2.1 can send the sugar bag into the guide device 2.2 connected thereto, and the guide device 2.2 can straighten the sugar bag and send the sugar bag straight into the body of the unpacking machine 2 at the rear. A cutting device 2.3 is installed at the entrance of the body of the unpacking machine 2. The vertical blade of the cutting device 2.3 can cut the sugar bag, and the white sugar in the sugar bag flows out to the discharge device 2.7 below the body. The dust removal device 2.4 above the body can absorb the sugar powder. After the white sugar is unloaded, the empty bag is transported to the outside of the unpacking machine through the spiral bag discharge device 2.6 at the rear of the body. The discharge device 2.7 below the body opens the valve to discharge the white sugar downward into the sugar hopper 5.1.

[0016] The white sugar unloading and metering system 5 has a sugar hopper 5.1 (2nd layer) on the top, and the sugar hopper 5.1 is located below the automatic unpacking machine 2. A material level detection element 1 5.2 is installed at the bottom of the sugar hopper 5.1, and a material level detection element 2 5.3 is installed at the top. The material level detection element 1 5.2 is used to detect the low material level (empty warehouse) state of the sugar hopper 5.1, and the material level detection element 2 5.3 is used to detect the high material level (full warehouse) state of the sugar hopper 5.1. The bottom of the sugar hopper 5.1 is connected to the primary sugar dissolving box 7 (1st layer) through a vertical pipeline, and a star feeder M0 (1st layer) and a solid particle flow meter CMF1 (1st layer) are installed on the pipeline.

[0017] The installation position of the star feeder M0 and the solid particle flowmeter CMF1 is close to the primary sugar dissolving box 7. This installation is to reduce the condensation water generated by hot air entering the pipeline and merging with sugar to form sugar blocks. When the white sugar falls, a downward pressure airflow can be generated to bring the hot air back to the primary sugar dissolving box 7. The star feeder M0 is driven by a variable frequency motor. The purpose of using the star feeder M0 here is to make the flow of white sugar tend to be stable.

[0018] The water purification system 3 (3rd layer) purifies the tap water source into purified water for production that meets the edible standard. The water purification system 3 includes a raw water tank 3.1, a raw water pump 3.2, a sand tank 3.3, a carbon tank 3.4, a precision filter 3.5, a high-pressure pump 3.6, an osmotic membrane system 3.7, a pure water tank 3.8 and a water supply pump 3.10 which are connected in sequence; an ozone generator 3.9 is arranged on the pure water tank 3.8.

[0019] The tap water source (raw water) enters the raw water tank 3.1 (water inlet tank), and is pumped into the sand tank 3.3 and the carbon tank 3.4 by the raw water pump 3.2 for primary filtration to reduce the water turbidity and filter out the odor and color in the water, and then enters the pre-precision filter 3.5 (J3218-GWG-4000) for secondary precision filtration to further remove the residual particulate matter in the water, and then the filtered water is pumped to the reverse osmosis membrane system 3.7 by the high-pressure pump 3.6 for high-pressure reverse osmosis treatment;

[0020] The osmotic membrane system 3.7 is a four-stage filtration system composed of four reverse osmosis filters, each of which is cylindrical in shape. The reverse osmosis filter element is installed in the reverse osmosis filter through the rolling technology, which can filter out chemical ions and small molecules such as bacteria, fungi, and viruses in the water and discharge them with the wastewater, leaving only the purified water molecules and solvents with a volume less than 0.0001 microns to enter the pure water tank 3.8 of the next stage. The pure water tank 3.8 is connected to an ozone generator 3.9, and the ozone generator 3.9 releases ozone into the pure water tank 3.8 to disinfect the pure water once. The outlet of the pure water tank 3.8 is connected to the water supply pump 3.10 by a pipe, and an ultraviolet pipe sterilizer 3.11 is installed on the pipe. After the pure water is disinfected twice, it is pumped out by the water supply pump 3.10 for use as production water.

[0021] The heating system 4 (3 layers) is placed at the outlet of the purified water system 3, and is connected by a channel. The heating system 4 heats the water source purified by the purified water system 3. The working principle of the heating system 4 is based on the heat pump technology, which utilizes the physical phenomena of compression, expansion, condensation and evaporation in the heat pump cycle to transfer the heat energy in the low-temperature air to the high-temperature air, thereby achieving the purpose of heating. The purpose of using the heating system 4 is to replace the traditional gas heater or electric heater, which is not only environmentally friendly and achieves zero emission of harmful gases, but also greatly reduces the production cost.

[0022] A large hot water tank 6.1 (3 layers) is arranged on the upper part of the primary hot water inlet and metering system 6, and a hot water pump P0 is arranged between the inlet of the large hot water tank 6.1 and the outlet of the heating system 4, which are connected by a pipeline. The hot water pump P0 is driven by a variable frequency motor. A liquid level gauge L1 is installed on the outer side of the tank body of the large hot water tank 6.1 to guide the frequency converter that controls the hot water pump P0. A small water tank 6.2 (3 layers) is arranged below the large hot water tank 6.1. During normal production, the small water tank 6.2 is in a full tank state. This is to allow a constant downward pressure at the outlet of the small water tank to make the flow of hot water in the pipeline stable. The bottom of the small water tank 6.2 is also connected to the primary sugar dissolving tank 7 by a vertical pipeline. A pneumatic regulating butterfly valve V1 (2 layers) is installed on the upper part of the pipeline, and a liquid electromagnetic flowmeter F2 (2 layers) is installed on the lower part.

[0023] The first-level sugar dissolving box 7 is a closed tank with a cylindrical upper portion and a conical lower portion. A stirring motor M1 is installed on the top to drive a stirring device 7.1 inside the first-level sugar dissolving box 7. A first-level syrup pump P1 (1 layer) is configured at the outlet of the first-level sugar dissolving box 7. The outlet of the first-level syrup pump P1 is connected to the inlet of the first-level syrup filter 8 by a pipeline.

[0024] The primary syrup filter 8 filters out the coarse sand impurities in the primary syrup to make the primary syrup purer. The primary syrup filter 8 is composed of three cylindrical filters 8.1;

[0025] Each cylindrical filter 8.1 is provided with a layer of cylindrical filter 2 8.2 along the cylinder wall. The cylindrical filter 2 8.2 separates the interior of the cylindrical filter 8.1 into two chambers, an inner chamber and an outer chamber. There is a sealing cover 8.3 on the top, which can be opened during maintenance. A feed pipe 8.4 is connected to the bottom of the inner chamber. The feed pipes of all cylindrical filters 8.1 are centrally connected to the main feed pipe 8.5. A feed valve 8.6 is installed on each feed pipe 8.4. After the control system controls the feed valve 8.6 to open, the syrup enters the inner chamber of the cylindrical filter 8.1 from the bottom to the top through the feed pipe 8.4, and then passes through the cylindrical filter 8.5 from the inner chamber to the main feed pipe 8.5. Filter 2 8.2 enters the outer cavity, and the particulate matter is blocked in the inner cavity by the cylindrical filter 2 8.2. The pure syrup is discharged from the outer cavity to the main discharge pipe 8.8 through the discharge pipe 8.7. A discharge valve 8.9 is installed on each discharge pipe 8.7. The discharge pipes 8.7 of all cylindrical filters 2 8.2 are centrally connected to the main discharge pipe 8.8, and then flow to the next-level equipment through the main discharge pipe 8.8. Each cylindrical filter 1 8.1 works independently. A pressure detection device 8.10 is installed on the cylindrical filter 1 8.1. The pressure detection device 8.10 is set on the top of the cover plate of each cylindrical filter 1 8.1 to detect the syrup pressure in each filtering device.

[0026] During normal operation, when a high value of syrup pressure in the cylinder is detected, it means that the filter screen is clogged and the filtering work needs to be stopped and the filter screen needs to be cleaned. After cleaning, wait for the next filtering cycle to start; the cleaning water is provided by the purified water system 3, and the cleaning water is pressurized by a pressure pump 8.11 and enters each cylindrical filter 1 8.1 through the main cleaning pipe 8.12. A cleaning water inlet valve 8.14 is installed on the cleaning pipe 8.13 at the bottom of each filter. The internal spray cleaning pipeline of the filter is pulled by the rotary motor 8.15 at the bottom of the filter, and rotates along the cylindrical filter 2 8.2. When cleaning, the cleaning water is sprayed out through the nozzle 8.16 on the spray cleaning pipeline to clean the cylindrical filter 2 8.2. When the primary syrup filter 8 starts working, each filtering device filters in turn.

[0027] The outlet of the primary syrup filter 8 is provided with a pipe downwardly connected to the syrup inlet of the primary syrup buffer box 10 .

[0028] The first-level syrup buffer box 10 is a cylindrical sealed tank, which is placed on the first floor, and its bottom falls on a higher steel frame structure, so that it is in a high position. A stirring motor M2 is installed on the top to drive the stirring device 10.1 inside the first-level syrup buffer box 10. A temperature sensor T1 is installed at the outlet of the first-level syrup buffer box 10 to detect the outlet syrup temperature, and a steam pipe is connected to the box.

[0029] The steam pipeline system 9 is composed of an air-energy steam generator 9.1 and a steam pipe. The steam is generated by the air-energy steam generator and enters the steam pipe of the first-level syrup buffer box 10. The steam pipe is divided into three entrances, upper, middle and lower, to enter the first-level syrup buffer box 10. The pipe inside the first-level syrup buffer box 10 is annular. Such a structure is designed to evenly heat the syrup in the storage tank.

[0030] The bottom of the primary syrup buffer tank 10 is connected to the bottom of the secondary sugar dissolving tank 11 located on the ground of the first floor by a pipe, and a pneumatic regulating butterfly valve V3 and an electromagnetic flowmeter F2 are installed on the pipe. The primary syrup flows along the pipe from the bottom of the primary syrup buffer tank 10 to the secondary sugar dissolving tank 11. This structure is used to ensure the stability of the syrup feeding and to keep the syrup at a balanced and stable flow value.

[0031] The secondary sugar dissolving box 11 and the secondary syrup buffer box 12 are connected as a whole, and the two boxes are separated by a partition. The lower part of the partition is sealed with the box, and the upper part is open, which is a slender and tall structure. The secondary sugar dissolving box 11 is bottom-fed, and a stirring motor M3 is installed on the top of the secondary sugar dissolving box 11 to drive the stirring device 3 11.1 inside the secondary sugar dissolving box 11. A sag meter BX is installed at the bottom of the secondary sugar dissolving box 11 near the syrup inlet to measure the sag of the syrup in real time. A hot water pipe is also connected to the bottom of the box, and the hot water pipe is connected to the large hot water tank 6.1.

[0032] The secondary hot water inlet and sag control system 13 is composed of a hot water pipe connected to the large hot water tank 6.1 at the upper part, and connected to the secondary sugar dissolving tank 11 near the syrup inlet at the lower part, with a small water tank 13.1 as a buffer in the middle, which has the same function as the small water tank on the primary sugar dissolving tank, so that the flow of hot water in the pipeline is stable, and a pneumatic regulating butterfly valve V4 is installed at the water inlet of the hot water pipe to the secondary sugar dissolving tank 11. Here, the sag meter BX and the hot water regulating valve V4 are installed at the position of the pipeline outlet to make the regulating valve V4 have a faster response speed. The sag meter BX adopts the Atuo CM-800α online refractometer, and the regulating valve adopts the SMC pneumatic control valve group; the secondary sugar dissolving tank 11 is made into a thin and high structure so that the primary syrup and hot water can be fused in the shortest time, and the purpose of doing so is to reduce the hysteresis of the syrup fusion. Make the syrup reach the required final sag value in time and accurately.

[0033] The entrance of the secondary syrup buffer box 12 is the gap on the upper part of the partition separated from the secondary sugar dissolving box 11, and the outlet is located at the bottom of the side of the box body. The bottom surface of the box body is inclined from the partition side of the secondary sugar dissolving box 11 from top to bottom to the exit of the secondary syrup buffer box 12. Such a structure can make the secondary syrup flow to the exit, and prevent the syrup from solidifying and forming lumps at the bottom of the box. The exit of the secondary syrup buffer box 12 is connected to the secondary syrup pump P2 by a pipe, and an ultraviolet pipe sterilizer 14 is installed on the pipe to sterilize and disinfect the secondary syrup. The disinfected secondary syrup is then pumped to the exit syrup automatic canning system 15 by the secondary syrup pump P2 to be canned, put into storage, and wait for sale.

[0034] The independent devices, detection elements, motors, frequency converters, valve actuators and PLC main control modules are electrically connected.

[0035] A control method for a device for continuous production of liquid syrup, comprising the following control steps;

[0036] Step 1: The PLC controller sends a start command to the controller of the sugar bag elevator 1, and sequentially starts the inlet conveyor belt 1.1; the sugar bag elevator host and the outlet conveyor belt 2.2, and sends the sugar bag into the sugar bag elevator 1 through the inlet conveyor belt 1.1, and is transported from the 1st floor to the 3rd floor, and then sent to the automatic unpacking machine 2 (3rd floor) through the outlet conveyor belt 2.2 for unpacking;

[0037] Step 2: The PLC controller sends a start command to the automatic unpacking machine controller to start the automatic unpacking machine 2, and sequentially starts the bag discharging device 2.6, the material discharging device 2.7, the dust removal device 2.4, the cutting device 2.3, the guide device 2.2, and the conveying device 2.1 in the automatic unpacking machine to start disassembling the sugar bag, so that the sugar is separated from the sugar bag after disassembly and breaking, and the sugar enters the sugar hopper 5.1. During normal production, the material level in the sugar hopper should always be above the low material level to ensure the normal supply of the sugar material. The material level is transmitted to the PLC through the detection signals of the detection elements 5.2 and 5.3 for judgment. According to different material level conditions, the PLC controls the output module to perform corresponding control;

[0038] When the PLC determines that the material level is low (empty bin state), the sugar and water intake will be stopped;

[0039] When the PLC determines that the material level is in the middle (normal state), all processes proceed normally;

[0040] When the PLC determines that the material level is high (full warehouse status), the front-end unpacking machine and sugar bag elevator will be stopped;

[0041] When the PLC determines that it is an error signal, it stops feeding sugar and water, and also stops the front-end automatic unpacking machine 2 and sugar bag elevator 1. At the same time, it sends an alarm signal to the control screen to remind the staff to check the working status of the sensor on site.

[0042] Step 3: The PLC controller controls the purified water system, heating system, hot water pump inverter, automatic syrup filling system, and star feeder inverter in series through the Profinet bus;

[0043] The PLC controller sends a start command to the purified water system controller through the profinet bus, and monitors the flow of the purified water system 3, and the purified water source enters the heating system 4;

[0044] Step 4: The PLC controller sends a start command to the heating system controller through the profinet bus, and monitors the hot water temperature at the outlet of the heating system 4. The purified water is heated to 90°C by the heating system 4 and then pumped into the large hot water tank 6.1 through the hot water pump P0; the large hot water tank liquid level meter L1 feeds back the actual measured liquid level value to the PLC, and sets the required target liquid level (%) of the large hot water tank in the WINCC parameter screen. The PLC controller gives the corresponding speed frequency to the inverter of the hot water pump P0 through the profinet bus, controls the speed of the hot water pump P0 motor, and keeps the hot water entering the large hot water tank 6.1 at a constant flow rate, so that the hot water level in the large hot water tank 6.1 is kept at the set target liquid level position;

[0045] Step 5: The amount of white sugar and hot water entering the first-stage sugar dissolving tank 7 is set according to a certain ratio. This ratio value is determined by the total flow rate of the first-stage syrup and the sag value of the first-stage syrup. The total flow rate of the first-stage syrup is set according to the required output. The sag value of the first-stage syrup should generally be higher than the final required syrup sag value. By setting the required target flow rate (T / h) of the first-stage syrup and the target sag value (BX%) of the first-stage syrup on the WINCC screen, the target flow rate values ​​of white sugar and water are automatically given after calculation by the PLC controller. The required white sugar flow rate is given by the PLC, and after passing through the solid particles, the target flow rate of the white sugar and water is automatically given. After the particle flow meter CMF1 measures, the actual measured value is fed back to the PLC. The PLC controller controls the frequency conversion speed regulation of the star feeder M0 through the profinet bus to achieve the required white sugar flow rate (T / h); the required hot water flow rate is given by the PLC, and the actual measured value is fed back to the PLC after being measured by the liquid electromagnetic flow meter F2. The PLC controls the opening of the butterfly valve V1 to achieve the required hot water flow rate (T / h). After the white sugar and hot water enter the first-level sugar dissolving tank, the PLC controller starts the first-level sugar dissolving tank stirring device 7.1 to stir, so that the two are fully mixed and dissolved;

[0046] Step 6: The PLC controller sends a start command to the primary syrup pump control loop, starts the primary syrup pump P1 to pump the syrup from the primary sugar dissolving tank outlet to the primary syrup filter 8 (2 layers);

[0047] Step 7: The PLC controller sends a start command to the automatic syrup filter controller to start the syrup filter to start working. The syrup filter has three filter barrels. First, the feed valve of filter barrel No. 1 is opened, and the syrup enters filter barrel No. 1 for filtering. When it is detected that the filter screen of filter barrel No. 1 is blocked and cannot continue filtering, the feed valve of filter barrel No. 1 is closed to stop feeding. At the same time, the feed valve of filter barrel No. 2 is opened to allow syrup to enter filter barrel No. 2 to start filtering. At this time, filter barrel No. 1 starts to automatically clean the filter screen, and waits for the next feeding and filtering after cleaning. In this way, the three filters work in sequence and clean the filter screen to achieve the continuity of syrup filtering. The filtered syrup flows downward along the pipeline to the primary syrup buffer box 10;

[0048] Step 8: After the filtered first-level syrup enters the first-level syrup buffer box 10, the PLC controller sends a start command to the control circuit of the motor of the stirring device of the first-level syrup buffer box, and starts the motor to stir, so that the heated first-level syrup will not solidify and crystallize under the stirring of the stirring device 2 10.1;

[0049] Step 9: For the syrup in the primary syrup buffer tank, the target temperature (℃) of the primary syrup is set in the WINCC screen, and the actual measured value is fed back to the PLC after being measured by the temperature sensor T1. The PLC controls the opening of the butterfly valve V2 to control the steam flow rate to achieve the required target temperature (℃);

[0050] Step 10: The heated primary syrup flows from the bottom of the primary syrup buffer box 10 along the pipeline to the secondary sugar dissolving box. The required syrup target flow rate (T / h) is set on the WINCC screen. After being measured by the pipeline flow meter F2, the actual measured value is fed back to the PLC. The PLC controls the opening of the butterfly valve V3 to achieve the required target flow rate (T / h). The method of controlling the flow rate of syrup is used for the feed to the secondary sugar dissolving box to ensure the stability of the secondary syrup feed and provide the best initial value for the next step of adjusting the syrup sag.

[0051] Step 11: For the primary syrup entering the secondary sugar dissolving tank 11, the required syrup target sag (BX%) is set on the WINCC screen, and the actual measured value is fed back to the PLC after being measured by the sag meter BX. The PLC controls the opening of the butterfly valve V4 to allow hot water to enter the secondary sugar dissolving tank 11 and mix with the primary syrup. Since the sag of the primary syrup is higher than the final required syrup sag value, hot water is added to the secondary sugar dissolving tank 11 again to dilute and dissolve the primary syrup so that its sag value reaches the required final sag value.

[0052] Step 12: The PLC controller sends a start command to the control circuit of the motor of the stirring device of the secondary sugar dissolving tank, starts the motor stirring device, and makes the secondary syrup after the final dissolution be uniformly stirred by the stirring device 11.1 of the secondary sugar dissolving tank, and then flows upward from the overflow port at the upper end of the partition of the secondary sugar dissolving tank 11 into the secondary syrup buffer tank 12;

[0053] Step 13: The PLC controller sends a start command to the secondary syrup pump control loop, starts the secondary syrup pump P2 to pump the secondary syrup from the outlet of the secondary syrup buffer tank through the ultraviolet pipe sterilizer 14 to the outlet syrup automatic canning system 15;

[0054] Step 14: The PLC controller sends a start command to the controller of the ultraviolet pipe sterilizer, and starts the ultraviolet pipe sterilizer to sterilize the secondary syrup with ultraviolet light.

[0055] Ultraviolet pipe sterilizer is a device used to sterilize liquids in pipes. The removal rate of various viruses and bacteria in syrup treated by ultraviolet sterilizer can reach more than 99.99%, without changing the properties of the syrup and maintaining the original taste and color.

[0056] The PLC controller sends a start command to the automatic syrup canning system controller through the profinet bus, starting the automatic syrup canning system to start canning the final secondary syrup produced. The automatic syrup canning system consists of three independent canning machines placed in parallel. The outlet conveyor belt of each canning machine is connected to the main outlet conveyor belt. The flow of each filling machine, the cumulative flow of the entire canning system and the cumulative number of canning completed by the entire canning system can be monitored on the WINCC host computer and a report can be automatically generated, so that the output of syrup can be conveniently counted.

[0057] The beneficial effects of the utility model.

[0058] The system uses an elevator to transport sugar bags, which can solve the problem of space utilization. For transporting goods from low to high places, the previous transportation methods mostly use belt conveyors or overhead cranes. Both transportation methods have their advantages and disadvantages. Belt conveyors can transport continuously and efficiently but require multiple devices to be combined and docked, occupying a large space; although overhead cranes solve the problem of space utilization and can transport vertically, they cannot transport continuously. Vertical elevators are compatible with the advantages of the former two at the same time, and can achieve more efficient transportation of sugar bags in a smaller space.

[0059] Because the sugar bags need to be unpacked and unloaded before the sugar dissolving machine is put into the sugar dissolving machine, the traditional method is mostly to manually unpack the bag mouth and unload the sugar manually. When unloading the sugar, a large amount of sugar powder will be dispersed in the surrounding air. Being in such an environment for a long time will have an impact on the human body. The automatic unpacking machine adopted by the utility model can save a lot of manpower and is more efficient. The sugar powder generated by unloading the sugar will also be sealed inside the machine and processed by a special dust removal device.

[0060] In the utility model, a buffer storage tank is arranged at the rear of the primary and secondary sugar dissolving tanks, so that the newly dissolved syrup can have a buffer fusion process, so that the dissolution of white sugar is more uniform, and the syrup is stabilized at a vertical value. The hot water tank also adopts a water storage method of large and small two-stage hot water tanks. Such a structure can minimize the influence of water flow disturbance when the hot water pump pumps water into the primary large hot water tank on the outlet water flow of the secondary small water tank, so that the water flow at the outlet of the small water tank is more stable, and the constant water flow of the sugar dissolving tank is ensured.

[0061] The primary syrup buffer tank and the secondary sugar dissolving tank are connected by a gravity pipe, and the secondary sugar dissolving tank adopts the bottom feeding method. The gravity pipe adopts a regulating valve to control the flow of the syrup. Through the above structural measures, the syrup can move smoothly, and the various parameter indicators are less affected by external factors, realizing continuous and reliable discharge of the secondary sugar dissolving tank, and providing a precise initial sag value for the final syrup sag adjustment.

[0062] All hot water and steam in the process are provided by air energy heat pumps. In the past, most processes used gas boilers, which were energy-consuming and caused certain pollution to the surrounding air. The final syrup disinfection uses an ultraviolet pipe disinfector, which can reduce toxic damage to operators compared to traditional ozone disinfection and also save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a process flow diagram of the utility model.

[0064] Figure 2 It is a schematic diagram of the overall process structure of the utility model.

[0065] Figure 3This is a schematic diagram of the electrical system connection of the utility model.

[0066] Figure 4 This is a schematic diagram of the sugar hopper material level control process of the utility model.

[0067] Figure 5 This is a schematic diagram of the liquid level control process of a large hot water tank of the utility model.

[0068] Figure 6 This is a schematic diagram of the first-level syrup sag control process of the utility model.

[0069] Figure 7 This is a schematic diagram of the temperature control process of the first-level syrup buffer box of the utility model.

[0070] Figure 8 It is a schematic diagram of the secondary syrup sag control process of the utility model.

[0071] Fig. 9 This is a schematic diagram of the structure of an automatic unpacking machine.

[0072] Fig.10 Schematic diagram of water purification system.

[0073] Fig.11 Schematic diagram of a primary syrup filter. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0075] like Figure 1-Figure 11 As shown, a device for continuous production of liquid syrup:

[0076] I. Sugar bag lifting, conveying and unpacking system; The truck pulls the finished packaged refined white sugar to the sugar warehouse on the first floor of the production workshop. When the syrup production starts, the workers put the sugar bags one by one on the entrance conveyor belt 1.1 of the sugar bag elevator 1. The entrance conveyor belt 1.1 sends the sugar bags to the sugar bag elevator 1. The sugar bag elevator 1 lifts the sugar bags from the first floor of the workshop to the third floor, and then sends the sugar bags to the automatic unpacking machine 2 through the exit conveyor belt 2 1.2. The automatic unpacking machine 2 disassembles the sugar bags to separate the white sugar from the bags, and then unloads the white sugar into the sugar hopper 5.1.

[0077] II. White sugar unloading metering system: White sugar passes through the sugar hopper 5.1 and goes down along the pipeline into the star feeder M0. The real-time flow rate of white sugar is controlled by adjusting the rotation speed of the star feeder M0. There is a solid particle flowmeter CMF1 under the star feeder M0 for measuring and feeding back the real-time flow rate of white sugar, guiding and controlling the rotation speed of the star feeder M0. White sugar passes through the solid particle flowmeter CMF1 and enters the primary sugar dissolving tank 7.

[0078] III. Purified water and air energy heating system: The tap water source enters the purified water system 3 on the 3rd floor of the workshop and is converted into pure water after filtration and disinfection, and then enters the heating system 4 for heating. The heated hot water is then pumped to the large hot water tank 6.1 through the hot water pump P0.

[0079] IV. Hot water inlet metering system: hot water is pumped by hot water pump P0 to the large hot water tank 6.1 and then enters the small water tank 6.2 below, and then flows down from the small water tank along the pipeline into the first-level sugar dissolving tank 7. The actual flow rate of hot water is controlled by adjusting the opening of the pneumatic regulating butterfly valve V1 on the pipeline. There is a liquid electromagnetic flowmeter F2 below the pneumatic regulating butterfly valve V1 to measure and feedback the real-time flow rate of hot water, guiding and controlling the opening of the pneumatic regulating butterfly valve V1.

[0080] V. Primary sugar dissolving tank: White sugar and hot water are controlled by a control system to enter the primary sugar dissolving tank 7 in a certain proportion, and are mixed into primary syrup under the stirring action of the primary sugar dissolving tank stirring device 7.1, and then pumped upward into the primary syrup filter 8 through the primary syrup pump P1.

[0081] VI. Primary syrup filter: After the primary syrup enters the primary syrup filter 8, it is filtered and moves downward into the primary syrup buffer box 10.

[0082] VII. Primary syrup buffer tank and steam heating system: The primary syrup buffer tank 10 is used to temporarily store primary syrup. Since the temperature of the filtered primary syrup will decrease, the saturation of the syrup will decrease, and the sag will also decrease, affecting the subsequent sag adjustment. Therefore, it is necessary to heat the primary syrup in the primary syrup buffer tank 10 through the steam pipeline system 9, and then flow downward through the pipeline to the secondary sugar dissolving tank 11.

[0083] VIII. Secondary sugar dissolving tank and secondary syrup buffer tank: The primary syrup enters the secondary sugar dissolving tank 11 at a higher verticality than the final produced syrup. The inlet of the secondary sugar dissolving tank 11 is connected to a secondary hot water inlet and verticality control system 13. The hot water controls its real-time flow rate through the pneumatic regulating butterfly valve V4 on the inlet pipe. The verticality meter BX measures the verticality of the syrup at the inlet in real time. The verticality value is used to guide the opening of the pneumatic regulating butterfly valve V4 to control the real-time flow rate of the hot water. The primary syrup is diluted with hot water to achieve the required final syrup verticality. The secondary sugar dissolving tank 11 and the secondary syrup buffer tank 12 are connected as a whole. The two tanks are separated by a partition. The bottom surface of the secondary syrup buffer tank 12 is inclined from the partition side of the secondary sugar dissolving tank 11 from top to bottom toward the outlet of the secondary syrup buffer tank 12, so that the secondary syrup flows to the outlet by itself.

[0084] IX. The outlet of the secondary syrup buffer box 12 is connected to the secondary syrup pump P2 by a pipe, and an ultraviolet pipe sterilizer 14 is installed on the pipe to sterilize the secondary syrup. The sterilized secondary syrup is then pumped by the secondary syrup pump P2 to the outlet syrup automatic canning system 15 for canning, storage, and waiting for sale.

[0085] An electrical control connection diagram for continuous production of liquid syrup Figure 3 As shown:

[0086] The electrical control solution consists of:

[0087] PLC system: PLC configuration is S7-300 (315-2PN / DP);

[0088] Wincc host computer control system: The host computer monitoring software is genuine WINCC 7.5;

[0089] Each independent equipment: the sugar bag elevator adopts Jiangsu Kaiwei brand, the automatic bagging machine adopts German IDEAS brand, the sugar scale adopts Guangxi Huaxing brand, the syrup filter adopts Kunming Kelin brand, the syrup filling machine adopts Shanghai Gaoguan brand, and the purified water system adopts Angel brand.

[0090] Detection unit: The liquid level sensor adopts the Welltech brand, the sag meter adopts the Japanese Atuo brand, the temperature sensor adopts the KATU brand, the material level detection adopts the Omron brand capacitive sensor, and the flow meter adopts the Miko brand.

[0091] Motor: Ordinary motors use domestic well-known brands such as Harbin Motor Factory motors and German SEW motors, and variable frequency motors use domestic well-known brands such as Harbin Motor Factory motors;

[0092] Inverter: All inverters are of Japanese Yaskawa brand;

[0093] Valve actuator: All valves are of Japanese SMC brand.

[0094] The PLC system has five subprograms: sugar hopper level control program, large hot water tank level control program, first-level syrup sag control program, first-level syrup buffer tank temperature control program, and second-level syrup sag control program.

[0095] The PLC system is connected to the wincc host computer system through the industrial Ethernet bus. The wincc system is an object-oriented operator visualization operation program that can display the status of all equipment in this production system, the data of each detection point, display fault alarms, trend charts, and automatically generate reports. The operator can also control the start and stop of the corresponding equipment through the host computer system, set the speed of the variable frequency motor, the opening size of each valve, etc. The system can be switched from manual to automatic state through manual-automatic switching to realize automatic production of the system.

[0096] The PLC system collects and feeds back the status signals (such as start, stop, fault, etc.) of each device, motor, and detection unit to the PLC program through the digital input module of Siemens CPU315-2PN / DP.

[0097] The PLC system sends and outputs different control instructions through the digital output module of Siemens CPU315-2PN / DP to control the corresponding equipment, motors, and detection units.

[0098] The PLC system collects the analog signals of each detection unit through the Siemens analog input module SM331 and feeds them back to the PLC program.

[0099] The PLC system sends and outputs different analog signals through the Siemens analog output module SM332 to control the speed of the corresponding equipment or the opening size of the valve.

[0100] The PLC system communicates in series with each independent device and inverter through the PROFINET bus, quickly reads the required data through addressing, and can also control these devices accordingly.

[0101] as follows Figure 4 As shown, the material level control of the sugar hopper: the sugar hopper 5.1 is equipped with a high material level sensor 5.3 and a low material level sensor 5.2. When the current material level signal is detected, the sensor feeds back a switch state signal to the PLC, and the PLC determines the material level state at this time. If the material level sensor detects the material level, the signal is 1, and the signal is 0 when the material level is not detected, then there is the following judgment method:

[0102]

[0103]

[0104] When the PLC determines that it is an empty warehouse signal, it gives a stop signal to the inverter of the star feeder M0, stops the motor of the star feeder M0, and gives a 0% opening signal to the first-level sugar dissolving tank hot water pneumatic regulating butterfly valve V1, closes V1, and stops the water and white sugar. When the PLC determines that there is material (intermediate material level) signal, all processes proceed normally. When the PLC determines that it is a full warehouse signal, it gives a stop signal to the automatic unpacking machine system 2 to stop the work of the automatic unpacking machine system 2, and at the same time stops the action of the front-end sugar bag lifting machine system 1. When the PLC determines that it is an error material level signal, it sends an alarm signal to the control screen to remind the staff to check the working status of the sensor on site. And stop the motor of the star feeder M0, give the first-level sugar dissolving tank hot water pneumatic regulating butterfly valve V10% opening signal, stop the operation of the automatic unpacking machine system 2, and stop the operation of the sugar bag lifting machine system 1.

[0105] as follows Figure 5 As shown, the large hot water tank 6.1 liquid level control: set the required large hot water tank 6.1 target liquid level value (SP hot water level)% on the control screen, measure the current hot water tank process liquid level value (PV hot water level)% by the differential pressure level gauge L1 installed at the bottom of the hot water tank, and feed the measured value back to the PLC. After the PLC program uses the PI control algorithm for calculation, it outputs the given frequency to the frequency converter VFD2 of the hot water pump P0, adjusts the speed of the hot water pump P0, controls the amount of hot water inlet, and keeps the large hot water tank 6.1 liquid level at the set target level.

[0106] as follows Figure 6 As shown, the first-level syrup sag control:

[0107] Definition of sag: Syrup sag is the percentage of dry solids contained in the syrup to the total weight of the syrup, and the calculation formula is: sugar / (sugar+water)×100%.

[0108] Formula calculation: Taking the final required sag value of 60 as an example, the sag of the first-level syrup should be higher than this sag value, which is set to 65 here, then: Msugar / (Msugar+Mwater)×100%=65% Let Msugar+Mwater be 100, that is, when the sag is 65, Msugar is 65, Mwater is 100-65=35, and the weight ratio of sugar and water is: Msugar / Mwater=65 / 35=13:7 Therefore, we only need to control the real-time flow of white sugar and water according to this ratio to obtain a first-level syrup with a sag of 65. According to the above, if the total first-level syrup target flow is set to E(set), the sag is BX(set), the real-time target flow of white sugar under this set value is Msugar(set), and the real-time target flow of hot water is Mwater(set);

[0109] Then: Msugar(setting)+Mwater(setting)=E(setting)①

[0110] Also suppose: M sugar + M water = 100……②

[0111] Then we have: Msugar=BX……③

[0112] M water = 100-BX…④

[0113] Msugar / Mwater=BX / (100-BX)…⑤

[0114] Assume: E(setting) / 100=K, substitute into equation ① and equation ②;

[0115] Then: Msugar (setting) + Mwater (setting) / Msugar + Mwater = k;

[0116] Msugar (setting) + Mwater (setting) = (Msugar + Mwater) k;

[0117] Msugar (setting) + Mwater (setting) = K·Msugar + K·Mwater From the above formula, we can get: Msugar (setting) = K·Msugar; Mwater (setting) = K·Mwater; Substituting into formula ③ and formula ④, we have: Msugar (setting) = K·BX……⑥

[0118] Mwater (setting) = K·(100-BX)………⑦.

[0119] Real-time flow control of white sugar: The required real-time target flow rate of white sugar (SP sugar flow rate) T / h can be obtained from the above formula ⑥. The white sugar solid particle flowmeter CMF installed on the material delivery pipeline measures the current white sugar process flow value (PV sugar flow rate) T / h, and the measured value is fed back to the PLC. After the PLC program uses the PI control algorithm for calculation, the given frequency is output to the inverter VFD1 of the star feeder M0, and the star feeder is adjusted to control the flow rate of white sugar to achieve the required white sugar target flow rate. The measurement principle of the solid flowmeter is based on the physical principle of the Doppler effect. The sensor generates a microwave field in the pipeline, and the microwave is reflected by the particles flowing in the pipeline. The change in frequency and amplitude can accurately measure the solid flow rate. Non-flowing particles such as dust deposition will not be counted.

[0120] Real-time flow control of hot water: The required real-time target flow rate of hot water (SP hot water) T / h can be obtained from the above formula ⑦. The current hot water process flow value (PV hot water) T / h is measured by the first-level sugar dissolving tank hot water flow meter F1 installed on the hot water inlet pipe, and the measured value is fed back to the PLC. After calculation by the PLC program using the PI control algorithm, a 4-20mA signal is output to the actuator of the first-level sugar dissolving tank hot water regulating valve V1, and the opening of the regulating valve is adjusted to control the flow rate of hot water to achieve the required hot water target flow value.

[0121] as follows Figure 7As shown, the temperature control of the first-level syrup buffer box 10 is as follows: the required first-level syrup buffer box syrup target temperature value (SP temperature) ℃ is set on the control screen, and the first-level cache box thermometer T1 installed at the bottom outlet of the first-level syrup cache box is used to measure the current first-level syrup cache box outlet syrup process temperature value (PV temperature) ℃, and the measured value is fed back to the PLC. After the PLC program uses the PI control algorithm for calculation, a 4-20mA signal is output to the actuator of the first-level cache box steam regulating valve V2, and the opening of the regulating valve is adjusted to control the steam flow rate so that the syrup in the first-level syrup cache box reaches the set target temperature value.

[0122] as follows Figure 8 As shown, the secondary syrup sag control:

[0123] Secondary sugar dissolving tank feeding control: In order to ensure that the syrup entering the secondary sugar dissolving tank can be smooth and uniform, a primary cache tank outlet regulating valve V3 and a primary cache tank syrup flowmeter F2 are installed on the pipeline between the primary syrup buffer tank and the secondary sugar dissolving tank. The required target flow rate of the primary syrup entering the secondary sugar dissolving tank (SP primary syrup) T / h can be set on the control screen, and the process flow rate of the primary syrup currently entering the secondary sugar dissolving tank (PV primary syrup) T / h is measured by the primary cache tank syrup flowmeter F2, and the measured value is fed back to the PLC. After calculation by the PLC program using the PI control algorithm, a 4-20mA signal is output to the actuator of the primary cache tank outlet regulating valve V3, and the opening of the regulating valve is adjusted to control the flow rate of the primary syrup so that the primary syrup entering the secondary sugar dissolving tank reaches the set target flow rate.

[0124] Syrup sag control in the secondary sugar soluble tank: There are two important prerequisites for the sag control of the syrup in the secondary sugar soluble tank. First, the syrup entering the secondary sugar soluble tank should be as uniform and stable as possible. Corresponding measures have been taken in the previous control step to ensure the stability of the syrup; second, the sag of the syrup entering the secondary sugar soluble tank should be higher than the final required sag value and can be maintained within a constant sag range. The control method of proportional feeding of sugar water in the primary sugar soluble tank also ensures that the sag of the syrup can be maintained within a constant sag range; on the basis of these two conditions, the syrup with the final required sag value can be obtained by adding hot water to the secondary sugar soluble tank again to dilute the primary syrup. The syrup sag meter BX installed at the bottom of the secondary sugar dissolving tank is used to measure the process sag value (PV sag) BX of the syrup in the secondary sugar dissolving tank. The measured value is fed back to the PLC. After being calculated by the PLC program using the PI control algorithm, a 4-20mA signal is output to the actuator of the hot water valve V4 of the secondary sugar dissolving tank to adjust the opening of the regulating valve and control the flow rate of hot water entering the secondary sugar dissolving tank so that the syrup in the secondary sugar dissolving tank reaches the set target sag value.

[0125] The purified water controller, air energy controller and automatic syrup tank controller are independently controlled devices. The PLC controller communicates and controls these three independent devices through the Profinet bus. It can read their flow, temperature, counting signals, etc., and can control the start and stop of the equipment to achieve interlocking control between various devices, so that each device in the system can be reasonably and effectively monitored.

[0126] The PLC controller can also monitor the two frequency converters of the hot water pump and the star feeder through the Profinet bus. By reading the frequency and status signals of the frequency converter and connecting the signals sent back by each guidance sensor, the PLC program uses the PI adjustment algorithm to adjust the frequency of the frequency converter to achieve control of the water level of the large hot water tank and the flow rate of white sugar.

Claims

1. A device for continuous production of liquid syrup, characterized in that: It comprises a sugar bag elevator (1), which runs through the 1st to 3rd floors of the workshop, and is connected to an automatic unpacking machine (2) installed on the 3rd floor of the workshop through a conveyor at the 3rd floor exit, and the unpacking machine (2) is connected downward to a sugar bucket (5.1) on the 2nd floor of the workshop at its exit; The refined white sugar unloading metering system (5) is located on the first floor of the workshop. The refined white sugar unloading metering system (5) is connected to the sugar hopper (5.1) upwards through a pipeline, and is connected to the primary sugar dissolving box (7) downwards; A purified water system (3) is arranged on the third floor of the workshop, an air energy heating system (4) is arranged at the outlet of the purified water system (3), a hot water pump P0 is arranged at the outlet of the heating system (4), and the hot water pump P0 is connected to a first-level hot water inlet and metering system (6); the first-level hot water inlet and metering system (6) is connected downward to a first-level sugar dissolving tank (7), and the sugar inlet and water inlet systems are connected to the top of the first-level sugar dissolving tank (7); The outlet of the first-level sugar dissolving tank (7) is connected to the inlet of the first-level syrup filter (8) through a pipe; the outlet of the first-level syrup filter (8) is connected to the top inlet of the first-level syrup buffer tank (10) through a pipe; one end of the steam pipeline system (9) is connected to the steam inlet of the first-level syrup buffer tank (10), and the other end is connected to the steam generator; the outlet of the first-level syrup buffer tank (10) is connected to the bottom inlet of the second-level sugar dissolving tank (11) through a pipe; one end of the second-level hot water inlet and vertical control system (13) is connected to the large hot water tank, and the other end is connected to the water inlet of the second-level sugar dissolving tank (11); the outlet of the second-level syrup buffer tank (12) is connected to the outlet syrup automatic canning system (15) through a pipe, and the second ultraviolet pipeline sterilizer (14) is installed on the pipeline between the second-level syrup buffer tank (12) and the outlet syrup automatic canning system (15).

2. The device for continuous production of liquid syrup according to claim 1, characterized in that: The sugar bag elevator (1) is a vertical lifting device, and the sugar bucket (5.1) is an inverted square cone storage bucket; the purified water system (3) is an independent water purification system, and the hot water pump P0 is connected to a large hot water tank of the first-level hot water inlet and metering system (6) located on the third floor of the workshop through a pipe; a syrup pump P1 is arranged at the outlet of the first-level sugar dissolving tank (7) and is connected upwardly by a pipe to the inlet of the first-level syrup filter (8) located on the second floor of the workshop; the outlet of the first-level syrup filter (8) is connected downwardly by a pipe to the top of the first-level syrup buffer tank (10) on the first floor of the workshop. The first-level syrup buffer box (10) is connected to the bottom entrance of the second-level sugar-dissolving box (11) located on the first floor of the workshop by a pipe, and the large hot water tank is located on the third floor of the workshop; the second-level syrup buffer box (12) and the second-level sugar-dissolving box (11) are connected as a whole, and the two boxes are separated by a partition; the outlet of the second-level syrup buffer box (12) is connected to the outlet syrup automatic canning system (15) located on the first floor of the workshop by a pipe, and the second ultraviolet pipe sterilizer (14) is installed on the pipe between the second-level syrup buffer box (12) and the outlet syrup automatic canning system (15).

3. The device for continuous production of liquid syrup according to claim 1, characterized in that: The sugar bag elevator (1) transports the sugar bags from the first layer to the third layer. A conveyor belt 1 (1.1) is arranged at the entrance of the sugar bag elevator (1) for transporting the white sugar bags into the sugar bag elevator (1). A conveyor belt 2 (1.2) is arranged at the exit of the sugar bag elevator (1) for transporting the sugar bags lifted to the third layer into the automatic unpacking machine (2) at the rear end. The automatic unpacking machine (2) comprises a conveying device (2.1), a guiding device (2.2), a cutting device (2.3), a dust removal device (2.4), an unpacking machine casing (2.5), a bag discharging device (2.6), and a material discharging device (2.7); The conveying device (2.1) is an upward conveyor belt, which is located at the front end of the entrance of the automatic unpacking machine (2). A guide device (2.2) is arranged at the end of the conveying device (2.1), and the guide device (2.2) is connected to the body of the unpacking machine (2). A cutting device (2.3) is installed at the entrance of the body of the unpacking machine (2). A discharging device (2.7) is arranged below the body of the unpacking machine (2), a dust removal device (2.4) is arranged above the body, and a spiral bag discharging device (2.6) is arranged at the rear of the body. The bottom of the discharging device (2.7) below the body is a sugar bucket (5.1).

4. The device for continuous production of liquid syrup according to claim 1, characterized in that: The white sugar unloading and metering system (5) has a sugar hopper (5.1) on the upper part, the sugar hopper (5.1) is located below the automatic unpacking machine (2), a material level detection element 1 (5.2) is installed on the lower part of the sugar hopper (5.1), and a material level detection element 2 (5.3) is installed on the upper part, the material level detection element 1 (5.2) is used to detect the low material level state of the sugar hopper (5.1), and the material level detection element 2 (5.3) is used to detect the high material level state of the sugar hopper (5.1), the lower part of the sugar hopper (5.1) is connected to the primary sugar dissolving box (7) through a vertical pipeline, and a star feeder M0 and a solid particle flow meter CMF1 are installed on the pipeline; The installation positions of the star feeder M0 and the solid particle flow meter CMF1 are close to the primary sugar dissolving tank (7), and the star feeder M0 is driven by a variable frequency motor.

5. The device for continuous production of liquid syrup according to claim 1, characterized in that: The water purification system (3) purifies the tap water source into purified water for production that meets the edible standard. The water purification system (3) comprises a raw water tank (3.1), a raw water pump (3.2), a sand tank (3.3), a carbon tank (3.4), a precision filter (3.5), a high-pressure pump (3.6), an osmotic membrane system (3.7), a pure water tank (3.8) and a water supply pump (3.10) which are connected in sequence; an ozone generator (3.9) is arranged on the pure water tank (3.8); The osmotic membrane system (3.7) is a four-stage filtration system composed of four reverse osmosis filters, each of which is cylindrical in shape. The outlet of the pure water tank (3.8) is connected to a water supply pump (3.10) by a pipe, and an ultraviolet pipe sterilizer (3.11) is installed on the pipe; The heating system (4) is placed at the outlet of the purified water system (3) and connected via a channel. The heating system (4) heats the water source purified by the purified water system (3).

6. The device for continuous production of liquid syrup according to claim 1, characterized in that: A large hot water tank (6.1) is arranged on the upper part of the first-level hot water inlet and metering system (6), and a hot water pump P0 is arranged between the inlet of the large hot water tank (6.1) and the outlet of the heating system (4), which are connected by a pipeline. The hot water pump P0 is driven by a variable frequency motor. A liquid level meter L1 is installed on the outer side of the tank body of the large hot water tank (6.1) for guiding the frequency converter of the hot water pump P0. A small water tank (6.2) is arranged below the large hot water tank (6.1). The lower part of the small water tank (6.2) is also connected to the first-level sugar dissolving tank (7) by a vertical pipeline. A pneumatic regulating butterfly valve V1 is installed on the upper part of the pipeline, and a liquid electromagnetic flow meter F2 is installed on the lower part.

7. The device for continuous production of liquid syrup according to claim 1, characterized in that: The first-level sugar dissolving box (7) is a closed tank, the upper part of which is cylindrical and the lower part is conical. A stirring motor M1 is installed on the top to drive a stirring device 1 (7.1) inside the first-level sugar dissolving box (7). A first-level syrup pump P1 is arranged at the outlet of the first-level sugar dissolving box (7). The outlet of the first-level syrup pump P1 is connected to the inlet of the first-level syrup filter (8) by a pipeline. The primary syrup filter (8) filters out coarse sand impurities in the primary syrup to make the primary syrup purer. The primary syrup filter (8) is composed of three cylindrical filters (8.1); Each cylindrical filter 1 (8.1) has a layer of cylindrical filter 2 (8.2) arranged along the cylinder wall. The cylindrical filter 2 (8.2) separates the interior of the cylindrical filter 1 (8.1) into two chambers, an inner chamber and an outer chamber. A sealing cover (8.3) is provided on the top. A feed pipe (8.4) is connected to the bottom of the inner chamber. The feed pipes of the cylindrical filter 1 (8.1) are centrally connected to the main feed pipe (8.5). A feed valve (8.6) is installed on each feed pipe (8.4). ), the outer cavity is connected to the main discharge pipe (8.8) through the discharge pipe (8.7), each discharge pipe (8.7) is installed with a discharge valve (8.9), the discharge pipe (8.7) of the cylindrical filter 2 (8.2) is centrally connected to the main discharge pipe (8.8), and the cylindrical filter 1 (8.1) is installed with a pressure detection device (8.10), which is arranged on the top of the cover plate of each cylindrical filter 1 (8.1) and is used to detect the syrup pressure in each filtering device; The outlet of the primary syrup filter (8) is provided with a pipe downwardly connected to the syrup inlet of the primary syrup buffer box (10).

8. The device for continuous production of liquid syrup according to claim 1, characterized in that: The first-level syrup buffer box (10) is a cylindrical sealed tank, which is placed on the first floor, with the bottom resting on a higher steel frame structure so that it is in a high position. A stirring motor M2 is installed on the top to drive the stirring device 2 (10.1) inside the first-level syrup buffer box (10). A temperature sensor T1 is installed at the outlet of the first-level syrup buffer box (10) to detect the outlet syrup temperature. A steam pipe is connected to the box body. The steam pipeline system (9) is composed of an air-energy steam generator (9.1) and a steam pipeline. Steam is generated by the air-energy steam generator and enters the steam pipeline of the primary syrup buffer box (10). The steam pipeline is divided into three inlets, namely, upper, middle and lower inlets, to enter the primary syrup buffer box (10). The pipeline inside the primary syrup buffer box (10) is annular. The bottom of the primary syrup buffer box (10) is connected to the bottom of the secondary sugar dissolving box (11) located on the ground of the first floor by a pipeline, and a pneumatic regulating butterfly valve V3 and an electromagnetic flowmeter F2 are installed on the pipeline.

9. The device for continuous production of liquid syrup according to claim 8, characterized in that: The secondary sugar dissolving box (11) and the secondary syrup buffer box (12) are connected as one body, and the two boxes are separated by a partition, the lower part of the partition is sealed with the box, and the upper part is open, and the secondary sugar dissolving box (11) is a thin and tall structure, the secondary sugar dissolving box (11) is bottom-fed, and a stirring motor M3 is installed on the top of the secondary sugar dissolving box (11) to drive the stirring device three (11.1) inside the secondary sugar dissolving box (11), and a sag meter BX is installed at the bottom of the secondary sugar dissolving box (11) near the syrup inlet to measure the sag of the syrup in real time, and a hot water pipe is also connected to the bottom of the box, and the hot water pipe is connected to the large hot water tank (6.1); The secondary hot water inlet and sag control system (13) consists of a hot water pipe connected to the large hot water tank (6.1) at the top and connected to the secondary sugar dissolving tank (11) near the syrup inlet at the bottom, with a small water tank 2 (13.1) in the middle as a buffer. A pneumatic regulating butterfly valve V4 is installed at the water inlet from the hot water pipe to the secondary sugar dissolving tank (11); The inlet of the secondary syrup buffer box (12) is the gap on the upper part of the partition separated from the secondary sugar dissolving box (11), and the outlet is located at the bottom of the side of the box body. The bottom surface of the box body is inclined from the partition side of the secondary sugar dissolving box (11) from top to bottom toward the outlet of the secondary syrup buffer box (12). The outlet of the secondary syrup buffer box (12) is connected to the secondary syrup pump P2 by a pipe, and an ultraviolet pipe sterilizer 2 (14) is installed on the pipe for sterilizing and disinfecting the secondary syrup.

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