Anhydrous glucose drying system

Abstract

The utility model provides an anhydrous dextrose drying system which comprises a drying box, a feeding port of the drying box is connected with a conveying auger, an air inlet of the drying box is connected with an air outlet of an air heat exchanger, a precision filter is arranged at the upper end of the drying box, and the upper portion of the precision filter is a waste heat buffer box formed through separation. An outlet of the waste heat buffer box is connected with an exhaust fan, and an air guide disc used for guiding flow of hot air is arranged in the drying box. Hot air is guided to be in better contact with materials, the heat exchange time of the hot air and the materials is prolonged, meanwhile, the precision filter is arranged, the hot air after heat exchange can be exhausted in real time in the drying process, small powdery particles are intercepted, products are prevented from being taken away by the air, and therefore the yield of the products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of anhydrous glucose drying in starch sugar production, in particular to an anhydrous glucose drying system. Background Art

[0002] Drying of glucose powder is a relatively important link in the production of anhydrous glucose. The whole process has a great impact on the whole production because of the different production processes and equipment. Anhydrous glucose is very easy to absorb moisture in the stage of not being completely dried, which will seriously affect the product quality. In particular, the energy consumption required in the whole drying stage is relatively large. The use of reasonable production processes and production equipment can greatly reduce the consumption of steam and electricity, stabilize product quality, and improve product yield. At the same time, it can also bring greater economic benefits to production enterprises and provide a new way for the drying of anhydrous glucose.

[0003] At present, most manufacturers use vibrating fluidized beds to dry anhydrous glucose. These devices generally have some problems in the actual production process. The drying temperature and time are not easy to control. Too high drying temperature will make the color of anhydrous glucose darker and the sugar gelatinize, while too low temperature will lead to incomplete drying of glucose and uneven particles. Too long drying time will also cause the color of glucose to be dull and the product quality to be poor. Too short drying time will cause excessive moisture content and make it difficult to store. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides an anhydrous glucose drying system, whose drying time and drying temperature are very easy to control, thereby reducing the difficulty of operation, ensuring the stability of product quality, while reducing energy consumption and improving product yield.

[0005] The technical solution provided by the utility model is: an anhydrous glucose drying system, comprising a drying box, wherein the feed port of the drying box is connected to a conveying auger, the air inlet of the drying box is connected to the air outlet of an air heat exchanger, a precision filter is arranged above the interior of the drying box, the upper part of the precision filter is a waste heat buffer box formed by separation, the outlet of the waste heat buffer box is connected to an exhaust fan, and an air guide plate for guiding hot air is arranged inside the drying box.

[0006] Furthermore, a motor with a reducer is arranged on the top of the drying box, a stirring blade extending into the drying box is arranged at the output end of the motor, a discharge inspection valve is arranged at the bottom of the drying box, and a discharge air shutoff is arranged on the conical bottom side of the drying box.

[0007] Furthermore, a temperature sensor is provided in the drying box, the air inlet of the air heat exchanger is connected to the blower, the steam pipeline is connected to the air heat exchanger, and a steam regulating control valve is provided on the steam pipeline.

[0008] Furthermore, the temperature sensor and the steam regulating control valve are connected to a PLC control system, and the temperature sensor and the steam regulating control valve are interlocked and controlled.

[0009] Furthermore, the air heat exchanger is composed of one or more groups of heat exchanger plates, and an air filter is installed between the blower and the air heat exchanger.

[0010] Furthermore, the blower and the exhaust fan are both frequency-controlled, and the speed and power are adjusted according to the running state of the material inside the drying box, and the fan inlet and outlet are softly connected.

[0011] Furthermore, two groups of precision filters are provided, and an observation mirror is provided on the surface of the drying box.

[0012] Beneficial effects of the utility model:

[0013] (1) An air guide plate is installed inside the drying box, so that the air after heat exchange can enter the drying box at a certain flow rate and direction, forming turbulence inside the drying box, better contact with the material, extending the heat exchange time between the hot air and the material, and making the material particles in the box present a boiling state, increasing the heat exchange surface area of ​​the material. This improves the drying efficiency, greatly reduces the use of steam, and reduces energy consumption.

[0014] (2) Two sets of precision filters are installed above the drying box. During the drying process, the hot air after heat exchange can be discharged in real time and small powder particles can be intercepted to prevent the product from being carried away by the air, thereby ensuring the product yield.

[0015] (3) A temperature sensor is installed inside the drying box to display the temperature inside the drying box in real time. At the same time, the temperature sensor is interlocked with the steam regulating valve to set the optimal drying temperature and feed back the temperature inside the drying box to the steam regulating valve in real time to achieve automatic control.

[0016] (4) A heat exchanger is used to exchange heat between cold air and hot air. The heated air is introduced into the drying box through a blower, and an air filter is installed in front of the heat exchanger to ensure that the hot air in contact with the material is clean, thereby ensuring the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] In the figure: 1-drying box, 2-conveyor auger, 3-motor, 4-mixing blade, 5-observation mirror, 6-discharge air shutoff, 7-blower, 8-air heat exchanger, 9-air guide plate, 10-precision filter, 11-waste heat buffer box, 12-exhaust fan, 13-discharge inspection valve, 14-steam pipeline, 15-steam regulating control valve, 16-temperature sensor. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific implementation methods, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limiting the present invention. In order to better illustrate the specific implementation methods of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific implementation methods of the present invention, all other specific implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1 An anhydrous glucose drying system is shown, comprising a drying box 1, wherein the feed port of the drying box 1 is connected to a conveying auger 2, the air inlet of the drying box 1 is connected to an air outlet of an air heat exchanger 8, a precision filter 10 is arranged above the interior of the drying box 1, the upper part of the precision filter 10 is a waste heat buffer box 11 formed by separation, the outlet of the waste heat buffer box 11 is connected to an exhaust fan 12, and an air guide plate 9 for guiding hot air is arranged inside the drying box 1.

[0023] A motor 3 with a reducer is provided on the top of the drying box 1, and a stirring blade 4 extending into the drying box 1 is provided at the output end of the motor 4. A discharge inspection valve 13 is provided at the bottom of the drying box 1. Before each startup or shutdown, the discharge inspection valve 13 needs to be opened for emptying to ensure the quality of the product after operation.

[0024] The side of the cone bottom of the drying box 1 is provided with a discharge air lock 6. The interior of the drying box 1 and the material contact parts are made of stainless steel to ensure that the product meets the hygiene standards. The aperture size on the air guide plate 9 must be uniform and can be increased or decreased according to the production capacity. The air guide plate 9 is a split combination, fixed at the bottom of the drying box 1, and can be regularly inspected or replaced according to production needs.

[0025] A temperature sensor 16 is provided in the drying box 1, the air inlet of the air heat exchanger 8 is connected to the blower 7, the steam pipe 14 is connected to the air heat exchanger 8, and a steam regulating control valve 15 is provided on the steam pipe 14. The temperature sensor 16 and the steam regulating control valve 15 are connected to the PLC control system, and the temperature sensor 16 and the steam regulating control valve 15 are interlocked and controlled. The temperature sensor 16 can transmit temperature data to the PLC system in real time, and the signal is fed back to the steam regulating control valve 15 through the PLC system. The steam regulating control valve 15 adjusts the opening degree of the valve in real time according to the change of the temperature of the drying box 1 to adjust the amount of steam to achieve the purpose of controlling the temperature. The system drying temperature can also be set in the PLC system, and the start, operation and stop of various equipment can be remotely controlled, realizing the automatic control of the temperature of the entire drying system, greatly improving the work efficiency and ensuring the stability of product quality.

[0026] The air heat exchanger 8 is composed of one or more groups of heat exchanger plates, and an air filter is installed between the blower 7 and the air heat exchanger 8. The air filter can use single-stage filtration or multi-stage filtration according to the needs of the product to meet the needs of the product. At the same time, the heat source of the air heat exchanger is not limited to steam, and other media can also be used to heat the air.

[0027] The blower 7 and the exhaust fan 12 are both frequency-controlled, and the speed and power are adjusted according to the running state of the material inside the drying box. The fan inlet and outlet are softly connected to prevent damage to pipelines and equipment caused by vibration caused by the operation of the fan.

[0028] The precision filter 10 is provided with two groups, and the precision filter 10 is fixed at the upper end of the drying box. Its main function is to prevent small glucose particles from being discharged with the air during the drying process. The precision filter can effectively intercept small particles of glucose powder and allow hot air to be discharged more smoothly. An observation mirror 5 is provided on the surface of the drying box 1.

[0029] When the utility model is used specifically, the glucose powder (water content 3%-5%) from the previous process enters the conveying auger 2 through the feed port, is sent into the interior of the drying box 1 through the conveying auger 2, and is driven by the motor 3 to rotate the stirring blade 4 at high speed, so that the glucose powder is evenly thrown around the drying box 1.

[0030] The steam pipe 14 from the public works is connected to the air heat exchanger 8. The blower 7 delivers the filtered external air to the air heat exchanger 8. Through the control of the steam regulating control valve 15, the cold air is heated by the heat exchanger, and the hot air temperature is controlled to be about 110°C before entering the drying box 1. The hot air is evenly distributed around the drying box through the air guide plate 9 inside the drying box 1, and heat is exchanged with the glucose powder entering the upper part of the drying box 1. Under the action of the turbulent air mass, the material will be dried quickly, and the moisture content will be quickly reduced from 3%-5% to about 1%, and then discharged to the next packaging process through the discharge air lock 6 on the lower side of the drying box 1. The humid hot air after heat exchange enters the waste heat buffer box 11 through the precision filter 10 to preheat the glucose powder about to enter the drying box 1. The waste gas after reuse is discharged to the outside by the exhaust fan 12.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anhydrous glucose drying system, comprising a drying oven (1), characterized in that: The feed port of the drying box (1) is connected to the conveying auger (2), the air inlet of the drying box (1) is connected to the air outlet of the air heat exchanger (8), a precision filter (10) is arranged above the interior of the drying box (1), the upper part of the precision filter (10) is a waste heat buffer box (11) formed by separation, the outlet of the waste heat buffer box (11) is connected to the exhaust fan (12), and an air guide plate (9) for guiding hot air is arranged inside the drying box (1).

2. The anhydrous glucose drying system according to claim 1, characterized in that: A motor (3) with a reducer is arranged on the top of the drying box (1), a stirring blade (4) extending into the drying box (1) is arranged at the output end of the motor (3), a discharge inspection valve (13) is arranged at the bottom of the drying box (1), and a discharge air shutoff device (6) is arranged on the side of the conical bottom of the drying box (1).

3. The anhydrous glucose drying system according to claim 1, characterized in that: A temperature sensor (16) is provided in the drying box (1), an air inlet of the air heat exchanger (8) is connected to the blower (7), a steam pipe (14) is connected to the air heat exchanger (8), and a steam regulating control valve (15) is provided on the steam pipe (14).

4. The anhydrous glucose drying system according to claim 3, characterized in that: The temperature sensor (16) and the steam regulating control valve (15) are connected to a PLC control system, and the temperature sensor (16) and the steam regulating control valve (15) are interlocked and controlled.

5. The anhydrous glucose drying system according to claim 3, characterized in that: The air heat exchanger (8) is composed of one or more groups of heat exchanger plates, and an air filter is installed between the blower (7) and the air heat exchanger (8).

6. The anhydrous glucose drying system according to claim 3, characterized in that: The blower (7) and the exhaust fan (12) are both frequency-controlled, and the rotation speed and power are adjusted according to the running state of the material inside the drying box, and the fan inlet and outlet are softly connected.

7. The anhydrous glucose drying system according to claim 1, characterized in that: The precision filters (10) are provided in two groups, and an observation mirror (5) is provided on the surface of the drying box (1).

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