Multistage cyclone separator for drying kudzu starch

Abstract

The utility model discloses a kudzu root starch multistage cyclone separation drying machine, including preheating structure, the tank body inner chamber upper portion and lower portion of preheating structure all are fixed with first baffle, its inside and located between two first baffle and fixed with six second baffle, every second baffle all are equipped with the air vent, the inside of tank body is provided with a plurality of even distribution's heat exchange pipe, every heat exchange pipe all penetrates all baffle, and the upper portion of tank body is provided with air inlet and waste gas outlet, and its lower portion is provided with air outlet and waste gas inlet, this drying machine can heat the heat exchange pipe in the tank body through the waste gas inlet and imports the tank body of preheating structure to the high temperature waste gas produced in the drying process, through the air from the air inlet and is introduced into the tank body of just entering the equipment, makes it from the heat exchange pipe inside through, can utilize the thermal energy in the high temperature waste gas and preheats the air that just enters, has realized the recycling of heat energy, has reduced energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of kudzu starch production technology, specifically a multi-stage cyclone separator and dryer for kudzu starch. Background Technology

[0002] In the production and processing of kudzu starch, the drying process is a crucial step, as its effectiveness directly affects the quality, storage stability, and subsequent processing applications of the kudzu starch. Traditional kudzu starch drying methods mostly employ airflow dryers, which use flowing hot air to move and dry the wet starch within pipes. A cyclone separator is then used to separate the dried starch from the air. This method is simple in structure and features high heat transfer coefficient, large heat transfer area, and short drying time. However, existing airflow dryers have low thermal energy utilization rates when drying kudzu starch, and a large amount of heat energy is ultimately emitted directly into the environment with the exhaust gas, resulting in significant energy waste and increased production costs.

[0003] Therefore, we have designed a multi-stage cyclone separator and dryer for kudzu starch to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-stage cyclone separator and dryer for kudzu starch, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage cyclone separator and dryer for kudzu starch, comprising a preheating structure, the preheating structure comprising a tank, wherein first partitions are fixed at the upper and lower parts of the inner cavity of the tank, and six second partitions are fixed inside the tank and between the two first partitions, each second partition having an air vent, and multiple evenly distributed heat exchange tubes are arranged inside the tank, each heat exchange tube penetrating all the first and second partitions, and each heat exchange tube being fixed to two first partitions, the upper part of the tank having an air inlet and an exhaust gas outlet, and the lower part having an air outlet and an exhaust gas inlet, and an air filter, a blower, an air heater, a primary cyclone separator, a secondary cyclone separator, a bag filter, and an induced draft fan are arranged next to the tank.

[0006] As a preferred embodiment of this utility model, the air filter is connected to the inlet of the blower, the outlet of the blower is connected to the air inlet of the tank through a pipe, the air outlet of the tank is connected to the inlet of the air heater through a pipe, the outlet of the air heater is connected to the inlet of the first-stage cyclone separator through a connecting pipe, the outlet of the first-stage cyclone separator is connected to the inlet of the second-stage cyclone separator through a pipe, the outlet of the second-stage cyclone separator is connected to the inlet of the bag filter through a pipe, the outlet of the bag filter is connected to the exhaust gas inlet of the tank through a pipe, and the exhaust gas outlet of the tank is connected to the inlet of the induced draft fan through a pipe.

[0007] As a preferred embodiment of this utility model, the connecting pipe is provided with a feed inlet, and a screw feeder is provided next to it. The outlet of the screw feeder is connected to the feed inlet of the connecting pipe. A drying pipe is also provided on the connecting pipe, and the drying pipe is located between the feed inlet of the connecting pipe and the first-stage cyclone separator.

[0008] As a preferred embodiment of this invention, the air inlet is located above the first partition plate on the upper part of the tank.

[0009] As a preferred embodiment of this invention, the air outlet is located below the first partition at the bottom of the tank.

[0010] As a preferred embodiment of this utility model, the exhaust gas inlet is located between the first and second partitions at the bottom of the tank.

[0011] As a preferred embodiment of this utility model, the exhaust gas outlet is located between the first and second partitions at the top of the tank.

[0012] As a preferred embodiment of this utility model, the vents on two adjacent second partitions are staggered.

[0013] Compared with the prior art, this utility model provides a multi-stage cyclone separator and dryer for kudzu starch, which has the following beneficial effects:

[0014] Compared to traditional airflow dryers, this multi-stage cyclone separator and dryer for kudzu starch features a preheating structure. By introducing the high-temperature waste gas generated during the drying process into the tank of the preheating structure through the waste gas inlet, the heat exchange tubes inside the tank can be heated. By introducing the air that has just entered the equipment into the tank through the air inlet, it passes through the inside of the heat exchange tubes, and the heat energy in the high-temperature waste gas can be used to preheat the air that has just entered, thus realizing the recovery and utilization of heat energy and reducing energy consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is a front sectional view of the preheating structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the partition distribution of this utility model.

[0018] Reference numerals: 1. Preheating structure; 101. Tank body; 102. First baffle; 103. Second baffle; 104. Heat exchange tube; 105. Air inlet; 106. Air outlet; 107. Exhaust gas inlet; 108. Exhaust gas outlet; 2. Air filter; 3. Blower; 4. Air heater; 5. Primary cyclone separator; 6. Secondary cyclone separator; 7. Bag filter; 8. Exhaust fan; 9. Connecting pipe; 10. Screw feeder; 11. Drying pipe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-3In this embodiment: the kudzu starch multi-stage cyclone separator dryer includes a preheating structure 1, which includes a tank 101. First partitions 102 are fixed to the upper and lower parts of the inner cavity of the tank 101. Six second partitions 103 are fixed inside the tank 101 and between the two first partitions 102. Each second partition 103 has an air vent, and the air vents on adjacent second partitions 103 are staggered. Multiple evenly distributed heat exchange tubes 104 are arranged inside the tank 101, and each heat exchange tube 104 penetrates all the first and second partitions 102. The tank body 101 has two first partitions 102, and each heat exchange tube 104 is fixed to one of the two first partitions 102. An air inlet 105 and an exhaust gas outlet 108 are located at the top of the tank body 101, while an air outlet 106 and an exhaust gas inlet 107 are located at the bottom. The air inlet 105 is located above the first partition 102 at the top of the tank body 101, the air outlet 106 is located below the first partition 102 at the bottom of the tank body 101, the exhaust gas inlet 107 is located between the first partition 102 and the second partition 103 at the bottom of the tank body 101, and the exhaust gas outlet 108 is located at the first partition 102 at the top of the tank body 101. Between the second partition 103 and the tank body 101, an air filter 2, a blower 3, an air heater 4, a primary cyclone separator 5, a secondary cyclone separator 6, a bag filter 7, and an induced draft fan 8 are arranged next to the tank body 101. The air filter 2 is connected to the inlet of the blower 3. The outlet of the blower 3 is connected to the air inlet 105 of the tank body 101 via a pipe. The air outlet 106 of the tank body 101 is connected to the inlet of the air heater 4 via a pipe. The outlet of the air heater 4 is connected to the inlet of the primary cyclone separator 5 via a connecting pipe 9. A feed inlet is provided on the connecting pipe 9. A screw feeder 10 is provided on one side. The outlet of the screw feeder 10 is connected to the inlet of the connecting pipe 9. A drying pipe 11 is also provided on the connecting pipe 9. The drying pipe 11 is located between the inlet of the connecting pipe 9 and the first-stage cyclone separator 5. The outlet of the first-stage cyclone separator 5 is connected to the inlet of the second-stage cyclone separator 6 through a pipe. The outlet of the second-stage cyclone separator 6 is connected to the inlet of the bag filter 7 through a pipe. The outlet of the bag filter 7 is connected to the exhaust gas inlet 107 of the tank 101 through a pipe. The exhaust gas outlet 108 of the tank 101 is connected to the inlet of the induced draft fan 8 through a pipe.

[0021] Example 1: When the multi-stage cyclone separator and dryer for kudzu starch is working, the air filter 2 first filters the incoming air to remove impurities and dust. The filtered air is then pressurized by the blower 3 and enters the tank 101 through the air inlet 105 at the top of the tank 101 via a pipeline. The air then passes through the heat exchange tube 104 and finally flows out from the air outlet 106 at the bottom of the tank 101. The air flowing out from the air outlet 106 enters the air heater 4 for further heating. The heated air is then transported through the connecting pipe 9, which is equipped with a feed inlet. The screw feeder 10 can transport the kudzu starch to be dried to the feed inlet of the connecting pipe 9, allowing the kudzu starch to enter the connecting pipe 9. After entering the connecting pipe 9, the kudzu starch enters the drying tube 11 under the action of the hot air for drying. Afterward, the hot air carrying the kudzu starch enters the first-stage cyclone separator 5. Inside the first-stage cyclone separator 5, the kudzu starch is dried under the action of centrifugal force. Separated from the air, the separated kudzu starch is discharged from the outlet at the bottom of the primary cyclone separator 5, while the air enters the secondary cyclone separator 6 through a pipe from the outlet of the primary cyclone separator 5 for further separation. The air separated by the secondary cyclone separator 6 then enters the bag filter 7, which performs fine filtration to remove residual kudzu starch particles. The filtered exhaust gas enters the tank 101 from the exhaust gas inlet 107 at the bottom of the tank 101 and exchanges heat with the heat exchange tube 104 inside the tank 101, thereby preheating the air passing through the heat exchange tube 104. During this process, the flow of exhaust gas is affected by the position of the vent on the second baffle 103, resulting in a serpentine flow within the tank 101, which greatly increases the residence time of the exhaust gas in the tank 101 to ensure sufficient heat exchange between the exhaust gas and the heat exchange tube 104. Finally, the exhaust gas enters the induced draft fan 8 through a pipe, and the induced draft fan 8 discharges the exhaust gas from the system.

[0022] Example 2: Based on Example 1, this example further optimizes the dryer. Temperature sensors are installed at both the inlet and outlet of the air heater 4 to monitor the air temperature after preheating and heating in real time. A control cabinet is installed next to the dryer. The blower 3, air heater 4, induced draft fan 8, and screw feeder 10 are all controlled by the control cabinet. The detection results of the temperature sensors are also transmitted to the control cabinet. When the temperature sensor detects that the hot air temperature is lower than the set value, it transmits the detection to the control cabinet, which controls the air heater 4 to increase the heating temperature. When the temperature sensor detects that the hot air temperature is higher than the set value, it transmits the detection to the control cabinet, which controls the air heater 4 to decrease the heating temperature, thereby realizing intelligent control of the hot air temperature.

[0023] Example 3: Based on Example 1, this example optimizes the heat exchange tube 104. The heat exchange tube 104 is made of copper. Copper tubes have excellent thermal conductivity, which can transfer heat more efficiently. In addition, copper tubes have strong corrosion resistance and are not easily corroded by oxygen in the air. Furthermore, the heat exchange tube 104 can be a coil, which can increase the residence time of air in the tank 101, thereby improving the preheating effect.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-stage cyclone separator and dryer for kudzu starch, comprising a preheating structure (1), characterized in that: The preheating structure (1) includes a tank (101). First partitions (102) are fixed to the upper and lower parts of the inner cavity of the tank (101). Six second partitions (103) are fixed inside the tank (101) between the two first partitions (102). Each second partition (103) has a vent. Multiple evenly distributed heat exchange tubes (104) are arranged inside the tank (101). Each heat exchange tube (104) penetrates all the first partitions (102) and second partitions. The tank (101) is equipped with a plate (103) and each heat exchange tube (104) is fixed to two first partition plates (102). The upper part of the tank (101) is provided with an air inlet (105) and an exhaust gas outlet (108), and the lower part is provided with an air outlet (106) and an exhaust gas inlet (107). An air filter (2), a blower (3), an air heater (4), a primary cyclone separator (5), a secondary cyclone separator (6), a bag filter (7), and an induced draft fan (8) are provided next to the tank (101).

2. The multi-stage cyclone separator and dryer for kudzu starch according to claim 1, characterized in that: The air filter (2) is connected to the inlet of the blower (3). The outlet of the blower (3) is connected to the air inlet (105) of the tank (101) through a pipe. The air outlet (106) of the tank (101) is connected to the inlet of the air heater (4) through a pipe. The outlet of the air heater (4) is connected to the inlet of the first-stage cyclone separator (5) through a connecting pipe (9). The air outlet of the first-stage cyclone separator (5) is connected to the inlet of the second-stage cyclone separator (6) through a pipe. The air outlet of the second-stage cyclone separator (6) is connected to the inlet of the bag filter (7) through a pipe. The outlet of the bag filter (7) is connected to the exhaust gas inlet (107) of the tank (101) through a pipe. The exhaust gas outlet (108) of the tank (101) is connected to the inlet of the induced draft fan (8) through a pipe.

3. The multi-stage cyclone separator and dryer for kudzu starch according to claim 2, characterized in that: The connecting pipe (9) is provided with a feed inlet, and a screw feeder (10) is provided next to it. The outlet of the screw feeder (10) is connected to the feed inlet of the connecting pipe (9). A drying pipe (11) is also provided on the connecting pipe (9). The drying pipe (11) is located between the feed inlet of the connecting pipe (9) and the first-stage cyclone separator (5).

4. The multi-stage cyclone separator and dryer for kudzu starch according to claim 1, characterized in that: The air inlet (105) is located above the first partition (102) on the upper part of the tank body (101).

5. The multi-stage cyclone separator and dryer for kudzu starch according to claim 1, characterized in that: The air outlet (106) is located below the first partition (102) at the bottom of the tank body (101).

6. The multi-stage cyclone separator and dryer for kudzu starch according to claim 1, characterized in that: The exhaust gas inlet (107) is located between the first partition (102) and the second partition (103) at the bottom of the tank (101).

7. The multi-stage cyclone separator and dryer for kudzu starch according to claim 1, characterized in that: The exhaust gas outlet (108) is located between the first partition (102) and the second partition (103) on the upper part of the tank (101).

8. The multi-stage cyclone separator and dryer for kudzu starch according to claim 1, characterized in that: The vents on two adjacent second partitions (103) are staggered.

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