Solid and liquid dual-purpose vacuum belt dryer

Abstract

The utility model discloses a solid and liquid dual-purpose type vacuum belt dryer which comprises a drying barrel, a feeding device, a vacuumizing pipe, a swing type liquid spray head, a high-pressure pump, a drying device and a discharging system, and a first drying device, a second drying device, a third drying device and a fourth drying device are arranged in the drying barrel from top to bottom. Swing type liquid nozzles are arranged on the upper right portion of the third drying device and the upper right portion of the fourth drying device respectively. The first drying device and the second drying device are used for drying solid materials, and the third drying device and the fourth drying device are used for drying liquid materials; a first discharging system is arranged below the left end of the second drying device; and a second discharging system is arranged below the left ends of the third drying device and the fourth drying device.

Description

[0001] Technology Frontier

[0002] This utility model relates to the field of vacuum drying equipment technology, specifically to a vacuum belt dryer that can be used for both solids and liquids. Background Technology

[0003] Vacuum belt dryers are widely used for drying solid and liquid materials in industries such as traditional Chinese medicine, dairy products, light industry, chemicals, and starch. Currently, there are two types of vacuum belt dryers on the market: one for drying solid materials and the other for drying liquid materials. This often requires companies to equip themselves with both types, resulting in high investment costs. Furthermore, equipping two vacuum belt dryers occupies a large area of ​​factory space. Summary of the Invention

[0004] This invention addresses the aforementioned shortcomings by providing a dual-purpose vacuum belt dryer for both solids and liquids that requires low investment costs and occupies minimal factory space.

[0005] This utility model is implemented as follows: A vacuum belt dryer for both solids and liquids includes a drying cylinder, a feeding device, a vacuum tube, a swing-type liquid nozzle, a high-pressure pump, a drying device, a discharge system, and a cutting mechanism. The feeding device is equipped with a solid material feeding bin, a screw distributor, and an intermittent star-shaped distributor. The feeding device is connected to the top wall of the left end of the drying cylinder through its lower opening. The drying device is elongated, with a driven wheel and a driving wheel at its left and right ends, respectively. The driving wheel is driven by a variable frequency motor. A conveyor belt is connected to the driving wheel and the driven wheel. A heating plate is located below the upper layer of the conveyor belt. The inlet of the swing-type liquid nozzle is connected to the outlet of a high-pressure pump through a hose. The inlet of the high-pressure pump is connected to a liquid tank through a pipe. Inside the drying cylinder, from top to bottom, are a first drying device, a second drying device, a third drying device, and a fourth drying device. A swing-type liquid nozzle is located on the upper right side of each of the third and fourth drying devices. The first and second drying devices are used for... Solid materials are dried, while the third and fourth drying devices are used to dry liquid materials. A first discharge system is located below the left end of the second drying device. This first discharge system consists of a first hopper located below the left end of the second drying device. A first discharge screw cylinder is horizontally connected to the lower part of the first hopper. Both ends of the connected first discharge screw cylinder extend from the horizontal sides of the drying cylinder. A pulverizer is connected to the bottom wall of the outer end of the first discharge screw cylinder extending outside the drying cylinder. The lower opening of the pulverizer is connected to a first receiving tank. A second discharge system is located below the left end of the third and fourth drying devices. This second discharge system consists of a second hopper located below the left end of the third and fourth drying devices. A second discharge screw cylinder is horizontally connected to the lower part of the second hopper. Both ends of the connected second discharge screw cylinder extend from the horizontal sides of the drying cylinder. A second pulverizer is connected to the bottom wall of the outer end of the second discharge screw cylinder extending outside the drying cylinder. The lower opening of the second pulverizer is connected to a second receiving tank.

[0006] With the above structure, the drying cylinder is equipped with a first and a second drying device for drying solid materials, and also with a third and a fourth drying device for drying liquid materials. Simultaneously, a first discharge system is located below the left end of the second drying device, and a second discharge system is located below the left ends of the third and fourth drying devices. In this way, enterprises only need to equip themselves with one dual-purpose solid and liquid vacuum belt dryer to dry solid materials, liquid materials, or both simultaneously, thus solving the problems of high investment costs and large factory space requirements associated with requiring two vacuum belt dryers.

[0007] Figure 1This is a schematic diagram of the structure of the solid and liquid dual-purpose vacuum belt dryer of this utility model;

[0008] Figure 2 yes Figure 1 The left view of the dual-purpose vacuum belt dryer for both solids and liquids shown.

[0009] In the diagram: 1. Solid material feeding hopper; 2. Screw distributor; 3. Intermittent star-shaped distributor; 4. Drying cylinder; 5. Conveyor belt; 6. Heating plate; 7. Drive wheel; 8. Variable frequency motor; 9. Swinging liquid nozzle; 9a. Hose; 9b. High-pressure pump; 10. Vacuum pipe; 11. Support leg; 14. Second hopper; 15. Second discharge system; 16. Second receiving tank; 17. Second crusher; 18. First discharge system; 19. First receiving tank; 20. Crusher; 21. First discharge screw drum; 22. First hopper; 23. Support; 24. Feeding device; 51. First drying device; 52. Second drying device; 53. Third drying device; 54. Fourth drying device; 71. Driven wheel; 211. Second discharge screw drum. Detailed Implementation

[0010] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0011] like Figures 1 to 2 As shown, a support 23 is provided on the upper left side of the drying cylinder 4, and a feeding device 24 is connected to the support 23. The feeding device 24 is equipped with a solid material feeding bin 1, a screw distributor 2, and an intermittent star-shaped feeder 3. Since this feeding device is existing technology, it will not be described in detail here. The feeding device 24 is connected to the drying cylinder 4 through the lower opening of the intermittent star-shaped feeder 3 at its lower part. Inside the drying cylinder 4, from top to bottom, there are a first drying device 51 and a second drying device 52 in the shape of long strips. The left and right ends of the first drying device 51 are respectively provided with a driven wheel 71 and a driving wheel 7. The driving wheel 7 is driven by a variable frequency motor 8. A conveyor belt 5 is connected to the driving wheel 7 and the driven wheel 71. A heating plate 6 is provided below the upper layer of the conveyor belt 5. The right end of the second drying device 52 is slightly longer than the right end of the first drying device 51. The driving wheel 7 on the first drying device 51 drives the conveyor belt 5 to rotate to the right, and the driving wheel on the second drying device 52 drives the conveyor belt to rotate to the left. A first discharge system 18 is provided below the left end of the second drying device 52 inside the drying cylinder 4. The first discharge system 18 consists of a first hopper 22 located below the left end of the second drying device 52. A first discharge spiral cylinder 21 is laterally connected to the lower part of the first hopper 22, and both ends of the connected first discharge spiral cylinder 21 extend from the lateral sides of the drying cylinder 4. Figure 2As can be seen, a pulverizer 20 is connected to the bottom wall of the outer end of the first discharge spiral cylinder 21 extending outside the drying cylinder 4. The upper opening of the pulverizer 20 communicates with the inner cavity of the first discharge spiral cylinder 21, and the lower opening of the pulverizer 20 is connected to a first receiving tank 19. Below the second drying device 52, a third drying device 53 and a fourth drying device 54 are arranged in sequence. The structure of the third drying device 53 and the fourth drying device 54 is basically the same as that of the first drying device 51. Each of the third drying device 53 and the fourth drying device 54 has a swing-type liquid nozzle 9 on its upper right side. The inlet of the swing-type liquid nozzle 9 is connected to the outlet of a high-pressure pump 9b through a hose 9a. The inlet of the high-pressure pump 9b is connected to a liquid tank (not shown) through a pipe. A cutting mechanism (not shown) is provided near the left end of the third drying device 53 and the fourth drying device 54. This cutting mechanism is existing technology. A second discharge system 15 is provided below the left end of the third drying device 53 and the fourth drying device 54. The second discharge system 15 consists of a second hopper 14 located below the left end of the third and fourth drying devices. A second discharge spiral cylinder 211 is horizontally positioned at the lower part of the second hopper 14. Both ends of the connected second discharge spiral cylinder 211 extend from the horizontal sides of the drying cylinder 4. A second pulverizer 17 is connected to the bottom wall of the outer end of the second discharge spiral cylinder 211. The upper opening of the second pulverizer 17 communicates with the inner cavity of the second discharge spiral cylinder 211, and the lower opening of the second pulverizer 17 is connected to a second receiving tank 16. A vacuum pipe 10 is connected to the top wall of the right end of the drying cylinder 4, and four support legs 11 are provided at the bottom of the drying cylinder 4. Working principle: After solid material enters the solid material feeding hopper 1 of the feeding device 24, it is dispersed and falls onto the conveyor belt 5 of the first drying device 51 under the action of the screw distributor 2 and the intermittent star-shaped distributor 3. At the same time, hot water is circulated in the heating plate 6 to heat and evaporate the moisture in the solid material on the conveyor belt 5. The evaporated water vapor is drawn away by the vacuum pipe 10. Meanwhile, the variable frequency motor 8 drives the drive wheel 7 to rotate to the right at a set speed, thereby moving the upper layer of the conveyor belt 5 to the right. Then, the solid material falls from the right end of the conveyor belt 5 onto the conveyor belt of the second drying device 52. At the same time, the variable frequency motor on the second drying device 52 rotates to the left at a set speed, causing the upper layer of the conveyor belt of the second drying device to move to the left. This causes the dried solid material to fall from the left end of the second drying device 52 into the first hopper 22 of the first discharge system. The solid material in the first hopper 22 is sent to the crusher 20 for crushing by the first discharge screw drum 21 and then falls into the first receiving tank 19.

[0012] The two swing-type liquid nozzles 9 on the upper right of the third and fourth drying devices spray liquid material onto the conveyor belts of the third and fourth drying devices under the action of the high-pressure pump 9b. At the same time, the variable frequency motors of the third and fourth drying devices rotate to the left at the set speed, causing the upper layer of the conveyor belts of the third and fourth drying devices to move to the left. Under the action of the heating plate 6 of the third and fourth drying devices, when the liquid material on the conveyor belt reaches the left end outlet, it has become plate-shaped hardened material. As the hardened material comes out from the left end of the conveyor belt, it is continuously cut by the cutter of the cutting mechanism. The hardened material cut into small pieces falls into the second hopper 14 of the second discharge system. The hardened material in the second hopper 14 is sent to the second crusher 17 by the second discharge screw 211 for crushing, and then falls into the second receiving tank 16.

Claims

1. A dual-purpose vacuum belt dryer for solids and liquids, comprising a drying cylinder, a feeding device, a vacuum pipe, a swing-type liquid nozzle, a high-pressure pump, a drying unit, a discharge system, and a cutting mechanism. The feeding device is equipped with a solid material feeding bin, a screw distributor, and an intermittent star-shaped distributor. The feeding device is connected to the top wall of the left end of the drying cylinder through its lower opening. The drying unit is elongated, with a driven wheel and a driving wheel at its left and right ends, respectively. The driving wheel is driven by a variable frequency motor. A conveyor belt is connected to the driving wheel and the driven wheel. A heating plate is located below the upper layer of the conveyor belt. The inlet of the swing-type liquid nozzle is connected to the outlet of a high-pressure pump via a hose. The inlet of the high-pressure pump is connected to a liquid tank via a pipe. The dryer is characterized by: The drying cylinder (4) is equipped with a first drying device (51), a second drying device (52), a third drying device (53), and a fourth drying device (54) from top to bottom inside. A swing-type liquid nozzle (9) is provided on the upper right side of each of the third drying device (53) and the fourth drying device (54). The first drying device (51) and the second drying device (52) are used to dry solid materials, while the third drying device (53) and the fourth drying device (54) are used to dry liquid materials. A first discharge system (18) is provided below the left end of the second drying device (52). The first discharge system (18) consists of a first hopper (22) located below the left end of the second drying device (52). A first discharge spiral cylinder (21) is horizontally connected to the lower part of the first hopper (22). The two ends of the connected first discharge spiral cylinder (21) discharge from the drying cylinder (4) respectively. The first discharge spiral cylinder (21) extends outward from the drying cylinder (4) on both sides. The bottom wall of the outer end of the first discharge spiral cylinder (21) extending outward from the drying cylinder (4) is connected to a crusher (20). The lower opening of the crusher (20) is connected to a first receiving tank (19). A second discharge system (15) is provided below the left end of the third drying device (53) and the fourth drying device (54). The second discharge system (15) is provided by providing a second hopper (14) below the left end of the third and fourth drying devices. The lower part of the second hopper (14) is provided with a second discharge spiral cylinder (211) in a horizontal direction. The two ends of the connected second discharge spiral cylinder (211) extend outward from the drying cylinder (4) on both sides. The bottom wall of the outer end of the second discharge spiral cylinder (211) extending outward from the drying cylinder (4) is connected to a second crusher (17). The lower opening of the second crusher (17) is connected to a second receiving tank (16).

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