Solid and liquid dual-purpose vacuum belt dryer

Abstract

The invention discloses a solid and liquid dual-purpose 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

[0002] The invention relates to the technical field of vacuum drying equipment, in particular to a vacuum belt drying machine for both solid and liquid. Background Art

[0003] Vacuum belt dryers are widely used in the drying of solid and liquid materials in industries such as traditional Chinese medicine, dairy products, light industry, chemical industry, starch, etc. At present, there are two types of vacuum belt dryers on the market, one is a vacuum belt dryer for drying solid materials, and the other is a vacuum belt dryer for drying liquid materials. In this way, many companies have to equip both solid and liquid vacuum belt dryers at the same time, resulting in high investment costs, and equipping two vacuum belt dryers will occupy a large plant area. Summary of the invention

[0004] The present invention aims at solving the above-mentioned shortcomings and provides a vacuum belt dryer for solid and liquid dual-purpose which has low investment cost and occupies a small plant area.

[0005] The present invention is implemented as follows: a vacuum belt dryer for dual use of solids and liquids, comprising a drying cylinder, a feeding device, a vacuum pipe, a swinging liquid nozzle, a high-pressure pump, a drying device, a discharging system and a cutting mechanism, the feeding device is provided 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 in the shape of an elongated strip, a driven wheel and a driving wheel are respectively provided at the left and right ends of the drying device, the driving wheel is driven by a variable frequency motor, a transmission belt is connected to the driving wheel and the driven wheel, a heating plate adjacent to the upper layer of the transmission belt is provided below the upper layer, the inlet of the swinging 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 material tank through a pipeline, the interior of the drying cylinder is provided with a first drying device, a second drying device, a third drying device and a fourth drying device from top to bottom, and a swinging liquid nozzle is respectively provided at the upper right of the third drying device and the fourth drying device; the first drying device and the second drying device are used for solid The liquid material is dried, and the third drying device and the fourth drying device are used to dry the liquid material; a first discharging system is provided below the left end of the second drying device, and the first discharging system is provided in that a first hopper is provided below the left end of the second drying device, and a first discharging spiral drum is transversely penetrated through the lower part of the first hopper, and two ends of the first discharging spiral drum after connection respectively extend from the transverse sides of the drying cylinder body, and the bottom wall of the outer end of the first discharging spiral drum extending out of the drying cylinder body is connected to a crusher, and the lower opening of the crusher is connected to a first material receiving tank; a second discharging system is provided below the left end of the third drying device and the fourth drying device, and the second discharging system is provided in that a second hopper is provided below the left ends of the third and fourth drying devices, and a second discharging spiral drum is transversely provided at the lower part of the second hopper, and two ends of the second discharging spiral drum after connection respectively extend from the transverse sides of the drying cylinder body, and the bottom wall of the outer end of the second discharging spiral drum extending out of the drying cylinder body is connected to a second crusher, and the lower opening of the second crusher is connected to a second material receiving tank.

[0006] With the above structure, the drying cylinder is provided with a first drying device and a second drying device for drying solid materials, and the drying cylinder is also provided with a third drying device and a fourth drying device for drying liquid materials; at the same time, a first discharging system is provided below the left end of the second drying device, and a second discharging system is provided below the left ends of the third drying device and the fourth drying device. In this way, the enterprise only needs to equip one vacuum belt dryer for both solid and liquid to dry solid materials, or to dry liquid materials, or to dry both solid materials and liquid materials at the same time, thereby solving the problem of high investment cost and large plant area occupied due to the need to equip two vacuum belt dryers.

[0007] Figure 1It is a structural schematic diagram of a vacuum belt dryer for both solid and liquid use according to the present invention;

[0008] Figure 2 yes Figure 1 The left side view of the solid and liquid dual-purpose vacuum belt dryer is shown.

[0009] In the figure: 1. solid material feeding bin; 2. screw distributor; 3. intermittent star distributor; 4. drying cylinder; 5. conveyor belt; 6. heating plate; 7. driving wheel; 8. frequency conversion motor; 9. swing liquid nozzle; 9a. hose; 9b. high pressure pump; 10. vacuum tube; 11. support foot; 14. second hopper; 15. second discharging system; 16. second receiving tank; 17. second crusher; 18. first discharging system; 19. first receiving tank; 20. crusher; 21. first discharging spiral drum; 22. first hopper; 23. bracket; 24. feeding device; 51. first drying device; 52. second drying device; 53. third drying device; 54. fourth drying device; 71. driven wheel; 211. second discharging spiral drum. DETAILED DESCRIPTION

[0010] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0011] like Figure 1 to Figure 2 As shown, a bracket 23 is provided on the left end of the drying cylinder 4, and a feeding device 24 is connected to the bracket 23. The feeding device 24 is provided with a solid material feeding bin 1, a screw distributor 2 and an intermittent star-shaped distributor 3. Since the feeding device is a prior art, it is not described in detail here; the feeding device 24 is connected to the drying cylinder 4 through the lower opening of the intermittent star-shaped distributor 3 at its lower part; the interior of the drying cylinder 4 is provided with a first drying device 51 and a second drying device 52 in a long strip shape from top to bottom. The left and right ends of the first drying device 51 are respectively provided with a driven wheel 71 and a driving wheel 7, which are driven by a frequency conversion motor 8. A conveyor belt 5 is connected to the driving wheel 7 and the driven wheel 71, and a heating plate 6 adjacent to the upper layer of the conveyor belt 5 is provided below; 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 rightward, and the driving wheel on the second drying device 52 drives the conveyor belt to rotate leftward. A first discharging system 18 is provided at the lower left end of the second drying device 52 inside the drying cylinder 4. The first discharging system 18 is provided with a first hopper 22 at the lower left end of the second drying device 52. A first discharging spiral drum 21 is horizontally connected to the lower part of the first hopper 22. The two ends of the first discharging spiral drum 21 are respectively extended from the lateral sides of the drying cylinder 4. Figure 2It can be seen that the bottom wall of the outer end of the first discharge spiral drum 21 extending out of the drying cylinder 4 is connected to a pulverizer 20, and the upper opening of the connected pulverizer 20 is communicated with the inner cavity of the first discharge spiral drum 21, and the lower opening of the pulverizer 20 is connected to a first material receiving tank 19. A third drying device 53 and a fourth drying device 54 are arranged in sequence below the second drying device 52, and the structures of the third drying device 53 and the fourth drying device 54 are basically the same as the structure of the first drying device 51; a swinging liquid nozzle 9 is arranged at the upper right of the third drying device 53 and the fourth drying device 54, and the inlet of the swinging liquid nozzle 9 is connected to the outlet of a high-pressure pump 9b through a hose 9a, and the inlet of the high-pressure pump 9b is connected to a liquid material tank (not shown) through a pipeline; a cutting mechanism (not shown) is arranged near the left end of the third drying device 53 and the fourth drying device 54, and the cutting mechanism is a prior art. A second discharging system 15 is provided below the left ends of the third drying device 53 and the fourth drying device 54. The second discharging system 15 is provided by providing a second hopper 14 below the left ends of the third and fourth drying devices. A second discharging spiral drum 211 is provided laterally at the lower part of the second hopper 14. The two ends of the connected second discharging spiral drum 211 extend from the lateral sides of the drying cylinder 4 respectively. The bottom wall of the outer end of the second discharging spiral drum 211 extending outside the drying cylinder 4 is connected to a second crusher 17. The upper opening of the connected second crusher 17 is communicated with the inner cavity of the second discharging spiral drum 211. The lower opening of the second crusher 17 is connected to a second material receiving tank 16. A vacuum tube 10 is connected to the top wall of the right end of the drying cylinder 4. Four legs 11 are provided at the bottom of the drying cylinder 4. Working principle: after the solid material enters the solid material feeding bin 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 distributor 3. At the same time, hot water is passed through the heating plate 6 to heat and evaporate the moisture in the solid material on the conveyor belt 5, and the evaporated water vapor is extracted by the vacuum tube 10. At the same time, the frequency conversion motor 8 drives the driving wheel 7 to rotate right at a set speed, so that the upper layer of the conveyor belt 5 moves to the right, and then the solid material falls from the right end of the conveyor belt 5 to the conveyor belt of the second drying device 52. At the same time, the frequency conversion motor on the second drying device 52 rotates to the left at a set speed, so that the upper layer of the conveyor belt of the second drying device moves to the left, and then the dried solid material falls from the left end of the second drying device 52 to the first hopper 22 of the first discharging system. The solid material in the first hopper 22 is sent to the crusher 20 by the first discharging spiral cylinder 21 for crushing and then falls into the first receiving tank 19.

[0012] The two swinging liquid nozzles 9 on the upper right of the third drying device and the fourth drying device spray liquid materials onto the conveyor belts of the third and fourth drying devices respectively under the action of the high-pressure pump 9b. At the same time, the frequency conversion motors of the third and fourth drying devices rotate to the left at the set speed, so that the upper layer of the conveyor belts of the third and fourth drying devices moves 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 a plate-shaped hardened material. During the process of the hardened material coming 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 discharging system. The hardened material in the second hopper 14 is sent to the second crusher 17 by the second discharging spiral drum 211 for crushing, and then falls into the second receiving tank 16.

Claims

1. A vacuum belt dryer for both solid and liquid, comprising a drying cylinder, a feeding device, a vacuum pipe, a swinging liquid nozzle, a high-pressure pump, a drying device, a discharging system and a cutting mechanism, wherein the feeding device is provided with a solid material feeding bin, a screw distributor and an intermittent star-shaped distributor, and 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 in an elongated shape, and a driven wheel and a driving wheel are respectively provided at the left and right ends of the drying device, the driving wheel is driven by a variable frequency motor, a conveyor belt is connected to the driving wheel and the driven wheel, and a heating plate adjacent to the upper layer of the conveyor belt is provided below the upper layer, the inlet of the swinging liquid nozzle is connected to the outlet of a high-pressure pump through a hose, and the inlet of the high-pressure pump is connected to a liquid material tank through a pipeline, and the characteristics are: The interior of the drying cylinder (4) is provided 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, and a swinging liquid nozzle (9) is provided at the upper right 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, and 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), and the first discharge system (18) is provided by providing a first hopper (22) at the lower left end of the second drying device (52), and a first discharge spiral drum (21) is connected to the lower part of the first hopper (22) in a horizontal direction, and the two ends of the first discharge spiral drum (21) are connected from the drying cylinder (4) respectively. ), the bottom wall of the outer end of the first discharge spiral drum (21) extending from the outside of the drying cylinder (4) is connected to a crusher (20), and the lower opening of the crusher (20) is connected to a first material receiving tank (19); a second discharge system (15) is provided below the left ends of the third drying device (53) and the fourth drying device (54), wherein the second discharge system (15) is provided by providing a second hopper (14) below the left ends of the third and fourth drying devices, and a second discharge spiral drum (211) is provided laterally at the lower part of the second hopper (14), and the two ends of the connected second discharge spiral drum (211) extend from the lateral sides of the drying cylinder (4) respectively, and the bottom wall of the outer end of the second discharge spiral drum (211) extending from the outside of the drying cylinder (4) is connected to a second crusher (17), and the lower opening of the second crusher (17) is connected to a second material receiving tank (16).

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