A continuous volatile drying device for high-moisture materials

Abstract

This utility model discloses a continuous evaporation drying device for high-moisture materials, relating to the field of drying technology. It includes: a feeding mechanism, a pre-drying mechanism, a spiral drying mechanism, and a discharging mechanism. The feeding mechanism stores the material and discharges it from its lower end. The inlet of the pre-drying mechanism is connected to its lower end; after entering the pre-drying mechanism, the material is moved parallel to a discharge cylinder. A hot air inlet pipe is connected to the side of the discharge cylinder, and a first air outlet pipe is connected to the end of the pre-drying mechanism closest to the feeding mechanism. The spiral drying mechanism is connected below the discharge cylinder, and a second air outlet pipe is provided at the upper end of the spiral drying mechanism on the side furthest from the discharge cylinder. The spiral drying mechanism is used to dry the material. The discharging mechanism discharges the material and is connected to the end of the spiral drying mechanism furthest from the discharge cylinder, transporting the material to the discharging mechanism. This utility model can reduce the energy consumption of drying.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, and in particular to a continuous volatilization drying device for high-moisture materials. Background Technology

[0002] Most existing drying equipment uses hot air or hot flue gas as the drying medium, drying materials through direct or indirect heat exchange. When drying materials with high moisture content, high temperatures (above 150°C) are generally used to accelerate drying, resulting in significant heat loss. Typically, the drying heat medium is heated to the required temperature from room temperature before being used to dry the material. Because of the large temperature difference between the exhaust temperature and room temperature, significant energy waste is likely, which is detrimental to energy conservation. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a continuous volatile matter drying device for high-moisture materials, which can reduce the energy consumption of drying.

[0004] A high-moisture continuous volatile drying device for materials according to a first aspect of this utility model includes: a feeding mechanism, a pre-drying mechanism, a spiral drying mechanism, and a discharging mechanism. The feeding mechanism is used to store materials and can discharge the materials from its lower end. The inlet of the pre-drying mechanism is connected to the lower end of the feeding mechanism. After entering the pre-drying mechanism, the materials are moved parallel to a discharge cylinder. A hot air inlet pipe is connected to the side of the discharge cylinder, and a first air outlet pipe is connected to the end of the pre-drying mechanism near the feeding mechanism. The spiral drying mechanism is connected below the discharge cylinder, and a second air outlet pipe is provided at the upper end of the side of the spiral drying mechanism away from the discharge cylinder. The spiral drying mechanism is used to dry the materials. The discharging mechanism is used to discharge the materials and is connected to the end of the spiral drying mechanism away from the discharge cylinder. The spiral drying mechanism can transport the materials to the discharging mechanism.

[0005] According to an embodiment of this utility model, a continuous volatile drying device for high-moisture materials has at least the following beneficial effects: before entering the spiral drying mechanism, the material first enters the pre-drying mechanism for pre-drying. Compared with using the spiral drying mechanism 400 and the pre-drying mechanism 200 separately, the advantage of using them in combination is that the drying load of a single mechanism is small, and the low-grade heat energy can be fully utilized. The drying requirements can be met even with lower-temperature hot air, and the lower the temperature of the hot air used, the less heat loss due to heat dissipation from the equipment casing, effectively saving energy.

[0006] According to some embodiments of the present invention, the spiral drying mechanism includes a conveying cylinder, a propeller blade, and a first power unit. One end of the conveying cylinder is connected to the lower end of the discharge cylinder, and the other end is connected to the discharge mechanism. The propeller blade is rotatably installed in the conveying cylinder. A heating channel is provided inside the propeller blade, and hot air is introduced into the heating channel. The first power unit is used to drive the propeller blade to rotate. When the propeller blade rotates, it can dry the material and drive the material to move towards the discharge mechanism.

[0007] According to some embodiments of this utility model, the first power unit output shaft is connected to an installation pipe, the propeller blade is arranged around the installation pipe, the installation pipe is connected to the heating flow channel, and a rotary joint is provided at the end of the installation pipe, the rotary joint being connected to an external heating pipeline.

[0008] According to some embodiments of the present invention, a crusher is provided inside the discharge mechanism, and the crusher is used to crush the material passing through the discharge mechanism.

[0009] According to some embodiments of the present invention, the pre-drying mechanism includes a drying cylinder and a conveyor belt. The conveyor belt is rotatably installed inside the drying cylinder. A second power unit for driving the conveyor belt to move is provided outside the drying cylinder. The conveyor belt is used to receive the material discharged by the feeding mechanism and transport it to the discharge cylinder.

[0010] According to some embodiments of the present invention, a baffle plate is provided on the inner wall of the drying cylinder, the baffle plate being used to prevent the material from moving in the opposite direction on the conveyor belt.

[0011] According to some embodiments of the present invention, a plurality of dividing gears are installed at intervals in the drying drum. The dividing gears are rotatably installed in the drying drum and abut against the conveyor belt to divide the material on the conveyor belt. The plurality of dividing gears are arranged alternately along the transport direction of the material.

[0012] According to some embodiments of the present invention, a material scraper is installed inside the drying cylinder, the material scraper is located below the conveyor belt, a material scraper opening is opened at the bottom of the drying cylinder, the material scraper can move back and forth along the transport direction of the material, and the material scraper cleans the material scattered at the bottom of the drying cylinder to the material scraper opening for discharge.

[0013] According to some embodiments of the present invention, the feeding mechanism includes a hopper and a screw feeder, the screw feeder being located at the bottom of the hopper and used to discharge the material in the hopper.

[0014] According to some embodiments of this utility model, a rod-type disperser is provided in the funnel. When the rod-type disperser rotates, it can disperse and break up the material in the funnel, making the screw feeder discharge more smoothly.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the installation structure of one embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of a feeding mechanism according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of a rod-type dispersant according to an embodiment of the present invention.

[0021] Icon labels:

[0022] Feeding mechanism 100, hopper 110, screw feeder 120, bar-type disperser 130;

[0023] Pre-drying mechanism 200, drying cylinder 201, conveyor belt 202, second power unit 203, first air outlet pipe 210;

[0024] 300 feed cylinder, 310 hot air inlet pipe;

[0025] Spiral drying mechanism 400, conveying cylinder 401, propeller blade 402, first power unit 403, mounting pipe 404, second air outlet pipe 410;

[0026] Discharge mechanism 500;

[0027] baffle plate 600;

[0028] 700 splitting gear;

[0029] Material handling boom 800;

[0030] The grating opening is 900. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 4As shown, an embodiment of the present invention provides a continuous evaporation drying device for high-moisture materials, comprising: a feeding mechanism 100, a pre-drying mechanism 200, a spiral drying mechanism 400, and a discharging mechanism 500. The feeding mechanism 100 is used to store materials, which are temporarily stored in the feeding mechanism 100 after entering to meet the needs of continuous feeding. The feeding mechanism 100 can discharge materials from its lower end. The inlet of the pre-drying mechanism 200 is connected to the lower end of the feeding mechanism 100. The material output from feed mechanism 100 enters pre-drying mechanism 200. After entering pre-drying mechanism 200, the material is moved parallel to discharge cylinder 300. Hot air inlet pipe 310 is connected to the side of discharge cylinder 300. A first air outlet pipe 210 is connected to the end of pre-drying mechanism 200 closest to feed mechanism 100. Hot air entering through hot air inlet pipe 310 passes through pre-drying mechanism 200 and exits through first air outlet pipe 210. During its passage through pre-drying mechanism 200, the hot air carries away moisture from the material, drying it. The direction of movement of hot air in pre-drying mechanism 200 is opposite to the direction of movement of material in pre-drying mechanism 200. Spiral drying mechanism 400 is connected below discharge cylinder 300. After leaving pre-drying mechanism 200, material falls from discharge cylinder 300 into spiral drying mechanism 400. A second air outlet pipe 410 is provided at the upper end of the spiral drying mechanism 400 on the side away from the discharge cylinder 300. Hot air input through the hot air inlet pipe 310 passes through the spiral drying mechanism 400 and is discharged from the second air outlet pipe 410. The direction of movement of the hot air in the spiral dryer is the same as the direction of movement of the material in the spiral dryer. The spiral drying mechanism 400 is used to dry materials; before entering the spiral drying mechanism 400, the material first enters the pre-drying mechanism 200 for pre-drying, which is more thorough. Compared with not pre-drying, lower temperature hot air can be used for drying, making full use of low-grade heat energy. The discharge mechanism 500 is used to discharge materials. The discharge mechanism 500 is connected to the end of the spiral drying mechanism 400 away from the discharge cylinder 300, and the spiral drying mechanism 400 can transport materials to the discharge mechanism 500. The spiral drying mechanism 400 serves both transport and drying functions. After the material passes through the pre-drying mechanism 200, some of the internal moisture is removed, but some moisture remains. Therefore, it needs to be dried again by the spiral drying mechanism 400 to fully dry the material. Compared to using the spiral drying mechanism 400 and the pre-drying mechanism 200 alone, the advantage of using them together is that the drying load of a single mechanism is small, and the drying requirements can be met even with lower-temperature hot air. The lower the temperature of the hot air used, the less heat loss due to heat dissipation from the equipment casing, effectively saving energy.

[0036] Reference Figures 1 to 4As shown, the spiral drying mechanism 400 includes: a conveying cylinder 401, a propeller blade 402, and a first power unit 403. The conveying cylinder 401 is a stainless steel cylinder. One end of the conveying cylinder 401 is connected to the lower end of the discharge cylinder 300, and the other end is connected to the discharge mechanism 500. The material in the discharge cylinder 300 enters the conveying cylinder 401 under the action of gravity. The propeller blade 402 is rotatably installed in the conveying cylinder 401, and the rotating spiral blades push the material for spiral conveying. A heating channel is provided inside the propeller blade 402, and a hot air flow is introduced into the heating channel. The hot air flow is selected as hot air or superheated steam. The hot air flow heats the propeller blade 402, thereby indirectly heating and drying the material. By heating the material with the propeller blade 402 and heating the material with hot air, these two heating methods are used simultaneously, effectively removing all moisture from the material in the conveying cylinder 401, so that the material is completely dried. The first power unit 403 drives the propeller blade 402 to rotate. The first power unit 403 can be either an electric motor or an internal combustion engine, depending on the actual situation. When the propeller blade 402 rotates, it dries the material and moves it towards the discharge mechanism 500. In addition to heating the material, the propeller blade 402 also propels the material, and its structure is compact.

[0037] Reference Figures 1 to 4 As shown, the output shaft of the first power unit 403 is connected to a mounting pipe 404 via a coupling. The propeller blade 402 is arranged around the mounting pipe 404, which is hollow and communicates with a heating channel. A rotary joint is provided at the end of the mounting pipe 404, which is connected to an external heating pipeline. Since the mounting pipe 404 rotates during operation, a rotary joint capable of achieving a rotary seal is needed to connect the mounting pipe 404 and the external heating pipeline. The external heating pipeline inputs hot air or superheated steam into the mounting pipe 404 through the rotary joint. The hot air or superheated steam flows through the mounting pipe 404 into the heating channel to heat the propeller blade 402.

[0038] Reference Figures 1 to 4 As shown, it can be understood that a crusher is installed within the discharge mechanism 500, which is used to crush the material passing through the discharge mechanism 500. The specific structure and installation method of the crusher are existing technologies and will not be described in detail. Due to the use of the propeller blade 402 for transportation, the material will have significant agglomeration during drying and transportation by the propeller blade 402, which is not conducive to subsequent processing and transportation. Therefore, the material needs to be crushed during discharge. The crusher will further crush the material delivered here and transport it to the next process.

[0039] Reference Figures 1 to 4As shown, the pre-drying mechanism 200 includes a drying cylinder 201 and a conveyor belt 202. The drying cylinder 201 is a rectangular cylinder made of stainless steel. The conveyor belt 202 is rotatably installed inside the drying cylinder 201 and is horizontally positioned. Two rollers are rotatably installed inside the drying cylinder 201 for the conveyor belt 202 to wind around. A second power unit 203 is provided outside the drying cylinder 201 to drive the conveyor belt 202. The second power unit 203 can be an electric motor or an internal combustion engine, depending on the actual situation. The output shaft of the second power unit 203 is connected to the rollers via a coupling. The second power unit 203 drives the conveyor belt 202 to rotate through the rollers. The conveyor belt 202 is used to receive the material discharged from the feeding mechanism 100 and transport it to the discharge cylinder 300. During the process of being transported by the conveyor belt 202, the material comes into contact with the hot air inside the drying cylinder 201, and the hot air carries away the moisture in the material.

[0040] Reference Figures 1 to 4 As shown, it can be understood that a baffle plate 600 is provided on the inner wall of the drying cylinder 201. The baffle plate 600 is vertically arranged and passes through the upper end of the drying cylinder 201. The baffle plate 600 is used to prevent the material from moving backward on the conveyor belt 202. The lower end of the baffle plate 600 contacts the conveyor belt 202, and the horizontal distance between the baffle plate 600 and the feeding mechanism 100 is 10cm to 20cm.

[0041] Reference Figures 1 to 4 As shown, it can be understood that multiple dividing rods are installed at equal intervals in the drying drum 201. The dividing rods are horizontally arranged, and multiple dividing gears 700 are installed at equal intervals in the drying drum 201. The dividing gears 700 are rotatably mounted on the drying drum 201 and are installed on the drying drum 201 via the dividing rods. Multiple dividing gears 700 can be installed on one dividing rod. The dividing gears 700 abut against the upper end of the conveyor belt 202 to divide the material on the conveyor belt 202. The multiple dividing gears 700 are arranged alternately along the material transport direction.

[0042] Reference Figures 1 to 4 As shown, a material-removing rod 800 is installed inside the drying cylinder 201. One end of the material-removing rod 800 inside the drying cylinder 201 is equipped with a flat plate with a rake. The material-removing rod 800 is located below the conveyor belt 202. A material-removing port 900 is located at the bottom of the drying cylinder 201, on the side away from the spiral drying mechanism 400. The material-removing rod 800 can move back and forth along the material transport direction. Since the conveyor belt 202 inevitably spills material during transport, the accumulated spilled material at the bottom of the drying cylinder 201 will affect the normal operation of the conveyor belt 202. Therefore, workers periodically use the material-removing rod 800 to clean the spilled material at the bottom of the drying cylinder 201 and discharge it through the material-removing port 900 to maintain the normal operation of the conveyor belt 202.

[0043] Reference Figures 1 to 4 As shown, the feeding mechanism 100 includes a hopper 110 and a screw feeder 120. The screw feeder 120 is located at the bottom of the hopper 110 and is used to discharge material from the hopper 110. The hopper 110 is used to temporarily store material and is made of stainless steel for corrosion protection. The screw feeder 120 is existing technology and will not be described in detail. It is foreseeable that, in order to control the thickness of the material falling onto the conveyor belt 202, an adjustment component can be installed at the outlet of the screw feeder 120 to change the thickness of the material falling onto the conveyor belt 202.

[0044] Reference Figures 1 to 4 As shown, it can be understood that a rod-type disperser 130 is installed in the funnel 110. When the rod-type disperser 130 rotates, it can disperse and break up the material in the funnel 110, making the discharge from the screw feeder 120 smoother. The rod-type disperser 130 is equipped with multiple rotating dispersing rods and is driven by an electric motor. Because the material in the funnel 110 has a high moisture content, it is easy to clog the funnel 110. Therefore, the rod-type disperser 130 is used to stir the material in the funnel 110 to prevent the material from clogging the funnel 110.

[0045] Workflow: High-moisture-content material is placed into hopper 110. Rod-type disperser 130 in hopper 110 stirs the material, breaks up and breaks up arches, making feeding smoother. Screw feeder 120 discharges the material from hopper 110 into drying cylinder 201. Second power unit 203 drives conveyor belt 202 to move. As the material on conveyor belt 202 moves towards discharge cylinder 300, it comes into countercurrent contact with hot air flowing from hot air inlet pipe 310 to first air outlet pipe 210. The hot air carries away some of the moisture in the material. After moving into discharge cylinder 300, the material falls into conveyor cylinder 401 under gravity. External heating pipeline inputs hot air or superheated steam into installation pipe 404 through rotary joint. The hot air or superheated steam flows into heating channel through installation pipe 404 to heat propeller blade 402. When the first power unit 403 drives the propeller blade 402 to rotate, it can dry the material and move the material toward the discharge mechanism 500. The crusher crushes the material that passes through the discharge mechanism 500, and then the dried powdery material enters the next process.

[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A continuous high-moisture material volatile drying device, characterized in that, include: A feeding mechanism (100) is used to store materials, and the feeding mechanism (100) can discharge the materials from the lower end of the feeding mechanism (100); A pre-drying mechanism (200) is provided, with its inlet connected to the lower end of the feeding mechanism (100). After the material enters the pre-drying mechanism (200), it is moved parallel to the discharge cylinder (300). A hot air inlet pipe (310) is connected to the side of the discharge cylinder (300). A first air outlet pipe (210) is connected to the end of the pre-drying mechanism (200) near the feeding mechanism (100). A spiral drying mechanism (400) is connected below the material discharge cylinder (300). A second air outlet pipe (410) is provided on the upper end of the spiral drying mechanism (400) on the side away from the material discharge cylinder (300). The spiral drying mechanism (400) is used to dry the material. The discharge mechanism (500) is used to discharge the material. The discharge mechanism (500) is connected to the end of the spiral drying mechanism (400) away from the discharge cylinder (300). The spiral drying mechanism (400) can transport the material to the discharge mechanism (500).

2. The high-moisture material continuous volatile drying apparatus according to claim 1, characterized in that: The spiral drying mechanism (400) includes a conveying cylinder (401), a propeller blade (402), and a first power unit (403). One end of the conveying cylinder (401) is connected to the lower end of the discharge cylinder (300), and the other end is connected to the discharge mechanism (500). The propeller blade (402) is rotatably installed in the conveying cylinder (401). A heating channel is provided inside the propeller blade (402), and hot air is introduced into the heating channel. The first power unit (403) is used to drive the propeller blade (402) to rotate. When the propeller blade (402) rotates, it can dry the material and drive the material to move toward the discharge mechanism (500).

3. The high-moisture material continuous volatile drying apparatus according to claim 2, characterized in that: The first power unit (403) output shaft is connected to an installation pipe (404), the propeller blade (402) is arranged around the installation pipe (404), the installation pipe (404) is connected to the heating channel, and a rotary joint is provided at the end of the installation pipe (404), which is connected to an external heating pipeline.

4. The high-moisture material continuous volatile drying apparatus according to claim 1, characterized in that: The discharge mechanism (500) is equipped with a crusher, which is used to crush the material passing through the discharge mechanism (500).

5. The high-moisture material continuous volatile drying apparatus according to claim 1, characterized in that: The pre-drying mechanism (200) includes a drying cylinder (201) and a conveyor belt (202). The conveyor belt (202) is rotatably installed inside the drying cylinder (201). A second power unit (203) for driving the conveyor belt (202) to move is provided outside the drying cylinder (201). The conveyor belt (202) is used to receive the material discharged by the feeding mechanism (100) and transport it to the discharge cylinder (300).

6. The high-moisture material continuous volatile drying apparatus according to claim 5, characterized in that: The inner wall of the drying cylinder (201) is provided with a baffle plate (600), which is used to prevent the material from moving in the opposite direction on the conveyor belt (202).

7. The high-moisture material continuous volatile drying apparatus according to claim 6, characterized in that: Multiple dividing gears (700) are installed at intervals in the drying drum (201). The dividing gears (700) are rotatably installed in the drying drum (201). The dividing gears (700) abut against the conveyor belt (202) to divide the material on the conveyor belt (202). The multiple dividing gears (700) are arranged alternately along the transport direction of the material.

8. The high-moisture material continuous volatile drying apparatus according to claim 7, characterized in that: A material scraper (800) is installed inside the drying cylinder (201). The material scraper (800) is located below the conveyor belt (202). A material scraper opening (900) is opened at the bottom of the drying cylinder (201). The material scraper (800) can move back and forth along the transport direction of the material. The material scraper (800) cleans the material scattered at the bottom of the drying cylinder (201) and discharges it through the material scraper opening (900).

9. The high-moisture-content material continuous volatile drying apparatus according to claim 1, characterized in that: The feeding mechanism (100) includes a hopper (110) and a screw feeder (120), the screw feeder (120) being located at the bottom of the hopper (110) and used to discharge the material in the hopper (110).

10. The high-moisture material continuous volatile drying apparatus according to claim 9, characterized in that: The funnel (110) is equipped with a rod-type disperser (130). When the rod-type disperser (130) rotates, it can disperse and break up the material in the funnel (110), making the screw feeder (120) discharge more smoothly.

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