Novel efficient mineral drying equipment

Abstract

The utility model relates to the technical field of mineral processing, in particular to novel efficient mineral drying equipment which comprises a roller, a heat supply device, a heat supply pipeline, a feeding device and a discharging device. A plurality of lifting plates are arranged on the inner circumferential surface of the roller; the heating device is connected with the bottom of the rear end of the roller through a heating pipeline; the feeding device is connected with the rear top of the roller; the discharging device is connected to the front end of the roller; in addition, the device further comprises a gas-liquid separator, and the two ends of the gas-liquid separator are connected with the heat supply device and the discharging device respectively. The plurality of lifting plates are distributed in a spiral shape; the heat supply pipeline is spiral, the end, away from the heat supply device, of the heat supply pipeline communicates with the inner circumferential face of the roller, and the rotating direction of the heat supply pipeline is opposite to the rotating direction of the multiple lifting plates. The mine dryer can solve the problems that when an existing mine dryer conducts heat through a heat conduction pipe, the drying speed is not high enough, and the drying effect is prone to being affected.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing technology, specifically to a novel high-efficiency mineral drying equipment. Background Technology

[0002] Mineral drying equipment is a key industrial piece of equipment used to process and dry various mineral materials. The main purpose of this equipment is to remove moisture from minerals to improve their physical and chemical properties, thus facilitating subsequent processing and use. Rotary drum dryers are a type of mineral drying equipment, widely used in the mineral, chemical, and food industries. Their main characteristic is the use of rotating drums to dry minerals or materials.

[0003] The patent application with application number CN201510524627.1 discloses a mining dryer. It increases the heating area inside the drying drum by setting several heat-conducting pipes inside the drying drum to improve the drying speed. However, since the heat transfer efficiency of the heat-conducting pipes is not as good as that of direct contact with hot air, the effect of improving the drying speed is not obvious. Moreover, the setting of the heat-conducting pipes will also hinder the free flow of hot air, resulting in uneven distribution of hot air inside the drum, thus affecting the drying effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a new type of high-efficiency mineral drying equipment to solve the problem that the drying speed of existing mining dryers is not high enough when heat is conducted through heat pipes, which easily affects the drying effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel high-efficiency mineral drying equipment includes a drum, a heating device, a heating pipe, a feeding device, and a discharging device. The drum is rotated, and multiple lifting plates are provided on the inner circumference of the drum. The heating device is connected to the bottom rear end of the drum via the heating pipe. The feeding device is connected to the top rear end of the drum. The discharging device is connected to the front end of the drum. Additionally, a gas-liquid separator is included, with its two ends connected to the heating device and the discharging device, respectively. The multiple lifting plates are arranged in a spiral pattern. The heating pipe is spiral-shaped, with one end away from the heating device connected to the inner circumference of the drum. The rotation direction of the heating pipe is opposite to the rotation direction of the multiple lifting plates.

[0007] As an optional solution, a drive motor is provided at the bottom of the drum, and a gear is coaxially connected to the output shaft of the drive motor. A gear ring that meshes with the gear is coaxially connected to the outer circumferential surface of the drum.

[0008] As an optional solution, the lifting plate is inclined backward from the front end to the rear end, and the inner side of the lifting plate is inclined in the direction of rotation of the roller from the outer side to the inner side.

[0009] As an optional solution, the end of the lifting plate away from the roller is connected to an elbow.

[0010] As an optional solution, the heating device is a heat pump, and the output end of the heat pump is connected to the heating pipeline.

[0011] As an optional solution, the feeding device includes a feeding hopper and a conveyor; the output end of the feeding hopper is connected to the input end of the conveyor, and the output end of the conveyor is connected to the top of the rear end of the roller.

[0012] As an optional solution, the discharge device includes a discharge hopper, a cyclone separator, and a circulating pump; the input end of the discharge hopper is connected to the front end of the drum; the input end of the cyclone separator is connected to the discharge hopper; the input end of the circulating pump is connected to the output end of the cyclone separator, and the output end of the circulating pump is connected to the input end of the gas-liquid separator.

[0013] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0014] This utility model provides a novel high-efficiency mineral drying equipment. By incorporating a gas-liquid separator connected at both ends to a heating device and a discharge device respectively, the gas-liquid separator removes moisture from the steam discharged from the drum and then reintroduces it into the heating device. This converts low-temperature waste heat into high-temperature energy, recovering and utilizing the waste heat, thereby improving the overall efficiency of the hot air system. The spiral arrangement of the lifting plates allows the minerals to move from the rear to the front of the drum as it rotates. The spiral arrangement of the heating pipes, connecting to the inner circumference of the drum, allows hot air to enter the drum tangentially, creating a rotating flow and increasing the contact area between the hot air and the minerals, thus improving drying efficiency. Furthermore, by setting the rotation direction of the heating pipes opposite to that of the lifting plates, the hot air directly impacts the mineral surface, increasing the contact area and contact time, thereby accelerating moisture evaporation. The direct impact also ensures that the hot air is evenly distributed on the mineral surface, preventing localized overheating or undercooling and ensuring uniform heating of the minerals.

[0015] Compared with existing mining dryers that improve drying speed by conducting heat through heat pipes, this invention improves the overall efficiency of the hot air system by recovering and utilizing the waste heat of the hot air; by using rotating and flowing hot air, the contact area between the hot air and the mineral is increased, and by using the drying method of directly impacting the mineral surface with hot air, the mineral is heated evenly while further increasing the contact area and contact time between the hot air and the mineral; therefore, the drying speed and drying effect can be greatly improved. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the novel high-efficiency mineral drying equipment described in an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A perspective view of the novel roller described in the embodiment;

[0019] Figure 3 for Figure 1 Rear view of the novel roller described in the embodiment.

[0020] Reference numerals: 1. Drum; 11. Lifting plate; 12. Elbow; 2. Heating device; 21. Heating pipeline; 3. Feeding device; 31. Feeding hopper; 32. Conveyor; 4. Discharging device; 41. Discharging hopper; 42. Cyclone separator; 43. Circulating pump; 5. Gas-liquid separator; 6. Drive motor; 71. Gear; 72. Gear ring. Detailed Implementation

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to Figure 1-3 In one embodiment of a novel high-efficiency mineral drying device of the present invention, the novel high-efficiency mineral drying device includes a drum 1, a heating device 2, a heating pipe 21, a feeding device 3, and a discharging device 4.

[0025] The drum 1 is designed to rotate. Specifically, a drive motor 6 connected to a control cabinet is located at the bottom of the drum 1. The output shaft of the drive motor 6 is coaxially connected to a gear 71 via a key. A gear ring 72 that meshes with the gear 71 is coaxially fixedly sleeved on the outer circumferential surface of the drum 1. The drive motor 6 is controlled to rotate by the control cabinet, so that the gear 71 drives the drum 1 to rotate through the gear ring 72. Multiple lifting plates 11 are provided on the inner circumferential surface of the drum 1. When the drum 1 rotates, these lifting plates 11 can lift the minerals from the bottom of the drum 1 to a certain height. This lifting action allows the minerals to form a circulating motion inside the drum 1, increasing the contact time and area between the minerals and the hot air. During the lifting process, the minerals are continuously turned over and stirred, thereby promoting the rapid evaporation of moisture. Moreover, while lifting the minerals, the lifting plates 11 also disperse the minerals. This dispersion action allows the minerals to form a uniform thin layer inside the drum 1. The thin layer of minerals is more likely to come into contact with the hot air, thereby further accelerating the evaporation of moisture. Heating device 2 is connected to the bottom rear end of drum 1 via heating pipe 21. Specifically, heating device 2 can be a heat pump, with the output end of the heat pump connected to heating pipe 21. The input end of the heat pump can absorb heat from the surrounding environment and introduce hot air into the drum 1 through heating pipe 21. Feeding device 3 is connected to the top rear end of drum 1 and is used to feed the minerals to be dried into drum 1. Discharging device 4 is connected to the front end of drum 1 and is used to discharge the dried minerals and collect the carried-out mineral dust.

[0026] In addition, this new high-efficiency mineral drying equipment also includes a gas-liquid separator 5, with its two ends connected to a heating device 2 and a discharge device 4, respectively; multiple lifting plates 11 are arranged in a spiral shape; the heating pipe 21 is spiral-shaped, with one end of the heating pipe 21 away from the heating device 2 connected to the inner circumferential surface of the drum 1, and the rotation direction of the heating pipe 21 is opposite to the rotation direction of the multiple lifting plates 11. During the drying process, the moisture in the minerals inside the drum 1 is evaporated into steam, which is discharged through the discharge device 4. Since the discharged steam contains a large amount of unutilized heat, the discharged steam can be passed through the gas-liquid separator 5 to remove moisture, and then reintroduced into the heating device 2 to convert low-temperature waste heat into high-temperature energy, thus recovering and utilizing the waste heat and improving the overall efficiency of the hot air system. The lifting plates 11 on the inner circumference of the drum 1 are spirally distributed, which can move the minerals from the rear end to the front end of the drum 1 when the drum 1 rotates. The heating pipe 21 is spirally shaped and connects to the inner circumference of the drum 1, so that hot air can enter the drum 1 in a tangential direction to form a rotating flow, thereby increasing the contact area between the hot air and the minerals and improving the drying efficiency. At the same time, the rotation direction of the heating pipe 21 is opposite to the rotation direction of the lifting plates 11, so that the rotating hot air directly impacts the surface of the minerals, increasing the contact area and contact time between the hot air and the minerals, thereby accelerating the evaporation of moisture. It can also make the hot air evenly distributed on the surface of the minerals, avoiding local overheating or undercooling, and ensuring uniform heating of the minerals.

[0027] Specifically, the lifting plate 11 is inclined at 45° from the front end to the rear end, so that when the drum 1 rotates, the minerals move from the rear end to the front end of the drum 1 under the action of the lifting plate 11; the inner side of the lifting plate 11 is inclined at 60° from the outer side to the rotation direction of the drum 1, so as to lift the minerals and make the minerals continuously turn over and stir during the lifting process, thereby promoting the rapid evaporation of moisture.

[0028] More specifically, the end of the lifting plate 11 away from the drum 1 is connected to an elbow 12, which forms a 120° angle with the lifting plate 11. In this way, while lifting the mineral, the lifting plate 11 can disperse the mineral, so that the mineral forms a uniform thin layer inside the drum 1. The thin layer of mineral is more likely to come into contact with hot air, thereby further accelerating the evaporation of moisture.

[0029] Specifically, the feeding device 3 includes a feeding hopper 31 and a conveyor 32; the input end of the feeding hopper 31 faces upward and is used to receive the minerals to be dried; the output end of the feeding hopper 31 is connected to the input end of the conveyor 32; the output end of the conveyor 32 is connected to the top of the rear end of the drum 1; the conveyor 32 can be a screw conveyor 32, through which the minerals falling from the feeding hopper 31 can be transported into the inside of the drum 1.

[0030] Specifically, the discharge device 4 includes a discharge hopper 41, a cyclone separator 42, and a circulating pump 43. The input end of the discharge hopper 41 is connected to the front end of the drum 1, and the output end of the discharge hopper 41 faces downwards, allowing the dried minerals to be discharged through the discharge hopper 41. The input end of the cyclone separator 42 is connected to the discharge hopper 41 to receive the exhaust gas output from the discharge hopper 41. The input end of the circulating pump 43 is connected to the output end of the cyclone separator 42, and the output end of the circulating pump 43 is connected to the input end of the gas-liquid separator 5. Since air is used as a heat source, the airflow will carry away some mineral dust. The circulating pump 43 can deliver air while simultaneously collecting and recovering the mineral dust through the cyclone separator 42.

[0031] The method of use or working principle of this utility model is as follows:

[0032] First, the minerals to be dried are fed into the feed hopper 31. The minerals falling from the feed hopper 31 are conveyed into the drum 1 by the conveyor 32. Then, the drive motor 6 is controlled by the control cabinet to rotate, so that the gear 71 drives the drum 1 to rotate through the gear ring 72. When the drum 1 rotates, the lifting plates 11 lift and disperse the minerals, causing the minerals to move from the rear end to the front end of the drum 1. Next, the heating device 2 is started to absorb heat from the surrounding environment and hot air is rotated into the drum 1 through the heating pipe 21. The hot air enters the drum 1 in a tangential direction, forming a rotating flow. The rotating hot air is opposite to the rotation direction of the minerals. This allows hot air to directly impact the mineral surface, increasing the contact area and time between the hot air and the mineral, thereby accelerating the evaporation of moisture. Moreover, the direct impact method also ensures that the hot air is evenly distributed on the mineral surface, avoiding local overheating or undercooling and ensuring uniform heating of the mineral. The dried mineral is discharged through the discharge hopper 41, while the waste gas with residual heat is pumped by the circulating pump 43, passes through the cyclone separator 42 for dust removal and the gas-liquid separator 5 for water removal, and is then reintroduced into the heating device 2. In this way, the low-temperature waste heat can be converted into high-temperature energy, and the waste heat can be recovered and utilized, thereby improving the overall efficiency of the hot air system.

[0033] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A novel high-efficiency mineral drying equipment, comprising a drum (1), a heating device (2), a heating pipe (21), a feeding device (3), and a discharging device (4); the drum (1) is rotatably arranged, and a plurality of lifting plates (11) are provided on the inner circumferential surface of the drum (1); the heating device (2) is connected to the bottom of the rear end of the drum (1) through the heating pipe (21); the feeding device (3) is connected to the top of the rear end of the drum (1); the discharging device (4) is connected to the front end of the drum (1); characterized in that, It also includes a gas-liquid separator (5), which is connected to the heating device (2) and the discharge device (4) at both ends respectively; the multiple lifting plates (11) are arranged in a spiral shape; the heating pipe (21) is spiral-shaped, and the end of the heating pipe (21) away from the heating device (2) is connected to the inner circumferential surface of the drum (1), and the rotation direction of the heating pipe (21) is opposite to the rotation direction of the multiple lifting plates (11).

2. The novel high-efficiency mineral drying equipment according to claim 1, characterized in that, The bottom of the roller (1) is provided with a drive motor (6), and the output shaft of the drive motor (6) is coaxially connected to a gear (71). The outer circumferential surface of the roller (1) is coaxially connected to a gear ring (72) that meshes with the gear (71).

3. The novel high-efficiency mineral drying equipment according to claim 1, characterized in that, The lifting plate (11) is inclined to the rear from the front end to the rear end, and the inner side of the lifting plate (11) is inclined to the rotation direction of the roller (1) from the outer side.

4. The novel high-efficiency mineral drying equipment according to claim 1, characterized in that, The end of the lifting plate (11) away from the roller (1) is connected to an elbow (12).

5. The novel high-efficiency mineral drying equipment according to claim 1, characterized in that, The heating device (2) is a heat pump, and the output end of the heat pump is connected to the heating pipe (21).

6. The novel high-efficiency mineral drying equipment according to claim 1, characterized in that, The feeding device (3) includes a feeding hopper (31) and a conveyor (32); the output end of the feeding hopper (31) is connected to the input end of the conveyor (32), and the output end of the conveyor (32) is connected to the top of the rear end of the roller (1).

7. The novel high-efficiency mineral drying equipment according to claim 1, characterized in that, The discharge device (4) includes a discharge hopper (41), a cyclone separator (42), and a circulating pump (43); the input end of the discharge hopper (41) is connected to the front end of the drum (1); the input end of the cyclone separator (42) is connected to the discharge hopper (41); the input end of the circulating pump (43) is connected to the output end of the cyclone separator (42), and the output end of the circulating pump (43) is connected to the input end of the gas-liquid separator (5).

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