Heating system of electric separator

Abstract

The utility model relates to the technical field of industrial heating equipment, in particular to an electric separator heating system which comprises a conveying belt, a vibration device and a plurality of microwave heating devices. The conveying belt is used for conveying mixed minerals; the vibration device is arranged below the conveying belt to drive the belt surface of the conveying belt to vibrate up and down; the multiple microwave heating devices are arranged above the conveying belt and arranged at intervals in the conveying direction of the conveying belt so as to heat the mixed minerals step by step. The problems that an existing electric separator is low in mineral heating energy efficiency, low in speed and poor in uniformity can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial heating equipment technical field, concretely relates to a kind of electric separator heating system. BACKGROUND

[0002] Electric separator is needed when sorting zirconite. Electric separator is a kind of equipment using electric field and magnetic field principle to sort material, and is widely used in mineral processing, waste material recycling, food processing and other fields. Mixed minerals containing zirconite have different conductivity, and different charges are carried by the effect of electrostatic induction or capture of charged ions when passing through electric field, and different characteristics are shown in electric field. With the action of gravity, different movement trajectories are generated. Then, different conductivity minerals are separated by using material receiving device.

[0003] Because the conductivity of mixed minerals is poor at room temperature, it affects the efficiency of electric separation. Therefore, the raw ore needs to be heated when electric separator sorts zirconite. The existing electric separator generally sets heating device in heating pot, and uses traditional methods such as gas heating and electric heating to heat raw ore. Heat is mainly transferred to minerals by radiation, conduction and convection. Because the energy transfer path is long, the energy loss is large, the heating speed is slow, and the heat is concentrated on the surface of minerals, which is easy to overheat the surface of minerals and not heat the inside, and the uniformity is poor. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims to provide an electric separator heating system to solve the problems of low energy efficiency, slow speed and poor uniformity of the existing electric separator heating minerals.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] An electric separator heating system includes a conveyor belt, a vibration device and a plurality of microwave heating devices. The conveyor belt is used to convey mixed minerals. The vibration device is arranged below the conveyor belt to drive the upper and lower vibration of the belt surface of the conveyor belt. A plurality of microwave heating devices are arranged above the conveyor belt and are arranged along the conveying direction of the conveyor belt to gradually heat the mixed minerals.

[0007] As an optional scheme, the upper and lower sides of the vibration device are respectively connected with vibration plate and support. The upper surface of the vibration plate is close to the belt surface of the conveyor belt. The upper surface of the support is respectively provided with elastic body at both ends. The lower surface of the vibration plate is connected with the support through the elastic body at both ends.

[0008] As an optional scheme, the elastic body is rubber pad, and the vibration device is electromagnetic vibrator.

[0009] As an optional scheme, the cover on the conveying belt is provided with a cover body extending along the length direction of the conveying belt, and the microwave heating device is installed at the top of the cover body.

[0010] As an optional scheme, a heat pump is arranged at the front end of the cover body, and an air blower is arranged at the rear end of the cover body.

[0011] As an optional scheme, the front end of the conveying belt is provided with a discharging plate for connecting an electric separator.

[0012] As an optional scheme, an infrared temperature sensor is arranged above the discharging plate.

[0013] Due to the above technical scheme, the utility model has the following beneficial effects:

[0014] The microwave heating device generates microwaves which can penetrate the surface of the ore, so that the water molecules and other active components in the ore are vibrated to generate heat, thereby realizing rapid and uniform heating.

[0015] Compared with the conventional heating method of the existing electric separator, the utility model adopts the microwave heating method, so that the mixed ore can be heated more rapidly, uniformly and efficiently. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description.

[0017] Figure 1 The installation structure diagram of the electric separator heating system is described in the embodiment of the utility model.

[0018] 1, conveying belt; 11, cover body; 12, blanking plate; 2, vibrating device; 21, vibrating plate; 22, support; 23, elastic body; 3, microwave heating device; 4, heat pump; 5, air blower; 6, infrared temperature measurement sensor; 7, mixed mineral; 8, electric separator. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0022] Please refer to Figure 1In an embodiment of the electric separator heating system, the electric separator heating system comprises a conveying belt 1, a vibrating device 2 and a plurality of microwave heating devices 3; the conveying belt 1 is used for conveying mixed minerals 7, a discharging plate 12 is installed at the front end of the conveying belt 1, the discharging plate 12 is connected to the electric separator 8 in a downward inclined manner, a cover body 11 extending along the length direction of the conveying belt 1 is arranged on the conveying belt 1, and the belt surface of the conveying belt 1 is made of high-temperature-resistant material; the vibrating device 2 is arranged below the conveying belt 1 corresponding to the cover body 11 to drive the belt surface of the conveying belt 1 to vibrate up and down; the plurality of microwave heating devices 3 are arranged above the conveying belt 1, and specifically can be installed at the top of the cover body 11, and are used for emitting microwaves downward to heat the mixed minerals 7 containing zirconite, and the microwave heating devices 3 are arranged in a spaced manner along the conveying direction of the conveying belt 1 to heat the mixed minerals 7 gradually.

[0023] It should be noted that the microwave heating device 3 described above is a device for heating and processing mineral materials by using microwaves, which uses a high-power microwave generator to generate the required microwave energy, and transmits the microwave energy from the generator to the conveying belt 1 through a waveguide system to heat the mixed minerals 7, and is equipped with a highly automated control system, which can monitor and adjust the microwave power, heating time and temperature and other parameters in real time, and the specific working principle is not described here.

[0024] In use, the mixed minerals 7 are conveyed by the conveying belt 1, and the microwave heating devices 3 emit microwaves downward to heat the mixed minerals 7 containing zirconite during the conveying process, and the zirconite has strong microwave absorption capacity, the microwave heating can quickly penetrate the surface of the ore, the water molecules and other active components in the mineral are vibrated to generate heat, the rapid and uniform heating is realized, and the energy loss is small and the energy efficiency is high due to the direct action on the interior of the mineral.

[0025] During the heating process, the vibrating device 2 drives the belt surface of the conveying belt 1 to vibrate up and down in cooperation with the conveying of the conveying belt 1, so that the mixed minerals 7 are constantly turned over and moved, so that different parts of the mixed minerals 7 can uniformly absorb microwave energy, so that the temperature distribution of the whole ore is more uniform, and the thermal stress caused by uneven temperature is reduced. At the same time, the plurality of microwave heating devices 3 arranged in a spaced manner form a multi-stage microwave heating system, which can heat the mixed minerals 7 gradually, so that the mixed minerals 7 are gradually heated at different heating stages, and the thermal stress caused by rapid heating is avoided.

[0026] After microwave heating, the mixed minerals 7 enter the electric separator 8 to obtain many positive charges under the action of high-voltage corona electric field. Because the conductor material has good conductivity, the charges adsorbed on the surface can flow freely on the surface. Once in contact with the grounded drum, the charges on the surface are transmitted through the drum, and the drum has no adsorption effect on the charges. Under the action of centrifugal force and gravity, the charges deviate to the side of the electric quantity electrode along the rotation direction of the drum and fall down. The non-conductor material has poor or no conductivity, so the charges adsorbed on the surface cannot or cannot be quickly transmitted. Because opposite poles attract each other, the material is attracted to the grounded drum, and the attraction force (Coulomb force) is greater than the combined force of the centrifugal force and the gravity, so the material is tightly adsorbed on the drum surface and rotates to the rear until it is brushed off by the brush. The material with conductivity between the two or the charges carried by the material falls down in the middle.

[0027] Specifically, the upper and lower sides of the vibration device 2 are respectively connected with a vibration plate 21 and a support 22; the vibration plate 21 corresponds to the position of the cover body 11 in up and down direction, and the upper surface of the vibration plate 21 is close to the belt surface of the conveyor belt 1; the upper surface of the support 22 is respectively fixedly connected with an elastic body 23 at both ends; the lower surface of the vibration plate 21 is respectively connected with the support 22 through the elastic body 23 at both ends, and the vibration plate 21 can drive the belt surface of the conveyor belt 1 to vibrate up and down when the vibration device 2 vibrates. The vibration plate 21 can increase the contact area between the vibration device 2 and the belt surface of the conveyor belt 1, so that the force output by the vibration device 2 is dispersed to a larger area, thereby reducing the pressure on the unit area and preventing the belt surface of the conveyor belt 1 from being damaged or deformed due to local high pressure. Moreover, the larger contact area provides better support, so that the vibration system is more stable during operation and the displacement or inclination of the belt surface of the conveyor belt 1 caused by vibration is reduced. The elastic body 23 can buffer the vibration of the vibration plate 21.

[0028] More specifically, the elastic body 23 can be a rubber pad; the vibration device 2 can be an electromagnetic vibrator. The electromagnetic vibrator is a device that generates vibration by electromagnetic force and is widely used in many fields such as industry, agriculture, construction and daily life. It generates a magnetic field through an electromagnetic coil, and when current passes through the coil, the magnetic field changes, generating electromagnetic force. This electromagnetic force acts on the movable part of the vibrator, causing it to vibrate.

[0029] Further, the cover body 11 is externally connected at the front end with a heat pump 4 and at the rear end with an induced draft fan 5. The heat pump 4 inputs hot air into the cover body 11 to heat the mixed minerals 7 on the conveyor belt 1, and the induced draft fan 5 then draws out the hot air after heat transfer, forming a hot air circulation to promote uniform distribution of the temperature around the mixed minerals 7. Through convection, heat can be transferred more quickly on the surface of the ore and the surrounding space, thereby reducing the temperature gradient and thermal stress. Moreover, the combination of microwave heating and traditional hot air heating method can achieve more uniform heating effect.

[0030] Further, the infrared temperature sensor 6 is installed vertically above the discharging plate 12, the infrared temperature sensor 6 is a kind of equipment for measuring the surface temperature of target object using infrared radiation principle, the infrared temperature sensor 6 is connected with the control system of microwave heating device 3 by analog signal or digital signal, the control system of microwave heating device 3 reads the temperature data of mixed mineral 7 entering the electric separator 8 from the infrared temperature sensor 6 regularly, compares the temperature measured in real time with set temperature to control the power of microwave heating device 3, prevent the temperature of mixed mineral 7 entering the electric separator 8 from being too high, because too high temperature can cause the conductivity of mineral to be too strong or too weak, not suitable for electric separation, and under high temperature, the surface and internal properties of mineral also change, which can cause electric separation efficiency to reduce, and separation is not thorough.

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

[0032] When the conveying belt 1 conveys mixed mineral 7, microwave heating device 3 emits microwave downward, which can heat mixed mineral 7 quickly, uniformly and efficiently; during heating process, multiple microwave heating devices 3 arranged at intervals can heat mixed mineral 7 gradually, and vibration device 2 cooperates with conveying belt 1 to make mixed mineral 7 overturn and move constantly, so as to effectively reduce the thermal stress of microwave heating; at the same time, through the setting of heat pump 4 and induced draft fan 5, hot air circulation can be formed in cover body 11, further reducing the thermal stress of microwave heating; after microwave heating, mixed mineral 7 enters electric separator 8 through discharging plate 12.

[0033] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of application for patent, it should be pointed out that, for ordinary skilled person in the art, without departing from the concept of the utility model, a number of variations and improvements can be made, which all belong to the protection scope of the utility model.

Claims

1. An electrical selection machine warming system, characterized by, The application relates to a microwave heating device for mixed minerals, which comprises a conveying belt (1), a vibrating device (2) and a plurality of microwave heating devices (3); the conveying belt (1) is used for conveying mixed minerals (7); the vibrating device (2) is arranged below the conveying belt (1) to drive the conveying belt (1) to vibrate up and down; and the plurality of microwave heating devices (3) are arranged above the conveying belt (1) and are arranged at intervals along the conveying direction of the conveying belt (1) to gradually heat the mixed minerals (7).

2. The electric selected machine warming system according to claim 1, wherein, The vibrating device (2) is connected with a vibrating plate (21) and a support (22) on the upper side and the lower side respectively; the upper surface of the vibrating plate (21) is close to the belt surface of the conveying belt (1); the upper surface of the support (22) is provided with elastic bodies (23) at both ends respectively; and the lower surface of the vibrating plate (21) is connected with the support (22) through the elastic bodies (23) at both ends respectively.

3. The electric selected machine warming system according to claim 2, wherein, The elastic bodies (23) are rubber pads; and the vibrating device (2) is an electromagnetic vibrator.

4. The electric selected machine warming system according to claim 1, wherein, A cover body (11) extending along the length direction of the conveying belt (1) is arranged on the conveying belt (1); and the microwave heating device (3) is installed on the top of the cover body (11).

5. The electric selected machine warming system according to claim 4, wherein, A heat pump (4) is arranged at the front end of the cover body (11); and an air draught fan (5) is arranged at the rear end of the cover body (11).

6. The electric selected machine warming system according to claim 1, wherein, A discharging plate (12) used for connecting an electric separator (8) is arranged at the front end of the conveying belt (1).

7. The electric selected machine warming system according to claim 6, wherein, An infrared temperature measuring sensor (6) is arranged above the discharging plate (12).

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