Magnetic separator and cooling device thereof

Abstract

The utility model belongs to the technical field of magnetic separation equipment, and particularly discloses a magnetic separator and a cooling device thereof, the cooling device of the magnetic separator comprises a shell, a magnetic separation channel is arranged in the middle of the shell, an annular magnetic cavity is arranged around the magnetic separation channel in the shell, and a magnet exciting coil is arranged in the annular magnetic cavity. A cooling water cavity adjacent to the annular magnetic cavity is formed in the shell, the cooling water cavity is used for circulating cooling water, the annular magnetic cavity is filled with a heat-conducting medium, the heat-conducting medium is used for conducting heat generated by the magnet exciting coil to the cooling water cavity, and a heat insulation layer is arranged outside the shell. According to the cooling device of the magnetic separator, a traditional oil cooling mode is replaced with a water cooling mode, the heat insulation layer is additionally arranged outside the shell, the economical and efficient cooling effect is achieved, the operation cost of the magnetic separator is reduced, and the magnetic separator can be used in places where constant temperature needs to be kept.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic separation equipment, and specifically relates to a magnetic separator and a cooling device thereof. Background Art

[0002] Magnetic separator, as a device that uses magnetic field force to separate materials, is widely used in mining, metallurgy, chemical industry, ceramics, food and other industries. Its core working principle is to generate magnetic field force through the excitation coil, thereby separating the magnetic and non-magnetic substances in the mixture. However, the excitation coil will generate a lot of heat during the power-on process. In order to ensure the normal operation of the magnetic separator, the excitation coil must be effectively cooled.

[0003] In the prior art, for example, in the patent document with the authorization announcement number CN213744084U, a circulating oil-cooled electromagnetic iron remover, i.e., a magnetic separator, is disclosed. The magnetic separator is designed with an annular electromagnetic cavity, in which an excitation coil is installed, and insulating cooling oil is injected into the cavity. During use, the circulation of the insulating cooling oil in the annular electromagnetic cavity is realized by connecting the oil inlet and the oil outlet on the annular electromagnetic cavity with the insulating cooling oil circulation pipeline, thereby realizing the cooling of the excitation coil, thereby ensuring the stable operation of the magnetic separator. However, although the method of using insulating cooling oil as a cooling medium is effective, it also brings the problem of high cost. This is because: first, the insulating cooling oil not only has a high procurement cost, but also needs to be regularly replaced and maintained during use, which undoubtedly increases the operating cost of the equipment. Secondly, if the oil cooling method is adopted, the insulating cooling oil needs to be cooled secondary during operation to facilitate the recycling of the insulating oil. The process is complicated and a heat exchange device needs to be added, which further increases the operating cost. In addition to cost issues, in some applications, strict requirements are placed on the surface temperature of the equipment. Production equipment is not allowed to form a heat source to release heat to the outside and affect the ambient temperature. The use of oil cooling cannot meet this requirement.

[0004] In view of the above problems, it is necessary to make further improvements to the cooling device of the magnetic separator. On the one hand, it is necessary to find a more economical and efficient cooling method to reduce the operating cost of the magnetic separator; on the other hand, the new cooling method should ensure effective cooling of the excitation coil to ensure the stable operation of the magnetic separator. Utility Model Content

[0005] The main purpose of the utility model is to provide an improved magnetic separator and its cooling device in view of the problems existing in the existing magnetic separator cooling device. By optimizing the design of the cooling device, it aims to achieve a more economical and efficient cooling effect, reduce the operating cost of the magnetic separator, and ensure the stable operation of the excitation coil.

[0006] In order to achieve the above-mentioned purpose, the utility model discloses a magnetic separator cooling device, which includes a shell, a magnetic separation channel is provided in the middle of the shell, an annular magnetic cavity is provided around the magnetic separation channel in the shell, an excitation coil is installed in the annular magnetic cavity, a cooling water cavity adjacent to the annular magnetic cavity is provided in the shell, the cooling water cavity is used to circulate cooling water, the annular magnetic cavity is filled with a heat-conducting medium, and the heat-conducting medium is used to conduct the heat generated by the excitation coil to the cooling water cavity. After the above-mentioned technical improvements, cooling water is used to realize the cooling of the magnetic separator, which is lower in cost than the traditional oil cooling method. At the same time, in order to ensure safety, the cooling water cavity and the annular magnetic cavity are cleverly designed to be separated, and a heat-conducting medium is used as a medium for heat conduction. This improvement not only achieves a more economical and efficient cooling effect, but also significantly reduces the operating cost of the magnetic separator, ensures the stable operation of the excitation coil, and thus improves the reliability and service life of the entire equipment.

[0007] Furthermore, a heat insulation layer is provided outside the shell. By adding a heat insulation layer, the heat in the cooling water chamber can be prevented from dissipating, and while maintaining efficient cooling of the excitation coil, the magnetic separator is prevented from releasing heat outward. At the same time, when the cooling water temperature is low, condensation on the surface of the equipment can be prevented. This improvement enables the magnetic separator to adapt to environments that need to maintain a constant temperature, such as scientific research sites, thereby ensuring the stability and reliability of the equipment in these critical occasions.

[0008] Furthermore, the shell has a cylindrical shape, the shell is arranged vertically, and the magnetic separation channel passes through the top and bottom surfaces of the shell. The cylindrical shape of the shell makes the magnetic separator more compact as a whole, thereby saving space.

[0009] Furthermore, a cooling water inlet pipe is provided at the bottom of the shell, and a cooling water outlet pipe is provided at the top of the shell. The cooling water inlet pipe is connected to the cooling water cavity directly or through a plurality of branched inlet pipes, and the cooling water outlet pipe is connected to the cooling water cavity directly or through a plurality of branched outlet pipes. With the above structure, cooling water can enter from the bottom and flow out from the top, thereby ensuring that the cooling water in the cooling water cavity is always full, thereby improving the cooling effect.

[0010] Furthermore, the cooling water cavity at least includes an outer ring portion located at the outer periphery of the annular magnetic cavity. After adopting the above structure, the cooling water can take away heat from the outer peripheral surface of the excitation coil, and the cooling efficiency is high.

[0011] Furthermore, the cooling water chamber also includes an inner ring portion located on the inner periphery of the annular magnetic chamber, or a top surface portion located on the top of the annular magnetic chamber, or a bottom surface portion located on the bottom of the annular magnetic chamber, or a combination of any two or three of the above-mentioned portions. With the above structure, the cooling water can not only take away heat from the outer peripheral surface of the excitation coil, but also take away heat from the top, bottom or inner peripheral surface of the excitation coil, further improving the cooling effect.

[0012] Furthermore, a magnetic yoke is provided in the shell, and the magnetic yoke includes an upper magnetic yoke, a lower magnetic yoke, and an outer ring magnetic yoke, and the upper magnetic yoke, the lower magnetic yoke, the outer ring magnetic yoke, and the part of the shell near the magnetic selection channel form the annular magnetic cavity. Through the carefully designed magnetic yoke structure, including the upper magnetic yoke, the lower magnetic yoke, the outer ring magnetic yoke, and the part of the shell near the magnetic selection channel together forming the annular magnetic cavity, the magnetic field strength and uniformity are significantly improved.

[0013] Furthermore, the cooling water chamber has a stainless steel chamber wall, which can prevent rust and ensure the cooling effect of the magnetic separator cooling device and the safety of the magnetic separator.

[0014] Furthermore, a magnetic conductive medium net 14 is provided in the magnetic separation channel. The magnetic conductive medium net 14 can fully contact with the material passing through the magnetic separation channel 3, so that the magnetic field acts more deeply on the material, and the magnetic material is better selected to improve the magnetic separation effect.

[0015] The utility model also discloses a magnetic separator, which uses the magnetic separator cooling device. After the magnetic separator adopts the cooling device, an economical and efficient cooling effect is achieved, the operation cost of the magnetic separator is reduced, and the excitation coil is ensured to work stably.

[0016] In summary, the beneficial effects of the utility model are as follows: the utility model improves the cooling device of the magnetic separator, a heat-conducting medium is installed in the annular magnetic cavity, a cooling water cavity is arranged adjacent to the annular magnetic cavity, and a heat-insulating layer is arranged outside the shell, so that the traditional oil cooling method is replaced by water cooling, and the heat dissipation of the magnetic separator to the outside can be reduced to the greatest extent. This innovative design not only replaces the traditional oil cooling method and reduces the operating cost, but also makes the magnetic separator suitable for places that need to maintain a constant temperature. In general, the utility model achieves an economical and efficient cooling effect, and provides a strong guarantee for the stable operation of the magnetic separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of one embodiment of the utility model;

[0018] Figure 2 yes Figure 1 a front view of the illustrated embodiment;

[0019] Figure 3 to Figure 1 a cross-sectional view of the illustrated embodiment;

[0020] Figure 4 yes Figure 2 Schematic diagram of the structure from a top-down perspective;

[0021] Figure 5 yes Figure 2 Schematic diagram of the structure looking upward.

[0022] In the figure: 1, frame, 2, shell, 3, magnetic separation channel, 4, annular magnetic cavity, 5, excitation coil, 6, cooling water cavity, 7, heat conductive medium, 8, thermal insulation layer, 9, cooling water inlet pipe, 10, cooling water outlet pipe, 11, branch inlet pipe, 12, branch outlet pipe, 13, magnetic yoke, 14, magnetic conductive medium net. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0027] The traditional cooling device of the magnetic separator adopts oil cooling. The insulating cooling oil not only has high procurement cost, but also needs to be regularly replaced and maintained during use, resulting in high operating cost. The utility model optimizes the design of the cooling device to achieve a more economical and efficient cooling effect, reduce the operating cost of the magnetic separator, and ensure the stable operation of the excitation coil.

[0028] Figure 1 The utility model discloses a three-dimensional structure of a magnetic separator, which comprises a frame 1 on which a shell 2 is mounted. Figure 3A magnetic separation channel 3 is provided in the middle of the shell 2, and an annular magnetic cavity 4 is provided around the magnetic separation channel 3 in the shell 2, and an excitation coil 5 is installed in the annular magnetic cavity 4. The excitation coil 5 generates magnetic force after being energized, and magnetically separates the mixed material passing through the magnetic separation channel 3. A magnetic conductive medium net 14 is provided in the magnetic separation channel 3, and the magnetic conductive medium net 14 can fully contact with the material passing through the magnetic separation channel 3, so that the magnetic field acts more deeply on the material, and the magnetic material is better selected to improve the magnetic separation effect.

[0029] The utility model mainly improves the cooling device of the magnetic separator. Figure 3 The basic structure of the magnetic separator cooling device includes a shell 2, a magnetic separation channel 3 is provided in the middle of the shell 2, an annular magnetic cavity 4 is provided around the magnetic separation channel 3 in the shell 2, and an excitation coil 5 is installed in the annular magnetic cavity 4. In order to improve the magnetic field strength and uniformity, a magnetic yoke is provided in the shell 2, and the magnetic yoke 13 includes an upper magnetic yoke, a lower magnetic yoke, and an outer ring magnetic yoke. The annular magnetic cavity 4 is surrounded by the upper magnetic yoke, the lower magnetic yoke, the outer ring magnetic yoke and the part of the shell 2 close to the magnetic separation channel 3.

[0030] Reference Figure 3 The main improvement of the magnetic separator cooling device is that a cooling water chamber 6 is provided in the shell 2 for circulating cooling water. Preferably, the cooling water chamber 6 has a stainless steel chamber wall to prevent rust and ensure the safe use of the magnetic separator cooling device. In order to construct the stainless steel chamber wall, a variety of implementation schemes can be adopted. First, stainless steel can be directly used to manufacture the shell 2, and a layer of stainless steel shell can be added to the outside of the yoke 13. In addition, a stainless steel inner shell can also be designed separately inside the shell 2, specifically for forming the cooling water chamber 6.

[0031] Reference Figure 3 The cooling water chamber 6 is arranged adjacent to the annular magnetic chamber 4. The annular magnetic chamber 4 is filled with a heat-conducting medium 7. The heat-conducting medium 7 is used to transfer the heat generated by the excitation coil 5 to the cooling water chamber 6. The heat-conducting medium 7 can be in the form of liquid, solid, semi-solid, etc. A heat-insulating layer 8 is arranged outside the shell 2 to reduce the heat dissipation of the magnetic separator and prevent condensation, so that the magnetic separator can be adapted to application scenarios such as scientific research sites that need to maintain a constant temperature.

[0032] After the improved magnetic separator cooling device is provided, the magnetic separator can connect the cooling water chamber 6 with the cooling water inlet and outlet pipelines when in use, and the heat conducting medium 7 conducts the heat generated by the excitation coil 5 to the cooling water in the cooling water chamber 6, and the heat is taken away by the circulation of the cooling water.

[0033] Reference Figure 1 , Figure 3 Preferably, the shell 2 is cylindrical in shape, the shell 2 is arranged vertically, and the magnetic separation channel 3 passes through the top and bottom surfaces of the shell 2. The cylindrical shape of the shell 2 makes the magnetic separator more compact as a whole, thereby saving space.

[0034] Reference Figure 1 , Figure 4 , Figure 5 A cooling water inlet pipe 9 is provided at the bottom of the housing 2, and a cooling water outlet pipe 10 is provided at the top of the housing 2. The cooling water inlet pipe 9 is connected to the cooling water chamber 6 directly or through a plurality of branched inlet pipes 11, and the cooling water outlet pipe 10 is connected to the cooling water chamber 6 directly or through a plurality of branched outlet pipes 12. With the above structure, cooling water can enter from the bottom and flow out from the top, thereby ensuring that the cooling water in the cooling water chamber is always full, thereby improving the cooling effect.

[0035] The cooling water chamber 6 in the present invention can have many different embodiments. In some embodiments of the cooling water chamber 6, the cooling water chamber 6 at least includes an outer ring portion located on the outer periphery of the annular magnetic chamber 4. After adopting the above structure, the cooling water can take away heat from the outer peripheral surface of the excitation coil 5, and the cooling efficiency is high.

[0036] In some other embodiments of the cooling water chamber 6, the cooling water chamber 6, in addition to the outer ring part located on the outer periphery of the annular magnetic cavity 4, may also include an inner ring part located on the inner periphery of the annular magnetic cavity 4, or a top surface part located on the top of the annular magnetic cavity 4, or a bottom surface part located on the bottom of the annular magnetic cavity 4, or a combination of any two or three parts mentioned above, thereby the cooling water can not only take away heat from the outer peripheral surface of the excitation coil 5, but also take away heat from the top, bottom or inner peripheral surface of the excitation coil 5, thereby further improving the cooling effect.

[0037] The use method of the magnetic separator cooling device in the utility model is as follows: the cooling water chamber 6 can be connected to the cooling water inlet and outlet pipelines, and a water pump is arranged on the cooling water inlet and outlet pipelines. When the magnetic separator is working, the heat-conducting medium conducts the heat generated by the excitation coil to the cooling water in the cooling water chamber, and the heat is then taken away by the circulation of the cooling water. The heat insulation layer 8 is used to reduce the heat dissipation of the magnetic separator during use and prevent condensation, so that the magnetic separator is suitable for use in scenes where a constant temperature needs to be maintained, such as scientific research sites.

[0038] After the improvement of the utility model, water cooling replaces the traditional cooling method of oil cooling, which not only reduces the operating cost of the magnetic separator, but also reduces the heat dissipation during the use of the magnetic separator, making it suitable for use in application scenarios where a constant temperature needs to be maintained.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A magnetic separator cooling device, comprising a housing (2), a magnetic separation channel (3) being provided in the middle of the housing (2), an annular magnetic cavity (4) being provided in the housing (2) around the magnetic separation channel (3), an excitation coil (5) being installed in the annular magnetic cavity (4), characterized in that: The shell (2) is provided with a cooling water chamber (6) adjacent to the annular magnetic chamber (4), the cooling water chamber (6) being used to circulate cooling water, and the annular magnetic chamber (4) is filled with a heat conducting medium (7), the heat conducting medium (7) being used to conduct heat generated by the excitation coil (5) to the cooling water chamber (6).

2. The magnetic separator cooling device according to claim 1, characterized in that: A heat insulation layer (8) is provided outside the shell (2).

3. The magnetic separator cooling device according to claim 1, characterized in that: The shell (2) has a cylindrical shape, is arranged vertically, and the magnetic selection channel (3) passes through the top surface and the bottom surface of the shell (2).

4. The magnetic separator cooling device according to claim 1, characterized in that: A cooling water inlet pipe (9) is provided at the bottom of the shell (2), and a cooling water outlet pipe (10) is provided at the top of the shell (2); the cooling water inlet pipe (9) is connected to the cooling water chamber (6) directly or through a plurality of branched inlet pipes (11); and the cooling water outlet pipe (10) is connected to the cooling water chamber (6) directly or through a plurality of branched outlet pipes (12).

5. The magnetic separator cooling device according to claim 1, characterized in that: The cooling water chamber (6) comprises at least an outer ring portion located on the outer periphery of the annular magnetic chamber (4).

6. The magnetic separator cooling device according to claim 5, characterized in that: The cooling water chamber (6) further comprises an inner ring portion located on the inner periphery of the annular magnetic chamber (4), or a top surface portion located on the top of the annular magnetic chamber (4), or a bottom surface portion located on the bottom of the annular magnetic chamber (4), or a combination of any two or three of the above-mentioned portions.

7. The magnetic separator cooling device according to claim 1, characterized in that: A magnetic yoke is provided in the shell (2), and the magnetic yoke (13) comprises an upper magnetic yoke, a lower magnetic yoke, and an outer ring magnetic yoke. The upper magnetic yoke, the lower magnetic yoke, the outer ring magnetic yoke, and a portion of the shell (2) close to the magnetic selection channel (3) form the annular magnetic cavity (4).

8. The magnetic separator cooling device according to claim 1, characterized in that: The cooling water chamber (6) has a stainless steel chamber wall.

9. The magnetic separator cooling device according to claim 1, characterized in that: A magnetic conductive medium net (14) is provided in the magnetic separation channel (3).

10. A magnetic separator, characterized in that: The magnetic separator uses the magnetic separator cooling device as described in any one of claims 1 to 9.

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