CN215744084U

CN215744084U - Circulating oil cooling electromagnetic iron remover

Info

Publication number: CN215744084U
Application number: CN202122320580.0U
Authority: CN
Inventors: 张佃波; 王志田; 李太敏
Original assignee: Weifang Sun Chasing Magnetoelectric Technology Co ltd
Current assignee: Weifang Sun Chasing Magnetoelectric Technology Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-02-08
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a circulating oil-cooled electromagnetic iron remover, which belongs to the technical field of magnetic separation equipment and comprises a shell, wherein an annular electromagnetic cavity is formed in the shell, and an excitation coil is arranged in the annular electromagnetic cavity; the annular electromagnetic cavity is connected with the insulated cooling oil circulation pipeline, the cooling oil channel of the heat exchanger is connected with the insulated cooling oil circulation pipeline, and the circulating pump is arranged on the insulated cooling oil circulation pipeline. The utility model can realize the high-efficient removal of ferromagnetic substances in fluid materials or bulk materials, and the utility model adopts two sets of circulating systems of insulating cooling oil and low boiling point heat-conducting medium to cool the magnet exciting coil generating a magnetic field, and the cooling mode is safe and high-efficient, so that the utility model can continuously work for a long time in a high-temperature and hot environment.

Description

Circulating oil cooling electromagnetic iron remover

Technical Field

The utility model relates to a circulating oil cooling electromagnetic iron remover, and belongs to the technical field of magnetic separation equipment.

Background

An electromagnetic iron remover is a mechanical device used for removing ferromagnetic substances in fluid materials or bulk materials. The working principle of the magnetic field iron removing machine is that an electric excitation coil is electrified to generate a magnetic field, so that the magnetic conduction net piece is magnetic, ferromagnetic substances in materials are adsorbed on the magnetic conduction net piece, the magnetism of the magnetic conduction net piece disappears after the electric excitation coil is powered off, the ferromagnetic substances adsorbed on the magnetic conduction net piece automatically fall off under the action of vibration and self gravity, and the function of automatically removing iron is achieved. The electromagnetic iron remover can automatically remove ferromagnetic substances in bulk non-magnetic materials and has higher working efficiency, so the electromagnetic iron remover is widely applied to the fields of ceramics, glass, chemical industry, plastics, food and the like.

Referring to fig. 1, the conventional electromagnetic iron remover comprises a frame 15, a housing 2 is mounted on the frame 15, the housing 2 comprises an upper magnetic yoke 35, a lower magnetic yoke 36, an inner cylinder 37 and an outer cylinder 38, the upper magnetic yoke 35 and the lower magnetic yoke 36 are arranged opposite to each other, the upper end and the lower end of the inner cylinder 37 are respectively connected with the inner hole edges of the upper magnetic yoke 35 and the lower magnetic yoke 36, the upper end and the lower end of the outer cylinder 38 are respectively connected with the outer peripheral edges of the upper magnetic yoke 35 and the lower magnetic yoke 36, the upper magnetic yoke 35, the lower magnetic yoke 36, the inner cylinder 37 and the outer cylinder 38 jointly form an annular electromagnetic cavity 1, a material channel 20 is mounted inside the inner cylinder 37, the upper end of the material channel 20 is a material inlet, the lower end of the material channel 20 is a material outlet, an excitation coil is mounted inside the annular electromagnetic cavity 1, a ferromagnetic substance adsorption element with a magnetic conduction function is mounted inside the material channel 20, the ferromagnetic substance adsorption element comprises a plurality of vertically arranged magnetic conduction net sheets 26 and a fixed middle shaft 25 for the magnetic conduction net sheets 26 which are connected in series, a feed hopper 23 is arranged at the material inlet, a shunt pipe 24 is arranged at the material outlet, and the shunt pipe 24 is provided with an iron outlet and a discharge outlet.

In the prior art, in order to improve the iron removal effect, the magnetic field intensity generated by the magnet exciting coil needs to be increased, so that the winding number and the winding tightness of the magnet exciting coil are continuously increased, the rated power of the magnet exciting coil becomes larger and larger, a large amount of heat can be generated during electrifying, and if the magnet exciting coil is not cooled in time, the fault that the magnet exciting coil is burnt out is easily caused, and an accident can also occur in a serious condition. The cooling method of the existing electromagnetic iron remover mainly comprises air cooling, water cooling and oil cooling. Air cooling is realized by forced air circulation heat dissipation, so that the requirement on the environment is high, and the cooling effect is difficult to play in hot summer; the water cooling is that a water cooling cavity is arranged at the periphery of the annular electromagnetic cavity, and the annular electromagnetic cavity is cooled by using cooling water, so that the problem that the cooling water enters the annular electromagnetic cavity easily occurs during use, and the electric leakage fault is caused; oil cooling is to add insulating cooling oil in the annular electromagnetic cavity, soak excitation coil in insulating oil, and the heat is transferred to outer barrel through insulating oil, leans on outer barrel to dispel the heat in the air, and the radiating effect is not ideal enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circulating oil-cooled electromagnetic iron remover, which aims to solve the problems, realize the efficient heat dissipation of an excitation coil, avoid the fault of the excitation coil and enable the electromagnetic iron remover to continuously work for a long time in a high-temperature and hot environment.

In order to achieve the purpose, the utility model discloses a circulating oil-cooled electromagnetic iron remover which comprises a shell, wherein an annular electromagnetic cavity is formed in the shell, an excitation coil is installed in the annular electromagnetic cavity, insulating cooling oil is installed in the annular electromagnetic cavity, the circulating oil-cooled electromagnetic iron remover further comprises a compressor, a condenser, an expansion valve and a heat exchanger, medium channels of the compressor, the condenser, the expansion valve and the heat exchanger are all connected to a low-boiling-point heat-conducting medium circulating pipeline, the annular electromagnetic cavity is connected to the insulating cooling oil circulating pipeline through a cold oil inlet and a hot oil outlet, a cooling oil channel of the heat exchanger is connected to the insulating cooling oil circulating pipeline, and a circulating pump is installed on the insulating cooling oil circulating pipeline. The utility model has two sets of circulating systems of insulating cooling oil and low-boiling-point heat-conducting medium, and the two sets of circulating systems can work simultaneously, the heat-absorbed insulating cooling oil and the heat-released low-boiling-point heat-conducting medium exchange heat in the heat exchanger, so that cold oil continuously enters the annular electromagnetic cavity, hot oil continuously flows out of the annular electromagnetic cavity, and the excitation coil is continuously cooled.

Furthermore, a drying filter is arranged on the part of the low-boiling-point heat-conducting medium circulating pipeline between the expansion valve and the condenser, and the expansion valve is connected with a pressure gauge. The drying filter is used for filtering and dehumidifying low-boiling-point heat-conducting media, normal operation of a low-boiling-point heat-conducting medium circulating system is guaranteed, and the pressure gauge is used for displaying working pressure and is convenient for debugging the expansion valve.

Preferably, the heat exchanger is a plate heat exchanger. The plate heat exchanger has higher heat transfer coefficient, and the heat exchange efficiency of the heat-conducting medium with low boiling point and the insulating cooling oil is higher.

Further, the casing is installed in the frame, and the box is installed to the lateral part of frame, compressor, condenser, expansion valve, heat exchanger, circulating pump are all installed in the box, and the top of box is equipped with the air outlet, and the position that is located the air outlet below in the box installs the heat extraction fan, and the condenser is located the below of heat extraction fan. The compressor, the condenser, the expansion valve, the heat exchanger and the circulating pump are independently arranged in the box body positioned on the side part of the frame, so that the compressor, the condenser, the expansion valve, the heat exchanger and the circulating pump are independent functional modules, the repair and the maintenance are convenient, the air outlet, the heat exhausting fan and the condenser are sequentially arranged from top to bottom, the rapid heat discharge is facilitated, and the heat flow cannot interfere with other parts.

Furthermore, the left side and the right side of the rack are respectively provided with a box body, and a set of compressor, condenser, expansion valve, heat exchanger and circulating pump are respectively arranged in the two box bodies. The two box bodies are symmetrically arranged at the left side and the right side of the electromagnetic iron remover, so that the structure is more compact, two sets of low-boiling-point heat-conducting media and insulating cooling oil circulating systems consisting of two sets of compressors, condensers, expansion valves, heat exchangers and circulating pumps further improve the cooling efficiency of the magnet exciting coil, and the two sets of systems can be used independently and can be mutually standby, and any one set of system can be maintained under the condition of no shutdown.

Furthermore, the cold oil inlet is communicated with the lower part of the annular electromagnetic cavity, the hot oil outlet is communicated with the upper part of the annular electromagnetic cavity, an auxiliary oil tank is mounted above the shell, and the auxiliary oil tank is communicated with the annular electromagnetic cavity. Insulating cooling oil can be stored to the bellytank, gets into the bellytank from annular electromagnetic cavity during the cooling oil inflation, from bellytank flow direction annular electromagnetic cavity during the cooling oil shrink, ensures insulating cooling oil's safe in utilization.

Furthermore, the middle of the shell is provided with a cavity which is communicated up and down, a material channel is arranged in the cavity, a first elastic supporting device is arranged above the material channel and is connected with a feed hopper through the first elastic supporting device, a second elastic supporting device is arranged below the material channel and is connected with a shunt tube through a flexible tube below the second elastic supporting device, a fixed middle shaft which penetrates through the material channel is connected between the feed hopper and the shunt tube, a plurality of magnetic conduction net pieces are arranged on the fixed middle shaft in a series mode, and a vibration motor is arranged at the upper end of the first elastic supporting device or the lower end of the second elastic supporting device. The excitation coil can produce the electromagnetic field when circular telegram, and the magnetic conduction net piece is magnetized, and the material gets into material passageway through the feeder hopper, and the magnetic conduction net piece adsorbs ferromagnetic substance and makes it separate with the material, and the material after the deironing flows out from the shunt tubes, after working a period, stops to supply the material in the feeder hopper, and the excitation coil outage, the magnetic conduction net piece loses magnetism, and under vibrating motor's effect, the ferromagnetic substance who adsorbs on the magnetic conduction net piece after the dropout outwards discharges through the shunt tubes.

Further, the shunt tubes includes the row's of vertical setting material pipe, is equipped with the side stream mouth on arranging the lateral wall of material pipe and is connected with row's iron pipe in side stream mouth department, the lower extreme of arranging the iron pipe inclines to the outside, the lower part of side stream mouth is equipped with horizontal hinge and is connected with the branch flitch that can overturn through horizontal hinge, divide the flitch to keep off in side stream mouth department after one side upset, divide the flitch to lean on the pipe wall of arranging the material pipe in the slant after the opposite side upset, horizontal hinge stretches out the shunt tubes outside and is connected with the swing arm by cylinder drive. The shunt pipe is used for shunting the materials after iron removal and ferromagnetic substances, in the iron removal process, the material distributing plate is driven by the cylinder to be blocked at the side flow port, and the iron removal materials are directly discharged downwards along the vertically arranged discharge pipe, so that the work efficiency of material iron removal is improved; after iron removal is finished, the material distributing plate is turned over to the other side and then leans against the pipe wall of the material discharging pipe, ferromagnetic substances falling off from the adsorption element cannot directly flow downwards, but flow to the iron discharging pipe through the side flow port, and finally flow outwards from the iron discharging pipe, so that the ferromagnetic substances are conveniently collected and centralized.

Further, the condenser is a water-cooled condenser. The condensing temperature of the water-cooled condenser is low, and the refrigerating efficiency can be improved.

Furthermore, the middle part of the shell is provided with a cavity which is communicated up and down, a material channel is arranged in the cavity and is connected with the feeding hole, the water filling hole and the discharging hole, and the lower end of the material channel is connected with the iron discharging hole and the residual material discharging hole. After the structure is adopted, the iron removing device can be used for removing iron from fluid materials (wet materials), when the iron removing device is used, the fluid materials enter from the feeding hole, are discharged from the discharging hole after iron removal is finished in the material channel, when iron is discharged, the residual materials in the material channel are firstly discharged from the residual material discharging hole, then the coil is powered off, the magnetic field disappears, washing water is injected from the water inlet, ferromagnetic impurities adsorbed on the magnetic medium carrier are washed away, and the ferromagnetic impurities are discharged from the iron discharging hole.

In conclusion, the beneficial effects of the utility model are as follows: the utility model can realize the high-efficient removal of ferromagnetic substances in fluid materials or bulk materials, and the utility model adopts the double-circulation system with insulating cooling oil and low-boiling-point heat-conducting medium to cool the magnet exciting coil generating the magnetic field, and the cooling mode is safe and high-efficient, so that the utility model can continuously work for a long time in a high-temperature hot environment.

Drawings

FIG. 1 is a schematic view of a conventional electromagnetic iron remover;

FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;

fig. 3 is a schematic view of a shunt and its associated structure according to the present invention;

fig. 4 is a cross-sectional view of one state of use of the shunt;

fig. 5 is a cross-sectional view of another state of use of the shunt;

fig. 6 is a schematic structural diagram of a second embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Referring to fig. 2, in a first embodiment of the present invention, the circulating oil-cooled electromagnetic iron remover disclosed by the present invention comprises a housing 2, wherein the housing 2 comprises an upper magnetic yoke 35, a lower magnetic yoke 36, an inner cylinder 37 and an outer cylinder 38 which connect the upper magnetic yoke 35 and the lower magnetic yoke 36, the inner cylinder 37 and the outer cylinder 38 together form an annular electromagnetic cavity 1, and an excitation coil 3 is installed in the annular electromagnetic cavity 1. In order to cool the magnet exciting coil 3, the annular electromagnetic cavity 1 is filled with insulating cooling oil, and the magnet exciting coil 3 enters the insulating cooling oil. The circulating oil-cooled electromagnetic iron remover also comprises a compressor 4, a condenser 5, an expansion valve 6 and a heat exchanger 7, wherein medium channels of the compressor 4, the condenser 5, the expansion valve 6 and the heat exchanger 7 are all connected to a low-boiling-point heat-conducting medium circulating pipeline 8. The drying filter 13 is installed at the position between the expansion valve 6 and the condenser 5 on the low-boiling-point heat-conducting medium circulating pipeline 8, the expansion valve 6 is connected with the pressure gauge 14, the drying filter 13 is used for filtering and dehumidifying low-boiling-point heat-conducting medium, normal operation of a low-boiling-point heat-conducting medium circulating system is guaranteed, and the pressure gauge 14 is used for displaying working pressure, so that the expansion valve 6 is conveniently debugged.

The annular electromagnetic cavity 1 is connected to an insulating cooling oil circulation pipeline 11 through a cold oil inlet 9 and a hot oil outlet 10, a cooling oil channel of the heat exchanger 7 is connected to the insulating cooling oil circulation pipeline 11, and a circulation pump 12 is installed on the insulating cooling oil circulation pipeline 11. In this embodiment, the preferred heat exchanger 7 is a plate heat exchanger; the plate heat exchanger has higher heat transfer coefficient, and the heat exchange efficiency of the heat-conducting medium with low boiling point and the insulating cooling oil is higher. Of course, in other embodiments of the utility model, the heat exchanger 7 may be another type of heat exchanger. In the embodiment, the cold oil inlet 9 is communicated with the lower part of the annular electromagnetic cavity 1, the hot oil outlet 10 is communicated with the upper part of the annular electromagnetic cavity 1, the auxiliary oil tank 19 is arranged above the shell 2, and the auxiliary oil tank 19 is communicated with the annular electromagnetic cavity 1. Insulating cooling oil can be stored to bellytank 19, gets into bellytank 19 from annular electromagnetism chamber 1 during the cooling oil inflation, flows to annular electromagnetism chamber 1 from bellytank 19 during the cooling oil shrink, ensures insulating cooling oil's safety in utilization.

After the improvement: in the low-boiling point heat-conducting medium circulation pipeline 8, low-pressure gaseous heat-conducting medium from the heat exchanger is compressed into high-temperature high-pressure gaseous heat-conducting medium by the compressor 4, the high-temperature high-pressure gaseous heat-conducting medium is sent to the condenser 5 for cooling, and then is changed into medium-temperature high-pressure liquid medium, the medium-temperature high-pressure liquid medium is throttled and depressurized by the expansion valve 6 to be changed into low-temperature low-pressure gas-liquid mixture, and the low-temperature low-pressure gas-liquid mixture is gasified into gaseous state after absorbing heat in the heat exchanger 7 and then returns to the compressor 4 for continuous compression, so that the circulation of the low-boiling point heat-conducting medium is realized. The circulating pump 12 enables the insulating cooling oil to circularly flow in the insulating cooling oil circulating pipeline 11, the insulating cooling oil absorbs heat generated by the magnet exciting coil 3 when passing through the annular electromagnetic cavity 1, the heat-absorbed insulating cooling oil enters the heat exchanger 7 to exchange heat with a low-boiling-point heat-conducting medium flowing through the heat exchanger to be cooled, and the cooled insulating cooling oil enters the annular electromagnetic cavity 1 again through the cold oil inlet 9 to cool the magnet exciting coil 3. The utility model has two sets of circulating systems of insulating cooling oil and low boiling point heat-conducting medium, and the two sets of circulating systems can work simultaneously, the heat-absorbed insulating cooling oil and the heat-released low boiling point heat-conducting medium exchange heat in the heat exchanger 7, thereby enabling the cold oil to continuously enter the annular electromagnetic cavity 1 and the hot oil to continuously flow out of the annular electromagnetic cavity 1, and continuously cooling the excitation coil 3.

Referring to fig. 2, in a further modification of the first embodiment of the present invention, the housing 2 is mounted on a frame 15, two tanks 16 are mounted on the left and right sides of the frame 15, and a set of the compressor 4, the condenser 5, the expansion valve 6, the heat exchanger 7, and the circulation pump 12 is provided in each of the two tanks 16. The two box bodies 16 are symmetrically arranged at the left side and the right side of the electromagnetic iron remover, so that the structure is more compact, two sets of low-boiling-point heat-conducting medium and insulating cooling oil circulating systems consisting of the two sets of compressors 4, the condenser 5, the expansion valve 6, the heat exchanger 7 and the circulating pump 12 further improve the cooling efficiency of the magnet exciting coil 3, and the two sets of systems can be used independently and mutually standby, and can maintain any one set of system without shutdown. An air outlet 17 is arranged at the top of the box body 16, a heat exhausting fan 18 is arranged at the position below the air outlet 17 in the box body 16, and the condenser 5 is positioned below the heat exhausting fan 18. The compressor 4, the condenser 5, the expansion valve 6, the heat exchanger 7 and the circulating pump 12 are independently arranged in the box 16 positioned on the side part of the frame 15 to form independent functional modules, the repair and the maintenance are convenient, the air outlet 17, the heat exhausting fan 18 and the condenser 5 are sequentially arranged up and down, the rapid heat discharge is facilitated, and the heat flow cannot interfere with other parts. In the present embodiment, the condenser 5 is preferably an air-cooled condenser. Of course, in other embodiments of the present invention, the condenser 5 may also be a water-cooled condenser, and the condensing temperature of the water-cooled condenser is low, so as to improve the refrigeration efficiency. In this embodiment, two tanks 16 are respectively installed on the left and right sides of the frame 15, and a set of compressor 4, condenser 5, expansion valve 6, heat exchanger 7, and circulating pump 12 are respectively installed in the two tanks 16. In other embodiments of the present invention, only one set of the compressor 4, the condenser 5, the expansion valve 6, the heat exchanger 7, and the circulation pump 12 may be provided, and the arrangement of the compressor 4, the condenser 5, the expansion valve 6, the heat exchanger 7, and the circulation pump 12 may be different from that of the present embodiment.

Referring to fig. 2, the circulating oil-cooled electromagnetic iron remover in the first embodiment is mainly used for removing iron from bulk materials (dry materials), in this embodiment, a cavity which is through from top to bottom is formed in the middle of the housing 2, a material channel 20 is formed in the cavity, a first elastic supporting device 21 is arranged above the material channel 20 and is connected with a feed hopper 23 through the first elastic supporting device 21, a second elastic supporting device 22 is arranged below the material channel 20 and is connected with a shunt tube 24 through a flexible tube below the second elastic supporting device 22, a fixed central shaft 25 which penetrates through the material channel 20 is connected between the feed hopper 23 and the shunt tube 24, a plurality of magnetic conductive mesh sheets 26 are arranged on the fixed central shaft 25 in series, and a vibration motor 27 is mounted at the upper end of the first elastic supporting device 21 or at the lower end of the second elastic supporting device 22. In operation, when the excitation coil 3 is powered on, an electromagnetic field is generated, the magnetic conduction mesh sheet 26 is magnetized, materials enter the material channel 20 through the feed hopper 23, the magnetic conduction mesh sheet 26 adsorbs ferromagnetic substances to enable the ferromagnetic substances to be separated from the materials, the materials after iron removal flow out of the shunt pipe 24, after the materials are operated for a period of time, the materials are stopped being supplied into the feed hopper 23, the excitation coil 3 is powered off, the magnetic conduction mesh sheet 26 loses magnetism, the vibration motor 27 operates, the ferromagnetic substances adsorbed on the magnetic conduction mesh sheet 26 fall off and are discharged outwards through the shunt pipe 24, the shunt pipe 24 can adopt the structure shown in fig. 2, the herringbone structure shown in fig. 1 can also be adopted, and of course, other structures capable of realizing the respective discharge of the materials and the ferromagnetic substances can also be adopted.

Referring to fig. 3, 4 and 5, in a further modification of the first embodiment of the present invention, the dividing pipe 24 includes a vertically arranged discharge pipe 28, a lateral flow port 29 is arranged on a side wall of the discharge pipe 28 and an iron discharge pipe 30 is connected to the lateral flow port 29, a lower end of the iron discharge pipe 30 is inclined to the outside, a horizontal hinge shaft 31 is arranged at a lower portion of the lateral flow port 29 and is connected with a reversible dividing plate 32 through the horizontal hinge shaft 31, the dividing plate 32 can be blocked at the lateral flow port 29 after being turned to one side, the dividing plate 32 can lean against a pipe wall of the discharge pipe 28 after being turned to the other side, and the horizontal hinge shaft 31 extends out of the dividing pipe 24 and is connected with a swing arm 34 driven by a cylinder 33. The shunt pipe 24 is used for shunting the materials after iron removal and ferromagnetic substances, in the iron removal process, the material distributing plate 32 is driven by the cylinder 33 to be blocked at the side flow port 29, and the iron-removed materials are directly discharged downwards along the vertically arranged discharge pipe 28, so that the iron removal efficiency of the materials is improved; after the iron removal is finished, the material distributing plate 32 is turned over to the other side and then leans against the pipe wall of the material discharging pipe 28, ferromagnetic substances falling off from the adsorption element cannot directly flow downwards, but flow towards the iron discharging pipe 30 through the side flow port 29, and finally flow outwards from the iron discharging pipe 30, so that the ferromagnetic substances are conveniently collected and centralized.

Referring to fig. 6, the circulating oil cooling electromagnetic iron remover in the second embodiment is mainly used for removing iron from wet fluid materials, in this embodiment, a cavity which is through from top to bottom is formed in the middle of the housing 2, a material channel 20 is arranged in the cavity, the material channel 20 is connected with a feeding port (not shown), a water filling port 50 and a discharging port 51, and the lower end of the material channel 20 is connected with an iron discharging port 52 and a residual material discharging port 53. During use, fluid materials enter from the feeding hole and are discharged from the discharging hole 51 after iron removal is finished in the material channel 20, and during iron removal, residual materials in the material channel 20 are discharged from the residual discharging hole 53 firstly, then the coil is powered off, the magnetic field disappears, washing water is injected from the water inlet 50, ferromagnetic impurities adsorbed on the magnetic medium carrier are washed away, and the washing water is discharged from the iron removing hole 52.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A circulating oil cooling electromagnetic iron remover comprises a shell (2), an annular electromagnetic cavity (1) is arranged in the shell (2), an excitation coil (3) is arranged in the annular electromagnetic cavity (1), insulating cooling oil is arranged in the annular electromagnetic cavity (1), the circulating oil cooling electromagnetic iron remover is characterized by further comprising a compressor (4), a condenser (5), an expansion valve (6) and a heat exchanger (7), medium channels of the compressor (4), the condenser (5), the expansion valve (6) and the heat exchanger (7) are connected to a low-boiling-point heat-conducting medium circulating pipeline (8), an annular electromagnetic cavity (1) is connected to an insulating cooling oil circulating pipeline (11) through a cold oil inlet (9) and a hot oil outlet (10), a cooling oil channel of the heat exchanger (7) is connected to the insulating cooling oil circulating pipeline (11), and a circulating pump (12) is installed on the insulating cooling oil circulating pipeline (11).

2. The circulating oil-cooled electromagnetic iron remover according to claim 1, wherein a drying filter (13) is installed on the low boiling point heat-conducting medium circulating line (8) between the expansion valve (6) and the condenser (5), and the expansion valve (6) is connected with a pressure gauge (14).

3. The circulating oil-cooled electromagnetic iron separator as claimed in claim 1, characterized in that said heat exchanger (7) is a plate heat exchanger.

4. The circulating oil-cooled electromagnetic iron remover according to claim 1, wherein said housing (2) is mounted on a frame (15), a box (16) is mounted on the side of the frame (15), said compressor (4), condenser (5), expansion valve (6), heat exchanger (7) and circulating pump (12) are all mounted in the box (16), an air outlet (17) is disposed on the top of the box (16), a heat exhausting fan (18) is mounted in the box (16) below the air outlet (17), and the condenser (5) is disposed below the heat exhausting fan (18).

5. The circulating oil-cooled electromagnetic iron remover according to claim 4, characterized in that a box (16) is installed on each of the left and right sides of said frame (15), and a set of compressor (4), condenser (5), expansion valve (6), heat exchanger (7) and circulating pump (12) are installed in each of the two boxes (16).

6. The circulating oil cooling electromagnetic iron remover according to claim 1, wherein said cold oil inlet (9) is connected to the lower portion of the annular electromagnetic cavity (1), said hot oil outlet (10) is connected to the upper portion of the annular electromagnetic cavity (1), a secondary oil tank (19) is installed above the housing (2), and said secondary oil tank (19) is connected to the annular electromagnetic cavity (1).

7. The circulating oil-cooled electromagnetic iron remover as claimed in claim 1, wherein the middle of the housing (2) has a cavity which is through from top to bottom, a material channel (20) is arranged in the cavity, a first elastic supporting device (21) is arranged above the material channel (20) and is connected with a feed hopper (23) through the first elastic supporting device (21), a second elastic supporting device (22) is arranged below the material channel (20) and is connected with a shunt tube (24) through a flexible tube below the second elastic supporting device (22), a fixed middle shaft (25) which passes through the material channel (20) is connected between the feed hopper (23) and the shunt tube (24), a plurality of magnetic conducting net pieces (26) are arranged on the fixed middle shaft (25) in series, and a vibration motor (27) is arranged at the upper end of the first elastic supporting device (21) or the lower end of the second elastic supporting device (22).

8. The circulating oil-cooled electromagnetic iron remover as claimed in claim 7, wherein said dividing tube (24) comprises a vertically arranged discharge tube (28), a lateral flow port (29) is arranged on the side wall of the discharge tube (28) and an iron discharge tube (30) is connected to the lateral flow port (29), the lower end of the iron discharge tube (30) is inclined to the outside, a horizontal hinge shaft (31) is arranged at the lower part of the lateral flow port (29) and connected with a reversible material dividing plate (32) through the horizontal hinge shaft (31), the material dividing plate (32) can be blocked at the lateral flow port (29) after being turned to one side, the material dividing plate (32) can lean against the wall of the discharge tube (28) after being turned to the other side, and the horizontal hinge shaft (31) extends out of the dividing tube (24) and is connected with a swing arm (34) driven by a cylinder (33).

9. The circulating oil-cooled electromagnetic iron remover according to claim 1, wherein said condenser (5) is a water-cooled condenser.

10. The circulating oil cooling electromagnetic iron remover according to any of the claims 1 to 6, characterized in that the middle of the shell (2) is provided with a cavity which is through up and down, a material channel (20) is arranged in the cavity, the material channel (20) is connected with a feeding hole, a water filling hole (50) and a discharging hole (51), and the lower end of the material channel (20) is connected with an iron discharging hole (52) and a residual material discharging hole (53).