Area variable temperature type electromagnetic induction heating wax melting furnace

Abstract

The application discloses a regional variable-temperature electromagnetic induction heating wax melting furnace, and relates to the technical field of current transformers, which comprises a melting furnace body, an electromagnetic induction coil connected with a high-frequency power supply is arranged on the outer wall of the melting furnace body, an initial melting zone, a variable-temperature zone and a discharging zone are arranged in the melting furnace body, the discharging zone is located at the inner bottom of the melting furnace body, the variable-temperature zone is located on the upper side of the discharging zone, and the initial melting zone is located on the upper side of the variable-temperature zone; a space occupying block is arranged in the variable-temperature zone, the shape of the space occupying block is matched with the shape of the inner wall of the melting furnace body, the upper side of the space occupying block is the initial melting zone, the lower side of the space occupying block is the discharging zone, and a honeycomb through hole is arranged on the space occupying block. The melting furnace body is divided into three regions by the variable-temperature zone, the lower side wax solution is heated, the upper side more wax solution is kept at a lower melting temperature, the energy loss is greatly reduced, the corresponding high-temperature wax liquid is discharged only at the required discharging amount, and the upper wax liquid is kept in the melting state by using lower power.

Description

Technical Field

[0001] This invention relates to the field of current transformer technology, specifically to a zone-temperature variable-temperature electromagnetic induction heating wax melting furnace. Background Technology

[0002] Launching a ship refers to the process of moving a vessel from the assembly area to the water after most of its construction has been completed on the slipway or in the dry dock; it's the process of transforming a vessel that was originally supported at the bottom on the slipway or in the dry dock into a floating state in the water. The most common method is gravity launching from the slipway. Longitudinal greased slipway launching is a traditional and durable launching system that integrates the slipway and the slipway. During the launching operation, a certain thickness of grease is first applied to the slipway to reduce friction. This grease was previously often made from tallow, but now it is often made from different proportions of paraffin wax, stearic acid, and rosin. The vessel then moves onto the slipway and slide plate under its own weight, and the vessel, along with the support structure and slide plate, slides into the water, simultaneously floating on the surface due to its own buoyancy, thus completing the launching process.

[0003] The wax applied to the slide needs to be melted first. The traditional way to melt wax is to add the wax into a cylindrical wax melting furnace, such as the waste paraffin wax recycling furnace disclosed in application number: CN201420241070.1, or the wax melting heating furnace disclosed in application number: CN202021381779.3. The wax melting furnaces are all barrel-shaped containers, and the interior of the container is hollow, so that the wax block melts in the barrel-shaped container. Due to the hollow interior, the heat convection between the upper and lower layers makes the temperature of the upper and lower layers inside the barrel-shaped container uniform. The melting point of wax is 68-78℃, and its boiling point is mostly above 300℃. However, in the actual process of applying wax to the slide, the wax needs to be heated to about 180-200℃. Maintaining a high temperature of the molten wax is necessary because the distance and operation required for the wax to be poured onto the slide take time, and the wax needs to be heated and maintained at a high temperature after melting. However, the amount of wax taken out each time is much less than the amount of wax melted in the wax furnace. If, as described in the aforementioned patented technology, all the wax in the container is kept at a high temperature, it would require a lot of energy and is not economical. Alternatively, separate wax furnaces with different temperatures could be set up to store the wax at different temperatures, but this would require purchasing multiple wax furnaces and installing transmission pipelines between them, undoubtedly increasing equipment costs.

[0004] In view of the above, it is necessary to propose a regional variable temperature electromagnetic induction heating wax melting furnace to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems by providing a zone-temperature variable electromagnetic induction heating wax melting furnace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a zone-temperature variable electromagnetic induction heating wax melting furnace, comprising a furnace body, wherein an electromagnetic induction coil connected to a high-frequency power supply is provided on the outer wall of the furnace body; the furnace body is provided with a primary melting zone, a variable temperature zone, and a discharge zone, wherein the discharge zone is located at the inner bottom of the furnace body, the variable temperature zone is located above the discharge zone, and the primary melting zone is located above the variable temperature zone;

[0007] The variable temperature zone is provided with a space occupant block. The shape of the space occupant block matches the shape of the inner wall of the furnace. The upper side of the space occupant block is the initial melting zone, and the lower side is the discharge zone. The space occupant block is provided with honeycomb through holes. The upper end of the honeycomb through holes is connected to the initial melting zone, and the lower end is connected to the discharge zone.

[0008] The initial melting zone is used to accommodate the wax block feed and maintain the wax liquid at a low temperature during melting.

[0009] The variable temperature zone is used to separate the furnace body and limit the flow of wax liquid from the initial melting zone into the variable temperature zone, thereby rapidly heating the wax liquid in the honeycomb through holes.

[0010] The discharge zone is used to maintain the high-temperature melting state of the molten wax.

[0011] Furthermore, the honeycomb through-hole is a columnar, longitudinally penetrating hole, and the honeycomb through-hole is arranged to extend vertically in the longitudinal direction.

[0012] Furthermore, the honeycomb through-hole includes a middle ring hole and an outer ring hole, and a variable temperature heating mechanism is provided between the middle ring hole and the outer ring hole, as well as inside the middle ring hole.

[0013] Furthermore, cylindrical cavities for setting up a variable temperature heating mechanism are provided between the middle ring hole and the outer ring hole, as well as inside the middle ring hole. The variable temperature heating mechanism includes an inner electromagnetic coil, and electromagnetic heating sleeves are provided on both the inner and outer sides of the inner electromagnetic coil. The electromagnetic heating sleeves are made of ferromagnetic material.

[0014] Furthermore, the space occupant block is made of aluminum, a material with high thermal conductivity.

[0015] Furthermore, a bottom electromagnetic coil is provided on the outer side of the bottom of the furnace body, a temperature-changing electromagnetic coil is wound on the lower part of the outer wall of the furnace body corresponding to the position of the temperature-changing zone, and an initial melting electromagnetic coil is wound on the upper part of the outer wall of the furnace body corresponding to the position of the initial melting zone.

[0016] Furthermore, the cylindrical cavity is a cavity placed inside the space occupier, and the cylindrical cavity is filled with insulating heat-conducting oil, which is used to fill the gap between the variable temperature heating mechanism and the cylindrical cavity.

[0017] Furthermore, the furnace body is provided with a cover on top, and a liquid level sensor is provided on the cover.

[0018] Furthermore, at least one discharge pipe is connected to the four side walls of the discharge area.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the present invention uses a variable temperature zone to divide the furnace body into three areas, which makes it easier to control the heating of the wax solution in the lower part, while the wax solution in the upper part can be kept at a lower melting temperature, thereby greatly reducing energy loss. The corresponding high temperature wax solution is discharged only at the required discharge amount, and the upper wax solution is kept in a melting state with lower power. Attached Figure Description

[0020] Figure 1 This is one of the isometric views of a zone-temperature variable-temperature electromagnetic induction heating wax melting furnace according to the present invention;

[0021] Figure 2 This is one of the longitudinal cross-sectional schematic diagrams of a zone-temperature variable-temperature electromagnetic induction heating wax melting furnace according to the present invention;

[0022] Figure 3 This is the second isometric view of a regional temperature-variable electromagnetic induction heating wax melting furnace according to the present invention;

[0023] Figure 4 This is a second longitudinal cross-sectional schematic diagram of a regional variable temperature electromagnetic induction heating wax melting furnace according to the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of a zone-temperature variable electromagnetic induction heating wax furnace according to the present invention;

[0025] Figure 6 This is a top view of a zone-temperature variable-temperature electromagnetic induction heating wax melting furnace according to the present invention;

[0026] In the diagram: 1. Furnace body; 2. Electromagnetic induction coil; 3. Initial melting zone; 4. Variable temperature zone; 5. Discharge zone; 6. Space occupier; 7. Honeycomb through-hole; 8. Middle ring hole; 9. Outer ring hole; 10. Variable temperature heating mechanism; 11. Cylindrical cavity; 12. Inner electromagnetic coil; 13. Electromagnetic heating jacket; 14. Bottom electromagnetic coil; 15. Variable temperature electromagnetic coil; 16. Initial melting electromagnetic coil; 17. Insulating heat-conducting oil; 18. Cover; 19. Liquid level sensor; 20. Discharge pipe; 21. Protective pipe. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1:

[0029] A type of zone-temperature variable-temperature electromagnetic induction heating wax melting furnace, such as Figure 1 As shown, the device includes a furnace body 1. The outer wall of the furnace body 1 is equipped with an electromagnetic induction coil 2 connected to a high-frequency power supply. The furnace body 1 should be made of a magnetizable ferromagnetic material, such as iron. A magnetic field is generated by the electronic circuit board components. When an iron-containing container is placed in the alternating magnetic field, the surface of the container cuts the alternating magnetic lines of force, generating alternating eddy currents in the metal part inside the container. In this device, when a high-frequency alternating current is applied to the electromagnetic induction coil 2, an alternating magnetic field is formed around the coil. The eddy currents cause the iron atoms inside the furnace body 1 to move at high speed and randomly. The atoms collide and rub against each other, generating heat. Therefore, this embodiment uses a magnetizable ferromagnetic material to make the furnace body 1, thereby heating the wax raw materials inside. The furnace body 1 achieves self-heating under the principle of electromagnetic induction heating, melting the wax raw materials inside the furnace.

[0030] Unlike existing designs, such as Figure 2 As shown, the furnace body 1 of this device is divided into an initial melting zone 3, a variable temperature zone 4, and a discharge zone 5. The discharge zone 5 is located at the inner bottom of the furnace body 1, and at least one discharge pipe 20 is connected to the four side walls of the discharge zone 5. The variable temperature zone 4 is located above the discharge zone 5, and the initial melting zone 3 is located above the variable temperature zone 4. In actual use, the initial melting zone 3 is used to receive the wax block feed and maintain the wax liquid in a low-temperature melting state. Because the wax liquid is maintained in the initial melting state, the temperature in this area is relatively low, and correspondingly, the energy consumption required to maintain this part is less, which can help achieve energy saving.

[0031] The variable temperature zone 4 is used to separate the furnace body 1 and limit the flow rate of molten wax from the initial melting zone 3 into the variable temperature zone 4, thereby rapidly heating the molten wax within the honeycomb through-holes 7. Specifically, the variable temperature zone 4 is equipped with a space-occupying block 6, the shape of which matches the shape of the inner wall of the furnace body 1, such as... Figure 3As shown in the illustrated embodiment, the space occupier 6 is located on the lower side of the furnace body 1, with its outer wall fitting against the inner wall of the furnace body. To allow the molten wax above it to pass through the space occupier 6, honeycomb through-holes 7 are provided through the space occupier 6. The space occupier 6 occupies a large portion of the temperature-changing zone 4, and the honeycomb through-holes 7, designed to be of a specific size, allow the molten wax to pass through and enter the discharge zone 5 below. The upper side of the space occupier 6 is the initial melting zone 3, and the lower side is the discharge zone 5. The upper end of the honeycomb through-holes 7 is connected to the initial melting zone 3, and the lower end is connected to the discharge zone 5. It can be understood that in this embodiment, the space occupier... The material used for the space occupier 6 should be one that does not chemically react with the wax solution and has good thermal conductivity. Preferably, the space occupier 6 is made of aluminum alloy. Since the space occupier 6 occupies most of the space in this area, the volume of wax solution remaining in the honeycomb through-hole 7 is relatively small. Therefore, the heating rate of this area for a small amount of wax solution is very fast. Furthermore, through the aluminum space occupier 6 with good thermal conductivity, the temperature of the wax solution in this area can be raised relatively quickly as it passes through the honeycomb through-hole 7 from top to bottom, and finally reaches the design temperature of 200°C when it reaches the discharge area 5.

[0032] The discharge zone 5 is used to maintain the wax liquid in a high-temperature molten state. The height of the discharge zone 5, separated by the space-occupying block 6, is much smaller than the height of the initial melting zone 3, and as... Figure 3 As shown, a bottom electromagnetic coil 14 is also provided at the bottom of the furnace body 1. The bottom electromagnetic coil 14 is used to maintain the small volume of the discharge zone 5 at the bottom at a high temperature. Therefore, in this embodiment, by limiting the flow of the wax solution into the temperature-changing zone 4 and the discharge zone 5, the entire device only needs to maintain the lower part of the furnace body 1 at a high temperature. The height of the upper primary melting zone 3 can be increased according to production needs to increase its capacity. Furthermore, maintaining the primary melting zone 3 at a low temperature consumes relatively little energy. Therefore, this device has good economic benefits. This device only needs to provide sufficient electrical energy to maintain the temperature at the bottom of the furnace body at the preset temperature. Therefore, this device not only meets the demand for high-temperature wax solution but also achieves energy saving and emission reduction.

[0033] Furthermore, such as Figure 4 As shown, the furnace body 1 is provided with a cover 18 on top, and a liquid level sensor 19 is provided on the cover 18. In the embodiment shown in the figure, the liquid level sensor 19 is an ultrasonic sensor. The sensor emits an ultrasonic pulse signal. The time it takes for the signal to return to the sensor after reaching the liquid surface can be processed to indicate the distance between the sensor and the liquid surface. In actual use, the operator can determine whether to add wax raw materials based on this data, avoiding the dangerous operation of direct visual observation.

[0034] Example 2:

[0035] In such Figure 3-6 In the illustrated embodiment, the honeycomb through-hole 7 is a columnar, longitudinally penetrating hole, and the honeycomb through-hole 7 extends vertically in the longitudinal direction. In other embodiments, the shape of the through-hole can be designed as a prismatic through-hole as needed, or the honeycomb through-hole 7 can be designed as a spiral penetrating hole. The spiral structure can further increase the heat exchange contact area, reduce the flow rate of the internal wax liquid, and increase the time that the wax liquid stays in the through-hole.

[0036] Example 3:

[0037] like Figure 3 , Figure 5 As shown, a bottom electromagnetic coil 14 is provided on the outer side of the bottom of the furnace body 1, a variable temperature electromagnetic coil 15 is wound on the lower part of the outer wall of the furnace body 1 corresponding to the position of the variable temperature zone 4, and a primary melting electromagnetic coil 16 is wound on the upper part of the outer wall of the furnace body 1 corresponding to the position of the primary melting zone 3. In order to accurately control the temperature of each area and achieve maximum energy saving, the primary melting zone 3 on the upper side requires lower temperature control and therefore requires lower power consumption. It is controlled independently by three coils. The variable temperature zone 4 on the lower side needs to quickly heat up the small portion of wax liquid passing through the honeycomb through-holes 7. In order to accurately control its temperature rise, an independent variable temperature electromagnetic coil 15 is used to control its temperature rise. Similarly, the bottom electromagnetic coil 14 is used to accurately control the temperature of the discharge zone 5 at the bottom.

[0038] Example 4:

[0039] like Figure 6 As shown, the honeycomb through-hole 7 includes a middle ring hole 8 and an outer ring hole 9, and a variable temperature heating mechanism 10 is provided between the middle ring hole 8 and the outer ring hole 9, as well as inside the middle ring hole 8. Figure 4 , Figure 5 As shown, in order to ensure the heating effect of the space occupier block 6 in the variable temperature zone 4 and to improve the heating rate, a variable temperature heating mechanism 10 is provided in the area near the interior of the space occupier block 6. In the embodiment shown in the figure, a cylindrical cavity 11 for setting the variable temperature heating mechanism 10 is provided between the middle ring hole 8 and the outer ring hole 9 and inside the middle ring hole 8. The cylindrical cavity 11 is an annular cavity, which is set in the space occupier block 6 where the middle ring hole 8 and the outer ring hole 9 are spaced apart, and inside the middle ring hole 8.

[0040] The variable-temperature heating mechanism 10 includes an inner electromagnetic coil 12, with electromagnetic heating sleeves 13 on both the inner and outer sides of the inner electromagnetic coil 12. The electromagnetic heating sleeves 13 are made of ferromagnetic material, and the principle is the same as that of electromagnetic induction heating described in Embodiment 1. Since the space occupier 6 is made of aluminum, it cannot be magnetized and cannot be directly heated. Therefore, a variable-temperature heating mechanism 10 is specially set inside it for internal heating. When the inner electromagnetic coil 12 is energized, the magnetizable electromagnetic heating sleeves 13 on its inner and outer sides heat up, thereby achieving the effect of internal heating. The cylindrical cavity 11 is a cavity placed inside the space occupier 6. In a preferred embodiment, the cylindrical cavity 11 is filled with insulating heat-conducting oil 17. The insulating heat-conducting oil 17 is used to fill the gap between the variable-temperature heating mechanism 10 and the cylindrical cavity 11. When the variable-temperature heating mechanism 10 is used to heat the space occupier 6, the gap inside is essentially air heat transfer. In order to improve the heat transfer effect, the gap is filled with insulating heat-conducting oil 17, thereby improving the internal heat transfer effect.

[0041] like Figure 5 As shown, the power transmission line of the inner electromagnetic coil 12 can be connected to the outside of the furnace body 1 using the protective tube 21 shown in the figure, which facilitates the laying of its circuit.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A zone temperature-variable electromagnetic induction heating wax melting furnace comprising a furnace body (1), characterized in that, The outer wall of the furnace body (1) is provided with an electromagnetic induction coil (2) connected with a high-frequency power source; the furnace body (1) is internally provided with a primary melting zone (3), a temperature changing zone (4) and a discharging zone (5), the discharging zone (5) is located at the inner bottom of the furnace body (1), the temperature changing zone (4) is located above the discharging zone (5), and the primary melting zone (3) is located above the temperature changing zone (4); The temperature changing zone (4) is internally provided with a space occupying block (6), the shape of the space occupying block (6) is matched with the shape of the inner wall of the furnace body (1), the upper side of the space occupying block (6) is the primary melting zone (3), and the lower side is the discharging zone (5), a honeycomb through hole (7) is vertically arranged on the space occupying block (6), the upper end of the honeycomb through hole (7) is communicated with the primary melting zone (3), and the lower end is communicated with the discharging zone (5); The primary melting zone (3) is used for accommodating wax block feeding and maintaining the low-temperature melting state of the wax liquid; The temperature changing zone (4) is used for separating the furnace body (1) and limiting the wax liquid flow of the primary melting zone (3) into the temperature changing zone (4) and rapidly heating the wax liquid in the honeycomb through hole (7); The discharging zone (5) is used for maintaining the high-temperature melting state of the wax liquid.

2. The electrically heated wax melter of claim 1, wherein, The honeycomb through hole (7) is a columnar vertically penetrating hole, and the honeycomb through hole (7) is vertically and perpendicularly arranged.

3. The electrically heated wax melter of claim 2, wherein, The honeycomb through hole (7) comprises a middle circle hole (8) and an outer circle hole (9), and a temperature changing heating mechanism (10) is arranged between the middle circle hole (8) and the outer circle hole (9) and on the inner side of the middle circle hole (8).

4. The electrically heated wax melter of claim 3, wherein, The middle circle hole (8) and the outer circle hole (9) and the inner side of the middle circle hole (8) are all provided with a cylindrical cavity (11) for arranging the temperature changing heating mechanism (10), the temperature changing heating mechanism (10) comprises an inner side electromagnetic coil (12), electromagnetic heating sleeves (13) are arranged on the inner and outer sides of the inner side electromagnetic coil (12), and the electromagnetic heating sleeves (13) are made of ferromagnetic material.

5. The electrically heated wax melter of claim 1, wherein: The space occupying block (6) is made of aluminum material with high heat conduction efficiency.

6. The electrically heated wax melter of claim 1, wherein: A bottom electromagnetic coil (14) is arranged on the bottom outer side of the furnace body (1), a temperature changing electromagnetic coil (15) is arranged on the lower part of the outer wall of the furnace body (1) and corresponds to the position of the temperature changing zone (4), and a primary melting electromagnetic coil (16) is arranged on the upper part of the outer wall of the furnace body (1) and corresponds to the position of the primary melting zone (3).

7. The electrically heated wax melter of claim 4 wherein, The cylindrical cavity (11) is a cavity arranged in the space occupying block (6), the cylindrical cavity (11) is filled with insulating heat conducting oil (17), and the insulating heat conducting oil (17) is used for filling the gap between the temperature changing heating mechanism (10) and the cylindrical cavity (11).

8. The electrically heated wax melter of claim 1, wherein: A cover (18) is arranged on the top of the furnace body (1), and a liquid level sensor (19) is arranged on the cover (18).

9. The electrically heated wax melter of claim 1, wherein: At least one discharging pipe (20) is connected to the side wall around the discharging zone (5).

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