Cooling device for medium frequency induction furnace

Abstract

The application relates to a cooling device for a medium-frequency induction furnace, which comprises a water tank, a water adding pipe arranged on the water tank, a backwater pipe and a water outlet pipe arranged on the water tank and communicated with an induction coil water channel, a water outlet disc arranged in the water tank and communicated with the backwater pipe and the water adding pipe, a plurality of branch water pipes arranged on the water outlet disc in communication, a mounting plate arranged in the water tank, a filter cylinder corresponding to each branch water pipe arranged on the mounting plate, a filter assembly arranged in the filter cylinder and used for filtering cooling water, and a water outlet of each branch water pipe arranged towards the filter cylinder. The application can reduce the generation of water scale in the induction coil water channel and improve the cooling effect of the cooling device.

Description

Technical Field

[0001] This application relates to the field of induction furnace cooling technology, and in particular to a cooling device for a medium-frequency induction furnace. Background Technology

[0002] An intermediate frequency furnace is a power supply device that converts 50Hz AC power into intermediate frequency power. It mainly consists of a power supply, an induction coil, and a crucible. During the operation of the intermediate frequency induction furnace, the induction coil generates a large amount of Joule heat under the action of high-frequency alternating current. A cooling device is needed to dissipate the heat in time to ensure the normal operation of the equipment.

[0003] Existing medium-frequency induction furnace cooling devices typically employ water-cooled cooling systems. Cooling water is supplied to the water channels within the induction coil via a water tank. As the cooling water circulates between the induction coil and the water tank, it carries away the heat generated by the induction coil, thereby maintaining the temperature balance of the various components of the equipment and ensuring its normal operation. However, existing cooling water typically contains impurities. When the cooling water passes through the high-temperature induction coil channel, it absorbs heat and its temperature rises. The impurities in the cooling water precipitate and form scale, which adheres to the inner wall of the channel. Scale deposition reduces the cross-sectional area of ​​the channel, increases the resistance to water circulation, reduces the channel's heat exchange capacity, and worsens the cooling effect of the cooling device, resulting in significant deficiencies. Utility Model Content

[0004] In order to reduce the formation of scale in the induction coil water channel and improve the cooling effect of the cooling device, this application provides a cooling device for a medium-frequency induction furnace.

[0005] The cooling device for a medium-frequency induction furnace provided in this application adopts the following technical solution: A cooling device for a medium-frequency induction furnace includes a water tank, a water inlet pipe, a return water pipe and an outlet water pipe connected to the induction coil water channel, an outlet water plate connected to the return water pipe and the water inlet pipe inside the water tank, a plurality of branch water pipes connected to the outlet water plate, an installation plate inside the water tank, a filter cylinder corresponding to each of the plurality of branch water pipes on the installation plate, a filter assembly for filtering cooling water inside the filter cylinder, and the outlet of each branch water pipe facing the opening of the filter cylinder.

[0006] By adopting the above technical solution, when the cooling device is started, the cooling water flows to the outlet plate through the water inlet pipe and the water return pipe. The outlet plate distributes the cooling water to each water distribution pipe. The cooling water flows to the filter cartridge through the water distribution pipe. At this time, the filter component filters the impurities in the cooling water, reducing the content of scale-causing impurities in the cooling water. The purified cooling water is finally transported to the induction coil water channel of the medium frequency induction furnace through the outlet pipe. When the cooling water absorbs heat, the content of scale-causing impurities is reduced, thereby reducing the probability of scale formation, which in turn reduces the scale content in the induction coil water channel and improves the cooling effect of the cooling device.

[0007] Optionally, the filter cartridge may be provided with an activated carbon layer, an ion exchange resin layer and a filter cotton layer in sequence along the cooling water flow direction.

[0008] By adopting the above technical solution, when cooling water flows through the filter assembly, the activated carbon layer adsorbs impurities such as colloidal particles in the cooling water. Subsequently, the ion exchange resin layer removes calcium and magnesium hardness ions that cause scale formation in the cooling water through ion exchange. Finally, the filter cotton layer intercepts any potentially leaking activated carbon and resin particles. This achieves multiple filtration of impurities in the cooling water, reducing the content of scale-causing impurities entering the induction coil water channel and lowering the probability of scale formation.

[0009] Optionally, the mounting plate has placement slots corresponding to the plurality of filter cartridges one by one, and the filter cartridges are inserted into the corresponding placement slots. The water tank has a mounting slot that slides with the mounting plate. A fixing plate is provided at the end of the mounting plate near the opening of the mounting slot. The fixing plate is fixed to the outer wall of the water tank by a fixing component.

[0010] By adopting the above technical solution, when the filtration effect decreases due to filtration saturation, the worker cancels the fixing function of the fixing component, and then pulls the fixing plate to slide the mounting plate out of the mounting groove. At this time, multiple filter cartridges are placed outside the water tank. The worker pulls the filter cartridge with the saturated filtration component out of the placement groove, places the new filter cartridge in the placement groove, and after the replacement is completed, pushes the mounting plate into the water tank and uses the fixing component to fix the fixing plate. In this way, the saturated filtration component can be replaced individually, ensuring the filtration effect of the filtration component.

[0011] Optionally, the fixing assembly includes two opposing pin plates. The fixing plate has a sliding groove that slides with the pin plate. The outer surface of the water tank is provided with a plug sleeve that plugs with the pin plate. A retaining spring is provided in the sliding groove. The elastic force of the retaining spring drives the pin plate to insert into the plug sleeve. A rotating handle is rotatably connected to the fixing plate. A connecting rope corresponding to each of the two pin plates is wound on the rotating handle. The free end of the connecting rope is disposed on the corresponding pin plate.

[0012] By adopting the above technical solution, the worker rotates the handle to rewind the connecting rope. The connecting rope overcomes the elastic force of the retaining spring and pulls the pin plate away from the plug sleeve. At this time, the fixing effect between the fixing plate and the water tank disappears, and the mounting plate can slide along the mounting groove. After the mounting plate is pushed into the water tank, the worker releases the handle, the retaining spring resets, and pushes the plug plate into the pin sleeve. This makes the fixing plate and the water tank firmly connected, reducing the possibility of the mounting plate being displaced due to water flow impact, thereby ensuring that the cooling water flows through the water distribution pipe to the filter cartridge for filtration.

[0013] Optionally, a sealing ring is provided on the end face of the fixing plate facing the water tank, and a sealing groove is provided on the water tank to be inserted and matched with the sealing ring.

[0014] By adopting the above technical solution, after the mounting plate is pushed into the water tank, the sealing ring on the fixing plate is inserted into the sealing groove, thus sealing the gap between the fixing plate and the mounting groove, reducing the possibility of external impurities entering the water tank through the gap and contaminating the cooling water.

[0015] Optionally, a guide groove is provided on the inner side wall of the placement groove, and a guide block is provided on the filter cylinder that slides with the guide groove. Multiple adjustment components are provided in the mounting plate. The adjustment components drive the filter cylinders located in the same row to rise and fall along the placement groove. When the adjustment components drive the guide block to move to the top of the guide groove, the outlet of the water distribution pipe extends into the interior of the filter cylinder.

[0016] By adopting the above technical solution, when the filter assembly needs maintenance or replacement, the filter cylinder is lowered by adjusting the assembly, so that the outlet of the water distribution pipe is separated from the filter cylinder, making it convenient for workers to quickly pull out the filter cylinder. When the cooling device is running normally, the adjusting assembly drives the guide block to move to the top of the guide groove, so that the outlet of the water distribution pipe extends into the inside of the filter cylinder. At this time, the cooling water is directly transported from the water distribution pipe into the inside of the filter cylinder, reducing the overflow or splashing of the cooling water during the transportation process, preventing unfiltered cooling water from directly entering the water tank for circulation, and ensuring that all cooling water can flow through the filter assembly for purification.

[0017] Optionally, the mounting plate has a drive groove communicating with the guide grooves located in the same column. The drive groove is perpendicular to the guide groove. The adjustment component includes a screw rotatably connected in the drive groove. The screw is threaded with a drive block that corresponds one-to-one with a plurality of guide blocks in the same column. The drive block is provided with a pushing inclined surface. The bottom of the guide block is provided with a pushed inclined surface that slides with the pushing inclined surface. The pushing inclined surface and the pushed inclined surface have the same inclination direction. The end of the screw extends to the outer surface of the fixing plate and is provided with a handle.

[0018] By adopting the above technical solution, when the screw rotates, the screw drives multiple drive blocks to move along the drive groove. The pushing inclined surface of the drive block slides in cooperation with the pushed inclined surface at the bottom of the guide block. Since the two inclined surfaces are in the same direction, the horizontal movement of the drive block is converted into the vertical lifting and lowering of the guide block along the guide groove, which in turn drives multiple filter cartridges in the same row to lift and lower synchronously along the mounting groove, ensuring the consistency and stability of the filter cartridges during the lifting and lowering process, and avoiding the misalignment of the water outlet of the water distribution pipe and the filter cartridge caused by the displacement of a single filter cartridge.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. This application sets up multiple filter components to filter impurities in the cooling water, reducing the content of scale-causing impurities in the cooling water, thereby reducing the probability of scale precipitation in the cooling water after heat absorption, reducing the scale content in the induction coil water channel, and improving the cooling effect of the cooling device. 2. By setting a fixing component and a fixing plate, this application eliminates the fixing function of the fixing component, allowing the mounting plate to move along the water tank, thereby facilitating the transfer of the filter cartridge to the outside of the water tank for replacement and ensuring the filtration effect of the filter component; 3. By setting up a lifting component, when the cooling device is running normally, the adjusting component drives the guide block to move to the top of the guide groove, so that the outlet of the water distribution pipe extends into the inside of the filter cylinder. At this time, the cooling water is directly transported from the water distribution pipe into the inside of the filter cylinder, reducing the overflow or splashing of the cooling water during the transportation process, preventing unfiltered cooling water from directly entering the water tank for circulation, and ensuring that all cooling water can flow through the filter component for purification. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this application.

[0021] Figure 2 This is a cross-sectional view of the filter cartridge in an embodiment of this application.

[0022] Figure 3 This is a cross-sectional view of the fixing plate in an embodiment of this application.

[0023] Figure 4 This is a cross-sectional view of the mounting plate in an embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Water tank; 101. Water inlet pipe; 102. Water return pipe; 103. Water outlet pipe; 104. Mounting groove; 105. Sealing groove; 2. Water outlet tray; 21. Water distribution pipe; 3. Mounting plate; 31. Placement groove; 32. Fixing plate; 321. Sealing ring; 322. Sliding groove; 33. Guide groove; 34. Drive groove; 4. Filter cartridge; 41. Guide block; 5. Filter assembly; 51. Activated carbon layer; 52. Ion exchange resin layer; 53. Filter cotton layer; 6. Fixing assembly; 61. Pin plate; 62. Insert sleeve; 63. Clamping spring; 64. Rotary handle; 65. Connecting rope; 7. Adjusting assembly; 71. Screw; 72. Drive block; 73. Handle. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] This application discloses a cooling device for a medium-frequency induction furnace.

[0027] Reference Figure 1 and Figure 2 A cooling device for a medium-frequency induction furnace includes a water tank 1. A water inlet pipe 101 and a water return pipe 102 are connected to the top of the water tank 1, and a water outlet pipe 103 is connected to the bottom. The water inlet pipe 101 is connected to a cooling water source to replenish the cooling water. The water return pipe 102 and the water outlet pipe 103 are connected to the induction coil water channel through a circulation pipe to cool the induction coil. The water tank 1 is equipped with a refrigeration element for providing a low-temperature environment, which is prior art and will not be described in detail in this embodiment.

[0028] Reference Figure 1 and Figure 2 The water tank 1 is equipped with a water outlet plate 2. The water inlet pipe 101 and the return pipe 102 extend into the water tank 1 and are connected to the water outlet plate 2. Multiple water distribution pipes 21 are connected and installed on the water outlet plate 2. The water tank 1 is equipped with an installation plate 3. Each installation plate 3 has a filter cylinder 4 arranged in an array, corresponding to the multiple water distribution pipes 21. In this embodiment, there are nine filter cylinders 4, which are arranged in a 3*3 array. The filter cylinder 4 is equipped with a filter assembly 5. Specifically, the filter assembly 5 includes an activated carbon layer 51, an ion exchange resin layer 52 and a filter cotton layer 53 arranged sequentially along the cooling water flow direction.

[0029] When the cooling device is started, the cooling water entering the water tank 1 through the water inlet pipe 101 or the water return pipe 102 flows to the water outlet plate 2. The water outlet plate 2 distributes the cooling water to each water distribution pipe 21. The cooling water flows to the filter cartridge 4 through the water distribution pipe 21. When flowing through the filter assembly 5, the activated carbon layer 51 adsorbs impurities such as colloidal particles in the cooling water. The ion exchange resin layer 52 removes calcium and magnesium hardness ions that cause scale formation in the cooling water through ion exchange. Finally, the filter cotton layer 53 intercepts any possible leaking activated carbon particles and resin particles. The content of scale-causing impurities in the filtered cooling water is reduced. Then, the cooling water flows out of the filter cartridge 4 and is finally transported to the induction coil water channel of the medium frequency induction furnace through the water outlet pipe 103. When the cooling water absorbs heat, the content of scale-causing impurities is reduced, thereby reducing the probability of scale formation and thus reducing the scale content in the induction coil water channel, improving the cooling effect of the cooling device.

[0030] Reference Figure 1 , Figure 2 and Figure 3 As the filter component 5 is used for a longer period of time, the filter component 5 will become saturated and the filtration effect will decrease, thus failing to effectively remove scale-causing impurities in the cooling water.

[0031] Reference Figure 1 , Figure 2 and Figure 3 To solve the above technical problems, the upper surface of the mounting plate 3 is provided with placement slots 31 corresponding to multiple filter cartridges 4. The filter cartridges 4 are inserted into the corresponding placement slots 31. The cross-section of the placement slots 31 is T-shaped to prevent the filter cartridges 4 from falling out of the placement slots 31. The water tank 1 is provided with a mounting slot 104 that slides with the mounting plate 3. A fixing plate 32 is fixedly connected to the end of the mounting plate 3 near the opening of the mounting slot 104. The cross-sectional area of ​​the fixing plate 32 is larger than that of the mounting plate 3. A sealing ring 321 is fixedly connected to the end face of the fixing plate 32 facing the water tank 1. A sealing groove 105 is provided on the water tank 1 that inserts and cooperates with the sealing ring 321. Through the insertion and cooperation of the sealing ring 321 and the sealing groove 105, the gap between the fixing plate 32 and the mounting slot 104 is sealed, reducing the possibility of external impurities entering the water tank 1 through the gap and contaminating the cooling water.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The fixing plate 32 is fixed to the outer surface of the water tank 1 by the fixing component 6. Specifically, the fixing component 6 includes two pin plates 61 arranged opposite to each other. The fixing plate 32 has a sliding groove 322 that slides with the pin plate 61. The outer surface of the water tank 1 is fixedly connected to a plug sleeve 62 that plugs into the pin plate 61. The two plug sleeves 62 are respectively distributed on the opposite sides of the opening of the mounting groove 104.

[0033] Reference Figure 1 , Figure 2 and Figure 3 Each sliding groove 322 is equipped with a retaining spring 63. One end of the retaining spring 63 is fixedly connected to the inner side wall of the sliding groove 322 away from the plug sleeve 62, and the other end is fixedly connected to the plug plate 61. The elastic force of the retaining spring 63 drives the plug plate 61 to insert into the plug sleeve 62. A rotating handle 64 is rotatably connected to the center of the mounting plate 3. A connecting rope 65 corresponding to the two plug plates 61 is wound on the rotating handle 64. The free end of the connecting rope 65 extends into the sliding groove 322 and is fixedly installed on the corresponding plug plate 61.

[0034] When the filtration effect of the filter assembly 5 decreases due to filtration saturation, the worker turns the handle 64 to make the connecting rope 65 wind up. The connecting rope 65 overcomes the elastic force of the clamping spring 63 and pulls the pin plate 61 to disengage from the plug sleeve 62. At this time, the fixing effect between the fixing plate 32 and the water tank 1 disappears. The worker pulls the fixing plate 32 to drive the mounting plate 3 to slide out of the mounting groove 104. Multiple filter cylinders 4 are placed outside the water tank 1. The worker pulls the filter cylinder 4 with the saturated filter assembly 5 out of the placement groove 31 and places the new filter cylinder 4 in the placement groove 31. After the filter cartridge 4 is replaced, the worker first rotates the handle 64 to keep the pin plate 61 disengaged from the insertion sleeve 62. Then, the mounting plate 3 is pushed into the water tank 1. When the sealing ring 321 on the fixing plate 32 is inserted into the sealing groove 105, the worker releases the handle 64, presses the spring 63 to reset, and pushes the insertion plate into the pin sleeve. This makes the fixing plate 32 firmly connected to the water tank 1, thus realizing the single replacement of the saturated filter assembly 5 and ensuring the filtration effect of the filter assembly 5.

[0035] Reference Figure 2 and Figure 4 The outer diameter of the water distribution pipe 21 is smaller than the inner diameter of the filter cylinder 4. The mounting plate 3 is provided with multiple adjustment components 7. In this embodiment, there are three adjustment components 7. The adjustment components 7 drive the filter cylinders 4 located in the same row to rise and fall along the placement groove 31. After the fixing plate 32 is fixed to the water tank 1, the worker drives multiple filter cylinders 4 to rise synchronously along the placement groove 31 through the three adjustment components 7, so that the outlet of the water distribution pipe 21 extends into the interior of the filter cylinder 4. At this time, the cooling water is directly transported from the water distribution pipe 21 into the interior of the filter cylinder 4, reducing the overflow or splashing of the cooling water during the transportation process.

[0036] Reference Figure 2 and Figure 4 The inner wall of the placement groove 31 is provided with a guide groove 33, which is set vertically. The outer surface of the filter cylinder 4 is fixedly connected with a guide block 41 that slides with the guide groove 33. When the guide block 41 stops at the bottom of the guide groove 33, the water distribution pipe 21 separates from the filter cylinder 4, making it convenient for workers to quickly pull out the installation plate 3.

[0037] Reference Figure 2 and Figure 4 The mounting plate 3 has a drive groove 34 that communicates with the guide groove 33 in the same column. The drive groove 34 is perpendicular to the guide groove 33. The adjustment assembly 7 includes a screw 71 that is rotatably connected in the drive groove 34. The screw 71 is threaded with a drive block 72 that corresponds one-to-one with a plurality of guide blocks 41 in the same column.

[0038] Reference Figure 2 and Figure 4 The drive block 72 is provided with a pushing inclined surface (not shown in the figure), and the bottom of the guide block 41 is provided with a pushed inclined surface (not shown in the figure) that slides with the pushing inclined surface. The pushing inclined surface and the pushed inclined surface are inclined in the same direction and are both inclined from top to bottom along the direction close to the guide groove 33. The end of the screw 71 extends to the outer surface of the fixing plate 32 and is coaxially fixedly connected to the handle 73.

[0039] During the adjustment process, the worker rotates the screw 71 forward or backward by using the handle 73. The rotation of the screw 71 drives multiple drive blocks 72 to move linearly along the drive groove 34. During the movement of the drive blocks 72, the horizontal movement of the drive blocks 72 is converted into the vertical lifting and lowering of the guide blocks 41 along the guide groove 33 through the sliding cooperation between the pushing inclined surface and the pushed inclined surface. This, in turn, drives multiple filter cartridges 4 in the same row to lift and lower synchronously along the mounting groove 104, thereby realizing the docking and separation of the filter cartridges 4 and the corresponding water distribution pipes 21.

[0040] The implementation principle of a cooling device for a medium-frequency induction furnace according to an embodiment of this application is as follows: When the cooling device is started, the cooling water entering the water tank 1 through the water inlet pipe 101 or the water return pipe 102 flows to the water outlet plate 2. The water outlet plate 2 distributes the cooling water to each water distribution pipe 21. The cooling water flows to the filter cylinder 4 through the water distribution pipe 21. When flowing through the filter assembly 5, the activated carbon layer 51 adsorbs impurities such as colloidal particles in the cooling water. The ion exchange resin layer 52 removes calcium and magnesium hardness ions that cause scale formation in the cooling water through ion exchange. Finally, the filter cotton layer 53 intercepts any possible leaking activated carbon particles and resin particles. The content of scale-causing impurities in the filtered cooling water is reduced. Then, the cooling water flows out of the filter cylinder 4 and is finally transported to the induction coil water channel of the medium-frequency induction furnace through the water outlet pipe 103. When the cooling water absorbs heat, the content of scale-causing impurities is reduced, thereby reducing the probability of scale formation and thus reducing the scale content in the induction coil water channel, improving the cooling effect of the cooling device.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cooling device for a medium-frequency induction furnace, comprising a water tank (1), wherein a water inlet pipe (101) is provided on the water tank (1), and a water return pipe (102) and a water outlet pipe (103) connected to the water channel of the induction coil are provided on the water tank (1), characterized in that, The water tank (1) is provided with a water outlet plate (2) that communicates with the return water pipe (102) and the water inlet pipe (101). The water outlet plate (2) is connected to multiple water distribution pipes (21). The water tank (1) is provided with an installation plate (3). The installation plate (3) is provided with filter cylinders (4) that correspond one-to-one with the multiple water distribution pipes (21). The filter cylinders (4) are provided with filter components (5) for filtering cooling water. The outlet of each water distribution pipe (21) is oriented towards the filter cylinder (4). The installation plate (3) is provided with placement slots (31) that correspond one-to-one with the multiple filter cylinders (4). The filter cylinders (4) are inserted into the corresponding placement slots (31). The water tank (1) is provided with an installation slot (104) that slides with the installation plate (3). The installation plate (3) is close to the installation slot (104). A fixing plate (32) is provided at the end of the opening. The fixing plate (32) is fixed to the outer wall of the water tank (1) by a fixing component (6). The fixing component (6) includes two pin plates (61) arranged opposite to each other. A sliding groove (322) is provided in the fixing plate (32) to slide with the pin plate (61). A plug sleeve (62) is provided on the outer surface of the water tank (1) to plug with the pin plate (61). A retaining spring (63) is provided in the sliding groove (322). The elastic force of the retaining spring (63) drives the pin plate (61) to insert into the plug sleeve (62). A rotating handle (64) is rotatably connected to the fixing plate (32). A connecting rope (65) corresponding to the two pin plates (61) is wound on the rotating handle (64). The free end of the connecting rope (65) is provided on the corresponding pin plate (61).

2. The cooling device for a medium-frequency induction furnace according to claim 1, characterized in that, The filter cylinder (4) is provided with an activated carbon layer (51), an ion exchange resin layer (52), and a filter cotton layer (53) in sequence along the direction of cooling water flow.

3. A cooling device for a medium-frequency induction furnace according to claim 1, characterized in that, The fixing plate (32) is provided with a sealing ring (321) on the end face facing the water tank (1), and the water tank (1) is provided with a sealing groove (105) that is inserted and matched with the sealing ring (321).

4. A cooling device for a medium-frequency induction furnace according to claim 1, characterized in that, The inner wall of the placement groove (31) is provided with a guide groove (33), and the filter cylinder (4) is provided with a guide block (41) that slides with the guide groove (33). The mounting plate (3) is provided with a plurality of adjustment components (7). The adjustment components (7) drive the filter cylinders (4) located in the same row to rise and fall along the placement groove (31). When the adjustment components (7) drive the guide block (41) to move to the top of the guide groove (33), the outlet of the water distribution pipe (21) extends into the interior of the filter cylinder (4).

5. A cooling device for a medium-frequency induction furnace according to claim 4, characterized in that, The mounting plate (3) has a drive groove (34) that communicates with the guide groove (33) located in the same column. The drive groove (34) is perpendicular to the guide groove (33). The adjustment component (7) includes a screw (71) rotatably connected in the drive groove (34). The screw (71) is threaded with a drive block (72) that corresponds one-to-one with a plurality of guide blocks (41) in the same column. The drive block (72) is provided with a pushing inclined surface. The bottom of the guide block (41) is provided with a pushed inclined surface that slides with the pushing inclined surface. The pushing inclined surface and the pushed inclined surface have the same inclination direction. The end of the screw (71) extends to the outer surface of the fixing plate (32) and is provided with a handle (73).

Images