Vertical buried electrode device of deep well type salt bath furnace
By designing a vertical buried electrode device in a deep-well salt bath furnace, the electrode blocks are inserted into the refractory brick and extending along the furnace wall, the problems of uneven salt liquid temperature and uneven heat treatment of the workpiece are solved, and more efficient heating and more uniform temperature control are achieved.
Patent Information
- Application Number
- CN202422133970.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In deep-well salt bath furnace, since the electrode block is buried near the bottom of the furnace, the heat transfer efficiency is reduced, the salt molten time is long, and the salt liquid temperature is uneven, which leads to uneven heating of the workpiece and low accuracy, and even scrapping of the workpiece, increasing production costs.
A deep-well salt bath furnace vertical buried electrode device is designed, one end of the electrode block is inserted into the refractory brick, and a certain gap is left between it and the refractory brick to allow the electrode block to expand freely under high temperature state. The electrode block extends upward along the furnace wall and provides support through the electrode load-bearing support block to ensure the electrode is stable and prevent tilt.
Through this design, the time of molten salt liquid is shortened, the uniformity of the salt liquid temperature is improved, the workpiece is heated evenly, the heating efficiency and temperature control accuracy are improved, and the production cost is reduced.
Smart Images
Figure CN223036900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat treatment, and specifically relates to a vertical buried electrode device for a deep-well salt bath furnace. Background Technique
[0002] A salt bath furnace is an industrial furnace that uses molten salt liquid as a heating medium and immerses workpieces in the salt liquid for heating. The salt bath furnace can be heated through metal electrodes in the salt liquid. The salt bath furnace needs to ensure a uniform temperature distribution of the salt liquid, so as to ensure that the workpieces are subjected to consistent heat treatment during the entire heating process. In the existing salt bath furnaces, the electrode blocks are generally buried on the furnace wall near the bottom of the furnace chamber. However, in a deep-well salt bath furnace with a relatively deep furnace chamber, due to the fact that the electrode blocks are buried close to the bottom of the furnace chamber, during the heat treatment process, the heat transfer efficiency is reduced, the molten salt time is long, and a large amount of energy is lost during the heat transfer process, resulting in low energy utilization rate; the temperature of the salt liquid is uneven, which in turn leads to uneven heating of the workpieces, low workpiece accuracy, and even workpiece scrapping, increasing production costs. Content of the Utility Model
[0003] The utility model provides a vertical buried electrode device for a deep-well salt bath furnace, which can solve the problems of long molten salt liquid time, uneven salt liquid temperature, and uneven heating of workpieces.
[0004] The present application provides the following technical solutions:
[0005] A vertical buried electrode device for a deep-well salt bath furnace, including a furnace body. A furnace chamber is arranged inside the furnace body. It is characterized in that refractory bricks are arranged at the bottom of the furnace chamber, electrode blocks are buried on the furnace wall, one end of the electrode block is inserted into the refractory bricks, and there is a certain gap between the end of the electrode block and the refractory bricks. The other end of the electrode block extends upward along the furnace wall. The electrode block is fixedly connected with an electrode lead-out rod, and the electrode lead-out rod is supported on an electrode load-bearing support block, and the electrode load-bearing support block is buried in the furnace body near the electrode block.
[0006] Beneficial effects: One end of the electrode block is inserted into the refractory bricks, and there is a certain gap between the electrode block and the refractory bricks, leaving enough space for the free expansion of the electrode block at high temperature. The electrode block extends upward along the furnace wall, ensuring that the electrode block has a certain length in the furnace chamber, ensuring the molten salt bath, and effectively shortening the melting time. The entire electrode is supported by the electrode load-bearing support block, and the refractory bricks at the bottom of the furnace chamber are fixedly connected with the electrode block, ensuring that the entire electrode is not only firmly supported but also effectively preventing the electrode from tilting. It solves the problems of long molten salt liquid time, uneven salt liquid temperature, and uneven heating of workpieces in a deep-well salt bath furnace.
[0007] Further, three electrode blocks are buried on the furnace wall, and the three electrode blocks are respectively connected to three electrode handles located above the furnace body through electrode lead-out rods.
[0008] Beneficial effects: The three electrode blocks contribute to achieving uniform heating of the salt solution, ensuring uniform heating of the workpiece, maintaining the stability of the salt bath temperature, and reducing temperature fluctuations.
[0009] Furthermore, the three electrode blocks are distributed in an isosceles triangle on the furnace wall.
[0010] Beneficial effects: Ensure that each wall surface of the furnace is within the temperature transfer range of the electrode blocks, achieving uniform heat distribution in the salt solution.
[0011] Furthermore, a cooling device is provided near the power connection end of the electrode handle.
[0012] Beneficial effects: The temperature of the electrode handle is reduced by the cooling device, ensuring the stability of the electrode handle at high temperatures and improving the safety of operation.
[0013] Furthermore, the electrode blocks are vertically buried in the furnace wall, and the length of the electrode blocks in the vertical direction is less than the depth of the furnace and greater than half of the depth of the furnace.
[0014] Beneficial effects: It improves the heating efficiency and temperature control accuracy of the salt bath furnace, also improves the uniformity of heating, and improves the production efficiency.
[0015] Furthermore, the electrode bearing support block is made of high-alumina brick.
[0016] Beneficial effects: High-alumina brick has excellent high-temperature resistance and can withstand the high-temperature environment during the operation of the salt bath furnace. It improves the structural stability and service life of the salt bath furnace, thereby improving the production efficiency and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of the first embodiment of a vertical electrode device for a deep-well salt bath furnace of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following is further detailed through specific embodiments:
[0019] The marks in the attached drawings of the specification include: furnace body 1, furnace chamber 2, electrode block 3, refractory brick 4, gap 5, electrode lead-out rod 6, electrode bearing support block 7, electrode handle 8, cooling device 9.
[0020] Embodiment 1
[0021] As Figure 1As shown in the figure, a vertical buried electrode device for a deep-well salt bath furnace includes a furnace body 1. Inside the furnace body 1, there is a hearth 2. At the bottom of the hearth 2, there is a refractory brick 4. Vertically buried on the wall of the hearth 2 are electrode blocks 3. One end of the electrode block 3 is inserted into the refractory brick 4, and there is a certain gap 5 between the end of the electrode block 3 and the refractory brick 4, leaving an expansion gap 5 for the free expansion of the electrode block 3 at high temperatures. The electrode block 3 can be clamped and fixed in the refractory brick 4, or the electrode block 3 and the refractory brick 4 are fixedly connected by cement. The other end of the electrode block 3 extends vertically upward along the wall of the hearth 2. The electrode block 3 is fixedly connected to an electrode lead rod 6. One end of the electrode lead rod 6 is inserted into the inner wall of the furnace body 1 and fixedly connected to the electrode block 3 by welding. The other end of the electrode lead rod 6 is fixedly connected to an electrode handle 8 located above the furnace body 1 by welding. The electrode lead rod 6 does not contact the hearth 2. The electrode lead rod 6 is supported on an electrode load-bearing support block 7. The electrode load-bearing support block 7 is buried in the furnace body 1 near the electrode block 3, and the electrode load-bearing support block 7 is made of high-alumina brick.
[0022] Three electrode blocks 3 are buried on the wall of the hearth 2. The three electrode blocks 3 are distributed in an isosceles triangle on the wall of the hearth 2. The inner side wall surface of the electrode block 3 contacts the molten salt liquid in the hearth 2, the side wall surface opposite to the inner side wall surface contacts the electrode load-bearing support block 7, and the remaining wall surfaces are respectively in close contact with the furnace body 1. The three electrode blocks 3 are respectively connected to three electrode handles 8 located above the furnace body 1 through electrode lead rods 6. The three electrode handles 8 are distributed in an isosceles triangle above the furnace body 1. A cooling device 9 is provided near the power connection end of each electrode handle 8. The cooling device 9 includes a water-cooled sleeve sleeved on the electrode handle 8 to cool the electrode handle 8.
[0023] The usage method is as follows: Using molten salt liquid as the heating medium, turn on the power of the electrode block 3, heat the molten salt liquid through the electrode block 3, and immerse the workpiece in the molten salt liquid for heating. During the production process, the entire electrode is supported by the electrode load-bearing support block 7, and the electrode block 3 is fixedly connected to the refractory brick 4 at the bottom of the hearth 2, ensuring that the entire electrode is not only firmly supported but also effectively preventing the electrode from tilting and allowing the free expansion of the electrode block 3 at high temperatures. It solves the problems of long time of molten salt liquid in the deep-well salt bath furnace, uneven temperature of the salt liquid, and uneven heating of the workpiece.
[0024] Embodiment 2
[0025] The difference between this embodiment and Embodiment 1 is that there is a refractory brick 4 between the inner wall of the furnace body 1 and the hearth 2. The electrode block 3 and the electrode load-bearing support block 7 can both be buried on the wall of the hearth 2 through the refractory brick 4, and the electrode block 3 and the electrode load-bearing support block 7 are fixedly connected to the refractory brick 4 by cement.
[0026] Embodiment 3
[0027] The difference between this embodiment and the first embodiment is that the electrode block 3 is vertically buried in the wall of the furnace chamber 2, and the length of the electrode block 3 in the vertical direction is less than the depth of the wall of the furnace chamber 2 and greater than half of the depth of the wall of the furnace chamber 2.
[0028] The above are only the embodiments of the present invention. The present invention is not limited to the fields involved in this embodiment. Common knowledge such as the specific structures and characteristics known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.
Claims
1. A deep well salt bath furnace vertically buried electrode device, comprising a furnace body, wherein a furnace chamber is provided inside the furnace body, characterized in that: Refractory bricks are provided at the bottom of the furnace, and an electrode block is buried on the furnace wall. One end of the electrode block is inserted into the refractory brick, and a certain gap is left between the end of the electrode block and the refractory brick. The other end of the electrode block extends upward along the furnace wall. The electrode block is fixedly connected to the electrode lead-out rod, and the electrode lead-out rod is supported on the electrode load-bearing support block. The electrode load-bearing support block is buried in the furnace body near the electrode block.
2. A deep well salt bath furnace vertically buried electrode device according to claim 1, characterized in that: Three electrode blocks are embedded in the furnace wall, and the three electrode blocks are respectively connected to three electrode handles located above the furnace body through electrode lead-out rods.
3. A deep well salt bath furnace vertically buried electrode device according to claim 2, characterized in that: The three electrode blocks are distributed on the furnace wall in the form of an isosceles triangle.
4. A deep well salt bath furnace vertically buried electrode device according to claim 3, characterized in that: The electrode handle is provided with a cooling device near the power connection end.
5. A deep well salt bath furnace vertically buried electrode device according to claim 4, characterized in that: The electrode block is vertically buried on the furnace wall, and the length of the electrode block in the vertical direction is less than the depth of the furnace and greater than half of the depth of the furnace.
6. A deep well salt bath furnace vertically buried electrode device according to claim 5, characterized in that: The electrode load-bearing support block is made of high-aluminum bricks.