Intermediate frequency furnace device for casting

Abstract

An intermediate frequency furnace device for casting comprises a furnace body arranged on a supporting table and a furnace cover arranged on the furnace body in a covering mode, a feeding port and a discharging port are formed in the two sides of the top of the furnace body in the circumferential direction respectively, and a pair of electrodes which can be inserted into the furnace body and are used for dissolving materials in the furnace body is arranged on the furnace cover. The supporting table is used for containing the furnace body and abuts against the bottom of the furnace body, the end face, corresponding to the furnace body, of the supporting table is in an arc shape, and the bottom of the furnace body is symmetrically arranged in the circumferential direction, corresponds to the feeding port and the discharging port and is used for containing finished product materials, and the telescopic cylinder is used for making the furnace body topple over. The telescopic cylinder comprises a cylinder body embedded in the supporting table and a telescopic rod extending out of the cylinder body and hinged to the furnace body, and a stabilizing assembly used for preventing the cylinder body from disengaging from the supporting table is further arranged in the supporting table. The utility model has the beneficial effects that the symmetrically arranged material barrels and telescopic cylinders form moment balance, so that the influence of dumping action on the stability of the furnace body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a metal processing equipment especially cast with intermediate frequency furnace device. BACKGROUND

[0002] Intermediate frequency furnace is a kind of equipment widely used in the field such as metal smelting, casting, its main function is to heat metal material to melting state by electromagnetic induction. In actual use process, intermediate frequency furnace usually needs to pour out the molten metal liquid from the furnace body to carry out subsequent casting or processing. Pouring process is generally realized by mechanical transmission device or hydraulic system, and the operator needs to control the inclination angle of furnace body to make high-temperature metal liquid flow out smoothly. However, in some application scenarios, due to the large volume of furnace body or the heavy weight of internal metal liquid, the stability and operation precision of equipment are required higher in pouring process, especially in the case of improper pouring speed and angle control, metal liquid is easy to splash or other safety hazards.

[0003] In the prior art, intermediate frequency furnace has the problem of insufficient stability when pouring internal materials. Specifically, the traditional pouring mechanism lacks sufficient support and balance adjustment ability in design, which causes the furnace body to shake or deviate during tilting. This instability not only affects the accuracy of pouring, but also may cause metal liquid overflow or equipment damage and other problems. In addition, due to the high temperature and weight distribution change generated in the pouring process, the durability and safety of the equipment are also challenged, thereby increasing the maintenance cost and operation risk. Therefore, how to improve the stability of intermediate frequency furnace in pouring process has become a technical problem to be solved. TECHNICAL SOLUTION

[0004] In view of the deficiencies of the prior art, the utility model provides a cast intermediate frequency furnace device more stable when pouring.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows: a cast intermediate frequency furnace device, comprising a furnace body provided on a support table and a furnace cover provided on the furnace body, the top of the furnace body is provided with a feed inlet and a discharge outlet on the two sides of the circumference respectively, a pair of electrodes for dissolving the internal materials of the furnace body is arranged on the furnace cover and can be inserted into the furnace body, the support table is used for placing the furnace body and abutting against the bottom of the furnace body, the end faces of the support table and the furnace body corresponding to each other are arc-shaped, the bottom of the furnace body is symmetrically provided along the circumference and is respectively corresponding to the material barrel for containing finished material and the telescopic cylinder for causing the furnace body to pour out, the telescopic cylinder comprises a cylinder body embedded in the support table and a telescopic rod extending from the cylinder body and hinged with the furnace body, and the support table is further provided with a stabilizing assembly for preventing the cylinder body from falling out of the support table.

[0006] The utility model discloses beneficial effect is: through the support platform of arc end surface and furnace body cooperation, can effectively disperse the contact stress of pouring, avoid the abrasion caused by local stress concentration, the force moment balance is formed to the material bucket of symmetrical setting and telescopic cylinder, reduces the influence of dumping action to the stability of furnace body, the stable component can pass through the counter torque and offset the pull of telescopic cylinder, for example, the limiting guide rail of angle with cylinder body axis is set up in the inside support platform, can pass through the counter friction of guide rail side wall and the contact surface of cylinder body, or adopts the wedge-shaped block with inclination and inserts the clearance between cylinder body and support platform, utilizes the anti -unhooking of inclined plane self -locking principle realizes. As a preferred mode, the arc-shaped end surface of support platform and furnace body contact can set up the recess and convex structure of staggered distribution, through recess and convex occlusion increase the friction coefficient, allow certain range's fine adjustment displacement simultaneously, give consideration to stability and the flexibility of dumping action.

[0007] Further, the cylinder body and the telescopic rod have an outer diameter difference, the support platform includes an anti-unhooking boss axially distributed from the outer edge of the cylinder body towards the center of the cylinder body, and the stable component is arranged between the anti-unhooking boss and the cylinder body.

[0008] The stepped matching surface formed by the outer diameter difference allows the anti-unhooking boss to bear axial load when the telescopic cylinder is pulled, avoiding stress concentration at a single connection point. The axial extension design of the anti-unhooking boss can increase the contact area with the cylinder body, for example, an annular boss is used to wrap the outer periphery of the cylinder body, and the load is uniformly transmitted through the annular support surface; or a plurality of groups of radial boss arrays are arranged to reduce the material usage while ensuring strength. As a preferred mode, the anti-unhooking boss can be designed as a tapered structure, and the inner wall and the outer wall of the cylinder body form a wedge-shaped matching, which generates a self-enhancing clamping force when the cylinder body is pulled and displaced, further inhibiting the tendency of unhooking.

[0009] Further, the stable component includes an adjusting rod screwed on the anti-unhooking boss, a fixed nut matched with the adjusting rod, and a spring abutting against one end of the cylinder body, the front end of the adjusting rod is provided with a positioning portion for positioning the other end of the spring, and at least part of the spring is located outside the positioning portion.

[0010] The component realizes accurate control of the pre-tightening force of the spring through thread adjustment, which can adapt to the anti-unhooking requirements under different working conditions. The exposed part of the spring can form an elastic buffer section, for example, a variable-pitch spring is used, the densely wound section close to the positioning portion provides initial pre-tightening force, and the sparsely wound section exposed outside allows a larger deformation to absorb impact load. As a preferred mode, the positioning portion can be provided with a multi-stage clamping groove structure, the effective working turns of the spring are changed by rotating the adjusting rod, thereby realizing stiffness adjustment without replacing the spring, and an elastic gasket is additionally arranged between the fixed nut and the anti-unhooking boss, which can compensate for the thread gap and prevent loosening.

[0011] Further, the material bucket is provided with a support plate near the side of the furnace body, and the support plate is abutted on the furnace body when the furnace body is inclined.

[0012] The support plate and the telescopic cylinder form a bidirectional support system, and a three-point force structure is established during pouring to significantly improve the posture stability of the furnace body. The contact surface of the support plate can be designed as a self-adaptive curved surface, for example, a multi-layer laminated structure, each lamella is connected through a hinged shaft, and the curvature radius can be automatically adjusted according to the inclination angle of the furnace body to ensure the surface contact effect. As a preferred mode, a pressure sensor array can be embedded in the support plate to monitor the contact pressure distribution in real time, and when the local pressure is detected to be excessive, the telescopic cylinder stroke is automatically adjusted through a linkage control system to realize dynamic balance during pouring.

[0013] Further, one end of the support plate is hinged on the material bucket, and an elastic telescopic member is arranged between the support plate and the material bucket to provide a torque of the support plate towards the furnace body.

[0014] The hinged structure allows the support plate to adapt to the change of the inclination angle of the furnace body, and the continuous torque generated by the elastic telescopic member can eliminate the support gap, for example, a pre-compressed nitrogen gas spring, the characteristic that the output force changes little with displacement can maintain a stable support force, or a double-acting hydraulic cylinder is arranged to cooperate with an accumulator to dynamically adjust the support force during pouring. As a preferred mode, the elastic telescopic member can be designed as a sleeve structure, which contains a main spring and an auxiliary spring group inside, the main spring provides a basic support force, and the auxiliary spring is intervened to work at a certain inclination angle through a slider mechanism, forming a segmented support characteristic, which takes into account the rapid response at the initial stage of pouring and the support demand of large load at the later stage. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a sectional view of the embodiment of the utility model;

[0016] Fig. 2 It is a partial enlarged view of the stable assembly of the embodiment of the utility model;

[0017] Fig. 3 It is a partial enlarged view of the material bucket of the embodiment of the utility model. DETAILED DESCRIPTION

[0018] The embodiment of the utility model discloses a medium-frequency furnace device for casting as shown in the drawing: Figs. 1-3 It comprises a support table 1 and a furnace body 2 arranged on the support table 1, and the top of the furnace body 2 is provided with an inlet 21 and an outlet 22 on the circumferential two sides respectively. The support table 1 is used for bearing the furnace body 2, and the end surface of the support table 1 in contact with the furnace body 2 is designed as an arc-shaped structure matched with each other, that is, an arc-shaped end surface 12. A furnace cover 3 is arranged on the top of the furnace body 2 and can be opened and closed, and a pair of electrodes 31 is vertically installed on the furnace cover 3, which can be inserted into the inside of the furnace body 2 to melt the material.

[0019] A material bucket 23 and a telescopic cylinder 24 are arranged circumferentially at the bottom of the furnace body 2, the material bucket 23 is arranged below the discharge port 22 for receiving finished material, and the telescopic cylinder 24 is arranged below the feeding port 21. The telescopic cylinder 24 comprises a cylinder body 241 embedded in the support table 1, and a telescopic rod 242 arranged in the cylinder body 241, the telescopic rod 242 is connected to the bottom of the furnace body 2 through a hinge at the end.

[0020] The support table 1 is provided with an annular anti-loosening boss 13 outside the cylinder body 241, and a stabilizing assembly 25 is arranged between the anti-loosening boss 13 and the cylinder body 241. The stabilizing assembly 25 comprises an adjusting rod 251 penetrating through the anti-loosening boss 13, the end of the adjusting rod 251 is locked by a fixing nut 252, and a positioning portion 254 is arranged at the front end of the adjusting rod 251, one end of a spring 253 abuts against the cylinder body 241, and the other end abuts against the inside of the positioning portion 254.

[0021] The material bucket 23 is hingedly connected with a support plate 231 near one side of the furnace body 2, and an elastic telescopic member 232 is arranged between the support plate 231 and the material bucket 23. When the furnace body 2 is tilted, the support plate 231 is kept in contact with the outer wall of the furnace body 2 by the pre-tightening force of the elastic telescopic member 232.

[0022] The working principle is as follows: during smelting, the electrode 31 is electrified to heat the material in the furnace, and after smelting, the telescopic cylinder 24 pushes the furnace body 2 to rotate around the arc-shaped end face 12 of the support table 1 to be tilted, and the molten material flows into the material bucket 23 through the discharge port 22. In this process, the anti-loosening boss 13 and the stabilizing assembly 25 jointly constrain the axial displacement of the cylinder body 241, and the spring 253 continuously provides a buffer pressure. The support plate 231 is automatically attached to the furnace wall to form auxiliary support by the pre-tightening force of the elastic telescopic member 232 when the furnace body 2 is tilted, so as to ensure the stability of the tilting process.

[0023] The above embodiment is only one of the preferred specific embodiments of the present application, and the usual changes and replacements made by those skilled in the art within the technical scheme of the present application are all included in the protection scope of the present application.

Claims

1. A medium-frequency furnace device for casting, comprising a furnace body mounted on a support platform and a furnace cover covering the furnace body, wherein a feed inlet and a discharge outlet are respectively provided on both sides of the top of the furnace body along the circumferential direction, and a pair of electrodes for dissolving materials inside the furnace body are provided on the furnace cover, which can be inserted into the furnace body. The device is characterized in that: The support platform is used to place the furnace body and abut against the bottom of the furnace body. The end faces of the support platform and the furnace body are both arc-shaped. The bottom of the furnace body is symmetrically arranged along the circumference with material buckets for holding finished materials and telescopic cylinders for tilting the furnace body, corresponding to the feed inlet and discharge outlet respectively. The telescopic cylinder includes a cylinder body embedded in the support platform and a telescopic rod extending from the cylinder body and hinged to the furnace body. The support platform is also provided with a stabilizing component to prevent the cylinder body from falling out of the support platform.

2. The casting medium-frequency furnace apparatus according to claim 1, characterized in that: There is an outer diameter difference between the cylinder and the telescopic rod. The support platform includes anti-detachment protrusions distributed axially from the outer edge of the cylinder towards the center of the cylinder. The stabilizing component is disposed between the anti-detachment protrusions and the cylinder.

3. The casting medium-frequency furnace apparatus according to claim 2, characterized in that: The stabilizing component includes an adjusting rod screwed onto the anti-detachment boss, a fixing nut that cooperates with the adjusting rod, and a spring with one end abutting against the cylinder body. The front end of the adjusting rod is provided with a positioning part for positioning the other end of the spring, and at least part of the spring is located outside the positioning part.

4. The casting medium-frequency furnace apparatus according to claim 1, characterized in that: A support plate is provided on the side of the material hopper near the furnace body, and the support plate abuts against the furnace body when the furnace body tilts.

5. The casting intermediate frequency furnace apparatus according to claim 4, characterized in that: One end of the support plate is hinged to the material bucket, and an elastic telescopic component is provided between the support plate and the material bucket to provide a torque to the support plate in the direction of the furnace body.

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